diff --git a/src/routes/admin/pages/[id]/+page.svelte b/src/routes/admin/pages/[id]/+page.svelte
index 4c7c709..557ee00 100644
--- a/src/routes/admin/pages/[id]/+page.svelte
+++ b/src/routes/admin/pages/[id]/+page.svelte
@@ -2,12 +2,12 @@
 	import { resolve } from '$app/paths';
 	import { page } from '$app/stores';
 	import type { PageData, ActionData } from './$types';
-	import MarkdownRenderer from '$lib/components/MarkdownRenderer.svelte';
-	import MarkdownEditor from '$lib/components/admin/MarkdownEditor.svelte';
+	import ContentEditor from '$lib/components/admin/ContentEditor.svelte';
+	import { EditorOutline } from '$lib/editor/outline.svelte';
 	import TextInput from '$lib/components/admin/TextInput.svelte';
 	import Button from '$lib/components/admin/Button.svelte';
 	import Alert from '$lib/components/admin/Alert.svelte';
-	import Tabs from '$lib/components/admin/Tabs.svelte';
+	import EditorSidebarTabs from '$lib/components/admin/EditorSidebarTabs.svelte';
 	import ArticleAttachments from '$lib/components/admin/ArticleAttachments.svelte';
 	import { untrack } from 'svelte';
 	import { ArrowLeft } from 'lucide-svelte';
@@ -20,6 +20,7 @@
 	let content = $state(initialData.page.content);
 	let mode = $state<'edit' | 'preview'>('edit');
 
+	const outline = new EditorOutline();
 	let sidebarTab = $state('settings');
 	let sessionUploads = $state<{ url: string; key: string; filename: string }[]>([]);
 </script>
@@ -76,30 +77,18 @@
 				</div>
 
 				<div class="editor-body">
-					{#if mode === 'edit'}
-						<MarkdownEditor
-							bind:value={content}
-							onUpload={(img) => (sessionUploads = [...sessionUploads, img])}
-						/>
-					{:else}
-						<div class="preview-area">
-							<MarkdownRenderer {content} />
-						</div>
-					{/if}
+					<ContentEditor
+						bind:value={content}
+						{mode}
+						{outline}
+						onUpload={(img) => (sessionUploads = [...sessionUploads, img])}
+					/>
 				</div>
 			</div>
 		</div>
 
 		<div class="form-sidebar">
-			<Tabs
-				tabs={[
-					{ id: 'settings', label: '设置' },
-					{ id: 'media', label: '媒体附件' }
-				]}
-				bind:activeTab={sidebarTab}
-				fullWidth={true}
-				small={true}
-			/>
+			<EditorSidebarTabs {outline} bind:activeTab={sidebarTab} />
 
 			<!-- 设置面板始终挂载（仅切换显隐），确保别名字段在提交时始终存在 -->
 			<div class="sidebar-panel" class:is-hidden={sidebarTab !== 'settings'}>
@@ -183,23 +172,15 @@
 		background: rgba(65, 155, 56, 0.1);
 	}
 
-	.preview-area {
-		padding: 20px;
-		border: 1px solid rgba(0, 0, 0, 0.12);
-		background: rgba(0, 0, 0, 0.015);
-		min-height: 400px;
-		max-height: 600px;
-		overflow-y: auto;
-	}
-
 	.form-grid {
 		display: grid;
-		grid-template-columns: 1fr 280px;
+		grid-template-columns: minmax(0, 1fr) 280px;
 		gap: 40px;
 		align-items: start;
 	}
 
 	.form-main {
+		min-width: 0;
 		width: 100%;
 	}
 
@@ -230,8 +211,7 @@
 
 		.form-sidebar {
 			position: static;
-			flex-direction: row;
-			flex-wrap: wrap;
+			flex-direction: column;
 			gap: 20px;
 			margin-top: 20px;
 		}
diff --git a/src/routes/admin/pages/new/+page.svelte b/src/routes/admin/pages/new/+page.svelte
index 5f10358..2641a06 100644
--- a/src/routes/admin/pages/new/+page.svelte
+++ b/src/routes/admin/pages/new/+page.svelte
@@ -2,12 +2,12 @@
 	import { resolve } from '$app/paths';
 	import { page } from '$app/stores';
 	import type { ActionData } from './$types';
-	import MarkdownRenderer from '$lib/components/MarkdownRenderer.svelte';
-	import MarkdownEditor from '$lib/components/admin/MarkdownEditor.svelte';
+	import ContentEditor from '$lib/components/admin/ContentEditor.svelte';
+	import { EditorOutline } from '$lib/editor/outline.svelte';
 	import TextInput from '$lib/components/admin/TextInput.svelte';
 	import Button from '$lib/components/admin/Button.svelte';
 	import Alert from '$lib/components/admin/Alert.svelte';
-	import Tabs from '$lib/components/admin/Tabs.svelte';
+	import EditorSidebarTabs from '$lib/components/admin/EditorSidebarTabs.svelte';
 	import ArticleAttachments from '$lib/components/admin/ArticleAttachments.svelte';
 
 	import { createSlugAutoHandler } from '$lib/utils/slugify';
@@ -22,6 +22,7 @@
 	let isSlugUserModified = $state(false);
 	let isGenerating = $state(false);
 
+	const outline = new EditorOutline();
 	let sidebarTab = $state('settings');
 	let sessionUploads = $state<{ url: string; key: string; filename: string }[]>([]);
 
@@ -92,30 +93,18 @@
 				</div>
 
 				<div class="editor-body">
-					{#if mode === 'edit'}
-						<MarkdownEditor
-							bind:value={content}
-							onUpload={(img) => (sessionUploads = [...sessionUploads, img])}
-						/>
-					{:else}
-						<div class="preview-area">
-							<MarkdownRenderer {content} />
-						</div>
-					{/if}
+					<ContentEditor
+						bind:value={content}
+						{mode}
+						{outline}
+						onUpload={(img) => (sessionUploads = [...sessionUploads, img])}
+					/>
 				</div>
 			</div>
 		</div>
 
 		<div class="form-sidebar">
-			<Tabs
-				tabs={[
-					{ id: 'settings', label: '设置' },
-					{ id: 'media', label: '媒体附件' }
-				]}
-				bind:activeTab={sidebarTab}
-				fullWidth={true}
-				small={true}
-			/>
+			<EditorSidebarTabs {outline} bind:activeTab={sidebarTab} />
 
 			<!-- 设置面板始终挂载（仅切换显隐），确保别名字段在提交时始终存在 -->
 			<div class="sidebar-panel" class:is-hidden={sidebarTab !== 'settings'}>
@@ -210,23 +199,15 @@
 		background: rgba(65, 155, 56, 0.1);
 	}
 
-	.preview-area {
-		padding: 20px;
-		border: 1px solid rgba(0, 0, 0, 0.12);
-		background: rgba(0, 0, 0, 0.015);
-		min-height: 400px;
-		max-height: 600px;
-		overflow-y: auto;
-	}
-
 	.form-grid {
 		display: grid;
-		grid-template-columns: 1fr 280px;
+		grid-template-columns: minmax(0, 1fr) 280px;
 		gap: 40px;
 		align-items: start;
 	}
 
 	.form-main {
+		min-width: 0;
 		width: 100%;
 	}
 
@@ -257,8 +238,7 @@
 
 		.form-sidebar {
 			position: static;
-			flex-direction: row;
-			flex-wrap: wrap;
+			flex-direction: column;
 			gap: 20px;
 			margin-top: 20px;
 		}
diff --git a/src/routes/admin/posts/[id]/+page.svelte b/src/routes/admin/posts/[id]/+page.svelte
index af59b45..adde337 100644
--- a/src/routes/admin/posts/[id]/+page.svelte
+++ b/src/routes/admin/posts/[id]/+page.svelte
@@ -5,14 +5,14 @@
 	import type { PageData, ActionData } from './$types';
 	import { deserialize } from '$app/forms';
 	import { Save, X } from 'lucide-svelte';
-	import MarkdownRenderer from '$lib/components/MarkdownRenderer.svelte';
-	import MarkdownEditor from '$lib/components/admin/MarkdownEditor.svelte';
+	import ContentEditor from '$lib/components/admin/ContentEditor.svelte';
+	import { EditorOutline } from '$lib/editor/outline.svelte';
 	import FeaturedImagePicker from '$lib/components/admin/FeaturedImagePicker.svelte';
 	import SelectDropdown from '$lib/components/admin/SelectDropdown.svelte';
 	import TextInput from '$lib/components/admin/TextInput.svelte';
 	import Button from '$lib/components/admin/Button.svelte';
 	import Alert from '$lib/components/admin/Alert.svelte';
-	import Tabs from '$lib/components/admin/Tabs.svelte';
+	import EditorSidebarTabs from '$lib/components/admin/EditorSidebarTabs.svelte';
 	import ArticleAttachments from '$lib/components/admin/ArticleAttachments.svelte';
 	import { untrack } from 'svelte';
 
@@ -33,6 +33,7 @@
 	let tagsList = $state(initialData.tags || []);
 	let seriesList = $state(initialData.series || []);
 
+	const outline = new EditorOutline();
 	let sidebarTab = $state('settings');
 	let sessionUploads = $state<{ url: string; key: string; filename: string }[]>([]);
 
@@ -166,30 +167,18 @@
 				</div>
 
 				<div class="editor-body">
-					{#if mode === 'edit'}
-						<MarkdownEditor
-							bind:value={content}
-							onUpload={(img) => (sessionUploads = [...sessionUploads, img])}
-						/>
-					{:else}
-						<div class="preview-area">
-							<MarkdownRenderer {content} />
-						</div>
-					{/if}
+					<ContentEditor
+						bind:value={content}
+						{mode}
+						{outline}
+						onUpload={(img) => (sessionUploads = [...sessionUploads, img])}
+					/>
 				</div>
 			</div>
 		</div>
 
 		<div class="form-sidebar">
-			<Tabs
-				tabs={[
-					{ id: 'settings', label: '设置' },
-					{ id: 'media', label: '媒体附件' }
-				]}
-				bind:activeTab={sidebarTab}
-				fullWidth={true}
-				small={true}
-			/>
+			<EditorSidebarTabs {outline} bind:activeTab={sidebarTab} />
 
 			<!-- 设置面板始终挂载（仅切换显隐），确保别名/分类/系列/标签等字段在提交时始终存在 -->
 			<div class="sidebar-panel" class:is-hidden={sidebarTab !== 'settings'}>
@@ -378,23 +367,15 @@
 		background: rgba(65, 155, 56, 0.1);
 	}
 
-	.preview-area {
-		padding: 20px;
-		border: 1px solid rgba(0, 0, 0, 0.12);
-		background: rgba(0, 0, 0, 0.015);
-		min-height: 400px;
-		max-height: 600px;
-		overflow-y: auto;
-	}
-
 	.form-grid {
 		display: grid;
-		grid-template-columns: 1fr 280px;
+		grid-template-columns: minmax(0, 1fr) 280px;
 		gap: 40px;
 		align-items: start;
 	}
 
 	.form-main {
+		min-width: 0;
 		width: 100%;
 	}
 
@@ -425,8 +406,7 @@
 
 		.form-sidebar {
 			position: static;
-			flex-direction: row;
-			flex-wrap: wrap;
+			flex-direction: column;
 			gap: 16px;
 			margin-top: 20px;
 		}
diff --git a/src/routes/admin/posts/new/+page.svelte b/src/routes/admin/posts/new/+page.svelte
index 0c28015..8c0723b 100644
--- a/src/routes/admin/posts/new/+page.svelte
+++ b/src/routes/admin/posts/new/+page.svelte
@@ -6,14 +6,14 @@
 	import type { PageData, ActionData } from './$types';
 	import { deserialize } from '$app/forms';
 	import { ArrowLeft, X } from 'lucide-svelte';
-	import MarkdownRenderer from '$lib/components/MarkdownRenderer.svelte';
-	import MarkdownEditor from '$lib/components/admin/MarkdownEditor.svelte';
+	import ContentEditor from '$lib/components/admin/ContentEditor.svelte';
+	import { EditorOutline } from '$lib/editor/outline.svelte';
 	import FeaturedImagePicker from '$lib/components/admin/FeaturedImagePicker.svelte';
 	import SelectDropdown from '$lib/components/admin/SelectDropdown.svelte';
 	import TextInput from '$lib/components/admin/TextInput.svelte';
 	import Button from '$lib/components/admin/Button.svelte';
 	import Alert from '$lib/components/admin/Alert.svelte';
-	import Tabs from '$lib/components/admin/Tabs.svelte';
+	import EditorSidebarTabs from '$lib/components/admin/EditorSidebarTabs.svelte';
 	import ArticleAttachments from '$lib/components/admin/ArticleAttachments.svelte';
 	import { untrack } from 'svelte';
 
@@ -47,6 +47,7 @@
 		setIsGenerating: (val) => (isGenerating = val)
 	});
 
+	const outline = new EditorOutline();
 	let sidebarTab = $state('settings');
 	let sessionUploads = $state<{ url: string; key: string; filename: string }[]>([]);
 
@@ -185,30 +186,18 @@
 				</div>
 
 				<div class="editor-body">
-					{#if mode === 'edit'}
-						<MarkdownEditor
-							bind:value={content}
-							onUpload={(img) => (sessionUploads = [...sessionUploads, img])}
-						/>
-					{:else}
-						<div class="preview-area">
-							<MarkdownRenderer {content} />
-						</div>
-					{/if}
+					<ContentEditor
+						bind:value={content}
+						{mode}
+						{outline}
+						onUpload={(img) => (sessionUploads = [...sessionUploads, img])}
+					/>
 				</div>
 			</div>
 		</div>
 
 		<div class="form-sidebar">
-			<Tabs
-				tabs={[
-					{ id: 'settings', label: '设置' },
-					{ id: 'media', label: '媒体附件' }
-				]}
-				bind:activeTab={sidebarTab}
-				fullWidth={true}
-				small={true}
-			/>
+			<EditorSidebarTabs {outline} bind:activeTab={sidebarTab} />
 
 			<!-- 设置面板始终挂载（仅切换显隐），确保别名/分类/系列/标签等字段在提交时始终存在 -->
 			<div class="sidebar-panel" class:is-hidden={sidebarTab !== 'settings'}>
@@ -397,23 +386,15 @@
 		background: rgba(65, 155, 56, 0.1);
 	}
 
-	.preview-area {
-		padding: 20px;
-		border: 1px solid rgba(0, 0, 0, 0.12);
-		background: rgba(0, 0, 0, 0.015);
-		min-height: 400px;
-		max-height: 600px;
-		overflow-y: auto;
-	}
-
 	.form-grid {
 		display: grid;
-		grid-template-columns: 1fr 280px;
+		grid-template-columns: minmax(0, 1fr) 280px;
 		gap: 40px;
 		align-items: start;
 	}
 
 	.form-main {
+		min-width: 0;
 		width: 100%;
 	}
 
@@ -444,8 +425,7 @@
 
 		.form-sidebar {
 			position: static;
-			flex-direction: row;
-			flex-wrap: wrap;
+			flex-direction: column;
 			gap: 16px;
 			margin-top: 20px;
 		}