/* roulang page: index */
/* ===== CSS 设计变量 ===== */
        :root {
            --primary: #0f0f1a;
            --primary-light: #1a1a3e;
            --primary-mid: #252550;
            --secondary: #d4a853;
            --secondary-light: #e8c87a;
            --accent: #f0a030;
            --accent-hover: #e09120;
            --bg: #f8f7f4;
            --bg-card: #ffffff;
            --bg-dark: #0a0a12;
            --text: #1a1a2e;
            --text-light: #6b7280;
            --text-muted: #9ca3af;
            --text-white: #ffffff;
            --border: #e5e7eb;
            --border-light: #f0efe8;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-xs: 6px;
            --shadow: 0 4px 24px rgba(0, 0, 0, 0.07);
            --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.10);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --sidebar-width: 220px;
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            display: flex;
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--secondary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            transition: all var(--transition);
        }
        button {
            cursor: pointer;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.8rem;
        }
        h2 {
            font-size: 2rem;
            margin-bottom: 1.2rem;
        }
        h3 {
            font-size: 1.25rem;
        }
        p {
            color: var(--text-light);
            margin-bottom: 0.8rem;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== 左侧导航 Sidebar ===== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            padding: 0 0 20px 0;
            box-shadow: 2px 0 30px rgba(0, 0, 0, 0.2);
            transition: transform var(--transition);
        }
        .sidebar-logo {
            padding: 28px 20px 20px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .sidebar-logo a {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
        }
        .sidebar-logo a i {
            color: var(--secondary);
            font-size: 1.6rem;
        }
        .sidebar-logo a span {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .sidebar-nav {
            flex: 1;
            padding: 20px 12px;
            display: flex;
            flex-direction: column;
            gap: 4px;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 16px;
            border-radius: var(--radius-sm);
            color: rgba(255, 255, 255, 0.65);
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition);
        }
        .sidebar-nav a i {
            width: 20px;
            font-size: 1.1rem;
            text-align: center;
        }
        .sidebar-nav a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-white);
        }
        .sidebar-nav a.active {
            background: rgba(212, 168, 83, 0.15);
            color: var(--secondary);
            font-weight: 600;
            box-shadow: inset 3px 0 0 var(--secondary);
        }
        .sidebar-footer {
            padding: 16px 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.75rem;
            color: rgba(255, 255, 255, 0.35);
            text-align: center;
        }

        /* ===== 移动端顶部栏 ===== */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            background: var(--primary);
            padding: 12px 20px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.2);
        }
        .mobile-header .logo-text {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-white);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-header .logo-text i {
            color: var(--secondary);
        }
        .mobile-header .logo-text span {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hamburger {
            background: none;
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 4px 8px;
            border-radius: var(--radius-xs);
        }
        .hamburger:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 998;
            backdrop-filter: blur(4px);
        }
        .mobile-overlay.open {
            display: block;
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            background: var(--bg);
        }

        /* ===== Hero 首屏 ===== */
        .hero {
            position: relative;
            padding: 100px 40px 100px 40px;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.88), rgba(26, 26, 62, 0.80)), url(/assets/images/backpic/back-1.png) center center / cover no-repeat;
            color: var(--text-white);
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg), transparent);
            pointer-events: none;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, var(--secondary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 580px;
            margin-bottom: 32px;
            line-height: 1.8;
        }
        .hero .btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            background: var(--secondary);
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(212, 168, 83, 0.35);
            transition: all var(--transition);
            border: none;
        }
        .btn:hover {
            background: var(--accent);
            color: var(--primary);
            box-shadow: 0 8px 28px rgba(212, 168, 83, 0.45);
            transform: translateY(-2px);
        }
        .btn-outline {
            background: transparent;
            color: var(--text-white);
            border: 2px solid rgba(255, 255, 255, 0.25);
            box-shadow: none;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: var(--secondary);
            color: var(--secondary);
            box-shadow: none;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 10px 24px;
            font-size: 0.875rem;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 64px 40px;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--secondary), var(--accent));
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            max-width: 560px;
            margin: 12px auto 0;
            color: var(--text-light);
        }

        /* ===== 关于板块 ===== */
        .about-section {
            background: var(--bg-card);
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .about-grid .text-content h2 {
            margin-bottom: 16px;
        }
        .about-grid .text-content p {
            color: var(--text-light);
            font-size: 1.05rem;
        }
        .about-grid .image-wrap {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .about-grid .image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 280px;
        }
        .about-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 24px;
        }
        .about-tags .tag {
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(212, 168, 83, 0.12);
            color: var(--secondary);
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(212, 168, 83, 0.2);
        }

        /* ===== 分类入口卡片 ===== */
        .categories-section {
            background: var(--bg);
        }
        .categories-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }
        .category-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all var(--transition);
            border: 1px solid var(--border-light);
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(212, 168, 83, 0.2);
        }
        .category-card .card-img {
            height: 200px;
            overflow: hidden;
        }
        .category-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
            border-radius: 0;
        }
        .category-card:hover .card-img img {
            transform: scale(1.05);
        }
        .category-card .card-body {
            padding: 24px;
        }
        .category-card .card-body h3 {
            margin-bottom: 8px;
            font-size: 1.15rem;
        }
        .category-card .card-body p {
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 16px;
        }
        .category-card .card-body .card-link {
            color: var(--secondary);
            font-weight: 600;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .category-card .card-body .card-link i {
            font-size: 0.8rem;
            transition: transform var(--transition);
        }
        .category-card .card-body .card-link:hover i {
            transform: translateX(4px);
        }

        /* ===== 最新资讯列表 ===== */
        .latest-section {
            background: var(--bg-card);
        }
        .latest-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .latest-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 20px 24px;
            background: var(--bg);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .latest-item:hover {
            background: var(--bg-card);
            border-color: var(--border);
            box-shadow: var(--shadow);
        }
        .latest-item .item-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: rgba(212, 168, 83, 0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 1.1rem;
        }
        .latest-item .item-content {
            flex: 1;
        }
        .latest-item .item-content h3 {
            font-size: 1.05rem;
            margin-bottom: 4px;
            font-weight: 600;
        }
        .latest-item .item-content p {
            font-size: 0.88rem;
            color: var(--text-light);
            margin-bottom: 0;
        }
        .latest-item .item-meta {
            display: flex;
            gap: 16px;
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-top: 6px;
        }
        .latest-item .item-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .latest-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-muted);
            font-size: 1rem;
        }
        .latest-empty i {
            font-size: 2.5rem;
            margin-bottom: 16px;
            color: var(--border);
        }

        /* ===== 数据统计 ===== */
        .stats-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            color: var(--text-white);
            padding: 72px 40px;
        }
        .stats-section .section-title h2 {
            color: var(--text-white);
        }
        .stats-section .section-title h2::after {
            background: var(--secondary);
        }
        .stats-section .section-title p {
            color: rgba(255, 255, 255, 0.6);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stat-item {
            padding: 20px;
        }
        .stat-item .stat-number {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--secondary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-item .stat-label {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.65);
            font-weight: 500;
        }
        .stat-item .stat-icon {
            font-size: 2rem;
            color: rgba(212, 168, 83, 0.3);
            margin-bottom: 12px;
        }

        /* ===== 使用流程 ===== */
        .steps-section {
            background: var(--bg);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
        }
        .step-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            box-shadow: var(--shadow);
            border: 1px solid var(--border-light);
            transition: all var(--transition);
            position: relative;
        }
        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .step-card .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            color: var(--primary);
            font-size: 1.4rem;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
        }
        .step-card h3 {
            font-size: 1.15rem;
            margin-bottom: 8px;
        }
        .step-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-card);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(212, 168, 83, 0.3);
        }
        .faq-question {
            padding: 18px 24px;
            background: var(--bg);
            font-weight: 600;
            font-size: 1rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: background var(--transition);
        }
        .faq-question:hover {
            background: rgba(212, 168, 83, 0.06);
        }
        .faq-question i {
            color: var(--secondary);
            transition: transform var(--transition);
            font-size: 0.9rem;
        }
        .faq-question.open i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.4s ease;
            background: var(--bg-card);
        }
        .faq-answer.open {
            padding: 0 24px 18px;
            max-height: 300px;
        }
        .faq-answer p {
            font-size: 0.92rem;
            color: var(--text-light);
            margin-bottom: 0;
            padding-top: 4px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.92), rgba(26, 26, 62, 0.88)), url(/assets/images/backpic/back-2.png) center center / cover no-repeat;
            color: var(--text-white);
            text-align: center;
            padding: 80px 40px;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2.2rem;
            margin-bottom: 12px;
        }
        .cta-section p {
            color: rgba(255, 255, 255, 0.7);
            max-width: 520px;
            margin: 0 auto 32px;
            font-size: 1.05rem;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.5);
            padding: 40px 40px 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-col p,
        .footer-col a {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.8;
        }
        .footer-col a:hover {
            color: var(--secondary);
        }
        .footer-col .footer-logo {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col .footer-logo i {
            color: var(--secondary);
        }
        .footer-col .footer-logo span {
            background: linear-gradient(135deg, var(--secondary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-col .social-links {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .footer-col .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 1rem;
            transition: all var(--transition);
        }
        .footer-col .social-links a:hover {
            background: var(--secondary);
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 32px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.3);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a:hover {
            color: var(--secondary);
        }

        /* ===== 响应式设计 ===== */
        @media (max-width: 1024px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .about-grid {
                gap: 32px;
            }
            .hero h1 {
                font-size: 2.6rem;
            }
        }

        @media (max-width: 768px) {
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .mobile-header {
                display: flex;
            }
            .main-content {
                margin-left: 0;
                padding-top: 60px;
            }
            .hero {
                padding: 60px 24px 70px 24px;
            }
            .hero h1 {
                font-size: 2.2rem;
            }
            .hero p {
                font-size: 1rem;
            }
            .section {
                padding: 48px 24px;
            }
            .about-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .about-grid .image-wrap {
                order: -1;
            }
            .categories-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item .stat-number {
                font-size: 2.2rem;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .latest-item {
                flex-direction: column;
                gap: 12px;
                padding: 16px 18px;
            }
            .btn {
                padding: 12px 28px;
                font-size: 0.9rem;
            }
            .cta-section {
                padding: 56px 24px;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .mobile-overlay.open {
                display: block;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }
            .hero p {
                font-size: 0.9rem;
            }
            .section-title h2 {
                font-size: 1.5rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item .stat-number {
                font-size: 1.8rem;
            }
            .stat-item .stat-label {
                font-size: 0.8rem;
            }
            .btn-group {
                flex-direction: column;
                align-items: center;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 18px;
            }
            .faq-answer.open {
                padding: 0 18px 14px;
            }
            .footer-grid {
                gap: 20px;
            }
        }

        /* ===== 工具类 ===== */
        .text-center {
            text-align: center;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .gap-8 {
            gap: 8px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .badge {
            display: inline-block;
            padding: 3px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(212, 168, 83, 0.12);
            color: var(--secondary);
            border: 1px solid rgba(212, 168, 83, 0.2);
        }
        .badge-sm {
            font-size: 0.7rem;
            padding: 2px 10px;
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #6c5ce7;
            --primary-dark: #5a4bd1;
            --primary-light: #a29bfe;
            --primary-bg: rgba(108, 92, 231, 0.08);
            --secondary: #fd79a8;
            --secondary-dark: #e84393;
            --accent: #00cec9;
            --bg: #f8f9fe;
            --bg-card: #ffffff;
            --bg-dark: #1e1e2f;
            --bg-dark-card: #2d2d44;
            --text: #2d2d44;
            --text-light: #6c6c8a;
            --text-white: #f1f1f6;
            --border: #e8e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 20px rgba(108, 92, 231, 0.10);
            --shadow-hover: 0 12px 36px rgba(108, 92, 231, 0.18);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --sidebar-width: 240px;
            --header-height: 0;
        }

        /* ===== Reset / Base ===== */
        *,
        *::before,
        *::after {
            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;
            font-size: 16px;
            display: flex;
            min-height: 100vh;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            outline: none;
            border: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
        }
        h1 {
            font-size: 2.5rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.15rem;
        }
        p {
            color: var(--text-light);
            margin-bottom: 0.75rem;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* ===== 左侧导航 ===== */
        .app-shell {
            display: flex;
            width: 100%;
            min-height: 100vh;
        }
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: var(--bg-card);
            border-right: 1px solid var(--border);
            display: flex;
            flex-direction: column;
            z-index: 1000;
            padding: 28px 0 24px;
            transition: var(--transition);
            overflow-y: auto;
        }
        .sidebar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 24px 32px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--primary);
            border-bottom: 1px solid var(--border);
            margin-bottom: 20px;
        }
        .sidebar-logo i {
            font-size: 1.8rem;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .sidebar-logo span {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding: 0 12px;
            flex: 1;
        }
        .sidebar-nav a {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .sidebar-nav a i {
            width: 22px;
            font-size: 1.15rem;
            color: var(--text-light);
            transition: var(--transition);
        }
        .sidebar-nav a:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .sidebar-nav a:hover i {
            color: var(--primary);
        }
        .sidebar-nav a.active {
            background: var(--primary-bg);
            color: var(--primary);
            font-weight: 600;
        }
        .sidebar-nav a.active i {
            color: var(--primary);
        }
        .sidebar-footer-links {
            padding: 20px 24px 0;
            border-top: 1px solid var(--border);
            margin-top: auto;
            font-size: 0.8rem;
            color: var(--text-light);
        }
        .sidebar-footer-links a {
            color: var(--text-light);
            font-size: 0.8rem;
        }
        .sidebar-footer-links a:hover {
            color: var(--primary);
        }

        /* ===== 主内容区 ===== */
        .main-content {
            margin-left: var(--sidebar-width);
            flex: 1;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* ===== 移动端菜单触发器 ===== */
        .menu-toggle {
            display: none;
            position: fixed;
            top: 16px;
            left: 16px;
            z-index: 1100;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 10px 14px;
            font-size: 1.3rem;
            color: var(--text);
            cursor: pointer;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .menu-toggle:hover {
            background: var(--primary-bg);
            color: var(--primary);
        }
        .menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.4);
            z-index: 999;
            backdrop-filter: blur(4px);
        }

        /* ===== Banner / Hero 内页 ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, #2d1b69 100%);
            overflow: hidden;
            min-height: 260px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.25;
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            color: #fff;
            font-size: 2.8rem;
            margin-bottom: 12px;
            text-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
        }
        .page-banner p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
            max-width: 620px;
            margin: 0 auto 16px;
        }
        .page-banner .breadcrumb {
            display: flex;
            justify-content: center;
            gap: 8px;
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.7);
        }
        .page-banner .breadcrumb a {
            color: rgba(255, 255, 255, 0.85);
        }
        .page-banner .breadcrumb a:hover {
            color: #fff;
        }
        .page-banner .breadcrumb span {
            color: var(--primary-light);
        }

        /* ===== 分类介绍 ===== */
        .category-intro {
            padding: 60px 0 40px;
            background: var(--bg-card);
        }
        .category-intro .container {
            display: flex;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }
        .category-intro .intro-text {
            flex: 1 1 380px;
        }
        .category-intro .intro-text h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .category-intro .intro-text h2 span {
            color: var(--primary);
        }
        .category-intro .intro-text p {
            font-size: 1.05rem;
        }
        .category-intro .intro-image {
            flex: 0 0 300px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .category-intro .intro-image img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        /* ===== 攻略卡片网格 ===== */
        .section-guides {
            padding: 60px 0;
            background: var(--bg);
        }
        .section-guides .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-guides .section-header h2 {
            font-size: 2rem;
            margin-bottom: 10px;
        }
        .section-guides .section-header p {
            max-width: 540px;
            margin: 0 auto;
            color: var(--text-light);
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .guide-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
            flex-shrink: 0;
        }
        .guide-card .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }
        .guide-card .card-tags span {
            display: inline-block;
            background: var(--primary-bg);
            color: var(--primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 20px;
        }
        .guide-card .card-body h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .guide-card .card-body h3 a {
            color: var(--text);
        }
        .guide-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .guide-card .card-body p {
            font-size: 0.92rem;
            color: var(--text-light);
            flex: 1;
            margin-bottom: 16px;
        }
        .guide-card .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            font-size: 0.85rem;
            color: var(--text-light);
        }
        .guide-card .card-footer .btn-sm {
            padding: 6px 18px;
            border-radius: 20px;
            background: var(--primary);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition);
        }
        .guide-card .card-footer .btn-sm:hover {
            background: var(--primary-dark);
            transform: scale(1.03);
        }

        /* ===== 新手入门版块 ===== */
        .section-beginner {
            padding: 60px 0;
            background: var(--bg-card);
        }
        .section-beginner .container {
            display: flex;
            gap: 40px;
            align-items: center;
            flex-wrap: wrap;
        }
        .beginner-content {
            flex: 1 1 380px;
        }
        .beginner-content h2 {
            font-size: 1.8rem;
            margin-bottom: 16px;
        }
        .beginner-content h2 span {
            color: var(--secondary);
        }
        .beginner-content .step-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 20px;
        }
        .beginner-content .step-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .beginner-content .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .beginner-content .step-text h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }
        .beginner-content .step-text p {
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .beginner-media {
            flex: 0 0 300px;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .beginner-media img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        /* ===== 技巧与进阶 ===== */
        .section-tips {
            padding: 60px 0;
            background: var(--bg);
        }
        .section-tips .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-tips .section-header h2 {
            font-size: 2rem;
        }
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 24px;
        }
        .tip-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 24px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: var(--transition);
            text-align: center;
        }
        .tip-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .tip-card .tip-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--primary-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.6rem;
            color: var(--primary);
        }
        .tip-card h3 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        .tip-card p {
            font-size: 0.9rem;
            color: var(--text-light);
        }

        /* ===== 热门攻略标签 ===== */
        .section-tags {
            padding: 40px 0 50px;
            background: var(--bg-card);
        }
        .section-tags .container {
            text-align: center;
        }
        .section-tags h3 {
            margin-bottom: 20px;
            font-size: 1.3rem;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 8px 22px;
            border-radius: 30px;
            background: var(--bg);
            color: var(--text-light);
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== CTA ===== */
        .section-cta {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--primary-dark), #2d1b69);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .section-cta::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: 0.15;
            z-index: 1;
        }
        .section-cta .container {
            position: relative;
            z-index: 2;
        }
        .section-cta h2 {
            color: #fff;
            font-size: 2rem;
            margin-bottom: 12px;
        }
        .section-cta p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.1rem;
            max-width: 540px;
            margin: 0 auto 28px;
        }
        .section-cta .btn-cta {
            display: inline-block;
            padding: 16px 44px;
            border-radius: 50px;
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }
        .section-cta .btn-cta:hover {
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
            color: var(--primary);
        }

        /* ===== FAQ ===== */
        .section-faq {
            padding: 60px 0;
            background: var(--bg);
        }
        .section-faq .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-faq .section-header h2 {
            font-size: 2rem;
        }
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 1rem;
            color: var(--text);
            list-style: none;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f107";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 1.1rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .faq-item[open] summary::after {
            transform: rotate(180deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* ===== Footer (复用首页结构) ===== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-white);
            padding: 52px 0 0;
            margin-top: auto;
        }
        .site-footer .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
            gap: 36px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-col .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col .footer-logo i {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .footer-col .footer-logo span {
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .footer-col p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 12px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 14px;
        }
        .footer-col a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            display: inline-block;
            margin-bottom: 6px;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
            transform: translateX(4px);
        }
        .social-links {
            display: flex;
            gap: 14px;
            margin-top: 12px;
        }
        .social-links a {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.7);
            font-size: 1.1rem;
            transition: var(--transition);
            margin-bottom: 0;
        }
        .social-links a:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-3px);
        }
        .footer-bottom {
            text-align: center;
            padding: 22px 0;
            color: rgba(255, 255, 255, 0.4);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            :root {
                --sidebar-width: 220px;
            }
            h1 {
                font-size: 2.2rem;
            }
            h2 {
                font-size: 1.7rem;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            .sidebar {
                transform: translateX(-100%);
            }
            .sidebar.open {
                transform: translateX(0);
            }
            .menu-overlay.open {
                display: block;
            }
            .main-content {
                margin-left: 0;
            }
            :root {
                --sidebar-width: 260px;
            }
            h1 {
                font-size: 1.8rem;
            }
            h2 {
                font-size: 1.5rem;
            }
            .page-banner {
                padding: 60px 0 40px;
                min-height: 200px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .category-intro .container {
                flex-direction: column;
                text-align: center;
            }
            .category-intro .intro-image {
                flex: 0 0 auto;
                width: 100%;
                max-width: 360px;
            }
            .guide-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .section-beginner .container {
                flex-direction: column-reverse;
                text-align: center;
            }
            .beginner-content .step-item {
                text-align: left;
            }
            .beginner-media {
                flex: 0 0 auto;
                width: 100%;
                max-width: 360px;
            }
            .tips-grid {
                grid-template-columns: 1fr 1fr;
                gap: 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .section-cta h2 {
                font-size: 1.6rem;
            }
            .section-cta .btn-cta {
                padding: 14px 32px;
                font-size: 0.95rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .category-intro .intro-text h2 {
                font-size: 1.4rem;
            }
            .tag-cloud a {
                font-size: 0.8rem;
                padding: 6px 16px;
            }
            .faq-item summary {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-item .faq-answer {
                font-size: 0.85rem;
                padding: 0 16px 14px;
            }
            .section-cta {
                padding: 50px 0;
            }
            .section-cta h2 {
                font-size: 1.3rem;
            }
            .section-cta p {
                font-size: 0.95rem;
            }
        }

/* roulang page: article */
:root {
  --primary: #0f0d1a;
  --primary-light: #1a1730;
  --primary-elevated: #231f40;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --accent-glow: rgba(245, 158, 11, 0.15);
  --bg: #0a0914;
  --bg-card: #15122a;
  --bg-elevated: #1f1b3a;
  --text: #f1f0f7;
  --text-muted: #9d97b5;
  --text-dim: #6b6390;
  --border: #2d2848;
  --border-light: #3d3560;
  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
  --shadow: 0 6px 28px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.5);
  --transition: 0.25s ease;
  --sidebar-width: 250px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  display: flex;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; border-radius: var(--radius); }
button, input, textarea { font-family: inherit; font-size: 1rem; outline: none; }
.container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ===== 左侧导航 ===== */
.sidebar {
  position: fixed; top: 0; left: 0; width: var(--sidebar-width); height: 100vh;
  background: var(--primary); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; z-index: 1000;
  padding: 28px 0; overflow-y: auto;
}
.sidebar-logo {
  display: flex; align-items: center; gap: 12px;
  font-size: 1.35rem; font-weight: 700; color: var(--text);
  padding: 0 24px 28px; border-bottom: 1px solid var(--border); margin-bottom: 20px;
}
.sidebar-logo i { color: var(--accent); font-size: 1.6rem; }
.sidebar-logo span { background: linear-gradient(135deg, var(--accent), #fbbf24); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.sidebar-nav { display: flex; flex-direction: column; gap: 4px; padding: 0 12px; flex: 1; }
.sidebar-nav a {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 16px; border-radius: var(--radius);
  color: var(--text-muted); font-weight: 500; font-size: 0.95rem;
  transition: all var(--transition); position: relative;
}
.sidebar-nav a i { width: 20px; text-align: center; font-size: 1.1rem; }
.sidebar-nav a:hover { background: var(--bg-card); color: var(--text); }
.sidebar-nav a.active {
  background: var(--accent-glow); color: var(--accent); font-weight: 600;
}
.sidebar-nav a.active::before {
  content: ''; position: absolute; left: -12px; top: 50%; transform: translateY(-50%);
  width: 4px; height: 28px; background: var(--accent); border-radius: 0 4px 4px 0;
}
.sidebar-footer-nav {
  padding: 20px 24px 0; border-top: 1px solid var(--border); margin-top: auto;
}
.sidebar-footer-nav a {
  display: flex; align-items: center; gap: 10px;
  color: var(--text-dim); font-size: 0.85rem; padding: 6px 0;
  transition: color var(--transition);
}
.sidebar-footer-nav a:hover { color: var(--text-muted); }

/* ===== 移动端汉堡 ===== */
.mobile-toggle { display: none; position: fixed; top: 16px; left: 16px; z-index: 1100;
  background: var(--bg-card); border: 1px solid var(--border); color: var(--text);
  width: 44px; height: 44px; border-radius: var(--radius-sm); font-size: 1.3rem;
  cursor: pointer; align-items: center; justify-content: center;
  transition: background var(--transition); box-shadow: var(--shadow-sm);
}
.mobile-toggle:hover { background: var(--primary-elevated); }
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.6); z-index: 999; }

/* ===== 主内容 ===== */
.main-content {
  margin-left: var(--sidebar-width); flex: 1; min-height: 100vh;
  display: flex; flex-direction: column;
}

/* ===== 文章头部 ===== */
.article-header {
  position: relative; padding: 60px 0 40px; overflow: hidden;
  background: var(--primary-light);
  border-bottom: 1px solid var(--border);
}
.article-header-bg {
  position: absolute; inset: 0; opacity: 0.08; background-size: cover; background-position: center;
  background-image: url('/assets/images/backpic/back-1.png');
}
.article-header .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  font-size: 0.85rem; color: var(--text-dim); margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: var(--text-dim); }
.article-header h1 {
  font-size: 2.4rem; font-weight: 800; line-height: 1.25;
  color: var(--text); margin-bottom: 16px; letter-spacing: -0.02em;
}
.article-meta {
  display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px;
  color: var(--text-muted); font-size: 0.9rem;
}
.article-meta .meta-item { display: flex; align-items: center; gap: 6px; }
.article-meta .meta-item i { color: var(--accent); font-size: 0.85rem; }
.article-meta .category-tag {
  display: inline-block; background: var(--accent-glow); color: var(--accent);
  padding: 4px 14px; border-radius: 20px; font-size: 0.8rem; font-weight: 600;
}

/* ===== 文章正文 ===== */
.article-body {
  padding: 48px 0 40px; flex: 1;
}
.article-body .container {
  max-width: 840px;
}
.article-cover {
  margin-bottom: 32px; border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow); aspect-ratio: 16/9; background: var(--bg-card);
}
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-content {
  font-size: 1.05rem; line-height: 1.85; color: var(--text);
}
.article-content p { margin-bottom: 1.2em; }
.article-content h2, .article-content h3, .article-content h4 {
  margin-top: 1.6em; margin-bottom: 0.6em; font-weight: 700; color: var(--text);
}
.article-content h2 { font-size: 1.6rem; }
.article-content h3 { font-size: 1.25rem; }
.article-content ul, .article-content ol { margin-bottom: 1.2em; padding-left: 1.5em; }
.article-content li { margin-bottom: 0.4em; }
.article-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-content blockquote {
  border-left: 4px solid var(--accent); background: var(--bg-card);
  padding: 16px 24px; margin: 1.2em 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted); font-style: italic;
}
.article-content img { margin: 1.2em 0; border-radius: var(--radius); box-shadow: var(--shadow-sm); }

/* ===== 文章标签/分享 ===== */
.article-footer-meta {
  margin-top: 40px; padding-top: 28px; border-top: 1px solid var(--border);
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.article-tags .tag {
  background: var(--bg-card); color: var(--text-muted); padding: 6px 16px;
  border-radius: 20px; font-size: 0.8rem; border: 1px solid var(--border);
  transition: all var(--transition); cursor: default;
}
.article-tags .tag:hover { border-color: var(--accent); color: var(--accent); }
.article-share { display: flex; align-items: center; gap: 10px; }
.article-share span { color: var(--text-dim); font-size: 0.85rem; }
.article-share a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 50%; background: var(--bg-card);
  color: var(--text-muted); border: 1px solid var(--border);
  transition: all var(--transition); font-size: 0.95rem;
}
.article-share a:hover { background: var(--accent); color: var(--primary); border-color: var(--accent); }

/* ===== 文章导航 ===== */
.article-pagination {
  margin-top: 32px; display: flex; flex-wrap: wrap; gap: 12px;
  justify-content: space-between;
}
.article-pagination a {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 24px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-muted); font-size: 0.9rem;
  transition: all var(--transition);
}
.article-pagination a:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); }
.article-pagination .disabled { opacity: 0.4; pointer-events: none; }

/* ===== 相关推荐 ===== */
.related-section {
  padding: 48px 0; background: var(--primary-light);
  border-top: 1px solid var(--border);
}
.related-section .section-title {
  font-size: 1.6rem; font-weight: 700; margin-bottom: 28px;
  display: flex; align-items: center; gap: 12px;
}
.related-section .section-title i { color: var(--accent); }
.related-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.related-card {
  background: var(--bg-card); border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--border); transition: all var(--transition);
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--border-light); }
.related-card .card-img {
  aspect-ratio: 16/9; overflow: hidden; background: var(--bg-elevated);
}
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .card-img img { transform: scale(1.05); }
.related-card .card-body { padding: 18px 20px 22px; }
.related-card .card-body h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 6px; line-height: 1.4; }
.related-card .card-body h3 a { color: var(--text); }
.related-card .card-body h3 a:hover { color: var(--accent); }
.related-card .card-body .card-meta { font-size: 0.8rem; color: var(--text-dim); display: flex; align-items: center; gap: 12px; }

/* ===== CTA ===== */
.cta-section {
  padding: 60px 0; text-align: center;
  background: var(--primary); position: relative; overflow: hidden;
}
.cta-section::before {
  content: ''; position: absolute; inset: 0; opacity: 0.06;
  background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; }
.cta-section p { color: var(--text-muted); max-width: 560px; margin: 0 auto 28px; font-size: 1.05rem; }
.btn-group { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: var(--radius); font-weight: 600; font-size: 1rem;
  transition: all var(--transition); cursor: pointer; border: none; text-decoration: none;
}
.btn-primary { background: var(--accent); color: var(--primary); }
.btn-primary:hover { background: var(--accent-hover); color: var(--primary); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(245,158,11,0.3); }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-glow); transform: translateY(-2px); }

/* ===== 错误状态 ===== */
.error-page {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 80px 24px; text-align: center;
}
.error-page .error-icon { font-size: 4rem; color: var(--text-dim); margin-bottom: 20px; }
.error-page h2 { font-size: 1.8rem; font-weight: 700; margin-bottom: 12px; }
.error-page p { color: var(--text-muted); margin-bottom: 28px; max-width: 420px; }

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary); border-top: 1px solid var(--border); padding: 48px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 32px;
  max-width: 1120px; margin: 0 auto; padding: 0 24px;
}
.footer-col .footer-logo { display: flex; align-items: center; gap: 10px; font-size: 1.2rem; font-weight: 700; margin-bottom: 14px; }
.footer-col .footer-logo i { color: var(--accent); }
.footer-col .footer-logo span { background: linear-gradient(135deg, var(--accent), #fbbf24); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-col p { color: var(--text-muted); font-size: 0.88rem; line-height: 1.6; margin-bottom: 10px; }
.footer-col h4 { color: var(--text); font-weight: 600; margin-bottom: 14px; font-size: 1rem; }
.footer-col a { color: var(--text-muted); font-size: 0.88rem; display: inline-block; margin-bottom: 6px; }
.footer-col a:hover { color: var(--accent); }
.social-links { display: flex; gap: 12px; margin-top: 12px; }
.social-links a {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%; background: var(--bg-card);
  color: var(--text-muted); border: 1px solid var(--border);
  transition: all var(--transition); font-size: 1rem;
}
.social-links a:hover { background: var(--accent); color: var(--primary); border-color: var(--accent); }
.footer-bottom {
  text-align: center; padding: 24px; margin-top: 40px;
  border-top: 1px solid var(--border); color: var(--text-dim); font-size: 0.82rem;
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .article-header h1 { font-size: 2rem; }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); transition: transform 0.35s ease; }
  .sidebar.open { transform: translateX(0); }
  .sidebar-overlay.open { display: block; }
  .mobile-toggle { display: flex; }
  .main-content { margin-left: 0; padding-top: 0; }
  .article-header { padding: 40px 0 28px; }
  .article-header h1 { font-size: 1.6rem; }
  .article-body { padding: 28px 0; }
  .related-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .article-footer-meta { flex-direction: column; align-items: flex-start; }
  .article-pagination { flex-direction: column; }
  .cta-section h2 { font-size: 1.5rem; }
  .sidebar-logo { padding-left: 20px; padding-right: 20px; }
  .sidebar-nav a { padding: 10px 14px; }
}
@media (max-width: 520px) {
  .article-header h1 { font-size: 1.35rem; }
  .article-meta { gap: 10px; font-size: 0.8rem; flex-wrap: wrap; }
  .btn { padding: 12px 24px; font-size: 0.9rem; width: 100%; justify-content: center; }
  .btn-group { flex-direction: column; }
  .container { padding: 0 16px; }
  .article-content { font-size: 0.98rem; }
  .breadcrumb { font-size: 0.78rem; }
}