<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404 - 页面未找到</title>
    <style>
        /* 全局样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: Arial, sans-serif;
            background-color: #f4f4f9;
            color: #333;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }

        .error-page {
            text-align: center;
            max-width: 600px;
            width: 100%;
            padding: 2rem;
            background-color: white;
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }

        .error-page h1 {
            font-size: 3rem;
            color: #d74b4b;
            margin-bottom: 1rem;
        }

        .error-page p {
            line-height: 1.6;
            margin-bottom: 1rem;
        }

        .error-page .lead {
            font-size: 1.2rem;
            font-weight: bold;
            margin-bottom: 1rem;
        }

        .error-page a {
            display: inline-block;
            margin-top: 1rem;
            padding: 0.5rem 1.5rem;
            font-size: 1rem;
            color: white;
            background-color: #d74b4b;
            border: none;
            border-radius: 4px;
            text-decoration: none;
            transition: background-color 0.3s ease;
        }

        .error-page a:hover {
            background-color: #c44141;
        }

        .error-page a.btn-back {
            margin-left: 1rem;
            background-color: #5cb85c;
        }

        .error-page a.btn-back:hover {
            background-color: #4cae4c;
        }

        footer {
            margin-top: 2rem;
            font-size: 0.875rem;
            color: #777;
        }
    </style>
</head>
<body>
<div class="error-page">
    <div class="content">
        <h1>404</h1>
        <p class="lead">我们找不到您请求的页面。</p>
        <p>这可能是由于：<br>
            - 您输入了错误的URL<br>
            - 请求的页面已被删除或移动<br>
            - 服务器遇到了一些问题
        </p>
        <a href="/" class="btn-home">返回首页</a>
        <a href="javascript:history.back()" class="btn-back">返回上一页</a>
    </div>
</div>
</body>
</html>
