
<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="gb2312">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>页面未找到 - 404</title>
    <style>
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            height: 100vh;
            margin: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            text-align: center;
            color: #333;
        }
        .container {
            background: white;
            padding: 3rem;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            max-width: 600px;
            width: 90%;
        }
        h1 {
            font-size: 5px;
            margin: 0;
            color: #ff4757;
        }
        p {
            font-size: 1.2rem;
            margin: 1.5rem 0;
        }
        .countdown {
            font-weight: bold;
            color: #ff4757;
        }
        a {
            color: #3742fa;
            text-decoration: none;
            font-weight: bold;
        }
        a:hover {
            text-decoration: underline;
        }
        .animation {
            animation: bounce 2s infinite;
        }
        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {transform: translateY(0);}
            40% {transform: translateY(-20px);}
            60% {transform: translateY(-10px);}
        }
    </style>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"></head>
<body>
    <div class="container">
        <div class="animation">
            <h1>404</h1>
        </div>
        <h2>页面未找到</h2>
        <p>抱歉，您访问的页面不存在或已被移除。</p>
        <p>将在 <span class="countdown" id="countdown">3</span> 秒后自动跳转到<a href="/">首页</a></p>
        <p>如果未自动跳转，请点击上方链接</p>
    </div>

    <script>
        let seconds = 3;
        const countdownElement = document.getElementById('countdown');
        
        const timer = setInterval(() => {
            seconds--;
            countdownElement.textContent = seconds;
            
            if (seconds <= 0) {
                clearInterval(timer);
                window.location.href = '/';
            }
        }, 1000);
    </script>
</body>
</html>
<code_end>