diff --git a/frontend-vue/src/pages/amazon/AmazonConsolePage.vue b/frontend-vue/src/pages/amazon/AmazonConsolePage.vue
index 1457ce8b..5b4a8c66 100644
--- a/frontend-vue/src/pages/amazon/AmazonConsolePage.vue
+++ b/frontend-vue/src/pages/amazon/AmazonConsolePage.vue
@@ -69,6 +69,7 @@
                 :class="{ 'workflow-step--disabled': !step.toolId || !stepHref(step.toolId) }"
                 :style="{ '--gc': currentGroup.color }"
                 @click="onWorkflowStepClick(step)"
+                @mouseenter="prefetchRouteChunk(router, stepHref(step.toolId))"
               >
                 <span class="step-circle" :style="circleStyle(currentGroup)">{{ index + 1 }}</span>
                 <span class="step-name">{{ step.name }}</span>
@@ -88,7 +89,7 @@
 
         <div class="card-grid">
           <template v-for="tool in currentGroup.tools" :key="tool.id">
-            <router-link v-if="resolveHref(tool.href)" :to="resolveHref(tool.href)!" class="tool-card" :style="cardStyle(currentGroup)">
+            <router-link v-if="resolveHref(tool.href)" :to="resolveHref(tool.href)!" class="tool-card" :style="cardStyle(currentGroup)" @mouseenter="prefetchToolChunk(tool)">
               <div class="tool-card-top">
                 <ToolIcon :name="tool.id" />
                 <span v-if="tool.tag" class="tool-tag" :style="tagStyle(currentGroup)">{{ tool.tag }}</span>
@@ -129,6 +130,7 @@ import { TUTORIAL_DOWNLOAD_URL } from '@/pages/amazon/download-btn'
 import { filterGroupsByPermission, filterWorkflowByPermission, TOOL_GROUPS, TOOL_MAP } from '@/pages/amazon/tool-catalog'
 import type { ToolGroup, ToolInfo, VisibleGroup, WorkflowStep } from '@/pages/amazon/tool-catalog'
 import { resolvePageHref } from '@/shared/page-prefix'
+import { prefetchRouteChunk } from '@/shared/route-prefetch'
 import { getPywebviewApi } from '@/shared/bridges/pywebview'
 import { getCurrentUserAppColumnKeys } from '@/shared/api/permission'
 
@@ -187,6 +189,11 @@ function onWorkflowStepClick(step: WorkflowStep) {
   showSoon(target?.href ? `${step.name}仅桌面客户端可用` : `${step.name}暂未开通，敬请期待`)
 }
 
+/** 卡片 hover 预取目标页 chunk：弱网下点击跳转不再等 chunk 下载 */
+function prefetchToolChunk(tool: ToolInfo) {
+  prefetchRouteChunk(router, resolveHref(tool.href))
+}
+
 function onPendingClick(tool: ToolInfo) {
   if (!tool.href) {
     showSoon(`${tool.name}暂未开通，敬请期待`)
diff --git a/frontend-vue/src/pages/brand/components/BrandTopBar.vue b/frontend-vue/src/pages/brand/components/BrandTopBar.vue
index c92dff41..f90f922d 100644
--- a/frontend-vue/src/pages/brand/components/BrandTopBar.vue
+++ b/frontend-vue/src/pages/brand/components/BrandTopBar.vue
@@ -13,7 +13,7 @@
         <div class="nav-section-title">{{ group.label }}</div>
         <div class="nav-section-items">
           <template v-for="item in group.items" :key="item.key">
-            <router-link v-if="item.href" :to="item.href" class="nav-item" :class="{ active: active === item.key }">
+            <router-link v-if="item.href" :to="item.href" class="nav-item" :class="{ active: active === item.key }" @mouseenter="onNavItemHover(item.href)">
               {{ item.label }}
             </router-link>
             <span v-else class="nav-item disabled" :class="{ active: active === item.key }">
@@ -36,7 +36,11 @@ import { computed, onMounted, ref } from 'vue'
 
 import BrandApiSecretSettingsButton from '@/pages/brand/components/BrandApiSecretSettingsButton.vue'
 import { getCurrentUserAppColumnKeys } from '@/shared/api/permission'
+import { prefetchRouteChunk } from '@/shared/route-prefetch'
 import DownloadProgressPanel from '@/shared/components/DownloadProgressPanel.vue'
+import { useRouter } from 'vue-router'
+
+const router = useRouter()
 
 type ActiveNavKey =
   | 'brand'
@@ -160,6 +164,11 @@ onMounted(async () => {
     allowedColumnKeys.value = []
   }
 })
+
+/** 导航项 hover 预取目标页 chunk：弱网下点击跳转不再等 chunk 下载 */
+function onNavItemHover(href?: string) {
+  prefetchRouteChunk(router, href)
+}
 </script>
 
 <style scoped>
diff --git a/frontend-vue/src/pages/home/DesktopHomePage.vue b/frontend-vue/src/pages/home/DesktopHomePage.vue
index 66f266f3..60edd924 100644
--- a/frontend-vue/src/pages/home/DesktopHomePage.vue
+++ b/frontend-vue/src/pages/home/DesktopHomePage.vue
@@ -1,5 +1,5 @@
 <template>
-  <div class="home-root" :class="{ 'nav-permissions-loading': !permissionReady }">
+  <div class="home-root">
     <header class="header">
       <span class="header-title">数富AI</span>
       <div class="header-right">
@@ -59,7 +59,7 @@
 <script setup lang="ts">
 import { computed, onMounted, ref } from 'vue'
 import { restoreLoginUser } from '@/shared/auth/ensure-auth'
-import { getCurrentUserAppColumnRaw, type PermissionMenuItem } from '@/shared/api/permission'
+import { getCurrentUserAppColumnRaw, readCachedAppColumnPermissions, type PermissionMenuItem } from '@/shared/api/permission'
 import { useVersionUpdate } from '@/shared/composables/useVersionUpdate'
 import { resolvePageHref } from '@/shared/page-prefix'
 
@@ -73,10 +73,10 @@ const { checking, updating, currentVersion, hasUpdate, canDownload, hint, checke
 const logoutHref = computed(() => `${resolvePageHref('/new_web_source/login.html')}?logout=1`)
 
 // 桌面端首页仅保留一级入口：亚马逊 / 视频；图片已收进视频页（/image-video）二级菜单。
+// 入口先乐观显示（接口返回后按权限隐藏），避免权限接口慢时首页入口空白"点不了"。
 type PermissionState = { amazon: boolean; video: boolean }
-const permissionState = ref<PermissionState>({ amazon: false, video: false })
+const permissionState = ref<PermissionState>({ amazon: true, video: true })
 const permissionUnavailable = ref(false)
-const permissionReady = ref(false)
 
 const amazonHref = computed(() => resolvePageHref('/new_web_source/amazon-console.html'))
 const videoHref = computed(() => resolvePageHref('/new_web_source/image-video.html'))
@@ -125,18 +125,24 @@ async function loadPermissions() {
   const currentUid = getUid()
   if (!currentUid) {
     permissionUnavailable.value = true
-    permissionReady.value = true
     return
   }
+  // 先用本地缓存立即渲染入口（有缓存时接口失败也不让入口消失）
+  const cached = readCachedAppColumnPermissions(Number(currentUid))
+  if (cached) {
+    permissionState.value = computePermissionState(cached)
+  }
   try {
     // 经 shared/api/permission 层拉取原始权限菜单项（含本地缓存写入；接口失败走 catch）
     const items = await getCurrentUserAppColumnRaw()
     permissionState.value = computePermissionState(items)
     permissionUnavailable.value = false
   } catch {
-    permissionUnavailable.value = true
+    // 无缓存才退回"显示全部入口"；有缓存已按缓存显示，保持现状即可
+    if (!cached) {
+      permissionUnavailable.value = true
+    }
   }
-  permissionReady.value = true
 }
 
 async function loadCurrentUser() {
@@ -339,10 +345,6 @@ body {
   min-height: 18px;
 }
 
-.home-root.nav-permissions-loading .entrance-btn {
-  visibility: hidden;
-}
-
 .entrances {
   display: flex;
   gap: 32px;
diff --git a/frontend-vue/src/router/index.ts b/frontend-vue/src/router/index.ts
index 41084d1d..1a2c9ba6 100644
--- a/frontend-vue/src/router/index.ts
+++ b/frontend-vue/src/router/index.ts
@@ -135,4 +135,41 @@ const router = createRouter({
   },
 })
 
+// 懒加载 chunk 加载失败（网络抖动/瞬间断流）会被 vue-router 静默吞掉，
+// 菜单点击表现为"点了没反应"；此处统一重载页面（重新拉最新 index.html 与新 chunk）。
+// 用会话内计数做保险丝，网络持续异常时最多重载 2 次，不再死循环。
+router.onError((error) => {
+  const message = String((error as Error)?.message || '')
+  const isChunkLoadError =
+    message.includes('Failed to fetch dynamically imported module') ||
+    message.includes('Importing a module script failed')
+  if (isChunkLoadError) {
+    const RELOAD_KEY = 'spa-chunk-reload-count'
+    let count = 0
+    try {
+      count = Number(sessionStorage.getItem(RELOAD_KEY) || '0') || 0
+    } catch {
+      /* 存储不可用时按首次处理 */
+    }
+    if (count < 2) {
+      try {
+        sessionStorage.setItem(RELOAD_KEY, String(count + 1))
+      } catch {
+        /* 忽略存储异常 */
+      }
+      console.error(`[router] 页面资源加载失败，重载页面（第 ${count + 1} 次）:`, error)
+      window.location.reload()
+      return
+    }
+    try {
+      sessionStorage.removeItem(RELOAD_KEY)
+    } catch {
+      /* 忽略存储异常 */
+    }
+    console.error('[router] 页面资源多次加载失败，停止重载:', error)
+  } else {
+    console.error('[router] 路由导航失败:', error)
+  }
+})
+
 export default router
diff --git a/frontend-vue/src/shared/api/types/modules/permission.ts b/frontend-vue/src/shared/api/types/modules/permission.ts
index acda14f3..549f2495 100644
--- a/frontend-vue/src/shared/api/types/modules/permission.ts
+++ b/frontend-vue/src/shared/api/types/modules/permission.ts
@@ -37,6 +37,40 @@ function getAppPermissionCacheKey(uid: number) {
   return `app_column_permissions:${String(uid)}`
 }
 
+/** 权限缓存有效期：10 分钟内直接用本地缓存渲染菜单/入口，避免接口慢时入口消失 */
+const PERMISSION_CACHE_TTL_MS = 10 * 60 * 1000
+
+interface CachedAppPermissions {
+  ts: number
+  items: PermissionMenuItem[]
+}
+
+/**
+ * 读取本地缓存的权限菜单项（兼容旧版纯数组格式：无时间戳视为长期有效）。
+ * 接口失败/超时时由调用方用它兜底，保证菜单不因权限接口抖动而消失。
+ */
+export function readCachedAppColumnPermissions(uid: number): PermissionMenuItem[] | null {
+  try {
+    const raw = window.localStorage.getItem(getAppPermissionCacheKey(uid)) || ''
+    if (!raw) return null
+    const parsed: unknown = JSON.parse(raw)
+    if (Array.isArray(parsed)) {
+      return parsed as PermissionMenuItem[]
+    }
+    if (
+      parsed &&
+      typeof parsed === 'object' &&
+      Array.isArray((parsed as CachedAppPermissions).items) &&
+      Date.now() - Number((parsed as CachedAppPermissions).ts || 0) < PERMISSION_CACHE_TTL_MS
+    ) {
+      return (parsed as CachedAppPermissions).items
+    }
+    return null
+  } catch {
+    return null
+  }
+}
+
 function getAuthToken() {
   return typeof window === 'undefined' ? '' : window.localStorage.getItem('aiimage_auth_token') || ''
 }
@@ -70,6 +104,8 @@ async function fetchAppColumnPermissions() {
     {
       params: { menuType: 'app' },
       headers,
+      // 权限接口只决定菜单显隐：8s 未返回即失败走缓存兜底，避免入口区长时间空白
+      timeout: 8000,
     },
   )
 
@@ -79,7 +115,7 @@ async function fetchAppColumnPermissions() {
 
   const items = res.data || res.items || []
   try {
-    window.localStorage.setItem(cacheKey, JSON.stringify(items))
+    window.localStorage.setItem(cacheKey, JSON.stringify({ ts: Date.now(), items }))
   } catch (_error) {}
 
   return items
diff --git a/frontend-vue/src/shared/route-prefetch.ts b/frontend-vue/src/shared/route-prefetch.ts
new file mode 100644
index 00000000..0d4e1e81
--- /dev/null
+++ b/frontend-vue/src/shared/route-prefetch.ts
@@ -0,0 +1,34 @@
+import type { Router } from 'vue-router'
+
+/**
+ * 路由懒加载 chunk 预取
+ *
+ * 页面均为动态 import（每页独立 chunk，见 src/router/index.ts），首次进入某页
+ * 需现场从线上拉取 chunk。菜单 hover 时提前触发 import()（结果被 router 缓存，
+ * 点击时直接命中缓存），弱网下显著减少"点了没反应/跳转慢"的等待时间。
+ */
+
+/** 触发目标路由的懒加载 chunk 预取；href 为空或预取失败时静默（点击时会走 onError 兜底） */
+export function prefetchRouteChunk(router: Router, href?: string): void {
+  if (!href) return
+  let target = href.trim()
+  const hashIndex = target.indexOf('#')
+  if (hashIndex >= 0) {
+    target = target.slice(0, hashIndex)
+  }
+  try {
+    const resolved = router.resolve(target)
+    const component = resolved.matched[0]?.components?.default as unknown
+    // 懒加载路由的 default 是 () => import(...) 加载器：调用即触发 chunk 下载（结果被 vue-router 缓存）
+    if (typeof component === 'function') {
+      const result = (component as () => unknown)()
+      if (result && typeof (result as Promise<unknown>).then === 'function') {
+        void (result as Promise<unknown>).catch(() => {
+          /* 预取失败静默，点击时统一由 router.onError 兜底 */
+        })
+      }
+    }
+  } catch {
+    /* 路径无法解析时忽略 */
+  }
+}