<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 页面不存在</title>
    <style>
        *{margin:0;padding:0;box-sizing:border-box;font-family:system-ui}
        body{
            min-height:100vh;
            display:flex;
            flex-direction:column;
            align-items:center;
            justify-content:center;
            background:#f5f7fa;
            color:#333;
        }
        .wrap{text-align:center;padding:20px}
        .num{
            font-size:120px;
            font-weight:bold;
            color:#409eff;
            line-height:1;
            animation: shake 2.5s infinite ease-in-out;
        }
        @keyframes shake{
            0%,100%{transform:translateY(0)}
            50%{transform:translateY(-12px)}
        }
        .tip{font-size:18px;margin:20px 0;color:#666}
        .btn{
            display:inline-block;
            padding:12px 32px;
            background:#409eff;
            color:#fff;
            text-decoration:none;
            border-radius:6px;
            transition:0.3s;
        }
        .btn:hover{background:#337ecc}
    </style>
</head>
<body>
    <div class="wrap">
        <div class="num">404</div>
        <p class="tip">抱歉，您访问的页面不存在或已被删除</p>
        <a href="http://xiaoqiangjz.cn/" class="btn">返回首页</a>
    </div>
</body>
</html>