/* roulang page: index */
:root {
            --primary: #ff6d00;
            --primary-hover: #e65100;
            --primary-light: rgba(255,109,0,0.12);
            --accent: #ffab00;
            --bg: #0c0c1a;
            --surface: #161628;
            --surface-light: #1f1f38;
            --text: #f0f0f0;
            --text-secondary: #b0b0c0;
            --text-muted: #777788;
            --border: #2a2a3e;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 8px 24px rgba(0,0,0,0.4);
            --shadow-hover: 0 14px 32px rgba(0,0,0,0.6);
            --transition: 0.25s ease;
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1280px;
            --nav-height: 72px;
        }

        *,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-sans);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; }
        button { cursor: pointer; font-family: inherit; }
        ul { list-style: none; }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 32px;
        }

        /* 导航 */
        .header {
            background: rgba(12,12,26,0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255,255,255,0.06);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .nav-brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            border-bottom: 1px solid rgba(255,255,255,0.04);
        }

        .logo a {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(135deg, #ff8a5c, #ffaa00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.3px;
        }
        .logo span {
            font-weight: 500;
            color: var(--text-secondary);
            background: none;
            -webkit-text-fill-color: var(--text-secondary);
            margin-left: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        .search-trigger {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-size: 1.2rem;
            transition: color var(--transition);
        }
        .search-trigger:hover { color: var(--primary); }

        .channel-row {
            display: flex;
            align-items: center;
            gap: 36px;
            padding: 10px 0;
            overflow-x: auto;
            white-space: nowrap;
        }
        .channel-row a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding-bottom: 8px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition), border-color var(--transition);
        }
        .channel-row a:hover { color: var(--text); }
        .channel-row a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        /* 移动端菜单 */
        .mobile-menu-btn { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; }

        /* Hero */
        .hero {
            position: relative;
            padding: 110px 0 100px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            background-color: #0a0a14;
            text-align: center;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(12,12,26,0.75) 0%, rgba(12,12,26,0.92) 100%);
        }
        .hero .container { position: relative; z-index: 2; }
        .hero h1 {
            font-size: clamp(2.5rem, 8vw, 4rem);
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(to right, #ffffff, #ffaa5c);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 20px;
        }
        .hero p {
            font-size: 1.25rem;
            color: var(--text-secondary);
            max-width: 680px;
            margin: 0 auto 32px;
        }
        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all var(--transition);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 8px 22px rgba(255,109,0,0.3); }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.3);
            color: var(--text);
        }
        .btn-outline:hover { border-color: var(--primary); color: var(--primary); }

        /* 板块通用 */
        .section { padding: 90px 0; }
        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }
        .section-header h2 {
            font-size: 2.25rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }

        /* 核心说明 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 32px;
        }
        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 36px 28px;
            transition: transform var(--transition), box-shadow var(--transition);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255,109,0,0.25);
        }
        .feature-icon {
            font-size: 2.4rem;
            margin-bottom: 18px;
        }
        .feature-card h3 { font-size: 1.3rem; margin-bottom: 10px; }
        .feature-card p { color: var(--text-secondary); font-size: 0.95rem; }

        /* 分类入口卡片 */
        .category-entry {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            border: 1px solid var(--border);
        }
        .category-entry-img {
            flex: 1 1 280px;
            min-height: 220px;
            background: url('/assets/images/coverpic/cover-1.png') center/cover no-repeat;
        }
        .category-entry-content {
            flex: 1 1 320px;
            padding: 40px;
        }
        .category-entry-content h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .category-entry-content p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* CMS 文章列表 */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 28px;
        }
        .post-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            transition: all var(--transition);
        }
        .post-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 20px rgba(0,0,0,0.4);
        }
        .post-card a h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
            transition: color var(--transition);
        }
        .post-card a:hover h3 { color: var(--primary); }
        .post-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 16px;
        }
        .post-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .post-category {
            background: var(--primary-light);
            color: var(--primary);
            padding: 4px 10px;
            border-radius: 20px;
            font-weight: 500;
        }
        .empty-message {
            text-align: center;
            color: var(--text-muted);
            padding: 40px;
            background: var(--surface);
            border-radius: var(--radius);
        }

        /* 数据流程 */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            text-align: center;
        }
        .step-item {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 36px 20px;
            border: 1px solid var(--border);
        }
        .step-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 8px;
        }
        .step-item h4 { margin-bottom: 8px; }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border);
        }
        .faq-item h3 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-item p { color: var(--text-secondary); }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1c1c38 0%, #161628 100%);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            text-align: center;
            padding: 64px 32px;
        }
        .cta-section h2 { font-size: 2rem; margin-bottom: 12px; }
        .cta-section p { color: var(--text-secondary); margin-bottom: 28px; }

        /* 页脚 */
        .footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 32px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer-col p, .footer-col a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            display: block;
            margin-bottom: 8px;
            transition: color var(--transition);
        }
        .footer-col a:hover { color: var(--primary); }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom span { color: var(--primary); }

        /* 响应式 */
        @media (max-width: 1024px) {
            .container { padding: 0 20px; }
            .hero { padding: 80px 0 70px; }
            .section { padding: 70px 0; }
        }
        @media (max-width: 768px) {
            .channel-row { gap: 20px; }
            .hero h1 { font-size: 2.2rem; }
            .section-header h2 { font-size: 1.8rem; }
            .category-entry { flex-direction: column; }
            .category-entry-img { width: 100%; height: 200px; }
            .footer-bottom { flex-direction: column; gap: 10px; text-align: center; }
        }
        @media (max-width: 520px) {
            .nav-brand-row { flex-wrap: wrap; }
            .mobile-menu-btn { display: block; }
            .channel-row { display: none; } /* 简单处理，实际可加汉堡菜单展开 */
            .posts-grid { grid-template-columns: 1fr; }
            .steps-grid { grid-template-columns: 1fr; }
            .btn { padding: 10px 22px; font-size: 0.9rem; }
        }

/* roulang page: category1 */
:root {
            --primary: #6D28D9;
            --primary-dark: #5B21B6;
            --primary-light: #EDE9FE;
            --accent: #F43F5E;
            --accent-hover: #E11D48;
            --bg: #F9FAFB;
            --surface: #ffffff;
            --text: #1F2937;
            --text-secondary: #6B7280;
            --text-muted: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
            --radius-sm: 6px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --transition: 0.2s ease;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: inherit;
            text-decoration: none;
        }

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

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

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
        }

        .brand-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1rem;
            font-weight: 800;
        }

        .search-trigger {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 8px 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-muted);
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
        }

        .search-trigger:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .channel-row {
            display: flex;
            justify-content: flex-start;
            align-items: center;
            gap: 8px;
            padding: 12px 0;
            flex-wrap: wrap;
        }

        .channel-row a {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 50px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
        }

        .channel-row a:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary-light);
        }

        .channel-row a.active {
            background: var(--primary);
            color: white;
            font-weight: 600;
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        /* Mobile nav toggle */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text);
            cursor: pointer;
        }

        /* Category Hero */
        .category-hero {
            background: linear-gradient(135deg, rgba(109,40,217,0.05) 0%, rgba(244,63,94,0.03) 100%);
            padding: 60px 0 60px 0;
            border-bottom: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 70%;
            height: 200%;
            background: url('/assets/images/backpic/back-1.png') no-repeat center/cover;
            opacity: 0.06;
            z-index: 0;
            transform: rotate(5deg);
        }

        .category-hero .container {
            position: relative;
            z-index: 1;
        }

        .breadcrumb {
            display: flex;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: var(--primary);
            font-weight: 500;
        }

        .breadcrumb span {
            color: var(--text-muted);
        }

        .category-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .category-hero p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin-bottom: 24px;
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 32px;
        }

        .stat-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--text-secondary);
        }

        /* Subcategory cards */
        .section {
            padding: 64px 0;
        }

        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            margin-bottom: 36px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text);
        }

        .subcategory-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .subcategory-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .subcategory-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }

        .card-img {
            height: 180px;
            background: var(--border-light);
            overflow: hidden;
        }

        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

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

        .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 12px;
            align-self: flex-start;
        }

        .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .card-link {
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .card-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* Article list */
        .article-list {
            display: grid;
            gap: 16px;
        }

        .article-item {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }

        .article-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
        }

        .article-info h3 {
            font-size: 1.15rem;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .article-meta {
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .article-arrow {
            color: var(--primary);
            font-size: 1.2rem;
            opacity: 0.6;
            transition: var(--transition);
        }

        .article-item:hover .article-arrow {
            opacity: 1;
            transform: translateX(4px);
        }

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

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 20px 0;
            cursor: pointer;
        }

        .faq-question {
            font-weight: 600;
            font-size: 1.1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text);
        }

        .faq-toggle {
            font-size: 1.5rem;
            color: var(--primary);
            transition: var(--transition);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .faq-item.open .faq-answer {
            max-height: 200px;
            padding-top: 12px;
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #7C3AED 100%);
            padding: 64px 0;
            text-align: center;
            border-radius: var(--radius-xl);
            margin: 0 24px 64px;
            color: white;
        }

        .cta-section h2 {
            font-size: 2.2rem;
            margin-bottom: 16px;
            font-weight: 700;
        }

        .cta-section p {
            font-size: 1.1rem;
            opacity: 0.9;
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: white;
            color: var(--primary);
        }

        .btn-primary:hover {
            background: #F3F4F6;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.15);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid white;
            color: white;
        }

        .btn-outline:hover {
            background: rgba(255,255,255,0.15);
            transform: translateY(-2px);
        }

        /* Footer */
        .footer {
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer .container {
            max-width: 1200px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }

        .footer-col p, .footer-col a {
            display: block;
            font-size: 0.95rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-bottom span {
            font-weight: 600;
            color: var(--text-secondary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .brand-row {
                flex-wrap: wrap;
                gap: 12px;
            }
            .channel-row {
                gap: 4px;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding: 12px 0 12px 0;
                -webkit-overflow-scrolling: touch;
            }
            .channel-row a {
                white-space: nowrap;
                flex-shrink: 0;
                font-size: 0.85rem;
                padding: 6px 14px;
            }
            .category-hero {
                padding: 40px 0;
            }
            .category-hero h1 {
                font-size: 1.8rem;
            }
            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
            .subcategory-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                margin: 0 16px 40px;
                padding: 48px 16px;
            }
            .cta-section h2 {
                font-size: 1.6rem;
            }
            .article-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.25rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .search-trigger {
                font-size: 0.8rem;
                padding: 6px 12px;
            }
        }

        /* Utility */
        .text-accent {
            color: var(--accent);
        }
        .bg-light {
            background: var(--primary-light);
        }
        .mt-0 { margin-top: 0; }
        .mb-0 { margin-bottom: 0; }

/* roulang page: article */
:root {
            --primary: #D4A843;
            --primary-hover: #C0932C;
            --primary-light: rgba(212, 168, 67, 0.12);
            --accent: #2B3A7A;
            --dark: #0D111C;
            --dark-2: #151C28;
            --text: #1A1F2E;
            --text-secondary: #5F687C;
            --text-light: #8B93A7;
            --bg: #F5F6FA;
            --card-bg: #ffffff;
            --border: #E3E6EF;
            --radius: 14px;
            --radius-sm: 10px;
            --shadow: 0 8px 24px rgba(15, 19, 30, 0.06);
            --shadow-lg: 0 20px 40px rgba(15, 19, 30, 0.10);
            --transition: 0.25s ease;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --max-width: 1140px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button, .btn {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: var(--transition);
        }

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

        /* Header */
        .site-header {
            background: var(--dark);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 18px rgba(0,0,0,0.15);
        }
        .brand-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .logo {
            font-size: 1.7rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            color: #ffffff;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .logo span {
            color: var(--primary);
            font-weight: 800;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 18px;
        }
        .channel-row {
            display: flex;
            align-items: center;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .channel-row::-webkit-scrollbar {
            display: none;
        }
        .channel-row a {
            display: inline-flex;
            align-items: center;
            padding: 14px 20px;
            font-size: 0.95rem;
            font-weight: 500;
            color: rgba(255,255,255,0.8);
            border-bottom: 3px solid transparent;
            white-space: nowrap;
            letter-spacing: 0.2px;
            transition: color 0.2s, border-color 0.2s;
        }
        .channel-row a:hover,
        .channel-row a.active {
            color: #ffffff;
            border-bottom-color: var(--primary);
        }

        /* Article Banner */
        .article-banner {
            background-size: cover;
            background-position: center 30%;
            background-repeat: no-repeat;
            padding: 90px 0 70px;
            position: relative;
            color: #fff;
            background-color: #0a0f1a;
        }
        .article-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0,0,0,0.65) 0%, rgba(13,17,28,0.85) 100%);
        }
        .article-banner .container {
            position: relative;
            z-index: 2;
        }
        .article-meta {
            display: flex;
            gap: 18px;
            align-items: center;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }
        .article-category {
            background: var(--primary);
            color: #0D111C;
            padding: 5px 16px;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.3px;
        }
        .article-date {
            color: rgba(255,255,255,0.75);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-title {
            font-size: 2.4rem;
            font-weight: 700;
            line-height: 1.3;
            max-width: 800px;
            text-shadow: 0 4px 16px rgba(0,0,0,0.5);
        }

        /* Article content */
        .article-content-section {
            padding: 56px 0 70px;
        }
        .article-body {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 48px 44px;
            box-shadow: var(--shadow);
            font-size: 1.08rem;
            line-height: 1.85;
            color: #2A3040;
            max-width: 820px;
            margin: 0 auto;
        }
        .article-body h2 {
            font-size: 1.7rem;
            margin: 2em 0 0.8em;
            color: #111622;
            font-weight: 700;
        }
        .article-body h3 {
            font-size: 1.35rem;
            margin: 1.6em 0 0.7em;
            color: #1F2638;
        }
        .article-body p {
            margin-bottom: 1.3em;
        }
        .article-body img {
            border-radius: var(--radius-sm);
            margin: 28px 0;
            box-shadow: var(--shadow);
        }
        .article-body ul, .article-body ol {
            padding-left: 1.8em;
            margin: 1.2em 0;
        }
        .article-body li {
            margin-bottom: 0.6em;
        }
        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #FCFAF5;
            padding: 20px 28px;
            margin: 2em 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: #4A3F2B;
        }
        .article-footer-actions {
            display: flex;
            justify-content: center;
            margin-top: 48px;
        }

        /* 错误状态 */
        .error-section {
            padding: 100px 0;
            text-align: center;
            background: #fff;
        }
        .error-section h1 {
            font-size: 2.4rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .error-section p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 36px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 30px;
            border-radius: 40px;
            font-weight: 600;
            letter-spacing: 0.3px;
            font-size: 0.95rem;
            transition: all 0.3s;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.04);
        }
        .btn-primary {
            background: var(--primary);
            color: #0D111C;
            border: 1px solid var(--primary);
        }
        .btn-primary:hover {
            background: #D6AE50;
            border-color: #D6AE50;
            box-shadow: 0 10px 22px rgba(212,168,67,0.35);
            transform: translateY(-1px);
        }

        /* Footer */
        .footer {
            background: var(--dark);
            color: #B0B8C5;
            padding: 60px 0 28px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 44px;
        }
        .footer-col h4 {
            color: #ffffff;
            font-weight: 600;
            font-size: 1.08rem;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            color: #9EA8BB;
            margin-bottom: 10px;
            font-size: 0.93rem;
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-col p {
            font-size: 0.9rem;
            margin-bottom: 8px;
            color: #8B94A6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 22px;
            text-align: center;
            font-size: 0.85rem;
            color: #737D8E;
        }
        .footer-bottom span {
            color: var(--primary);
            font-weight: 600;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-title {
                font-size: 2rem;
            }
            .article-body {
                padding: 36px 32px;
            }
        }
        @media (max-width: 768px) {
            .brand-row {
                flex-wrap: wrap;
                gap: 12px;
            }
            .channel-row {
                justify-content: flex-start;
            }
            .article-banner {
                padding: 60px 0 50px;
            }
            .article-title {
                font-size: 1.8rem;
            }
            .article-body {
                padding: 32px 22px;
                border-radius: var(--radius-sm);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 1.3rem;
            }
            .channel-row a {
                padding: 12px 14px;
                font-size: 0.85rem;
            }
            .article-banner {
                padding: 50px 0 40px;
            }
            .article-title {
                font-size: 1.5rem;
            }
            .article-category {
                font-size: 0.8rem;
                padding: 4px 14px;
            }
        }