Chin 2

frontend/app/app.vue

@@ -1,7 +1,7 @@
 
 
 <template>
-  <div>
+  <div class="app-root" :class="{ 'zh': locale === 'zh' }" :data-lang="locale">
     <NuxtRouteAnnouncer />
     <div class="container">
       <NuxtPage />
@@ -16,7 +16,7 @@ const { locale } = useI18n()
 useHead({
   htmlAttrs: {
     lang: computed(() => {
-      const map: Record<string, string> = { en: 'en-US', es: 'es-ES', ca: 'ca-ES' }
+      const map: Record<string, string> = { en: 'en-US', es: 'es-ES', ca: 'ca-ES', zh: 'zh-CN' }
       return map[locale.value] || 'en-US'
     })
   },