/* 通用样式 */
  * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
  }
  body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      background-color: #f0f4f8; /* 背景颜色 */
      color: #333; /* 文字颜色 */
      line-height: 1.6;
      padding: 20px;
  }
  .container {
      width: 100%;
      max-width: 800px;
      margin: 0 auto;
      background-color: #fff; /* 容器背景颜色 */
      border-radius: 12px;
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
      padding: 30px;
  }
  h1 {
      text-align: center;
      margin-bottom: 20px;
      color: #4a90e2; /* 主标题颜色 */
  }
  .section {
      margin-bottom: 20px;
      background-color: #f8f9fa; /* 部分背景颜色 */
      border-radius: 8px;
      padding: 15px;
      box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  }
  .checkbox-group {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-bottom: 15px;
  }
  .checkbox-group label {
      display: flex;
      align-items: center;
      gap: 5px;
      background-color: #e9ecef; /* 复选框背景颜色 */
      padding: 10px 15px;
      border-radius: 6px;
      transition: background-color 0.3s;
  }
  .checkbox-group label:hover {
      background-color: #d3d3d3; /* 复选框悬停效果 */
  }
  .input-group {
      margin-bottom: 15px;
  }
  .input-group label {
      display: block;
      margin-bottom: 5px;
      color: #2c3e50;
  }
  .input-group input {
      width: 100%;
      padding: 10px;
      border: 1px solid #ced4da;
      border-radius: 6px;
      background-color: #f9fafb; /* 输入框背景颜色 */
      transition: border-color 0.3s;
  }
  .input-group input:focus {
      border-color: #4a90e2; /* 输入框聚焦状态边框颜色 */
      outline: none;
  }
  .generate-btn {
      width: 100%;
      padding: 12px;
      background-color: #4a90e2;
      color: white;
      border: none;
      border-radius: 8px;
      cursor: pointer;
      transition: background-color 0.3s;
      font-size: 16px;
  }
  .generate-btn:hover {
      background-color: #357abd; /* 按钮悬停效果 */
  }
  .password-output {
      display: flex;
      align-items: center;
      background-color: #e9ecef;
      padding: 10px;
      border-radius: 8px;
      margin-bottom: 10px;
      flex-wrap: wrap;
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }
  .password-output input {
      flex-grow: 1;
      min-width: 100px;
      margin-right: 10px;
      border: none;
      background: transparent;
      color: #333; /* 密码输入框文字颜色 */
      font-size: 16px;
  }
  .copy-btn, .save-btn {
      background-color: #4a90e2;
      color: white;
      border: none;
      padding: 8px 15px;
      border-radius: 6px;
      cursor: pointer;
      margin-left: 5px;
      transition: background-color 0.3s;
  }
  .copy-btn:hover, .save-btn:hover {
      background-color: #357abd; /* 按钮悬停效果 */
  }
  .saved-passwords-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 10px;
  }
  .saved-password-item {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background-color: white;
      margin-bottom: 10px;
      padding: 10px;
      border-radius: 6px;
      box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  }
  .clear-saved-btn, .export-saved-btn {
      background-color: #e74c3c;
      color: white;
      border: none;
      padding: 8px 15px;
      border-radius: 6px;
      cursor: pointer;
      margin-left: 5px;
      transition: background-color 0.3s;
  }
  .clear-saved-btn:hover, .export-saved-btn:hover {
      background-color: #c0392b; /* 按钮悬停效果 */
  }
  footer {
      margin-top: 15px;
      text-align: center;
      font-size: 14px;
      color: #666;
  }
  a {
      color: inherit;
      text-decoration: none;
      border-bottom: 1px dotted transparent;
      transition: all 0.3s ease;
  }
  a:hover {
      color: #007BFF;
      border-bottom: 1px dotted #007BFF;
  }