/* roulang page: index */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --accent: #06b6d4;
            --bg-dark: #0b1426;
            --bg-light: #f0f4f8;
            --text-main: #1a202c;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'system-ui', -apple-system, BlinkMacSystemFont, Segoe UI, Roboto, PingFang SC, Hiragino Sans GB, Microsoft YaHei, sans-serif;
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.7;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all .25s ease;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input {
            font-family: inherit;
            outline: none;
        }

        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        /* Header */
        .site-header {
            background: var(--bg-dark);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .nav-link {
            padding: .45rem 1rem;
            border-radius: 10px;
            font-size: .92rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.78);
            transition: all .2s;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.35);
        }
        .hot-tag {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            padding: .2rem .7rem;
            border-radius: 999px;
            font-size: .8rem;
        }
        .header-search input {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            color: #fff;
            padding: .45rem 2.4rem .45rem 1rem;
            font-size: .85rem;
            width: 220px;
            transition: all .25s;
        }
        .header-search input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .header-search input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.12);
            width: 260px;
            box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
        }

        /* Buttons */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            padding: .7rem 1.6rem;
            border-radius: 12px;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
            transition: all .25s;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.45);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            border: 2px solid rgba(255, 255, 255, 0.25);
            color: #fff;
            font-weight: 500;
            font-size: .95rem;
            padding: .65rem 1.5rem;
            border-radius: 12px;
            transition: all .25s;
        }
        .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: var(--bg-dark);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: .35;
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, var(--bg-dark) 20%, rgba(11, 20, 38, 0.85) 55%, rgba(11, 20, 38, 0.45));
        }
        .hero-card {
            position: relative;
            z-index: 2;
        }
        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            padding: 1.3rem 1.6rem;
            backdrop-filter: blur(6px);
            transition: all .3s;
        }
        .stat-card:hover {
            background: rgba(255, 255, 255, 0.10);
            border-color: rgba(6, 182, 212, 0.35);
            transform: translateY(-4px);
        }
        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(120deg, #fff, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Section */
        .section-block {
            padding: 4.5rem 0;
        }
        .section-label {
            display: inline-block;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: 1px;
            padding: .3rem 1rem;
            border-radius: 999px;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            margin-bottom: 1rem;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: .5rem;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            max-width: 560px;
        }

        /* Feature Card */
        .feature-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: all .3s;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card img {
            height: 190px;
            object-fit: cover;
            width: 100%;
            transition: transform .5s;
        }
        .feature-card:hover img {
            transform: scale(1.05);
        }

        /* News list */
        .news-section {
            background: #fff;
        }
        .news-item {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            padding: 1.1rem 1.4rem;
            border-radius: 14px;
            border: 1px solid var(--border);
            background: #fff;
            transition: all .25s;
            margin-bottom: .8rem;
        }
        .news-item:hover {
            border-color: rgba(37, 99, 235, 0.3);
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
        }
        .news-tag {
            flex-shrink: 0;
            background: rgba(37, 99, 235, 0.08);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 600;
            padding: .2rem .7rem;
            border-radius: 999px;
            white-space: nowrap;
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            transition: color .2s;
        }
        .news-item:hover .news-title {
            color: var(--primary);
        }
        .news-desc {
            font-size: .85rem;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-top: .15rem;
        }
        .news-meta {
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: .6rem;
            font-size: .82rem;
            color: var(--text-muted);
        }
        .news-arrow {
            font-size: 1.1rem;
            color: var(--accent);
            opacity: 0;
            transform: translateX(-6px);
            transition: all .25s;
        }
        .news-item:hover .news-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        /* Steps */
        .step-card {
            position: relative;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all .3s;
        }
        .step-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .step-number {
            width: 50px;
            height: 50px;
            margin: 0 auto 1rem;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
        }

        /* FAQ */
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            overflow: hidden;
            margin-bottom: .8rem;
            transition: all .25s;
        }
        .faq-item.open {
            box-shadow: var(--shadow-md);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .faq-q {
            padding: 1.1rem 1.4rem;
            font-weight: 600;
            font-size: .98rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            user-select: none;
        }
        .faq-q .icon {
            color: var(--primary);
            font-size: 1rem;
            transition: transform .3s;
        }
        .faq-item.open .faq-q .icon {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .3s;
            padding: 0 1.4rem;
            color: var(--text-muted);
            font-size: .9rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding-bottom: 1.2rem;
        }

        /* CTA */
        .cta-section {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.2), transparent 60%);
        }

        /* Footer */
        .site-footer {
            background: #070d1a;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-link {
            display: block;
            padding: .25rem 0;
            font-size: .88rem;
            color: rgba(255, 255, 255, 0.6);
            transition: color .2s;
        }
        .footer-link:hover {
            color: var(--accent);
        }

        /* Mobile menu */
        .mobile-nav {
            display: none;
            background: var(--bg-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: .8rem 1rem;
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav a {
            display: block;
            padding: .6rem .8rem;
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.8);
            font-weight: 500;
        }
        .mobile-nav a:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
        }
        .mobile-nav a.active {
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .desktop-nav {
                display: none !important;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .hero-content {
                padding-top: 3rem;
                padding-bottom: 3rem;
            }
            .news-item {
                flex-wrap: wrap;
            }
            .news-desc {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .container-page {
                padding: 0 .85rem;
            }
            .section-block {
                padding: 3rem 0;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                justify-content: center;
            }
            .hero-buttons {
                flex-direction: column;
                gap: .8rem !important;
            }
            .stat-card {
                padding: 1rem;
            }
            .faq-q {
                font-size: .88rem;
                padding: .9rem 1rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --accent: #06b6d4;
            --accent-light: #22d3ee;
            --bg-dark: #0b1120;
            --bg-card: #111827;
            --bg-card-hover: #1a2332;
            --text-main: #f1f5f9;
            --text-body: #94a3b8;
            --text-muted: #64748b;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius-lg: 16px;
            --radius-md: 12px;
            --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.2);
            --shadow-hover: 0 8px 32px rgba(37, 99, 235, 0.15);
            --transition: all 0.3s ease;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        input {
            font-family: inherit;
        }
        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        .site-header {
            background: rgba(11, 17, 32, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: box-shadow 0.3s ease;
        }
        .site-header.is-scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
        }
        .desktop-nav {
            border-top: 1px solid var(--border-color);
            overflow-x: auto;
            scrollbar-width: none;
        }
        .desktop-nav::-webkit-scrollbar {
            display: none;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 10px;
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-link.active {
            color: #fff;
            background: rgba(37, 99, 235, 0.2);
            box-shadow: inset 0 0 0 1px rgba(37, 99, 235, 0.3);
        }
        .navbar-cta {
            background: linear-gradient(135deg, #2563eb, #06b6d4);
            color: #fff !important;
            border-radius: 10px;
            padding: 8px 18px;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
            white-space: nowrap;
        }
        .navbar-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
            filter: brightness(1.05);
            color: #fff !important;
        }
        .hot-tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
            color: var(--text-body);
            font-size: 12px;
            font-weight: 500;
            white-space: nowrap;
        }
        .header-search {
            position: relative;
        }
        .header-search input {
            width: 220px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            padding: 8px 36px 8px 14px;
            font-size: 13px;
            color: #f1f5f9;
            outline: none;
            transition: var(--transition);
        }
        .header-search input::placeholder {
            color: var(--text-muted);
        }
        .header-search input:focus {
            border-color: rgba(37, 99, 235, 0.5);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
            background: rgba(255, 255, 255, 0.08);
        }
        .mobile-nav {
            display: none;
            background: rgba(11, 17, 32, 0.98);
            border-top: 1px solid var(--border-color);
            padding: 12px 20px 20px;
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav a.nav-link {
            display: block;
            padding: 12px 14px;
            margin-bottom: 4px;
            border-radius: 10px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #2563eb, #06b6d4);
            color: #fff !important;
            border: none;
            border-radius: 12px;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.45);
            filter: brightness(1.05);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            text-decoration: none;
            color: #fff;
            background: rgba(255, 255, 255, 0.05);
            transition: var(--transition);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.3);
            transform: translateY(-2px);
        }
        .btn-outline:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .btn-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: #fff;
            color: #0b1120 !important;
            border: none;
            border-radius: 12px;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
        }
        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(255, 255, 255, 0.3);
        }
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background-image: linear-gradient(135deg, rgba(11, 17, 32, 0.82), rgba(15, 23, 42, 0.88)), url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .breadcrumb a {
            color: var(--text-body);
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--accent-light);
        }
        .breadcrumb i {
            font-size: 10px;
            opacity: 0.6;
        }
        .banner-title {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            background: linear-gradient(120deg, #fff, #93c5fd);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 16px;
        }
        .banner-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .section-block {
            padding: 70px 0;
        }
        .section-block-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(37, 99, 235, 0.12);
            border: 1px solid rgba(37, 99, 235, 0.3);
            color: #60a5fa;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 10px;
        }
        .section-subtitle {
            color: var(--text-body);
            font-size: 15px;
            max-width: 500px;
            margin: 0 auto;
        }
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(37, 99, 235, 0.25);
        }
        .card-img-wrapper {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
        }
        .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .card:hover .card-img-wrapper img {
            transform: scale(1.05);
        }
        .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(11, 17, 32, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
        }
        .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-color);
            color: var(--text-body);
            font-size: 12px;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag:hover {
            background: rgba(37, 99, 235, 0.15);
            color: #93c5fd;
            border-color: rgba(37, 99, 235, 0.3);
            transform: translateY(-1px);
        }
        .timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
            padding-left: 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 10px;
            bottom: 10px;
            width: 2px;
            background: linear-gradient(180deg, rgba(37, 99, 235, 0.6), rgba(6, 182, 212, 0.2));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding-left: 60px;
            padding-bottom: 38px;
        }
        .timeline-item:last-child {
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: 13px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: linear-gradient(135deg, #2563eb, #06b6d4);
            border: 3px solid rgba(11, 17, 32, 0.9);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.25);
        }
        .timeline-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            font-weight: 500;
        }
        .timeline-date i {
            color: var(--accent);
        }
        .timeline-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .timeline-desc {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 16px 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            transition: var(--transition);
        }
        .ranking-item:hover {
            background: var(--bg-card-hover);
            transform: translateX(6px);
            border-color: rgba(37, 99, 235, 0.2);
        }
        .ranking-num {
            font-size: 24px;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.15);
            min-width: 40px;
            text-align: center;
            font-style: italic;
            line-height: 1;
        }
        .ranking-item:nth-child(1) .ranking-num {
            color: #f59e0b;
        }
        .ranking-item:nth-child(2) .ranking-num {
            color: #94a3b8;
        }
        .ranking-item:nth-child(3) .ranking-num {
            color: #b45309;
        }
        .ranking-info {
            flex: 1;
        }
        .ranking-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .ranking-meta {
            font-size: 13px;
            color: var(--text-muted);
        }
        .ranking-heat {
            font-size: 13px;
            font-weight: 600;
            color: #f59e0b;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
            max-width: 720px;
            margin: 0 auto;
        }
        .tag-cloud .tag {
            font-size: 14px;
            padding: 8px 20px;
            background: rgba(255, 255, 255, 0.04);
        }
        .tag-cloud .tag i {
            margin-right: 6px;
            font-size: 11px;
            opacity: 0.6;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(37, 99, 235, 0.2);
        }
        .faq-item details {
            padding: 0;
        }
        .faq-item summary {
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            transition: var(--transition);
            user-select: none;
        }
        .faq-item summary:hover {
            color: #93c5fd;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 13px;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-body {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            border-top: 1px solid var(--border-color);
            padding-top: 14px;
            margin-top: 0;
        }
        .cta-section {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(6, 182, 212, 0.1)), url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 80px 0;
            text-align: center;
        }
        .cta-title {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }
        .cta-desc {
            color: var(--text-body);
            font-size: 15px;
            max-width: 480px;
            margin: 0 auto 28px;
        }
        .site-footer {
            background: rgba(11, 17, 32, 0.98);
            border-top: 1px solid var(--border-color);
        }
        .footer-link {
            display: inline-flex;
            align-items: center;
            padding: 5px 0;
            font-size: 14px;
            color: var(--text-body);
            transition: var(--transition);
        }
        .footer-link:hover {
            color: var(--accent-light);
            transform: translateX(3px);
        }
        .footer-link:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }
        @media (max-width: 768px) {
            .desktop-nav {
                display: none;
            }
            .banner-title {
                font-size: 30px;
            }
            .section-title {
                font-size: 24px;
            }
            .section-block {
                padding: 50px 0;
            }
            .timeline::before {
                left: 14px;
            }
            .timeline-item {
                padding-left: 46px;
            }
            .timeline-dot {
                left: 8px;
                width: 13px;
                height: 13px;
            }
            .page-banner {
                padding: 60px 0 40px;
            }
            .ranking-item {
                flex-wrap: wrap;
                gap: 10px 14px;
            }
            .ranking-heat {
                margin-left: auto;
            }
        }
        @media (max-width: 520px) {
            .container-page {
                padding: 0 16px;
            }
            .banner-title {
                font-size: 26px;
            }
            .banner-desc {
                font-size: 14px;
            }
            .btn-primary,
            .btn-outline {
                width: 100%;
                padding: 12px 16px;
            }
            .banner-actions {
                display: flex;
                flex-direction: column;
                gap: 10px;
            }
            .timeline-item {
                padding-left: 40px;
            }
        }
        @media (min-width: 769px) {
            .mobile-nav {
                display: none !important;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0a0f1e;
            --bg-secondary: #111a2e;
            --bg-card: rgba(255,255,255,0.05);
            --border-color: rgba(255,255,255,0.1);
            --text-primary: #e2e8f0;
            --text-secondary: #94a3b8;
            --text-muted: #64748b;
            --primary: #3b82f6;
            --primary-light: #60a5fa;
            --accent: #06b6d4;
            --radius: 1rem;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.2);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.3);
            --transition: all 0.3s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input {
            font-family: inherit;
        }
        .container-page {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 15, 30, 0.88);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            transition: box-shadow 0.3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 10px 30px rgba(0,0,0,0.35);
            background: rgba(10, 15, 30, 0.96);
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.3s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #fff;
            background: rgba(59, 130, 246, 0.15);
        }
        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(59,130,246,0.25), rgba(6,182,212,0.2));
            box-shadow: inset 0 0 0 1px rgba(59,130,246,0.3);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, #3b82f6, #06b6d4);
            box-shadow: 0 4px 16px rgba(59,130,246,0.35);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59,130,246,0.45);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(59,130,246,0.4);
        }
        .btn-primary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .hot-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(59,130,246,0.1);
            border: 1px solid rgba(59,130,246,0.2);
            color: var(--text-secondary);
            font-size: 12px;
            white-space: nowrap;
        }
        .header-search input {
            width: 220px;
            padding: 8px 36px 8px 14px;
            border-radius: 999px;
            background: rgba(255,255,255,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            color: #e2e8f0;
            font-size: 13px;
            transition: all 0.3s ease;
        }
        .header-search input::placeholder {
            color: #64748b;
        }
        .header-search input:focus {
            outline: none;
            border-color: rgba(59,130,246,0.5);
            background: rgba(59,130,246,0.1);
            box-shadow: 0 0 0 3px rgba(59,130,246,0.15);
        }
        .mobile-nav {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: rgba(10,15,30,0.98);
            border-bottom: 1px solid rgba(255,255,255,0.08);
            backdrop-filter: blur(12px);
            max-height: calc(100vh - 72px);
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: block;
        }
        .mobile-nav-link {
            display: flex;
            align-items: center;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.3s;
        }
        .mobile-nav-link:hover {
            color: #fff;
            background: rgba(255,255,255,0.05);
        }
        .mobile-nav-link.active {
            color: #fff;
            background: rgba(59,130,246,0.2);
        }
        .article-hero {
            position: relative;
            overflow: hidden;
            padding: 56px 0 64px;
            background-size: cover;
            background-position: center;
        }
        .article-hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to bottom, rgba(10,15,30,0.88) 0%, rgba(10,15,30,0.7) 40%, rgba(10,15,30,0.95) 100%);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.3s;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .article-meta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.08);
            border-radius: 999px;
            padding: 4px 14px;
        }
        .article-content {
            line-height: 1.9;
            font-size: 15px;
            color: var(--text-secondary);
        }
        .article-content h2 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin: 32px 0 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .article-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            margin: 24px 0 12px;
        }
        .article-content p {
            margin: 16px 0;
        }
        .article-content img {
            border-radius: var(--radius);
            margin: 24px 0;
            box-shadow: var(--shadow-md);
        }
        .article-content ul,
        .article-content ol {
            margin: 16px 0;
            padding-left: 24px;
        }
        .article-content ul {
            list-style: disc;
        }
        .article-content ol {
            list-style: decimal;
        }
        .article-content li {
            margin: 8px 0;
        }
        .article-content blockquote {
            border-left: 3px solid var(--accent);
            background: rgba(255,255,255,0.04);
            padding: 16px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
            margin: 24px 0;
            font-style: italic;
        }
        .article-content a {
            color: var(--accent);
            text-decoration: underline;
        }
        .article-content a:hover {
            color: var(--primary-light);
        }
        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
        }
        .article-content th,
        .article-content td {
            border: 1px solid var(--border-color);
            padding: 10px 14px;
            text-align: left;
        }
        .article-content th {
            background: rgba(255,255,255,0.05);
            color: #fff;
            font-weight: 600;
        }
        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 22px;
            transition: var(--transition);
        }
        .sidebar-card:hover {
            border-color: rgba(59,130,246,0.3);
        }
        .sidebar-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-color);
        }
        .sidebar-title i {
            color: var(--accent);
        }
        .sidebar-link {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 8px 10px;
            border-radius: 8px;
            font-size: 13px;
            line-height: 1.5;
            color: var(--text-secondary);
            transition: all 0.3s ease;
        }
        .sidebar-link:hover {
            color: #fff;
            background: rgba(255,255,255,0.05);
        }
        .sidebar-link-index {
            flex-shrink: 0;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(6,182,212,0.1);
            border-radius: 6px;
            padding: 2px 6px;
        }
        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all 0.3s ease;
            display: block;
            height: 100%;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(59,130,246,0.4);
        }
        .news-card-img {
            height: 170px;
            overflow: hidden;
        }
        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .news-card:hover .news-card-img img {
            transform: scale(1.05);
        }
        .news-card-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            line-height: 1.4;
            margin: 10px 0 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .badge {
            display: inline-block;
            padding: 4px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
            background: linear-gradient(135deg, rgba(59,130,246,0.3), rgba(6,182,212,0.3));
            color: #fff;
            border: 1px solid rgba(59,130,246,0.3);
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 12px;
            color: var(--text-secondary);
            background: rgba(255,255,255,0.05);
            border: 1px solid var(--border-color);
            transition: all 0.3s;
        }
        .tag-chip:hover {
            color: #fff;
            border-color: var(--primary);
            background: rgba(59,130,246,0.2);
        }
        .cta-section {
            position: relative;
            padding: 64px 0;
            background: linear-gradient(135deg, rgba(59,130,246,0.15), rgba(6,182,212,0.15));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 20px 24px;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(59,130,246,0.4);
        }
        .faq-item summary {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            list-style: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 22px;
            color: var(--accent);
            transition: transform 0.3s;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item p {
            margin-top: 12px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .not-found-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 60px 30px;
            text-align: center;
        }
        .not-found-card h2 {
            margin-top: 16px;
            font-size: 22px;
            color: #fff;
        }
        .not-found-card p {
            margin: 8px 0 24px;
            color: var(--text-muted);
        }
        .footer-link {
            display: inline-flex;
            align-items: center;
            font-size: 14px;
            color: var(--text-muted);
            padding: 6px 0;
            transition: all 0.3s;
        }
        .footer-link:hover {
            color: #fff;
            transform: translateX(4px);
        }
        @media (max-width: 1024px) {
            .desktop-nav {
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .desktop-nav::-webkit-scrollbar {
                display: none;
            }
        }
        @media (max-width: 768px) {
            .container-page {
                padding: 0 16px;
            }
            .article-hero {
                padding: 40px 0 48px;
            }
            .article-content {
                font-size: 14px;
            }
            .article-content h2 {
                font-size: 18px;
            }
            .article-content h3 {
                font-size: 16px;
            }
            .cta-section {
                padding: 48px 0;
            }
        }
        @media (max-width: 520px) {
            .header-search {
                display: none !important;
            }
            .hot-tag {
                display: none;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #3b82f6;
            --accent: #22d3ee;
            --dark-bg: #0a0e17;
            --card-bg: #111827;
            --border: rgba(255, 255, 255, 0.08);
            --text-main: #f1f5f9;
            --text-soft: #94a3b8;
            --radius: 16px;
            --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--dark-bg);
            color: var(--text-main);
            line-height: 1.7;
        }

        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: inherit; }
        button { border: none; outline: none; cursor: pointer; }
        input { outline: none; border: none; }

        .container-page {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 14, 23, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .header-search {
            width: 240px;
        }

        .header-search input {
            width: 100%;
            height: 40px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 0 38px 0 16px;
            font-size: 13px;
            color: #e2e8f0;
            transition: all 0.3s;
        }

        .header-search input::placeholder {
            color: #64748b;
        }

        .header-search input:focus {
            border-color: rgba(59, 130, 246, 0.5);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, #3b82f6, #06b6d4);
            color: white;
            border-radius: 10px;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 16px rgba(59, 130, 246, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(59, 130, 246, 0.45);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #e2e8f0;
            border-radius: 10px;
            font-weight: 500;
            transition: all 0.3s;
        }

        .btn-outline:hover {
            border-color: rgba(34, 211, 238, 0.6);
            background: rgba(34, 211, 238, 0.1);
            color: #22d3ee;
        }

        .desktop-nav {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: #94a3b8;
            transition: all 0.3s;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: white;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-link.active {
            color: white;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.25), rgba(6, 182, 212, 0.2));
            border: 1px solid rgba(59, 130, 246, 0.3);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.1);
        }

        .hot-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: #94a3b8;
            font-size: 12px;
            transition: all 0.3s;
        }

        .hot-tag:hover {
            border-color: rgba(34, 211, 238, 0.3);
            color: #e2e8f0;
        }

        .mobile-nav {
            display: none;
            background: #0d1322;
            border-top: 1px solid var(--border);
            padding: 12px 20px 16px;
        }

        .mobile-nav a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: 10px;
            color: #94a3b8;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s;
        }

        .mobile-nav a:hover,
        .mobile-nav a.active {
            background: rgba(59, 130, 246, 0.15);
            color: white;
        }

        /* Hero */
        .page-hero {
            position: relative;
            padding: 80px 0 64px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        .page-hero .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(10, 14, 23, 0.9) 0%, rgba(10, 14, 23, 0.7) 50%, rgba(10, 14, 23, 0.5) 100%);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 24px;
            background: rgba(59, 130, 246, 0.2);
            border: 1px solid rgba(59, 130, 246, 0.4);
            color: #93c5fd;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(8px);
        }

        .section-title {
            font-size: 32px;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(120deg, #f1f5f9, #94a3b8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-soft);
            line-height: 1.8;
        }

        /* Cards */
        .service-card {
            background: linear-gradient(145deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #3b82f6, #22d3ee);
            opacity: 0;
            transition: opacity 0.3s;
        }

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

        .service-card:hover {
            transform: translateY(-4px);
            border-color: rgba(59, 130, 246, 0.4);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
        }

        .service-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(34, 211, 238, 0.15));
            border: 1px solid rgba(59, 130, 246, 0.3);
            color: #60a5fa;
        }

        /* Stat block */
        .stat-block {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-left: 3px solid #3b82f6;
            border-radius: 12px;
            padding: 20px 24px;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: #f1f5f9;
            background: linear-gradient(135deg, #60a5fa, #22d3ee);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* Detail card */
        .detail-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            transition: all 0.3s;
        }

        .detail-card:hover {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 12px 36px rgba(0, 0, 0, 0.25);
        }

        .detail-card .cover-img {
            height: 220px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .detail-card .cover-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 14, 23, 0.7), transparent);
        }

        /* Timeline */
        .timeline-item {
            position: relative;
            padding-left: 40px;
            padding-bottom: 32px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 6px;
            width: 2px;
            height: 100%;
            background: linear-gradient(to bottom, rgba(59, 130, 246, 0.5), rgba(34, 211, 238, 0.2));
        }

        .timeline-item:last-child::before {
            display: none;
        }

        .timeline-dot {
            position: absolute;
            left: 4px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: linear-gradient(135deg, #3b82f6, #22d3ee);
            box-shadow: 0 0 14px rgba(59, 130, 246, 0.6);
        }

        /* FAQ */
        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 20px 24px;
            transition: all 0.3s;
            cursor: pointer;
        }

        .faq-item:hover {
            border-color: rgba(59, 130, 246, 0.35);
            background: rgba(59, 130, 246, 0.06);
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(34, 211, 238, 0.1)), url('/assets/images/backpic/back-3.png') center/cover;
            border: 1px solid rgba(59, 130, 246, 0.3);
            border-radius: 24px;
            padding: 56px 40px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(10, 14, 23, 0.6);
        }

        .cta-section > * {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: #070a12;
            border-top: 1px solid var(--border);
        }

        .footer-link {
            display: inline-flex;
            align-items: center;
            padding: 6px 0;
            font-size: 14px;
            color: #94a3b8;
            transition: all 0.3s;
        }

        .footer-link:hover {
            color: white;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 24px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .container-page {
                padding: 0 16px;
            }

            .section-title {
                font-size: 24px;
            }

            .page-hero {
                padding: 56px 0 40px;
            }

            .desktop-nav {
                display: none;
            }

            .mobile-nav.open {
                display: block;
            }

            .header-search {
                display: none;
            }

            .cta-section {
                padding: 36px 24px;
                border-radius: 16px;
            }

            .stat-number {
                font-size: 28px;
            }
        }

        @media (max-width: 520px) {
            .hero-badge {
                font-size: 12px;
                padding: 4px 12px;
            }

            .service-card {
                padding: 20px;
            }

            .detail-card .cover-img {
                height: 160px;
            }

            .btn-primary,
            .btn-outline {
                font-size: 14px;
                padding: 10px 20px;
            }
        }

/* roulang page: category2 */
:root{
  --bg-primary:#0b0f1a;
  --bg-secondary:#0e1524;
  --bg-card:#131c2e;
  --bg-card-hover:#1a2440;
  --border-color:rgba(255,255,255,0.08);
  --text-primary:#f1f5f9;
  --text-secondary:#94a3b8;
  --text-muted:#64748b;
  --accent-primary:#3b82f6;
  --accent-secondary:#22d3ee;
  --radius-lg:18px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-card:0 4px 24px rgba(0,0,0,0.35);
  --shadow-hover:0 12px 40px rgba(59,130,246,0.16);
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;}
img{display:block;max-width:100%;}
button,input,select{font-family:inherit;outline:none;border:none;}
input[type="search"]{-webkit-appearance:none;appearance:none;}
.container-page{max-width:1280px;margin:0 auto;padding:0 24px;}
.site-header{
  background:rgba(11,15,26,0.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border-color);
  position:sticky;top:0;z-index:100;
  box-shadow:0 4px 30px rgba(0,0,0,0.3);
}
.header-search input{
  width:220px;
  background:rgba(255,255,255,0.07);
  border:1px solid rgba(255,255,255,0.1);
  border-radius:999px;
  padding:8px 38px 8px 16px;
  font-size:13px;
  color:var(--text-primary);
  transition:all .3s ease;
}
.header-search input::placeholder{color:#64748b;}
.header-search input:focus{
  border-color:var(--accent-secondary);
  background:rgba(255,255,255,0.1);
  box-shadow:0 0 0 3px rgba(34,211,238,0.12);
  width:260px;
}
.nav-link{
  display:inline-flex;
  align-items:center;
  padding:8px 16px;
  border-radius:999px;
  font-size:14px;
  font-weight:500;
  color:var(--text-secondary);
  transition:all .25s ease;
  border:1px solid transparent;
}
.nav-link:hover{
  color:#fff;
  background:rgba(255,255,255,0.07);
}
.nav-link.active{
  color:#fff;
  background:linear-gradient(135deg,rgba(59,130,246,0.2),rgba(34,211,238,0.12));
  border-color:rgba(59,130,246,0.3);
}
.hot-tag{
  display:inline-flex;
  align-items:center;
  gap:4px;
  padding:5px 12px;
  border-radius:999px;
  background:rgba(255,255,255,0.05);
  border:1px solid rgba(255,255,255,0.08);
  color:#94a3b8;
  font-size:12px;
  white-space:nowrap;
}
.mobile-nav{
  display:none;
  background:rgba(11,15,26,0.98);
  border-top:1px solid var(--border-color);
  padding:12px 0;
}
.mobile-nav.open{display:block;}
.btn-primary{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:linear-gradient(135deg,#3b82f6,#22d3ee);
  color:#fff;
  font-weight:600;
  border-radius:999px;
  padding:10px 22px;
  font-size:14px;
  transition:all .3s ease;
  box-shadow:0 4px 18px rgba(59,130,246,0.35);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 30px rgba(59,130,246,0.45);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 2px 10px rgba(59,130,246,0.3);
}
.btn-secondary{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,0.07);
  border:1px solid rgba(255,255,255,0.15);
  color:#e2e8f0;
  font-weight:500;
  border-radius:999px;
  padding:10px 22px;
  font-size:14px;
  transition:all .3s ease;
}
.btn-secondary:hover{
  background:rgba(255,255,255,0.12);
  border-color:rgba(255,255,255,0.25);
  transform:translateY(-2px);
}
.banner-section{
  position:relative;
  overflow:hidden;
  padding:80px 0 100px;
}
.banner-section::before{
  content:'';
  position:absolute;
  inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
}
.banner-section::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(11,15,26,0.97) 0%,rgba(11,15,26,0.85) 50%,rgba(11,15,26,0.55) 100%);
}
.banner-content{position:relative;z-index:2;}
.section-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--accent-secondary);
  background:rgba(34,211,238,0.1);
  border:1px solid rgba(34,211,238,0.2);
  padding:5px 14px;
  border-radius:999px;
  margin-bottom:14px;
  letter-spacing:1px;
}
.section-title{
  font-size:30px;
  font-weight:800;
  line-height:1.3;
  margin-bottom:12px;
  background:linear-gradient(120deg,#fff,#94a3b8);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.section-desc{
  color:var(--text-secondary);
  font-size:15px;
  max-width:640px;
  line-height:1.8;
}
.tag-chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 18px;
  border-radius:999px;
  font-size:13px;
  font-weight:500;
  color:var(--text-secondary);
  background:rgba(255,255,255,0.04);
  border:1px solid var(--border-color);
  transition:all .25s ease;
  cursor:pointer;
}
.tag-chip:hover{
  color:#fff;
  background:rgba(59,130,246,0.15);
  border-color:rgba(59,130,246,0.35);
}
.tag-chip.active{
  color:#fff;
  background:linear-gradient(135deg,rgba(59,130,246,0.3),rgba(34,211,238,0.2));
  border-color:rgba(59,130,246,0.4);
}
.guide-card{
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:all .35s ease;
  box-shadow:var(--shadow-card);
}
.guide-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(59,130,246,0.3);
}
.guide-card .card-img-wrap{
  position:relative;
  overflow:hidden;
  height:190px;
}
.guide-card .card-img-wrap img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform .6s ease;
}
.guide-card:hover .card-img-wrap img{
  transform:scale(1.08);
}
.guide-card .card-img-wrap::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(11,15,26,0.6),transparent 60%);
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:4px;
  font-size:12px;
  font-weight:500;
  padding:3px 10px;
  border-radius:999px;
}
.badge-blue{
  background:rgba(59,130,246,0.15);
  color:#60a5fa;
  border:1px solid rgba(59,130,246,0.25);
}
.badge-cyan{
  background:rgba(34,211,238,0.12);
  color:#22d3ee;
  border:1px solid rgba(34,211,238,0.25);
}
.badge-orange{
  background:rgba(251,146,60,0.12);
  color:#fb923c;
  border:1px solid rgba(251,146,60,0.25);
}
.card-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:13px;
  font-weight:600;
  color:var(--accent-secondary);
  transition:gap .25s ease;
}
.card-link:hover{gap:10px;}
.process-item{
  position:relative;
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius-lg);
  padding:32px 24px 28px;
  text-align:center;
  transition:all .3s ease;
}
.process-item:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,0.3);
  box-shadow:0 8px 32px rgba(0,0,0,0.3);
}
.step-number{
  position:absolute;
  top:16px;
  right:20px;
  font-size:36px;
  font-weight:900;
  color:rgba(255,255,255,0.05);
}
.step-icon{
  width:64px;
  height:64px;
  margin:0 auto 18px;
  border-radius:20px;
  background:linear-gradient(135deg,rgba(59,130,246,0.2),rgba(34,211,238,0.12));
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:22px;
  color:var(--accent-secondary);
  border:1px solid rgba(34,211,238,0.2);
}
.ranking-item{
  display:flex;
  align-items:center;
  gap:16px;
  padding:18px 20px;
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:14px;
  margin-bottom:12px;
  transition:all .25s ease;
}
.ranking-item:hover{
  border-color:rgba(59,130,246,0.35);
  background:var(--bg-card-hover);
  transform:translateX(4px);
}
.rank-num{
  font-size:20px;
  font-weight:900;
  width:40px;
  height:40px;
  border-radius:12px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:rgba(255,255,255,0.05);
  border:1px solid var(--border-color);
  color:var(--text-secondary);
}
.rank-num.top1{background:linear-gradient(135deg,#f59e0b,#fbbf24);color:#111;border-color:transparent;}
.rank-num.top2{background:linear-gradient(135deg,#94a3b8,#64748b);color:#fff;border-color:transparent;}
.rank-num.top3{background:linear-gradient(135deg,#d97706,#b45309);color:#fff;border-color:transparent;}
.rank-progress{
  height:4px;
  background:rgba(255,255,255,0.06);
  border-radius:2px;
  overflow:hidden;
  margin-top:6px;
}
.rank-progress span{
  display:block;
  height:100%;
  border-radius:2px;
  background:linear-gradient(90deg,#3b82f6,#22d3ee);
}
.stat-card{
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:var(--radius-lg);
  padding:32px 28px;
  text-align:center;
  transition:all .3s ease;
}
.stat-card:hover{
  transform:translateY(-4px);
  border-color:rgba(34,211,238,0.25);
}
.stat-num{
  font-size:38px;
  font-weight:900;
  background:linear-gradient(135deg,#3b82f6,#22d3ee);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.faq-item{
  background:var(--bg-card);
  border:1px solid var(--border-color);
  border-radius:14px;
  margin-bottom:12px;
  transition:border-color .25s ease;
}
.faq-item summary{
  cursor:pointer;
  padding:20px 24px;
  font-size:15px;
  font-weight:600;
  color:var(--text-primary);
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  user-select:none;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:'\f078';
  font-family:'Font Awesome 6 Free';
  font-weight:900;
  font-size:13px;
  color:var(--text-muted);
  transition:transform .3s ease;
  flex-shrink:0;
}
.faq-item[open]{
  border-color:rgba(59,130,246,0.3);
}
.faq-item[open] summary::after{
  transform:rotate(180deg);
  color:var(--accent-secondary);
}
.faq-item .faq-body{
  padding:0 24px 20px;
  color:var(--text-secondary);
  font-size:14px;
  line-height:1.8;
  border-top:1px solid rgba(255,255,255,0.05);
  margin:0 24px;
  padding:16px 0 20px;
}
.cta-box{
  background:linear-gradient(135deg,rgba(59,130,246,0.12),rgba(34,211,238,0.08));
  border:1px solid rgba(59,130,246,0.2);
  border-radius:24px;
  padding:52px 40px;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-box::before{
  content:'';
  position:absolute;
  width:320px;height:320px;
  border-radius:50%;
  background:rgba(59,130,246,0.12);
  filter:blur(60px);
  top:-120px;right:-80px;
}
.site-footer{
  background:var(--bg-secondary);
  border-top:1px solid var(--border-color);
}
.footer-link{
  display:inline-flex;
  align-items:center;
  color:#64748b;
  font-size:14px;
  padding:6px 0;
  transition:all .25s ease;
}
.footer-link:hover{
  color:#22d3ee;
  transform:translateX(3px);
}
.section-padding{padding:72px 0;}
.bg-soft{background:rgba(14,21,36,0.6);}
::-webkit-scrollbar{
  width:8px;
  background:#0b0f1a;
}
::-webkit-scrollbar-thumb{
  background:rgba(255,255,255,0.15);
  border-radius:4px;
}
:focus-visible{
  outline:2px solid var(--accent-secondary);
  outline-offset:2px;
}
@media (max-width:1024px){
  .container-page{padding:0 20px;}
  .section-title{font-size:26px;}
  .nav-link{padding:7px 12px;font-size:13px;}
  .stat-num{font-size:30px;}
}
@media (max-width:768px){
  .desktop-nav{display:none;}
  .header-search{display:none;}
  .banner-section{padding:56px 0 72px;}
  .section-padding{padding:48px 0;}
  .cta-box{padding:40px 24px;}
  .section-title{font-size:22px;}
  .stat-num{font-size:26px;}
  .footer-link{font-size:13px;}
}
@media (max-width:520px){
  .container-page{padding:0 16px;}
  .banner-section h1{font-size:28px;}
  .guide-card .card-img-wrap{height:160px;}
  .process-item{padding:24px 16px 20px;}
  .ranking-item{padding:14px 14px;}
  .faq-item summary{font-size:14px;padding:16px 18px;}
  .faq-item .faq-body{padding:12px 0 16px;margin:0 18px;font-size:13px;}
}