fix(layout): adjust main content overflow and font stack configuration

- Change main content container overflow from 'auto' to 'hidden' in MainLayout.vue
- Update font stack in theme.css to include additional Chinese fonts and reorder priority
- Remove max-width constraint from profile container in Profile.vue for better responsiveness

frontend/app/web-gold/src/layouts/MainLayout.vue

@@ -12,7 +12,7 @@ import SidebarNav from '@/components/SidebarNav.vue'
     <TopNav />
     <div class="flex flex-1 pt-[70px]">
       <SidebarNav />
-      <main class="flex-1 h-[calc(100vh-70px)] overflow-auto">
+      <main class="flex-1 h-[calc(100vh-70px)] overflow-hidden">
         <RouterView v-slot="{ Component }">
           <keep-alive>
             <component :is="Component" />