<!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 Error</title>
    <style>
        /* 全局样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        /* 页面主体样式 */
        body {
            background-color: #f8f9fa;
            color: #333;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        /* 404 数字样式 */
        .error-code {
            font-size: 12rem;
            font-weight: 700;
            color: #3498db;
            margin-bottom: 20px;
            position: relative;
            animation: float 3s ease-in-out infinite;
        }

        /* 浮动动画 */
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-20px); }
        }

        /* 错误信息样式 */
        .error-message {
            font-size: 1.8rem;
            margin-bottom: 30px;
            text-align: center;
            max-width: 600px;
            line-height: 1.6;
        }

        /* 按钮样式 */
        .action-buttons {
            display: flex;
            gap: 20px;
            margin-top: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .btn {
            padding: 12px 30px;
            border-radius: 50px;
            text-decoration: none;
            font-size: 1.1rem;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
            border: none;
        }

        .btn-primary {
            background-color: #3498db;
            color: white;
        }

        .btn-primary:hover {
            background-color: #2980b9;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
        }

        .btn-secondary {
            background-color: white;
            color: #3498db;
            border: 2px solid #3498db;
        }

        .btn-secondary:hover {
            background-color: #f0f8ff;
            transform: translateY(-3px);
        }

        /* 页脚样式 */
        footer {
            position: absolute;
            bottom: 20px;
            font-size: 0.9rem;
            color: #777;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .error-code {
                font-size: 8rem;
            }
            
            .error-message {
                font-size: 1.4rem;
            }
            
            .btn {
                padding: 10px 25px;
                font-size: 1rem;
            }
        }

        @media (max-width: 480px) {
            .error-code {
                font-size: 6rem;
            }
            
            .action-buttons {
                flex-direction: column;
                width: 80%;
            }
        }
    </style>
</head>
<body>
    <!-- 404 错误代码 -->
    <div class="error-code">404</div>
    
    <!-- 错误提示信息 -->
    <div class="error-message">
        哎呀！你访问的页面好像迷路了 ??<br>
        可能是网址输入错误，或者页面已被移除。
    </div>
    
    <!-- 操作按钮 -->
    <div class="action-buttons">
        <a href="https://www.dlust.edu.cn/" class="btn btn-primary">返回首页</a>
        <button class="btn btn-secondary" onclick="history.back()">返回上一页</button>
    </div>
    
    <!-- 页脚 -->
    <footer>
        ? 2026 大连科技学院 - 所有权利保留
    </footer>
</body>
</html>
