diff --git a/index.html b/index.html
index 3ff0dc2..3a5857b 100644
--- a/index.html
+++ b/index.html
@@ -4,9 +4,9 @@
 <meta charset="UTF-8" />
 <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 <title>宇森 · Yusen｜活的文明系统模拟</title>
-<link rel="preconnect" href="https://fonts.googleapis.com" />
-<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
-<link href="https://fonts.googleapis.com/css2?family=Press+Start+2P&family=ZCOOL+QingKe+HuangYou&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet" />
+<link rel="preconnect" href="https://fonts.googleapis.com" crossorigin />
+<link href="https://fonts.googleapis.com/css2?family=Press+Start+2P&family=ZCOOL+QingKe+HuangYou&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet" media="print" onload="this.media='all'" />
+<noscript><link href="https://fonts.googleapis.com/css2?family=Press+Start+2P&family=ZCOOL+QingKe+HuangYou&family=Noto+Sans+SC:wght@300;400;500;700&display=swap" rel="stylesheet" /></noscript>
 <link rel="icon" type="image/png" sizes="48x48" href="assets/ui/logo_planet_48.png?v=20260723">
 <link rel="icon" type="image/png" sizes="256x256" href="assets/ui/logo_planet_256.png?v=20260723">
 <link rel="apple-touch-icon" href="assets/ui/logo_planet_256.png?v=20260723">
@@ -201,7 +201,7 @@
     <!-- ===== 介绍（视频主页） ===== -->
     <section class="panel active" id="intro">
       <div class="hero">
-        <video autoplay muted loop playsinline>
+        <video autoplay muted loop playsinline preload="metadata" poster="assets/bg/bg_sky.jpg">
           <source src="assets/yusen-trailer.mp4" type="video/mp4" />
         </video>
         <div class="veil"></div>
@@ -331,7 +331,6 @@
   </main>
 </div>
 
-<script src="codex-data.js"></script>
 <script>
   // top nav
   const navBtns=document.querySelectorAll('.nav button');