diff --git a/src/App.vue b/src/App.vue
index c14af74..d2eb7af 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -38,10 +38,12 @@ const NARROW_NAV = '(max-width: 800px)'
 const SIDER_COLLAPSED_WIDTH = 64
 /** 展开侧栏宽度，窄屏裁切动画以内层保持该宽度。 */
 const SIDER_EXPANDED_WIDTH = 208
+/** 窄屏折叠侧栏宽度，给正文多留空间，仍覆盖 44px 点击区。 */
+const SIDER_COLLAPSED_WIDTH_NARROW = 48
+/** 窄屏展开侧栏宽度。 */
+const SIDER_EXPANDED_WIDTH_NARROW = 168
 /** 菜单图标尺寸，折叠/展开共用，避免切换时缩放。 */
 const NAV_ICON_SIZE = 20
-/** 折叠与展开共用的图标左偏移，避免切换时图标跳动。 */
-const NAV_ICON_INDENT = SIDER_COLLAPSED_WIDTH / 2 - NAV_ICON_SIZE / 2
 
 /** 应用外壳固定在视口内，业务数据仍由各工作区自行加载。 */
 const route = useRoute()
@@ -51,6 +53,12 @@ const collapsed = ref(narrow.value)
 const settingsOpen = ref(false)
 /** 窄屏折叠只裁切文字，不把菜单收成图标，避免推挤动画时错位。 */
 const menuCollapsed = computed(() => !narrow.value && collapsed.value)
+/** 当前视口下的折叠侧栏宽度。 */
+const siderCollapsedWidth = computed(() => (narrow.value ? SIDER_COLLAPSED_WIDTH_NARROW : SIDER_COLLAPSED_WIDTH))
+/** 当前视口下的展开侧栏宽度。 */
+const siderExpandedWidth = computed(() => (narrow.value ? SIDER_EXPANDED_WIDTH_NARROW : SIDER_EXPANDED_WIDTH))
+/** 折叠与展开共用的图标左偏移，避免切换时图标跳动。 */
+const navIconIndent = computed(() => siderCollapsedWidth.value / 2 - NAV_ICON_SIZE / 2)
 
 /** 视口跨过断点时：进入窄屏收回侧栏。 */
 function syncNarrow(event: MediaQueryListEvent) {
@@ -144,19 +152,25 @@ const menuOptions = computed<MenuOption[]>(() => [
         <div
             class="admin-layout"
             :style="{
-                '--admin-sider-collapsed': SIDER_COLLAPSED_WIDTH + 'px',
-                '--admin-sider-expanded': SIDER_EXPANDED_WIDTH + 'px'
+                '--admin-sider-collapsed': siderCollapsedWidth + 'px',
+                '--admin-sider-expanded': siderExpandedWidth + 'px'
             }"
         >
             <!-- 以下是主导航侧栏：宽屏与窄屏共用同一份 -->
             <aside
                 class="admin-sider"
                 :class="{ 'is-collapsed': collapsed }"
-                :style="{ width: (collapsed ? SIDER_COLLAPSED_WIDTH : SIDER_EXPANDED_WIDTH) + 'px' }"
+                :style="{ width: (collapsed ? siderCollapsedWidth : siderExpandedWidth) + 'px' }"
                 aria-label="主导航"
             >
-                <RouterLink to="/projects" class="admin-brand" aria-label="短剧工作台首页">
-                    <Clapperboard :size="24" /><span v-if="!menuCollapsed"
+                <!-- 以下是侧栏品牌：折叠仅图标，展开图标加文字 -->
+                <RouterLink
+                    to="/projects"
+                    class="admin-brand"
+                    :class="{ 'is-collapsed': collapsed }"
+                    aria-label="短剧工作台首页"
+                >
+                    <Clapperboard :size="narrow ? NAV_ICON_SIZE : 24" /><span v-if="!collapsed"
                         >短剧工作台<small>SHORT DRAMA STUDIO</small></span
                     >
                 </RouterLink>
@@ -165,13 +179,14 @@ const menuOptions = computed<MenuOption[]>(() => [
                         :value="route.path"
                         :options="menuOptions"
                         :collapsed="menuCollapsed"
-                        :collapsed-width="SIDER_COLLAPSED_WIDTH"
+                        :collapsed-width="siderCollapsedWidth"
                         :icon-size="NAV_ICON_SIZE"
                         :collapsed-icon-size="NAV_ICON_SIZE"
-                        :indent="NAV_ICON_INDENT"
-                        :root-indent="NAV_ICON_INDENT"
+                        :indent="navIconIndent"
+                        :root-indent="navIconIndent"
                     />
                 </NScrollbar>
+                <!-- 以下是侧栏底部后端连接：折叠仅图标，展开图标加文字 -->
                 <footer class="admin-sider-footer">
                     <NTooltip placement="right" :disabled="!collapsed">
                         <template #trigger>
@@ -179,12 +194,12 @@ const menuOptions = computed<MenuOption[]>(() => [
                                 quaternary
                                 block
                                 class="admin-settings-button"
-                                :class="{ 'is-collapsed': menuCollapsed }"
+                                :class="{ 'is-collapsed': collapsed }"
                                 aria-label="后端连接"
                                 @click="openSettings"
                             >
                                 <template #icon><Settings2 :size="18" /></template>
-                                <span v-if="!menuCollapsed">后端连接</span>
+                                <span v-if="!collapsed">后端连接</span>
                             </NButton>
                         </template>
                         后端连接
@@ -265,11 +280,14 @@ const menuOptions = computed<MenuOption[]>(() => [
     @apply flex-1 min-h-0;
 }
 .admin-sider-footer {
-    @apply shrink-0;
+    @apply w-full shrink-0 overflow-hidden;
     padding-block: 8px max(8px, env(safe-area-inset-bottom));
 }
 .n-button.admin-settings-button {
-    @apply justify-start h-11 px-5;
+    @apply justify-start h-11 w-full px-5;
+}
+.n-button.admin-settings-button.is-collapsed {
+    @apply justify-center px-0;
 }
 .admin-sider .n-menu .n-menu-item-content::before {
     @apply left-0 right-0 rounded-none;
@@ -277,6 +295,9 @@ const menuOptions = computed<MenuOption[]>(() => [
 .admin-brand {
     @apply flex shrink-0 items-center gap-3 h-[74px] py-0 px-5 text-ink whitespace-nowrap;
 }
+.admin-brand.is-collapsed {
+    @apply justify-center px-0;
+}
 .admin-brand > svg {
     @apply shrink-0;
 }
@@ -307,20 +328,20 @@ const menuOptions = computed<MenuOption[]>(() => [
         min-width: calc(100% - var(--admin-sider-collapsed));
         max-width: calc(100% - var(--admin-sider-collapsed));
     }
-    .admin-brand,
-    .admin-nav-scroll.n-scrollbar,
-    .admin-sider-footer {
+    .admin-nav-scroll.n-scrollbar {
         min-width: var(--admin-sider-expanded);
     }
-    .admin-brand span,
-    .admin-sider .n-menu-item-content-header,
-    .admin-settings-button span {
+    .admin-brand {
+        @apply h-12 w-full overflow-hidden;
+    }
+    .admin-sider:not(.is-collapsed) .admin-brand {
+        @apply justify-start px-3.5;
+    }
+    .admin-sider .n-menu-item-content-header {
         opacity: 1;
         transition: opacity 0.2s ease;
     }
-    .admin-sider.is-collapsed .admin-brand span,
-    .admin-sider.is-collapsed .n-menu-item-content-header,
-    .admin-sider.is-collapsed .admin-settings-button span {
+    .admin-sider.is-collapsed .n-menu-item-content-header {
         opacity: 0;
     }
     .admin-topbar {
@@ -329,9 +350,7 @@ const menuOptions = computed<MenuOption[]>(() => [
 }
 @media (prefers-reduced-motion: reduce) {
     .admin-sider,
-    .admin-brand span,
-    .admin-sider .n-menu-item-content-header,
-    .admin-settings-button span {
+    .admin-sider .n-menu-item-content-header {
         transition: none;
     }
 }
diff --git a/src/components/ui/WorkspaceTools.vue b/src/components/ui/WorkspaceTools.vue
index 4a002e9..469a202 100644
--- a/src/components/ui/WorkspaceTools.vue
+++ b/src/components/ui/WorkspaceTools.vue
@@ -11,12 +11,14 @@ const open = defineModel<boolean>('open', { default: false })
     <NButton
         class="workspace-tools-trigger"
         data-workspace-tools
+        :aria-label="label"
         aria-haspopup="dialog"
         :aria-expanded="open"
         @click="open = true"
     >
         <template #icon><Settings2 :size="15" /></template>
-        {{ label }}<span v-if="hasReceipt" class="text-xs text-muted"> · 有回执</span>
+        <span class="workspace-tools-label">{{ label }}</span
+        ><span v-if="hasReceipt" class="text-xs text-muted"> · 有回执</span>
     </NButton>
     <NDrawer
         v-model:show="open"
diff --git a/src/features/breakdown/BreakdownPage.vue b/src/features/breakdown/BreakdownPage.vue
index 63cdad4..d690b42 100644
--- a/src/features/breakdown/BreakdownPage.vue
+++ b/src/features/breakdown/BreakdownPage.vue
@@ -137,6 +137,7 @@ function exportResult() {
 <template>
     <WorkspacePage split compact class="breakdown-workspace-page">
         <template #header>
+            <!-- 以下是拆解状态与设置 -->
             <div class="workspace-toolbar">
                 <h2 class="font-semibold">剧本拆解</h2>
                 <div v-if="snapshot" class="toolbar-summary">
@@ -144,7 +145,10 @@ function exportResult() {
                         >抽取 {{ summary.completed }} / {{ summary.total }} · 失败 {{ summary.failed }}</span
                     >
                     <span>主体 {{ subjects.length }} · 分镜剧集 {{ shots.length }} / {{ plans.length }}</span>
+                </div>
+                <div v-if="snapshot || project?.episodes.length" class="toolbar-actions">
                     <StatusBadge
+                        v-if="snapshot"
                         :status="execution?.status || 'unknown'"
                         :label="
                             execution?.status === 'completed'
@@ -154,9 +158,12 @@ function exportResult() {
                                   : '执行状态待确认'
                         "
                     />
-                </div>
-                <div v-if="project?.episodes.length" class="toolbar-actions">
-                    <WorkspaceTools v-model:open="toolsOpen" title="拆解设置与恢复" label="拆解设置与恢复">
+                    <WorkspaceTools
+                        v-if="project?.episodes.length"
+                        v-model:open="toolsOpen"
+                        title="拆解设置与恢复"
+                        label="拆解设置与恢复"
+                    >
                         <section class="panel breakdown-settings-panel p-5 lg:p-6">
                             <div class="mb-5 flex flex-wrap items-start justify-between gap-3">
                                 <div>
@@ -491,6 +498,7 @@ function exportResult() {
                         :project-id="project?.id"
                         :checkpoints="checkpoints"
                         workflow="breakdown"
+                        @close="showHistory = false"
                     />
                 </div>
             </section>
@@ -583,9 +591,69 @@ function exportResult() {
 .breakdown-results-section > .content-with-history.history-hidden {
     @apply grid-cols-[minmax(0,_1fr)] grid-rows-[minmax(0,_1fr)];
 }
-@media (max-width: 760px) {
-    .breakdown-results-section > .content-with-history {
-        @apply grid-rows-[minmax(0,_1fr)_min(25%,_130px)];
+@media (max-width: 800px) {
+    .breakdown-workspace-page .workspace-heading {
+        @apply py-2 px-3;
+    }
+    .breakdown-workspace-page .workspace-toolbar {
+        @apply min-h-0 flex-nowrap gap-2;
+    }
+    .breakdown-workspace-page .workspace-toolbar h2 {
+        @apply hidden;
+    }
+    .breakdown-workspace-page .toolbar-summary {
+        @apply min-w-0 flex-1 flex-nowrap overflow-x-auto overflow-y-hidden overscroll-x-contain;
+        scrollbar-width: none;
+        mask-image: linear-gradient(to right, #000 calc(100% - 12px), transparent);
+    }
+    .breakdown-workspace-page .toolbar-summary::-webkit-scrollbar {
+        display: none;
+    }
+    .breakdown-workspace-page .toolbar-summary > * {
+        @apply shrink-0;
+    }
+    .breakdown-workspace-page .toolbar-actions {
+        @apply ml-0 shrink-0;
+    }
+    .breakdown-workspace-page .toolbar-actions > * {
+        @apply shrink-0;
+    }
+    .breakdown-workspace-page .toolbar-actions .n-tag {
+        @apply hidden;
+    }
+    .breakdown-workspace-page .workspace-tools-label {
+        @apply hidden;
+    }
+    .breakdown-workspace-page .workspace-tools-trigger {
+        @apply h-8 w-8 p-0;
+        min-width: 32px;
+    }
+    .breakdown-workspace-page .workspace-tools-trigger .n-button__icon {
+        @apply m-0;
+    }
+    .breakdown-results-section .tabs-toolbar {
+        container-type: normal;
+    }
+    .breakdown-results-section .workspace-tabs > .n-tabs-nav {
+        @apply flex-nowrap;
+    }
+    .breakdown-results-section .workspace-tabs .n-tabs-nav-scroll-wrapper {
+        @apply min-w-0 flex-1;
+        flex-basis: auto;
+    }
+    .breakdown-results-section .workspace-tabs .n-tabs-nav__suffix {
+        @apply w-auto pl-2;
+    }
+    .breakdown-results-section .tabs-toolbar-actions {
+        @apply min-h-0 flex-nowrap;
+    }
+    .breakdown-results-section .content-with-history:not(.history-hidden) {
+        @apply relative;
+        grid-template-columns: minmax(0, 1fr);
+        grid-template-rows: minmax(0, 1fr);
+    }
+    .breakdown-results-section .content-with-history:not(.history-hidden) .history-panel {
+        @apply absolute inset-0 z-30;
     }
 }
 </style>
diff --git a/src/features/breakdown/components/SubjectList.vue b/src/features/breakdown/components/SubjectList.vue
index a60b52d..6b80b2a 100644
--- a/src/features/breakdown/components/SubjectList.vue
+++ b/src/features/breakdown/components/SubjectList.vue
@@ -24,7 +24,8 @@ const filtered = computed(() =>
 </script>
 
 <template>
-    <div class="p-5 lg:p-7">
+    <div class="subject-list">
+        <!-- 以下是主体搜索 -->
         <div class="subject-list-toolbar">
             <NInput
                 class="subject-list-search"
@@ -139,6 +140,14 @@ const filtered = computed(() =>
 .subject-details[open] summary svg {
     @apply rotate-180;
 }
+.subject-list {
+    @apply p-5;
+}
+@media (min-width: 1024px) {
+    .subject-list {
+        @apply p-7;
+    }
+}
 .subject-list-toolbar {
     @apply flex flex-wrap items-center justify-start gap-y-2.5 gap-x-3 mb-5;
 }
@@ -148,4 +157,15 @@ const filtered = computed(() =>
 .subject-list-count {
     @apply shrink-0 text-muted text-xs whitespace-nowrap;
 }
+@media (max-width: 800px) {
+    .subject-list {
+        @apply p-3;
+    }
+    .subject-list-toolbar {
+        @apply flex-nowrap gap-2 mb-3;
+    }
+    .subject-list-search.n-input {
+        @apply flex-1 max-w-none;
+    }
+}
 </style>
diff --git a/src/features/create-drama/CreateDramaPage.vue b/src/features/create-drama/CreateDramaPage.vue
index 609c2d1..d86418f 100644
--- a/src/features/create-drama/CreateDramaPage.vue
+++ b/src/features/create-drama/CreateDramaPage.vue
@@ -137,7 +137,7 @@ function exportScript() {
                             />
                             <RouterLink
                                 v-if="complete"
-                                class="text-button text-accent"
+                                class="text-button text-accent script-next-link"
                                 :to="`/projects/${project?.id}/breakdown`"
                                 >进入拆解<ArrowRight :size="14"
                             /></RouterLink>
@@ -248,6 +248,7 @@ function exportScript() {
                     :project-id="project?.id"
                     :checkpoints="checkpoints"
                     workflow="create-drama"
+                    @close="showHistory = false"
                 />
             </div></div
     ></WorkspacePage>
@@ -308,6 +309,17 @@ function exportScript() {
     .script-section .tabs-toolbar-actions {
         @apply min-h-0 flex-nowrap;
     }
+    .script-section .tabs-toolbar-actions .script-next-link {
+        @apply hidden;
+    }
+    .script-section .content-with-history:not(.history-hidden) {
+        @apply relative;
+        grid-template-columns: minmax(0, 1fr);
+        grid-template-rows: minmax(0, 1fr);
+    }
+    .script-section .content-with-history:not(.history-hidden) .history-panel {
+        @apply absolute inset-0 z-30;
+    }
 }
 .script-section {
     @apply flex-1 flex flex-col min-h-0;
diff --git a/src/features/create-drama/EpisodeReader.vue b/src/features/create-drama/EpisodeReader.vue
index f70624e..8a82c79 100644
--- a/src/features/create-drama/EpisodeReader.vue
+++ b/src/features/create-drama/EpisodeReader.vue
@@ -254,15 +254,27 @@ onBeforeUnmount(() => observer?.disconnect())
         @apply grid-cols-[180px_minmax(0,_1fr)];
     }
 }
-@media (max-width: 600px) {
+@media (max-width: 800px) {
     .episode-reader {
-        @apply grid-cols-[112px_minmax(0,_1fr)];
+        @apply grid-cols-[72px_minmax(0,_1fr)];
     }
     .reader-directory-heading {
-        @apply pt-4 px-3 pb-3 flex-wrap;
+        @apply flex-col items-start gap-0 pt-2.5 px-1.5 pb-2;
+    }
+    .reader-directory-heading h3 {
+        @apply hidden;
     }
     .n-button.reader-episode-link {
-        @apply py-3 px-2.5;
+        @apply min-h-11 py-2 px-1;
+    }
+    .n-button.reader-episode-link .n-button__content {
+        @apply items-center text-center;
+    }
+    .reader-episode-title {
+        @apply hidden;
+    }
+    .reader-episode-label {
+        @apply text-[11px];
     }
     .reader-content {
         @apply px-[18px];
diff --git a/src/features/workflows/HistoryPanel.vue b/src/features/workflows/HistoryPanel.vue
index d1babf4..b820734 100644
--- a/src/features/workflows/HistoryPanel.vue
+++ b/src/features/workflows/HistoryPanel.vue
@@ -9,6 +9,10 @@ import WorkflowDiagnosticsDialog from './WorkflowDiagnosticsDialog.vue'
 
 /** 时间线只说明 checkpoint 已保存，不把每条记录误标为工作流成功。 */
 const props = defineProps<{ checkpoints: Checkpoint[]; workflow: string; projectId?: string }>()
+const emit = defineEmits<{
+    /** 关闭覆盖层中的执行记录 */
+    close: []
+}>()
 const diagnosticsOpen = ref(false)
 const history = computed(() => workflowCheckpoints(props.checkpoints, props.workflow).slice(-18).toReversed())
 </script>
@@ -16,7 +20,10 @@ const history = computed(() => workflowCheckpoints(props.checkpoints, props.work
 <template>
     <aside class="history-panel">
         <NScrollbar class="panel-scroll" content-class="history-content">
-            <h3 class="mb-1 flex items-center gap-2 text-sm font-semibold"><Clock3 :size="15" />执行记录</h3>
+            <div class="history-heading">
+                <h3 class="mb-1 flex items-center gap-2 text-sm font-semibold"><Clock3 :size="15" />执行记录</h3>
+                <NButton class="history-close" text size="small" @click="emit('close')">关闭</NButton>
+            </div>
             <p class="mb-6 text-xs leading-5 text-muted">最近 18 个 checkpoint · 自动刷新</p>
             <NButton v-if="projectId" text size="small" class="mb-4" @click="diagnosticsOpen = true"
                 >查看完整运行诊断</NButton
@@ -72,9 +79,18 @@ const history = computed(() => workflowCheckpoints(props.checkpoints, props.work
 .history-content {
     @apply py-[23px] px-[21px];
 }
-@media (max-width: 760px) {
+.history-heading {
+    @apply flex items-start justify-between gap-3;
+}
+.history-close {
+    @apply hidden;
+}
+@media (max-width: 800px) {
     .history-panel {
-        @apply overflow-hidden min-h-0;
+        @apply overflow-hidden min-h-0 bg-(--app-subtle);
+    }
+    .history-close {
+        @apply inline-flex shrink-0;
     }
 }
 </style>
diff --git a/src/styles/admin.css b/src/styles/admin.css
index c2df976..719fc58 100644
--- a/src/styles/admin.css
+++ b/src/styles/admin.css
@@ -238,6 +238,12 @@ body {
     height: 32px;
     white-space: nowrap;
 }
+.tabs-toolbar-actions .n-button.icon-button {
+    width: 32px;
+    min-width: 32px;
+    height: 32px;
+    padding: 0;
+}
 /* 窄内容区允许 suffix 独占一行；Tabs 本身继续使用组件内置横向滚动。 */
 @container tabs-toolbar (max-width: 600px) {
     .workspace-tabs > .n-tabs-nav {
diff --git a/tests/components/ui/layout.test.ts b/tests/components/ui/layout.test.ts
index 470de4f..1b5859a 100644
--- a/tests/components/ui/layout.test.ts
+++ b/tests/components/ui/layout.test.ts
@@ -31,6 +31,9 @@ describe('管理后台组件边界', () => {
         expect(css).toMatch(/\.workspace-tabs > \.n-tabs-nav\s*\{[^}]*align-items:\s*stretch;/)
         expect(css).toMatch(/\.workspace-tabs \.n-tabs-nav__suffix\s*\{[^}]*align-items:\s*center;/)
         expect(css).toMatch(/\.tabs-toolbar-actions\s*\{[^}]*align-items:\s*center;[^}]*min-height:\s*40px;/)
+        expect(css).toMatch(
+            /\.tabs-toolbar-actions \.n-button\.icon-button\s*\{[^}]*width:\s*32px;[^}]*min-width:\s*32px;[^}]*height:\s*32px;[^}]*padding:\s*0/
+        )
         expect(css).toContain('@container tabs-toolbar (max-width: 600px)')
         expect(css).not.toContain('.result-toolbar > .n-button')
     })
@@ -82,7 +85,9 @@ describe('管理后台组件边界', () => {
         expect(css).toMatch(
             /\.breakdown-results-section > \.content-with-history\s*\{[^}]*flex:\s*1;[^}]*height:\s*auto;[^}]*min-height:\s*0;[^}]*grid-template-rows:\s*minmax\(0, 1fr\)/
         )
-        expect(css).toContain('grid-template-rows: minmax(0, 1fr) min(25%, 130px)')
+        expect(css).toMatch(
+            /@media \(max-width: 800px\)[\s\S]*?\.breakdown-results-section \.content-with-history:not\(\.history-hidden\) \.history-panel\s*\{[^}]*inset:\s*0/
+        )
         expect(css).toMatch(/\.panel-scroll\.n-scrollbar\s*\{[^}]*height:\s*100%;[^}]*min-height:\s*0/)
     })
     it('标题与内容使用各自滚动容器，不随正文一起滚动', () => {
@@ -173,6 +178,9 @@ describe('管理后台组件边界', () => {
         expect(css).toMatch(/\.admin-sider\s*\{[^}]*display:\s*flex;[^}]*flex-direction:\s*column;[^}]*height:\s*100%/)
         expect(css).toMatch(/\.admin-nav-scroll\.n-scrollbar\s*\{[^}]*flex:\s*1;[^}]*min-height:\s*0/)
         expect(css).toMatch(/\.admin-sider-footer\s*\{[^}]*flex-shrink:\s*0/)
+        expect(css).toMatch(/\.n-button\.admin-settings-button\.is-collapsed\s*\{[^}]*justify-content:\s*center/)
+        expect(css).toMatch(/\.admin-brand\.is-collapsed\s*\{[^}]*justify-content:\s*center/)
+        expect(css).toMatch(/@media \(max-width: 800px\)[\s\S]*?\.admin-brand\s*\{[^}]*height:\s*48px/)
         expect(css).toContain('@media (max-width: 800px)')
         expect(css).toMatch(/transition:\s*width\s+0\.32s/)
         expect(css).toContain('calc(100% - var(--admin-sider-collapsed))')
@@ -219,22 +227,41 @@ describe('管理后台组件边界', () => {
         await flushPromises()
         expect(wrapper.findAll('.admin-sider')).toHaveLength(1)
         expect(wrapper.get('.admin-sider').classes()).toContain('is-collapsed')
-        expect(wrapper.get('.admin-sider').attributes('style')).toContain('width: 64px')
+        expect(wrapper.get('.admin-sider').attributes('style')).toContain('width: 48px')
         expect(wrapper.find('.admin-sider-mask').exists()).toBe(false)
         expect(wrapper.find('.admin-nav-drawer').exists()).toBe(false)
+        expect(wrapper.getComponent(NMenu).props()).toMatchObject({
+            collapsedWidth: 48,
+            indent: 14,
+            rootIndent: 14
+        })
+        const collapsedBrand = wrapper.get('.admin-brand')
+        expect(collapsedBrand.classes()).toContain('is-collapsed')
+        expect(collapsedBrand.text()).toBe('')
+        const collapsedSettings = wrapper.get('.admin-sider-footer [aria-label="后端连接"]')
+        expect(collapsedSettings.text()).toBe('')
+        expect(collapsedSettings.classes()).toContain('is-collapsed')
         await wrapper.get('[aria-label="展开侧栏"]').trigger('click')
         await flushPromises()
         expect(wrapper.findAll('.admin-sider')).toHaveLength(1)
         expect(wrapper.get('.admin-sider').classes()).not.toContain('is-collapsed')
         expect(wrapper.get('.admin-sider').classes()).not.toContain('is-overlay')
-        expect(wrapper.get('.admin-sider').attributes('style')).toContain('width: 208px')
+        expect(wrapper.get('.admin-sider').attributes('style')).toContain('width: 168px')
         expect(wrapper.find('.admin-sider-mask').exists()).toBe(false)
         expect(wrapper.get('.admin-sider').findAll('.n-menu .n-menu-item')).toHaveLength(8)
         expect(wrapper.get('[aria-label="折叠侧栏"]').attributes('aria-expanded')).toBe('true')
+        const expandedBrand = wrapper.get('.admin-brand')
+        expect(expandedBrand.classes()).not.toContain('is-collapsed')
+        expect(expandedBrand.text()).toContain('短剧工作台')
+        const expandedSettings = wrapper.get('.admin-sider-footer [aria-label="后端连接"]')
+        expect(expandedSettings.text()).toBe('后端连接')
+        expect(expandedSettings.classes()).not.toContain('is-collapsed')
         await wrapper.get('[aria-label="折叠侧栏"]').trigger('click')
         await flushPromises()
         expect(wrapper.get('.admin-sider').classes()).toContain('is-collapsed')
-        expect(wrapper.get('.admin-sider').attributes('style')).toContain('width: 64px')
+        expect(wrapper.get('.admin-sider').attributes('style')).toContain('width: 48px')
+        expect(wrapper.get('.admin-brand').text()).toBe('')
+        expect(wrapper.get('.admin-sider-footer [aria-label="后端连接"]').text()).toBe('')
     })
 
     it('长弹窗使用内部滚动，提交期间禁止遮罩和 Esc 关闭', async () => {
diff --git a/tests/features/breakdown/BreakdownPage.test.ts b/tests/features/breakdown/BreakdownPage.test.ts
index 585fb30..2da09a2 100644
--- a/tests/features/breakdown/BreakdownPage.test.ts
+++ b/tests/features/breakdown/BreakdownPage.test.ts
@@ -222,8 +222,8 @@ describe('拆解页内容滚动', () => {
         expect(wrapper!.findAll('.subject-record-list > article')).toHaveLength(30)
     })
 
-    it('主体搜索与统计靠左居中，窄内容区可换行，输入框不再使用外置图标容器', () => {
-        // DOM 环境不计算布局，保护输入框宽度、主题统计色与窄屏换行的样式契约。
+    it('主体搜索与统计靠左居中，窄屏搜索拉满同一行，输入框不再使用外置图标容器', () => {
+        // DOM 环境不计算布局，保护输入框宽度、主题统计色与窄屏单行搜索的样式契约。
         const css = readAllStyles()
         expect(css).toMatch(
             /\.subject-list-toolbar\s*\{[^}]*display:\s*flex;[^}]*flex-wrap:\s*wrap;[^}]*align-items:\s*center;[^}]*justify-content:\s*flex-start;/
@@ -232,9 +232,19 @@ describe('拆解页内容滚动', () => {
             /\.subject-list-search\.n-input\s*\{[^}]*flex:\s*0 1 260px;[^}]*min-width:\s*0;[^}]*max-width:\s*100%;/
         )
         expect(css).toMatch(/\.subject-list-count\s*\{[^}]*color:\s*var\(--app-muted\);/)
+        expect(css).toMatch(/@media \(max-width: 800px\)[\s\S]*?\.subject-list-search\.n-input\s*\{[^}]*flex:\s*1/)
         expect(css + readFileSync('src/styles/styles.css', 'utf8')).not.toContain('.search-field')
     })
 
+    it('窄屏收口拆解顶栏并隐藏重复标题，设置按钮保留图标', () => {
+        const css = readAllStyles()
+        expect(css).toMatch(/@media \(max-width: 800px\)[\s\S]*?\.workspace-toolbar h2\s*\{[^}]*display:\s*none/)
+        expect(css).toMatch(/@media \(max-width: 800px\)[\s\S]*?\.workspace-tools-label\s*\{[^}]*display:\s*none/)
+        expect(css).toMatch(
+            /@media \(max-width: 800px\)[\s\S]*?\.workspace-tools-trigger\s*\{[^}]*height:\s*32px;[^}]*width:\s*32px/
+        )
+    })
+
     it.each([
         ['人物', 'character'],
         ['场景', 'scene'],
diff --git a/tests/features/create-drama/EpisodeReader.test.ts b/tests/features/create-drama/EpisodeReader.test.ts
index bc8d158..a27ad9d 100644
--- a/tests/features/create-drama/EpisodeReader.test.ts
+++ b/tests/features/create-drama/EpisodeReader.test.ts
@@ -71,7 +71,8 @@ describe('连续剧本阅读器', () => {
         expect(content).toContain('padding: 32px')
         expect(content).toContain('text-align: left')
         expect(content).not.toContain('auto')
-        expect(css).toMatch(/@media \(max-width: 600px\)[\s\S]*?\.reader-content\s*\{\s*padding-inline:\s*18px/)
+        expect(css).toMatch(/@media \(max-width: 800px\)[\s\S]*?\.reader-content\s*\{\s*padding-inline:\s*18px/)
+        expect(css).toMatch(/@media \(max-width: 800px\)[\s\S]*?\.episode-reader\s*\{[^}]*72px/)
     })
 
     it('按编号连续渲染全部剧集、元数据和空正文，标题不截断，模型内容只按文本显示', () => {
diff --git a/tests/features/workflows/pages.test.ts b/tests/features/workflows/pages.test.ts
index 03907b4..0ea0b51 100644
--- a/tests/features/workflows/pages.test.ts
+++ b/tests/features/workflows/pages.test.ts
@@ -20,6 +20,7 @@ import {
 } from '@/features/storyboard/testing/fixtures'
 import { getStoryboardSession } from '@/features/storyboard/model'
 import { getOperation } from '@/features/workflows/operations'
+import { readAllStyles } from '@/testing/styles'
 import SubjectImagesPage from '@/features/subject-images/SubjectImagesPage.vue'
 import { formFixture, imageFixture } from '@/features/subject-images/testing/fixtures'
 import { getImageSession } from '@/features/subject-images/model'
@@ -1432,6 +1433,13 @@ describe('工作台页面交互', () => {
         expect(provided.refresh).toHaveBeenCalledOnce()
     })
 
+    it('窄屏隐藏进入拆解，选择器需压过工具栏文字按钮', () => {
+        const css = readAllStyles()
+        expect(css).toMatch(
+            /@media \(max-width: 800px\)[\s\S]*?\.tabs-toolbar-actions \.script-next-link\s*\{[^}]*display:\s*none/
+        )
+    })
+
     it('切换剧本标签保留阅读容器和位置，执行记录按需展开', async () => {
         wrapper = mount(CreateDramaPage, {
             attachTo: document.body,