*{box-sizing:border-box}
  body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:#f8fafc;color:#0f172a}
  .line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
  a{text-decoration:none;color:inherit}
  button{font-family:inherit;cursor:pointer}
  ::-webkit-scrollbar{width:8px;height:8px}
  ::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:4px}
  .spinner{border:3px solid #e2e8f0;border-top-color:#2563eb;border-radius:50%;width:32px;height:32px;animation:spin 0.8s linear infinite}
  @keyframes spin{to{transform:rotate(360deg)}}