/* roulang page: index */
@import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,400..700&display=swap');
        :root {
            --primary: #e60012;
            --primary-dark: #b8000f;
            --secondary: #1e2b4f;
            --accent: #f0b90b;
            --dark-bg: #0f172a;
            --card-bg: #ffffff;
            --soft-gray: #f4f6f9;
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border-light: #e2e8f0;
            --radius: 0.75rem;
            --radius-xl: 1.5rem;
            --radius-2xl: 2rem;
            --shadow-card: 0 10px 30px -10px rgba(0,0,0,0.08);
            --shadow-btn: 0 4px 12px rgba(230,0,18,0.35);
            --shadow-header: 0 2px 15px rgba(0,0,0,0.05);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, sans-serif;
            color: var(--text-main);
            background: #f9fafc;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input {
            font-family: inherit;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        /* 导航 */
        header {
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 50;
            box-shadow: var(--shadow-header);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            letter-spacing: -0.5px;
        }
        .logo span {
            color: var(--primary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        .nav-links a {
            font-weight: 500;
            color: var(--text-muted);
            position: relative;
            padding-bottom: 4px;
        }
        .nav-links a.active,
        .nav-links a:hover {
            color: var(--primary);
        }
        .nav-links a.active::after {
            content: "";
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .nav-cta {
            background: var(--primary);
            color: white;
            padding: 0.6rem 1.8rem;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: var(--shadow-btn);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .nav-cta:hover {
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(230,0,18,0.45);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.6rem;
            color: var(--secondary);
        }
        @media (max-width: 1024px) {
            .nav-links a:not(.nav-cta) { display: none; }
            .mobile-toggle { display: block; }
            .nav-container { height: 64px; }
        }
        /* 移动菜单 */
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: white;
            padding: 1rem 1.5rem;
            gap: 1rem;
            border-top: 1px solid var(--border-light);
        }
        .mobile-menu.active {
            display: flex;
        }
        .mobile-menu a {
            font-weight: 500;
            padding: 0.5rem 0;
        }
        /* Hero */
        .hero {
            background: linear-gradient(135deg, rgba(15,23,42,0.75) 0%, rgba(15,23,42,0.5) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 6rem 0;
            color: white;
            border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
        }
        .hero-content {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.2;
            margin-bottom: 1.5rem;
        }
        .hero h1 span {
            color: var(--accent);
        }
        .hero p {
            font-size: 1.2rem;
            color: rgba(255,255,255,0.85);
            margin-bottom: 2.5rem;
        }
        .hero-btn {
            background: var(--accent);
            color: var(--secondary);
            font-weight: 700;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            display: inline-block;
            box-shadow: 0 12px 25px rgba(240,185,11,0.45);
            transition: transform 0.2s, box-shadow 0.2s;
        }
        .hero-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 18px 35px rgba(240,185,11,0.6);
        }
        /* 板块通用 */
        section {
            padding: 5rem 0;
        }
        .section-title {
            text-align: center;
            font-size: 2.3rem;
            font-weight: 700;
            margin-bottom: 3rem;
            color: var(--secondary);
        }
        /* 亮点卡片 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
        }
        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 2rem;
            box-shadow: var(--shadow-card);
            transition: transform 0.25s;
            border: 1px solid var(--border-light);
        }
        .feature-card:hover {
            transform: translateY(-6px);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            background: rgba(230,0,18,0.08);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 1.5rem;
        }
        /* 分类入口 */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 2rem;
        }
        .category-card {
            position: relative;
            border-radius: var(--radius-xl);
            overflow: hidden;
            aspect-ratio: 16/10;
            display: flex;
            align-items: flex-end;
            padding: 2rem;
            color: white;
            background-size: cover;
            background-position: center;
        }
        .category-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, transparent 60%);
        }
        .category-card-content {
            position: relative;
            z-index: 2;
        }
        .category-card h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        /* CMS列表 */
        .post-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
        }
        .post-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: transform 0.2s;
            border: 1px solid var(--border-light);
        }
        .post-card:hover {
            transform: translateY(-5px);
        }
        .post-card img {
            height: 200px;
            object-fit: cover;
            width: 100%;
        }
        .post-card-body {
            padding: 1.5rem;
        }
        .post-tag {
            background: rgba(230,0,18,0.1);
            color: var(--primary);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.25rem 0.8rem;
            border-radius: 50px;
            display: inline-block;
            margin-bottom: 0.8rem;
        }
        .post-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .post-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 1rem;
            line-height: 1.5;
        }
        .post-meta {
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        /* 数据展示 */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }
        .stat-item {
            background: var(--card-bg);
            padding: 2.5rem 1rem;
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius);
            padding: 1.8rem;
            margin-bottom: 1.5rem;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.8rem;
            color: var(--secondary);
        }
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            background-blend-mode: overlay;
            border-radius: var(--radius-2xl);
            text-align: center;
            padding: 5rem 2rem;
            color: white;
        }
        .cta-section h2 {
            font-size: 2.3rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .cta-btn {
            background: white;
            color: var(--primary);
            font-weight: 700;
            padding: 0.9rem 2.2rem;
            border-radius: 50px;
            display: inline-block;
            margin-top: 2rem;
            box-shadow: 0 8px 20px rgba(0,0,0,0.25);
            transition: background 0.2s;
        }
        .cta-btn:hover {
            background: #fef9c3;
        }
        /* 页脚 */
        footer {
            background: var(--dark-bg);
            color: rgba(255,255,255,0.7);
            padding: 3rem 0 2rem;
            margin-top: 5rem;
        }
        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-links a {
            margin-right: 1.5rem;
            font-size: 0.95rem;
            color: rgba(255,255,255,0.7);
        }
        .footer-links a:hover {
            color: white;
        }
        .copyright {
            text-align: center;
            font-size: 0.9rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 1.5rem;
        }
        @media (max-width: 768px) {
            .hero h1 { font-size: 2.2rem; }
            .hero { padding: 4rem 0; border-radius: 0 0 1.5rem 1.5rem; }
            section { padding: 3rem 0; }
            .category-grid { grid-template-columns: 1fr; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .post-grid { grid-template-columns: 1fr; }
            .nav-container { padding: 0 1rem; }
        }
        @media (max-width: 520px) {
            .hero h1 { font-size: 1.8rem; }
            .hero p { font-size: 1rem; }
            .stats-grid { grid-template-columns: 1fr 1fr; }
        }

/* roulang page: category1 */
/* ========== DESIGN SYSTEM ========== */
        :root {
            --primary: #1a56db;
            --primary-dark: #1347b8;
            --primary-light: #3b82f6;
            --accent: #f59e0b;
            --accent-dark: #d97706;
            --surface: #f8fafc;
            --surface-alt: #f1f5f9;
            --text-main: #1e293b;
            --text-soft: #64748b;
            --text-muted: #94a3b8;
            --border-soft: #e2e8f0;
            --border-medium: #cbd5e1;
            --card-bg: #ffffff;
            --footer-bg: #0f172a;
            --radius-card: 14px;
            --radius-btn: 10px;
            --radius-tag: 20px;
            --radius-img: 10px;
            --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 10px 25px rgba(0,0,0,0.1), 0 4px 10px rgba(0,0,0,0.06);
            --shadow-nav: 0 1px 3px rgba(0,0,0,0.05);
            --transition-fast: 180ms ease;
            --transition-smooth: 280ms cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        body {
            margin: 0;
            padding: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-main);
            background-color: var(--surface);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

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

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

        /* ========== HEADER & NAVIGATION ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-soft);
            box-shadow: var(--shadow-nav);
            transition: box-shadow var(--transition-smooth);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
        }

        .logo-link {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: -0.3px;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .logo-link:hover {
            opacity: 0.85;
        }
        .logo-link .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .logo-link .logo-accent {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 9px 17px;
            border-radius: 8px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-soft);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--text-main);
            background: var(--surface-alt);
        }
        .nav-links a.active {
            color: var(--primary);
            background: #eff6ff;
            font-weight: 600;
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--primary);
            border-radius: 3px;
            opacity: 0;
            transition: opacity var(--transition-fast);
        }
        .nav-links a.active:hover::after {
            opacity: 1;
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
            color: #fff !important;
            font-weight: 600 !important;
            padding: 10px 20px !important;
            border-radius: var(--radius-btn) !important;
            box-shadow: var(--shadow-btn);
            transition: all var(--transition-smooth) !important;
            margin-left: 4px;
        }
        .nav-cta:hover {
            box-shadow: var(--shadow-btn-hover) !important;
            transform: translateY(-2px);
            background: linear-gradient(135deg, var(--primary-dark), var(--primary)) !important;
        }
        .nav-cta:active {
            transform: translateY(0);
            box-shadow: var(--shadow-btn) !important;
        }

        /* Mobile nav toggle */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-fast);
        }
        .mobile-toggle:hover {
            background: var(--surface-alt);
        }

        /* ========== BREADCRUMB ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.875rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            padding: 0;
            margin: 0;
            list-style: none;
        }
        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb a {
            color: var(--text-soft);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border-medium);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--text-main);
            font-weight: 500;
        }

        /* ========== BANNER ========== */
        .category-banner {
            position: relative;
            padding: 56px 0 48px;
            background: linear-gradient(160deg, #0f172a 0%, #1e3a5f 40%, #1a4b8c 100%);
            overflow: hidden;
        }
        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center 35%;
            opacity: 0.22;
            z-index: 1;
        }
        .category-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--surface) 0%, transparent 100%);
            z-index: 2;
        }
        .category-banner .banner-content {
            position: relative;
            z-index: 3;
        }

        /* ========== CARDS ========== */
        .article-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid transparent;
        }
        .article-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--border-soft);
        }
        .article-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--surface-alt);
        }
        .article-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }
        .article-card:hover .card-img-wrap img {
            transform: scale(1.06);
        }
        .article-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-tag);
            z-index: 2;
            letter-spacing: 0.3px;
        }
        .article-card .card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .article-card .card-title {
            font-size: 1.08rem;
            font-weight: 600;
            line-height: 1.45;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition-fast);
        }
        .article-card:hover .card-title {
            color: var(--primary);
        }
        .article-card .card-excerpt {
            font-size: 0.875rem;
            color: var(--text-soft);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .article-card .card-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: 4px;
        }
        .article-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* ========== SIDEBAR ========== */
        .sidebar-card {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 22px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
        }
        .sidebar-card h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin: 0 0 16px;
            color: var(--text-main);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-card h3::before {
            content: '';
            width: 4px;
            height: 20px;
            background: var(--primary);
            border-radius: 3px;
            flex-shrink: 0;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag-item {
            display: inline-block;
            padding: 6px 14px;
            font-size: 0.82rem;
            font-weight: 500;
            border-radius: var(--radius-tag);
            background: var(--surface-alt);
            color: var(--text-soft);
            transition: all var(--transition-fast);
            cursor: pointer;
            border: 1px solid transparent;
        }
        .tag-item:hover {
            background: #eff6ff;
            color: var(--primary);
            border-color: #bfdbfe;
        }
        .tag-item.hot {
            background: #fef3c7;
            color: #b45309;
            font-weight: 600;
            border-color: #fde68a;
        }
        .tag-item.hot:hover {
            background: #fde68a;
            color: #92400e;
        }

        .sidebar-article-mini {
            display: flex;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-soft);
            transition: all var(--transition-fast);
            cursor: pointer;
        }
        .sidebar-article-mini:last-child {
            border-bottom: none;
        }
        .sidebar-article-mini:hover {
            opacity: 0.8;
        }
        .sidebar-article-mini .mini-img {
            width: 72px;
            height: 54px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--surface-alt);
        }
        .sidebar-article-mini .mini-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .sidebar-article-mini .mini-info {
            flex: 1;
            min-width: 0;
        }
        .sidebar-article-mini .mini-title {
            font-size: 0.85rem;
            font-weight: 500;
            line-height: 1.4;
            color: var(--text-main);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .sidebar-article-mini .mini-date {
            font-size: 0.75rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        .search-box {
            display: flex;
            gap: 0;
            border: 1.5px solid var(--border-soft);
            border-radius: var(--radius-btn);
            overflow: hidden;
            transition: border-color var(--transition-fast);
        }
        .search-box:focus-within {
            border-color: var(--primary);
        }
        .search-box input {
            flex: 1;
            border: none;
            padding: 11px 16px;
            font-size: 0.9rem;
            background: transparent;
            color: var(--text-main);
            min-width: 0;
        }
        .search-box input::placeholder {
            color: var(--text-muted);
        }
        .search-box input:focus {
            outline: none;
        }
        .search-box button {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 11px 18px;
            cursor: pointer;
            font-size: 0.95rem;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }
        .search-box button:hover {
            background: var(--primary-dark);
        }

        /* ========== STATS ROW ========== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .stat-item {
            background: var(--card-bg);
            border-radius: var(--radius-card);
            padding: 22px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-soft);
            transition: all var(--transition-fast);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .stat-item .stat-num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .stat-label {
            font-size: 0.85rem;
            color: var(--text-soft);
            margin-top: 6px;
        }

        /* ========== CTA SECTION ========== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #1a4b8c 100%);
            border-radius: var(--radius-card);
            padding: 44px 36px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 1;
        }
        .cta-section>* {
            position: relative;
            z-index: 2;
        }

        /* ========== PAGINATION ========== */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            flex-wrap: wrap;
        }
        .pagination .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            font-weight: 500;
            font-size: 0.9rem;
            background: var(--card-bg);
            border: 1px solid var(--border-soft);
            color: var(--text-soft);
            cursor: pointer;
            transition: all var(--transition-fast);
        }
        .pagination .page-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #eff6ff;
        }
        .pagination .page-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: var(--shadow-btn);
        }
        .pagination .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--footer-bg);
            color: #cbd5e1;
            padding: 44px 0 0;
            margin-top: auto;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            flex-wrap: wrap;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        .footer-links a {
            color: #94a3b8;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .copyright {
            text-align: center;
            padding: 18px 0;
            font-size: 0.8rem;
            color: #64748b;
        }
        .logo-footer {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }
        .logo-footer span {
            color: #60a5fa;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-banner {
                padding: 40px 0 36px;
            }
            .article-card .card-title {
                font-size: 1rem;
            }
            .article-card .card-body {
                padding: 14px 16px 16px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 10px 0;
            }
            .nav-links a {
                padding: 7px 12px;
                font-size: 0.85rem;
                border-radius: 6px;
            }
            .nav-cta {
                padding: 8px 15px !important;
                font-size: 0.85rem !important;
            }
            .logo-link {
                font-size: 1.15rem;
            }
            .logo-link .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
                border-radius: 8px;
            }
            .category-banner {
                padding: 32px 0 28px;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 10px;
            }
            .stat-item {
                padding: 16px 12px;
            }
            .stat-item .stat-num {
                font-size: 1.5rem;
            }
            .article-card .card-img-wrap {
                aspect-ratio: 16 / 9;
            }
            .cta-section {
                padding: 30px 20px;
            }
            .footer-content {
                flex-direction: column;
                gap: 20px;
            }
            .pagination .page-btn {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
                border-radius: 8px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                flex-wrap: wrap;
                gap: 8px;
            }
            .nav-links {
                width: 100%;
                justify-content: space-between;
                gap: 2px;
            }
            .nav-links a {
                padding: 6px 10px;
                font-size: 0.8rem;
                border-radius: 6px;
            }
            .nav-cta {
                padding: 7px 12px !important;
                font-size: 0.8rem !important;
                margin-left: 2px;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-links.collapsed {
                display: none;
            }
            .nav-links.expanded {
                display: flex;
                flex-direction: column;
                width: 100%;
                background: #fff;
                border-radius: 12px;
                padding: 8px;
                box-shadow: var(--shadow-card-hover);
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                z-index: 999;
            }
            .nav-links.expanded a {
                width: 100%;
                justify-content: center;
                padding: 10px;
                border-radius: 8px;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }
            .stat-item .stat-num {
                font-size: 1.3rem;
            }
            .stat-item .stat-label {
                font-size: 0.75rem;
            }
            .category-banner h1 {
                font-size: 1.35rem;
            }
            .article-card .card-title {
                font-size: 0.95rem;
            }
            .sidebar-card {
                padding: 16px;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #1a56db;
            --color-primary-hover: #1e40af;
            --color-primary-light: #eff4ff;
            --color-accent: #f97316;
            --color-accent-hover: #ea580c;
            --color-accent-light: #fff7ed;
            --color-red: #ef4444;
            --color-bg: #f8fafc;
            --color-surface: #ffffff;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-weak: #64748b;
            --color-text-muted: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
            --color-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
            --color-shadow-md: 0 6px 20px rgba(15, 23, 42, 0.10);
            --color-shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
            --color-shadow-xl: 0 20px 48px rgba(15, 23, 42, 0.15);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --radius-xl: 24px;
            --radius-full: 9999px;
            --font-xs: 0.75rem;
            --font-sm: 0.85rem;
            --font-base: 1rem;
            --font-md: 1.08rem;
            --font-lg: 1.25rem;
            --font-xl: 1.5rem;
            --font-2xl: 1.875rem;
            --font-3xl: 2.25rem;
            --font-4xl: 2.75rem;
            --spacing-xs: 0.5rem;
            --spacing-sm: 0.75rem;
            --spacing: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2rem;
            --spacing-xl: 3rem;
            --spacing-2xl: 4rem;
            --spacing-3xl: 5rem;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Noto Sans SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: var(--font-base);
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 var(--spacing);
            }
        }

        /* ========== 阅读进度条 ========== */
        .reading-progress {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
            z-index: 10001;
            transition: width 0.1s linear;
            width: 0%;
            border-radius: 0 2px 2px 0;
        }

        /* ========== Header & Nav ========== */
        .site-header {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--color-shadow-sm);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 64px;
            gap: var(--spacing-lg);
        }
        .logo {
            font-size: var(--font-xl);
            font-weight: 800;
            color: var(--color-text-strong);
            white-space: nowrap;
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 2px;
        }
        .logo span {
            color: var(--color-primary);
        }
        .logo .logo-dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            background: var(--color-accent);
            border-radius: 50%;
            margin-left: 2px;
            animation: pulse-dot 2s infinite;
        }
        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 0.55rem 1.1rem;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: var(--font-sm);
            color: var(--color-text-weak);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }
        .nav-links a.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 700;
        }
        .nav-links .nav-cta {
            background: var(--color-primary);
            color: #fff !important;
            font-weight: 700;
            padding: 0.6rem 1.4rem;
            border-radius: var(--radius-full);
            transition: all var(--transition);
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
            gap: 0.35rem;
        }
        .nav-links .nav-cta:hover {
            background: var(--color-primary-hover);
            box-shadow: 0 4px 16px rgba(26, 86, 219, 0.45);
            transform: translateY(-1px);
        }
        .mobile-menu-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--color-text);
            padding: 0.5rem;
            border-radius: var(--radius);
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--color-surface);
                flex-direction: column;
                padding: var(--spacing-md);
                gap: var(--spacing-xs);
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--color-shadow-md);
                transform: translateY(-120%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition);
                z-index: 999;
            }
            .nav-links.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav-links a {
                width: 100%;
                justify-content: center;
                padding: 0.7rem 1rem;
                border-radius: var(--radius);
            }
            .nav-links .nav-cta {
                margin-top: var(--spacing-xs);
                border-radius: var(--radius);
            }
            .mobile-menu-toggle {
                display: block;
            }
            .header-inner {
                height: 58px;
            }
        }

        /* ========== 面包屑 ========== */
        .breadcrumb-wrap {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: var(--spacing-sm) 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: var(--font-sm);
            color: var(--color-text-weak);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-weak);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .separator {
            color: var(--color-text-muted);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 600;
            max-width: 320px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== Main Layout ========== */
        .main-content {
            flex: 1;
            padding: var(--spacing-xl) 0 var(--spacing-2xl);
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: var(--spacing-xl);
            align-items: start;
        }
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
        }

        /* ========== 文章主体 ========== */
        .article-main {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            overflow: hidden;
        }
        .article-header {
            padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
        }
        @media (max-width: 768px) {
            .article-header {
                padding: var(--spacing-lg) var(--spacing-md);
            }
        }
        .article-category-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-size: var(--font-xs);
            font-weight: 700;
            padding: 0.35rem 0.85rem;
            border-radius: var(--radius-full);
            margin-bottom: var(--spacing);
            letter-spacing: 0.02em;
            text-transform: uppercase;
        }
        .article-category-tag::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--color-primary);
            border-radius: 50%;
        }
        .article-title {
            font-size: var(--font-3xl);
            font-weight: 800;
            color: var(--color-text-strong);
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: var(--spacing);
        }
        @media (max-width: 768px) {
            .article-title {
                font-size: var(--font-2xl);
            }
        }
        @media (max-width: 520px) {
            .article-title {
                font-size: var(--font-xl);
            }
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            font-size: var(--font-sm);
            color: var(--color-text-weak);
            padding-bottom: var(--spacing);
            border-bottom: 1px solid var(--color-border-light);
        }
        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
        }
        .article-meta-item i {
            font-size: 0.85em;
            color: var(--color-text-muted);
        }
        .article-featured-image {
            position: relative;
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--color-border-light);
        }
        .article-featured-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .article-featured-image:hover img {
            transform: scale(1.03);
        }
        .article-body {
            padding: var(--spacing-xl);
            font-size: var(--font-md);
            line-height: 1.9;
            color: var(--color-text);
        }
        @media (max-width: 768px) {
            .article-body {
                padding: var(--spacing-lg) var(--spacing-md);
                font-size: var(--font-base);
            }
        }
        .article-body h1,
        .article-body h2,
        .article-body h3,
        .article-body h4 {
            color: var(--color-text-strong);
            font-weight: 700;
            margin: 1.8em 0 0.7em;
            line-height: 1.35;
            letter-spacing: -0.01em;
        }
        .article-body h2 {
            font-size: var(--font-2xl);
            border-left: 4px solid var(--color-primary);
            padding-left: var(--spacing);
        }
        .article-body h3 {
            font-size: var(--font-xl);
        }
        .article-body h4 {
            font-size: var(--font-lg);
        }
        .article-body p {
            margin-bottom: 1.1em;
        }
        .article-body ul,
        .article-body ol {
            margin: 1em 0;
            padding-left: 1.8em;
        }
        .article-body ul {
            list-style: disc;
        }
        .article-body ol {
            list-style: decimal;
        }
        .article-body li {
            margin-bottom: 0.45em;
        }
        .article-body blockquote {
            margin: 1.5em 0;
            padding: var(--spacing-md) var(--spacing-lg);
            background: var(--color-primary-light);
            border-left: 4px solid var(--color-primary);
            border-radius: 0 var(--radius) var(--radius) 0;
            color: var(--color-text);
            font-style: italic;
        }
        .article-body code {
            background: #f1f5f9;
            padding: 0.15em 0.45em;
            border-radius: 4px;
            font-size: 0.9em;
            color: var(--color-accent);
            font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
        }
        .article-body pre {
            background: #1e293b;
            color: #e2e8f0;
            padding: var(--spacing-lg);
            border-radius: var(--radius);
            overflow-x: auto;
            margin: 1.5em 0;
            font-size: var(--font-sm);
            line-height: 1.6;
        }
        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 1.5em auto;
            box-shadow: var(--color-shadow);
        }
        .article-body a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 3px;
            text-decoration-thickness: 1px;
        }
        .article-body a:hover {
            color: var(--color-primary-hover);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5em 0;
            font-size: var(--font-sm);
        }
        .article-body table th,
        .article-body table td {
            border: 1px solid var(--color-border);
            padding: 0.6em 0.9em;
            text-align: left;
        }
        .article-body table th {
            background: var(--color-primary-light);
            font-weight: 700;
            color: var(--color-text-strong);
        }

        /* 文章底部标签与分享 */
        .article-footer-meta {
            padding: 0 var(--spacing-xl) var(--spacing-xl);
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing);
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--color-border-light);
            margin: 0 var(--spacing-xl);
        }
        @media (max-width: 768px) {
            .article-footer-meta {
                margin: 0 var(--spacing-md);
                padding: 0 0 var(--spacing-lg);
                flex-direction: column;
                align-items: flex-start;
            }
        }
        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .article-tag {
            display: inline-block;
            background: var(--color-border-light);
            color: var(--color-text-weak);
            font-size: var(--font-xs);
            padding: 0.3rem 0.75rem;
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
        }
        .article-tag:hover {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .share-buttons {
            display: flex;
            gap: 0.5rem;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: var(--color-border-light);
            color: var(--color-text-weak);
            font-size: var(--font-sm);
            transition: all var(--transition-fast);
        }
        .share-btn:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--color-shadow);
        }

        /* ========== 内容未找到状态 ========== */
        .not-found-state {
            text-align: center;
            padding: var(--spacing-3xl) var(--spacing-xl);
        }
        .not-found-icon {
            font-size: 4rem;
            color: var(--color-text-muted);
            margin-bottom: var(--spacing-lg);
        }
        .not-found-state h2 {
            font-size: var(--font-2xl);
            color: var(--color-text-strong);
            margin-bottom: var(--spacing-sm);
        }
        .not-found-state p {
            color: var(--color-text-weak);
            margin-bottom: var(--spacing-lg);
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-weight: 700;
            font-size: var(--font-sm);
            padding: 0.7rem 1.5rem;
            border-radius: var(--radius-full);
            transition: all var(--transition);
            text-decoration: none;
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
        }
        .btn-primary:hover {
            background: var(--color-primary-hover);
            color: #fff;
            box-shadow: 0 6px 20px rgba(26, 86, 219, 0.4);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(249, 115, 22, 0.3);
        }
        .btn-accent:hover {
            background: var(--color-accent-hover);
            color: #fff;
            box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
            transform: translateY(-2px);
        }

        /* ========== 相关文章 ========== */
        .related-section {
            margin-top: var(--spacing-xl);
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            padding: var(--spacing-xl);
        }
        .related-section h3 {
            font-size: var(--font-xl);
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: var(--spacing-lg);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .related-section h3::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--color-border);
            margin-left: 0.5rem;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing);
        }
        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
            .related-section {
                padding: var(--spacing-lg) var(--spacing-md);
            }
        }
        .related-card {
            display: flex;
            gap: var(--spacing);
            padding: var(--spacing);
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            cursor: pointer;
        }
        .related-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--color-shadow-md);
            transform: translateY(-2px);
        }
        .related-card-img {
            width: 100px;
            height: 70px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--color-border-light);
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .related-card-info {
            flex: 1;
            min-width: 0;
        }
        .related-card-info h4 {
            font-size: var(--font-sm);
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 0.3rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.4;
        }
        .related-card-info .related-date {
            font-size: var(--font-xs);
            color: var(--color-text-muted);
        }

        /* ========== 侧边栏 ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
            position: sticky;
            top: 80px;
        }
        @media (max-width: 1024px) {
            .sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing);
            }
        }
        @media (max-width: 520px) {
            .sidebar {
                grid-template-columns: 1fr;
            }
        }
        .sidebar-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            padding: var(--spacing-lg);
        }
        .sidebar-card h4 {
            font-size: var(--font-lg);
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: var(--spacing);
            padding-bottom: var(--spacing-sm);
            border-bottom: 2px solid var(--color-primary);
            display: inline-block;
        }
        .sidebar-list {
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }
        .sidebar-list-item {
            display: flex;
            align-items: flex-start;
            gap: 0.6rem;
            padding: 0.55rem 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            cursor: pointer;
            font-size: var(--font-sm);
            color: var(--color-text);
            line-height: 1.45;
        }
        .sidebar-list-item:last-child {
            border-bottom: none;
        }
        .sidebar-list-item:hover {
            color: var(--color-primary);
        }
        .sidebar-list-item .list-number {
            font-weight: 800;
            color: var(--color-primary);
            font-size: var(--font-lg);
            line-height: 1;
            flex-shrink: 0;
            min-width: 24px;
        }
        .sidebar-cta-card {
            background: linear-gradient(135deg, var(--color-primary) 0%, #3b82f6 50%, var(--color-accent) 100%);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            color: #fff;
            text-align: center;
            box-shadow: var(--color-shadow-md);
        }
        .sidebar-cta-card h4 {
            font-size: var(--font-lg);
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            color: #fff;
            border: none;
        }
        .sidebar-cta-card p {
            font-size: var(--font-sm);
            opacity: 0.9;
            margin-bottom: var(--spacing);
        }
        .sidebar-cta-card .btn {
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            box-shadow: none;
        }
        .sidebar-cta-card .btn:hover {
            background: #f0f7ff;
            color: var(--color-primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #1a56db 100%);
            padding: var(--spacing-3xl) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 30% 50%, rgba(249, 115, 22, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 70% 30%, rgba(59, 130, 246, 0.06) 0%, transparent 50%);
            pointer-events: none;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: var(--font-3xl);
            font-weight: 800;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.02em;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: var(--font-md);
            margin-bottom: var(--spacing-lg);
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-buttons {
            display: flex;
            gap: var(--spacing);
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-buttons .btn-accent {
            padding: 0.8rem 2rem;
            font-size: var(--font-base);
            border-radius: var(--radius-full);
        }
        .cta-buttons .btn-outline-light {
            padding: 0.8rem 2rem;
            font-size: var(--font-base);
            border-radius: var(--radius-full);
            border: 2px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            background: transparent;
            font-weight: 700;
            transition: all var(--transition);
        }
        .cta-buttons .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .cta-section h2 {
                font-size: var(--font-2xl);
            }
            .cta-section p {
                font-size: var(--font-base);
            }
            .cta-section {
                padding: var(--spacing-2xl) 0;
            }
        }

        /* ========== Footer ========== */
        footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: var(--spacing-2xl) 0 0;
            margin-top: auto;
        }
        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
            padding-bottom: var(--spacing-xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-content .logo {
            color: #fff;
        }
        .footer-links {
            display: flex;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .footer-links a {
            color: #94a3b8;
            font-size: var(--font-sm);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: #fff;
        }
        .text-sm {
            font-size: var(--font-sm);
        }
        .text-white\/60 {
            color: rgba(255, 255, 255, 0.6);
        }
        .mb-3 {
            margin-bottom: 0.75rem;
        }
        .copyright {
            text-align: center;
            padding: var(--spacing-md) 0;
            font-size: var(--font-xs);
            color: rgba(255, 255, 255, 0.45);
        }
        @media (max-width: 768px) {
            .footer-content {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
        }

        /* ========== Utility ========== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }
        .mr-2 {
            margin-right: 0.5rem;
        }