/* 全局设置 */
    *, *::before, *::after {
      box-sizing: border-box;
    }

    :root {
      --primary-green: #2E7D32;
      --hover-green: #81C784;
      --background: #F5FDF6;
      --error-red: #D32F2F;
      --text-dark: #1B5E20;
      --text-light: #FFFFFF;
      --border-color: #C8E6C9;
      --light-gray: #f0f0f0;
      --medium-gray: #e0e0e0;
      --dark-gray: #666;
      --focus-shadow: 0 0 0 3px rgba(46, 125, 50, 0.1);
    }

    body {
      font-family: 'Segoe UI', system-ui, sans-serif;
      line-height: 1.6;
      background: var(--background);
      color: var(--text-dark);
      max-width: 800px;
      margin: 2rem auto;
      padding: 0 1rem;
    }

    .container {
      background: white;
      border-radius: 12px;
      box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
      padding: 2rem;
      margin-bottom: 2rem;
    }

    h1 {
      color: var(--primary-green);
      text-align: center;
      margin-bottom: 2rem;
      font-size: 2.2rem;
    }

    .form-group {
      margin-bottom: 1.5rem;
      position: relative;
    }

    label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 600;
      color: var(--primary-green);
    }

    /* 统一所有输入框样式 */
    .form-control {
      width: 100%;
      padding: 0.8rem;
      border: 2px solid var(--border-color);
      border-radius: 8px;
      font-size: 1rem;
      transition: all 0.3s ease;
      height: 46px;
      box-sizing: border-box;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary-green);
      box-shadow: var(--focus-shadow);
    }

    /* 应用统一样式到所有输入元素 */
    input[type="text"],
    input[type="email"],
    select,
    textarea {
      composes: form-control;
    }

    .input-wrapper {
      display: flex;
      gap: 0.5rem;
    }

    /* 确保国家代码和下拉菜单宽度1:1 */
    .country-input-wrapper {
      flex: 1;
    }
    
    .dropdown-container {
      flex: 1;
      position: relative;
    }

    .dropdown-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0.8rem;
      border: 2px solid var(--border-color);
      border-radius: 8px;
      background: white;
      cursor: pointer;
      transition: all 0.3s ease;
      height: 46px;
      box-sizing: border-box;
    }

    .dropdown-header:hover {
      border-color: #aaa;
    }

    .dropdown-header.open {
      border-color: var(--primary-green);
      box-shadow: var(--focus-shadow);
    }

    .dropdown-header span {
      color: var(--dark-gray);
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .dropdown-arrow {
      width: 16px;
      height: 16px;
      transition: transform 0.3s ease;
      position: relative;
    }

    .dropdown-arrow::before,
    .dropdown-arrow::after {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 8px;
      height: 2px;
      background: var(--primary-green);
      transform-origin: center;
    }

    .dropdown-arrow::before {
      transform: translate(-50%, -50%) rotate(45deg);
    }

    .dropdown-arrow::after {
      transform: translate(-50%, -50%) rotate(-45deg);
    }

    .dropdown-header.open .dropdown-arrow {
      transform: rotate(180deg);
    }

    .dropdown-content {
      position: absolute;
      top: 100%;
      left: 0;
      right: 0;
      background: white;
      border: 2px solid var(--border-color);
      border-radius: 8px;
      margin-top: 0.5rem;
      box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
      z-index: 100;
      max-height: 300px;
      overflow-y: auto;
      display: none;
    }

    .dropdown-content.open {
      display: block;
    }

    .search-container {
      padding: 0.8rem;
      border-bottom: 1px solid var(--border-color);
      position: sticky;
      top: 0;
      background: white;
      z-index: 10;
    }

    .search-container input {
      width: 100%;
      padding: 0.5rem;
      border: 1px solid var(--border-color);
      border-radius: 4px;
    }

    .country-list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .country-item {
      padding: 0.8rem 1rem;
      cursor: pointer;
      border-bottom: 1px solid var(--light-gray);
      transition: background-color 0.2s;
      display: flex;
      justify-content: space-between;
    }

    .country-item:last-child {
      border-bottom: none;
    }

    .country-item:hover {
      background-color: var(--light-gray);
    }

    .country-item.selected {
      background-color: rgba(46, 125, 50, 0.1);
    }

    .country-name {
      flex-grow: 1;
    }

    .country-code {
      color: var(--primary-green);
      font-weight: 600;
      margin-left: 1rem;
    }

    .no-results {
      padding: 1rem;
      text-align: center;
      color: var(--dark-gray);
      font-style: italic;
    }

    .error-box {
      background: #FFEBEE;
      color: var(--error-red);
      padding: 1rem;
      border-radius: 8px;
      border: 2px solid var(--error-red);
      margin: 1.5rem 0;
    }

    .submit-btn {
      background: var(--primary-green);
      color: var(--text-light);
      padding: 1rem 2rem;
      border: none;
      border-radius: 8px;
      font-size: 1.1rem;
      cursor: pointer;
      transition: background 0.3s ease;
      width: 100%;
      font-weight: 600;
    }

    .submit-btn:hover {
      background: var(--hover-green);
    }

    .result-card {
      background: #E8F5E9;
      border-radius: 8px;
      padding: 1.5rem;
      margin-top: 2rem;
    }

    pre {
      background: white;
      padding: 1.5rem;
      border-radius: 6px;
      overflow-x: auto;
      font-family: 'Courier New', monospace;
      border: 1px solid #C8E6C9;
      cursor: pointer;
    }

    .download-btn {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: var(--primary-green);
      color: white;
      padding: 0.8rem 1.5rem;
      border-radius: 6px;
      text-decoration: none;
      transition: background 0.3s ease;
      margin-top: 1rem;
    }

    .download-btn:hover {
      background: var(--hover-green);
    }

    .download-group {
      display: flex;
      gap: 1rem;
      margin-top: 1.5rem;
    }

    .copy-btn {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: var(--primary-green);
      color: white;
      padding: 0.6rem 1.2rem;
      border-radius: 6px;
      border: none;
      cursor: pointer;
      transition: background 0.3s ease;
      font-size: 0.9rem;
    }

    .copy-btn:hover {
      background: var(--hover-green);
    }

    .pre-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 0.5rem;
    }

    .footer {
      text-align: center;
      padding: 2rem 0;
      margin-top: 2rem;
      color: #2E7D32;
      font-size: 0.9rem;
      border-top: 1px solid #E8F5E9;
    }

    .copyright {
      margin-bottom: 0.5rem;
    }

    .legal-links {
      display: flex;
      justify-content: center;
      gap: 1.5rem;
      margin-top: 0.5rem;
    }

    .legal-links a {
      color: #2E7D32;
      text-decoration: none;
      transition: color 0.3s ease;
    }

    .legal-links a:hover {
      color: var(--hover-green);
      text-decoration: underline;
    }
    
    /* 新增的安全提示样式 */
    .security-warning {
      background: #FFF8E1;
      border-left: 4px solid #FFC107;
      padding: 1rem;
      margin: 1rem 0;
      border-radius: 4px;
      display: flex;
      align-items: center;
      gap: 0.8rem;
    }
    
    .security-warning-icon {
      font-size: 1.5rem;
      color: #FF9800;
    }
    
    .security-warning-text {
      flex-grow: 1;
      color: #5D4037;
      font-weight: 500;
    }

/* 响应式优化 */
@media (max-width: 600px) {
  .btn-group {
    flex-direction: column;
  }
  
  .download-group {
    flex-direction: column;
    align-items: stretch;
  }
  
  .download-btn {
    text-align: center;
  }



.input-wrapper {
        flex-direction: column;
      }
      
      .dropdown-container {
        width: 100%;
      }
    }