perf(linktree):use local background

app/page.tsx

@@ -53,8 +53,8 @@ export default async function Home() {
         dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }}
       />
       <video className="fixed top-0 left-0 w-full h-full -z-10 object-cover" autoPlay muted loop playsInline preload="none">
-        <source src="https://cdn.gunshiz.top/erika.mp4" media="(min-width: 768px)"></source>
-        <source src="https://cdn.gunshiz.top/erika-mb.mp4" media="(max-width: 767px)"></source>
+        <source src="/erika.mp4" media="(min-width: 768px)"></source>
+        <source src="/erika-mb.mp4" media="(max-width: 767px)"></source>
       </video>
       <Card className="w-full max-w-sm overflow-hidden relative bg-transparent border-0 backdrop-blur-md md:backdrop-blur-none md:bg-card md:border md:max-w-lg" role="article">
         <CardHeader className="flex flex-col items-center gap-4 text-center">