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502.html
1<!DOCTYPE html>
2<html lang="en">
3<head>
4 <meta charset="UTF-8">
5 <meta name="viewport" content="width=device-width, initial-scale=1.0">
6 <title>502 - Bad Gateway</title>
7 <style>
8 * { margin: 0; padding: 0; box-sizing: border-box; }
9 body {
10 font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
11 display: flex;
12 justify-content: center;
13 align-items: center;
14 min-height: 100vh;
15 background-color: #f5f5f5;
16 color: #333;
17 }
18 .container {
19 text-align: center;
20 padding: 2rem;
21 }
22 .error-code {
23 font-size: 6rem;
24 font-weight: 700;
25 color: #e67e22;
26 line-height: 1;
27 }
28 .error-title {
29 font-size: 1.5rem;
30 margin: 1rem 0;
31 color: #555;
32 }
33 .error-desc {
34 font-size: 1rem;
35 color: #777;
36 margin-bottom: 2rem;
37 }
38 .btn {
39 display: inline-block;
40 padding: 0.75rem 1.5rem;
41 background-color: #3498db;
42 color: white;
43 text-decoration: none;
44 border-radius: 5px;
45 font-size: 1rem;
46 transition: background-color 0.2s;
47 }
48 .btn:hover { background-color: #2980b9; }
49 </style>
50</head>
51<body>
52 <div class="container">
53 <div class="error-code">502</div>
54 <h1 class="error-title">Bad Gateway</h1>
55 <p class="error-desc">
56 The server received an invalid response from an upstream server.
57 Please try again in a moment.
58 </p>
59 <a href="/" class="btn">Go Home</a>
60 </div>
61</body>
62</html>