/* 基础重置 */
:root {
    --primary-color: #4361ee;
    --danger-color: #ef4444;
    --vip-gold: #f59e0b;
    --admin-red: #dc2626;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'segoe ui', system-ui, sans-serif;
  }
  
  /* 响应式布局 */
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
  }
  
  /* 导航栏 */
  .navbar {
    background: var(--primary-color);
    color: white;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
  }
  
  .navbar a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 1rem;
  }
  
  /* 工具卡片 */
  .tool-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 1.5rem;
    margin: 1rem 0;
    transition: transform 0.2s;
  }
  
  .tool-card:hover {
    transform: translatey(-3px);
  }
  
  /* vip标识 */
  .vip-badge {
    background: linear-gradient(45deg, #f59e0b, #d97706);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
  }
  
  /* 管理员专用样式 */
  [data-role="admin"] {
    border-left: 4px solid var(--admin-red);
  }
  
  /* 移动端适配 */
  @media (max-width: 768px) {
    .navbar {
      flex-direction: column;
      align-items: center;
    }
    
    .tool-card {
      margin: 0.5rem;
    }
  }