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

    body {
      font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
      background: #f8fafc;
      color: #0f172a;
      line-height: 1.5;
    }

    /* 主容器 */
    .page-container {
      max-width: 1400px;
      margin: 0 auto;
      padding: 2rem 1.5rem 3rem;
    }

    /* 头部导航栏 */
    .top-bar {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 1rem;
      margin-bottom: 2rem;
      padding-bottom: 1rem;
      border-bottom: 1px solid #e2e8f0;
    }

    .logo-area h1 {
      font-size: 1.6rem;
      font-weight: 700;
      background: linear-gradient(135deg, #2563eb, #1e40af);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      letter-spacing: -0.3px;
    }

    .logo-area p {
      font-size: 0.85rem;
      color: #475569;
      margin-top: 0.2rem;
    }

    .home-link {
      background: #ffffff;
      border: 1px solid #cbd5e1;
      padding: 0.5rem 1.2rem;
      border-radius: 40px;
      text-decoration: none;
      color: #1e293b;
      font-weight: 500;
      transition: all 0.2s;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
    }

    .home-link:hover {
      background: #2563eb;
      border-color: #2563eb;
      color: white;
      box-shadow: 0 4px 8px rgba(37, 99, 235, 0.2);
    }

    /* 搜索与工具条 */
    .toolbar {
      background: white;
      border-radius: 28px;
      padding: 0.3rem;
      box-shadow: 0 1px 3px rgba(0,0,0,0.05);
      border: 1px solid #e2e8f0;
      margin-bottom: 2rem;
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 1rem;
    }

    .search-box {
      flex: 2;
      min-width: 200px;
      display: flex;
      align-items: center;
      background: #f1f5f9;
      border-radius: 40px;
      padding: 0.4rem 1rem;
      gap: 0.5rem;
    }

    .search-box i {
      color: #64748b;
      font-weight: normal;
      font-style: normal;
    }

    .search-box input {
      flex: 1;
      border: none;
      background: transparent;
      padding: 0.6rem 0;
      font-size: 0.95rem;
      outline: none;
    }

    .search-box input::placeholder {
      color: #94a3b8;
    }

    .clear-search {
      background: none;
      border: none;
      cursor: pointer;
      font-size: 1.1rem;
      color: #94a3b8;
      display: none;
      padding: 0 0.2rem;
    }

    .stats {
      font-size: 0.85rem;
      color: #475569;
      background: #f1f5f9;
      padding: 0.3rem 1rem;
      border-radius: 30px;
      white-space: nowrap;
    }

    /* 字母快捷导航 (sticky) */
    .alpha-nav {
      position: sticky;
      top: 1rem;
      z-index: 20;
      background: rgba(255,255,255,0.92);
      backdrop-filter: blur(8px);
      border-radius: 60px;
      padding: 0.6rem 1rem;
      margin-bottom: 2rem;
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 0.3rem 0.6rem;
      box-shadow: 0 4px 12px rgba(0,0,0,0.03);
      border: 1px solid #e2e8f0;
    }

    .alpha-nav a {
      display: inline-block;
      width: 2.2rem;
      text-align: center;
      font-weight: 600;
      text-decoration: none;
      color: #334155;
      background: #f1f5f9;
      border-radius: 40px;
      padding: 0.3rem 0;
      font-size: 0.9rem;
      transition: 0.2s;
    }

    .alpha-nav a:hover {
      background: #2563eb;
      color: white;
      transform: translateY(-2px);
    }

    /* 城市列表主区域 - 重新定义原有类名样式 */
    #content {
      margin-top: 0.5rem;
    }

    /* 字母区块 */
    .content-letter {
      margin-bottom: 2.5rem;
      scroll-margin-top: 80px;
    }

    .letter-badge {
      display: inline-block;
      font-size: 2rem;
      font-weight: 800;
      background: #eef2ff;
      color: #1e40af;
      width: 3rem;
      height: 3rem;
      line-height: 3rem;
      text-align: center;
      border-radius: 1.5rem;
      margin-bottom: 1.2rem;
      box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    }

    /* 省份卡片网格布局 (原 .content-province 改为网格卡片) */
    .content-province {
      background: white;
      border-radius: 24px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
      margin-bottom: 1.5rem;
      padding: 1.2rem 1.5rem 1.5rem;
      transition: all 0.2s;
      border: 1px solid #e9eef3;
    }

    .content-province-title {
      font-size: 1.5rem;
      font-weight: 700;
      color: #0f172a;
      margin-bottom: 1rem;
      padding-left: 0.5rem;
      border-left: 5px solid #3b82f6;
      letter-spacing: -0.2px;
    }

    /* 城市列表 flex 网格 */
    .content-cities {
      display: flex;
      flex-wrap: wrap;
      gap: 0.7rem 1rem;
      align-items: center;
    }

    .content-city {
      background: #f8fafc;
      padding: 0.3rem 1rem;
      border-radius: 40px;
      font-size: 0.9rem;
      text-decoration: none;
      color: #1e293b;
      transition: all 0.2s ease;
      border: 1px solid #e2e8f0;
      line-height: 1.4;
    }

    .content-city:hover {
      background: #2563eb;
      color: white;
      border-color: #2563eb;
      transform: translateY(-2px);
      box-shadow: 0 6px 12px rgba(37, 99, 235, 0.15);
    }

    /* 隐藏被搜索过滤掉的内容 */
    .content-city.hidden-city {
      display: none;
    }

    .content-province.hidden-province {
      display: none;
    }

    .content-letter.hidden-letter {
      display: none;
    }

    /* 原样式中的旧三角等隐藏，采用新设计 */
    .content-province-triangle, .content-letter-panel {
      display: none;
    }

    /* 保留一些原有内联样式覆盖，全部由新样式接管 */
    .clb {
      clear: both;
    }

    /* 返回顶部 */
    .go-top {
      position: fixed;
      bottom: 2rem;
      right: 1.5rem;
      background: #2563eb;
      color: white;
      width: 44px;
      height: 44px;
      border-radius: 30px;
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      opacity: 0;
      transition: 0.2s;
      box-shadow: 0 4px 12px rgba(0,0,0,0.2);
      font-size: 1.5rem;
      z-index: 99;
      border: none;
      cursor: pointer;
    }

    .go-top.visible {
      opacity: 1;
    }

    footer {
      text-align: center;
      margin-top: 3rem;
      padding-top: 2rem;
      border-top: 1px solid #e2e8f0;
      font-size: 0.85rem;
      color: #5b6e8c;
    }

    @media (max-width: 768px) {
      .page-container {
        padding: 1rem;
      }
      .content-province {
        padding: 1rem;
      }
      .content-province-title {
        font-size: 1.3rem;
      }
      .alpha-nav a {
        width: 1.8rem;
        font-size: 0.8rem;
      }
      .toolbar {
        flex-direction: column;
        align-items: stretch;
      }
      .stats {
        text-align: center;
      }
    }

    /* 辅助图标模拟 */
    .icon-home::before {
      content: "🏠";
      font-size: 1rem;
    }
    .icon-search::before {
      content: "🔍";
    }