/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #1a3a6b;
            --primary-light: #2a5a9e;
            --primary-dark: #0f2444;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --accent: #c0392b;
            --bg-light: #f7f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-dark: #1a2332;
            --text-body: #3d4a5e;
            --text-muted: #7a8a9e;
            --text-light: #f0f4fa;
            --border-light: #e2e8f0;
            --border-medium: #c8d2de;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(26, 58, 107, 0.06);
            --shadow-md: 0 6px 24px rgba(26, 58, 107, 0.10);
            --shadow-lg: 0 12px 40px rgba(26, 58, 107, 0.14);
            --shadow-xl: 0 20px 60px rgba(26, 58, 107, 0.18);
            --spacing-xs: 0.4rem;
            --spacing-sm: 0.8rem;
            --spacing-md: 1.6rem;
            --spacing-lg: 3.2rem;
            --spacing-xl: 5.6rem;
            --spacing-2xl: 8rem;
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            font-size: 16px;
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            margin: 0;
            padding: 0;
        }

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        /* ===== Container ===== */
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

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

        .section-padding-lg {
            padding: var(--spacing-2xl) 0;
        }

        /* ===== Header / 第一行导航 ===== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow-sm);
        }

        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.7rem 0;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.3rem;
            font-weight: 700;
            flex-shrink: 0;
            box-shadow: 0 2px 10px rgba(26, 58, 107, 0.2);
        }

        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--secondary);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
        }

        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 0.35rem 0.35rem 0.35rem 1rem;
            border: 1px solid var(--border-light);
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(42, 90, 158, 0.12);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 0.4rem 0;
            min-width: 160px;
            font-size: 0.9rem;
            color: var(--text-dark);
            outline: none;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 50px;
            padding: 0.45rem 1.1rem;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .search-box button:hover {
            background: var(--primary-light);
            transform: scale(1.02);
        }
        .search-box button:active {
            transform: scale(0.96);
        }

        .header-cta-btn {
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: var(--primary-dark) !important;
            padding: 0.5rem 1.4rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: transform var(--transition), box-shadow var(--transition);
            white-space: nowrap;
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
        }
        .header-cta-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(232, 168, 56, 0.35);
            color: var(--primary-dark) !important;
        }
        .header-cta-btn:active {
            transform: translateY(0);
        }

        /* ===== 第二行频道 Tabs ===== */
        .nav-tabs-row {
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            padding: 0.4rem 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border-medium) transparent;
        }
        .nav-tabs-row::-webkit-scrollbar {
            height: 4px;
        }
        .nav-tabs-row::-webkit-scrollbar-thumb {
            background: var(--border-medium);
            border-radius: 10px;
        }

        .nav-tabs-inner {
            display: flex;
            gap: 0.25rem;
            align-items: center;
            flex-wrap: nowrap;
            min-width: max-content;
            padding: 0 0.2rem;
        }

        .nav-tab-item {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
            padding: 0.5rem 1.2rem;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-body);
            background: transparent;
            transition: background var(--transition), color var(--transition), box-shadow var(--transition);
            white-space: nowrap;
            text-decoration: none;
            border: none;
            cursor: pointer;
        }
        .nav-tab-item i {
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }
        .nav-tab-item:hover {
            background: var(--bg-light);
            color: var(--primary);
        }
        .nav-tab-item:hover i {
            color: var(--primary-light);
        }
        .nav-tab-item.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 58, 107, 0.25);
        }
        .nav-tab-item.active i {
            color: rgba(255, 255, 255, 0.85);
        }
        .nav-tab-item:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
        }

        /* ===== Hero ===== */
        .hero-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 50%, rgba(232, 168, 56, 0.15) 0%, transparent 60%),
                radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin: 0 0 var(--spacing-sm);
            letter-spacing: -0.5px;
        }
        .hero-content h1 .highlight {
            color: var(--secondary);
        }
        .hero-content .hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 0 var(--spacing-md);
            line-height: 1.7;
            max-width: 520px;
        }

        .hero-stats {
            display: flex;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-md);
            flex-wrap: wrap;
        }
        .hero-stat-item {
            text-align: center;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            display: block;
            margin-top: 0.15rem;
        }

        .hero-actions {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
            margin-top: var(--spacing-md);
        }
        .hero-btn-primary {
            background: var(--secondary);
            color: var(--primary-dark) !important;
            padding: 0.8rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: transform var(--transition), box-shadow var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            border: none;
            cursor: pointer;
        }
        .hero-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(232, 168, 56, 0.35);
            color: var(--primary-dark) !important;
        }
        .hero-btn-primary:active {
            transform: translateY(0);
        }

        .hero-btn-outline {
            background: transparent;
            color: #fff !important;
            padding: 0.8rem 2.2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .hero-btn-outline:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
            color: #fff !important;
        }
        .hero-btn-outline:active {
            transform: translateY(0);
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-card-mock {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid rgba(255, 255, 255, 0.12);
            width: 100%;
            max-width: 460px;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
        }
        .hero-card-mock .mock-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            padding: 0.8rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .hero-card-mock .mock-item:last-child {
            border-bottom: none;
        }
        .mock-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .mock-dot.gold {
            background: var(--secondary);
        }
        .mock-dot.blue {
            background: #5b8fd9;
        }
        .mock-dot.green {
            background: #4ecdc4;
        }
        .mock-text {
            flex: 1;
        }
        .mock-text .line {
            height: 10px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.15);
            margin-bottom: 5px;
            width: 80%;
        }
        .mock-text .line.short {
            width: 50%;
        }
        .mock-text .line.tag {
            width: 30%;
            height: 8px;
            background: var(--secondary);
            opacity: 0.5;
        }

        /* ===== 板块通用标题 ===== */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin: 0 0 0.4rem;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-muted);
            margin: 0 0 var(--spacing-lg);
            max-width: 600px;
        }
        .section-header {
            margin-bottom: var(--spacing-lg);
        }
        .section-header.centered {
            text-align: center;
        }
        .section-header.centered .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 分类卡片入口 ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: var(--spacing-md);
        }

        .category-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            text-align: center;
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            box-shadow: var(--shadow-sm);
            display: block;
            color: var(--text-dark);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
            color: var(--text-dark);
        }
        .category-card:active {
            transform: translateY(-2px);
        }
        .category-card .icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto var(--spacing-sm);
            font-size: 1.6rem;
            color: var(--primary);
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .category-card:hover .icon-circle {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .category-card h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 0 0 0.3rem;
        }
        .category-card p {
            font-size: 0.88rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }
        .category-card .tag-badge {
            display: inline-block;
            margin-top: 0.6rem;
            padding: 0.2rem 0.8rem;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--bg-light);
            color: var(--text-muted);
            transition: background var(--transition), color var(--transition);
        }
        .category-card:hover .tag-badge {
            background: var(--secondary);
            color: var(--primary-dark);
        }

        /* ===== 资讯 / 内容列表 ===== */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-md);
        }

        .content-card {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border-light);
            transition: transform var(--transition), box-shadow var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        .content-card .card-img {
            height: 180px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 2.5rem;
            position: relative;
            overflow: hidden;
        }
        .content-card .card-img .img-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 0.6rem 1rem;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.4));
            display: flex;
            gap: 0.4rem;
            flex-wrap: wrap;
        }
        .content-card .card-img .img-overlay .badge {
            background: var(--secondary);
            color: var(--primary-dark);
            font-size: 0.7rem;
            font-weight: 700;
            padding: 0.15rem 0.7rem;
            border-radius: 50px;
        }
        .content-card .card-img .img-overlay .badge.blue {
            background: var(--primary-light);
            color: #fff;
        }
        .content-card .card-body {
            padding: var(--spacing-md);
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-card .card-body .card-category {
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary-light);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 0.3rem;
        }
        .content-card .card-body h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 0.5rem;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0 0 var(--spacing-sm);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .content-card .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 var(--spacing-md) var(--spacing-sm);
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .content-card .card-footer .date {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .content-card .card-footer .read-more {
            color: var(--primary-light);
            font-weight: 600;
            transition: color var(--transition);
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }
        .content-card .card-footer .read-more:hover {
            color: var(--primary);
        }

        /* ===== 数据 / 指标区块 ===== */
        .metrics-section {
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            text-align: center;
        }

        .metric-item {
            padding: var(--spacing-md) 0;
        }
        .metric-item .metric-num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -1px;
        }
        .metric-item .metric-num .plus {
            color: var(--secondary);
        }
        .metric-item .metric-label {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-top: 0.2rem;
        }

        /* ===== 流程 / 步骤 ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            counter-reset: step;
        }

        .step-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: transform var(--transition), box-shadow var(--transition);
            counter-increment: step;
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .step-item .step-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: rgba(26, 58, 107, 0.08);
            line-height: 1;
            margin-bottom: 0.2rem;
            font-family: 'Inter', sans-serif;
        }
        .step-item h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-dark);
            margin: 0 0 0.4rem;
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.6;
        }
        .step-item .step-icon {
            display: inline-flex;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--bg-light);
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.2rem;
            margin-bottom: 0.5rem;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: box-shadow var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            padding: var(--spacing-md);
            font-weight: 600;
            color: var(--text-dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            list-style: none;
            transition: color var(--transition);
            font-size: 1rem;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 0.8rem;
            color: var(--text-muted);
            transition: transform var(--transition), color var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item summary:hover {
            color: var(--primary);
        }
        .faq-item .faq-content {
            padding: 0 var(--spacing-md) var(--spacing-md);
            color: var(--text-body);
            font-size: 0.95rem;
            line-height: 1.7;
            border-top: 1px solid var(--border-light);
            padding-top: var(--spacing-sm);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: var(--spacing-2xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 70% 30%, rgba(232, 168, 56, 0.12) 0%, transparent 60%);
            pointer-events: none;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 var(--spacing-sm);
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto var(--spacing-md);
            position: relative;
            z-index: 1;
        }
        .cta-section .cta-btn-group {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-btn-primary {
            background: var(--secondary);
            color: var(--primary-dark) !important;
            padding: 0.85rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: transform var(--transition), box-shadow var(--transition);
            border: none;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .cta-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(232, 168, 56, 0.35);
            color: var(--primary-dark) !important;
        }
        .cta-btn-primary:active {
            transform: translateY(0);
        }
        .cta-btn-outline-light {
            background: transparent;
            color: #fff !important;
            padding: 0.85rem 2.5rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1.05rem;
            border: 2px solid rgba(255, 255, 255, 0.3);
            transition: background var(--transition), border-color var(--transition), transform var(--transition);
        }
        .cta-btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
            transform: translateY(-2px);
            color: #fff !important;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin: 0 0 var(--spacing-sm);
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.7;
            margin: 0 0 var(--spacing-sm);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 0.4rem;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
        }
        .footer-social {
            display: flex;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-sm);
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            transition: background var(--transition), color var(--transition), transform var(--transition);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 暂无信息 ===== */
        .empty-state {
            text-align: center;
            padding: var(--spacing-lg) 0;
            color: var(--text-muted);
            font-size: 1rem;
        }
        .empty-state i {
            font-size: 2.5rem;
            display: block;
            margin-bottom: var(--spacing-sm);
            opacity: 0.5;
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .hero-visual {
                order: -1;
            }
            .hero-card-mock {
                max-width: 100%;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media screen and (max-width: 768px) {
            .header-top {
                flex-direction: column;
                align-items: stretch;
                gap: var(--spacing-sm);
            }
            .logo-area {
                justify-content: center;
            }
            .header-right {
                justify-content: center;
                flex-wrap: wrap;
            }
            .search-box input {
                min-width: 120px;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .hero-stats {
                gap: var(--spacing-md);
            }
            .hero-stat-item .num {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .metric-item .metric-num {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .nav-tab-item {
                padding: 0.4rem 0.9rem;
                font-size: 0.82rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-btn-primary,
            .hero-btn-outline {
                justify-content: center;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .cta-section .cta-btn-group {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-btn-primary,
            .cta-btn-outline-light {
                justify-content: center;
            }
        }

        @media screen and (max-width: 520px) {
            .container-custom {
                padding: 0 var(--spacing-sm);
            }
            .section-padding {
                padding: var(--spacing-lg) 0;
            }
            .section-padding-lg {
                padding: var(--spacing-xl) 0;
            }
            .hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-content .hero-desc {
                font-size: 0.95rem;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .hero-stat-item .num {
                font-size: 1.3rem;
            }
            .search-box input {
                min-width: 80px;
                font-size: 0.8rem;
            }
            .search-box button {
                padding: 0.35rem 0.8rem;
                font-size: 0.78rem;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .faq-item summary {
                font-size: 0.92rem;
                padding: var(--spacing-sm);
            }
            .faq-item .faq-content {
                font-size: 0.88rem;
                padding: 0 var(--spacing-sm) var(--spacing-sm);
            }
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-lg {
            margin-top: var(--spacing-lg);
        }
        .mb-lg {
            margin-bottom: var(--spacing-lg);
        }
        .gap-sm {
            gap: var(--spacing-sm);
        }
        .flex-wrap {
            flex-wrap: wrap;
        }
        .d-flex {
            display: flex;
        }
        .align-center {
            align-items: center;
        }
        .justify-center {
            justify-content: center;
        }

/* roulang page: article */
:root {
            --primary: #1a2a6c;
            --primary-dark: #0f1a4a;
            --primary-light: #2a3f8a;
            --secondary: #e74c3c;
            --secondary-light: #ff6b5a;
            --accent: #f39c12;
            --bg-light: #f8f9fc;
            --bg-card: #ffffff;
            --bg-dark: #0f1a2e;
            --text-dark: #1a1a2e;
            --text-body: #2d3436;
            --text-muted: #636e72;
            --text-light: #b2bec3;
            --border-color: #e8eaf0;
            --border-light: #f0f2f6;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
            --shadow-md: 0 6px 24px rgba(0,0,0,0.07);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            color: var(--text-body);
            background: var(--bg-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        a { color: var(--primary); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-custom { padding: 0 16px; }
        }

        /* ===== 导航 ===== */
        .site-header {
            background: var(--bg-card);
            box-shadow: 0 2px 16px rgba(0,0,0,0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(12px);
            background: rgba(255,255,255,0.96);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 20px;
            letter-spacing: -1px;
            box-shadow: 0 4px 12px rgba(26,42,108,0.25);
        }
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .logo-text span { color: var(--secondary); font-weight: 800; }
        .header-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-light);
            border-radius: 50px;
            padding: 2px 2px 2px 18px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            min-width: 220px;
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(26,42,108,0.10);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 14px;
            outline: none;
            flex: 1;
            min-width: 80px;
            color: var(--text-dark);
        }
        .search-box input::placeholder { color: var(--text-muted); }
        .search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .search-box button:hover { background: var(--primary-dark); transform: scale(0.97); }
        .header-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(231,76,60,0.25);
        }
        .header-cta-btn:hover { background: linear-gradient(135deg, #c0392b, var(--secondary)); color: #fff; transform: translateY(-1px); box-shadow: 0 6px 20px rgba(231,76,60,0.35); }
        .nav-tabs-row {
            background: var(--primary);
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .nav-tabs-inner {
            display: flex;
            gap: 4px;
            padding: 6px 0;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .nav-tabs-inner::-webkit-scrollbar { display: none; }
        .nav-tab-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255,255,255,0.75);
            transition: var(--transition);
            white-space: nowrap;
            background: transparent;
        }
        .nav-tab-item i { font-size: 13px; }
        .nav-tab-item:hover { color: #fff; background: rgba(255,255,255,0.12); }
        .nav-tab-item.active { color: #fff; background: rgba(255,255,255,0.18); font-weight: 600; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
        @media (max-width: 768px) {
            .header-top { flex-direction: column; align-items: stretch; gap: 10px; }
            .header-right { justify-content: center; }
            .search-box { min-width: 100%; }
            .search-box button { padding: 8px 16px; font-size: 12px; }
            .header-cta-btn { padding: 6px 16px; font-size: 12px; }
            .logo-text { font-size: 18px; }
            .nav-tab-item { padding: 6px 14px; font-size: 13px; }
        }

        /* ===== 文章页 ===== */
        .article-wrapper {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 40px 48px;
            margin: 32px 0;
        }
        @media (max-width: 768px) {
            .article-wrapper { padding: 24px 20px; margin: 16px 0; border-radius: var(--radius-sm); }
        }
        .article-header {
            margin-bottom: 32px;
            border-bottom: 1px solid var(--border-light);
            padding-bottom: 24px;
        }
        .article-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }
        .article-breadcrumb a { color: var(--text-muted); }
        .article-breadcrumb a:hover { color: var(--primary); }
        .article-breadcrumb .sep { color: var(--text-light); }
        .article-category-badge {
            display: inline-block;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .article-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        @media (max-width: 768px) {
            .article-title { font-size: 24px; }
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            color: var(--text-muted);
            font-size: 14px;
            flex-wrap: wrap;
        }
        .article-meta i { margin-right: 4px; color: var(--primary-light); }
        .article-meta .author { display: flex; align-items: center; gap: 6px; }
        .article-meta .author-avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 12px;
            font-weight: 700;
        }
        .article-featured-image {
            width: 100%;
            border-radius: var(--radius-md);
            margin: 24px 0 32px;
            box-shadow: var(--shadow-md);
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--border-light);
        }
        .article-body {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-body);
        }
        .article-body p {
            margin-bottom: 1.2em;
        }
        .article-body h2, .article-body h3 {
            color: var(--text-dark);
            font-weight: 700;
            margin-top: 1.8em;
            margin-bottom: 0.6em;
        }
        .article-body h2 { font-size: 24px; }
        .article-body h3 { font-size: 20px; }
        .article-body ul, .article-body ol {
            margin-bottom: 1.2em;
            padding-left: 1.6em;
        }
        .article-body li { margin-bottom: 0.4em; }
        .article-body blockquote {
            border-left: 4px solid var(--secondary);
            background: var(--bg-light);
            padding: 16px 24px;
            margin: 1.2em 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-muted);
            font-style: italic;
        }
        .article-body a { color: var(--secondary); text-decoration: underline; }
        .article-body a:hover { color: var(--secondary-light); }
        .article-body img { border-radius: var(--radius-md); margin: 1.2em 0; box-shadow: var(--shadow-sm); }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
        }
        .article-tag {
            display: inline-block;
            background: var(--bg-light);
            color: var(--text-muted);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 12px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .article-tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-top: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-light);
        }
        .article-share span { font-size: 14px; color: var(--text-muted); font-weight: 600; }
        .article-share a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--bg-light);
            color: var(--text-muted);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .article-share a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
        .article-nav {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-light);
            flex-wrap: wrap;
        }
        .article-nav a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: 50px;
            background: var(--bg-light);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }
        .article-nav a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-1px); }
        .article-nav .prev i { margin-right: 4px; }
        .article-nav .next i { margin-left: 4px; }

        /* ===== 侧边栏 ===== */
        .sidebar-section {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            margin-bottom: 24px;
        }
        .sidebar-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .sidebar-title i { color: var(--secondary); font-size: 16px; }
        .sidebar-title::after {
            content: '';
            flex: 1;
            height: 2px;
            background: linear-gradient(90deg, var(--border-color), transparent);
            margin-left: 8px;
        }
        .sidebar-list-item {
            display: flex;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .sidebar-list-item:last-child { border-bottom: none; }
        .sidebar-list-item:hover { padding-left: 4px; }
        .sidebar-list-item .thumb {
            width: 70px;
            height: 52px;
            border-radius: var(--radius-sm);
            background: var(--border-light);
            flex-shrink: 0;
            object-fit: cover;
        }
        .sidebar-list-item .info { flex: 1; }
        .sidebar-list-item .info h5 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-list-item .info h5 a { color: var(--text-dark); }
        .sidebar-list-item .info h5 a:hover { color: var(--secondary); }
        .sidebar-list-item .info .date { font-size: 12px; color: var(--text-muted); }
        .sidebar-category-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-category-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            background: var(--bg-light);
            color: var(--text-body);
            font-size: 14px;
            font-weight: 500;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .sidebar-category-list a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateX(4px); }
        .sidebar-category-list a .count {
            background: rgba(0,0,0,0.08);
            padding: 0 10px;
            border-radius: 50px;
            font-size: 12px;
        }
        .sidebar-category-list a:hover .count { background: rgba(255,255,255,0.2); color: #fff; }
        .sidebar-cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-md);
            padding: 28px 24px;
            color: #fff;
            text-align: center;
        }
        .sidebar-cta-box h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
        .sidebar-cta-box p { font-size: 14px; opacity: 0.85; margin-bottom: 16px; }
        .sidebar-cta-box .btn {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }
        .sidebar-cta-box .btn:hover { background: #fff; color: var(--primary); transform: scale(0.96); }

        /* ===== 相关文章 ===== */
        .related-section {
            margin: 40px 0;
        }
        .related-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-title i { color: var(--secondary); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        @media (max-width: 900px) {
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 600px) {
            .related-grid { grid-template-columns: 1fr; }
        }
        .related-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .related-card .card-img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            background: var(--border-light);
        }
        .related-card .card-body { padding: 18px 20px 20px; }
        .related-card .card-body h5 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h5 a { color: var(--text-dark); }
        .related-card .card-body h5 a:hover { color: var(--secondary); }
        .related-card .card-body .meta { font-size: 12px; color: var(--text-muted); display: flex; gap: 12px; }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255,255,255,0.8);
            padding: 60px 0 0;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        @media (max-width: 900px) {
            .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 28px; }
        }
        @media (max-width: 520px) {
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col p { font-size: 14px; line-height: 1.7; opacity: 0.75; margin-bottom: 16px; }
        .footer-social { display: flex; gap: 10px; }
        .footer-social a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.08);
            color: rgba(255,255,255,0.7);
            transition: var(--transition);
            font-size: 16px;
        }
        .footer-social a:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); }
        .footer-col ul { list-style: none; }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 14px;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-col ul li a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.7); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== 未找到状态 ===== */
        .not-found-box {
            text-align: center;
            padding: 60px 24px;
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin: 32px 0;
        }
        .not-found-box i { font-size: 64px; color: var(--text-light); margin-bottom: 16px; }
        .not-found-box h2 { font-size: 28px; color: var(--text-dark); margin-bottom: 8px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }
        .not-found-box .btn-home {
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== 全局响应式 ===== */
        @media (max-width: 768px) {
            .article-wrapper { padding: 20px 16px; }
            .article-title { font-size: 22px; }
            .article-body { font-size: 15px; }
            .sidebar-section { padding: 20px 16px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }
        @media print {
            .site-header, .site-footer, .sidebar-section, .related-section, .article-nav, .article-share { display: none; }
            .article-wrapper { box-shadow: none; padding: 0; }
            body { background: #fff; }
        }

/* roulang page: category1 */
/* ===== :root 设计变量 ===== */
        :root {
            --primary: #0f1e3a;
            --primary-light: #1a2d52;
            --primary-dark: #0a1428;
            --secondary: #f0b34b;
            --secondary-light: #f8cd7a;
            --secondary-dark: #d4942e;
            --accent: #e85d3a;
            --bg-body: #f4f6fb;
            --bg-card: #ffffff;
            --bg-dark: #0b1424;
            --bg-section-alt: #eef1f7;
            --text-primary: #0f1a30;
            --text-secondary: #2d3a52;
            --text-muted: #6a7a94;
            --text-light: #f0f3fa;
            --border-color: #dce1ec;
            --border-light: #e8ecf3;
            --shadow-sm: 0 2px 8px rgba(15, 30, 58, 0.06);
            --shadow-md: 0 6px 24px rgba(15, 30, 58, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 30, 58, 0.12);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
            --font-heading: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --container-max: 1200px;
            --header-top-h: 68px;
            --nav-tabs-h: 52px;
            --spacer-section: 4.8rem;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        a:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            transition: var(--transition);
        }
        button:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            line-height: 1.25;
            color: var(--text-primary);
            font-weight: 700;
        }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== Header / 双层导航 ===== */
        .site-header {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }
        .header-top {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-top-h);
            flex-wrap: nowrap;
            gap: 16px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-weight: 800;
            font-size: 1.4rem;
            box-shadow: 0 2px 8px rgba(15, 30, 58, 0.15);
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .logo-text span {
            color: var(--secondary);
            font-weight: 700;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: var(--transition);
            max-width: 280px;
            width: 100%;
        }
        .search-box:focus-within {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(240, 179, 75, 0.15);
        }
        .search-box input {
            border: none;
            background: transparent;
            padding: 8px 16px;
            outline: none;
            flex: 1;
            min-width: 0;
            color: var(--text-primary);
            font-size: 0.9rem;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box button {
            border: none;
            background: transparent;
            padding: 8px 16px;
            color: var(--text-muted);
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .search-box button:hover {
            color: var(--primary);
        }
        .header-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
            color: var(--primary-dark);
            padding: 8px 20px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 2px 8px rgba(240, 179, 75, 0.25);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }
        .header-cta-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(240, 179, 75, 0.35);
            color: var(--primary-dark);
        }
        .header-cta-btn:active {
            transform: translateY(0);
        }

        /* 导航 Tab 行 */
        .nav-tabs-row {
            background: var(--primary);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
        }
        .nav-tabs-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            height: var(--nav-tabs-h);
            overflow-x: auto;
            overflow-y: hidden;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            white-space: nowrap;
            padding: 0 4px;
        }
        .nav-tabs-inner::-webkit-scrollbar {
            display: none;
        }
        .nav-tab-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border-radius: var(--radius-xl);
            font-size: 0.88rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
            flex-shrink: 0;
            text-decoration: none;
            border: 1px solid transparent;
        }
        .nav-tab-item i {
            font-size: 0.9rem;
        }
        .nav-tab-item:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.08);
        }
        .nav-tab-item.active {
            color: var(--primary-dark);
            background: var(--secondary);
            font-weight: 600;
            box-shadow: 0 2px 12px rgba(240, 179, 75, 0.3);
        }
        .nav-tab-item.active:hover {
            background: var(--secondary-light);
            color: var(--primary-dark);
        }
        .nav-tab-item:focus-visible {
            outline: 3px solid var(--secondary);
            outline-offset: 2px;
            border-radius: var(--radius-xl);
        }

        /* ===== Hero / 分类首屏 ===== */
        .category-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 4rem 0 3.6rem;
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            opacity: 0.5;
        }
        .category-hero .container-custom {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .category-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(240, 179, 75, 0.18);
            color: var(--secondary-light);
            padding: 4px 18px;
            border-radius: var(--radius-xl);
            font-size: 0.8rem;
            font-weight: 500;
            letter-spacing: 1px;
            text-transform: uppercase;
            border: 1px solid rgba(240, 179, 75, 0.15);
            margin-bottom: 1.2rem;
        }
        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: -0.5px;
        }
        .category-hero h1 span {
            color: var(--secondary);
        }
        .category-hero p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.7);
            max-width: 680px;
            margin: 0 auto 1.8rem;
            line-height: 1.7;
        }
        .hero-stats-row {
            display: flex;
            justify-content: center;
            gap: 2.8rem;
            flex-wrap: wrap;
            margin-top: 1.2rem;
        }
        .hero-stat-item {
            text-align: center;
            color: #fff;
        }
        .hero-stat-item .num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--secondary);
            display: block;
            line-height: 1.2;
        }
        .hero-stat-item .label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 2px;
        }

        /* ===== 通用板块标题 ===== */
        .section-title-wrap {
            text-align: center;
            margin-bottom: 2.8rem;
        }
        .section-title-wrap h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
        }
        .section-title-wrap h2 span {
            color: var(--secondary);
        }
        .section-title-wrap p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto;
            font-size: 1rem;
        }
        .section-title-wrap .title-line {
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--secondary), var(--secondary-light));
            border-radius: 4px;
            margin: 0.8rem auto 0;
        }

        /* ===== 标签筛选 ===== */
        .tag-filter-bar {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-bottom: 2.4rem;
        }
        .tag-filter-item {
            padding: 6px 20px;
            border-radius: var(--radius-xl);
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .tag-filter-item:hover {
            border-color: var(--secondary);
            color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .tag-filter-item.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(15, 30, 58, 0.2);
        }

        /* ===== 指南卡片网格 ===== */
        .guide-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }
        .guide-card-img {
            height: 180px;
            background: var(--bg-section-alt);
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 2.6rem;
        }
        .guide-card-img .overlay-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 2px 14px;
            border-radius: var(--radius-xl);
            font-size: 0.75rem;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }
        .guide-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .guide-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card-body .card-cat {
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--secondary-dark);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .guide-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
            line-height: 1.35;
        }
        .guide-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
        }
        .guide-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-light);
        }
        .guide-card-footer .meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .guide-card-footer .meta i {
            font-size: 0.75rem;
        }
        .guide-card-footer .read-more {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .guide-card-footer .read-more:hover {
            color: var(--secondary);
            gap: 8px;
        }

        /* ===== 精选深度指南 (图文) ===== */
        .featured-guide {
            display: flex;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .featured-guide:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }
        .featured-guide-img {
            flex: 0 0 44%;
            min-height: 320px;
            background: var(--bg-section-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3.6rem;
            color: var(--text-muted);
            position: relative;
        }
        .featured-guide-img .badge-xl {
            position: absolute;
            top: 16px;
            left: 16px;
            background: var(--accent);
            color: #fff;
            padding: 4px 20px;
            border-radius: var(--radius-xl);
            font-size: 0.85rem;
            font-weight: 600;
            box-shadow: 0 4px 12px rgba(232, 93, 58, 0.25);
        }
        .featured-guide-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .featured-guide-body {
            flex: 1;
            padding: 2.4rem 2.8rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-guide-body .fg-cat {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--secondary-dark);
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }
        .featured-guide-body h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .featured-guide-body p {
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 1.4rem;
        }
        .featured-guide-body .fg-meta {
            display: flex;
            gap: 20px;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 1.2rem;
        }
        .featured-guide-body .fg-meta i {
            margin-right: 4px;
            color: var(--secondary);
        }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 14px rgba(15, 30, 58, 0.15);
            align-self: flex-start;
        }
        .btn-primary-custom:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(15, 30, 58, 0.2);
            color: #fff;
        }
        .btn-primary-custom:active {
            transform: translateY(0);
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: var(--primary);
            padding: 3.6rem 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stats-grid .stat-cell .num {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--secondary);
            line-height: 1.2;
        }
        .stats-grid .stat-cell .label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }
        .stats-grid .stat-cell .stat-icon {
            font-size: 1.8rem;
            color: rgba(255, 255, 255, 0.1);
            margin-bottom: 8px;
        }

        /* ===== 学习路径/流程 ===== */
        .path-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }
        .path-step {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
            position: relative;
        }
        .path-step:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--secondary);
        }
        .path-step .step-num {
            width: 44px;
            height: 44px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            margin: 0 auto 14px;
            box-shadow: 0 4px 12px rgba(15, 30, 58, 0.12);
        }
        .path-step h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .path-step p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .faq-item:hover {
            border-color: var(--border-color);
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
        }
        .faq-question:hover {
            color: var(--primary-light);
        }
        .faq-question .faq-icon {
            font-size: 1.2rem;
            color: var(--secondary);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-question[aria-expanded="true"] .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .faq-answer.open {
            max-height: 400px;
            padding: 0 24px 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 4rem 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 520px;
            margin: 0 auto 1.8rem;
            font-size: 1.05rem;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-cta-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--secondary);
            color: var(--primary-dark);
            padding: 14px 36px;
            border-radius: var(--radius-xl);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(240, 179, 75, 0.25);
        }
        .btn-cta-primary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 32px rgba(240, 179, 75, 0.35);
            color: var(--primary-dark);
        }
        .btn-cta-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            padding: 14px 36px;
            border-radius: var(--radius-xl);
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid rgba(255, 255, 255, 0.25);
            cursor: pointer;
        }
        .btn-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 3.2rem 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 2.4rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 1rem;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-social a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 1.1rem;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--secondary);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.4rem 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.35);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 板块间距 ===== */
        .section-padding {
            padding: var(--spacer-section) 0;
        }
        .section-bg-alt {
            background: var(--bg-section-alt);
        }
        .section-bg-white {
            background: var(--bg-card);
        }

        /* ===== Foundation 覆盖 ===== */
        .grid-container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        .cell {
            margin-bottom: 0;
        }

        /* ===== 响应式断点 ===== */
        @media (max-width: 1024px) {
            :root {
                --spacer-section: 3.6rem;
            }
            .guide-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .category-hero h1 {
                font-size: 2.2rem;
            }
            .featured-guide {
                flex-direction: column;
            }
            .featured-guide-img {
                flex: none;
                min-height: 240px;
            }
            .featured-guide-body {
                padding: 1.8rem 2rem;
            }
            .featured-guide-body h3 {
                font-size: 1.3rem;
            }
            .path-steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --header-top-h: 60px;
                --nav-tabs-h: 46px;
                --spacer-section: 2.8rem;
            }
            .header-top {
                gap: 8px;
            }
            .logo-text {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 34px;
                height: 34px;
                font-size: 1.1rem;
            }
            .search-box {
                max-width: 180px;
            }
            .search-box input {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .search-box button {
                padding: 6px 10px;
                font-size: 0.8rem;
            }
            .search-box button span {
                display: none;
            }
            .header-cta-btn {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .header-cta-btn span {
                display: none;
            }
            .nav-tab-item {
                padding: 6px 14px;
                font-size: 0.82rem;
            }
            .category-hero {
                padding: 2.8rem 0 2.4rem;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .category-hero p {
                font-size: 0.95rem;
            }
            .hero-stats-row {
                gap: 1.6rem;
            }
            .hero-stat-item .num {
                font-size: 1.5rem;
            }
            .guide-card-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .guide-card-img {
                height: 160px;
            }
            .section-title-wrap h2 {
                font-size: 1.6rem;
            }
            .featured-guide-body {
                padding: 1.4rem 1.6rem;
            }
            .featured-guide-body h3 {
                font-size: 1.2rem;
            }
            .path-steps {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stats-grid .stat-cell .num {
                font-size: 2rem;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .tag-filter-bar {
                gap: 8px;
            }
            .tag-filter-item {
                padding: 4px 14px;
                font-size: 0.82rem;
            }
        }
        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .header-top {
                gap: 6px;
            }
            .logo-text {
                font-size: 1rem;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.95rem;
            }
            .search-box {
                max-width: 130px;
            }
            .search-box input {
                padding: 4px 8px;
                font-size: 0.75rem;
            }
            .search-box button {
                padding: 4px 8px;
                font-size: 0.75rem;
            }
            .header-cta-btn {
                padding: 4px 10px;
                font-size: 0.75rem;
            }
            .nav-tab-item {
                padding: 4px 10px;
                font-size: 0.75rem;
                gap: 4px;
            }
            .nav-tab-item i {
                font-size: 0.75rem;
            }
            .category-hero h1 {
                font-size: 1.5rem;
            }
            .hero-stat-item .num {
                font-size: 1.2rem;
            }
            .guide-card-body {
                padding: 16px 18px 18px;
            }
            .guide-card-body h3 {
                font-size: 1rem;
            }
            .featured-guide-img {
                min-height: 180px;
            }
            .btn-primary-custom {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .btn-cta-primary,
            .btn-cta-secondary {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
            .faq-answer.open {
                padding: 0 16px 14px;
            }
            .stats-grid .stat-cell .num {
                font-size: 1.6rem;
            }
            .section-title-wrap h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category2 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a2b4c;
            --primary-light: #2c4a7a;
            --primary-dark: #0f1a2e;
            --secondary: #e8513a;
            --secondary-light: #f06a55;
            --secondary-dark: #c73a26;
            --accent: #f5a623;
            --accent-light: #f7b84a;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --bg-dark: #0f1a2e;
            --text-dark: #1a2b4c;
            --text-body: #3d4f6a;
            --text-muted: #8899b0;
            --text-white: #ffffff;
            --border-light: #e8ecf2;
            --border-medium: #d0d6e0;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(26, 43, 76, 0.06);
            --shadow-md: 0 8px 24px rgba(26, 43, 76, 0.10);
            --shadow-lg: 0 20px 48px rgba(26, 43, 76, 0.14);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --header-height: 130px;
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-tap-highlight-color: transparent; }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-body);
            background: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height);
        }
        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--secondary); }
        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
        ul, ol { list-style: none; padding: 0; margin: 0; }
        h1, h2, h3, h4, h5, h6 { color: var(--text-dark); line-height: 1.3; font-weight: 700; }
        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Foundation Overrides ===== */
        .grid-container { max-width: var(--container-max); padding-left: 24px; padding-right: 24px; }
        .cell { margin-bottom: 0; }
        .button { transition: var(--transition); font-weight: 600; border-radius: var(--radius-sm); }
        .button:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
        .badge { border-radius: 50px; font-weight: 500; padding: 0.4em 0.9em; }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 12px rgba(26, 43, 76, 0.05);
        }
        .header-top {
            display: flex; align-items: center; justify-content: space-between;
            padding: 14px 0; gap: 20px;
        }
        .logo-area { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
        .logo-icon {
            width: 40px; height: 40px; background: var(--primary); color: var(--text-white);
            border-radius: var(--radius-sm); display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 22px; letter-spacing: -0.5px;
        }
        .logo-text { font-size: 22px; font-weight: 800; color: var(--text-dark); letter-spacing: -0.3px; }
        .logo-text span { color: var(--secondary); }
        .header-right { display: flex; align-items: center; gap: 16px; flex: 1; justify-content: flex-end; }
        .search-box {
            display: flex; align-items: center; background: var(--bg-light);
            border: 1px solid var(--border-light); border-radius: 50px;
            padding: 0 4px 0 18px; transition: var(--transition); max-width: 320px; width: 100%;
        }
        .search-box:focus-within { border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(26, 43, 76, 0.10); }
        .search-box input {
            border: none; background: transparent; padding: 10px 0; font-size: 14px;
            outline: none; width: 100%; color: var(--text-dark);
        }
        .search-box input::placeholder { color: var(--text-muted); }
        .search-box button {
            background: var(--primary); color: var(--text-white); border: none;
            padding: 8px 18px; border-radius: 50px; font-size: 13px; font-weight: 600;
            cursor: pointer; transition: var(--transition); display: flex; align-items: center; gap: 6px;
            white-space: nowrap;
        }
        .search-box button:hover { background: var(--primary-light); }
        .header-cta-btn {
            display: inline-flex; align-items: center; gap: 6px; background: var(--secondary);
            color: var(--text-white); padding: 10px 22px; border-radius: 50px; font-size: 14px;
            font-weight: 600; transition: var(--transition); white-space: nowrap;
        }
        .header-cta-btn:hover { background: var(--secondary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: var(--shadow-md); }

        /* ===== Navigation Tabs Row ===== */
        .nav-tabs-row {
            background: var(--primary); border-top: 1px solid rgba(255,255,255,0.08);
            overflow-x: auto; -webkit-overflow-scrolling: touch;
        }
        .nav-tabs-row::-webkit-scrollbar { display: none; }
        .nav-tabs-inner {
            display: flex; align-items: center; gap: 4px; padding: 6px 0; min-width: max-content;
        }
        .nav-tab-item {
            display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px;
            color: rgba(255,255,255,0.75); font-size: 14px; font-weight: 500;
            border-radius: 50px; transition: var(--transition); white-space: nowrap;
        }
        .nav-tab-item:hover { color: var(--text-white); background: rgba(255,255,255,0.12); }
        .nav-tab-item.active { color: var(--text-white); background: var(--secondary); font-weight: 600; box-shadow: 0 4px 12px rgba(232,81,58,0.35); }

        /* ===== Page Hero ===== */
        .page-hero {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            padding: 60px 0 50px; position: relative; overflow: hidden;
        }
        .page-hero::after {
            content: ''; position: absolute; top: -30%; right: -10%; width: 400px; height: 400px;
            background: radial-gradient(circle, rgba(232,81,58,0.15) 0%, transparent 70%);
            border-radius: 50%; pointer-events: none;
        }
        .page-hero .container-custom { position: relative; z-index: 2; }
        .page-hero h1 { font-size: 38px; font-weight: 800; color: var(--text-white); margin-bottom: 12px; letter-spacing: -0.5px; }
        .page-hero h1 i { color: var(--secondary); margin-right: 10px; }
        .page-hero p { font-size: 18px; color: rgba(255,255,255,0.8); max-width: 680px; line-height: 1.7; }
        .page-hero .hero-meta { display: flex; gap: 24px; margin-top: 20px; flex-wrap: wrap; }
        .page-hero .hero-meta span { color: rgba(255,255,255,0.65); font-size: 14px; display: flex; align-items: center; gap: 6px; }
        .page-hero .hero-meta i { color: var(--accent); }

        /* ===== Section Common ===== */
        .section-block { padding: 70px 0; }
        .section-block.alt-bg { background: var(--bg-white); }
        .section-block.dark-bg { background: var(--bg-dark); }
        .section-title { text-align: center; margin-bottom: 50px; }
        .section-title h2 { font-size: 32px; font-weight: 800; color: var(--text-dark); letter-spacing: -0.3px; }
        .section-title h2 i { color: var(--secondary); margin-right: 8px; }
        .section-title p { color: var(--text-muted); font-size: 16px; max-width: 540px; margin: 8px auto 0; }
        .section-title.light h2 { color: var(--text-white); }
        .section-title.light p { color: rgba(255,255,255,0.7); }

        /* ===== Hot News Grid ===== */
        .hot-news-grid { display: grid; gap: 28px; }
        .hot-news-grid.featured { grid-template-columns: 1fr 1fr; }
        .hot-news-grid.list { grid-template-columns: 1fr; }

        .hot-news-card {
            background: var(--bg-white); border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm); overflow: hidden;
            transition: var(--transition); border: 1px solid var(--border-light);
            display: flex; flex-direction: column;
        }
        .hot-news-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: transparent; }
        .hot-news-card.featured { flex-direction: row; }
        .hot-news-card.featured .card-img { width: 45%; min-height: 280px; }
        .hot-news-card.featured .card-body { width: 55%; padding: 32px; }
        .hot-news-card .card-img {
            position: relative; overflow: hidden; min-height: 200px;
            background: var(--border-light); display: flex; align-items: center; justify-content: center;
            color: var(--text-muted); font-size: 48px;
        }
        .hot-news-card .card-img .img-placeholder {
            width: 100%; height: 100%; object-fit: cover;
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
            display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.2);
            font-size: 60px;
        }
        .hot-news-card .card-badge {
            position: absolute; top: 14px; left: 14px; background: var(--secondary);
            color: var(--text-white); padding: 4px 14px; border-radius: 50px; font-size: 12px;
            font-weight: 600; letter-spacing: 0.3px;
        }
        .hot-news-card .card-body { padding: 22px 24px 24px; flex: 1; display: flex; flex-direction: column; }
        .hot-news-card .card-tag {
            display: inline-block; background: rgba(232,81,58,0.10); color: var(--secondary);
            font-size: 12px; font-weight: 600; padding: 3px 12px; border-radius: 50px;
            margin-bottom: 10px; width: fit-content;
        }
        .hot-news-card h3 { font-size: 20px; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; line-height: 1.4; }
        .hot-news-card.featured h3 { font-size: 26px; }
        .hot-news-card p { color: var(--text-muted); font-size: 14px; line-height: 1.7; flex: 1; }
        .hot-news-card .card-footer {
            display: flex; align-items: center; justify-content: space-between;
            padding: 16px 0 0; border-top: 1px solid var(--border-light); margin-top: 16px;
        }
        .hot-news-card .card-footer .meta { font-size: 13px; color: var(--text-muted); display: flex; gap: 14px; }
        .hot-news-card .card-footer .meta i { margin-right: 4px; }
        .hot-news-card .card-footer .read-more {
            color: var(--secondary); font-weight: 600; font-size: 13px;
            display: inline-flex; align-items: center; gap: 6px;
        }
        .hot-news-card .card-footer .read-more:hover { gap: 10px; }

        /* ===== Speed Block ===== */
        .speed-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
        }
        .speed-item {
            background: var(--bg-white); border-radius: var(--radius-md);
            padding: 30px 24px; text-align: center; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light); transition: var(--transition);
        }
        .speed-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
        .speed-item .num { font-size: 42px; font-weight: 800; color: var(--secondary); line-height: 1.2; }
        .speed-item .num span { font-size: 16px; color: var(--text-muted); font-weight: 400; }
        .speed-item .label { font-size: 14px; color: var(--text-body); margin-top: 6px; font-weight: 500; }
        .speed-item .sub { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

        /* ===== Category Index ===== */
        .cat-index-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .cat-index-card {
            background: var(--bg-white); border-radius: var(--radius-md);
            padding: 28px 24px; text-align: center; box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light); transition: var(--transition);
        }
        .cat-index-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
        .cat-index-card .icon { font-size: 36px; color: var(--secondary); margin-bottom: 14px; }
        .cat-index-card h4 { font-size: 18px; font-weight: 700; color: var(--text-dark); margin-bottom: 6px; }
        .cat-index-card p { font-size: 13px; color: var(--text-muted); margin-bottom: 14px; }
        .cat-index-card .tag-group { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; }
        .cat-index-card .tag-group span {
            background: var(--bg-light); color: var(--text-body); font-size: 12px;
            padding: 2px 12px; border-radius: 50px; border: 1px solid var(--border-light);
        }

        /* ===== Trending List ===== */
        .trending-list { max-width: 800px; margin: 0 auto; }
        .trending-item {
            display: flex; align-items: flex-start; gap: 18px;
            padding: 20px 0; border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .trending-item:last-child { border-bottom: none; }
        .trending-item:hover { padding-left: 8px; }
        .trending-item .rank {
            width: 40px; height: 40px; background: var(--bg-light); border-radius: var(--radius-sm);
            display: flex; align-items: center; justify-content: center; font-weight: 800;
            font-size: 18px; color: var(--text-muted); flex-shrink: 0; border: 1px solid var(--border-light);
        }
        .trending-item:nth-child(1) .rank { background: var(--secondary); color: var(--text-white); border-color: var(--secondary); }
        .trending-item:nth-child(2) .rank { background: var(--accent); color: var(--text-white); border-color: var(--accent); }
        .trending-item:nth-child(3) .rank { background: var(--primary-light); color: var(--text-white); border-color: var(--primary-light); }
        .trending-item .content { flex: 1; }
        .trending-item .content h4 { font-size: 17px; font-weight: 600; color: var(--text-dark); margin-bottom: 4px; }
        .trending-item .content p { font-size: 13px; color: var(--text-muted); }
        .trending-item .hot-tag {
            background: rgba(232,81,58,0.10); color: var(--secondary); font-size: 12px;
            padding: 2px 12px; border-radius: 50px; font-weight: 600; white-space: nowrap;
        }

        /* ===== FAQ ===== */
        .faq-grid { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
        .faq-item {
            background: var(--bg-white); border-radius: var(--radius-md);
            border: 1px solid var(--border-light); overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover { box-shadow: var(--shadow-sm); border-color: var(--border-medium); }
        .faq-question {
            padding: 18px 24px; display: flex; align-items: center; justify-content: space-between;
            cursor: pointer; font-weight: 600; color: var(--text-dark); font-size: 16px;
            background: transparent; border: none; width: 100%; text-align: left;
            transition: var(--transition); gap: 12px;
        }
        .faq-question:hover { color: var(--secondary); }
        .faq-question i { color: var(--secondary); transition: var(--transition); font-size: 14px; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px; color: var(--text-body); font-size: 14px; line-height: 1.8;
            display: none;
        }
        .faq-answer.show { display: block; }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            padding: 70px 0; text-align: center; position: relative; overflow: hidden;
        }
        .cta-section::before {
            content: ''; position: absolute; top: -50%; right: -20%; width: 600px; height: 600px;
            background: radial-gradient(circle, rgba(232,81,58,0.12) 0%, transparent 60%);
            border-radius: 50%; pointer-events: none;
        }
        .cta-section .container-custom { position: relative; z-index: 2; }
        .cta-section h2 { font-size: 34px; font-weight: 800; color: var(--text-white); margin-bottom: 12px; }
        .cta-section p { color: rgba(255,255,255,0.8); font-size: 17px; max-width: 560px; margin: 0 auto 28px; }
        .cta-section .cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .cta-section .cta-btn-primary {
            background: var(--secondary); color: var(--text-white); padding: 14px 36px;
            border-radius: 50px; font-weight: 700; font-size: 16px; transition: var(--transition);
            display: inline-flex; align-items: center; gap: 8px;
        }
        .cta-section .cta-btn-primary:hover { background: var(--secondary-dark); color: var(--text-white); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(232,81,58,0.35); }
        .cta-section .cta-btn-outline {
            background: transparent; color: var(--text-white); padding: 14px 36px;
            border-radius: 50px; font-weight: 600; font-size: 16px; transition: var(--transition);
            border: 2px solid rgba(255,255,255,0.3); display: inline-flex; align-items: center; gap: 8px;
        }
        .cta-section .cta-btn-outline:hover { border-color: var(--text-white); background: rgba(255,255,255,0.08); color: var(--text-white); }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark); color: rgba(255,255,255,0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
            padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .footer-col h4 { font-size: 17px; font-weight: 700; color: var(--text-white); margin-bottom: 18px; }
        .footer-col p { font-size: 14px; line-height: 1.8; margin-bottom: 18px; color: rgba(255,255,255,0.6); }
        .footer-social { display: flex; gap: 12px; }
        .footer-social a {
            width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06);
            display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6);
            font-size: 18px; transition: var(--transition);
        }
        .footer-social a:hover { background: var(--secondary); color: var(--text-white); transform: translateY(-2px); }
        .footer-col ul li { margin-bottom: 8px; }
        .footer-col ul a { color: rgba(255,255,255,0.55); font-size: 14px; transition: var(--transition); }
        .footer-col ul a:hover { color: var(--secondary); padding-left: 4px; }
        .footer-bottom {
            display: flex; align-items: center; justify-content: space-between;
            padding: 24px 0; font-size: 13px; color: rgba(255,255,255,0.4);
            flex-wrap: wrap; gap: 12px;
        }
        .footer-bottom a { color: rgba(255,255,255,0.6); }
        .footer-bottom a:hover { color: var(--secondary); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hot-news-grid.featured { grid-template-columns: 1fr; }
            .hot-news-card.featured { flex-direction: column; }
            .hot-news-card.featured .card-img { width: 100%; min-height: 200px; }
            .hot-news-card.featured .card-body { width: 100%; padding: 24px; }
            .speed-grid { grid-template-columns: repeat(2, 1fr); }
            .cat-index-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            body { padding-top: 120px; }
            :root { --header-height: 120px; }
            .header-top { flex-wrap: wrap; padding: 10px 0; }
            .logo-text { font-size: 18px; }
            .logo-icon { width: 34px; height: 34px; font-size: 18px; }
            .search-box { max-width: 200px; }
            .search-box button span { display: none; }
            .search-box button { padding: 8px 14px; }
            .header-cta-btn { padding: 8px 16px; font-size: 13px; }
            .header-cta-btn span { display: none; }
            .nav-tab-item { padding: 8px 16px; font-size: 13px; }
            .page-hero { padding: 40px 0 36px; }
            .page-hero h1 { font-size: 28px; }
            .page-hero p { font-size: 15px; }
            .section-block { padding: 50px 0; }
            .section-title h2 { font-size: 26px; }
            .section-title { margin-bottom: 36px; }
            .hot-news-grid { gap: 20px; }
            .hot-news-card.featured .card-img { min-height: 180px; }
            .hot-news-card.featured h3 { font-size: 20px; }
            .speed-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .speed-item { padding: 20px 16px; }
            .speed-item .num { font-size: 32px; }
            .cat-index-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .trending-item .content h4 { font-size: 15px; }
            .faq-question { font-size: 14px; padding: 14px 18px; }
            .faq-answer { padding: 0 18px 14px; }
            .cta-section { padding: 50px 0; }
            .cta-section h2 { font-size: 26px; }
            .footer-grid { grid-template-columns: 1fr; gap: 30px; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .header-top { gap: 10px; }
            .search-box { max-width: 140px; }
            .search-box input { font-size: 12px; padding: 8px 0; }
            .search-box button { font-size: 11px; padding: 6px 12px; }
            .header-cta-btn { font-size: 12px; padding: 6px 14px; }
            .nav-tab-item { padding: 6px 12px; font-size: 12px; gap: 4px; }
            .page-hero h1 { font-size: 24px; }
            .speed-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .cat-index-grid { grid-template-columns: 1fr; }
            .hot-news-card .card-body { padding: 16px 18px 20px; }
            .hot-news-card h3 { font-size: 17px; }
            .container-custom { padding-left: 16px; padding-right: 16px; }
            .grid-container { padding-left: 16px; padding-right: 16px; }
        }

        /* ===== Utility ===== */
        .text-center { text-align: center; }
        .mt-1 { margin-top: 10px; }
        .mt-2 { margin-top: 20px; }
        .mb-2 { margin-bottom: 20px; }
        .gap-1 { gap: 10px; }
        .flex-center { display: flex; align-items: center; justify-content: center; }
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }