404.html

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<head>
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  <title>页面未找到 · Codex 使用指南</title>
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<body>
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  <main id="main-content" class="toolbook-main" style="max-width: 48rem; margin: 4rem auto; padding: 0 1.5rem;">
    <p class="hero-kicker">404</p>
    <h1>页面未找到</h1>
    <p class="lead">你访问的链接可能已移动，或地址输入有误。可以从首页重新选择路径。</p>
    <p><a class="button primary" href="index.html">返回首页</a> <a class="button" href="resources.html">资料地图</a></p>
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