<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  <title>页面暂时无法访问</title>
  <style>
    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
      background: linear-gradient(135deg, #f5f7fb 0%, #eef3f8 100%);
      color: #333;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px;
    }

    .error-page {
      width: 100%;
      max-width: 760px;
      background: #fff;
      border-radius: 18px;
      padding: 48px 36px;
      text-align: center;
      box-shadow: 0 18px 45px rgba(20, 40, 80, 0.08);
    }

    .error-icon {
      width: 88px;
      height: 88px;
      margin: 0 auto 24px;
      border-radius: 50%;
      background: #eef6ff;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #2f80ed;
      font-size: 42px;
      font-weight: 700;
    }

    h1 {
      margin: 0 0 16px;
      font-size: 30px;
      font-weight: 700;
      color: #1f2937;
    }

    .desc {
      margin: 0 auto 28px;
      max-width: 560px;
      font-size: 16px;
      line-height: 1.8;
      color: #666;
    }

    .actions {
      display: flex;
      justify-content: center;
      gap: 14px;
      flex-wrap: wrap;
      margin-top: 24px;
    }

    .btn {
      display: inline-block;
      min-width: 120px;
      padding: 12px 22px;
      border-radius: 999px;
      font-size: 15px;
      text-decoration: none;
      transition: all 0.2s ease;
      cursor: pointer;
    }

    .btn-primary {
      background: #2f80ed;
      color: #fff;
      box-shadow: 0 8px 18px rgba(47, 128, 237, 0.25);
    }

    .btn-primary:hover {
      background: #1c6ed6;
      transform: translateY(-1px);
    }

    .btn-secondary {
      background: #f3f4f6;
      color: #374151;
    }

    .btn-secondary:hover {
      background: #e5e7eb;
      transform: translateY(-1px);
    }

    .tips {
      margin-top: 34px;
      padding-top: 22px;
      border-top: 1px solid #edf0f3;
      font-size: 13px;
      color: #999;
      line-height: 1.7;
    }

    @media (max-width: 600px) {
      .error-page {
        padding: 36px 22px;
        border-radius: 14px;
      }

      h1 {
        font-size: 24px;
      }

      .desc {
        font-size: 15px;
      }

      .btn {
        width: 100%;
      }
    }
  </style>
</head>
<body>
  <main class="error-page">
    <div class="error-icon">!</div>

    <h1>页面暂时无法访问</h1>

    <p class="desc">
      很抱歉，当前页面遇到了一些问题，可能是页面不存在、链接已失效，或者服务器暂时无法处理请求。
      你可以返回首页，或稍后再试。
    </p>

    <div class="actions">
      <a class="btn btn-primary" href="/">返回首页</a>
      <a class="btn btn-secondary" href="javascript:history.back();">返回上一页</a>
    </div>

    <div class="tips">
      如果你是网站管理员，请检查网站配置、程序错误日志或服务器状态。<br />
      为了安全，当前页面不会显示具体错误详情。
    </div>
  </main>
</body>
</html>