<!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>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }

        .error-container {
            text-align: center;
            background: white;
            border-radius: 20px;
            padding: 60px 40px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            max-width: 600px;
            width: 100%;
            animation: fadeIn 0.6s ease-in;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }

            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .error-code {
            font-size: 120px;
            font-weight: bold;
            color: #667eea;
            margin-bottom: 20px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }

        .error-title {
            font-size: 28px;
            color: #333;
            margin-bottom: 15px;
        }

        .error-message {
            font-size: 16px;
            color: #666;
            margin-bottom: 30px;
            line-height: 1.6;
        }

        .error-details {
            background: #f8f9fa;
            border-radius: 10px;
            padding: 15px;
            margin-bottom: 30px;
            font-family: monospace;
            font-size: 14px;
            color: #555;
            text-align: left;
            word-break: break-all;
        }

        .home-button, .back-button {
            display: inline-block;
            padding: 12px 30px;
            margin: 0 10px;
            font-size: 16px;
            color: white;
            background: #667eea;
            border: none;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            cursor: pointer;
        }

            .home-button:hover {
                background: #5a67d8;
                transform: translateY(-2px);
                box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
            }

        .back-button {
            background: #48bb78;
        }

            .back-button:hover {
                background: #38a169;
                transform: translateY(-2px);
                box-shadow: 0 5px 15px rgba(72, 187, 120, 0.4);
            }

        .search-box {
            margin-top: 30px;
            padding-top: 30px;
            border-top: 1px solid #e0e0e0;
        }

        .search-input {
            width: 70%;
            padding: 10px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 50px;
            font-size: 14px;
            transition: all 0.3s ease;
        }

            .search-input:focus {
                outline: none;
                border-color: #667eea;
            }

        .search-button {
            padding: 10px 20px;
            background: #667eea;
            color: white;
            border: none;
            border-radius: 50px;
            margin-left: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

            .search-button:hover {
                background: #5a67d8;
            }

        @media (max-width: 768px) {
            .error-container {
                padding: 40px 20px;
            }

            .error-code {
                font-size: 80px;
            }

            .error-title {
                font-size: 24px;
            }

            .home-button, .back-button {
                display: block;
                margin: 10px 0;
            }

            .search-input {
                width: 60%;
            }
        }
    </style>
</head>
<body>
    <div class="error-container">
        <div class="error-code">404</div>
        <div class="error-title">😕 页面未找到</div>
        <div class="error-message">
            抱歉，您访问的页面不存在或已被移动。<br>
            请检查网址是否正确，或返回首页继续浏览。
        </div>

        <a href="/" class="home-button">🏠 返回首页</a>

    </div>
</body>
</html>