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

    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: #f4f4f4;
      color: #333;
      line-height: 1.6;
    }

    /* 顶部导航栏样式 */
    .top-nav {
      background-color: #0b3c7d;
      color: #fff;
      display: flex;
      justify-content: flex-start;
      align-items: center;
      padding: 15px 25px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
      position: sticky;
      top: 0;
      z-index: 100;
    }

    .top-nav .logo {
      font-size: 1.2rem;
      font-weight: bold;
      margin-right: 30px;
      color: #fff;
      text-decoration: none;
    }

    .top-nav .nav-item {
      cursor: pointer;
      color: #fff;
      padding: 8px 15px;
      border-radius: 4px;
      transition: background-color 0.3s ease;
      text-decoration: none;
      margin-right: 10px;
    }

    .top-nav .nav-item:hover {
      background-color: rgba(255, 255, 255, 0.15);
    }

    .top-nav .nav-item.active {
      background-color: rgba(255, 255, 255, 0.2);
    }

    /* 容器样式 - 用于居中内容并设置与导航栏的间距 */
    .container {
      max-width: 1400px;
      margin: 30px auto;
      padding: 0 20px;
      display: flex;
      min-height: calc(100vh - 140px);
    }

    /* 左侧侧边栏样式 */
    .sidebar {
      width: 180px;
      background-color: #fff;
      border-radius: 8px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
      transition: all 0.3s ease;
      overflow: hidden;
    }

    .sidebar .sidebar-menu {
      list-style: none;
    }

    .sidebar .sidebar-menu li {
      padding: 14px 20px;
      cursor: pointer;
      color: #333;
      transition: all 0.3s ease;
    }

    .sidebar .sidebar-menu li:hover {
      background-color: #f0f0f0;
      padding-left: 25px;
    }

    .sidebar .sidebar-menu li.active {
      background-color: #f8d7da;
      color: #721c24;
      border-left: 4px solid #dc3545;
    }

    /* 主要内容区域样式 */
    .main-content {
      flex: 1;
      margin-left: 25px;
      background-color: #fff;
      border-radius: 8px;
      padding: 30px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .main-content h2 {
      margin-bottom: 25px;
      color: #0b3c7d;
      padding-bottom: 10px;
      border-bottom: 1px solid #eee;
    }

    .main-content .search-bar {
      display: flex;
      align-items: center;
      margin-bottom: 25px;
      padding: 15px;
      background-color: #f9f9f9;
      border-radius: 6px;
      flex-wrap: wrap;
      gap: 15px;
    }

    .main-content .search-bar label {
      color: #555;
      margin-right: 5px;
    }

    .main-content .search-bar select,
    .main-content .search-bar input {
      padding: 8px 12px;
      border: 1px solid #ddd;
      border-radius: 4px;
      font-size: 14px;
      transition: border-color 0.3s ease, box-shadow 0.3s ease;
    }

    .main-content .search-bar select:focus,
    .main-content .search-bar input:focus {
      outline: none;
      border-color: #0b3c7d;
      box-shadow: 0 0 0 2px rgba(11, 60, 125, 0.1);
    }

    .main-content .search-bar button {
      padding: 8px 20px;
      background-color: #dc3545;
      color: #fff;
      border: none;
      border-radius: 4px;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.2s ease;
      font-size: 14px;
    }

    .main-content .search-bar button:hover {
      background-color: #c82333;
      transform: translateY(-1px);
    }

    .main-content .table-container {
      overflow-x: auto;
      border-radius: 6px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    }

    .main-content table {
      width: 100%;
      border-collapse: collapse;
    }

    .main-content table thead {
      background-color: #f1f5f9;
    }

    .main-content table th,
    .main-content table td {
      border: 1px solid #eee;
      padding: 12px 15px;
      text-align: left;
    }

    .main-content table tr:hover {
      background-color: #f9f9f9;
    }

    .main-content table tbody tr:nth-child(even) {
      background-color: #f9f9f9;
    }

    .main-content .pagination {
      margin-top: 25px;
      text-align: center;
    }

    .main-content .pagination span {
      display: inline-block;
      padding: 8px 14px;
      margin: 0 4px;
      background-color: #fff;
      border: 1px solid #ddd;
      border-radius: 4px;
      cursor: pointer;
      transition: all 0.3s ease;
    }

    .main-content .pagination span:hover:not(.active) {
      border-color: #0b3c7d;
      color: #0b3c7d;
    }

    .main-content .pagination span.active {
      background-color: #dc3545;
      color: #fff;
      border-color: #dc3545;
    }

    /* 链接样式优化 */
    .main-content table td a {
      color: #007bff;
      text-decoration: none;
      transition: color 0.3s ease;
    }

    .main-content table td a:hover {
      color: #0056b3;
      text-decoration: underline;
    }

    /* 状态标签样式 */
    .status-tag {
      display: inline-block;
      padding: 3px 8px;
      border-radius: 4px;
      font-size: 13px;
      font-weight: 500;
    }

    .status-allocated {
      background-color: #e3f2fd;
      color: #f35c1e;
    }