<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>页面未找到 - 404错误</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
            color: #333;
            line-height: 1.6;
        }
        
        .container {
            max-width: 800px;
            width: 100%;
            text-align: center;
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            padding: 40px 30px;
            position: relative;
            overflow: hidden;
        }
        
        .container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(to right, #3498db, #2ecc71);
        }
        
        .error-code {
            font-size: 120px;
            font-weight: 800;
            color: #3498db;
            line-height: 1;
            margin-bottom: 10px;
            text-shadow: 3px 3px 0 rgba(52, 152, 219, 0.2);
        }
        
        h1 {
            font-size: 32px;
            margin-bottom: 20px;
            color: #2c3e50;
        }
        
        p {
            font-size: 18px;
            margin-bottom: 30px;
            color: #7f8c8d;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .home-button {
            display: inline-block;
            background: linear-gradient(to right, #3498db, #2ecc71);
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
            margin-top: 10px;
        }
        
        .home-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 7px 20px rgba(52, 152, 219, 0.4);
        }
        
        .illustration {
            max-width: 300px;
            margin: 30px auto;
            opacity: 0.8;
        }
        
        .links {
            margin-top: 30px;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .links a {
            color: #3498db;
            text-decoration: none;
            transition: color 0.3s;
            font-size: 15px;
        }
        
        .links a:hover {
            color: #2ecc71;
            text-decoration: underline;
        }
        
        @media (max-width: 600px) {
            .error-code {
                font-size: 80px;
            }
            
            h1 {
                font-size: 24px;
            }
            
            p {
                font-size: 16px;
            }
            
            .container {
                padding: 30px 20px;
            }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="error-code">404</div>
        <h1>哎呀！页面未找到</h1>
        <p>抱歉，您正在寻找的页面可能已被移动、删除或暂时不可用。请检查URL是否正确，或返回我们的主页。</p>
        
        <svg class="illustration" viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
            <path fill="#3498db" d="M45.2,-58.5C58.2,-49.1,68.1,-33.8,71.5,-16.9C74.9,0.1,71.7,18.6,62.8,33.5C53.9,48.3,39.3,59.4,23.1,65.7C6.9,72,-10.9,73.4,-26.3,67.5C-41.7,61.6,-54.7,48.4,-62.1,32.4C-69.5,16.4,-71.3,-2.4,-67.3,-19.9C-63.3,-37.4,-53.5,-53.6,-39.4,-62.6C-25.3,-71.6,-6.9,-73.4,9.8,-70.8C26.5,-68.2,32.3,-67.9,45.2,-58.5Z" transform="translate(100 100)" />
            <circle cx="100" cy="100" r="30" fill="#2ecc71" opacity="0.7"/>
            <text x="100" y="105" text-anchor="middle" fill="white" font-size="20" font-weight="bold">?</text>
        </svg>
        
        <a href="/" class="home-button">返回首页</a>
        
        <div class="links">
            <a href="/">首页</a> | 
            <a href="/">关于我们</a> | 
            <a href="/">联系我们</a> | 
            <a href="/">网站地图</a>
        </div>
    </div>
</body>
</html>