/* roulang page: index */
:root {
            --primary: #1a5cb5;
            --primary-dark: #0d3d7a;
            --primary-light: #e8f1fb;
            --secondary: #1e6fd9;
            --accent: #f0a030;
            --accent-light: #fef7ed;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b919e;
            --border: #e2e7ef;
            --border-light: #eef1f6;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo i {
            color: var(--accent);
            margin-right: 6px;
            font-size: 1.3rem;
        }

        .nav-tabs-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }
        .nav-tabs-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary-light);
        }
        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 92, 181, 0.3);
        }
        .nav-chip i {
            margin-right: 5px;
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.4px;
            box-shadow: 0 3px 12px rgba(240, 160, 48, 0.35);
        }
        .nav-cta-btn:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 160, 48, 0.45);
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            transform: translateY(0);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .mobile-menu-toggle:hover {
            background: var(--bg);
        }

        /* ==================== Hero Section ==================== */
        .hero-section {
            background: linear-gradient(170deg, #f0f5fc 0%, #f8fafd 30%, #ffffff 100%);
            padding: 56px 0 52px;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-light);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(26, 92, 181, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(240, 160, 48, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-status-bar {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 28px;
            padding: 8px 18px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 22px;
            box-shadow: var(--shadow-sm);
            font-weight: 500;
        }
        .hero-status-bar .status-dot {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: #22c55e;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
            }
        }
        .hero-status-bar .status-count {
            font-weight: 700;
            color: var(--primary);
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
            line-height: 1.3;
        }
        .hero-title .highlight {
            color: var(--primary);
            position: relative;
        }
        .hero-title .highlight-accent {
            color: var(--accent);
        }

        .hero-desc {
            font-size: 1.08rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto 28px;
            line-height: 1.75;
        }

        .hero-cta-row {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .btn-hero-primary {
            padding: 13px 32px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            transition: all var(--transition);
            box-shadow: 0 4px 18px rgba(26, 92, 181, 0.35);
            letter-spacing: 0.4px;
        }
        .btn-hero-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 8px 28px rgba(26, 92, 181, 0.5);
            transform: translateY(-2px);
        }
        .btn-hero-outline {
            padding: 13px 32px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: #fff;
            color: var(--primary);
            border: 2px solid var(--primary);
            transition: all var(--transition);
            letter-spacing: 0.4px;
        }
        .btn-hero-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
        }

        .hero-icon-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-top: 8px;
        }
        .hero-icon-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            background: #fff;
            border-radius: var(--radius);
            padding: 16px 20px;
            min-width: 90px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            cursor: default;
        }
        .hero-icon-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
            border-color: #d0d8e5;
        }
        .hero-icon-item .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            flex-shrink: 0;
        }
        .icon-blue {
            background: var(--primary);
        }
        .icon-teal {
            background: #0ea5a0;
        }
        .icon-purple {
            background: #7c3aed;
        }
        .icon-orange {
            background: #f59e0b;
        }
        .icon-green {
            background: #10b981;
        }
        .icon-rose {
            background: #e11d48;
        }
        .hero-icon-item span {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text);
            white-space: nowrap;
        }

        .hero-data-strip {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .hero-data-item {
            text-align: center;
        }
        .hero-data-item .data-num {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-heading);
        }
        .hero-data-item .data-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 2px;
        }

        /* ==================== Section Common ==================== */
        .section-block {
            padding: 56px 0;
        }
        .section-block.bg-white-block {
            background: var(--bg-white);
        }
        .section-block.bg-light-block {
            background: var(--bg);
        }
        .section-block.bg-primary-light-block {
            background: var(--primary-light);
        }
        .section-block.bg-dark-accent {
            background: #0f1f3a;
            color: #fff;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.6;
            max-width: 600px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 36px;
        }
        .section-header .section-title {
            margin-bottom: 10px;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 14px;
            border-radius: 16px;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        /* ==================== Cards ==================== */
        .card-custom {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            overflow: hidden;
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: #d0d8e5;
        }
        .card-custom .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: #eef2f7;
        }
        .card-custom .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card-custom:hover .card-img-wrap img {
            transform: scale(1.04);
        }
        .card-custom .card-body-custom {
            padding: 18px 20px 20px;
        }
        .card-custom .card-title-custom {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .card-custom .card-text-custom {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .card-custom .card-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 12px;
            margin-bottom: 8px;
        }
        .tag-hot {
            background: #fef2f2;
            color: #dc2626;
        }
        .tag-new {
            background: #ecfdf5;
            color: #059669;
        }
        .tag-pop {
            background: #fef7ed;
            color: #d97706;
        }

        /* ==================== Buttons ==================== */
        .btn-custom {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            border: none;
            cursor: pointer;
        }
        .btn-custom-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 3px 14px rgba(26, 92, 181, 0.3);
        }
        .btn-custom-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 22px rgba(26, 92, 181, 0.45);
            transform: translateY(-2px);
        }
        .btn-custom-outline {
            background: #fff;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-custom-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-dark);
        }
        .btn-custom-accent {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 3px 14px rgba(240, 160, 48, 0.35);
        }
        .btn-custom-accent:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 22px rgba(240, 160, 48, 0.5);
            transform: translateY(-2px);
        }
        .btn-custom-sm {
            padding: 7px 16px;
            font-size: 0.82rem;
            border-radius: 20px;
        }
        .btn-custom-lg {
            padding: 14px 36px;
            font-size: 1.05rem;
            border-radius: 28px;
        }

        /* ==================== News List ==================== */
        .news-list-item {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
            transition: background var(--transition);
        }
        .news-list-item:last-child {
            border-bottom: none;
        }
        .news-list-item:hover {
            background: #fafbfd;
            border-radius: 8px;
            padding-left: 12px;
            padding-right: 12px;
            margin-left: -12px;
            margin-right: -12px;
        }
        .news-date {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--text-muted);
            min-width: 85px;
            text-align: right;
            padding-top: 2px;
            font-weight: 500;
        }
        .news-content-wrap {
            flex: 1;
        }
        .news-title-link {
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            display: block;
            margin-bottom: 4px;
            line-height: 1.4;
            transition: color var(--transition);
        }
        .news-title-link:hover {
            color: var(--primary);
        }
        .news-summary {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 6px;
        }
        .news-readmore {
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition);
        }
        .news-readmore:hover {
            gap: 8px;
            color: var(--primary-dark);
        }

        /* ==================== FAQ ==================== */
        .faq-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            margin-bottom: 12px;
            background: #fff;
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            padding: 16px 20px;
            font-weight: 600;
            font-size: 0.98rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text);
            user-select: none;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: #fafbfd;
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--text-muted);
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 20px 16px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }

        /* ==================== Share Collect ==================== */
        .share-collect-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
        }
        .share-collect-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            cursor: pointer;
        }
        .share-collect-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: #d0d8e5;
        }
        .share-collect-card .sc-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.5rem;
            color: #fff;
        }
        .share-collect-card h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--text);
        }
        .share-collect-card p {
            font-size: 0.84rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.5;
        }

        /* ==================== Guest Carousel ==================== */
        .guest-scroll-wrap {
            overflow-x: auto;
            scrollbar-width: thin;
            scrollbar-color: #d0d8e5 transparent;
            padding-bottom: 8px;
            -webkit-overflow-scrolling: touch;
        }
        .guest-scroll-wrap::-webkit-scrollbar {
            height: 6px;
        }
        .guest-scroll-wrap::-webkit-scrollbar-track {
            background: transparent;
        }
        .guest-scroll-wrap::-webkit-scrollbar-thumb {
            background: #d0d8e5;
            border-radius: 3px;
        }
        .guest-scroll-inner {
            display: flex;
            gap: 18px;
            min-width: max-content;
        }
        .guest-card {
            flex: 0 0 260px;
            background: #fff;
            border-radius: var(--radius);
            padding: 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all var(--transition);
        }
        .guest-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
        }
        .guest-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 12px;
            font-size: 1.6rem;
            color: var(--primary);
            font-weight: 700;
        }
        .guest-card h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text);
        }
        .guest-card .guest-role {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 8px;
        }
        .guest-card p {
            font-size: 0.84rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin: 0;
        }

        /* ==================== Topic Tags ==================== */
        .topic-tags-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .topic-tag {
            display: inline-block;
            padding: 9px 18px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            background: #fff;
            color: var(--text);
            border: 1.5px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
        }
        .topic-tag:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .topic-tag.hot-tag {
            background: #fef2f2;
            border-color: #fecaca;
            color: #dc2626;
            font-weight: 600;
        }

        /* ==================== Guide List ==================== */
        .guide-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .guide-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.95rem;
            color: var(--text);
            line-height: 1.6;
        }
        .guide-list li:last-child {
            border-bottom: none;
        }
        .guide-num {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #0f1a2e;
            color: #c5cdd8;
            padding: 44px 0 28px;
            font-size: 0.88rem;
            line-height: 1.8;
        }
        .site-footer a {
            color: #c5cdd8;
            transition: color var(--transition);
        }
        .site-footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 28px;
            margin-bottom: 28px;
        }
        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 18px;
            text-align: center;
            font-size: 0.82rem;
            color: #8b929e;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            align-items: center;
        }
        .footer-bottom a {
            color: #8b929e;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.1rem;
            }
            .hero-icon-grid {
                gap: 10px;
            }
            .hero-icon-item {
                min-width: 70px;
                padding: 12px 14px;
            }
            .hero-icon-item .icon-circle {
                width: 38px;
                height: 38px;
                font-size: 1.1rem;
            }
            .hero-icon-item span {
                font-size: 0.75rem;
            }
            .nav-tabs-chips {
                gap: 3px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .hero-data-strip {
                gap: 24px;
            }
            .section-block {
                padding: 40px 0;
            }
        }

        @media (max-width: 768px) {
            .nav-logo {
                font-size: 1.15rem;
            }
            .nav-tabs-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px 16px;
                gap: 4px;
                border-bottom: 2px solid var(--border);
                box-shadow: var(--shadow-lg);
                z-index: 1040;
            }
            .nav-tabs-chips.mobile-open {
                display: flex;
            }
            .nav-chip {
                width: 100%;
                text-align: center;
                border-radius: 10px;
                padding: 10px 16px;
                font-size: 0.9rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .hero-icon-grid {
                gap: 8px;
            }
            .hero-icon-item {
                min-width: 60px;
                padding: 10px 10px;
                border-radius: 10px;
            }
            .hero-icon-item .icon-circle {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
            }
            .hero-icon-item span {
                font-size: 0.7rem;
            }
            .hero-data-strip {
                gap: 16px;
            }
            .hero-data-item .data-num {
                font-size: 1.3rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .share-collect-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .guest-card {
                flex: 0 0 210px;
            }
            .news-list-item {
                flex-direction: column;
                gap: 4px;
            }
            .news-date {
                text-align: left;
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .container-custom {
                padding: 0 16px;
            }
            .section-block {
                padding: 32px 0;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.4rem;
            }
            .hero-desc {
                font-size: 0.82rem;
            }
            .hero-icon-grid {
                gap: 6px;
            }
            .hero-icon-item {
                min-width: 52px;
                padding: 8px 6px;
                border-radius: 8px;
            }
            .hero-icon-item .icon-circle {
                width: 28px;
                height: 28px;
                font-size: 0.8rem;
            }
            .hero-icon-item span {
                font-size: 0.65rem;
            }
            .hero-cta-row {
                flex-direction: column;
                align-items: center;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .share-collect-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
            }
            .guest-card {
                flex: 0 0 180px;
            }
            .topic-tag {
                padding: 7px 13px;
                font-size: 0.78rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1a5cb5;
            --primary-dark: #0d3d7a;
            --primary-light: #e8f1fb;
            --secondary: #1e6fd9;
            --accent: #f0a030;
            --accent-light: #fef7ed;
            --accent-dark: #d4881e;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --bg-soft: #f0f4f9;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b919e;
            --border: #e2e7ef;
            --border-light: #eef1f6;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.13);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
            --green: #10b981;
            --green-light: #ecfdf5;
            --red: #ef4444;
            --red-light: #fef2f2;
            --purple: #7c3aed;
            --purple-light: #f5f3ff;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 16px;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 1.3rem;
        }
        .nav-tabs-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
            flex: 1;
            min-width: 0;
        }
        .nav-tabs-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary-light);
        }
        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 92, 181, 0.3);
        }
        .nav-chip i {
            margin-right: 5px;
            font-size: 0.85rem;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.4px;
            box-shadow: 0 3px 12px rgba(240, 160, 48, 0.35);
            text-decoration: none;
        }
        .nav-cta-btn:hover {
            background: var(--accent-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 160, 48, 0.45);
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            transform: translateY(0);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }

        /* ==================== Section Spacing ==================== */
        .section-py {
            padding: 60px 0;
        }
        .section-py-lg {
            padding: 80px 0;
        }
        .section-py-sm {
            padding: 40px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 2rem;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.6;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            margin-bottom: 12px;
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ==================== Hero - 白皮书获客 ==================== */
        .hero-whitepaper {
            background: linear-gradient(160deg, #f0f5fc 0%, #e8f0f8 30%, #f6f8fb 70%, #ffffff 100%);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .hero-whitepaper::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(26, 92, 181, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-whitepaper .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1.1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-cover-wrap {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-cover-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            max-width: 380px;
            width: 100%;
            transition: transform var(--transition-slow), box-shadow var(--transition-slow);
        }
        .hero-cover-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.16);
        }
        .hero-cover-card img {
            width: 100%;
            aspect-ratio: 3/4;
            object-fit: cover;
            display: block;
        }
        .hero-cover-badge {
            position: absolute;
            top: -10px;
            right: 10px;
            background: var(--accent);
            color: #fff;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 14px rgba(240, 160, 48, 0.4);
            z-index: 2;
        }
        .hero-info h1 {
            font-size: 2.5rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            line-height: 1.25;
        }
        .hero-info .hero-desc {
            font-size: 1.08rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .hero-toc {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
            border-left: 4px solid var(--primary);
        }
        .hero-toc h4 {
            font-size: 0.95rem;
            margin-bottom: 10px;
            color: var(--primary-dark);
            font-weight: 700;
        }
        .hero-toc ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .hero-toc ul li {
            padding: 6px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            border-bottom: 1px dashed var(--border-light);
        }
        .hero-toc ul li:last-child {
            border-bottom: none;
        }
        .hero-toc ul li i {
            color: var(--accent);
            font-size: 0.75rem;
        }
        .hero-form-inline {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }
        .hero-form-inline input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border: 2px solid var(--border);
            border-radius: 28px;
            font-size: 0.95rem;
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
            background: var(--bg-white);
        }
        .hero-form-inline input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 92, 181, 0.08);
        }
        .hero-form-inline .btn-download-guide {
            padding: 12px 28px;
            border-radius: 28px;
            font-size: 0.95rem;
            font-weight: 700;
            background: var(--primary);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.4px;
            box-shadow: 0 4px 16px rgba(26, 92, 181, 0.3);
        }
        .hero-form-inline .btn-download-guide:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(26, 92, 181, 0.4);
            transform: translateY(-1px);
        }

        /* ==================== 指标看板 ==================== */
        .metrics-strip {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            padding: 32px 0;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-item {
            padding: 20px 16px;
            border-radius: var(--radius);
            background: var(--bg-soft);
            transition: all var(--transition);
        }
        .metric-item:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .metric-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
            font-family: var(--font-heading);
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }
        .metric-icon {
            font-size: 1.4rem;
            color: var(--accent);
            margin-bottom: 8px;
        }

        /* ==================== 入门步骤 ==================== */
        .steps-section {
            background: var(--bg-white);
        }
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .step-card {
            text-align: center;
            padding: 32px 20px;
            border-radius: var(--radius-lg);
            background: var(--bg-soft);
            position: relative;
            transition: all var(--transition);
            border: 2px solid transparent;
        }
        .step-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            background: #fff;
        }
        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 1.3rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(26, 92, 181, 0.3);
        }
        .step-card h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
        }

        /* ==================== 服务矩阵 - 游戏分类入门 ==================== */
        .game-matrix {
            background: var(--bg);
        }
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .matrix-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .matrix-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }
        .matrix-card img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .matrix-card-body {
            padding: 20px 22px 24px;
        }
        .matrix-card-body h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .matrix-card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 14px;
            line-height: 1.6;
        }
        .matrix-card-body .badge-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
        }

        /* ==================== 结果对比 ==================== */
        .compare-section {
            background: var(--bg-white);
        }
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            background: #fff;
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }
        .compare-table thead th {
            background: var(--primary-dark);
            color: #fff;
            padding: 16px 20px;
            font-size: 0.95rem;
            font-weight: 700;
            text-align: center;
            letter-spacing: 0.4px;
        }
        .compare-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }
        .compare-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }
        .compare-table tbody td {
            padding: 14px 20px;
            font-size: 0.9rem;
            border-bottom: 1px solid var(--border-light);
            text-align: center;
            color: var(--text-secondary);
        }
        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
        }
        .compare-table tbody tr:last-child td {
            border-bottom: none;
        }
        .compare-table tbody tr:hover {
            background: var(--bg-soft);
        }
        .compare-table .check-green {
            color: var(--green);
            font-weight: 700;
        }
        .compare-table .cross-red {
            color: var(--red);
        }

        /* ==================== 教程特色 ==================== */
        .features-section {
            background: var(--bg);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            text-align: center;
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .feature-icon-circle {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
        }
        .feature-icon-circle.blue {
            background: var(--primary-light);
            color: var(--primary);
        }
        .feature-icon-circle.amber {
            background: var(--accent-light);
            color: var(--accent);
        }
        .feature-icon-circle.green {
            background: var(--green-light);
            color: var(--green);
        }
        .feature-card h4 {
            font-size: 1.05rem;
            margin-bottom: 8px;
        }
        .feature-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ==================== 用户评价 ==================== */
        .testimonials-section {
            background: var(--bg-white);
        }
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--bg-soft);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: relative;
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .testimonial-card:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-card);
        }
        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--primary-light);
            margin-bottom: 8px;
        }
        .testimonial-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .testimonial-author .author-info {
            font-size: 0.85rem;
        }
        .testimonial-author .author-info strong {
            display: block;
            color: var(--text);
        }
        .testimonial-author .author-info span {
            color: var(--text-muted);
            font-size: 0.78rem;
        }

        /* ==================== FAQ ==================== */
        .faq-section {
            background: var(--bg);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            padding: 18px 22px;
            text-align: left;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: color var(--transition);
            font-family: var(--font-body);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
        }
        .faq-answer {
            padding: 0 22px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item.open {
            border-color: var(--primary-light);
        }

        /* ==================== CTA 转化 ==================== */
        .cta-section {
            background: linear-gradient(135deg, #0d3d7a 0%, #1a5cb5 50%, #1e6fd9 100%);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -40px;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-inner h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .cta-inner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            margin-bottom: 28px;
            line-height: 1.6;
        }
        .cta-form-wrap {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form-wrap input {
            flex: 1;
            min-width: 220px;
            max-width: 360px;
            padding: 13px 20px;
            border-radius: 28px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: all var(--transition);
        }
        .cta-form-wrap input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .cta-form-wrap input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.08);
        }
        .cta-form-wrap .btn-cta-submit {
            padding: 13px 30px;
            border-radius: 28px;
            font-size: 0.95rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.4px;
            box-shadow: 0 4px 18px rgba(240, 160, 48, 0.45);
        }
        .cta-form-wrap .btn-cta-submit:hover {
            background: #e09220;
            box-shadow: 0 8px 26px rgba(240, 160, 48, 0.55);
            transform: translateY(-2px);
        }

        /* ==================== 品牌介绍 ==================== */
        .brand-intro-section {
            background: var(--bg-white);
        }
        .brand-intro-card {
            max-width: 800px;
            margin: 0 auto;
            background: var(--bg-soft);
            border-radius: var(--radius-lg);
            padding: 36px;
            text-align: center;
            border: 1px solid var(--border-light);
        }
        .brand-intro-card h3 {
            font-size: 1.4rem;
            margin-bottom: 14px;
        }
        .brand-intro-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #1a1a2e;
            color: #c5c9d2;
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 14px;
            font-weight: 700;
            letter-spacing: 0.3px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: #a8adb8;
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: #8b8f9a;
        }
        .site-footer .footer-bottom a {
            color: #a8adb8;
            transition: color var(--transition);
        }
        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .hero-whitepaper .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-cover-wrap {
                order: -1;
            }
            .hero-cover-card {
                max-width: 280px;
            }
            .hero-info h1 {
                font-size: 2rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-tabs-chips {
                gap: 3px;
            }
            .nav-chip {
                padding: 6px 11px;
                font-size: 0.8rem;
            }
            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: auto;
                min-height: 60px;
                padding: 8px 0;
            }
            .site-header .container-custom {
                flex-wrap: wrap;
            }
            .nav-tabs-chips {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding: 8px 0 4px;
                gap: 4px;
            }
            .nav-chip {
                padding: 5px 10px;
                font-size: 0.78rem;
                border-radius: 18px;
            }
            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-whitepaper {
                padding: 40px 0 36px;
            }
            .hero-info h1 {
                font-size: 1.7rem;
            }
            .hero-cover-card {
                max-width: 220px;
            }
            .hero-form-inline {
                flex-direction: column;
            }
            .hero-form-inline input {
                min-width: auto;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .metric-number {
                font-size: 1.6rem;
            }
            .steps-flow {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .compare-table-wrap {
                font-size: 0.8rem;
            }
            .compare-table thead th,
            .compare-table tbody td {
                padding: 10px 12px;
                font-size: 0.8rem;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .section-py {
                padding: 40px 0;
            }
            .section-py-lg {
                padding: 50px 0;
            }
            .cta-inner h2 {
                font-size: 1.5rem;
            }
            .cta-form-wrap {
                flex-direction: column;
                align-items: center;
            }
            .cta-form-wrap input {
                max-width: 100%;
                width: 100%;
            }
            .brand-intro-card {
                padding: 24px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
        }

        @media (max-width: 520px) {
            .nav-logo {
                font-size: 1.1rem;
            }
            .nav-chip {
                padding: 4px 8px;
                font-size: 0.72rem;
                border-radius: 16px;
            }
            .nav-chip i {
                font-size: 0.7rem;
                margin-right: 3px;
            }
            .nav-cta-btn {
                padding: 6px 10px;
                font-size: 0.72rem;
                border-radius: 18px;
            }
            .hero-info h1 {
                font-size: 1.4rem;
            }
            .hero-cover-card {
                max-width: 180px;
            }
            .hero-toc {
                padding: 14px 16px;
            }
            .hero-toc ul li {
                font-size: 0.8rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-number {
                font-size: 1.4rem;
            }
            .metric-label {
                font-size: 0.78rem;
            }
            .steps-flow {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .container-custom {
                padding: 0 14px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a5cb5;
            --primary-dark: #0d3d7a;
            --primary-light: #e8f1fb;
            --secondary: #1e6fd9;
            --accent: #f0a030;
            --accent-light: #fef7ed;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b919e;
            --border: #e2e7ef;
            --border-light: #eef1f6;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
        }

        .nav-logo:hover {
            color: var(--primary);
        }

        .nav-logo i {
            color: var(--accent);
            margin-right: 6px;
            font-size: 1.3rem;
        }

        .nav-tabs-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }

        .nav-tabs-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.3px;
        }

        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary-light);
        }

        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 92, 181, 0.3);
        }

        .nav-chip i {
            margin-right: 5px;
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.4px;
            box-shadow: 0 3px 12px rgba(240, 160, 48, 0.35);
        }

        .nav-cta-btn:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 160, 48, 0.45);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: var(--primary-light);
        }

        /* ==================== Hero Section ==================== */
        .hero-security {
            position: relative;
            background: linear-gradient(160deg, #0d2b55 0%, #132d4a 30%, #1a3a5c 60%, #0f2840 100%);
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 60px 0;
        }

        .hero-security::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(26, 92, 181, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-security::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(240, 160, 48, 0.12) 0%, transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-security .container-custom {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }

        .hero-security-left {
            color: #fff;
        }

        .hero-security-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 8px 16px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            font-size: 0.85rem;
            font-weight: 500;
            color: #c8ddf8;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-security-badge i {
            color: var(--accent);
            font-size: 0.8rem;
        }

        .hero-security-left h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.8px;
        }

        .hero-security-left h1 span {
            color: var(--accent);
            position: relative;
        }

        .hero-security-left .hero-subtitle {
            font-size: 1.1rem;
            color: #b8cde0;
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }

        .hero-security-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 26px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.4px;
            box-shadow: 0 4px 18px rgba(240, 160, 48, 0.4);
            text-decoration: none;
        }

        .btn-hero-primary:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 8px 28px rgba(240, 160, 48, 0.5);
            transform: translateY(-2px);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 26px;
            font-size: 0.95rem;
            font-weight: 500;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.4);
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
        }

        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.7);
            color: #fff;
        }

        .hero-security-right {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faux-data-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 20px 22px;
            display: flex;
            align-items: center;
            gap: 16px;
            backdrop-filter: blur(6px);
            transition: all var(--transition-slow);
            position: relative;
        }

        .faux-data-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateX(4px);
        }

        .faux-data-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .faux-data-icon.shield-icon {
            background: rgba(26, 92, 181, 0.4);
            color: #7db8f0;
        }

        .faux-data-icon.lock-icon {
            background: rgba(240, 160, 48, 0.35);
            color: #f5c46a;
        }

        .faux-data-icon.check-icon {
            background: rgba(34, 180, 120, 0.35);
            color: #5cd8a0;
        }

        .faux-data-info .faux-data-value {
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .faux-data-info .faux-data-label {
            font-size: 0.82rem;
            color: #a0bcd0;
            margin-top: 2px;
            letter-spacing: 0.3px;
        }

        .faux-data-rank {
            position: absolute;
            right: 18px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(240, 160, 48, 0.15);
            padding: 4px 10px;
            border-radius: 12px;
            letter-spacing: 0.5px;
        }

        /* ==================== Section Titles ==================== */
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 16px;
            font-size: 0.82rem;
            font-weight: 600;
            background: var(--primary-light);
            color: var(--primary);
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .section-header .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ==================== Metrics Dashboard ==================== */
        .metrics-section {
            padding: 70px 0;
            background: var(--bg-white);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition-slow);
        }

        .metric-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-card .metric-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
            background: var(--primary-light);
            color: var(--primary);
        }

        .metric-card .metric-value {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
            letter-spacing: 0.5px;
        }

        .metric-card .metric-value .metric-unit {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-muted);
            margin-left: 2px;
        }

        .metric-card .metric-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 6px;
            letter-spacing: 0.3px;
        }

        .metric-card .metric-trend {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #22b478;
            margin-top: 8px;
        }

        /* ==================== Service Matrix ==================== */
        .service-matrix-section {
            padding: 70px 0;
            background: var(--bg);
        }

        .service-matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-matrix-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .service-matrix-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: var(--primary-light);
        }

        .service-matrix-card .matrix-icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 18px;
            background: var(--primary-light);
            color: var(--primary);
            transition: all var(--transition);
        }

        .service-matrix-card:hover .matrix-icon-wrap {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 20px rgba(26, 92, 181, 0.3);
        }

        .service-matrix-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: 0.4px;
        }

        .service-matrix-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }

        .service-matrix-card .matrix-features {
            list-style: none;
            padding: 0;
            margin: 14px 0 0;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .matrix-features li {
            font-size: 0.78rem;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 12px;
            border-radius: 14px;
            font-weight: 500;
            letter-spacing: 0.3px;
        }

        /* ==================== Tech Security Section ==================== */
        .tech-security-section {
            padding: 70px 0;
            background: var(--bg-white);
        }

        .tech-security-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .tech-security-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .tech-security-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
            border-radius: var(--radius-xl);
        }

        .tech-security-image .tech-badge-overlay {
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(13, 61, 122, 0.9);
            color: #fff;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            backdrop-filter: blur(4px);
        }

        .tech-security-content h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .tech-security-content .tech-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 20px;
        }

        .tech-check-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .tech-check-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text);
            line-height: 1.5;
        }

        .tech-check-list li i {
            color: #22b478;
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ==================== Comparison Section ==================== */
        .comparison-section {
            padding: 70px 0;
            background: var(--bg);
        }

        .comparison-table-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
        }

        .comparison-table thead th {
            background: var(--primary-dark);
            color: #fff;
            padding: 16px 20px;
            font-size: 0.9rem;
            font-weight: 600;
            letter-spacing: 0.4px;
            text-align: center;
            border: none;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            border-radius: 0;
        }

        .comparison-table tbody td {
            padding: 14px 20px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            text-align: center;
            border-bottom: 1px solid var(--border-light);
            vertical-align: middle;
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
        }

        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }

        .comparison-table tbody tr:hover {
            background: var(--primary-light);
        }

        .comparison-check {
            color: #22b478;
            font-size: 1.1rem;
        }

        .comparison-highlight {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 12px;
            background: #e6f7ee;
            color: #22b478;
            font-weight: 600;
            font-size: 0.8rem;
            letter-spacing: 0.3px;
        }

        /* ==================== FAQ Section ==================== */
        .faq-section {
            padding: 70px 0;
            background: var(--bg-white);
        }

        .faq-accordion-wrap {
            max-width: 780px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg);
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            letter-spacing: 0.3px;
            transition: background var(--transition);
            font-family: var(--font-body);
        }

        .faq-question:hover {
            background: var(--primary-light);
        }

        .faq-question i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ==================== CTA Form Section ==================== */
        .cta-form-section {
            padding: 70px 0;
            background: linear-gradient(160deg, #0d2b55 0%, #132d4a 40%, #1a3a5c 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-form-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26, 92, 181, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-form-section .container-custom {
            position: relative;
            z-index: 2;
        }

        .cta-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cta-form-left {
            color: #fff;
        }

        .cta-form-left h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            color: #fff;
        }

        .cta-form-left p {
            font-size: 0.95rem;
            color: #b8cde0;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .cta-form-left .cta-contact-info {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .cta-contact-info .cta-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: #c8ddf8;
        }

        .cta-contact-item i {
            color: var(--accent);
            width: 20px;
            text-align: center;
        }

        .cta-form-right {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-xl);
            padding: 32px 28px;
            backdrop-filter: blur(6px);
        }

        .cta-form-right h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            letter-spacing: 0.4px;
        }

        .cta-form-right .form-subtitle {
            font-size: 0.85rem;
            color: #a0bcd0;
            margin-bottom: 20px;
        }

        .cta-form-right .form-control {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 0.9rem;
            transition: all var(--transition);
            font-family: var(--font-body);
        }

        .cta-form-right .form-control::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-form-right .form-control:focus {
            background: rgba(255, 255, 255, 0.16);
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(240, 160, 48, 0.2);
            color: #fff;
            outline: none;
        }

        .cta-form-right textarea.form-control {
            resize: vertical;
            min-height: 90px;
        }

        .btn-cta-submit {
            width: 100%;
            padding: 13px;
            border-radius: 26px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.4px;
            box-shadow: 0 4px 18px rgba(240, 160, 48, 0.4);
            cursor: pointer;
            font-family: var(--font-body);
            margin-top: 8px;
        }

        .btn-cta-submit:hover {
            background: #e09220;
            box-shadow: 0 8px 28px rgba(240, 160, 48, 0.5);
            transform: translateY(-1px);
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #0f1a2e;
            color: #c5ced8;
            padding: 48px 0 24px;
            font-size: 0.9rem;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .site-footer .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }

        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }

        .site-footer .footer-col ul li a {
            color: #a0b0c0;
            font-size: 0.85rem;
            transition: color var(--transition);
            text-decoration: none;
        }

        .site-footer .footer-col ul li a:hover {
            color: #ffffff;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 16px;
            align-items: center;
            font-size: 0.8rem;
            color: #8a95a5;
        }

        .site-footer .footer-bottom a {
            color: #a0b0c0;
            text-decoration: none;
            transition: color var(--transition);
        }

        .site-footer .footer-bottom a:hover {
            color: #ffffff;
        }

        .site-footer .footer-bottom span {
            white-space: nowrap;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .hero-security .container-custom {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .hero-security-right {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 10px;
            }

            .faux-data-card {
                flex: 1 1 140px;
                min-width: 130px;
                padding: 16px;
            }

            .faux-data-rank {
                position: static;
                transform: none;
                margin-left: auto;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .service-matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .tech-security-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .cta-form-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .hero-security {
                min-height: auto;
                padding: 40px 0;
            }

            .hero-security-left h1 {
                font-size: 2rem;
            }

            .hero-security-right {
                flex-direction: column;
                gap: 10px;
            }

            .faux-data-card {
                flex: 1 1 auto;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .metric-card {
                padding: 20px 14px;
            }

            .metric-card .metric-value {
                font-size: 1.6rem;
            }

            .service-matrix-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 12px;
                font-size: 0.78rem;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
                gap: 4px;
            }

            .nav-chip {
                padding: 6px 12px;
                font-size: 0.78rem;
            }

            .nav-logo {
                font-size: 1.15rem;
            }

            .site-header {
                height: auto;
                min-height: 56px;
                padding: 8px 0;
            }

            .site-header .container-custom {
                flex-wrap: wrap;
                gap: 8px;
            }

            .nav-tabs-chips {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                gap: 4px;
                padding: 6px 0;
            }

            .cta-form-right {
                padding: 22px 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-security-left h1 {
                font-size: 1.6rem;
            }

            .hero-security-left .hero-subtitle {
                font-size: 0.9rem;
            }

            .hero-security-btns {
                flex-direction: column;
                gap: 10px;
            }

            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
                text-align: center;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .comparison-table-wrap {
                overflow-x: auto;
            }

            .comparison-table {
                min-width: 500px;
            }

            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .site-footer .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }

            .section-header h2 {
                font-size: 1.35rem;
            }

            .cta-form-grid {
                gap: 24px;
            }

            .nav-chip {
                padding: 5px 10px;
                font-size: 0.72rem;
                border-radius: 16px;
            }

            .nav-logo {
                font-size: 1.05rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1a5cb5;
            --primary-dark: #0d3d7a;
            --primary-light: #e8f1fb;
            --secondary: #1e6fd9;
            --accent: #f0a030;
            --accent-light: #fef7ed;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b919e;
            --border: #e2e7ef;
            --border-light: #eef1f6;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
            --success: #10b981;
            --danger: #ef4444;
            --warning: #f59e0b;
            --info: #3b82f6;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
        }

        .nav-logo:hover {
            color: var(--primary);
        }

        .nav-logo i {
            color: var(--accent);
            margin-right: 6px;
            font-size: 1.3rem;
        }

        .nav-tabs-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }

        .nav-tabs-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.3px;
        }

        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary-light);
        }

        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 92, 181, 0.3);
        }

        .nav-chip i {
            margin-right: 5px;
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.4px;
            box-shadow: 0 3px 12px rgba(240, 160, 48, 0.35);
        }

        .nav-cta-btn:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 160, 48, 0.45);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: var(--border-light);
        }

        /* ==================== Hero Section ==================== */
        .hero-section {
            position: relative;
            background: linear-gradient(160deg, #0d3d7a 0%, #1a5cb5 35%, #1e6fd9 65%, #0d3d7a 100%);
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }

        .hero-pattern {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(240, 160, 48, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(255, 255, 255, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 60% 80%, rgba(26, 92, 181, 0.2) 0%, transparent 50%);
            z-index: 1;
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }

        .hero-text {
            color: #fff;
        }

        .hero-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            animation: pulse-badge 2s ease-in-out infinite;
        }

        @keyframes pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(240, 160, 48, 0.5);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(240, 160, 48, 0);
            }
        }

        .hero-text h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            color: #fff;
        }

        .hero-text h1 span {
            color: var(--accent);
            position: relative;
            display: inline-block;
        }

        .hero-text .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .hero-countdown-wrap {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }

        .countdown-item {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius);
            padding: 14px 18px;
            text-align: center;
            min-width: 72px;
            transition: all var(--transition);
        }

        .countdown-item .count-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1;
            display: block;
            font-family: var(--font-heading);
        }

        .countdown-item .count-label {
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 4px;
            display: block;
        }

        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.5px;
            box-shadow: 0 6px 24px rgba(240, 160, 48, 0.4);
            text-decoration: none;
        }

        .btn-hero-primary:hover {
            background: #e8991e;
            color: #fff;
            box-shadow: 0 10px 32px rgba(240, 160, 48, 0.55);
            transform: translateY(-2px);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition);
            letter-spacing: 0.5px;
            text-decoration: none;
        }

        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual-card {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-lg);
            padding: 28px;
            width: 100%;
            max-width: 420px;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
        }

        .hero-visual-card img {
            border-radius: var(--radius);
            width: 100%;
            height: auto;
            aspect-ratio: 16/10;
            object-fit: cover;
            margin-bottom: 16px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .hero-visual-card .live-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #ef4444;
            color: #fff;
            padding: 5px 12px;
            border-radius: 14px;
            font-size: 0.8rem;
            font-weight: 700;
            animation: live-blink 1.5s ease-in-out infinite;
        }

        @keyframes live-blink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }

        .hero-visual-card .match-info {
            color: #fff;
            font-size: 0.9rem;
            margin-top: 8px;
            opacity: 0.85;
        }

        /* ==================== Section Common ==================== */
        .section-block {
            padding: 64px 0;
        }

        .section-block.section-alt {
            background: var(--bg-white);
        }

        .section-block.section-dark {
            background: #0f1a2e;
            color: #fff;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
            background: var(--primary-light);
            padding: 4px 14px;
            border-radius: 20px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
            line-height: 1.3;
        }

        .section-dark .section-title {
            color: #fff;
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .section-dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ==================== Metrics Dashboard ==================== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }

        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }

        .metric-card .metric-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
            color: #fff;
        }

        .metric-icon.icon-blue {
            background: linear-gradient(135deg, #1a5cb5, #1e6fd9);
        }
        .metric-icon.icon-gold {
            background: linear-gradient(135deg, #f0a030, #f5b84d);
        }
        .metric-icon.icon-green {
            background: linear-gradient(135deg, #10b981, #34d399);
        }
        .metric-icon.icon-purple {
            background: linear-gradient(135deg, #7c3aed, #a78bfa);
        }

        .metric-value {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text);
            font-family: var(--font-heading);
            line-height: 1;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .metric-trend {
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 6px;
            display: inline-flex;
            align-items: center;
            gap: 3px;
        }

        .metric-trend.up {
            color: var(--success);
        }
        .metric-trend.down {
            color: var(--danger);
        }

        /* ==================== Service Matrix ==================== */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .matrix-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }

        .matrix-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 4px 4px 0 0;
            opacity: 0;
            transition: opacity var(--transition-slow);
        }

        .matrix-card:hover::before {
            opacity: 1;
        }

        .matrix-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .matrix-card .matrix-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            background: var(--primary-light);
            color: var(--primary);
        }

        .matrix-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .matrix-card p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
        }

        .matrix-card .matrix-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 8px;
        }

        .matrix-tag {
            font-size: 0.75rem;
            padding: 4px 10px;
            border-radius: 14px;
            background: var(--bg);
            color: var(--text-secondary);
            font-weight: 500;
            border: 1px solid var(--border-light);
        }

        /* ==================== Comparison Table ==================== */
        .comparison-wrap {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.93rem;
        }

        .comparison-table thead th {
            background: #0f1a2e;
            color: #fff;
            padding: 16px 20px;
            font-weight: 700;
            text-align: center;
            font-family: var(--font-heading);
            letter-spacing: 0.5px;
            font-size: 0.95rem;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            background: #1a2d4a;
            border-radius: 0;
        }

        .comparison-table tbody td {
            padding: 14px 20px;
            text-align: center;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-secondary);
            vertical-align: middle;
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
            background: #fafbfc;
        }

        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }

        .comparison-table tbody tr:hover td {
            background: #f8fafd;
        }

        .comparison-table .rank-badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 16px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.3px;
        }

        .rank-badge.gold {
            background: #fef7ed;
            color: #b87514;
            border: 1px solid #f0a030;
        }
        .rank-badge.silver {
            background: #f1f5f9;
            color: #64748b;
            border: 1px solid #cbd5e1;
        }
        .rank-badge.bronze {
            background: #fef9f0;
            color: #b85c1a;
            border: 1px solid #e8a87c;
        }

        .comparison-table .highlight-cell {
            color: var(--primary);
            font-weight: 700;
        }

        /* ==================== Highlights Section ==================== */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .highlight-card {
            display: flex;
            gap: 20px;
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            align-items: flex-start;
        }

        .highlight-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
        }

        .highlight-card .hl-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            background: var(--primary-light);
            color: var(--primary);
        }

        .highlight-card .hl-info h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text);
        }

        .highlight-card .hl-info p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* ==================== Process Steps ==================== */
        .process-steps {
            display: flex;
            gap: 0;
            position: relative;
            justify-content: space-between;
            flex-wrap: nowrap;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 8%;
            right: 8%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-light), var(--primary), var(--primary-light));
            border-radius: 2px;
            z-index: 0;
        }

        .process-step {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 10px;
            min-width: 120px;
        }

        .step-circle {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            font-family: var(--font-heading);
            position: relative;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .process-step:hover .step-circle {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 8px 24px rgba(26, 92, 181, 0.35);
            transform: scale(1.06);
        }

        .process-step h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text);
        }

        .process-step p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin: 0;
        }

        /* ==================== Past Events ==================== */
        .events-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .event-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
        }

        .event-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

        .event-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 3px solid var(--primary-light);
        }

        .event-card-body {
            padding: 18px 20px;
        }

        .event-card-body h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }

        .event-card-body .event-meta {
            font-size: 0.82rem;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .event-card-body .event-meta i {
            color: var(--primary);
            margin-right: 3px;
        }

        .event-card-body p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .event-card-body .btn-sm-outline {
            font-size: 0.82rem;
            padding: 6px 16px;
            border-radius: 18px;
            border: 1.5px solid var(--primary);
            color: var(--primary);
            background: transparent;
            font-weight: 600;
            transition: all var(--transition);
            display: inline-block;
            text-decoration: none;
        }

        .event-card-body .btn-sm-outline:hover {
            background: var(--primary);
            color: #fff;
        }

        /* ==================== FAQ ==================== */
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
        }

        .faq-question {
            padding: 18px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 700;
            font-size: 1rem;
            color: var(--text);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-body);
            transition: color var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            transition: transform var(--transition);
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: none;
        }

        .faq-answer.show {
            display: block;
        }

        /* ==================== CTA Section ==================== */
        .cta-section {
            background: linear-gradient(160deg, #0d3d7a 0%, #1a5cb5 50%, #0d3d7a 100%);
            padding: 56px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
        }

        .cta-content {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 1.05rem;
            margin-bottom: 24px;
            line-height: 1.6;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: 28px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.95rem;
            font-family: var(--font-body);
            transition: all var(--transition);
            outline: none;
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-form input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.08);
        }

        .cta-form .btn-cta-submit {
            padding: 13px 28px;
            border-radius: 28px;
            background: var(--accent);
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.5px;
            box-shadow: 0 4px 16px rgba(240, 160, 48, 0.4);
            white-space: nowrap;
        }

        .cta-form .btn-cta-submit:hover {
            background: #e8991e;
            box-shadow: 0 8px 24px rgba(240, 160, 48, 0.55);
            transform: translateY(-1px);
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #0f1a2e;
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            color: #fff;
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.4px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
                text-align: center;
            }

            .hero-text h1 {
                font-size: 2.2rem;
            }

            .hero-countdown-wrap {
                justify-content: center;
            }

            .hero-actions {
                justify-content: center;
            }

            .hero-visual {
                order: -1;
            }

            .hero-visual-card {
                max-width: 340px;
                margin: 0 auto;
            }

            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .matrix-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .highlights-grid {
                grid-template-columns: 1fr 1fr;
            }

            .events-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-steps {
                flex-wrap: wrap;
                gap: 20px;
                justify-content: center;
            }

            .process-steps::before {
                display: none;
            }

            .process-step {
                flex: 0 0 auto;
                width: 160px;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: auto;
                min-height: 60px;
                padding: 8px 0;
            }

            .site-header .container-custom {
                flex-wrap: wrap;
                gap: 8px;
            }

            .nav-logo {
                font-size: 1.2rem;
            }

            .nav-tabs-chips {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding: 4px 0;
                gap: 4px;
            }

            .nav-chip {
                padding: 6px 12px;
                font-size: 0.78rem;
                border-radius: 18px;
            }

            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.8rem;
                border-radius: 20px;
            }

            .mobile-menu-toggle {
                display: block;
                order: 2;
            }

            .hero-section {
                min-height: auto;
                padding: 40px 0;
            }

            .hero-text h1 {
                font-size: 1.7rem;
            }

            .countdown-item {
                padding: 10px 12px;
                min-width: 56px;
            }

            .countdown-item .count-num {
                font-size: 1.6rem;
            }

            .section-block {
                padding: 40px 0;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .matrix-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .highlights-grid {
                grid-template-columns: 1fr;
            }

            .events-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .comparison-table {
                font-size: 0.78rem;
            }

            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 8px;
            }

            .process-steps {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }

            .process-step {
                width: 100%;
                max-width: 280px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                gap: 6px;
                text-align: center;
            }

            .cta-form {
                flex-direction: column;
                align-items: center;
            }

            .cta-form input {
                width: 100%;
                min-width: auto;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.4rem;
            }

            .hero-countdown-wrap {
                gap: 8px;
            }

            .countdown-item {
                padding: 8px 10px;
                min-width: 48px;
            }

            .countdown-item .count-num {
                font-size: 1.3rem;
            }

            .countdown-item .count-label {
                font-size: 0.68rem;
            }

            .btn-hero-primary,
            .btn-hero-outline {
                padding: 10px 18px;
                font-size: 0.85rem;
                border-radius: 22px;
            }

            .section-title {
                font-size: 1.3rem;
            }

            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .metric-card {
                padding: 20px 16px;
            }

            .metric-value {
                font-size: 1.8rem;
            }

            .comparison-table {
                font-size: 0.7rem;
            }

            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 8px 6px;
            }

            .nav-tabs-chips {
                gap: 3px;
            }

            .nav-chip {
                padding: 5px 10px;
                font-size: 0.72rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1a5cb5;
            --primary-dark: #0d3d7a;
            --primary-light: #e8f1fb;
            --secondary: #1e6fd9;
            --accent: #f0a030;
            --accent-light: #fef7ed;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b919e;
            --border: #e2e7ef;
            --border-light: #eef1f6;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
        }

        .nav-logo:hover {
            color: var(--primary);
        }

        .nav-logo i {
            color: var(--accent);
            margin-right: 6px;
            font-size: 1.3rem;
        }

        .nav-tabs-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }

        .nav-tabs-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.3px;
        }

        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary-light);
        }

        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 92, 181, 0.3);
        }

        .nav-chip i {
            margin-right: 5px;
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.4px;
            box-shadow: 0 3px 12px rgba(240, 160, 48, 0.35);
        }

        .nav-cta-btn:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 160, 48, 0.45);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: var(--border-light);
        }

        /* ==================== Hero Section ==================== */
        .hero-security {
            position: relative;
            background: linear-gradient(160deg, #0d3d7a 0%, #1a5cb5 40%, #1e6fd9 100%);
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 80px 0 90px;
            overflow: hidden;
            min-height: 560px;
            display: flex;
            align-items: center;
        }

        .hero-security::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(13, 61, 122, 0.65);
            z-index: 1;
        }

        .hero-security .container-custom {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 30px;
            padding: 8px 18px;
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
            animation: fadeInUp 0.6s ease;
        }

        .hero-badge i {
            color: var(--accent);
            font-size: 1rem;
        }

        .hero-security h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            animation: fadeInUp 0.7s ease;
        }

        .hero-security h1 span {
            color: var(--accent);
            position: relative;
        }

        .hero-security .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.9);
            line-height: 1.7;
            margin-bottom: 28px;
            animation: fadeInUp 0.8s ease;
            max-width: 480px;
        }

        .hero-security .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            animation: fadeInUp 0.9s ease;
        }

        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            letter-spacing: 0.4px;
            box-shadow: 0 6px 24px rgba(240, 160, 48, 0.45);
            transition: all var(--transition);
            text-decoration: none;
        }

        .btn-hero-primary:hover {
            background: #e89b20;
            color: #fff;
            box-shadow: 0 10px 32px rgba(240, 160, 48, 0.55);
            transform: translateY(-2px);
        }

        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            letter-spacing: 0.4px;
            transition: all var(--transition);
            text-decoration: none;
        }

        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* Countdown Ring */
        .countdown-ring-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            animation: fadeInUp 1s ease;
        }

        .countdown-ring-container {
            position: relative;
            width: 200px;
            height: 200px;
        }

        .countdown-ring-container svg {
            transform: rotate(-90deg);
            width: 200px;
            height: 200px;
        }

        .countdown-ring-bg {
            fill: none;
            stroke: rgba(255, 255, 255, 0.2);
            stroke-width: 10;
        }

        .countdown-ring-progress {
            fill: none;
            stroke: var(--accent);
            stroke-width: 10;
            stroke-linecap: round;
            transition: stroke-dashoffset 1s ease;
        }

        .countdown-ring-text {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            color: #fff;
        }

        .countdown-ring-text .countdown-number {
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1;
            color: #fff;
        }

        .countdown-ring-text .countdown-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 4px;
        }

        /* Carousel dots */
        .hero-carousel-dots {
            display: flex;
            gap: 10px;
            margin-top: 20px;
            justify-content: center;
        }

        .hero-carousel-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.4);
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            padding: 0;
        }

        .hero-carousel-dot.active {
            background: var(--accent);
            width: 28px;
            border-radius: 10px;
            box-shadow: 0 0 12px rgba(240, 160, 48, 0.5);
        }

        .hero-carousel-dot:hover {
            background: rgba(255, 255, 255, 0.7);
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ==================== Section Common ==================== */
        .section-padding {
            padding: 72px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }

        .section-header .section-divider {
            width: 56px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
            margin: 14px auto;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ==================== Metrics Dashboard ==================== */
        .metrics-dashboard {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 40px 32px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: -40px;
            position: relative;
            z-index: 3;
            border: 1px solid var(--border-light);
        }

        .metric-card {
            text-align: center;
            padding: 20px 16px;
            border-radius: var(--radius);
            background: var(--bg);
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .metric-card:hover {
            box-shadow: var(--shadow-card);
            border-color: var(--border);
            transform: translateY(-2px);
            background: var(--bg-white);
        }

        .metric-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.5rem;
            color: var(--primary);
        }

        .metric-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            line-height: 1.2;
            font-family: var(--font-heading);
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 6px;
            font-weight: 500;
        }

        .metric-suffix {
            font-size: 1rem;
            font-weight: 600;
            color: var(--primary);
        }

        /* ==================== Service Matrix ==================== */
        .service-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }

        .service-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: opacity var(--transition);
        }

        .service-card:hover::before {
            opacity: 1;
        }

        .service-card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .service-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        .service-card .service-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 14px;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--accent-light);
            color: #c07820;
            margin-top: 12px;
        }

        /* ==================== Comparison Section ==================== */
        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: stretch;
        }

        .comparison-panel {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
        }

        .comparison-panel.negative {
            border-left: 5px solid #e0c0c0;
            background: #fefafa;
        }

        .comparison-panel.positive {
            border-left: 5px solid #4caf84;
            background: #f8fdfa;
            box-shadow: var(--shadow-lg);
        }

        .comparison-panel h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .comparison-panel.negative h3 {
            color: #c0392b;
        }

        .comparison-panel.positive h3 {
            color: #2d7d46;
        }

        .comparison-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .comparison-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 0.95rem;
            color: var(--text-secondary);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            line-height: 1.5;
        }

        .comparison-list li:last-child {
            border-bottom: none;
        }

        .comparison-list li i {
            margin-top: 3px;
            flex-shrink: 0;
        }

        .comparison-list li i.fa-times-circle {
            color: #d9534f;
        }

        .comparison-list li i.fa-check-circle {
            color: #4caf84;
        }

        /* ==================== Tech Stack ==================== */
        .tech-stack-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .tech-stack-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 20px;
            transition: all var(--transition);
            align-items: flex-start;
        }

        .tech-stack-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-3px);
        }

        .tech-stack-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--primary-light), #dce8f6);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .tech-stack-info h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .tech-stack-info p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* ==================== FAQ ==================== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: none;
            border: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            transition: background var(--transition);
            font-family: var(--font-body);
            letter-spacing: 0.3px;
        }

        .faq-question:hover {
            background: var(--bg);
        }

        .faq-question i {
            transition: transform var(--transition);
            color: var(--primary);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ==================== CTA Form ==================== */
        .cta-form-section {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-lg);
            padding: 48px 40px;
            border: 1px solid var(--border-light);
        }

        .cta-form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-form-info h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }

        .cta-form-info p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .cta-benefit-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .cta-benefit-list li {
            padding: 8px 0;
            font-size: 0.95rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .cta-benefit-list li i {
            color: #4caf84;
            font-size: 1rem;
        }

        .cta-form-box {
            background: var(--bg);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
        }

        .cta-form-box h4 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 20px;
            text-align: center;
        }

        .cta-form-box .form-control {
            border-radius: var(--radius-sm);
            border: 1.5px solid var(--border);
            padding: 11px 16px;
            font-size: 0.95rem;
            transition: all var(--transition);
            background: var(--bg-white);
            font-family: var(--font-body);
        }

        .cta-form-box .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(26, 92, 181, 0.1);
            outline: none;
        }

        .btn-submit-cta {
            width: 100%;
            padding: 13px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            letter-spacing: 0.4px;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(26, 92, 181, 0.3);
            cursor: pointer;
        }

        .btn-submit-cta:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(26, 92, 181, 0.4);
            transform: translateY(-2px);
        }

        /* ==================== Brand Promise ==================== */
        .brand-promise {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            color: #fff;
            text-align: center;
            box-shadow: var(--shadow-lg);
        }

        .brand-promise h3 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: #fff;
        }

        .brand-promise p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 750px;
            margin: 0 auto;
        }

        .brand-promise .promise-seal {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 28px;
            padding: 10px 22px;
            margin-top: 20px;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.4px;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #1a1a2e;
            color: #c8ccd6;
            padding: 48px 0 28px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-col h4 {
            color: #fff;
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #a0a6b4;
            font-size: 0.9rem;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            font-size: 0.82rem;
            color: #8b8f9a;
            justify-content: center;
        }

        .footer-bottom a {
            color: #a0a6b4;
            text-decoration: none;
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .hero-security .container-custom {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 32px;
            }

            .hero-security .hero-subtitle {
                max-width: 100%;
            }

            .hero-security .hero-actions {
                justify-content: center;
            }

            .countdown-ring-container {
                width: 160px;
                height: 160px;
            }

            .countdown-ring-container svg {
                width: 160px;
                height: 160px;
            }

            .countdown-ring-text .countdown-number {
                font-size: 2rem;
            }

            .metrics-dashboard {
                grid-template-columns: repeat(2, 1fr);
                margin-top: 20px;
            }

            .service-matrix {
                grid-template-columns: repeat(2, 1fr);
            }

            .tech-stack-grid {
                grid-template-columns: 1fr;
            }

            .comparison-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-form-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero-security h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-tabs-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px;
                box-shadow: var(--shadow-lg);
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
                border: 1px solid var(--border-light);
                z-index: 1040;
                gap: 4px;
            }

            .nav-tabs-chips.show {
                display: flex;
            }

            .nav-chip {
                width: 100%;
                justify-content: flex-start;
                border-radius: var(--radius-sm);
                padding: 10px 16px;
            }

            .mobile-menu-toggle {
                display: block;
            }

            .nav-cta-btn {
                display: none;
            }

            .nav-cta-btn.mobile-visible {
                display: inline-flex;
                margin-top: 8px;
                width: 100%;
                justify-content: center;
            }

            .hero-security {
                padding: 50px 0 60px;
                min-height: auto;
            }

            .hero-security h1 {
                font-size: 1.8rem;
            }

            .metrics-dashboard {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
                padding: 24px 16px;
            }

            .metric-number {
                font-size: 1.6rem;
            }

            .service-matrix {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .section-padding {
                padding: 48px 0;
            }

            .section-header h2 {
                font-size: 1.5rem;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }

            .cta-form-section {
                padding: 28px 20px;
            }

            .brand-promise {
                padding: 32px 20px;
            }

            .countdown-ring-container {
                width: 140px;
                height: 140px;
            }

            .countdown-ring-container svg {
                width: 140px;
                height: 140px;
            }
        }

        @media (max-width: 520px) {
            .metrics-dashboard {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .hero-security h1 {
                font-size: 1.5rem;
            }

            .hero-security .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
            }

            .comparison-panel {
                padding: 24px 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .container-custom {
                padding: 0 16px;
            }

            .countdown-ring-container {
                width: 120px;
                height: 120px;
            }

            .countdown-ring-container svg {
                width: 120px;
                height: 120px;
            }

            .countdown-ring-text .countdown-number {
                font-size: 1.5rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1a5cb5;
            --primary-dark: #0d3d7a;
            --primary-light: #e8f1fb;
            --secondary: #1e6fd9;
            --accent: #f0a030;
            --accent-light: #fef7ed;
            --accent-dark: #d4881e;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b919e;
            --border: #e2e7ef;
            --border-light: #eef1f6;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.14);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo i {
            color: var(--accent);
            margin-right: 6px;
            font-size: 1.3rem;
        }
        .nav-tabs-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }
        .nav-tabs-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary-light);
        }
        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 92, 181, 0.3);
        }
        .nav-chip i {
            margin-right: 5px;
            font-size: 0.85rem;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.4px;
            box-shadow: 0 3px 12px rgba(240, 160, 48, 0.35);
            text-decoration: none;
        }
        .nav-cta-btn:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 160, 48, 0.45);
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            transform: translateY(0);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .mobile-menu-toggle:hover {
            background: var(--bg);
        }

        /* ==================== Hero Section ==================== */
        .hero-vip {
            position: relative;
            background: linear-gradient(160deg, #0d3d7a 0%, #1a4a8a 30%, #1a5cb5 60%, #1e6fd9 100%);
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero-vip::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-vip::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(240, 160, 48, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-vip .container-custom {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            width: 100%;
        }
        .hero-vip-left {
            color: #fff;
        }
        .hero-vip-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }
        .hero-vip-left h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: #fff;
            letter-spacing: 0.5px;
        }
        .hero-vip-left h1 span {
            color: var(--accent);
        }
        .hero-vip-left .hero-desc {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, 0.85);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 480px;
        }
        .hero-vip-right {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-lg);
            padding: 32px;
            border: 1px solid rgba(255, 255, 255, 0.15);
            text-align: center;
            color: #fff;
        }
        .hero-vip-right .live-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #e74c3c;
            color: #fff;
            padding: 6px 14px;
            border-radius: 16px;
            font-size: 0.82rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
            animation: pulse-live 2s infinite;
        }
        @keyframes pulse-live {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.6);
            }
            50% {
                box-shadow: 0 0 0 14px rgba(231, 76, 60, 0);
            }
        }
        .hero-vip-right .live-label .dot {
            width: 8px;
            height: 8px;
            background: #fff;
            border-radius: 50%;
            animation: blink-dot 1s infinite;
        }
        @keyframes blink-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }
        .hero-vip-right .live-cover {
            width: 100%;
            border-radius: var(--radius);
            margin-bottom: 16px;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        .hero-vip-right .live-title {
            font-weight: 600;
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: #fff;
        }
        .hero-vip-right .live-subtitle {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
        }
        .countdown-row {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-bottom: 20px;
        }
        .countdown-item {
            background: rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            min-width: 56px;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.18);
        }
        .countdown-item .cd-num {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.1;
        }
        .countdown-item .cd-label {
            font-size: 0.7rem;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.4px;
        }
        .btn-subscribe-live {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 11px 28px;
            border-radius: 24px;
            font-size: 0.95rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.4px;
            box-shadow: 0 4px 16px rgba(240, 160, 48, 0.4);
            cursor: pointer;
        }
        .btn-subscribe-live:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 24px rgba(240, 160, 48, 0.55);
            transform: translateY(-2px);
        }

        /* ==================== Section Common ==================== */
        .section-padding {
            padding: 64px 0;
        }
        .section-padding-lg {
            padding: 80px 0;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.4px;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 40px;
            max-width: 600px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ==================== Stats Dashboard ==================== */
        .stats-dashboard {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 36px 28px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            border: 1px solid var(--border-light);
        }
        .stat-card {
            text-align: center;
            padding: 20px 16px;
            border-radius: var(--radius);
            background: var(--bg);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .stat-card:hover {
            background: var(--bg-white);
            box-shadow: var(--shadow-card);
            border-color: var(--border);
            transform: translateY(-3px);
        }
        .stat-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.3px;
            line-height: 1.2;
        }
        .stat-number .unit {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
        }
        .stat-label {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ==================== Tier Cards ==================== */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .tier-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            border: 2px solid var(--border-light);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .tier-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
            border-color: var(--primary-light);
        }
        .tier-card.featured {
            border-color: var(--accent);
            background: linear-gradient(180deg, #fffdf7 0%, #fff 40%);
            box-shadow: var(--shadow);
        }
        .tier-card.featured::before {
            content: '推荐';
            position: absolute;
            top: 14px;
            right: -28px;
            background: var(--accent);
            color: #fff;
            padding: 4px 30px;
            font-size: 0.75rem;
            font-weight: 600;
            transform: rotate(45deg);
            letter-spacing: 0.5px;
        }
        .tier-badge-icon {
            font-size: 2.4rem;
            margin-bottom: 12px;
            display: block;
        }
        .tier-name {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .tier-threshold {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 14px;
        }
        .tier-benefit-list {
            list-style: none;
            padding: 0;
            margin: 0 0 18px;
            text-align: left;
        }
        .tier-benefit-list li {
            font-size: 0.88rem;
            color: var(--text-secondary);
            padding: 5px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            gap: 7px;
        }
        .tier-benefit-list li:last-child {
            border-bottom: none;
        }
        .tier-benefit-list li i {
            color: #27ae60;
            font-size: 0.8rem;
            flex-shrink: 0;
        }
        .tier-cta {
            display: inline-block;
            padding: 9px 24px;
            border-radius: 22px;
            font-size: 0.88rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.3px;
            text-decoration: none;
        }
        .tier-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 92, 181, 0.35);
            transform: translateY(-2px);
        }
        .tier-cta.outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .tier-cta.outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            box-shadow: none;
        }

        /* ==================== Comparison Table ==================== */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            background: var(--bg-white);
            border: 1px solid var(--border-light);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }
        .compare-table thead th {
            background: var(--primary-dark);
            color: #fff;
            padding: 16px 18px;
            font-weight: 600;
            font-size: 0.95rem;
            text-align: center;
            letter-spacing: 0.4px;
            white-space: nowrap;
        }
        .compare-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }
        .compare-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }
        .compare-table tbody td {
            padding: 14px 18px;
            text-align: center;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-light);
            vertical-align: middle;
        }
        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
        }
        .compare-table tbody tr:hover {
            background: var(--primary-light);
        }
        .compare-table .check-icon {
            color: #27ae60;
            font-size: 1.1rem;
        }
        .compare-table .cross-icon {
            color: #c0c4cc;
            font-size: 1.1rem;
        }
        .compare-table .star-icon {
            color: var(--accent);
            font-size: 1.1rem;
        }

        /* ==================== Game Cards ==================== */
        .game-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .game-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            border: 1px solid var(--border-light);
        }
        .game-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .game-card img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }
        .game-card-body {
            padding: 18px 20px;
        }
        .game-card-body h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
        .game-card-body p {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 12px;
            line-height: 1.5;
        }
        .game-card-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.3px;
        }

        /* ==================== Growth Path ==================== */
        .growth-path {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 0;
            position: relative;
            padding: 20px 0;
        }
        .growth-path::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 8%;
            right: 8%;
            height: 3px;
            background: linear-gradient(90deg, #c0c4cc, var(--primary), var(--accent));
            border-radius: 2px;
            z-index: 0;
        }
        .growth-step {
            text-align: center;
            position: relative;
            z-index: 1;
            flex: 1;
            max-width: 180px;
        }
        .growth-step .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 3px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-secondary);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .growth-step.active .step-circle {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 92, 181, 0.35);
        }
        .growth-step .step-label {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            margin-bottom: 4px;
        }
        .growth-step .step-detail {
            font-size: 0.8rem;
            color: var(--text-muted);
            line-height: 1.4;
        }

        /* ==================== Benefits Grid ==================== */
        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .benefit-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            padding: 24px 20px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }
        .benefit-item:hover {
            box-shadow: var(--shadow);
            border-color: var(--primary-light);
            transform: translateY(-3px);
        }
        .benefit-icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.3rem;
            color: var(--primary);
        }
        .benefit-info h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .benefit-info p {
            font-size: 0.84rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ==================== FAQ ==================== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            padding: 18px 24px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            letter-spacing: 0.3px;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--text-muted);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ==================== CTA Section ==================== */
        .cta-section {
            background: linear-gradient(150deg, #0d3d7a 0%, #1a5cb5 50%, #1e6fd9 100%);
            border-radius: var(--radius-xl);
            padding: 52px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-form-row {
            display: flex;
            gap: 10px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
            max-width: 480px;
            margin: 0 auto;
        }
        .cta-form-row input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border-radius: 26px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: all var(--transition);
            font-family: var(--font-body);
        }
        .cta-form-row input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .cta-form-row input:focus {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.08);
        }
        .cta-form-row .btn-cta-submit {
            padding: 12px 28px;
            border-radius: 26px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            letter-spacing: 0.4px;
            transition: all var(--transition);
            box-shadow: 0 4px 16px rgba(240, 160, 48, 0.4);
            cursor: pointer;
            white-space: nowrap;
        }
        .cta-form-row .btn-cta-submit:hover {
            background: #e09220;
            box-shadow: 0 6px 22px rgba(240, 160, 48, 0.55);
            transform: translateY(-2px);
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #1a1a2e;
            color: #ccc;
            padding: 48px 0 0;
            margin-top: 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .site-footer h4 {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }
        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: #aaa;
            font-size: 0.88rem;
            transition: color var(--transition);
        }
        .site-footer ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: #888;
        }
        .footer-bottom a {
            color: #aaa;
            font-size: 0.8rem;
            transition: color var(--transition);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        .footer-bottom span {
            color: #777;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .hero-vip .container-custom {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-vip-left h1 {
                font-size: 2.1rem;
            }
            .hero-vip {
                min-height: auto;
                padding: 48px 0;
            }
            .tier-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-dashboard {
                grid-template-columns: repeat(2, 1fr);
            }
            .game-cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .growth-path {
                flex-wrap: wrap;
                justify-content: center;
                gap: 24px;
            }
            .growth-path::before {
                display: none;
            }
            .growth-step {
                max-width: 140px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .nav-tabs-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 12px 16px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow);
                z-index: 1040;
            }
            .nav-tabs-chips.open {
                display: flex;
            }
            .nav-chip {
                width: 100%;
                justify-content: flex-start;
                border-radius: 10px;
                padding: 10px 16px;
                font-size: 0.9rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-cta-btn {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
            .hero-vip-left h1 {
                font-size: 1.7rem;
            }
            .hero-vip-right {
                padding: 20px;
            }
            .tier-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-dashboard {
                grid-template-columns: repeat(2, 1fr);
                padding: 20px 14px;
                gap: 12px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .game-cards-grid {
                grid-template-columns: 1fr;
            }
            .benefits-grid {
                grid-template-columns: 1fr;
            }
            .compare-table-wrap {
                border-radius: var(--radius);
            }
            .cta-section {
                padding: 36px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .cta-form-row {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-form-row input {
                min-width: auto;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-padding {
                padding: 40px 0;
            }
            .section-padding-lg {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .growth-path {
                flex-direction: column;
                align-items: center;
                gap: 20px;
            }
            .growth-step {
                max-width: 100%;
            }
            .countdown-item {
                min-width: 44px;
                padding: 8px 10px;
            }
            .countdown-item .cd-num {
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .tier-grid {
                grid-template-columns: 1fr;
            }
            .stats-dashboard {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-card {
                padding: 14px 8px;
            }
            .stat-number {
                font-size: 1.4rem;
            }
            .hero-vip-left h1 {
                font-size: 1.5rem;
            }
            .hero-vip-right .live-cover {
                aspect-ratio: 16 / 9;
            }
            .countdown-row {
                gap: 6px;
            }
            .countdown-item {
                min-width: 38px;
                padding: 6px 8px;
            }
            .countdown-item .cd-num {
                font-size: 1.1rem;
            }
            .countdown-item .cd-label {
                font-size: 0.65rem;
            }
            .container-custom {
                padding: 0 14px;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #1a5cb5;
            --primary-dark: #0d3d7a;
            --primary-light: #e8f1fb;
            --secondary: #1e6fd9;
            --accent: #f0a030;
            --accent-light: #fef7ed;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b919e;
            --border: #e2e7ef;
            --border-light: #eef1f6;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
        }
        .nav-logo:hover {
            color: var(--primary);
        }
        .nav-logo i {
            color: var(--accent);
            margin-right: 6px;
            font-size: 1.3rem;
        }
        .nav-tabs-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }
        .nav-tabs-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.3px;
        }
        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary-light);
        }
        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 92, 181, 0.3);
        }
        .nav-chip i {
            margin-right: 5px;
            font-size: 0.85rem;
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.4px;
            box-shadow: 0 3px 12px rgba(240, 160, 48, 0.35);
        }
        .nav-cta-btn:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 160, 48, 0.45);
            transform: translateY(-1px);
        }
        .nav-cta-btn:active {
            transform: translateY(0);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }
        .mobile-menu-toggle:hover {
            background: var(--border-light);
        }

        /* ==================== Hero Section ==================== */
        .hero-section {
            position: relative;
            background: linear-gradient(160deg, #0d3d7a 0%, #1a5cb5 35%, #1e6fd9 70%, #0d3d7a 100%);
            min-height: 580px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 60px 0;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -80px;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
            z-index: 0;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .hero-left {
            flex: 1 1 480px;
            color: #fff;
        }
        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(4px);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            color: #ffd78b;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-badge i {
            margin-right: 6px;
            animation: pulse-dot 1.5s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.4;
            }
        }
        .hero-left h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            color: #fff;
        }
        .hero-left h1 span {
            color: #ffd78b;
            display: inline-block;
        }
        .hero-left .hero-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .hero-carousel-dots {
            display: flex;
            gap: 8px;
            margin-bottom: 24px;
            align-items: center;
        }
        .carousel-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.4);
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            padding: 0;
        }
        .carousel-dot.active {
            background: #ffd78b;
            width: 28px;
            border-radius: 12px;
        }
        .carousel-dot:hover {
            background: rgba(255, 255, 255, 0.7);
        }
        .hero-sellpoint {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 20px;
            min-height: 28px;
            transition: all 0.4s ease;
            font-weight: 500;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-hero-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.4px;
            box-shadow: 0 6px 24px rgba(240, 160, 48, 0.45);
            text-decoration: none;
        }
        .btn-hero-primary:hover {
            background: #e8961a;
            color: #fff;
            box-shadow: 0 10px 32px rgba(240, 160, 48, 0.55);
            transform: translateY(-2px);
        }
        .btn-hero-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: all var(--transition);
            letter-spacing: 0.4px;
            text-decoration: none;
        }
        .btn-hero-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-right {
            flex: 0 0 340px;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .countdown-wrapper {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .countdown-ring {
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            border: 3px solid rgba(255, 255, 255, 0.25);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
            backdrop-filter: blur(2px);
        }
        .countdown-ring .countdown-num {
            font-size: 2rem;
            font-weight: 700;
            color: #ffd78b;
            line-height: 1;
            font-family: var(--font-heading);
        }
        .countdown-ring .countdown-label {
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 2px;
            letter-spacing: 0.5px;
        }

        /* ==================== Section Common ==================== */
        .section-block {
            padding: 64px 0;
        }
        .section-block.section-alt {
            background: var(--bg-white);
        }
        .section-block.section-dark {
            background: #0d1b2e;
            color: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 5px 14px;
            border-radius: 16px;
            letter-spacing: 0.5px;
            margin-bottom: 10px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: 0.3px;
        }
        .section-dark .section-title {
            color: #fff;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.6;
        }
        .section-dark .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        /* ==================== Metrics Dashboard ==================== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }
        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .metric-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--primary);
            border-radius: 0 0 3px 3px;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .metric-card:hover::after {
            opacity: 1;
        }
        .metric-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .metric-value {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text);
            font-family: var(--font-heading);
            letter-spacing: 0.5px;
            margin-bottom: 4px;
        }
        .metric-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ==================== Service Matrix ==================== */
        .service-matrix {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .platform-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 2px solid transparent;
            transition: all var(--transition-slow);
            position: relative;
        }
        .platform-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .platform-card.featured {
            border-color: var(--accent);
            background: #fffefb;
        }
        .platform-card.featured::before {
            content: '推荐';
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            letter-spacing: 0.5px;
        }
        .platform-icon {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 14px;
        }
        .platform-card h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
        }
        .platform-card .platform-version {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .platform-card .platform-size {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 16px;
            background: var(--bg);
            display: inline-block;
            padding: 3px 10px;
            border-radius: 10px;
        }
        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.4px;
            text-decoration: none;
        }
        .btn-download:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(26, 92, 181, 0.35);
            transform: translateY(-2px);
        }
        .btn-download-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            transition: all var(--transition);
            letter-spacing: 0.4px;
            text-decoration: none;
        }
        .btn-download-outline:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ==================== Steps Flow ==================== */
        .steps-flow {
            display: flex;
            gap: 0;
            align-items: stretch;
            position: relative;
            flex-wrap: wrap;
        }
        .steps-flow::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: var(--border);
            z-index: 0;
            display: block;
        }
        .step-item {
            flex: 1 1 200px;
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 0 16px;
        }
        .step-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-white);
            border: 3px solid var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-heading);
            transition: all var(--transition);
            box-shadow: 0 0 0 8px var(--bg);
        }
        .step-item:hover .step-circle {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 0 0 12px var(--primary-light);
        }
        .step-item h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--text);
        }
        .step-item p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ==================== Comparison Table ==================== */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            background: var(--bg-white);
        }
        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
            font-size: 0.95rem;
        }
        .compare-table thead th {
            background: #0d1b2e;
            color: #fff;
            padding: 16px 18px;
            font-weight: 600;
            text-align: center;
            font-family: var(--font-heading);
            letter-spacing: 0.4px;
            white-space: nowrap;
        }
        .compare-table thead th:first-child {
            text-align: left;
            border-radius: var(--radius-lg) 0 0 0;
        }
        .compare-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }
        .compare-table tbody td {
            padding: 14px 18px;
            text-align: center;
            border-bottom: 1px solid var(--border-light);
            color: var(--text-secondary);
        }
        .compare-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
        }
        .compare-table tbody tr:hover {
            background: var(--primary-light);
        }
        .compare-table .check-icon {
            color: #22c55e;
            font-size: 1.1rem;
        }
        .compare-table .dash-icon {
            color: #cbd5e1;
        }
        .compare-table .highlight-col {
            background: #fefdf8;
        }
        .compare-table tbody tr.highlight-col:hover {
            background: #fef9e8;
        }

        /* ==================== System Requirements ==================== */
        .sys-req-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .sys-req-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--primary);
            transition: all var(--transition);
        }
        .sys-req-card:hover {
            box-shadow: var(--shadow-lg);
            border-left-color: var(--accent);
        }
        .sys-req-card h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text);
        }
        .sys-req-card h4 i {
            color: var(--primary);
        }
        .sys-req-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sys-req-card ul li {
            padding: 5px 0;
            font-size: 0.9rem;
            color: var(--text-secondary);
            border-bottom: 1px dotted var(--border-light);
            display: flex;
            justify-content: space-between;
        }
        .sys-req-card ul li:last-child {
            border-bottom: none;
        }
        .sys-req-card ul li span {
            font-weight: 600;
            color: var(--text);
        }

        /* ==================== Brand Intro ==================== */
        .brand-intro-block {
            background: var(--bg-white);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            box-shadow: var(--shadow);
            display: flex;
            gap: 32px;
            align-items: flex-start;
            flex-wrap: wrap;
            border: 1px solid var(--border-light);
        }
        .brand-intro-block .brand-intro-img {
            flex: 0 0 200px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .brand-intro-block .brand-intro-text {
            flex: 1 1 300px;
        }
        .brand-intro-block .brand-intro-text h3 {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }
        .brand-intro-block .brand-intro-text p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ==================== FAQ ==================== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow);
        }
        .faq-question {
            padding: 18px 22px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text);
            transition: all var(--transition);
            user-select: none;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-family: var(--font-body);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
        }
        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ==================== CTA Section ==================== */
        .cta-section {
            background: linear-gradient(135deg, #0d3d7a 0%, #1a5cb5 50%, #1e6fd9 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }
        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
            position: relative;
            z-index: 1;
        }
        .cta-form input {
            flex: 1 1 260px;
            padding: 12px 18px;
            border-radius: 26px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: all var(--transition);
            font-family: var(--font-body);
        }
        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .cta-form input:focus {
            border-color: #ffd78b;
            background: rgba(255, 255, 255, 0.18);
            box-shadow: 0 0 0 4px rgba(255, 215, 139, 0.15);
        }
        .btn-cta-submit {
            padding: 12px 28px;
            border-radius: 26px;
            font-size: 0.95rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.4px;
            white-space: nowrap;
            font-family: var(--font-body);
            box-shadow: 0 4px 16px rgba(240, 160, 48, 0.4);
        }
        .btn-cta-submit:hover {
            background: #e8961a;
            box-shadow: 0 8px 24px rgba(240, 160, 48, 0.5);
            transform: translateY(-2px);
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #0d1b2e;
            color: #c8d6e5;
            padding: 48px 0 24px;
            margin-top: 0;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 32px;
        }
        .site-footer .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.4px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 8px;
        }
        .site-footer .footer-col ul li a {
            color: #a0b4cc;
            transition: color var(--transition);
            font-size: 0.88rem;
            text-decoration: none;
        }
        .site-footer .footer-col ul li a:hover {
            color: #ffd78b;
            text-decoration: none;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: #7a8ea3;
        }
        .site-footer .footer-bottom a {
            color: #a0b4cc;
            text-decoration: none;
            transition: color var(--transition);
        }
        .site-footer .footer-bottom a:hover {
            color: #ffd78b;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .hero-left h1 {
                font-size: 2.2rem;
            }
            .hero-right {
                flex: 0 0 280px;
            }
            .countdown-ring {
                width: 72px;
                height: 72px;
            }
            .countdown-ring .countdown-num {
                font-size: 1.5rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .service-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            .sys-req-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-flow::before {
                left: 30px;
                right: 30px;
            }
            .compare-table-wrap {
                font-size: 0.85rem;
            }
        }
        @media (max-width: 768px) {
            .nav-tabs-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 12px;
                gap: 4px;
                box-shadow: var(--shadow-lg);
                border-bottom: 2px solid var(--border);
                z-index: 1040;
                border-radius: 0 0 var(--radius) var(--radius);
            }
            .nav-tabs-chips.mobile-open {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-cta-btn {
                font-size: 0.8rem;
                padding: 7px 14px;
            }
            .hero-section {
                min-height: auto;
                padding: 40px 0;
            }
            .hero-content {
                flex-direction: column;
                gap: 28px;
                text-align: center;
            }
            .hero-left h1 {
                font-size: 1.8rem;
            }
            .hero-right {
                flex: 0 0 auto;
                width: 100%;
            }
            .countdown-ring {
                width: 64px;
                height: 64px;
            }
            .countdown-ring .countdown-num {
                font-size: 1.3rem;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-carousel-dots {
                justify-content: center;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .service-matrix {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .steps-flow {
                flex-direction: column;
                gap: 24px;
            }
            .steps-flow::before {
                display: none;
            }
            .sys-req-grid {
                grid-template-columns: 1fr;
            }
            .compare-table-wrap {
                font-size: 0.8rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section-block {
                padding: 40px 0;
            }
            .brand-intro-block {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .brand-intro-block .brand-intro-img {
                flex: 0 0 auto;
                max-width: 180px;
            }
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .compare-table thead th,
            .compare-table tbody td {
                padding: 10px 12px;
                font-size: 0.78rem;
            }
        }
        @media (max-width: 520px) {
            .hero-left h1 {
                font-size: 1.5rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .countdown-wrapper {
                gap: 8px;
            }
            .countdown-ring {
                width: 56px;
                height: 56px;
                border-width: 2px;
            }
            .countdown-ring .countdown-num {
                font-size: 1.1rem;
            }
            .countdown-ring .countdown-label {
                font-size: 0.65rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .metric-card {
                padding: 18px 12px;
            }
            .metric-value {
                font-size: 1.6rem;
            }
            .service-matrix {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .platform-card {
                padding: 20px 16px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .btn-hero-primary,
            .btn-hero-outline {
                width: 100%;
                justify-content: center;
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .nav-logo {
                font-size: 1.1rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .cta-form {
                flex-direction: column;
            }
            .btn-cta-submit {
                width: 100%;
            }
            .compare-table {
                min-width: 500px;
                font-size: 0.72rem;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #1a5cb5;
            --primary-dark: #0d3d7a;
            --primary-light: #e8f1fb;
            --secondary: #1e6fd9;
            --accent: #f0a030;
            --accent-light: #fef7ed;
            --accent-dark: #d48a1c;
            --bg: #f6f8fb;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text: #1a1a2e;
            --text-secondary: #5a6070;
            --text-muted: #8b919e;
            --border: #e2e7ef;
            --border-light: #eef1f6;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.14);
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 50%;
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1240px;
            --nav-height: 68px;
            --section-gap: 80px;
            --section-gap-sm: 50px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ==================== Header & Navigation ==================== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container-custom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--primary-dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--transition);
        }

        .nav-logo:hover {
            color: var(--primary);
        }

        .nav-logo i {
            color: var(--accent);
            margin-right: 6px;
            font-size: 1.3rem;
        }

        .nav-tabs-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
            justify-content: center;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            padding: 4px 0;
        }

        .nav-tabs-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: 22px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            border: 1.5px solid transparent;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            text-decoration: none;
            letter-spacing: 0.3px;
        }

        .nav-chip:hover {
            color: var(--primary);
            background: var(--primary-light);
            border-color: var(--primary-light);
        }

        .nav-chip.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(26, 92, 181, 0.3);
        }

        .nav-chip i {
            margin-right: 5px;
            font-size: 0.85rem;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.4px;
            box-shadow: 0 3px 12px rgba(240, 160, 48, 0.35);
        }

        .nav-cta-btn:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 160, 48, 0.45);
            transform: translateY(-1px);
        }

        .nav-cta-btn:active {
            transform: translateY(0);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            padding: 6px;
            cursor: pointer;
            border-radius: 6px;
            transition: background var(--transition);
        }

        .mobile-menu-toggle:hover {
            background: var(--primary-light);
        }

        /* ==================== Section Common ==================== */
        .section {
            padding: var(--section-gap) 0;
        }

        .section-sm {
            padding: var(--section-gap-sm) 0;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.5rem;
            letter-spacing: 0.5px;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 2.5rem;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }

        .section-header .section-title {
            margin-bottom: 0.6rem;
        }

        .section-header .section-subtitle {
            margin-bottom: 0;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ==================== Buttons ==================== */
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.4px;
            box-shadow: 0 4px 14px rgba(26, 92, 181, 0.3);
        }

        .btn-primary-custom:hover {
            background: var(--primary-dark);
            color: #fff;
            box-shadow: 0 8px 24px rgba(26, 92, 181, 0.4);
            transform: translateY(-2px);
        }

        .btn-primary-custom:active {
            transform: translateY(0);
        }

        .btn-accent-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: var(--accent);
            color: #fff;
            border: none;
            transition: all var(--transition);
            letter-spacing: 0.4px;
            box-shadow: 0 4px 14px rgba(240, 160, 48, 0.35);
        }

        .btn-accent-custom:hover {
            background: #e09220;
            color: #fff;
            box-shadow: 0 8px 24px rgba(240, 160, 48, 0.45);
            transform: translateY(-2px);
        }

        .btn-accent-custom:active {
            transform: translateY(0);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 26px;
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 600;
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
            transition: all var(--transition);
            letter-spacing: 0.4px;
        }

        .btn-outline-custom:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(26, 92, 181, 0.25);
            transform: translateY(-2px);
        }

        .btn-outline-custom:active {
            transform: translateY(0);
        }

        .btn-lg-custom {
            padding: 15px 36px;
            font-size: 1.1rem;
            border-radius: 30px;
        }

        /* ==================== Cards ==================== */
        .card-custom {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            overflow: hidden;
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--border);
        }

        .card-custom .card-body-custom {
            padding: 28px 24px;
        }

        .card-custom .card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }

        .card-icon-blue {
            background: var(--primary-light);
            color: var(--primary);
        }

        .card-icon-accent {
            background: var(--accent-light);
            color: var(--accent);
        }

        .card-custom .card-title {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 0.5rem;
        }

        .card-custom .card-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }

        /* ==================== Hero Section ==================== */
        .hero-section {
            position: relative;
            padding: 60px 0 70px;
            background: linear-gradient(170deg, #f0f4fa 0%, #e8f1fb 30%, #f6f8fb 100%);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(26, 92, 181, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -40px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(240, 160, 48, 0.05) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            background: var(--accent-light);
            color: var(--accent-dark);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text);
            line-height: 1.25;
            margin-bottom: 1rem;
            letter-spacing: 0.5px;
        }

        .hero-title .highlight {
            color: var(--primary);
            position: relative;
        }

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 1.5rem;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 1.5rem;
        }

        /* Progress Ring */
        .progress-ring-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 2;
        }

        .progress-ring-container {
            position: relative;
            width: 220px;
            height: 220px;
            flex-shrink: 0;
        }

        .progress-ring-svg {
            transform: rotate(-90deg);
            width: 220px;
            height: 220px;
        }

        .progress-ring-bg {
            fill: none;
            stroke: #e2e7ef;
            stroke-width: 14;
        }

        .progress-ring-fill {
            fill: none;
            stroke: var(--primary);
            stroke-width: 14;
            stroke-linecap: round;
            transition: stroke-dashoffset 1.5s ease;
        }

        .progress-ring-fill-accent {
            fill: none;
            stroke: var(--accent);
            stroke-width: 14;
            stroke-linecap: round;
            transition: stroke-dashoffset 1.5s ease;
        }

        .progress-ring-center {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .progress-ring-value {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1;
        }

        .progress-ring-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Tier Cards */
        .tier-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            border: 2px solid var(--border-light);
            padding: 20px 22px;
            text-align: center;
            transition: all var(--transition-slow);
            position: relative;
            cursor: pointer;
            box-shadow: var(--shadow-sm);
        }

        .tier-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }

        .tier-card.featured {
            border-color: var(--accent);
            background: linear-gradient(180deg, #fffef9 0%, #ffffff 100%);
            box-shadow: 0 6px 24px rgba(240, 160, 48, 0.18);
        }

        .tier-card.featured::before {
            content: '热门';
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            padding: 4px 14px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .tier-card .tier-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            color: var(--primary);
        }

        .tier-card.featured .tier-icon {
            color: var(--accent);
        }

        .tier-card .tier-name {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text);
            margin-bottom: 4px;
        }

        .tier-card .tier-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 0;
        }

        .tier-card .tier-count {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* ==================== Stats Dashboard ==================== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            position: relative;
            overflow: hidden;
        }

        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .stat-card .stat-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .stat-card .stat-value {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--text);
            line-height: 1.1;
            margin-bottom: 4px;
        }

        .stat-card .stat-value .stat-suffix {
            font-size: 1rem;
            font-weight: 500;
            color: var(--text-secondary);
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .stat-card .stat-trend {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 12px;
            margin-top: 8px;
        }

        .stat-trend.up {
            background: #e8f5e9;
            color: #2e7d32;
        }

        .stat-trend.stable {
            background: #e8f1fb;
            color: #1a5cb5;
        }

        /* ==================== Service Matrix ==================== */
        .service-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .service-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: var(--primary-light);
        }

        .service-card .service-icon-wrap {
            width: 60px;
            height: 60px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 18px;
            flex-shrink: 0;
        }

        .service-card .service-title {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .service-card .service-desc {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
            flex-grow: 1;
        }

        .service-card .service-features {
            list-style: none;
            padding: 0;
            margin: 14px 0 0;
        }

        .service-card .service-features li {
            font-size: 0.9rem;
            color: var(--text-secondary);
            padding: 5px 0;
            padding-left: 22px;
            position: relative;
        }

        .service-card .service-features li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 5px;
            color: var(--primary);
            font-size: 0.75rem;
        }

        /* ==================== Comparison Table ==================== */
        .comparison-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            min-width: 700px;
        }

        .comparison-table thead th {
            background: var(--primary);
            color: #fff;
            padding: 16px 20px;
            font-weight: 600;
            font-size: 1rem;
            text-align: center;
            letter-spacing: 0.4px;
            border: none;
        }

        .comparison-table thead th:first-child {
            text-align: left;
            background: var(--primary-dark);
            border-radius: var(--radius-lg) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-lg) 0 0;
        }

        .comparison-table tbody td {
            padding: 14px 20px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            text-align: center;
            border-bottom: 1px solid var(--border-light);
            vertical-align: middle;
        }

        .comparison-table tbody td:first-child {
            text-align: left;
            font-weight: 600;
            color: var(--text);
        }

        .comparison-table tbody tr:hover {
            background: #fafbfd;
        }

        .comparison-table tbody tr:last-child td {
            border-bottom: none;
        }

        .comparison-table .check-icon {
            color: #2e7d32;
            font-size: 1.1rem;
        }

        .comparison-table .cross-icon {
            color: #c62828;
            font-size: 1.1rem;
        }

        .comparison-table .partial-icon {
            color: var(--accent);
            font-size: 1.1rem;
        }

        .comparison-highlight-col {
            background: #fefdf8;
            position: relative;
        }

        .comparison-highlight-col::after {
            content: '推荐';
            position: absolute;
            top: -28px;
            right: 16px;
            padding: 3px 12px;
            border-radius: 10px;
            font-size: 0.75rem;
            font-weight: 700;
            background: var(--accent);
            color: #fff;
            letter-spacing: 0.5px;
        }

        /* ==================== FAQ ==================== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            overflow: hidden;
        }

        .faq-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: none;
            border: none;
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            cursor: pointer;
            transition: color var(--transition);
            letter-spacing: 0.3px;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 12px;
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 18px;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* ==================== CTA Form ==================== */
        .cta-section {
            background: linear-gradient(160deg, #0f1a2e 0%, #142640 40%, #0d3d7a 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.03) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-section .section-title {
            color: #fff;
        }

        .cta-section .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }

        .cta-form-wrapper {
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 36px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(6px);
            max-width: 600px;
            margin: 0 auto;
        }

        .cta-form-wrapper .form-label {
            color: rgba(255, 255, 255, 0.85);
            font-weight: 500;
            font-size: 0.9rem;
            margin-bottom: 6px;
        }

        .cta-form-wrapper .form-control {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            transition: all var(--transition);
        }

        .cta-form-wrapper .form-control::placeholder {
            color: rgba(255, 255, 255, 0.4);
        }

        .cta-form-wrapper .form-control:focus {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.5);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.08);
            color: #fff;
            outline: none;
        }

        .cta-form-wrapper .form-select {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            font-size: 0.95rem;
            transition: all var(--transition);
        }

        .cta-form-wrapper .form-select:focus {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.5);
            box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.08);
            color: #fff;
            outline: none;
        }

        .cta-form-wrapper .form-select option {
            background: #1a1a2e;
            color: #fff;
        }

        .cta-benefits {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
            margin-top: 24px;
        }

        .cta-benefit-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.75);
        }

        .cta-benefit-item i {
            color: var(--accent);
            font-size: 1rem;
        }

        /* ==================== Community Feed ==================== */
        .community-feed {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .feed-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-slow);
            display: flex;
            flex-direction: column;
        }

        .feed-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .feed-card .feed-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .feed-card .feed-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .feed-card:hover .feed-img img {
            transform: scale(1.05);
        }

        .feed-card .feed-body {
            padding: 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .feed-card .feed-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.78rem;
            font-weight: 600;
            margin-bottom: 8px;
            background: var(--primary-light);
            color: var(--primary);
            width: fit-content;
        }

        .feed-card .feed-title {
            font-family: var(--font-heading);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .feed-card .feed-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex-grow: 1;
        }

        .feed-card .feed-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 10px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        /* ==================== Footer ==================== */
        .site-footer {
            background: #0f1a2e;
            color: rgba(255, 255, 255, 0.8);
            padding: 50px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 30px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }

        .footer-col p {
            font-size: 0.84rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.88rem;
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 20px 0;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition);
            text-decoration: none;
        }

        .footer-bottom a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom span {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ==================== Brand Intro ==================== */
        .brand-intro-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 36px 32px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-card);
            display: flex;
            gap: 28px;
            align-items: flex-start;
        }

        .brand-intro-card .brand-intro-icon {
            width: 70px;
            height: 70px;
            border-radius: var(--radius);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--primary);
            flex-shrink: 0;
        }

        .brand-intro-card .brand-intro-text h3 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .brand-intro-card .brand-intro-text p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ==================== Responsive ==================== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .service-matrix {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .community-feed {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .brand-intro-card {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
        }

        @media (max-width: 768px) {
            .nav-tabs-chips {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                z-index: 1049;
                gap: 4px;
                border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            }
            .nav-tabs-chips.mobile-open {
                display: flex;
            }
            .nav-chip {
                width: 100%;
                justify-content: flex-start;
                padding: 10px 16px;
                border-radius: var(--radius-sm);
                font-size: 0.95rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-cta-btn {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .section {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-card .stat-value {
                font-size: 1.8rem;
            }
            .service-matrix {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .community-feed {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 6px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .progress-ring-container {
                width: 160px;
                height: 160px;
            }
            .progress-ring-svg {
                width: 160px;
                height: 160px;
            }
            .progress-ring-value {
                font-size: 2rem;
            }
            .cta-form-wrapper {
                padding: 24px 20px;
            }
            .comparison-wrapper {
                margin: 0 -12px;
                border-radius: var(--radius);
            }
            .brand-intro-card {
                padding: 24px 20px;
            }
            .tier-card {
                padding: 16px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-card .stat-value {
                font-size: 1.6rem;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.3rem;
            }
            .container-custom {
                padding: 0 16px;
            }
            .progress-ring-container {
                width: 130px;
                height: 130px;
            }
            .progress-ring-svg {
                width: 130px;
                height: 130px;
            }
            .progress-ring-value {
                font-size: 1.6rem;
            }
            .tier-card .tier-name {
                font-size: 0.9rem;
            }
            .card-custom .card-body-custom {
                padding: 20px 16px;
            }
            .service-card {
                padding: 22px 18px;
            }
            .feed-card .feed-img {
                height: 160px;
            }
        }