/* roulang page: index */
/* 设计变量与全局重置 */
      :root {
        --primary: #0f766e;
        --primary-light: #14b8a6;
        --primary-dark: #115e59;
        --secondary: #0369a1;
        --accent: #f59e0b;
        --bg: #f8fafc;
        --surface: #ffffff;
        --text: #1e293b;
        --text-muted: #64748b;
        --border: #e2e8f0;
        --border-light: #f1f5f9;
        --radius-sm: 8px;
        --radius: 12px;
        --radius-lg: 16px;
        --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
        --shadow: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px -1px rgba(0,0,0,0.1);
        --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
        --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
        --transition: all 0.2s ease;
      }

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

      body {
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
        background-color: var(--bg);
        color: var(--text);
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
        padding-bottom: 70px; /* 移动端底部导航占位 */
      }

      @media (min-width: 768px) {
        body {
          padding-bottom: 0;
        }
      }

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

      .container {
        max-width: 1280px;
        margin-left: auto;
        margin-right: auto;
        padding-left: 16px;
        padding-right: 16px;
      }

      /* 顶部导航 */
      .main-header {
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        position: sticky;
        top: 0;
        z-index: 50;
        box-shadow: var(--shadow-sm);
      }

      .nav-desktop {
        display: none;
      }

      @media (min-width: 768px) {
        .nav-desktop {
          display: flex;
          align-items: center;
          justify-content: space-between;
          height: 64px;
        }
      }

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

      .logo i {
        color: var(--primary);
        font-size: 1.8rem;
      }

      .nav-links {
        display: flex;
        align-items: center;
        gap: 32px;
        list-style: none;
      }

      .nav-links a {
        font-weight: 500;
        color: var(--text-muted);
        padding: 8px 0;
        border-bottom: 2px solid transparent;
        transition: var(--transition);
      }

      .nav-links a:hover,
      .nav-links a.active {
        color: var(--primary);
        border-bottom-color: var(--primary);
      }

      .nav-cta-btn {
        background: var(--primary);
        color: white;
        padding: 10px 24px;
        border-radius: 50px;
        font-weight: 600;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
      }

      .nav-cta-btn:hover {
        background: var(--primary-dark);
        box-shadow: var(--shadow-md);
        transform: translateY(-1px);
      }

      /* 移动端汉堡菜单 */
      .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        font-size: 1.6rem;
        color: var(--text);
        cursor: pointer;
        padding: 8px;
      }

      @media (min-width: 768px) {
        .mobile-menu-btn {
          display: none;
        }
      }

      /* 移动抽屉菜单 */
      .mobile-drawer {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 100;
        display: none;
        backdrop-filter: blur(2px);
      }

      .mobile-drawer.open {
        display: block;
      }

      .drawer-content {
        background: var(--surface);
        width: 75%;
        max-width: 300px;
        height: 100%;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        transform: translateX(-100%);
        transition: transform 0.3s ease;
      }

      .mobile-drawer.open .drawer-content {
        transform: translateX(0);
      }

      .drawer-content a {
        display: block;
        padding: 12px 0;
        font-weight: 500;
        color: var(--text);
        border-bottom: 1px solid var(--border-light);
      }

      /* 底部Tab导航 (移动端) */
      .bottom-tabs {
        position: fixed;
        bottom: 0;
        left: 0;
        width: 100%;
        background: var(--surface);
        border-top: 1px solid var(--border);
        display: flex;
        justify-content: space-around;
        align-items: center;
        height: 64px;
        z-index: 40;
        box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
      }

      @media (min-width: 768px) {
        .bottom-tabs {
          display: none;
        }
      }

      .tab-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        color: var(--text-muted);
        font-size: 0.75rem;
        font-weight: 500;
        gap: 4px;
        transition: var(--transition);
      }

      .tab-item i {
        font-size: 1.3rem;
      }

      .tab-item.active {
        color: var(--primary);
      }

      /* Hero 板块 */
      .hero {
        background-image: url('/assets/images/backpic/back-1.png');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        position: relative;
        padding: 80px 0;
        color: white;
        text-align: center;
      }

      .hero::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(15,118,110,0.85) 0%, rgba(3,105,161,0.8) 100%);
      }

      .hero-content {
        position: relative;
        z-index: 2;
        max-width: 800px;
        margin: 0 auto;
      }

      .hero-title {
        font-size: 2.8rem;
        font-weight: 800;
        margin-bottom: 16px;
        letter-spacing: -0.5px;
      }

      @media (min-width: 640px) {
        .hero-title {
          font-size: 3.5rem;
        }
      }

      .hero-sub {
        font-size: 1.2rem;
        opacity: 0.9;
        margin-bottom: 32px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
      }

      .hero-btns {
        display: flex;
        flex-wrap: wrap;
        gap: 16px;
        justify-content: center;
      }

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

      .btn-primary {
        background: var(--accent);
        color: #1e293b;
        box-shadow: var(--shadow-md);
      }

      .btn-primary:hover {
        background: #fbbf24;
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
      }

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

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

      /* KPI 数字板块 */
      .kpi-section {
        padding: 40px 0;
        background: var(--surface);
        border-top: 1px solid var(--border-light);
        border-bottom: 1px solid var(--border-light);
      }

      .kpi-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
        text-align: center;
      }

      @media (min-width: 640px) {
        .kpi-grid {
          grid-template-columns: repeat(4, 1fr);
        }
      }

      .kpi-card {
        padding: 16px;
      }

      .kpi-number {
        font-size: 2rem;
        font-weight: 800;
        color: var(--primary);
        line-height: 1.2;
      }

      .kpi-label {
        color: var(--text-muted);
        font-size: 0.9rem;
        margin-top: 4px;
      }

      /* 板块标题 */
      .section-title {
        font-size: 2rem;
        font-weight: 700;
        text-align: center;
        margin-bottom: 12px;
        color: var(--text);
      }

      .section-sub {
        text-align: center;
        color: var(--text-muted);
        max-width: 700px;
        margin: 0 auto 32px;
        font-size: 1.1rem;
      }

      /* 核心说明卡片 */
      .features-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 24px;
      }

      @media (min-width: 640px) {
        .features-grid {
          grid-template-columns: repeat(2, 1fr);
        }
      }

      @media (min-width: 1024px) {
        .features-grid {
          grid-template-columns: repeat(4, 1fr);
        }
      }

      .feature-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 24px;
        text-align: center;
        transition: var(--transition);
      }

      .feature-card:hover {
        box-shadow: var(--shadow-lg);
        transform: translateY(-4px);
        border-color: var(--primary-light);
      }

      .feature-icon {
        font-size: 2.2rem;
        color: var(--primary);
        margin-bottom: 16px;
      }

      .feature-card h3 {
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 8px;
      }

      .feature-card p {
        color: var(--text-muted);
        font-size: 0.95rem;
      }

      /* 分类入口卡片 */
      .category-entry {
        background: var(--surface);
        border-radius: var(--radius-lg);
        overflow: hidden;
        box-shadow: var(--shadow);
        margin: 40px 0;
      }

      .cat-img {
        height: 200px;
        background-size: cover;
        background-position: center;
      }

      .cat-body {
        padding: 24px;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
      }

      .cat-body h3 {
        font-size: 1.5rem;
        font-weight: 600;
      }

      .cat-body p {
        color: var(--text-muted);
        margin: 8px 0 0;
      }

      .btn-sm {
        padding: 8px 20px;
        font-size: 0.9rem;
        border-radius: 50px;
        background: var(--primary);
        color: white;
        box-shadow: var(--shadow-sm);
        transition: var(--transition);
      }

      .btn-sm:hover {
        background: var(--primary-dark);
        box-shadow: var(--shadow-md);
      }

      /* 最新信息列表 */
      .posts-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
      }

      .post-item {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 20px;
        transition: var(--transition);
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: flex-start;
      }

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

      .post-info h4 {
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 4px;
      }

      .post-meta {
        color: var(--text-muted);
        font-size: 0.85rem;
        display: flex;
        gap: 12px;
        margin-top: 6px;
      }

      .post-cat {
        background: var(--primary-light);
        color: white;
        padding: 2px 10px;
        border-radius: 20px;
        font-size: 0.75rem;
        font-weight: 500;
      }

      .empty-posts {
        text-align: center;
        padding: 40px;
        color: var(--text-muted);
        background: var(--surface);
        border-radius: var(--radius);
        border: 1px dashed var(--border);
      }

      /* 数据可视化板块 */
      .data-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: 24px;
        margin: 40px 0;
      }

      @media (min-width: 768px) {
        .data-grid {
          grid-template-columns: repeat(2, 1fr);
        }
      }

      .data-card {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        padding: 24px;
      }

      .data-card h3 {
        font-weight: 600;
        margin-bottom: 16px;
        font-size: 1.2rem;
      }

      .bar-chart {
        display: flex;
        align-items: flex-end;
        gap: 8px;
        height: 100px;
        margin-top: 12px;
      }

      .bar {
        flex: 1;
        background: var(--primary-light);
        border-radius: 4px 4px 0 0;
        transition: height 0.3s;
      }

      .bar-label {
        font-size: 0.7rem;
        color: var(--text-muted);
        text-align: center;
        margin-top: 4px;
      }

      /* FAQ 手风琴 */
      .faq-list {
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 12px;
      }

      .faq-item {
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: var(--radius);
        overflow: hidden;
      }

      .faq-question {
        width: 100%;
        background: none;
        border: none;
        padding: 20px;
        font-size: 1.05rem;
        font-weight: 500;
        text-align: left;
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
      }

      .faq-answer {
        padding: 0 20px 20px;
        color: var(--text-muted);
        display: none;
      }

      .faq-item.active .faq-answer {
        display: block;
      }

      .faq-item.active .faq-question i {
        transform: rotate(180deg);
      }

      /* CTA 板块 */
      .cta-section {
        background-image: url('/assets/images/backpic/back-2.png');
        background-size: cover;
        background-position: center;
        position: relative;
        padding: 80px 0;
        color: white;
        text-align: center;
      }

      .cta-section::after {
        content: '';
        position: absolute;
        inset: 0;
        background: rgba(15,118,110,0.8);
      }

      .cta-content {
        position: relative;
        z-index: 2;
      }

      .cta-content h2 {
        font-size: 2.2rem;
        font-weight: 700;
      }

      .cta-btn {
        margin-top: 24px;
        background: white;
        color: var(--primary-dark);
        padding: 14px 32px;
        border-radius: 50px;
        font-weight: 700;
        display: inline-block;
        transition: var(--transition);
      }

      .cta-btn:hover {
        background: #f0f9ff;
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
      }

      /* 页脚 */
      .main-footer {
        background: var(--text);
        color: #cbd5e1;
        padding: 40px 0 24px;
        text-align: center;
        border-top: 1px solid var(--border);
      }

      @media (min-width: 768px) {
        .footer-grid {
          display: flex;
          justify-content: space-between;
          align-items: center;
          flex-wrap: wrap;
          text-align: left;
        }
      }

      .footer-links {
        display: flex;
        gap: 24px;
        flex-wrap: wrap;
        justify-content: center;
        margin-top: 16px;
      }

      .footer-links a {
        color: #94a3b8;
        transition: var(--transition);
      }

      .footer-links a:hover {
        color: white;
      }

      .copyright {
        font-size: 0.9rem;
        margin-top: 24px;
        color: #64748b;
      }

      /* 通用间距 */
      .section-padding {
        padding: 64px 0;
      }

      @media (max-width: 640px) {
        .section-padding {
          padding: 40px 0;
        }
        .hero {
          padding: 60px 0;
        }
        .hero-title {
          font-size: 2.3rem;
        }
      }

/* roulang page: article */
:root {
            --color-primary: #1a3a4a;
            --color-primary-light: #1f4d5e;
            --color-accent: #2c7a7b;
            --color-accent-light: #3a8f85;
            --color-accent-soft: #e8f5f4;
            --color-bg: #f6f7f9;
            --color-surface: #ffffff;
            --color-text: #1a1a1a;
            --color-text-secondary: #5f6b7a;
            --color-text-muted: #8896a5;
            --color-border: #e2e6ea;
            --color-border-light: #eef1f4;
            --color-danger: #c0392b;
            --color-warning: #d4a017;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 14px;
            --radius-xl: 18px;
            --shadow-xs: 0 1px 2px rgba(26,58,74,0.04);
            --shadow-sm: 0 1px 3px rgba(26,58,74,0.06), 0 1px 2px rgba(26,58,74,0.03);
            --shadow-md: 0 4px 12px rgba(26,58,74,0.07), 0 1px 3px rgba(26,58,74,0.04);
            --shadow-lg: 0 8px 24px rgba(26,58,74,0.09), 0 2px 6px rgba(26,58,74,0.04);
            --shadow-xl: 0 12px 36px rgba(26,58,74,0.11), 0 4px 10px rgba(26,58,74,0.05);
            --transition-fast: 0.18s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --max-width: 1200px;
            --content-max-width: 780px;
            --header-height: 68px;
            --bottom-tab-height: 56px;
        }

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

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

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            padding-bottom: 0;
        }

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

        a {
            color: var(--color-accent);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-accent-light);
        }

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

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        .content-container {
            width: 100%;
            max-width: var(--content-max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== HEADER ===== */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-xs);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }
        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            transition: opacity var(--transition-fast);
        }
        .logo i {
            color: var(--color-accent);
            font-size: 1.25rem;
        }
        .logo:hover {
            opacity: 0.85;
            color: var(--color-primary);
        }
        .nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links a {
            display: block;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-size: 0.91rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            background: var(--color-accent-soft);
        }
        .nav-links a.active {
            color: var(--color-accent);
            font-weight: 600;
            background: var(--color-accent-soft);
        }
        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 9px 18px;
            border-radius: var(--radius-md);
            font-size: 0.88rem;
            font-weight: 600;
            color: #fff;
            background: var(--color-accent);
            white-space: nowrap;
            transition: all var(--transition-fast);
            letter-spacing: 0.01em;
        }
        .nav-cta-btn:hover {
            background: var(--color-accent-light);
            color: #fff;
            box-shadow: var(--shadow-md);
            transform: translateY(-1px);
        }
        .mobile-menu-btn {
            background: none;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--color-text-secondary);
            font-size: 1.1rem;
            transition: all var(--transition-fast);
        }
        .mobile-menu-btn:hover {
            background: var(--color-accent-soft);
            color: var(--color-accent);
        }
        .flex { display: flex; }
        .items-center { align-items: center; }
        .justify-between { justify-content: space-between; }
        .py-3 { padding-top: 12px; padding-bottom: 12px; }
        .text-lg { font-size: 1.1rem; }

        /* ===== BREADCRUMB ===== */
        .breadcrumb-wrap {
            background: var(--color-surface);
            border-bottom: 1px solid var(--color-border-light);
            padding: 11px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 7px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .sep {
            color: var(--color-border);
            font-size: 0.7rem;
        }
        .breadcrumb .current {
            color: var(--color-text);
            font-weight: 500;
        }

        /* ===== ARTICLE MAIN ===== */
        .article-main {
            padding: 32px 0 48px;
        }
        .article-header {
            margin-bottom: 24px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 14px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        .article-meta .category-tag {
            display: inline-block;
            padding: 4px 11px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: var(--color-accent-soft);
            color: var(--color-accent);
            white-space: nowrap;
        }
        .article-meta .meta-sep {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--color-border);
        }
        .article-h1 {
            font-size: 1.8rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-primary);
            letter-spacing: 0.01em;
            margin-bottom: 12px;
        }
        .article-featured-img {
            margin-bottom: 26px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: #e8ecef;
        }
        .article-featured-img img {
            width: 100%;
            object-fit: cover;
            max-height: 420px;
        }
        .article-body {
            font-size: 1rem;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-body h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 28px 0 12px;
            padding-top: 8px;
        }
        .article-body h3 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--color-primary);
            margin: 22px 0 10px;
        }
        .article-body p {
            margin-bottom: 14px;
        }
        .article-body ul, .article-body ol {
            margin-bottom: 14px;
            padding-left: 22px;
        }
        .article-body li {
            margin-bottom: 6px;
        }
        .article-body blockquote {
            border-left: 3px solid var(--color-accent);
            padding: 12px 18px;
            margin: 18px 0;
            background: var(--color-accent-soft);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--color-text-secondary);
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 16px 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 16px 0;
            font-size: 0.9rem;
        }
        .article-body table th,
        .article-body table td {
            padding: 10px 14px;
            border: 1px solid var(--color-border);
            text-align: left;
        }
        .article-body table th {
            background: #f0f3f6;
            font-weight: 600;
            color: var(--color-primary);
        }

        /* ===== NOT FOUND ===== */
        .not-found-block {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-block .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: #fef3f2;
            color: var(--color-danger);
            font-size: 1.8rem;
            margin-bottom: 18px;
        }
        .not-found-block h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .not-found-block p {
            color: var(--color-text-secondary);
            margin-bottom: 20px;
        }

        /* ===== RELATED ARTICLES ===== */
        .related-section {
            padding: 36px 0 44px;
            border-top: 1px solid var(--color-border-light);
            margin-top: 20px;
        }
        .related-section .section-label {
            font-size: 0.82rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .related-card {
            background: var(--color-surface);
            border: 1px solid var(--color-border-light);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
            display: block;
            color: inherit;
        }
        .related-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            color: inherit;
        }
        .related-card-img {
            height: 140px;
            overflow: hidden;
            background: #e8ecef;
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .related-card-body {
            padding: 12px 14px;
        }
        .related-card-body h4 {
            font-size: 0.91rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            background: var(--color-primary);
            color: #fff;
            padding: 40px 0;
            text-align: center;
            border-radius: var(--radius-lg);
            margin: 20px 0 10px;
        }
        .cta-section h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cta-section p {
            color: rgba(255,255,255,0.8);
            margin-bottom: 18px;
            font-size: 0.93rem;
        }
        .btn-accent-white {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 11px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.91rem;
            background: #fff;
            color: var(--color-accent);
            transition: all var(--transition-fast);
        }
        .btn-accent-white:hover {
            background: #eef7f6;
            color: var(--color-accent);
            box-shadow: var(--shadow-lg);
            transform: translateY(-1px);
        }

        /* ===== FOOTER ===== */
        .main-footer {
            background: var(--color-primary);
            color: rgba(255,255,255,0.8);
            padding: 36px 0 80px;
            font-size: 0.88rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 20px;
        }
        .footer-links {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: flex-end;
        }
        .footer-links a {
            color: rgba(255,255,255,0.75);
            transition: color var(--transition-fast);
            font-size: 0.85rem;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .copyright {
            text-align: center;
            font-size: 0.79rem;
            color: rgba(255,255,255,0.55);
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 16px;
        }
        .font-bold { font-weight: 700; }
        .text-white { color: #fff; }

        /* ===== BOTTOM TAB BAR (MOBILE) ===== */
        .bottom-tab-bar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 200;
            background: var(--color-surface);
            border-top: 1px solid var(--color-border-light);
            box-shadow: 0 -2px 10px rgba(26,58,74,0.08);
            height: var(--bottom-tab-height);
            align-items: center;
            justify-content: space-around;
            padding: 0 8px;
        }
        .bottom-tab-bar .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            flex: 1;
            padding: 6px 4px;
            color: var(--color-text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            cursor: pointer;
            text-decoration: none;
            border: none;
            background: none;
            -webkit-tap-highlight-color: transparent;
        }
        .bottom-tab-bar .tab-item i {
            font-size: 1.2rem;
            transition: color var(--transition-fast);
        }
        .bottom-tab-bar .tab-item:hover,
        .bottom-tab-bar .tab-item:active {
            color: var(--color-accent);
            background: var(--color-accent-soft);
        }
        .bottom-tab-bar .tab-item.active {
            color: var(--color-accent);
            font-weight: 600;
        }

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-h1 {
                font-size: 1.55rem;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none !important;
            }
            .main-header .container.md\\:hidden {
                display: flex !important;
            }
            .main-header {
                height: 56px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .related-card-img {
                height: 110px;
            }
            .article-h1 {
                font-size: 1.35rem;
            }
            .article-body {
                font-size: 0.93rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .bottom-tab-bar {
                display: flex;
            }
            .main-footer {
                padding-bottom: 90px;
            }
            .cta-section {
                border-radius: var(--radius-md);
                padding: 28px 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .content-container {
                padding: 0 14px;
            }
            .article-h1 {
                font-size: 1.2rem;
            }
            .article-meta {
                font-size: 0.78rem;
                gap: 8px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .related-card-img {
                height: 150px;
            }
            .article-main {
                padding: 20px 0 32px;
            }
            .breadcrumb-wrap {
                padding: 8px 0;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
        }

        @media (min-width: 769px) {
            .main-header .container.md\\:hidden {
                display: none !important;
            }
            .bottom-tab-bar {
                display: none !important;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1a7a5a;
            --primary-dark: #145c44;
            --primary-light: #e8f5ef;
            --primary-glow: rgba(26,122,90,0.15);
            --accent: #2c9e8f;
            --accent-light: #d4f0ec;
            --secondary: #0d4f6b;
            --secondary-light: #e6f3f8;
            --bg: #f7f9fb;
            --bg-white: #ffffff;
            --bg-card: #ffffff;
            --bg-alt: #eef3f7;
            --text: #1a1d23;
            --text-secondary: #4a5568;
            --text-muted: #8895a7;
            --text-weak: #b0bac5;
            --border: #e2e8f0;
            --border-light: #edf2f7;
            --border-card: #e8ecf1;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
            --shadow: 0 4px 16px rgba(0,0,0,0.06), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-md: 0 8px 30px rgba(0,0,0,0.08), 0 3px 10px rgba(0,0,0,0.05);
            --shadow-lg: 0 16px 48px rgba(0,0,0,0.10), 0 6px 20px rgba(0,0,0,0.06);
            --shadow-xl: 0 24px 64px rgba(0,0,0,0.12), 0 8px 28px rgba(0,0,0,0.07);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --radius-xl: 22px;
            --radius-full: 9999px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Menlo', monospace;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-fast: 0.14s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --header-height: 68px;
            --bottom-tab-height: 60px;
            --container-max: 1200px;
            --container-padding: 20px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 15px;
            line-height: 1.68;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            padding-bottom: 0;
            overflow-x: hidden;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }

        button {
            cursor: pointer;
        }

        ul, ol {
            list-style: none;
        }

        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
        }

        h1 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
        h2 { font-size: clamp(1.4rem, 2.8vw, 2rem); }
        h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: var(--container-padding);
            padding-right: var(--container-padding);
        }

        /* Header */
        .main-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.94);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            height: var(--header-height);
            display: flex;
            align-items: center;
        }

        .main-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 9px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
            transition: color var(--transition-fast);
            flex-shrink: 0;
        }

        .logo i {
            font-size: 1.35rem;
            color: var(--accent);
        }

        .logo:hover {
            color: var(--primary-dark);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.93rem;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            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: var(--radius-full);
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition);
            flex-shrink: 0;
            box-shadow: 0 2px 10px var(--primary-glow);
        }

        .nav-cta-btn:hover {
            background: var(--primary-dark);
            box-shadow: 0 4px 18px rgba(26,122,90,0.28);
            transform: translateY(-1px);
            color: #fff;
        }

        .nav-cta-btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px var(--primary-glow);
        }

        .mobile-menu-btn {
            display: none;
            font-size: 1.4rem;
            color: var(--text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
        }

        .mobile-menu-btn:hover {
            background: var(--bg-alt);
            color: var(--primary);
        }

        /* 移动端侧边抽屉 */
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: var(--bg-white);
            z-index: 200;
            box-shadow: var(--shadow-xl);
            transition: right var(--transition-slow);
            padding: 24px 20px;
            overflow-y: auto;
        }

        .mobile-drawer.open {
            right: 0;
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.45);
            z-index: 199;
            transition: opacity var(--transition);
        }

        .drawer-overlay.show {
            display: block;
            opacity: 1;
        }

        .drawer-close {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-secondary);
            font-size: 1.2rem;
            margin-bottom: 20px;
            transition: all var(--transition-fast);
        }

        .drawer-close:hover {
            background: #fee2e2;
            color: #dc2626;
        }

        .drawer-nav a {
            display: block;
            padding: 12px 16px;
            border-radius: var(--radius);
            font-weight: 500;
            font-size: 1rem;
            color: var(--text-secondary);
            margin-bottom: 4px;
            transition: all var(--transition-fast);
        }

        .drawer-nav a:hover,
        .drawer-nav a.active {
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
        }

        .drawer-cta {
            display: block;
            margin-top: 16px;
            padding: 12px 20px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-full);
            text-align: center;
            font-weight: 600;
            transition: all var(--transition);
        }

        .drawer-cta:hover {
            background: var(--primary-dark);
            color: #fff;
        }

        /* 移动端底部Tab导航 */
        .bottom-tab-nav {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-top: 1px solid var(--border);
            box-shadow: 0 -2px 16px rgba(0,0,0,0.06);
            height: var(--bottom-tab-height);
            padding: 0 12px;
        }

        .bottom-tab-inner {
            display: flex;
            align-items: center;
            justify-content: space-around;
            height: 100%;
            max-width: 480px;
            margin: 0 auto;
        }

        .bottom-tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            padding: 4px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-muted);
            font-size: 0.7rem;
            font-weight: 500;
            transition: all var(--transition-fast);
            flex: 1;
            text-align: center;
            min-width: 0;
        }

        .bottom-tab-item i {
            font-size: 1.2rem;
            transition: all var(--transition-fast);
        }

        .bottom-tab-item span {
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            max-width: 100%;
        }

        .bottom-tab-item:hover {
            color: var(--primary);
        }

        .bottom-tab-item.active {
            color: var(--primary);
            font-weight: 700;
        }

        .bottom-tab-item.active i {
            color: var(--primary);
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            background: linear-gradient(160deg, #0d3b2e 0%, #1a5c44 30%, #1a7a5a 60%, #208b68 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 56px 0 48px;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13,59,46,0.85) 0%, rgba(26,90,68,0.78) 50%, rgba(26,122,90,0.72) 100%);
            z-index: 1;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--bg) 0%, transparent 100%);
            z-index: 2;
        }

        .page-banner .container {
            position: relative;
            z-index: 3;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 16px;
        }

        .breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .sep {
            color: rgba(255,255,255,0.45);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: #fff;
            font-weight: 600;
        }

        .banner-title {
            font-size: clamp(1.6rem, 4vw, 2.4rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .banner-subtitle {
            font-size: 1rem;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            line-height: 1.6;
        }

        .banner-stats {
            display: flex;
            gap: 32px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .banner-stat {
            display: flex;
            align-items: baseline;
            gap: 6px;
        }

        .banner-stat .stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            font-variant-numeric: tabular-nums;
            font-family: var(--font-mono);
        }

        .banner-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255,255,255,0.75);
        }

        /* Section */
        .section {
            padding: 52px 0;
        }

        .section-sm {
            padding: 36px 0;
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 28px;
        }

        .section-title {
            font-size: clamp(1.3rem, 2.4vw, 1.75rem);
            font-weight: 700;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .section-title .title-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: var(--radius);
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1rem;
        }

        .section-title .title-bar {
            width: 4px;
            height: 26px;
            background: var(--primary);
            border-radius: var(--radius-full);
        }

        .section-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            max-width: 500px;
        }

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

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

        /* Sub Category Grid */
        .subcat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
            gap: 14px;
        }

        .subcat-card {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 16px 18px;
            background: var(--bg-white);
            border: 1px solid var(--border-card);
            border-radius: var(--radius);
            transition: all var(--transition);
            cursor: pointer;
            box-shadow: var(--shadow-sm);
        }

        .subcat-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            background: var(--primary-light);
        }

        .subcat-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: var(--radius);
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.1rem;
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .subcat-card:hover .subcat-icon {
            background: var(--primary);
            color: #fff;
        }

        .subcat-info {
            min-width: 0;
        }

        .subcat-name {
            font-weight: 600;
            font-size: 0.93rem;
            color: var(--text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .subcat-count {
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* Article Card Grid */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 20px;
        }

        .article-card {
            background: var(--bg-white);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }

        .article-card-image {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-alt);
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.06);
        }

        .article-card-tags {
            position: absolute;
            top: 12px;
            left: 12px;
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
        }

        .article-tag {
            display: inline-block;
            padding: 4px 10px;
            background: rgba(255,255,255,0.92);
            color: var(--primary);
            border-radius: var(--radius-full);
            font-size: 0.75rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
        }

        .article-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-excerpt {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            padding-top: 10px;
            border-top: 1px solid var(--border-light);
        }

        .article-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* Featured List */
        .featured-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .featured-item {
            display: flex;
            gap: 16px;
            padding: 16px;
            background: var(--bg-white);
            border: 1px solid var(--border-card);
            border-radius: var(--radius);
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            align-items: flex-start;
        }

        .featured-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--primary);
            transform: translateY(-1px);
        }

        .featured-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: var(--radius);
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
            font-family: var(--font-mono);
        }

        .featured-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text);
        }

        .featured-content p {
            font-size: 0.83rem;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-card);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text);
            cursor: pointer;
            user-select: none;
            gap: 12px;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            font-size: 0.9rem;
            color: var(--text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 20px;
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(145deg, #0d3b2e 0%, #15553d 40%, #1a7a5a 100%);
            position: relative;
            overflow: hidden;
            padding: 52px 0;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .cta-section h2 {
            color: #fff;
            font-size: clamp(1.4rem, 2.6vw, 1.9rem);
            margin-bottom: 10px;
        }

        .cta-section p {
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
            font-size: 0.95rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 20px rgba(0,0,0,0.18);
        }

        .btn-primary:hover {
            background: #f0f9f5;
            box-shadow: 0 6px 28px rgba(0,0,0,0.25);
            transform: translateY(-2px);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255,255,255,0.5);
        }

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

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            margin-top: 32px;
            flex-wrap: wrap;
        }

        .page-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 12px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.9rem;
            color: var(--text-secondary);
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: all var(--transition-fast);
        }

        .page-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .page-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: 0 2px 10px var(--primary-glow);
        }

        .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* Footer */
        .main-footer {
            background: #111827;
            color: #cbd5e1;
            padding: 40px 0 20px;
            margin-bottom: 0;
        }

        .footer-grid {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
            padding-bottom: 24px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
            margin-bottom: 18px;
        }

        .footer-links {
            display: flex;
            gap: 24px;
            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;
            font-size: 0.82rem;
            color: #64748b;
            padding-top: 4px;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            :root {
                --container-padding: 18px;
            }
            .article-grid {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
                gap: 16px;
            }
            .featured-list {
                grid-template-columns: 1fr;
            }
            .subcat-grid {
                grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
                gap: 10px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --container-padding: 16px;
                --header-height: 58px;
            }

            body {
                padding-bottom: var(--bottom-tab-height);
                font-size: 14px;
            }

            .main-header .nav-desktop {
                display: none;
            }

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

            .mobile-menu-btn {
                display: flex;
            }

            .mobile-drawer {
                display: block;
            }

            .drawer-overlay {
                display: block;
                opacity: 0;
                pointer-events: none;
            }

            .drawer-overlay.show {
                opacity: 1;
                pointer-events: auto;
            }

            .bottom-tab-nav {
                display: block;
            }

            .main-footer {
                margin-bottom: var(--bottom-tab-height);
            }

            .page-banner {
                padding: 40px 0 32px;
            }

            .banner-stats {
                gap: 20px;
            }

            .banner-stat .stat-num {
                font-size: 1.5rem;
            }

            .section {
                padding: 36px 0;
            }

            .article-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .featured-list {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .subcat-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }

            .subcat-card {
                padding: 12px 14px;
                gap: 8px;
            }

            .subcat-icon {
                width: 34px;
                height: 34px;
                font-size: 0.9rem;
            }

            .subcat-name {
                font-size: 0.8rem;
            }

            .subcat-count {
                font-size: 0.7rem;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --container-padding: 14px;
            }

            .banner-title {
                font-size: 1.35rem;
            }

            .banner-subtitle {
                font-size: 0.85rem;
            }

            .banner-stats {
                gap: 14px;
            }

            .banner-stat .stat-num {
                font-size: 1.25rem;
            }

            .banner-stat .stat-label {
                font-size: 0.75rem;
            }

            .subcat-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }

            .featured-item {
                flex-direction: column;
                gap: 10px;
                padding: 14px;
            }

            .featured-num {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }

            .article-card-body {
                padding: 14px 16px 16px;
            }

            .article-card-title {
                font-size: 0.95rem;
            }

            .pagination {
                gap: 4px;
            }

            .page-btn {
                min-width: 32px;
                height: 32px;
                font-size: 0.8rem;
                padding: 0 8px;
            }

            .cta-section {
                padding: 36px 0;
            }

            .btn {
                padding: 10px 22px;
                font-size: 0.88rem;
            }
        }

        /* Focus */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 2px;
        }

        /* Utility */
        .flex { display: flex; }
        .justify-between { justify-content: space-between; }
        .items-center { align-items: center; }
        .text-center { text-align: center; }
        .font-bold { font-weight: 700; }
        .text-lg { font-size: 1.125rem; }
        .text-white { color: #fff; }
        .py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
        .gap-3 { gap: 12px; }
        .hidden { display: none; }
        .md\:hidden { display: none; }
        .md\:flex { display: flex; }

        @media (min-width: 769px) {
            .md\:hidden { display: none !important; }
            .md\:flex { display: flex !important; }
        }

        @media (max-width: 768px) {
            .md\:hidden { display: flex !important; }
            .md\:flex { display: none !important; }
        }