diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index 5130b0e..7e72eba 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -28,6 +28,7 @@ const folders = ref<FolderItem[]>([])
 const lists = ref<TaskList[]>([])
 const archivedLists = ref<TaskList[]>([])
 const tasks = ref<Task[]>([])
+const overdueTasks = ref<Task[]>([])
 const trash = ref<Task[]>([])
 const activeList = ref('')
 const activeView = ref<View>(defaultView())
@@ -227,6 +228,7 @@ const visibleTasks = computed(() => {
 const selectedTaskSubtasks = computed(() => selectedTask.value?.subtasks ?? [])
 const filteredTaskTree = computed(() => groupTaskTree(visibleTasks.value))
 const taskTree = computed(() => filteredTaskTree.value)
+const overdueTaskTree = computed(() => groupTaskTree(overdueTasks.value))
 let searchTimer: number | undefined
 watch(query, () => {
   if (searchTimer) window.clearTimeout(searchTimer)
@@ -321,6 +323,12 @@ function isoAtLocalDayOffset(offset: number) {
   day.setHours(0, 0, 0, 0)
   return day.toISOString()
 }
+async function loadOverdueTasks() {
+  const params = new URLSearchParams()
+  params.set('due_to', isoAtLocalDayOffset(0))
+  params.set('completed', 'false')
+  overdueTasks.value = await loadTaskPages(`/tasks?${params}`)
+}
 async function loadTasksPage() {
   const params = new URLSearchParams({ page: String(page.value), page_size: String(pageSize) })
   if (query.value) params.set('q', query.value)
@@ -356,6 +364,8 @@ async function loadAll() {
   try {
     if (!navigationLoaded.value) await loadNavigation()
     await loadTasksPage()
+    if (activeView.value === 'today') await loadOverdueTasks()
+    else overdueTasks.value = []
     if (page.value > totalPages.value) { page.value = totalPages.value; await loadTasksPage() }
   } catch (reason) { fail(reason) } finally { loading.value = false }
 }
@@ -389,6 +399,11 @@ async function patchTask(task: Task, patch: Partial<Task>) {
   const updated = await api(`/tasks/${task.id}`, { method: 'PATCH', body: JSON.stringify({ ...patch, version: task.version }) })
   const index = tasks.value.findIndex((item) => item.id === task.id)
   if (index >= 0) tasks.value[index] = { ...tasks.value[index], ...updated }
+  const overdueIndex = overdueTasks.value.findIndex((item) => item.id === task.id)
+  if (overdueIndex >= 0) {
+    if (updated.completed) overdueTasks.value.splice(overdueIndex, 1)
+    else overdueTasks.value[overdueIndex] = { ...overdueTasks.value[overdueIndex], ...updated }
+  }
   if (selectedTask.value?.id === task.id) selectedTask.value = { ...selectedTask.value, ...updated }
   return updated as Task
 }
@@ -682,6 +697,14 @@ onMounted(bootstrap)
           <div class="today-stat muted"><strong>{{ totalTasks }}</strong><span>今日任务</span></div>
         </section>
         <template v-if="activeView==='today'">
+          <section v-if="overdueTaskTree.length" class="overdue-section">
+            <h3 class="section-heading overdue-heading"><CalendarDays/>已过期 <span>{{overdueTaskTree.length}}</span></h3>
+            <div class="task-list overdue-list">
+              <template v-for="node in overdueTaskTree" :key="`overdue-${node.task.id}`">
+                <article class="task-row overdue-task"><button class="task-check" :aria-label="`完成${node.task.title}`" :aria-pressed="false" @click.stop="toggle(node.task)"><span class="task-check-mark" :class="`p${node.task.priority}`"></span></button><div class="task-main" role="button" tabindex="0" @click="selectTask(node.task)" @keydown.enter="selectTask(node.task)"><strong>{{node.task.title}}</strong><span class="meta"><span><CalendarDays/>{{formatDue(node.task.due_at)}}</span></span></div><span class="overdue-badge">已过期</span></article>
+              </template>
+            </div>
+          </section>
           <h3 class="section-heading"><ListTodo/>任务</h3>
         </template>
       <div class="list-toolbar"><label v-if="activeView!=='trash'"><input v-model="showCompleted" type="checkbox"> 显示已完成</label><span v-if="activeView==='trash' || totalPages > 1 || totalTasks > 0">{{ totalPages > 1 ? `第 ${page} / ${totalPages} 页 · ` : '' }}共 {{totalTasks}} 项</span><button v-if="query" class="link" @click="query=''">清除搜索</button></div>
diff --git a/frontend/src/style.css b/frontend/src/style.css
index a11187c..71b86a1 100644
--- a/frontend/src/style.css
+++ b/frontend/src/style.css
@@ -30,4 +30,4 @@ main{min-width:0;padding:27px 34px 50px;overflow:auto;background:linear-gradient
 @media(max-width:800px){.settings-grid{grid-template-columns:1fr}.tool-card.wide{grid-column:auto}.habit-row{padding:5px 4px 5px 8px}.habit-main{padding:10px 2px}.numeric-action input{width:62px}}
 .unified-fab{display:grid;place-items:center;position:fixed;z-index:60;right:20px;bottom:22px;width:56px;height:56px;border:0;border-radius:50%;background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(241,90,41,.28);transition:transform .16s ease,box-shadow .16s ease;touch-action:none;user-select:none}.unified-fab svg{width:25px;height:25px}.unified-fab:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(241,90,41,.32)}.unified-fab:active{transform:scale(.96)}.unified-fab.dragging{transform:scale(1.06);box-shadow:0 12px 28px rgba(241,90,41,.36)}.task-compose-mask{position:fixed;z-index:70;inset:0;background:rgba(45,38,31,.34);display:flex;align-items:flex-end;padding:0}.task-compose-sheet{width:100%;max-height:min(88dvh,720px);overflow:auto;background:#fffdf8;border-radius:24px 24px 0 0;padding:18px 18px calc(20px + env(safe-area-inset-bottom));box-shadow:0 -16px 42px rgba(56,40,24,.2);display:grid;gap:14px;transform-origin:var(--fab-origin-x,calc(100% - 44px)) var(--fab-origin-y,100%)}.task-compose-sheet header{display:flex;align-items:center;justify-content:space-between}.task-compose-sheet header small{color:var(--accent);font-size:10px;font-weight:800;letter-spacing:.12em}.task-compose-sheet h2{margin:2px 0 0;font-size:22px}.task-compose-sheet label{display:grid;gap:6px;color:#675f54;font-size:12px;font-weight:650}.task-compose-sheet input,.task-compose-sheet select,.task-compose-sheet textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:11px;padding:12px;outline:none;resize:vertical}.task-compose-sheet input:focus,.task-compose-sheet select:focus,.task-compose-sheet textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(241,90,41,.1)}.task-compose-row{display:grid;grid-template-columns:minmax(0,1fr) 105px;gap:10px}.task-compose-sheet footer{display:flex;justify-content:flex-end;gap:9px;padding-top:4px}.task-compose-sheet button:disabled{opacity:.45}.task-compose-enter-active,.task-compose-leave-active{transition:background .22s ease}.task-compose-enter-active .task-compose-sheet,.task-compose-leave-active .task-compose-sheet{transition:transform .28s cubic-bezier(.2,.9,.25,1.08),opacity .2s ease}.task-compose-enter-from,.task-compose-leave-to{background:rgba(45,38,31,0)}.task-compose-enter-from .task-compose-sheet,.task-compose-leave-to .task-compose-sheet{transform:translateY(36px) scale(.86);opacity:0}
 .countdown-compose-enter-active,.countdown-compose-leave-active{transition:background .24s ease}.countdown-compose-enter-active .countdown-modal,.countdown-compose-leave-active .countdown-modal{transition:transform .34s cubic-bezier(.18,.9,.28,1.16),opacity .22s ease,filter .22s ease;transform-origin:var(--fab-origin-x,calc(100% - 43px)) var(--fab-origin-y,calc(100% - 104px))}.countdown-compose-enter-from,.countdown-compose-leave-to{background:rgba(45,38,31,0)}.countdown-compose-enter-from .countdown-modal,.countdown-compose-leave-to .countdown-modal{transform:translate(20px,28px) scale(.18) rotate(8deg);opacity:0;filter:blur(5px)}@media(max-width:930px){.unified-fab{bottom:calc(82px + env(safe-area-inset-bottom))}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}
-.pager{display:flex;align-items:center;justify-content:flex-end;gap:10px;margin:0 0 14px}.pager button:disabled{opacity:.4;cursor:not-allowed}.pager span{color:var(--muted);font-size:13px}.section-heading{display:flex;align-items:center;gap:7px;margin:16px 0 10px;font-size:16px;line-height:1.35;color:#514a40}.section-heading svg{width:17px;height:17px;color:var(--accent)}.sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.more-settings{border:1px solid var(--line);border-radius:10px;background:#fff}.more-settings summary{cursor:pointer;padding:11px 13px;color:#756d61;font-size:12px;font-weight:700}.more-settings-body{display:grid;gap:12px;padding:0 13px 13px}.more-settings-body>label{display:grid;grid-template-columns:80px 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.pinned-icon{position:absolute;right:4px;top:5px}.countdown-icon{width:38px;height:38px;border-radius:12px;background:#fff2e8;display:grid;place-items:center;font-size:19px}.countdown-main{min-width:0;display:grid;gap:4px}.countdown-main>b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px;color:#3f3932}.countdown-main>small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:11px}.countdown-badges{display:flex;gap:5px}.countdown-badges em{font-style:normal;color:#8a7f72;font-size:10px}.countdown-badges em+em:before{content:'·';margin-right:5px;color:#c1b7aa}.countdown-state{display:grid;justify-items:end;gap:3px}.countdown-state strong{font-variant-numeric:tabular-nums;font-size:28px;line-height:1;color:var(--accent)}.countdown-state small{color:var(--muted);font-size:10px}.countdown-row.today .countdown-state strong,.countdown-row.today .countdown-state small{color:#71856b}.countdown-row.past .countdown-state 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86px;align-items:center;gap:11px;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;padding:10px 8px;text-align:left;color:inherit;transition:background .15s ease,transform .15s ease}.countdown-row:first-of-type{border-top:1px solid var(--line)}.countdown-row:hover{background:#fffaf3}.countdown-row:active{transform:scale(.995)}.countdown-row.pinned{background:#fff8f1}.countdown-row.today{background:#f5f8f1}.countdown-row.past{opacity:.7}.countdown-row .pinned-icon{position:absolute;right:4px;top:5px}.countdown-icon{width:38px;height:38px;border-radius:12px;background:#fff2e8;display:grid;place-items:center;font-size:19px}.countdown-main{min-width:0;display:grid;gap:4px}.countdown-main>b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:15px;color:#3f3932}.countdown-main>small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:11px}.countdown-badges{display:flex;gap:5px}.countdown-badges em{font-style:normal;color:#8a7f72;font-size:10px}.countdown-badges em+em:before{content:'·';margin-right:5px;color:#c1b7aa}.countdown-state{display:grid;justify-items:end;gap:3px}.countdown-state strong{font-variant-numeric:tabular-nums;font-size:28px;line-height:1;color:var(--accent)}.countdown-state small{color:var(--muted);font-size:10px}.countdown-row.today .countdown-state strong,.countdown-row.today .countdown-state small{color:#71856b}.countdown-row.past .countdown-state strong{color:#887d70}.countdown-focus{position:sticky;top:18px;display:grid;justify-items:start;gap:8px;border:1px solid var(--line);border-radius:16px;background:#fffdf8;padding:18px;box-shadow:0 6px 20px rgba(81,61,38,.06)}.countdown-focus>small{color:var(--muted);font-size:11px}.countdown-focus>span{font-size:27px}.countdown-focus h3{margin:0;font-size:18px}.countdown-focus p{margin:0;color:var(--muted);font-size:12px}.countdown-number{display:flex;align-items:end;gap:4px;margin-top:8px}.countdown-number strong{font-variant-numeric:tabular-nums;font-size:44px;line-height:1;font-weight:750;color:#3f3932}.countdown-number span{font-size:13px;color:#7a7165}.countdown-copy{font-size:13px;color:var(--accent)}.countdown-empty{min-height:260px;background:#fffdf8;border:1px dashed var(--line);border-radius:16px;padding:26px;color:#766d60;text-align:center;display:grid;gap:9px;place-content:center;justify-items:center}.countdown-empty svg{color:var(--accent);width:30px;height:30px}.countdown-empty span{font-size:12px}.countdown-empty button{margin-top:5px}.archived-toggle,.archived-countdowns button{display:inline-flex;align-items:center;gap:5px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 11px;font-size:12px}.archived-toggle{justify-self:start}.archived-countdowns{display:grid;gap:10px}.archived-countdowns article{display:flex;align-items:center;gap:10px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px}.archived-countdowns article b{flex:1}.archived-countdowns article small{color:var(--muted)}.countdown-detail-mask,.countdown-modal-mask{position:fixed;inset:0;background:rgba(45,38,31,.36);display:grid;padding:20px}.countdown-detail-mask{z-index:85;place-items:end center}.countdown-detail-sheet{width:min(500px,100%);background:#fffdf8;border:1px solid var(--line);border-radius:20px;box-shadow:0 12px 36px rgba(56,40,24,.18);padding:18px;display:grid;gap:16px}.countdown-detail-sheet header{display:grid;grid-template-columns:42px 1fr 44px;align-items:center;gap:10px}.countdown-detail-sheet header small{color:var(--muted);font-size:11px}.countdown-detail-sheet header h3{margin:2px 0 0;font-size:19px}.countdown-detail-sheet header button{min-width:44px;min-height:44px;border:0;background:transparent;color:#766d60;border-radius:8px;width:44px;height:44px;display:grid;place-items:center}.countdown-modal header button{min-width:44px;min-height:44px;border:0;background:transparent;color:#766d60;border-radius:8px;width:44px;height:44px;display:grid;place-items:center}.countdown-detail-days{display:flex;align-items:baseline;gap:6px;padding:8px 0}.countdown-detail-days strong{font-variant-numeric:tabular-nums;font-size:46px;line-height:1}.countdown-detail-days span{color:var(--muted)}.countdown-detail-days b{margin-left:auto;color:var(--accent);font-size:13px}.countdown-detail-sheet dl{margin:0;display:grid;gap:1px;background:var(--line)}.countdown-detail-sheet dl div{display:grid;grid-template-columns:62px 1fr;gap:10px;background:#fffdf8;padding:10px 0}.countdown-detail-sheet dt{color:var(--muted);font-size:12px}.countdown-detail-sheet dd{margin:0;font-size:13px}.countdown-detail-sheet footer{display:flex;justify-content:flex-end;gap:8px}.countdown-detail-sheet footer button{min-height:44px;display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#fff;border-radius:10px;padding:9px 13px}.countdown-modal-mask{z-index:90;place-items:center}.countdown-modal{width:min(420px,96vw);background:#fffdf8;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:18px;display:grid;gap:12px}.countdown-modal header{display:flex;justify-content:space-between;align-items:start}.countdown-modal header small{color:var(--muted)}.countdown-modal header h3{margin:2px 0 0}.countdown-modal label{display:grid;gap:6px;color:#675f54;font-size:12px;font-weight:650}.countdown-modal input,.countdown-modal select{border:1px solid var(--line);background:#fff;border-radius:10px;padding:11px 12px;outline:none}.countdown-modal input:focus,.countdown-modal select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(241,90,41,.1)}.countdown-title-fields{display:grid;grid-template-columns:72px 1fr;gap:8px}.countdown-modal footer{display:flex;justify-content:flex-end;gap:8px;padding-top:6px}.countdown-advanced{border:1px solid var(--line);border-radius:11px;background:#fffaf4}.countdown-advanced summary{min-height:44px;display:flex;align-items:center;justify-content:space-between;padding:0 12px;cursor:pointer;color:#756d61;font-size:12px;font-weight:700;list-style:none}.countdown-advanced summary::-webkit-details-marker{display:none}.countdown-advanced summary svg{width:16px;height:16px;transition:transform .16s ease}.countdown-advanced[open] summary svg{transform:rotate(180deg)}.countdown-advanced>label,.countdown-advanced>.countdown-title-fields{margin:0 12px 12px}.countdown-detail-enter-active,.countdown-detail-leave-active{transition:background .2s ease}.countdown-detail-enter-active .countdown-detail-sheet,.countdown-detail-leave-active .countdown-detail-sheet{transition:transform .24s ease,opacity .2s ease}.countdown-detail-enter-from .countdown-detail-sheet,.countdown-detail-leave-to .countdown-detail-sheet{transform:translateY(100%);opacity:.6}@media(max-width:930px){.countdown-layout{grid-template-columns:1fr}.countdown-focus{display:none}}@media(max-width:800px){.countdown-hero{align-items:center}.countdown-hero h2{font-size:19px}.countdown-row{grid-template-columns:40px minmax(0,1fr) 76px;padding:9px 4px;gap:9px}.countdown-state strong{font-size:25px}.countdown-detail-mask,.countdown-modal-mask{place-items:end;padding:0}.countdown-detail-sheet,.countdown-modal{width:100%;border-radius:22px 22px 0 0;padding:18px 16px calc(18px + env(safe-area-inset-bottom));max-height:min(88dvh,760px);overflow:auto}.countdown-view{position:relative}}
diff --git a/frontend/src/style.test.ts b/frontend/src/style.test.ts
index e7d1d80..b866cdc 100644
--- a/frontend/src/style.test.ts
+++ b/frontend/src/style.test.ts
@@ -81,7 +81,7 @@ describe('task and habit row decoration', () => {
     expect(app).not.toContain('class="sr-only" :aria-label="node.task.completed')
     expect(app).not.toContain('class="sr-only" :aria-label="subtask.completed')
     expect(app).toContain('class="task-check"')
-    expect(app.match(/class="task-check"/g)?.length).toBe(2)
+    expect(app.match(/class="task-check"/g)?.length).toBe(3)
     expect(app).toContain('class="task-check-mark"')
     expect(css).toContain('.task-check{')
     expect(css).toContain('.task-check-mark{')
@@ -112,6 +112,17 @@ describe('task and habit row decoration', () => {
     expect(css).toContain('.habit-toolbar{')
   })
 
+  it('shows unfinished overdue tasks as a separate list inside Today', () => {
+    expect(app).toContain('const overdueTasks = ref<Task[]>([])')
+    expect(app).toContain("params.set('due_to', isoAtLocalDayOffset(0))")
+    expect(app).toContain("params.set('completed', 'false')")
+    expect(app).toContain('class="overdue-section"')
+    expect(app).toContain('已过期')
+    expect(app).toContain('v-for="node in overdueTaskTree"')
+    expect(css).toContain('.overdue-section{')
+    expect(css).toContain('.overdue-heading{')
+  })
+
   it('keeps Today as a low-noise dashboard with direct empty-state actions', () => {
     expect(app).toContain('class="today-board"')
     expect(app).toContain('todayOpenTasks')