Initial homepage

site/404.html

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+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="utf-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1">
+    <meta name="color-scheme" content="dark">
+    <meta name="theme-color" content="#77747f">
+    <title>未找到页面 | 中枢</title>
+    <link rel="icon" href="/assets/images/avatar.jpg" type="image/jpeg">
+    <link rel="stylesheet" href="/assets/css/main.css?v=20260818-3">
+    <script src="/assets/js/main.js?v=20260818-3" defer></script>
+  </head>
+  <body>
+    <canvas id="sakura" aria-hidden="true"></canvas>
+    <main class="landing">
+      <section class="composition" aria-labelledby="error-title">
+        <div class="portrait-stage">
+          <div class="portrait-ring">
+            <img class="portrait-image" src="/assets/images/avatar.jpg" alt="中枢头像">
+            <div class="portrait-frame" aria-hidden="true">
+              <picture class="portrait-frame-slice">
+                <source media="(prefers-reduced-motion: reduce)" srcset="/assets/images/avatar-frame-static.png">
+                <img src="/assets/images/avatar-frame-animated.png" alt="">
+              </picture>
+            </div>
+          </div>
+        </div>
+        <div class="intro">
+          <p class="eyebrow">Error 404</p>
+          <h1 id="error-title" aria-label="迷路了"><span>迷</span><span>路</span><span>了</span></h1>
+          <p class="tagline">这里没有光，但可以回到入口。</p>
+        </div>
+        <nav class="destinations destinations-single" aria-label="返回导航">
+          <a class="destination" href="/">
+            <span>返回首页</span>
+          </a>
+        </nav>
+      </section>
+    </main>
+  </body>
+</html>