/* roulang page: index */
:root {
            --primary: #1e2540;
            --primary-light: #2a3156;
            --primary-dark: #13182b;
            --accent: #f0a500;
            --accent-strong: #d18e00;
            --accent-soft: #fff7e5;
            --bg: #f5f7fb;
            --bg-light: #ffffff;
            --bg-dark: #13182b;
            --text: #1a2030;
            --text-light: #6c7a8f;
            --text-muted: #8e99ad;
            --border: #e8ebf3;
            --border-dark: #2c3350;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 30px rgba(20, 24, 48, 0.07);
            --shadow-hover: 0 14px 45px rgba(20, 24, 48, 0.12);
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --space-section: 90px;
            --header-height: 74px;
        }

        *,
        *::before,
        *::after {
            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", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

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

        .section-title {
            font-size: 2.1rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            margin-bottom: 8px;
            color: var(--text);
        }

        .section-subtitle {
            color: var(--text-light);
            font-size: 1.05rem;
            max-width: 640px;
            line-height: 1.7;
        }

        .section-head {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-head .section-subtitle {
            margin: 0 auto;
        }

        .eyebrow {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--accent);
            background: var(--accent-soft);
            padding: 6px 16px;
            border-radius: 30px;
            margin-bottom: 14px;
        }

        /* 按钮 */
        .btn-brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent), #ffbe3d);
            color: #1a2030;
            font-weight: 700;
            font-size: 1rem;
            padding: 12px 32px;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(240, 165, 0, 0.3);
        }

        .btn-brand:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(240, 165, 0, 0.4);
            color: #1a2030;
            background: linear-gradient(135deg, #ffb800, #ffcd5a);
        }

        .btn-brand:active {
            transform: translateY(0);
            box-shadow: 0 4px 14px rgba(240, 165, 0, 0.3);
        }

        .btn-dark-brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--primary);
            color: #ffffff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 11px 28px;
            border-radius: 50px;
            border: none;
            transition: var(--transition);
        }

        .btn-dark-brand:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(30, 37, 64, 0.25);
            color: #ffffff;
        }

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: #ffffff;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 11px 28px;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: var(--transition);
        }

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

        /* 导航 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.03);
        }

        .main-navbar {
            padding-top: 0;
            padding-bottom: 0;
            min-height: var(--header-height);
            gap: 20px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--accent), #ffbe3d);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #1a2030;
            box-shadow: 0 4px 15px rgba(240, 165, 0, 0.3);
        }

        .brand-text {
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: -0.01em;
            color: var(--text);
            white-space: nowrap;
        }

        .search-form {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: 50px;
            padding: 4px 6px 4px 18px;
            max-width: 460px;
            width: 100%;
            transition: var(--transition);
        }

        .search-form:focus-within {
            border-color: var(--accent);
            background: #ffffff;
            box-shadow: 0 0 0 4px rgba(240, 165, 0, 0.12);
        }

        .search-icon {
            color: var(--text-light);
            font-size: 15px;
            margin-right: 10px;
        }

        .search-input {
            flex: 1;
            background: transparent;
            border: none;
            padding: 9px 0;
            font-size: 0.95rem;
            color: var(--text);
            min-width: 0;
        }

        .search-input::placeholder {
            color: var(--text-muted);
        }

        .search-btn {
            background: var(--primary);
            color: #ffffff;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 8px 22px;
            border-radius: 50px;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .search-btn:hover {
            background: var(--accent);
            color: #1a2030;
        }

        .nav-menu {
            gap: 6px;
            margin-left: auto;
            flex-wrap: nowrap;
        }

        .nav-menu .nav-link {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-light);
            padding: 8px 18px;
            border-radius: 50px;
            transition: var(--transition);
        }

        .nav-menu .nav-link:hover {
            color: var(--text);
            background: var(--bg);
        }

        .nav-menu .nav-link.active {
            color: var(--primary);
            background: var(--accent-soft);
            font-weight: 700;
        }

        .mobile-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1.5px solid var(--border);
            border-radius: 50px;
            padding: 4px 6px 4px 16px;
            margin: 14px 0 16px;
            transition: var(--transition);
        }

        .mobile-search:focus-within {
            border-color: var(--accent);
            background: #ffffff;
            box-shadow: 0 0 0 4px rgba(240, 165, 0, 0.1);
        }

        .mobile-search .search-icon {
            font-size: 14px;
        }

        .mobile-search input {
            flex: 1;
            padding: 8px 0;
            font-size: 0.9rem;
            background: transparent;
            border: none;
            min-width: 0;
        }

        .mobile-search input::placeholder {
            color: var(--text-muted);
        }

        .mobile-search .search-btn {
            padding: 6px 18px;
        }

        .navbar-toggler {
            border: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 6px 12px;
            border-radius: 10px;
            background: var(--bg);
        }

        .navbar-toggler:focus {
            box-shadow: none;
            border: none;
        }

        @media (min-width: 992px) {
            .navbar-expand-lg .navbar-collapse {
                display: flex;
                flex: 1;
                align-items: center;
                gap: 24px;
            }

            .desktop-search {
                margin-left: 24px;
                margin-right: auto;
            }

            .nav-menu {
                margin-left: auto;
            }
        }

        @media (max-width: 991.98px) {
            .site-header {
                position: sticky;
            }

            .main-navbar {
                min-height: 64px;
            }

            .navbar-collapse {
                padding-top: 10px;
                padding-bottom: 10px;
            }

            .desktop-search {
                display: none !important;
            }

            .nav-menu {
                gap: 10px;
                padding: 8px 0;
            }

            .nav-menu .nav-link {
                font-size: 1rem;
                padding: 10px 20px;
                display: block;
            }
        }

        /* Hero */
        .hero {
            position: relative;
            background: linear-gradient(135deg, rgba(19, 24, 43, 0.94), rgba(30, 37, 64, 0.82)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 100px 0 80px;
            color: #ffffff;
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }

        .hero-content {
            text-align: center;
            max-width: 860px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 600;
            color: #e0e5f0;
            margin-bottom: 22px;
            backdrop-filter: blur(10px);
        }

        .hero-badge i {
            color: var(--accent);
        }

        .hero h1 {
            font-size: 3.4rem;
            font-weight: 900;
            letter-spacing: -0.03em;
            line-height: 1.15;
            margin-bottom: 12px;
            background: linear-gradient(120deg, #ffffff 40%, #ffd88a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.5rem;
            font-weight: 600;
            color: #dce0ef;
            margin-bottom: 16px;
        }

        .hero-desc {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            max-width: 680px;
            margin: 0 auto 30px;
            line-height: 1.75;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
            margin-bottom: 56px;
        }

        .hero-buttons .btn-brand {
            font-size: 1.05rem;
            padding: 14px 40px;
        }

        .hero-buttons .btn-outline-light-custom {
            font-size: 1.05rem;
            padding: 14px 40px;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            max-width: 1000px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 30px 36px;
            backdrop-filter: blur(12px);
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat-num {
            font-size: 2.1rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            display: block;
        }

        .hero-stat-label {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero {
                padding: 80px 0 60px;
            }

            .hero h1 {
                font-size: 2.3rem;
            }

            .hero-subtitle {
                font-size: 1.15rem;
            }

            .hero-desc {
                font-size: 0.95rem;
            }

            .hero-stats {
                grid-template-columns: repeat(2, 1fr);
                padding: 24px 20px;
                gap: 20px;
            }

            .hero-stat-num {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }

            .hero-subtitle {
                font-size: 1rem;
            }

            .hero-buttons .btn-brand,
            .hero-buttons .btn-outline-light-custom {
                font-size: 0.95rem;
                padding: 12px 28px;
            }
        }

        /* 平台优势 */
        .features-section {
            background: var(--bg);
        }

        .feature-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 32px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), #ffbe3d);
            opacity: 0;
            transition: var(--transition);
        }

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

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

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 20px;
            background: var(--accent-soft);
            color: var(--accent-strong);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* 热门玩法 */
        .games-section {
            background: var(--bg-light);
        }

        .game-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: var(--bg-light);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: block;
            height: 100%;
        }

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

        .game-card-img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            border-radius: 0;
            overflow: hidden;
        }

        .game-card-img-wrapper {
            position: relative;
            overflow: hidden;
            border-radius: 0;
        }

        .game-card-img-wrapper::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to top, rgba(19, 24, 43, 0.3), transparent);
            opacity: 0;
            transition: var(--transition);
        }

        .game-card:hover .game-card-img-wrapper::after {
            opacity: 1;
        }

        .game-card-body {
            padding: 24px 22px;
        }

        .game-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .game-card-body p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 12px;
            line-height: 1.65;
        }

        .game-card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--accent-soft);
            color: var(--accent-strong);
            padding: 4px 14px;
            border-radius: 30px;
        }

        /* 数据统计 */
        .stats-section {
            position: relative;
            background: linear-gradient(135deg, rgba(19, 24, 43, 0.94), rgba(30, 37, 64, 0.88)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: #ffffff;
            padding: 80px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .stat-block {
            text-align: center;
            padding: 20px;
            border-radius: var(--radius);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(8px);
        }

        .stat-num {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--accent);
            line-height: 1.1;
            display: block;
        }

        .stat-desc {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-num {
                font-size: 1.9rem;
            }
        }

        /* 最新资讯 */
        .news-section {
            background: var(--bg);
        }

        .news-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 26px 28px;
            margin-bottom: 16px;
            transition: var(--transition);
            display: block;
        }

        .news-card:hover {
            transform: translateX(6px);
            box-shadow: var(--shadow);
            border-color: var(--accent);
        }

        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
            flex-wrap: wrap;
        }

        .news-date {
            font-size: 0.82rem;
            color: var(--text-muted);
            font-weight: 500;
        }

        .news-category {
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--accent-soft);
            color: var(--accent-strong);
            padding: 3px 12px;
            border-radius: 30px;
        }

        .news-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            line-height: 1.45;
        }

        .news-card p {
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 0;
            line-height: 1.65;
        }

        .empty-tip {
            text-align: center;
            color: var(--text-muted);
            padding: 50px 20px;
            background: var(--bg-light);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
        }

        .news-sidebar {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            height: 100%;
        }

        .news-sidebar .sidebar-title {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--accent);
            display: inline-block;
        }

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

        .sidebar-list li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

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

        .sidebar-list a {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 0.9rem;
            color: var(--text);
            font-weight: 500;
            line-height: 1.5;
        }

        .sidebar-list a:hover {
            color: var(--accent-strong);
        }

        .sidebar-list .side-dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            margin-top: 8px;
            flex-shrink: 0;
        }

        /* 推荐内容 */
        .recommend-section {
            background: var(--bg-light);
        }

        .recommend-card {
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            background: var(--bg-light);
            transition: var(--transition);
            display: block;
            height: 100%;
        }

        .recommend-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .recommend-card img {
            width: 100%;
            height: 210px;
            object-fit: cover;
            border-radius: 0;
        }

        .recommend-card-body {
            padding: 24px;
        }

        .recommend-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.45;
        }

        .recommend-card-body p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 10px;
            line-height: 1.65;
        }

        .recommend-excerpt {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 6px;
        }

        .recommend-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent-strong);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* 使用流程 */
        .process-section {
            background: var(--bg);
        }

        .process-step {
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }

        .step-number {
            width: 56px;
            height: 56px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--accent), #ffbe3d);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #1a2030;
            box-shadow: 0 6px 20px rgba(240, 165, 0, 0.3);
        }

        .process-step h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .process-step p {
            color: var(--text-light);
            font-size: 0.92rem;
            max-width: 220px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .process-arrow {
            position: absolute;
            top: 45px;
            right: -14px;
            font-size: 20px;
            color: var(--accent);
            z-index: 2;
        }

        @media (max-width: 768px) {
            .process-arrow {
                display: none;
            }

            .process-step {
                padding: 20px 10px;
            }
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-light);
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-sm) !important;
            margin-bottom: 14px;
            overflow: hidden;
            background: var(--bg-light);
            box-shadow: none;
        }

        .faq-accordion .accordion-button {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text);
            background: var(--bg-light);
            padding: 20px 26px;
            box-shadow: none;
            border: none;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--accent-soft);
            color: var(--text);
            box-shadow: none;
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            border: none;
        }

        .faq-accordion .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23f0a500'%3E%3Cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3E%3C/svg%3E");
            transition: transform 0.3s ease;
        }

        .faq-accordion .accordion-body {
            padding: 0 26px 22px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.75;
            border-top: 1px solid var(--border);
        }

        /* CTA */
        .cta-section {
            background: var(--bg);
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(19, 24, 43, 0.95), rgba(42, 49, 86, 0.9)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 70px 50px;
            text-align: center;
            color: #ffffff;
            position: relative;
            overflow: hidden;
        }

        .cta-box h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-box p {
            font-size: 1.05rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 600px;
            margin: 0 auto 32px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-box {
                padding: 50px 24px;
                border-radius: var(--radius);
            }

            .cta-box h2 {
                font-size: 1.5rem;
            }
        }

        /* 页脚 */
        .site-footer {
            background: var(--bg-dark);
            color: #a0a8bd;
            padding: 60px 0 0;
        }

        .footer-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            font-size: 16px;
        }

        .footer-brand .brand-text {
            color: #ffffff;
            font-size: 1.2rem;
        }

        .footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: #7a84a0;
            max-width: 300px;
        }

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

        .footer-list li {
            margin-bottom: 10px;
        }

        .footer-list a {
            color: #a0a8bd;
            font-size: 0.9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .footer-list a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

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

        .footer-contact li {
            font-size: 0.9rem;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-contact i {
            color: var(--accent);
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            margin-top: 50px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 0.85rem;
            color: #7a84a0;
        }

        .footer-bottom a {
            color: #a0a8bd;
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        @media (max-width: 768px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .footer-row {
                row-gap: 30px;
            }
        }

        /* 通用辅助 */
        .text-accent {
            color: var(--accent) !important;
        }

        .divider-dash {
            width: 48px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), #ffbe3d);
            border-radius: 2px;
            margin: 0 auto 16px;
        }

        .section-divider {
            border: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border), transparent);
        }

/* roulang page: article */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #dbeafe;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --dark: #0f172a;
            --dark-light: #1e293b;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-lg: 22px;
            --shadow: 0 4px 20px rgba(15, 23, 42, .08);
            --shadow-lg: 0 12px 40px rgba(15, 23, 42, .12);
            --transition: all .3s cubic-bezier(.4,0,.2,1);
        }
        * , *::before, *::after { 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: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; }
        a:hover { color: inherit; }
        button { border: none; background: none; cursor: pointer; }
        input, button, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
        .container { max-width: 1200px; padding-left: 20px; padding-right: 20px; }

        /* ========== HEADER ========== */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 12px rgba(15, 23, 42, .04);
        }
        .main-navbar {
            padding: 14px 0;
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-right: 20px;
            text-decoration: none;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), #4f46e5);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            box-shadow: 0 4px 14px rgba(37, 99, 235, .3);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 8px 12px;
            color: var(--dark);
            font-size: 18px;
            transition: var(--transition);
        }
        .navbar-toggler:hover { border-color: var(--primary); color: var(--primary); }
        .navbar-toggler:focus { box-shadow: none; }

        .search-form {
            position: relative;
            display: flex;
            align-items: center;
            flex: 1;
            max-width: 420px;
            margin: 0 auto;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 4px 4px 4px 16px;
            transition: var(--transition);
        }
        .search-form:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .1);
            background: var(--surface);
        }
        .search-icon {
            color: var(--text-muted);
            font-size: 14px;
            margin-right: 8px;
        }
        .search-input {
            border: none;
            background: transparent;
            padding: 8px 0;
            flex: 1;
            font-size: 14px;
            color: var(--text);
            min-width: 0;
        }
        .search-input::placeholder { color: #94a3b8; }
        .search-btn {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 8px 22px;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            white-space: nowrap;
        }
        .search-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }
        .nav-menu .nav-link {
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text);
            padding: 9px 16px;
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
        }
        .nav-menu .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-menu .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 700;
        }
        .nav-menu .nav-link::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-menu .nav-link.active::after { width: 20px; }
        .mobile-search {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 50px;
            padding: 6px 6px 6px 14px;
            margin: 0 0 14px;
            transition: var(--transition);
        }
        .mobile-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(37, 99, 235, .1);
        }
        .mobile-search input {
            border: none;
            background: transparent;
            flex: 1;
            font-size: 14px;
            padding: 8px 0;
            min-width: 0;
        }
        .mobile-search .search-btn {
            padding: 7px 18px;
            font-size: 13px;
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb-bar {
            padding: 24px 0 0;
            margin-bottom: 0;
        }
        .breadcrumb-bar .breadcrumb {
            margin: 0;
            font-size: 13.5px;
        }
        .breadcrumb-bar .breadcrumb-item a {
            color: var(--text-muted);
            transition: var(--transition);
        }
        .breadcrumb-bar .breadcrumb-item a:hover { color: var(--primary); }
        .breadcrumb-bar .breadcrumb-item.active { color: var(--text); font-weight: 600; }
        .breadcrumb-bar .breadcrumb-item + .breadcrumb-item::before {
            content: '·';
            color: #cbd5e1;
        }

        /* ========== ARTICLE HERO ========== */
        .article-hero {
            position: relative;
            padding: 56px 0 64px;
            background: linear-gradient(135deg, rgba(15, 23, 42, .92), rgba(30, 58, 138, .85)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .article-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(255, 255, 255, .08), transparent 70%);
            pointer-events: none;
        }
        .article-hero .container { position: relative; z-index: 2; }
        .article-hero .breadcrumb {
            margin-bottom: 22px;
            font-size: 13.5px;
        }
        .article-hero .breadcrumb-item a { color: #93c5fd; }
        .article-hero .breadcrumb-item a:hover { color: #fff; }
        .article-hero .breadcrumb-item.active { color: #e2e8f0; }
        .article-hero .breadcrumb-item + .breadcrumb-item::before { color: #64748b; }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .25);
            color: #fbbf24;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 18px;
            backdrop-filter: blur(4px);
        }
        .article-hero h1 {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.25;
            max-width: 780px;
            margin-bottom: 24px;
            letter-spacing: .5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, .2);
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 13.5px;
            color: #b0bec5;
        }
        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .article-meta-item i { color: #fbbf24; }
        .article-meta-item span { color: #cbd5e1; }

        /* ========== ARTICLE BODY ========== */
        .article-body-section {
            padding: 48px 0 64px;
            background: var(--bg);
        }
        .article-main {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 40px;
            margin-bottom: 32px;
        }
        .article-cover {
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 32px;
            position: relative;
        }
        .article-cover img {
            width: 100%;
            height: auto;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .article-cover:hover img { transform: scale(1.02); }
        .article-cover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, rgba(0, 0, 0, .15), transparent);
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: #334155;
        }
        .article-content h2,
        .article-content h3,
        .article-content h4 {
            color: var(--dark);
            font-weight: 700;
            margin-top: 2rem;
            margin-bottom: 1rem;
            line-height: 1.4;
        }
        .article-content h2 {
            font-size: 1.55rem;
            padding-left: 14px;
            border-left: 4px solid var(--primary);
        }
        .article-content h3 { font-size: 1.3rem; }
        .article-content h4 { font-size: 1.1rem; }
        .article-content p { margin-bottom: 1.3rem; }
        .article-content ul,
        .article-content ol {
            margin-bottom: 1.3rem;
            padding-left: 1.6rem;
        }
        .article-content li { margin-bottom: .5rem; }
        .article-content blockquote {
            background: #f8fafc;
            border-left: 4px solid var(--accent);
            padding: 1.2rem 1.4rem;
            border-radius: 8px;
            margin: 1.6rem 0;
            font-style: italic;
            color: #475569;
            position: relative;
        }
        .article-content blockquote::before {
            content: '\201C';
            font-size: 2.4rem;
            color: var(--accent);
            position: absolute;
            top: 8px;
            left: 12px;
            opacity: .5;
        }
        .article-content img {
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            margin: 1.5rem 0;
        }
        .article-content a {
            color: var(--primary);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 3px;
            transition: var(--transition);
        }
        .article-content a:hover { color: var(--primary-dark); }

        .article-footer {
            border-top: 1px solid var(--border);
            margin-top: 36px;
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: #f1f5f9;
            color: #475569;
            font-size: 13px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 50px;
            transition: var(--transition);
        }
        .tag-item:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: var(--text-muted);
            background: #f1f5f9;
            transition: var(--transition);
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(37, 99, 235, .25);
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }
        .article-not-found i {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .article-not-found h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        /* ========== SIDEBAR ========== */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-widget {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 28px;
        }
        .sidebar-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
            position: relative;
            padding-bottom: 12px;
        }
        .sidebar-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 36px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .sidebar-title i {
            color: var(--primary);
            font-size: 15px;
        }
        .widget-post-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .widget-post-item {
            display: flex;
            gap: 12px;
            align-items: center;
            padding: 10px;
            border-radius: 10px;
            transition: var(--transition);
        }
        .widget-post-item:hover {
            background: #f8fafc;
            transform: translateX(3px);
        }
        .widget-post-thumb {
            width: 64px;
            height: 48px;
            border-radius: 8px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .widget-post-info { flex: 1; min-width: 0; }
        .widget-post-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 4px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .widget-post-meta {
            font-size: 12px;
            color: var(--text-muted);
        }
        .widget-cat-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .widget-cat-list li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            transition: var(--transition);
        }
        .widget-cat-list li a:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateX(3px);
        }
        .widget-cat-list li a i {
            color: var(--primary);
            font-size: 13px;
            width: 18px;
        }
        .widget-cta {
            background: linear-gradient(135deg, var(--dark), #312e81);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }
        .widget-cta::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 90px;
            height: 90px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
        }
        .widget-cta i {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 12px;
        }
        .widget-cta h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .widget-cta p {
            font-size: 13.5px;
            color: #a5b4fc;
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .widget-cta .btn {
            background: var(--accent);
            color: var(--dark);
            border-radius: 50px;
            padding: 9px 22px;
            font-size: 14px;
            font-weight: 700;
            border: none;
            transition: var(--transition);
        }
        .widget-cta .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(245, 158, 11, .35);
        }

        /* ========== RELATED ========== */
        .related-section {
            padding: 64px 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header .subtitle {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 8px;
            display: block;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--dark);
            margin: 0;
        }
        .related-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .related-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            height: 180px;
        }
        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .related-card:hover .card-img-wrap img { transform: scale(1.06); }
        .card-img-wrap::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 50px;
            background: linear-gradient(to top, rgba(0, 0, 0, .3), transparent);
        }
        .related-card .card-body {
            padding: 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card .card-badge {
            font-size: 11.5px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 50px;
            display: inline-block;
            width: fit-content;
            margin-bottom: 10px;
        }
        .related-card h5 {
            font-size: 15.5px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.45;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-text {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-meta {
            font-size: 12.5px;
            color: #94a3b8;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: 72px 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .94), rgba(37, 99, 235, .88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 200px;
            background: radial-gradient(ellipse, rgba(255, 255, 255, .06), transparent 70%);
        }
        .cta-section .container { position: relative; z-index: 2; }
        .cta-content h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 14px;
        }
        .cta-content p {
            font-size: 16px;
            color: #bfdbfe;
            max-width: 560px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        .cta-buttons {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .btn-cta-primary {
            background: var(--accent);
            color: var(--dark);
            border: none;
            border-radius: 50px;
            padding: 13px 32px;
            font-size: 15px;
            font-weight: 700;
            transition: var(--transition);
            box-shadow: 0 4px 16px rgba(245, 158, 11, .3);
        }
        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, .45);
        }
        .btn-cta-secondary {
            background: rgba(255, 255, 255, .1);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .4);
            border-radius: 50px;
            padding: 13px 32px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            backdrop-filter: blur(4px);
        }
        .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, .2);
            transform: translateY(-3px);
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 72px 0;
            background: var(--bg);
        }
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 23, 42, .06);
        }
        .faq-header {
            width: 100%;
            padding: 20px 24px;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            text-align: left;
            transition: var(--transition);
            background: transparent;
        }
        .faq-header i {
            font-size: 14px;
            color: var(--primary);
            transition: transform .3s ease;
            flex-shrink: 0;
        }
        .faq-header[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-collapse {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-collapse.show {
            max-height: 500px;
        }
        .faq-body {
            padding: 0 24px 22px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            margin-top: 0;
            padding-top: 16px;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 56px 0 0;
            font-size: 14px;
        }
        .footer-row { padding-bottom: 32px; }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            width: 36px;
            height: 36px;
            font-size: 15px;
        }
        .footer-brand .brand-text {
            color: #fff;
            font-size: 19px;
            font-weight: 800;
        }
        .footer-desc {
            font-size: 13.5px;
            line-height: 1.8;
            color: #64748b;
            max-width: 300px;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 26px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-list a {
            color: #64748b;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-list a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-list a i {
            font-size: 12px;
            color: var(--accent);
            transition: var(--transition);
        }
        .footer-contact {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #64748b;
            font-size: 13.5px;
        }
        .footer-contact li i {
            color: var(--accent);
            font-size: 14px;
            width: 18px;
        }
        .footer-bottom {
            border-top: 1px solid #1e293b;
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #475569;
        }
        .footer-bottom p { margin: 0; }
        .footer-bottom a {
            color: #64748b;
            transition: var(--transition);
        }
        .footer-bottom a:hover { color: #fff; }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 991.98px) {
            .main-navbar { flex-wrap: wrap; }
            .search-form.desktop-search { display: none; }
            .nav-menu {
                margin-left: 0;
                padding-top: 12px;
                width: 100%;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 4px;
            }
            .nav-menu .nav-link { font-size: 14px; padding: 8px 14px; }
            .mobile-search { display: flex !important; }
        }
        @media (min-width: 992px) {
            .mobile-search { display: none !important; }
        }
        @media (max-width: 767.98px) {
            .article-hero { padding: 40px 0 48px; }
            .article-hero h1 { font-size: 1.8rem; }
            .article-main { padding: 24px 18px; }
            .article-meta { gap: 12px; font-size: 12.5px; }
            .related-section { padding: 48px 0; }
            .section-header h2 { font-size: 1.6rem; }
            .cta-section { padding: 52px 0; }
            .cta-content h2 { font-size: 1.5rem; }
            .faq-section { padding: 48px 0; }
            .site-footer { padding-top: 40px; }
        }
        @media (max-width: 520px) {
            .container { padding-left: 14px; padding-right: 14px; }
            .brand-text { font-size: 17px; }
            .brand-icon { width: 34px; height: 34px; font-size: 15px; }
            .article-hero h1 { font-size: 1.5rem; }
            .article-main { padding: 20px 14px; border-radius: 16px; }
            .article-cover { margin-bottom: 20px; }
            .article-footer { flex-direction: column; align-items: flex-start; }
            .related-card .card-img-wrap { height: 150px; }
            .footer-bottom { font-size: 12px; }
        }

/* roulang page: category1 */
:root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --primary-light: #e8f0ff;
            --accent: #06b6d4;
            --accent-2: #fbbf24;
            --dark: #0b1120;
            --dark-2: #131d34;
            --bg: #f5f7fb;
            --bg-white: #ffffff;
            --text: #0f172a;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 18px;
            --radius-sm: 12px;
            --radius-pill: 999px;
            --shadow: 0 10px 30px rgba(2, 12, 27, 0.08);
            --shadow-lg: 0 18px 50px rgba(2, 12, 27, 0.14);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1240px;
        }

        .section {
            padding: 96px 0;
        }

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 7px 18px;
            border-radius: var(--radius-pill);
            margin-bottom: 18px;
            letter-spacing: 0.3px;
        }
        .section-tag i {
            font-size: 12px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.6px;
        }

        .section-desc {
            color: var(--text-weak);
            font-size: 16px;
            line-height: 1.8;
        }

        .section-head {
            margin-bottom: 48px;
        }
        .section-head.text-center .section-desc {
            margin: 0 auto;
        }

        .link-more {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 700;
            color: var(--primary);
            margin-top: 20px;
        }
        .link-more:hover {
            color: var(--primary-dark);
            gap: 12px;
        }

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

        .btn-custom {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-pill) !important;
            padding: 12px 30px;
            font-weight: 600;
            font-size: 15px;
            border: 2px solid transparent;
            transition: var(--transition) !important;
            letter-spacing: 0.3px;
        }
        .btn-custom:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .btn-lg {
            padding: 15px 38px;
            font-size: 16px;
        }

        .btn-primary {
            --bs-btn-bg: var(--primary);
            --bs-btn-border-color: var(--primary);
            --bs-btn-hover-bg: var(--primary-dark);
            --bs-btn-hover-border-color: var(--primary-dark);
            --bs-btn-active-bg: var(--primary-dark);
            --bs-btn-active-border-color: var(--primary-dark);
        }

        .btn-outline-primary {
            --bs-btn-color: var(--primary);
            --bs-btn-border-color: var(--primary);
            --bs-btn-hover-bg: var(--primary);
            --bs-btn-hover-border-color: var(--primary);
            --bs-btn-hover-color: #fff;
            --bs-btn-active-bg: var(--primary);
            --bs-btn-active-border-color: var(--primary);
            --bs-btn-active-color: #fff;
        }

        .btn-outline-light {
            --bs-btn-color: #fff;
            --bs-btn-border-color: rgba(255, 255, 255, 0.7);
            --bs-btn-hover-bg: #fff;
            --bs-btn-hover-border-color: #fff;
            --bs-btn-hover-color: var(--dark);
            --bs-btn-active-bg: #fff;
            --bs-btn-active-border-color: #fff;
            --bs-btn-active-color: var(--dark);
        }

        .btn-accent {
            --bs-btn-bg: var(--accent-2);
            --bs-btn-border-color: var(--accent-2);
            --bs-btn-color: var(--dark);
            --bs-btn-hover-bg: #fcd34d;
            --bs-btn-hover-border-color: #fcd34d;
            --bs-btn-hover-color: var(--dark);
            --bs-btn-active-bg: #fcd34d;
            --bs-btn-active-border-color: #fcd34d;
            --bs-btn-active-color: var(--dark);
        }

        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 16px rgba(2, 12, 27, 0.06);
        }

        .main-navbar {
            padding: 14px 0;
        }

        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text) !important;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }
        .brand-logo:hover {
            color: var(--primary) !important;
        }

        .brand-icon {
            width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            color: #fff;
            font-size: 18px;
            box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
            flex-shrink: 0;
        }

        .brand-text {
            line-height: 1.2;
        }

        .search-form {
            flex: 1;
            max-width: 480px;
            margin: 0 32px;
            position: relative;
        }
        .search-form .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-weak);
            font-size: 14px;
            z-index: 1;
        }
        .search-input {
            width: 100%;
            height: 46px;
            border: 2px solid var(--border);
            border-radius: var(--radius-pill);
            padding: 0 96px 0 42px;
            font-size: 14px;
            background: var(--bg);
            color: var(--text);
            transition: var(--transition);
        }
        .search-input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }
        .search-btn {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            height: 34px;
            padding: 0 18px;
            border: none;
            border-radius: var(--radius-pill);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            z-index: 1;
        }
        .search-btn:hover {
            background: var(--primary-dark);
        }

        .nav-menu {
            gap: 4px;
            margin-left: auto;
        }

        .nav-link {
            font-weight: 600;
            font-size: 15px;
            padding: 9px 18px !important;
            border-radius: var(--radius-pill);
            color: var(--text) !important;
        }
        .nav-link:hover {
            color: var(--primary) !important;
            background: var(--primary-light);
        }
        .nav-link.active {
            background: var(--primary) !important;
            color: #fff !important;
            box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
        }

        .navbar-toggler {
            border: none;
            padding: 8px 12px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }

        .mobile-search {
            display: flex;
            align-items: center;
            gap: 8px;
            margin: 0 0 18px;
            position: relative;
        }
        .mobile-search .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-weak);
            font-size: 14px;
            z-index: 1;
        }
        .mobile-search input[type="search"] {
            width: 100%;
            height: 46px;
            border: 2px solid var(--border);
            border-radius: var(--radius-pill);
            padding: 0 90px 0 42px;
            font-size: 14px;
            background: var(--bg);
            transition: var(--transition);
        }
        .mobile-search input[type="search"]:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
        }
        .mobile-search .search-btn {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            height: 34px;
            padding: 0 16px;
            border: none;
            border-radius: var(--radius-pill);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
            z-index: 1;
        }
        .mobile-search .search-btn:hover {
            background: var(--primary-dark);
        }

        .page-hero {
            position: relative;
            padding: 110px 0;
            background-size: cover;
            background-position: center;
            color: #fff;
        }
        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(96deg, rgba(2, 6, 23, 0.88) 0%, rgba(2, 6, 23, 0.62) 45%, rgba(2, 6, 23, 0.35) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
        }

        .hero-breadcrumb {
            margin-bottom: 28px;
        }
        .hero-breadcrumb .breadcrumb {
            margin: 0;
        }
        .hero-breadcrumb .breadcrumb-item a {
            color: rgba(255, 255, 255, 0.7);
        }
        .hero-breadcrumb .breadcrumb-item a:hover {
            color: #fff;
        }
        .hero-breadcrumb .breadcrumb-item.active {
            color: var(--accent-2);
        }
        .hero-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
            content: "›";
            color: rgba(255, 255, 255, 0.5);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
            letter-spacing: 0.5px;
        }

        .hero-content h1 {
            font-size: 54px;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 16px;
        }
        .hero-content .lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 620px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .intro-stats {
            background: var(--bg);
        }

        .stat-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            height: 100%;
        }
        .stat-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        .stat-value {
            font-size: 42px;
            font-weight: 900;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
            letter-spacing: -1px;
        }
        .stat-label {
            color: var(--text-weak);
            font-size: 14px;
            font-weight: 600;
        }

        .category-cards {
            background: var(--bg-white);
        }

        .cat-card {
            display: block;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            background: #fff;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            height: 100%;
        }
        .cat-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .cat-img-wrap {
            position: relative;
            height: 180px;
            overflow: hidden;
        }
        .cat-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .cat-card:hover .cat-img-wrap img {
            transform: scale(1.08);
        }
        .cat-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(2, 6, 23, 0.5));
            display: flex;
            align-items: flex-end;
            justify-content: flex-end;
            padding: 16px;
            opacity: 0;
            transition: var(--transition);
        }
        .cat-card:hover .cat-overlay {
            opacity: 1;
        }
        .cat-overlay i {
            width: 40px;
            height: 40px;
            background: #fff;
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 14px;
        }
        .cat-body {
            padding: 24px;
        }
        .cat-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cat-body p {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .cat-count {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: var(--radius-pill);
            padding: 4px 12px;
        }

        .article-list-section {
            background: var(--bg);
        }

        .guide-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .guide-img-wrap {
            position: relative;
            height: 220px;
            overflow: hidden;
        }
        .guide-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .guide-img-wrap img {
            transform: scale(1.05);
        }
        .guide-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(2, 6, 23, 0.72);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: var(--radius-pill);
        }
        .guide-body {
            padding: 26px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .guide-title {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .guide-title a:hover {
            color: var(--primary);
        }
        .guide-desc {
            color: var(--text-weak);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }
        .guide-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--text-weak);
            font-size: 13px;
            border-top: 1px solid var(--border);
            padding-top: 16px;
        }
        .guide-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .guide-meta i {
            color: var(--primary);
        }

        .steps-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .steps-section .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
        }
        .steps-section .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        .step-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius);
            padding: 30px;
            height: 100%;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .step-card:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-6px);
            border-color: rgba(255, 255, 255, 0.2);
        }
        .step-num {
            font-size: 44px;
            font-weight: 900;
            color: var(--accent-2);
            line-height: 1;
            margin-bottom: 18px;
            display: block;
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .step-card p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        .ranking-section {
            background: var(--bg-white);
            position: relative;
        }

        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 18px 24px;
            transition: var(--transition);
        }
        .rank-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow);
            transform: translateX(6px);
        }
        .rank-num {
            font-size: 28px;
            font-weight: 900;
            color: var(--primary);
            min-width: 48px;
            text-align: center;
        }
        .rank-info {
            flex: 1;
        }
        .rank-info h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .rank-info .progress {
            height: 8px;
            background: #e9edf4;
            border-radius: var(--radius-pill);
            overflow: hidden;
        }
        .rank-info .progress-bar {
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: var(--radius-pill);
        }
        .rank-score {
            font-size: 24px;
            font-weight: 800;
            color: var(--accent-2);
            min-width: 56px;
            text-align: right;
        }

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

        .custom-accordion .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm) !important;
            margin-bottom: 16px;
            overflow: hidden;
            background: #fff;
            box-shadow: 0 2px 10px rgba(2, 12, 27, 0.04);
        }
        .custom-accordion .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 20px 24px;
            background: #fff;
            border: none;
            box-shadow: none !important;
        }
        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
        }
        .custom-accordion .accordion-button:focus {
            box-shadow: none;
        }
        .custom-accordion .accordion-button::after {
            background-size: 16px;
            transition: var(--transition);
        }
        .custom-accordion .accordion-body {
            padding: 0 24px 24px;
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.8;
        }

        .cta-section {
            padding: 80px 0;
            background: linear-gradient(120deg, var(--primary) 0%, #4f46e5 50%, var(--accent) 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-box {
            color: #fff;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            padding: 40px 0;
        }
        .cta-box h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .cta-box p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 17px;
            margin-bottom: 32px;
        }
        .cta-box .btn {
            --bs-btn-bg: #fff;
            --bs-btn-border-color: #fff;
            --bs-btn-color: var(--primary);
            --bs-btn-hover-bg: #f1f5f9;
            --bs-btn-hover-border-color: #f1f5f9;
            --bs-btn-hover-color: var(--primary-dark);
            --bs-btn-active-bg: #f1f5f9;
            --bs-btn-active-border-color: #f1f5f9;
            --bs-btn-active-color: var(--primary-dark);
            border-radius: var(--radius-pill);
            padding: 15px 40px;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }

        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 72px 0 0;
            font-size: 14px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            width: 38px;
            height: 38px;
            font-size: 16px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            box-shadow: 0 4px 10px rgba(37, 99, 235, 0.25);
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
        }
        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        .footer-list li {
            margin-bottom: 10px;
        }
        .footer-list a {
            color: rgba(255, 255, 255, 0.7);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-list a:hover {
            color: var(--accent-2);
            padding-left: 4px;
        }
        .footer-list i {
            font-size: 12px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-contact i {
            color: var(--accent-2);
            width: 18px;
            text-align: center;
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 24px 0;
            margin-top: 48px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
        }
        .footer-bottom p {
            margin: 0;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.8);
        }
        .footer-bottom a:hover {
            color: var(--accent-2);
        }

        @media (max-width: 991.98px) {
            .section {
                padding: 70px 0;
            }
            .section-title {
                font-size: 30px;
            }
            .page-hero {
                padding: 80px 0;
            }
            .hero-content h1 {
                font-size: 42px;
            }
            .navbar-collapse {
                padding: 16px 0;
            }
            .desktop-search {
                width: 100%;
                max-width: 100%;
                margin: 0 0 14px;
            }
            .nav-menu {
                width: 100%;
                margin-left: 0;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 767.98px) {
            .section {
                padding: 56px 0;
            }
            .page-hero {
                padding: 60px 0;
            }
            .hero-content h1 {
                font-size: 34px;
            }
            .hero-content .lead {
                font-size: 16px;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-desc {
                font-size: 15px;
            }
            .stat-card {
                padding: 20px;
            }
            .stat-value {
                font-size: 34px;
            }
            .rank-item {
                flex-wrap: wrap;
                gap: 10px;
            }
            .rank-score {
                min-width: auto;
            }
            .cta-box h2 {
                font-size: 28px;
            }
        }

        @media (max-width: 575.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 26px;
            }
            .page-hero {
                padding: 52px 0;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .guide-img-wrap {
                height: 190px;
            }
        }