/* roulang page: index */
/* ===== 设计变量 ===== */
    :root {
      --brand-50: #F0F5F8;
      --brand-100: #E0EBF1;
      --brand-200: #C3D8E2;
      --brand-300: #9DBCCB;
      --brand-400: #6E9EB5;
      --brand-500: #2E6F95;
      --brand-600: #245A7A;
      --brand-700: #1D4D6A;
      --brand-800: #163C54;
      --brand-900: #0F2A3C;
      --accent-400: #D4AD5C;
      --accent-500: #C29B4D;
      --page-bg: #F8FAFC;
      --card-bg: #FFFFFF;
      --text-primary: #1F2A33;
      --text-secondary: #5A6B78;
      --border-color: #E3E8EE;
      --dark-text: #F1F7FA;
      --dark-sub: #A9BCC8;
      --radius-card: 0.75rem;
      --radius-lg: 0.5rem;
      --radius-full: 9999px;
      --shadow-card: 0 1px 3px rgba(15,35,55,.04), 0 10px 30px rgba(15,35,55,.06);
      --shadow-hover: 0 4px 12px rgba(15,35,55,.08), 0 16px 40px rgba(15,35,55,.10);
    }

    /* ===== 基础重置 ===== */
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      background-color: var(--page-bg);
      color: var(--text-primary);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }
    a {
      color: inherit;
      text-decoration: none;
      transition: color .2s ease;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button {
      cursor: pointer;
      border: none;
      background: none;
      font-family: inherit;
    }
    input,
    select {
      font-family: inherit;
      font-size: 14px;
    }

    /* ===== 容器 ===== */
    .container-x {
      max-width: 1280px;
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }
    @media (max-width: 768px) {
      .container-x {
        padding-left: 16px;
        padding-right: 16px;
      }
    }

    /* ===== 导航 ===== */
    .nav-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(248, 250, 252, .85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid #E7ECF1;
    }
    .nav-link {
      padding: 8px 14px;
      border-radius: var(--radius-full);
      font-size: 14px;
      font-weight: 500;
      color: #40505c;
      transition: all .2s ease;
    }
    .nav-link:hover {
      background: var(--brand-50);
      color: var(--brand-600);
    }
    .nav-link.active {
      color: var(--brand-600);
      font-weight: 600;
      position: relative;
    }
    .nav-link.active::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: -4px;
      transform: translateX(-50%);
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--accent-400);
    }
    .search-box {
      display: flex;
      align-items: center;
      gap: 6px;
      width: 200px;
      height: 36px;
      background: #F1F5F9;
      border-radius: var(--radius-lg);
      padding: 0 10px;
      border: 1px solid transparent;
      transition: all .2s ease;
    }
    .search-box:hover {
      border-color: #CBD5E1;
    }
    .search-box:focus-within {
      border-color: var(--brand-200);
      box-shadow: 0 0 0 2px rgba(46, 111, 149, .15);
    }
    .search-box input {
      border: none;
      outline: none;
      background: transparent;
      flex: 1;
      font-size: 13px;
      color: var(--text-primary);
    }
    .search-box kbd {
      font-size: 11px;
      background: #fff;
      border: 1px solid #E2E8F0;
      border-radius: 4px;
      padding: 2px 5px;
      color: #94A3B8;
      white-space: nowrap;
    }
    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 24px;
      border-radius: var(--radius-lg);
      background: var(--brand-500);
      color: #fff;
      font-size: 14px;
      font-weight: 600;
      border: none;
      transition: all .2s ease;
      cursor: pointer;
    }
    .btn-primary:hover {
      background: var(--brand-700);
      transform: translateY(-1px);
      box-shadow: 0 4px 12px rgba(29, 77, 106, .25);
    }
    .btn-primary:focus-visible {
      outline: none;
      box-shadow: 0 0 0 4px rgba(46, 111, 149, .2);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 44px;
      padding: 0 24px;
      border-radius: var(--radius-lg);
      background: #fff;
      color: #475569;
      font-size: 14px;
      font-weight: 500;
      border: 1px solid #CBD5E1;
      transition: all .2s ease;
      cursor: pointer;
    }
    .btn-secondary:hover {
      border-color: var(--brand-300);
      color: var(--brand-600);
      background: #FAFCFE;
    }
    .icon-btn {
      width: 36px;
      height: 36px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #64748B;
      transition: all .2s ease;
    }
    .icon-btn:hover {
      background: var(--brand-50);
      color: var(--brand-600);
    }

    /* ===== Hero ===== */
    .hero-bg {
      position: relative;
      background: radial-gradient(ellipse at 20% 0%, #E8F1F6 0%, transparent 60%);
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--brand-50);
      color: var(--brand-700);
      font-size: 13px;
      font-weight: 500;
      padding: 6px 14px;
      border-radius: var(--radius-full);
    }
    .hero-image-frame {
      position: relative;
    }
    .hero-image-frame::before {
      content: '';
      position: absolute;
      top: 12px;
      left: 12px;
      right: -12px;
      bottom: -12px;
      border: 1px solid rgba(212, 173, 92, .5);
      border-radius: 1rem;
      z-index: 0;
    }
    .hero-image-frame img {
      position: relative;
      z-index: 1;
    }
    .hero-float-card {
      position: absolute;
      bottom: -20px;
      left: -20px;
      z-index: 2;
      background: #fff;
      border-radius: 0.75rem;
      box-shadow: var(--shadow-card);
      padding: 14px 18px;
      display: flex;
      align-items: center;
      gap: 10px;
    }

    /* ===== 区块标题装饰 ===== */
    .section-title {
      position: relative;
      font-weight: 700;
      line-height: 1.2;
    }
    .section-title::before {
      content: '';
      display: inline-block;
      width: 4px;
      height: 24px;
      background: var(--accent-400);
      border-radius: 2px;
      margin-right: 12px;
    }

    /* ===== 数据区 ===== */
    .stats-section {
      background: linear-gradient(135deg, #14303F 0%, #1D4D6A 100%);
      position: relative;
      overflow: hidden;
    }
    .stats-section::before {
      content: '';
      position: absolute;
      top: -60%;
      right: -20%;
      width: 500px;
      height: 500px;
      border-radius: 50%;
      background: rgba(212, 173, 92, .06);
    }
    .stat-number {
      font-size: 3.5rem;
      font-weight: 700;
      color: var(--accent-400);
      font-variant-numeric: tabular-nums;
      line-height: 1.1;
    }

    /* ===== 卡片 ===== */
    .card {
      background: #fff;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      border: 1px solid rgba(227, 232, 238, .6);
      transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease;
    }
    .card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
      border-color: var(--brand-200);
    }

    /* ===== 新闻卡片 ===== */
    .news-card {
      background: #fff;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      overflow: hidden;
      border: 1px solid rgba(227, 232, 238, .6);
      transition: box-shadow .2s ease, transform .2s ease;
    }
    .news-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }
    .news-badge {
      display: inline-block;
      padding: 4px 12px;
      border-radius: var(--radius-full);
      border: 1px solid rgba(212, 173, 92, .5);
      color: var(--accent-500);
      font-size: 12px;
      font-weight: 500;
      background: rgba(212, 173, 92, .06);
    }

    /* ===== 空态 ===== */
    .empty-state {
      border: 2px dashed #CBD5E1;
      border-radius: 1rem;
      background: rgba(240, 245, 248, .6);
      padding: 48px 24px;
      text-align: center;
      color: var(--text-secondary);
    }

    /* ===== FAQ手风琴 ===== */
    .faq-item {
      background: #fff;
      border-radius: var(--radius-card);
      border: 1px solid var(--border-color);
      overflow: hidden;
      transition: border-color .2s ease;
    }
    .faq-item.open {
      border-color: var(--brand-200);
    }
    .faq-btn {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 500;
      color: var(--text-primary);
      text-align: left;
      transition: background .2s ease;
    }
    .faq-btn:hover {
      background: #FAFCFE;
    }
    .faq-icon {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--brand-50);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-600);
      font-size: 16px;
      transition: transform .3s ease;
    }
    .faq-item.open .faq-icon {
      transform: rotate(180deg);
    }
    .faq-body {
      display: grid;
      grid-template-rows: 0fr;
      transition: grid-template-rows .3s ease;
      padding: 0 20px;
    }
    .faq-item.open .faq-body {
      grid-template-rows: 1fr;
    }
    .faq-body-inner {
      overflow: hidden;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      padding-bottom: 20px;
    }

    /* ===== CTA大卡 ===== */
    .cta-card {
      background: #fff;
      border-radius: 1.5rem;
      box-shadow: var(--shadow-card);
      border: 1px solid var(--border-color);
      position: relative;
      overflow: hidden;
    }
    .cta-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: linear-gradient(90deg, var(--accent-400), var(--brand-500), var(--accent-400));
    }
    .cta-bg {
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      opacity: .08;
    }
    .cta-content {
      position: relative;
      z-index: 1;
    }

    /* ===== 表单模态 ===== */
    .modal-overlay {
      position: fixed;
      inset: 0;
      z-index: 100;
      background: rgba(15, 23, 42, .45);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 20px;
      opacity: 0;
      visibility: hidden;
      transition: opacity .25s ease, visibility .25s ease;
    }
    .modal-overlay.show {
      opacity: 1;
      visibility: visible;
    }
    .modal-box {
      background: #fff;
      border-radius: 1.25rem;
      width: 100%;
      max-width: 480px;
      padding: 32px;
      box-shadow: 0 20px 60px rgba(15, 35, 55, .15);
      transform: translateY(20px) scale(.97);
      transition: transform .25s ease;
    }
    .modal-overlay.show .modal-box {
      transform: translateY(0) scale(1);
    }
    .modal-close {
      position: absolute;
      top: 16px;
      right: 16px;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: #94A3B8;
      transition: all .2s ease;
    }
    .modal-close:hover {
      background: #F1F5F9;
      color: #334155;
    }
    .form-input {
      width: 100%;
      height: 44px;
      border-radius: var(--radius-lg);
      border: 1px solid #CBD5E1;
      padding: 0 14px;
      font-size: 14px;
      color: var(--text-primary);
      transition: all .2s ease;
      background: #fff;
    }
    .form-input:focus {
      outline: none;
      border-color: var(--brand-300);
      box-shadow: 0 0 0 3px rgba(46, 111, 149, .12);
    }
    .form-input::placeholder {
      color: #94A3B8;
    }
    .form-label {
      display: block;
      font-size: 13px;
      font-weight: 500;
      color: var(--text-primary);
      margin-bottom: 6px;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: var(--brand-700);
      position: relative;
    }
    .site-footer::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: rgba(212, 173, 92, .4);
    }
    .footer-link {
      color: #A9BCC8;
      font-size: 14px;
      transition: color .2s ease;
      line-height: 1.8;
    }
    .footer-link:hover {
      color: #fff;
    }

    /* ===== 移动端抽屉 ===== */
    .mobile-drawer {
      position: fixed;
      inset: 0;
      z-index: 90;
      background: #fff;
      transform: translateX(100%);
      transition: transform .3s ease;
      display: flex;
      flex-direction: column;
      padding: 24px;
    }
    .mobile-drawer.open {
      transform: translateX(0);
    }
    .drawer-link {
      font-size: 22px;
      font-weight: 600;
      color: var(--text-primary);
      padding: 14px 0;
      border-bottom: 1px solid #F1F5F9;
      transition: color .2s ease;
    }
    .drawer-link:hover {
      color: var(--brand-600);
    }

    /* ===== 通用 ===== */
    .section {
      padding: 56px 0;
    }
    @media (min-width: 768px) {
      .section {
        padding: 96px 0;
      }
    }
    .text-secondary-custom {
      color: var(--text-secondary);
    }
    .link-arrow {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      color: var(--brand-600);
      font-size: 14px;
      font-weight: 500;
      transition: gap .2s ease;
    }
    .link-arrow:hover {
      gap: 8px;
    }

/* roulang page: category1 */
:root {
            --brand-50: #F0F5F8;
            --brand-100: #E1ECF2;
            --brand-200: #C3D8E3;
            --brand-500: #2E6F95;
            --brand-600: #255E80;
            --brand-700: #1D4D6A;
            --accent-400: #D4AD5C;
            --accent-500: #C29B4D;
            --page-bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --text-main: #1F2A33;
            --text-sub: #5A6B78;
            --border-light: #E3E8EE;
            --dark-text: #F1F7FA;
            --dark-sub: #A9BCC8;
            --radius-lg: 12px;
            --radius-xl: 16px;
            --radius-2xl: 20px;
            --shadow-card: 0 1px 3px rgba(15,35,55,.04), 0 10px 30px rgba(15,35,55,.06);
            --shadow-hover: 0 4px 12px rgba(15,35,55,.08), 0 16px 40px rgba(15,35,55,.10);
            --transition: all .2s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--page-bg);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }

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

        .container-x {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container-x {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(248, 250, 252, .85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid #E7ECF1;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 9999px;
            font-size: 14px;
            font-weight: 500;
            color: #5A6B78;
            transition: var(--transition);
            position: relative;
        }

        .nav-link:hover {
            background: var(--brand-50);
            color: var(--brand-600);
        }

        .nav-link.active {
            color: var(--brand-500);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            height: 4px;
            border-radius: 9999px;
            background: var(--accent-400);
        }

        .btn-primary {
            height: 44px;
            padding: 0 24px;
            border-radius: 12px;
            background: var(--brand-500);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--brand-700);
            transform: translateY(-1px);
        }

        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(46, 111, 149, .15);
        }

        .btn-ghost {
            height: 44px;
            padding: 0 24px;
            border-radius: 12px;
            background: #fff;
            border: 1px solid #CBD5E1;
            color: #334155;
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-ghost:hover {
            border-color: var(--brand-300, #A5C4D8);
            color: var(--brand-600);
        }

        .btn-dark-cta {
            height: 44px;
            padding: 0 24px;
            border-radius: 12px;
            background: transparent;
            border: 2px solid rgba(212, 173, 92, .6);
            color: var(--accent-400);
            font-weight: 600;
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            cursor: pointer;
        }

        .btn-dark-cta:hover {
            background: rgba(212, 173, 92, .2);
        }

        .search-box {
            height: 36px;
            width: 200px;
            background: #F1F5F9;
            border-radius: 12px;
            display: flex;
            align-items: center;
            padding: 0 12px;
            gap: 8px;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .search-box:hover {
            border-color: #CBD5E1;
        }

        .search-box:focus-within {
            border-color: var(--brand-200);
            box-shadow: 0 0 0 2px rgba(46, 111, 149, .1);
        }

        .search-box input {
            flex: 1;
            border: none;
            background: transparent;
            font-size: 13px;
            color: var(--text-main);
            outline: none;
            min-width: 0;
        }

        .search-box input::placeholder {
            color: #94A3B8;
        }

        .kbd-hint {
            font-size: 11px;
            padding: 2px 6px;
            border: 1px solid #E2E8F0;
            border-radius: 4px;
            color: #94A3B8;
            background: #fff;
            white-space: nowrap;
        }

        /* ===== 移动端抽屉 ===== */
        .mobile-drawer {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: #fff;
            z-index: 100;
            transform: translateX(100%);
            transition: transform .3s ease;
        }

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

        /* ===== 卡片 ===== */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

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

        /* ===== 标签 ===== */
        .chip {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 9999px;
            font-size: 13px;
            font-weight: 500;
            border: 1px solid rgba(212, 173, 92, .6);
            color: var(--accent-500);
            background: #fff;
            transition: var(--transition);
            cursor: pointer;
        }

        .chip:hover {
            background: var(--brand-50);
            color: var(--brand-600);
            border-color: var(--brand-200);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--brand-700);
        }

        .footer-link {
            font-size: 14px;
            color: var(--dark-sub);
            transition: var(--transition);
        }

        .footer-link:hover {
            color: #fff;
        }

        /* ===== 分类页hero ===== */
        .category-hero {
            background: radial-gradient(ellipse 600px 300px at 20% 0%, rgba(232, 241, 246, .9), transparent 70%);
        }

        .gold-line {
            width: 48px;
            height: 4px;
            border-radius: 2px;
            background: var(--accent-400);
        }

        /* ===== FAQ手风琴 ===== */
        .faq-item {
            background: #fff;
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: border-color .2s ease;
        }

        .faq-item:focus-within,
        .faq-item.active {
            border-color: var(--brand-200);
        }

        .faq-question {
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            user-select: none;
        }

        .faq-arrow {
            width: 28px;
            height: 28px;
            border-radius: 9999px;
            border: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform .3s ease;
            flex-shrink: 0;
            font-size: 14px;
            color: var(--brand-500);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
        }

        .faq-answer-inner {
            padding: 0 24px 24px;
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-sub);
        }

        /* ===== 表单模态 ===== */
        .modal-mask {
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, .4);
            z-index: 200;
            display: none;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity .25s ease;
        }

        .modal-mask.show {
            display: flex;
            opacity: 1;
        }

        .modal-box {
            width: calc(100% - 32px);
            max-width: 400px;
            background: #fff;
            border-radius: 20px;
            padding: 32px;
            transform: translateY(12px) scale(.98);
            transition: transform .25s ease;
            max-height: 90vh;
            overflow-y: auto;
        }

        .modal-mask.show .modal-box {
            transform: translateY(0) scale(1);
        }

        .modal-box .form-input {
            width: 100%;
            height: 44px;
            border-radius: 12px;
            border: 1px solid #CBD5E1;
            padding: 0 14px;
            font-size: 14px;
            color: var(--text-main);
            background: #fff;
            outline: none;
            transition: var(--transition);
        }

        .modal-box .form-input:focus {
            border-color: var(--brand-200);
            box-shadow: 0 0 0 3px rgba(46, 111, 149, .08);
        }

        body.modal-open {
            overflow: hidden;
        }

        /* ===== 表格 ===== */
        .content-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            margin: 24px 0;
        }

        .content-table th {
            background: var(--brand-50);
            font-weight: 600;
            text-align: left;
            padding: 12px;
            border: 1px solid #E2E8F0;
        }

        .content-table td {
            padding: 12px;
            border: 1px solid #E2E8F0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 768px) {
            .menu-mobile-btn {
                display: flex !important;
            }

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

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

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

        @media (min-width: 769px) {
            .menu-mobile-btn {
                display: none !important;
            }
        }

        @media (max-width: 520px) {
            .btn-primary,
            .btn-ghost {
                width: 100%;
                padding: 0 16px;
            }

            .hero-title {
                font-size: 30px !important;
            }
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.25;
            position: relative;
            padding-left: 14px;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            border-radius: 2px;
            background: var(--accent-400);
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 24px;
            }
        }

        .stat-number {
            font-size: 44px;
            font-weight: 700;
            color: var(--accent-400);
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        @media (max-width: 768px) {
            .stat-number {
                font-size: 34px;
            }
        }

        .topic-card {
            transition: var(--transition);
        }

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

        /* 图片hover */
        .img-zoom {
            overflow: hidden;
        }

        .img-zoom img {
            transition: transform .5s ease;
        }

        .img-zoom:hover img {
            transform: scale(1.03);
        }

/* roulang page: article */
:root {
  --brand-50: #F0F5F8;
  --brand-100: #E1EDF2;
  --brand-200: #C5DCE6;
  --brand-300: #9CC3D3;
  --brand-400: #5D93AE;
  --brand-500: #2E6F95;
  --brand-600: #245C7A;
  --brand-700: #1D4D6A;
  --brand-800: #173C54;
  --brand-900: #112C3F;
  --accent-400: #D4AD5C;
  --accent-500: #C29B4D;
  --page-bg: #F8FAFC;
  --card-bg: #FFFFFF;
  --text-main: #1F2A33;
  --text-sub: #5A6B78;
  --text-light: #8DA0AE;
  --border-line: #E3E8EE;
  --dark-bg: #14303F;
  --dark-text: #F1F7FA;
  --dark-sub: #A9BCC8;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --shadow-card: 0 1px 3px rgba(15,35,55,.04), 0 10px 30px rgba(15,35,55,.06);
  --shadow-card-hover: 0 4px 12px rgba(15,35,55,.08), 0 16px 40px rgba(15,35,55,.10);
  --container-max: 1280px;
  --container-pad: 24px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--page-bg);
  color: var(--text-main);
  font-size: 16px;
  line-height: 1.75;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }
.container-x {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}
@media (max-width: 768px) {
  .container-x { padding-left: 16px; padding-right: 16px; }
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(248,250,252,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #E7ECF1;
}
.logo-mark {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--accent-400), var(--accent-500));
  flex-shrink: 0;
}
.nav-link {
  position: relative;
  padding: 8px 14px;
  border-radius: 9999px;
  font-size: 14px;
  font-weight: 500;
  color: #475569;
  transition: background-color .2s, color .2s;
}
.nav-link:hover {
  background: var(--brand-50);
  color: var(--brand-600);
}
.nav-link.active {
  color: var(--brand-600);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  border-radius: 9999px;
  background: var(--accent-500);
}
.search-box {
  width: 200px;
  height: 36px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  background: #F1F5F9;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: border-color .2s, box-shadow .2s;
}
.search-box:hover {
  border-color: #CBD5E1;
}
.search-box:focus-within {
  border-color: var(--brand-300);
  box-shadow: 0 0 0 3px rgba(46,111,149,.12);
}
.search-box input {
  width: 100%;
  background: transparent;
  border: none;
  outline: none;
  font-size: 14px;
  color: var(--text-main);
}
.search-box kbd {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 6px;
  background: #fff;
  border: 1px solid #E2E8F0;
  color: #94A3B8;
  white-space: nowrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: 10px;
  background: var(--brand-500);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  transition: background-color .2s, transform .2s, box-shadow .2s;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary:hover {
  background: var(--brand-700);
  transform: translateY(-1px);
}
.btn-primary:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(46,111,149,.15);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-sm {
  height: 36px;
  padding: 0 16px;
  font-size: 14px;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 24px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid #CBD5E1;
  color: #334155;
  font-size: 14px;
  font-weight: 500;
  transition: border-color .2s, color .2s, transform .2s;
  cursor: pointer;
}
.btn-secondary:hover {
  border-color: var(--brand-300);
  color: var(--brand-600);
  transform: translateY(-1px);
}
.btn-secondary:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(46,111,149,.12);
}
.category-chip {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 14px;
  border-radius: 9999px;
  font-size: 13px;
  color: var(--accent-500);
  background: #fff;
  border: 1px solid var(--accent-400);
  font-weight: 500;
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  height: 26px;
  padding: 0 12px;
  border-radius: 9999px;
  font-size: 13px;
  color: #55636E;
  background: #F1F5F9;
  transition: background-color .2s, color .2s;
}
.tag-chip:hover {
  background: var(--brand-50);
  color: var(--brand-600);
}
.form-input {
  width: 100%;
  height: 44px;
  padding: 0 14px;
  border-radius: 10px;
  border: 1px solid #CBD5E1;
  font-size: 14px;
  color: var(--text-main);
  background: #fff;
  transition: border-color .2s, box-shadow .2s;
}
.form-input:focus {
  outline: none;
  border-color: var(--brand-300);
  box-shadow: 0 0 0 3px rgba(46,111,149,.12);
}
.form-input::placeholder {
  color: #94A3B8;
}
.article-body {
  font-size: 17px;
  line-height: 1.9;
  color: #2A3540;
}
.article-body > p {
  margin-bottom: 24px;
}
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  color: #1F2A33;
  margin-top: 48px;
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 4px solid var(--accent-400);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  color: #1F2A33;
  margin-top: 32px;
  margin-bottom: 12px;
  line-height: 1.4;
}
.article-body h4 {
  font-size: 17px;
  font-weight: 600;
  color: #1F2A33;
  margin-top: 24px;
  margin-bottom: 8px;
}
.article-body img {
  border-radius: 12px;
  width: 100%;
  margin: 28px 0 8px;
  box-shadow: var(--shadow-card);
}
.article-body figure {
  margin: 28px 0;
}
.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
  margin-top: 8px;
}
.article-body blockquote {
  border-left: 4px solid var(--accent-400);
  background: rgba(240,245,248,.6);
  padding: 20px 24px;
  border-radius: 0 12px 12px 0;
  margin: 28px 0;
  color: #4A5A66;
}
.article-body blockquote p {
  margin-bottom: 0;
}
.article-body pre {
  background: #F1F5F9;
  border-radius: 10px;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 28px 0;
  font-size: 13px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  line-height: 1.7;
}
.article-body code {
  background: #F1F5F9;
  border-radius: 6px;
  padding: 2px 6px;
  font-size: 13px;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  color: #B33A5B;
}
.article-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: inherit;
}
.article-body ul,
.article-body ol {
  margin: 20px 0 24px;
  padding-left: 28px;
  line-height: 1.8;
}
.article-body ul li {
  list-style: disc;
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-body ul li::marker {
  color: var(--brand-500);
}
.article-body ol li {
  list-style: decimal;
  margin-bottom: 8px;
  padding-left: 4px;
}
.article-body ol li::marker {
  color: var(--brand-500);
  font-weight: 600;
}
.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
  display: block;
  overflow-x: auto;
}
.article-body table th,
.article-body table td {
  border: 1px solid #E2E8F0;
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
}
.article-body table th {
  background: var(--brand-50);
  font-weight: 600;
  color: #1F2A33;
}
.article-body a {
  color: var(--brand-600);
  border-bottom: 1px solid transparent;
  transition: border-color .2s;
}
.article-body a:hover {
  border-bottom-color: var(--brand-400);
}
.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.site-footer {
  background: var(--brand-700);
  padding-top: 64px;
  padding-bottom: 32px;
  border-top: 1px solid rgba(194,155,77,.35);
}
.footer-link {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: var(--dark-sub);
  transition: color .2s, padding-left .2s;
}
.footer-link:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-link:focus {
  color: #fff;
  outline: 2px solid var(--accent-400);
  outline-offset: 4px;
  border-radius: 4px;
}
#mobile-drawer {
  transform: translateX(100%);
  transition: transform .3s ease-in-out;
}
#mobile-drawer.open {
  transform: translateX(0);
}
#modal-overlay {
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity .25s ease;
}
#modal-overlay.open {
  display: flex;
  opacity: 1;
}
.modal-panel {
  transform: translateY(16px) scale(.96);
  transition: transform .25s ease;
}
#modal-overlay.open .modal-panel {
  transform: translateY(0) scale(1);
}
body.modal-open {
  overflow: hidden;
}
.toast-msg {
  transition: opacity .3s ease, transform .3s ease;
  opacity: 0;
  transform: translateY(-12px);
  pointer-events: none;
}
.toast-msg.show {
  opacity: 1;
  transform: translateY(0);
}
.related-card img {
  transition: transform .3s ease;
}
.related-card:hover img {
  transform: scale(1.04);
}
.breadcrumb-wrap {
  background: #fff;
  border-bottom: 1px solid #EDF1F4;
}
.breadcrumb-wrap a {
  transition: color .2s;
}
.breadcrumb-wrap a:hover {
  color: var(--brand-600);
}
@media (max-width: 1024px) {
  .search-box { display: none; }
}
@media (max-width: 768px) {
  .desktop-nav { display: none; }
  .ld-desktop { display: none; }
}
@media (min-width: 769px) {
  .mobile-only { display: none; }
}