initial import: random background api
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shumengya
390
index.html
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390
index.html
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<!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>随机背景 API</title>
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<meta name="description" content="Cloudflare Pages 随机背景 API 文档与在线预览。">
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<style>
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:root {
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--bg: #f6f7fb;
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--panel: #fff;
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--text: #172033;
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--muted: #5b657a;
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--line: #e3e7ef;
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--soft: #f3f5f9;
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--accent: #2563eb;
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--code: #0b1220;
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--shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
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}
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* { box-sizing: border-box; }
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body {
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margin: 0;
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min-height: 100vh;
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background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
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color: var(--text);
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font: 14px/1.55 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
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}
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a { color: var(--accent); text-decoration: none; }
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a:hover { text-decoration: underline; }
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.wrap {
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max-width: 1200px;
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margin: 0 auto;
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padding: 14px;
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}
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.top {
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display: grid;
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gap: 10px;
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grid-template-columns: minmax(0, 1fr) 250px;
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align-items: start;
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}
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.main {
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display: grid;
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gap: 10px;
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grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
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margin-top: 10px;
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}
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.card {
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background: var(--panel);
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border: 1px solid var(--line);
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border-radius: 14px;
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box-shadow: var(--shadow);
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overflow: hidden;
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}
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.pad { padding: 12px; }
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h1, h2, p { margin: 0; }
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h1 {
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font-size: clamp(24px, 3vw, 34px);
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line-height: 1.1;
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letter-spacing: -0.03em;
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}
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h2 {
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font-size: 15px;
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margin-bottom: 6px;
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}
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.lead {
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margin-top: 6px;
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color: var(--muted);
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}
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.meta {
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display: flex;
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flex-wrap: wrap;
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gap: 6px;
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margin-top: 10px;
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}
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.tag {
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display: inline-flex;
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align-items: center;
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gap: 6px;
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padding: 5px 9px;
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border-radius: 999px;
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border: 1px solid var(--line);
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background: var(--soft);
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font-size: 11px;
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color: var(--text);
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}
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.links {
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display: grid;
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gap: 6px;
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font-size: 13px;
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}
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.section {
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display: grid;
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gap: 8px;
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}
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.grid-2 {
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display: grid;
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gap: 8px;
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grid-template-columns: repeat(2, minmax(0, 1fr));
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}
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.endpoint {
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padding: 10px;
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border-radius: 12px;
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border: 1px solid var(--line);
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background: #fff;
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}
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.endpoint strong {
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display: block;
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margin-bottom: 4px;
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font-size: 12px;
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}
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.code {
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margin: 0;
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padding: 9px 10px;
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border-radius: 10px;
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border: 1px solid var(--line);
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background: var(--code);
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color: #e7eefc;
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overflow-x: auto;
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font: 11px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
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}
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label {
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display: block;
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margin-bottom: 4px;
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font-size: 11px;
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color: var(--muted);
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}
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select, button, input {
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width: 100%;
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padding: 9px 10px;
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border-radius: 10px;
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border: 1px solid var(--line);
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background: #fff;
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color: var(--text);
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font: inherit;
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}
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button {
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cursor: pointer;
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border-color: var(--accent);
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background: var(--accent);
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color: #fff;
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}
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.row {
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display: grid;
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gap: 8px;
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grid-template-columns: repeat(3, minmax(0, 1fr)) 100px;
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}
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.preview-grid {
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display: grid;
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gap: 8px;
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grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
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align-items: start;
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}
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.preview-box {
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aspect-ratio: 16 / 10;
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border-radius: 12px;
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overflow: hidden;
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border: 1px solid var(--line);
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background: #eef2f7;
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}
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.preview-box img {
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width: 100%;
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height: 100%;
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object-fit: cover;
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display: block;
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}
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.small {
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color: var(--muted);
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font-size: 11px;
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}
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.footer {
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margin-top: 10px;
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color: var(--muted);
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font-size: 11px;
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}
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@media (max-width: 900px) {
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.top, .main, .grid-2, .preview-grid, .row {
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grid-template-columns: 1fr;
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}
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}
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</style>
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</head>
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<body>
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<main class="wrap">
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<section class="top">
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<div class="card pad">
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<h1>随机背景 API</h1>
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<p class="lead">Cloudflare Pages 随机背景接口。上传图片后先用 `build.py` 生成序号 `.webp`，然后可通过 `/api/random` 和 `/api/list` 调用。</p>
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<div class="meta">
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<span class="tag">竖屏：mobile-image</span>
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<span class="tag">横屏：desketop-image</span>
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<span class="tag">返回：302 / JSON</span>
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<span class="tag">组件：widget.js</span>
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</div>
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</div>
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<div class="card pad">
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<h2>快速链接</h2>
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<div class="links">
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<a href="/api/list" target="_blank" rel="noreferrer">/api/list</a>
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<a href="/manifest.json" target="_blank" rel="noreferrer">manifest.json</a>
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<a href="/mobile-image/1.webp" target="_blank" rel="noreferrer">mobile-image/1.webp</a>
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</div>
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</div>
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</section>
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<section class="main">
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<div class="card pad section" id="api">
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<h2>API 调用</h2>
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<div class="grid-2">
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<div class="endpoint">
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<strong>随机图片</strong>
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<div class="small">默认 302 跳转到随机图片。</div>
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<pre class="code">GET /api/random</pre>
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</div>
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<div class="endpoint">
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<strong>返回 JSON</strong>
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<div class="small">适合前端自己处理图片地址。</div>
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<pre class="code">GET /api/random?format=json</pre>
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</div>
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</div>
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<div class="grid-2">
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<div class="endpoint">
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<strong>强制竖屏</strong>
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<pre class="code">GET /api/random?mode=mobile</pre>
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</div>
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<div class="endpoint">
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<strong>强制横屏</strong>
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<pre class="code">GET /api/random?mode=desktop</pre>
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</div>
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</div>
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<p class="small">支持参数：`mode=auto|mobile|desktop`、`orientation=portrait|landscape`、`device=mobile|desktop`、`format=redirect|json`。</p>
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</div>
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<div class="card pad section" id="preview">
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<h2>在线预览</h2>
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<div class="row">
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<div>
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<label for="modeSelect">mode</label>
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<select id="modeSelect">
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<option value="auto">auto</option>
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<option value="mobile">mobile</option>
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<option value="desktop">desktop</option>
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</select>
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</div>
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<div>
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<label for="orientationSelect">orientation</label>
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<select id="orientationSelect">
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<option value="">auto</option>
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<option value="portrait">portrait</option>
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<option value="landscape">landscape</option>
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</select>
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</div>
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<div>
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<label for="formatSelect">format</label>
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<select id="formatSelect">
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<option value="json">json</option>
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<option value="redirect">redirect</option>
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</select>
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</div>
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<button id="refreshBtn" type="button">刷新</button>
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</div>
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<div class="preview-grid">
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<div>
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<label for="apiUrl">当前地址</label>
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<input id="apiUrl" readonly value="">
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<div class="preview-box" style="margin-top:8px">
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<img id="previewImg" alt="随机背景预览" src="">
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</div>
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</div>
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<div>
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<label>返回结果</label>
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<pre class="code" id="jsonOutput">{}</pre>
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</div>
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</div>
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</div>
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</section>
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<section class="card pad section" style="margin-top:10px">
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<h2>嵌入组件</h2>
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<div class="grid-2">
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<div class="endpoint">
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<strong>直接引用</strong>
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<pre class="code"><script src="https://random-background-api.pages.dev/widget.js"></script>
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<random-background-widget
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src="https://random-background-api.pages.dev"
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blur="12"
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radius="16px"
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height="260px">
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</random-background-widget></pre>
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</div>
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<div class="endpoint">
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<strong>说明</strong>
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<div class="small">组件只读静态 `manifest.json` 和图片，不消耗 Functions 额度；`blur` 控制高斯模糊像素值。</div>
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</div>
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</div>
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</section>
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<div class="footer">
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构建命令：<code>python3 build.py</code>。这里保留 Pages Functions，所以可以直接提供 HTTP 随机 API。
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</div>
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</main>
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<script>
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const modeSelect = document.getElementById('modeSelect');
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const orientationSelect = document.getElementById('orientationSelect');
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const formatSelect = document.getElementById('formatSelect');
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const refreshBtn = document.getElementById('refreshBtn');
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const apiUrl = document.getElementById('apiUrl');
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const previewImg = document.getElementById('previewImg');
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const jsonOutput = document.getElementById('jsonOutput');
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function detectOrientation() {
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return window.matchMedia('(orientation: portrait)').matches ? 'portrait' : 'landscape';
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}
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function detectDevice() {
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if (navigator.userAgentData && typeof navigator.userAgentData.mobile === 'boolean') {
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return navigator.userAgentData.mobile ? 'mobile' : 'desktop';
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}
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return /Mobi|Android|iPhone|iPad|iPod/i.test(navigator.userAgent) ? 'mobile' : 'desktop';
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}
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function buildApiPath() {
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const params = new URLSearchParams();
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params.set('mode', modeSelect.value);
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params.set('device', detectDevice());
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params.set('format', formatSelect.value);
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const orientation = orientationSelect.value || detectOrientation();
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params.set('orientation', orientation);
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return `/api/random?${params.toString()}`;
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}
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async function refresh() {
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const url = buildApiPath();
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apiUrl.value = url;
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previewImg.style.opacity = '0.72';
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if (formatSelect.value === 'json') {
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const response = await fetch(url);
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const data = await response.json();
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jsonOutput.textContent = JSON.stringify(data, null, 2);
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previewImg.src = data.url || '';
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} else {
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jsonOutput.textContent = '{ "format": "redirect" }';
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previewImg.src = url;
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}
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}
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previewImg.addEventListener('load', () => {
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previewImg.style.opacity = '1';
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});
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refreshBtn.addEventListener('click', refresh);
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modeSelect.addEventListener('change', refresh);
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orientationSelect.addEventListener('change', refresh);
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formatSelect.addEventListener('change', refresh);
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refresh();
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</script>
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</body>
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</html>
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