<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>404错误 - 页面不存在</title>
    <meta name="description" content="您访问的页面不存在，请检查URL或返回首页">
    <meta name="robots" content="noindex, nofollow">
    <style>
        :root {
            --primary-color: #3498db;
            --secondary-color: #2980b9;
            --accent-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --text-light: #fff;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .error-container {
            max-width: 800px;
            width: 100%;
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            padding: 40px;
            animation: fadeIn 0.6s ease-out;
        }
        
        .error-code {
            font-size: 12rem;
            font-weight: 700;
            color: #2c3e50;
            line-height: 1;
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }
        
        .error-code::after {
            content: '';
            position: absolute;
            bottom: -20px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: #2c3e50;
            border-radius: 2px;
        }
        
        .error-title {
            font-size: 2.2rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        
        .error-message {
            font-size: 1.1rem;
            margin-bottom: 30px;
            color: #666;
            max-width: 600px;
        }
        
        .btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            margin-top: 30px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 25px;
            background: #5b250b;
            color: var(--text-light);
            text-decoration: none;
            border-radius: 30px;
            font-weight: 500;
            transition: all 0.3s ease;
            border: 2px solid transparent;
            cursor: pointer;
        }
        
        .btn:hover {
            background: #5b250b;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .btn-outline {
            background: transparent;
            border-color: #5b250b;
            color: #5b250b;
        }
        
        .btn-outline:hover {
            background: #5b250b;
            color: white;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        @media (max-width: 768px) {
            .error-container {
                padding: 30px 20px;
            }
            
            .error-code {
                font-size: 8rem;
            }
            
            .error-title {
                font-size: 1.8rem;
            }
            
            .illustration {
                width: 200px;
                height: 200px;
            }
        }
        
        @media (max-width: 480px) {
            .error-code {
                font-size: 6rem;
            }
            
            .error-title {
                font-size: 1.5rem;
            }
            
            .btn-group {
                flex-direction: column;
                width: 100%;
            }
            
            .btn {
                width: 100%;
            }
        }
    </style>
</head>
<body>
    <div class="error-container">
        <div class="error-code">404</div>
        <h1 class="error-title">哎呀！页面找不到啦</h1>
        <p class="error-message">
            您访问的页面不存在或已被移除。请检查URL是否正确，或点击下方按钮返回首页。
        </p>
        <div class="btn-group">
            <a href="#" class="btn" onclick="history.go(-1);return false;">返回上一页</a>
            <a href="/" class="btn">返回首页</a>
            <a href="/index.php?m=content&c=index&a=lists&catid=1" class="btn btn-outline" rel="external nofollow">走进帝睿</a>
            <a href="/index.php?m=content&c=index&a=lists&catid=18" class="btn btn-outline" rel="external nofollow">联系我们</a>
        </div>
    </div>
</body>
</html>