diff --git a/admin-frontend-vue/src/layout/AdminLayout.vue b/admin-frontend-vue/src/layout/AdminLayout.vue
index 4d361049..7e8b3071 100644
--- a/admin-frontend-vue/src/layout/AdminLayout.vue
+++ b/admin-frontend-vue/src/layout/AdminLayout.vue
@@ -6,6 +6,11 @@ import { useAdminSessionStore } from '@/stores/admin-session'
 import { joinAdminPath } from '@/config/app'
 import { pageTitleOf, topbarUserOf } from '@/layout/topbar-model'
 import { groupKeysForActive, toSidebarEntries } from '@/layout/menu-mapper'
+import {
+  EMPTY_MENU_DESCRIPTION,
+  EMPTY_MENU_TITLE,
+  shouldShowEmptyMenu,
+} from '@/layout/empty-state'
 
 const route = useRoute()
 const router = useRouter()
@@ -15,6 +20,7 @@ const collapsed = ref(false)
 const activePath = computed(() => route.path)
 const menuEntries = computed(() => toSidebarEntries(session.menuTree))
 const openedKeys = computed(() => groupKeysForActive(menuEntries.value, route.path))
+const emptyMenu = computed(() => shouldShowEmptyMenu(menuEntries.value.length > 0, session.loading, session.initialized))
 const pageTitle = computed(() => pageTitleOf(route.meta.title))
 const userVm = computed(() => topbarUserOf(session.user))
 const logoUrl = joinAdminPath('assets', 'logo.jpg')
@@ -55,7 +61,7 @@ async function signOut() {
             </el-menu-item>
           </template>
         </el-menu>
-        <el-empty v-if="!menuEntries.length && !session.loading" description="暂无可用菜单" :image-size="72" />
+        <el-empty v-if="emptyMenu" :description="EMPTY_MENU_TITLE" :image-size="72" />
       </el-scrollbar>
 
       <button class="sidebar-collapse" type="button" @click="collapsed = !collapsed">
@@ -79,7 +85,13 @@ async function signOut() {
       </header>
       <main class="admin-content">
         <el-alert v-if="session.error" :title="session.error" type="error" show-icon :closable="false" />
-        <RouterView />
+        <el-empty
+          v-if="emptyMenu && route.path === '/'"
+          :title="EMPTY_MENU_TITLE"
+          :description="EMPTY_MENU_DESCRIPTION"
+          :image-size="96"
+        />
+        <RouterView v-else />
       </main>
     </section>
   </div>
diff --git a/admin-frontend-vue/src/layout/empty-state.ts b/admin-frontend-vue/src/layout/empty-state.ts
new file mode 100644
index 00000000..26f5fcb0
--- /dev/null
+++ b/admin-frontend-vue/src/layout/empty-state.ts
@@ -0,0 +1,11 @@
+/** 无菜单权限空状态（任务 11）文案与判定。 */
+export const EMPTY_MENU_TITLE = '暂无可用菜单'
+export const EMPTY_MENU_DESCRIPTION = '请联系管理员为你的账号分配菜单权限'
+
+/**
+ * 是否展示无菜单空态：会话已初始化、未在加载、且没有任何可渲染菜单。
+ * 加载中不闪空态；初始化失败由错误条提示而非空态。
+ */
+export function shouldShowEmptyMenu(hasMenus: boolean, loading: boolean, initialized: boolean): boolean {
+  return Boolean(initialized) && !loading && !hasMenus
+}
diff --git a/admin-frontend-vue/tests/task-11.test.ts b/admin-frontend-vue/tests/task-11.test.ts
new file mode 100644
index 00000000..913e4449
--- /dev/null
+++ b/admin-frontend-vue/tests/task-11.test.ts
@@ -0,0 +1,57 @@
+import test from 'node:test'
+import assert from 'node:assert/strict'
+import { readSource } from './helpers.ts'
+import {
+  EMPTY_MENU_DESCRIPTION,
+  EMPTY_MENU_TITLE,
+  shouldShowEmptyMenu,
+} from '../src/layout/empty-state.ts'
+
+test('test_task_011_empty_menu_state_normal_primary_path', () => {
+  // 正常主路径：初始化完成且没有任何菜单 -> 展示空态。
+  assert.equal(shouldShowEmptyMenu(false, false, true), true)
+})
+
+test('test_task_011_empty_menu_state_normal_variant_input', () => {
+  // 正常变体：有一个或多个菜单时即使没有加载也不展示空态。
+  assert.equal(shouldShowEmptyMenu(true, false, true), false)
+  assert.equal(shouldShowEmptyMenu(true, true, true), false)
+})
+
+test('test_task_011_empty_menu_state_normal_repeated_operation_is_idempotent', () => {
+  // 正常重复：判定幂等。
+  assert.equal(shouldShowEmptyMenu(false, false, true), shouldShowEmptyMenu(false, false, true))
+  assert.equal(shouldShowEmptyMenu(true, false, true), shouldShowEmptyMenu(true, false, true))
+})
+
+test('test_task_011_empty_menu_state_boundary_empty_input', () => {
+  // 边界空值：会话未初始化时不展示空态（避免误报）。
+  assert.equal(shouldShowEmptyMenu(false, false, false), false)
+  assert.equal(shouldShowEmptyMenu(false, true, false), false)
+})
+
+test('test_task_011_empty_menu_state_boundary_single_item', () => {
+  // 边界单元素：仅一个菜单即不算空。
+  assert.equal(shouldShowEmptyMenu(true, false, true), false)
+})
+
+test('test_task_011_empty_menu_state_boundary_limit_or_missing_field', () => {
+  // 边界上限/缺字段：加载中禁止闪现空态；初始化字段缺失按未就绪处理。
+  assert.equal(shouldShowEmptyMenu(false, true, true), false, '加载中不得闪现空态')
+  assert.equal(shouldShowEmptyMenu(false, false, undefined as unknown as boolean), false)
+})
+
+test('test_task_011_empty_menu_state_invalid_input_rejected', () => {
+  // 异常输入：布尔语义混乱（未初始化却已加载完）也不展示。
+  assert.equal(shouldShowEmptyMenu(false, true, undefined as unknown as boolean), false)
+})
+
+test('test_task_011_empty_menu_state_dependency_failure_returns_actionable_message', () => {
+  // 依赖失败：壳层消费空态判定与文案常量，内容级空态在根路由呈现。
+  assert.ok(EMPTY_MENU_TITLE.length > 0)
+  assert.ok(EMPTY_MENU_DESCRIPTION.length > EMPTY_MENU_TITLE.length)
+  const layout = readSource('src/layout/AdminLayout.vue')
+  assert.match(layout, /shouldShowEmptyMenu/)
+  assert.match(layout, /EMPTY_MENU_DESCRIPTION/)
+  assert.match(layout, /route\.path === '\/'/, '内容级空态限定根路由')
+})
diff --git a/admin-frontend-vue/tests/task-3.test.ts b/admin-frontend-vue/tests/task-3.test.ts
index efb38da1..557df951 100644
--- a/admin-frontend-vue/tests/task-3.test.ts
+++ b/admin-frontend-vue/tests/task-3.test.ts
@@ -31,8 +31,8 @@ test('test_task_003_layout_contract_normal_repeated_operation_is_idempotent', ()
 test('test_task_003_layout_contract_boundary_empty_input', () => {
   // 边界空值：菜单为空时应展示无菜单状态，且页面容器本身仍保留。
   const layout = readSource(LAYOUT)
-  assert.ok(layout.includes('暂无可用菜单'), '无菜单需有空状态文案')
-  assert.ok(layout.includes('menuEntries.length'), '空菜单由映射结果长度驱动')
+  assert.ok(layout.includes('el-empty'), '无菜单需有空状态占位')
+  assert.ok(layout.includes('emptyMenu'), '空菜单由空态判定驱动')
   assert.equal(occurrences(layout, '<RouterView'), 1)
 })