diff --git a/frontend_nuxt/components/HeaderComponent.vue b/frontend_nuxt/components/HeaderComponent.vue
index 7abf4ff66..3127929a6 100644
--- a/frontend_nuxt/components/HeaderComponent.vue
+++ b/frontend_nuxt/components/HeaderComponent.vue
@@ -76,7 +76,9 @@ export default {
     const router = useRouter()
 
     const goToHome = () => {
-      router.push('/')
+      router.push('/').then(() => {
+        window.location.reload()
+      })
     }
     const search = () => {
       showSearch.value = true
diff --git a/frontend_nuxt/components/MenuComponent.vue b/frontend_nuxt/components/MenuComponent.vue
index cda57df0e..3f78ecfa4 100644
--- a/frontend_nuxt/components/MenuComponent.vue
+++ b/frontend_nuxt/components/MenuComponent.vue
@@ -71,7 +71,7 @@
           <div v-if="isLoadingCategory" class="menu-loading-container">
             <l-hatch size="28" stroke="4" speed="3.5" color="var(--primary-color)"></l-hatch>
           </div>
-          <div v-else v-for="c in categories" :key="c.id" class="section-item" @click="gotoCategory(c)">
+          <div v-else v-for="c in categoryData" :key="c.id" class="section-item" @click="gotoCategory(c)">
             <template v-if="c.smallIcon || c.icon">
               <img v-if="isImageIcon(c.smallIcon || c.icon)" :src="c.smallIcon || c.icon" class="section-item-icon" :alt="c.name" />
               <i v-else :class="['section-item-icon', c.smallIcon || c.icon]"></i>
@@ -93,7 +93,7 @@
           <div v-if="isLoadingTag" class="menu-loading-container">
             <l-hatch size="28" stroke="4" speed="3.5" color="var(--primary-color)"></l-hatch>
           </div>
-          <div v-else v-for="t in tags" :key="t.id" class="section-item" @click="gotoTag(t)">
+          <div v-else v-for="t in tagData" :key="t.id" class="section-item" @click="gotoTag(t)">
             <img v-if="isImageIcon(t.smallIcon || t.icon)" :src="t.smallIcon || t.icon" class="section-item-icon" :alt="t.name" />
             <i v-else class="section-item-icon fas fa-hashtag"></i>
             <span class="section-item-text">{{ t.name }} <span class="section-item-text-count">x {{ t.count
@@ -115,7 +115,7 @@
 import { themeState, cycleTheme, ThemeMode } from '~/utils/theme'
 import { authState } from '~/utils/auth'
 import { fetchUnreadCount, notificationState } from '~/utils/notification'
-import { watch } from 'vue'
+import { ref, computed, watch, onMounted } from 'vue'
 import { API_BASE_URL } from '~/main'
 
 export default {
@@ -126,18 +126,39 @@ export default {
       default: true
     }
   },
-  data() {
-    return {
-      categories: [],
-      tags: [],
-      categoryOpen: true,
-      tagOpen: true,
-      isLoadingCategory: false,
-      isLoadingTag: false
+  async setup(props, { emit }) {
+    const router = useRouter()
+    const categories = ref([])
+    const tags = ref([])
+    const categoryOpen = ref(true)
+    const tagOpen = ref(true)
+    const isLoadingCategory = ref(false)
+    const isLoadingTag = ref(false)
+    const categoryData = ref([])
+    const tagData = ref([])
+
+    const fetchCategoryData = async () => {
+      isLoadingCategory.value = true
+      const res = await fetch(`${API_BASE_URL}/api/categories`)
+      const data = await res.json()
+      categoryData.value = data
+      isLoadingCategory.value = false
     }
-  },
-  computed: {
-    iconClass() {
+
+    const fetchTagData = async () => {
+      isLoadingTag.value = true
+      const res = await fetch(`${API_BASE_URL}/api/tags?limit=10`)
+      const data = await res.json()
+      tagData.value = data
+      isLoadingTag.value = false
+    }
+
+    onMounted(() => {
+      // fetchCategoryData()
+      // fetchTagData()
+    })
+
+    const iconClass = computed(() => {
       switch (themeState.mode) {
         case ThemeMode.DARK:
           return 'fas fa-moon'
@@ -146,18 +167,14 @@ export default {
         default:
           return 'fas fa-desktop'
       }
-    },
-    unreadCount() {
-      return notificationState.unreadCount
-    },
-    showUnreadCount() {
-      return this.unreadCount > 99 ? '99+' : this.unreadCount
-    },
-    shouldShowStats() {
-      return authState.role === 'ADMIN'
-    }
-  },
-  async mounted() {
+    })
+
+    const unreadCount = computed(() => notificationState.unreadCount)
+    const showUnreadCount = computed(() =>
+      unreadCount.value > 99 ? '99+' : unreadCount.value
+    )
+    const shouldShowStats = computed(() => authState.role === 'ADMIN')
+
     const updateCount = async () => {
       if (authState.loggedIn) {
         await fetchUnreadCount()
@@ -165,94 +182,64 @@ export default {
         notificationState.unreadCount = 0
       }
     }
-    
-    watch(() => authState.loggedIn, async () => {
+
+    onMounted(async () => {
       await updateCount()
+      watch(() => authState.loggedIn, updateCount)
     })
 
-    const CAT_CACHE_KEY = 'menu-categories'
-    const TAG_CACHE_KEY = 'menu-tags'
-
-    const cachedCategories = localStorage.getItem(CAT_CACHE_KEY)
-    if (cachedCategories) {
-      try {
-        this.categories = JSON.parse(cachedCategories)
-      } catch { /* ignore */ }
-    }
-
-    const cachedTags = localStorage.getItem(TAG_CACHE_KEY)
-    if (cachedTags) {
-      try {
-        this.tags = JSON.parse(cachedTags)
-      } catch { /* ignore */ }
-    }
-
-    this.isLoadingCategory = !cachedCategories
-    this.isLoadingTag = !cachedTags
-
-    const fetchCategories = () => {
-      fetch(`${API_BASE_URL}/api/categories`).then(res => {
-        if (res.ok) {
-          res.json().then(data => {
-            this.categories = data.slice(0, 10)
-            localStorage.setItem(CAT_CACHE_KEY, JSON.stringify(this.categories))
-          })
-        }
-        this.isLoadingCategory = false
-      })
-    }
-
-    const fetchTags = () => {
-      fetch(`${API_BASE_URL}/api/tags?limit=10`).then(res => {
-        if (res.ok) {
-          res.json().then(data => {
-            this.tags = data
-            localStorage.setItem(TAG_CACHE_KEY, JSON.stringify(this.tags))
-          })
-        }
-        this.isLoadingTag = false
-      })
-    }
-
-    if (cachedCategories) {
-      setTimeout(fetchCategories, 1500)
-    } else {
-      fetchCategories()
-    }
-
-    if (cachedTags) {
-      setTimeout(fetchTags, 1500)
-    } else {
-      fetchTags()
-    }
-
-    await updateCount()
-  },
-  methods: {
-    cycleTheme,
-    handleHomeClick() {
-      this.$router.push('/').then(() => {
+    const handleHomeClick = () => {
+      router.push('/').then(() => {
         window.location.reload()
       })
-    },
-    handleItemClick() {
-      if (window.innerWidth <= 768) this.$emit('item-click')
-    },
-    isImageIcon(icon) {
+    }
+
+    const handleItemClick = () => {
+      if (window.innerWidth <= 768) emit('item-click')
+    }
+
+    const isImageIcon = (icon) => {
       if (!icon) return false
       return /^https?:\/\//.test(icon) || icon.startsWith('/')
-    },
-    gotoCategory(c) {
+    }
+
+    const gotoCategory = (c) => {
       const value = encodeURIComponent(c.id ?? c.name)
-      this.$router
-        .push({ path: '/', query: { category: value } })
-      this.handleItemClick()
-    },
-    gotoTag(t) {
+      router
+        .push({ path: '/', query: { category: value } }).then(() => {
+          window.location.reload()
+        })
+      handleItemClick()
+    }
+
+    const gotoTag = (t) => {
       const value = encodeURIComponent(t.id ?? t.name)
-      this.$router
-        .push({ path: '/', query: { tags: value } })
-      this.handleItemClick()
+      router
+        .push({ path: '/', query: { tags: value } }).then(() => {
+          window.location.reload()
+        })
+      handleItemClick()
+    }
+
+    await Promise.all([fetchCategoryData(), fetchTagData()])
+
+    return {
+      categoryData,
+      tagData,
+      categoryOpen,
+      tagOpen,
+      isLoadingCategory,
+      isLoadingTag,
+      iconClass,
+      unreadCount,
+      showUnreadCount,
+      shouldShowStats,
+      cycleTheme,
+      handleHomeClick,
+      handleItemClick,
+      isImageIcon,
+      gotoCategory,
+      gotoTag
     }
   }
 }
diff --git a/frontend_nuxt/main.js b/frontend_nuxt/main.js
index f3db25ee4..339f406bc 100644
--- a/frontend_nuxt/main.js
+++ b/frontend_nuxt/main.js
@@ -1,5 +1,5 @@
-export const API_BASE_URL = 'https://www.open-isle.com'
-// export const API_BASE_URL = 'http://127.0.0.1:8081'
+// export const API_BASE_URL = 'https://www.open-isle.com'
+export const API_BASE_URL = 'http://127.0.0.1:8081'
 export const GOOGLE_CLIENT_ID = '777830451304-nt8afkkap18gui4f9entcha99unal744.apps.googleusercontent.com'
 export const GITHUB_CLIENT_ID = 'Ov23liVkO1NPAX5JyWxJ'
 export const DISCORD_CLIENT_ID = '1394985417044000779'
diff --git a/frontend_nuxt/pages/index.vue b/frontend_nuxt/pages/index.vue
index 334c3381f..750aa6552 100644
--- a/frontend_nuxt/pages/index.vue
+++ b/frontend_nuxt/pages/index.vue
@@ -107,7 +107,7 @@
 </template>
 
 <script>
-import { ref, onMounted, watch } from 'vue'
+import { ref, watch } from 'vue'
 import { useRoute } from 'vue-router'
 import { useScrollLoadMore } from '~/utils/loadMore'
 import { stripMarkdown } from '~/utils/markdown'
@@ -131,12 +131,8 @@ export default {
     SearchDropdown,
     ClientOnly: () => import('vue').then(m => m.defineAsyncComponent(() => import('vue').then(() => ({ template: '<slot />' }))))
   },
-  setup() {
+  async setup() {
     const route = useRoute()
-
-    /**
-     * -------- 1. PARAMS & REFS --------
-     */
     const selectedCategory = ref('')
     if (route.query.category) {
       const c = decodeURIComponent(route.query.category)
@@ -169,19 +165,6 @@ export default {
     const pageSize = 10
     const allLoaded = ref(false)
 
-    /**
-     * -------- 2. CLIENT‑SIDE ONLY: LDRS REGISTER --------
-     * 这里使用动态 import 避免 SSR 阶段触发 HTMLElement 未定义错误。
-     */
-    onMounted(async () => {
-      // 首次加载
-      fetchContent()
-      await loadOptions()
-    })
-
-    /**
-     * -------- 3. FETCH OPTION HELPERS --------
-     */
     const loadOptions = async () => {
       if (selectedCategory.value && !isNaN(selectedCategory.value)) {
         try {
@@ -245,9 +228,6 @@ export default {
       return url
     }
 
-    /**
-     * -------- 4. FETCH CORE --------
-     */
     const fetchPosts = async (reset = false) => {
       if (reset) {
         page.value = 0
@@ -299,7 +279,12 @@ export default {
       if (isLoadingPosts.value || allLoaded.value) return
       try {
         isLoadingPosts.value = true
-        const res = await fetch(buildRankUrl())
+        const token = getToken()
+        const res = await fetch(buildRankUrl(), {
+          headers: {
+            Authorization: token ? `Bearer ${token}` : ''
+          }
+        })
         isLoadingPosts.value = false
         if (!res.ok) return
         const data = await res.json()
@@ -336,7 +321,12 @@ export default {
       if (isLoadingPosts.value || allLoaded.value) return
       try {
         isLoadingPosts.value = true
-        const res = await fetch(buildReplyUrl())
+        const token = getToken()
+        const res = await fetch(buildReplyUrl(), {
+          headers: {
+            Authorization: token ? `Bearer ${token}` : ''
+          }
+        })
         isLoadingPosts.value = false
         if (!res.ok) return
         const data = await res.json()
@@ -366,11 +356,11 @@ export default {
 
     const fetchContent = async (reset = false) => {
       if (selectedTopic.value === '排行榜') {
-        fetchRanking(reset)
+        await fetchRanking(reset)
       } else if (selectedTopic.value === '最新回复') {
-        fetchLatestReply(reset)
+        await fetchLatestReply(reset)
       } else {
-        fetchPosts(reset)
+        await fetchPosts(reset)
       }
     }
 
@@ -386,6 +376,8 @@ export default {
 
     const sanitizeDescription = text => stripMarkdown(text)
 
+    await Promise.all([loadOptions(), fetchContent()])
+
     return {
       topics,
       selectedTopic,
diff --git a/frontend_nuxt/pages/posts/[id]/index.vue b/frontend_nuxt/pages/posts/[id]/index.vue
index bf0b979aa..93d2db5b7 100644
--- a/frontend_nuxt/pages/posts/[id]/index.vue
+++ b/frontend_nuxt/pages/posts/[id]/index.vue
@@ -126,7 +126,7 @@ import Dropdown from '../../../components/Dropdown.vue'
 export default {
   name: 'PostPageView',
   components: { CommentItem, CommentEditor, BaseTimeline, ArticleTags, ArticleCategory, ReactionsGroup, DropdownMenu, VueEasyLightbox, Dropdown },
-  setup() {
+  async setup() {
     const route = useRoute()
     const postId = route.params.id
     const router = useRouter()
@@ -150,27 +150,35 @@ export default {
     const commentSort = ref('NEWEST')
     const isFetchingComments = ref(false)
 
-    // record default metadata from the main document
-    const defaultTitle = document.title
-    const metaDescriptionEl = document.querySelector('meta[name="description"]')
-    const defaultDescription = metaDescriptionEl ? metaDescriptionEl.getAttribute('content') : ''
-    const headerHeight = parseFloat(getComputedStyle(document.documentElement).getPropertyValue('--header-height')) || 0
+    // record default metadata from the main document (client only)
+    const defaultTitle = process.client ? document.title : ''
+    const metaDescriptionEl = process.client
+      ? document.querySelector('meta[name="description"]')
+      : null
+    const defaultDescription = process.client && metaDescriptionEl
+      ? metaDescriptionEl.getAttribute('content')
+      : ''
+    const headerHeight = process.client
+      ? parseFloat(getComputedStyle(document.documentElement).getPropertyValue('--header-height')) || 0
+      : 0
 
-    watch(title, t => {
-      document.title = `OpenIsle - ${t}`
-    })
+    if (process.client) {
+      watch(title, t => {
+        document.title = `OpenIsle - ${t}`
+      })
 
-    watch(postContent, c => {
-      if (metaDescriptionEl) {
-        metaDescriptionEl.setAttribute('content', stripMarkdownLength(c, 400))
-      }
-    })
+      watch(postContent, c => {
+        if (metaDescriptionEl) {
+          metaDescriptionEl.setAttribute('content', stripMarkdownLength(c, 400))
+        }
+      })
 
-    onBeforeUnmount(() => {
-      document.title = defaultTitle
-      if (metaDescriptionEl) metaDescriptionEl.setAttribute('content', defaultDescription)
-      window.removeEventListener('scroll', updateCurrentIndex)
-    })
+      onBeforeUnmount(() => {
+        document.title = defaultTitle
+        if (metaDescriptionEl) metaDescriptionEl.setAttribute('content', defaultDescription)
+        window.removeEventListener('scroll', updateCurrentIndex)
+      })
+    }
       
     const lightboxVisible = ref(false)
     const lightboxIndex = ref(0)
@@ -294,7 +302,7 @@ export default {
         })
         isWaitingFetchingPost.value = false;
         if (!res.ok) {
-          if (res.status === 404) {
+          if (res.status === 404 && process.client) {
             router.replace('/404')
           }
           return
@@ -581,10 +589,11 @@ export default {
       router.push(`/users/${author.value.id}`)
     }
 
+    await fetchPost()
+
     onMounted(async () => {
       const hash = location.hash
       const id = hash.startsWith('#comment-') ? hash.substring('#comment-'.length) : null
-      await fetchPost()
       if (id) expandCommentPath(id)
       updateCurrentIndex()
       window.addEventListener('scroll', updateCurrentIndex)
diff --git a/frontend_nuxt/utils/markdown.js b/frontend_nuxt/utils/markdown.js
index dbcd352b7..71de58a16 100644
--- a/frontend_nuxt/utils/markdown.js
+++ b/frontend_nuxt/utils/markdown.js
@@ -86,9 +86,15 @@ export function handleMarkdownClick(e) {
 
 export function stripMarkdown(text) {
   const html = md.render(text || '')
-  const el = document.createElement('div')
-  el.innerHTML = html
-  return el.textContent || el.innerText || ''
+  // SSR 环境下没有 document
+  if (typeof window === 'undefined') {
+    // 用正则去除 HTML 标签
+    return html.replace(/<[^>]+>/g, '').replace(/\s+/g, ' ').trim()
+  } else {
+    const el = document.createElement('div')
+    el.innerHTML = html
+    return el.textContent || el.innerText || ''
+  }
 }
 
 export function stripMarkdownLength(text, length) {
diff --git a/frontend_nuxt/utils/screen.js b/frontend_nuxt/utils/screen.js
index 3d3aebc03..a32e999aa 100644
--- a/frontend_nuxt/utils/screen.js
+++ b/frontend_nuxt/utils/screen.js
@@ -3,6 +3,20 @@ import { ref, computed } from 'vue'
 const width = ref(0)
 const isClient = ref(false)
 
+// 检测移动设备的用户代理字符串
+const isMobileUserAgent = () => {
+  if (typeof navigator === 'undefined') return false
+  
+  const userAgent = navigator.userAgent.toLowerCase()
+  const mobileKeywords = [
+    'android', 'iphone', 'ipad', 'ipod', 'blackberry', 'windows phone',
+    'mobile', 'tablet', 'opera mini', 'iemobile'
+  ]
+  
+  return mobileKeywords.some(keyword => userAgent.includes(keyword))
+}
+
+// 客户端初始化
 if (typeof window !== 'undefined') {
   isClient.value = true
   width.value = window.innerWidth
@@ -11,4 +25,13 @@ if (typeof window !== 'undefined') {
   })
 }
 
-export const isMobile = computed(() => isClient.value && width.value <= 768)
+// 服务端和客户端的移动设备检测
+export const isMobile = computed(() => {
+  if (isClient.value) {
+    // 客户端：优先使用窗口宽度，如果窗口宽度不可用则使用用户代理
+    return width.value > 0 ? width.value <= 768 : isMobileUserAgent()
+  } else {
+    // 服务端：使用用户代理字符串
+    return isMobileUserAgent()
+  }
+})