<!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>
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #e9edf2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            margin: 0;
            padding: 20px;
        }

        .error-container {
            text-align: center;
            max-width: 600px;
            background: white;
            padding: 50px 40px 60px;
            border-radius: 24px;
            box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.1);
            transition: transform 0.2s ease;
        }

        .error-code {
            font-size: 120px;
            font-weight: 800;
            color: #2c3e66;
            line-height: 1;
            margin-bottom: 10px;
            letter-spacing: 4px;
            text-shadow: 4px 4px 0 rgba(44, 62, 102, 0.1);
        }

        .error-message {
            font-size: 28px;
            font-weight: 600;
            color: #1e2a3a;
            margin-bottom: 15px;
        }

        .error-description {
            font-size: 16px;
            color: #5a6e7c;
            margin-bottom: 30px;
            line-height: 1.5;
        }

        .home-link {
            display: inline-block;
            background: #2c3e66;
            color: white;
            text-decoration: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 500;
            font-size: 16px;
            transition: background 0.25s, transform 0.1s;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
        }

        .home-link:hover {
            background: #1f2c48;
            transform: translateY(-2px);
            box-shadow: 0 8px 18px rgba(0, 0, 0, 0.1);
        }

        .home-link:active {
            transform: translateY(1px);
        }

        .help-text {
            margin-top: 30px;
            font-size: 13px;
            color: #8a9aa8;
            border-top: 1px solid #e2e8f0;
            padding-top: 25px;
        }

        @media (max-width: 500px) {
            .error-container {
                padding: 40px 25px 50px;
            }
            .error-code {
                font-size: 90px;
            }
            .error-message {
                font-size: 22px;
            }
        }
    </style>
</head>
<body>
    <div class="error-container">
        <div class="error-code">404</div>
        <div class="error-message">哎呀！页面走丢了</div>
        <div class="error-description">
            您访问的页面可能已被删除、名称已更改，或者暂时不可用。
        </div>
        <a href="/" class="home-link">← 返回网站首页</a>
        <div class="help-text">
            如果您确认网址正确，请联系管理员。<br>
            或使用导航栏寻找您需要的内容。
        </div>
    </div>
</body>
</html>