diff --git a/qwen3-tts-backend/core/audiobook_service.py b/qwen3-tts-backend/core/audiobook_service.py
index ce09250..0df2a72 100644
--- a/qwen3-tts-backend/core/audiobook_service.py
+++ b/qwen3-tts-backend/core/audiobook_service.py
@@ -225,8 +225,16 @@ async def analyze_project(project_id: int, user: User, db: Session, turbo: bool
         if not has_narrator:
             characters_data.insert(0, {
                 "name": "narrator",
-                "description": "旁白叙述者",
-                "instruct": "中性声音，语速平稳，叙述感强"
+                "gender": "未知",
+                "description": "第三人称旁白叙述者",
+                "instruct": (
+                    "音色信息：浑厚醇厚的男性中低音，嗓音饱满有力，带有传统说书人的磁性与感染力\n"
+                    "身份背景：中国传统说书艺人，精通评书、章回小说叙述艺术，深谙故事节奏与听众心理\n"
+                    "年龄设定：中年男性，四五十岁，声音历经岁月沉淀，成熟稳重而不失活力\n"
+                    "外貌特征：面容沉稳，气度从容，台风大气，给人以可信赖的叙述者印象\n"
+                    "性格特质：沉稳睿智，叙事冷静客观，情到深处能引发共鸣，不动声色间娓娓道来\n"
+                    "叙事风格：语速适中偏慢，抑扬顿挫，擅长铺垫悬念，停顿恰到好处，语气庄重而生动，富有画面感"
+                )
             })
 
         ps.append_line(key, f"\n\n[完成] 发现 {len(characters_data)} 个角色：{', '.join(c.get('name', '') for c in characters_data)}")
diff --git a/qwen3-tts-backend/core/llm_service.py b/qwen3-tts-backend/core/llm_service.py
index b93613b..43f8a37 100644
--- a/qwen3-tts-backend/core/llm_service.py
+++ b/qwen3-tts-backend/core/llm_service.py
@@ -131,6 +131,13 @@ class LLMService:
             "5. 性格特质：核心性格、情绪模式、表达习惯\n"
             "6. 叙事风格：语速节奏、停顿习惯、语气色彩、整体叙述感\n\n"
             "注意：instruct 的第一行（音色信息）必须与 gender 字段保持一致。如果 gender 为女，第一行绝对不能出现'男性'字样。\n\n"
+            "【特别规定】narrator（旁白）的 instruct 必须固定描述为传统说书人风格，参考如下模板（根据书籍风格可微调措辞，但风格不变）：\n"
+            "音色信息：浑厚醇厚的男性中低音，嗓音饱满有力，带有传统说书人的磁性与感染力\n"
+            "身份背景：中国传统说书艺人，精通评书、章回小说叙述艺术，深谙故事节奏与听众心理\n"
+            "年龄设定：中年男性，四五十岁，声音历经岁月沉淀，成熟稳重而不失活力\n"
+            "外貌特征：面容沉稳，气度从容，台风大气，给人以可信赖的叙述者印象\n"
+            "性格特质：沉稳睿智，叙事冷静客观，情到深处能引发共鸣，不动声色间娓娓道来\n"
+            "叙事风格：语速适中偏慢，抑扬顿挫，擅长铺垫悬念，停顿恰到好处，语气庄重而生动，富有画面感\n\n"
             "只输出JSON，格式如下，不要有其他文字：\n"
             '{"characters": [{"name": "narrator", "gender": "未知", "description": "第三人称叙述者", "instruct": "音色信息：...\\n身份背景：...\\n年龄设定：...\\n外貌特征：...\\n性格特质：...\\n叙事风格：..."}, ...]}'
         )
diff --git a/qwen3-tts-frontend/src/pages/Audiobook.tsx b/qwen3-tts-frontend/src/pages/Audiobook.tsx
index 6370983..91bfe14 100644
--- a/qwen3-tts-frontend/src/pages/Audiobook.tsx
+++ b/qwen3-tts-frontend/src/pages/Audiobook.tsx
@@ -1,7 +1,7 @@
 import { useState, useEffect, useCallback, useRef } from 'react'
 import { useTranslation } from 'react-i18next'
 import { toast } from 'sonner'
-import { Book, Plus, Trash2, RefreshCw, Download, ChevronDown, ChevronUp, Play, Square, Pencil, Check, X, Loader2, Zap, Settings2 } from 'lucide-react'
+import { Book, Plus, Trash2, RefreshCw, Download, ChevronDown, ChevronUp, Play, Square, Pencil, Check, X, Loader2, Zap, Settings2, PanelLeftClose, PanelLeftOpen } from 'lucide-react'
 import { Button } from '@/components/ui/button'
 import { Input } from '@/components/ui/input'
 import { Textarea } from '@/components/ui/textarea'
@@ -334,6 +334,8 @@ function ProjectListSidebar({
   onNew,
   onLLM,
   loading,
+  collapsed,
+  onToggle,
 }: {
   projects: AudiobookProject[]
   selectedId: number | null
@@ -341,41 +343,55 @@ function ProjectListSidebar({
   onNew: () => void
   onLLM: () => void
   loading: boolean
+  collapsed: boolean
+  onToggle: () => void
 }) {
   const { t } = useTranslation('audiobook')
   return (
-    <div className="w-60 shrink-0 flex flex-col border-r overflow-hidden">
-      <div className="flex items-center justify-between px-3 py-2 border-b shrink-0">
-        <span className="text-sm font-semibold">{t('title')}</span>
-        <div className="flex items-center gap-0.5">
-          <Button size="icon" variant="ghost" className="h-7 w-7" onClick={onLLM} title={t('llmConfig')}>
-            <Settings2 className="h-4 w-4" />
-          </Button>
-          <Button size="icon" variant="ghost" className="h-7 w-7" onClick={onNew} title={t('newProject')}>
-            <Plus className="h-4 w-4" />
-          </Button>
-        </div>
-      </div>
-      <div className="flex-1 overflow-y-auto">
-        {loading ? (
-          <div className="px-3 py-4 text-xs text-muted-foreground">{t('loading')}</div>
-        ) : projects.length === 0 ? (
-          <div className="px-3 py-4 text-xs text-muted-foreground">{t('noProjects')}</div>
-        ) : (
-          projects.map(p => (
-            <button
-              key={p.id}
-              onClick={() => onSelect(p.id)}
-              className={`w-full text-left px-3 py-2 flex flex-col gap-0.5 hover:bg-muted/50 transition-colors border-b border-border/40 ${selectedId === p.id ? 'bg-muted' : ''}`}
-            >
-              <span className="text-sm font-medium truncate">{p.title}</span>
-              <Badge variant={(STATUS_COLORS[p.status] || 'secondary') as any} className="text-[10px] h-4 px-1 self-start">
-                {t(`status.${p.status}`, { defaultValue: p.status })}
-              </Badge>
-            </button>
-          ))
+    <div className={`${collapsed ? 'w-10' : 'w-60'} shrink-0 flex flex-col bg-muted/30 overflow-hidden transition-all duration-200`}>
+      <div className="h-16 flex items-center shrink-0 px-2 gap-1">
+        {!collapsed && (
+          <div className="flex items-center gap-2 flex-1 min-w-0 ml-1">
+            <img src="/qwen.svg" alt="Qwen" className="h-5 w-5 shrink-0" />
+            <span className="text-sm font-semibold truncate">{t('title')}</span>
+          </div>
         )}
+        <Button size="icon" variant="ghost" className="h-8 w-8 shrink-0" onClick={onToggle}>
+          {collapsed ? <PanelLeftOpen className="h-4 w-4" /> : <PanelLeftClose className="h-4 w-4" />}
+        </Button>
       </div>
+      {!collapsed && (
+        <>
+          <div className="flex items-center justify-end px-2 pb-1 gap-0.5 shrink-0">
+            <Button size="icon" variant="ghost" className="h-7 w-7" onClick={onLLM} title={t('llmConfig')}>
+              <Settings2 className="h-4 w-4" />
+            </Button>
+            <Button size="icon" variant="ghost" className="h-7 w-7" onClick={onNew} title={t('newProject')}>
+              <Plus className="h-4 w-4" />
+            </Button>
+          </div>
+          <div className="flex-1 overflow-y-auto">
+            {loading ? (
+              <div className="px-3 py-4 text-xs text-muted-foreground">{t('loading')}</div>
+            ) : projects.length === 0 ? (
+              <div className="px-3 py-4 text-xs text-muted-foreground">{t('noProjects')}</div>
+            ) : (
+              projects.map(p => (
+                <button
+                  key={p.id}
+                  onClick={() => onSelect(p.id)}
+                  className={`w-full text-left px-3 py-2 flex flex-col gap-0.5 hover:bg-muted/50 transition-colors border-b border-border/40 ${selectedId === p.id ? 'bg-muted' : ''}`}
+                >
+                  <span className="text-sm font-medium truncate">{p.title}</span>
+                  <Badge variant={(STATUS_COLORS[p.status] || 'secondary') as any} className="text-[10px] h-4 px-1 self-start">
+                    {t(`status.${p.status}`, { defaultValue: p.status })}
+                  </Badge>
+                </button>
+              ))
+            )}
+          </div>
+        </>
+      )}
     </div>
   )
 }
@@ -465,8 +481,8 @@ function CharactersPanel({
   const charCount = detail?.characters.length ?? 0
 
   return (
-    <div className="w-72 shrink-0 flex flex-col border-r overflow-hidden">
-      <div className="flex items-center justify-between px-3 py-2 border-b shrink-0">
+    <div className="w-72 shrink-0 flex flex-col border-r border-blue-500/20 bg-blue-500/5 overflow-hidden">
+      <div className="flex items-center justify-between px-3 py-2 border-b border-blue-500/20 shrink-0">
         <span className="text-xs font-medium text-blue-400/80">
           {t('projectCard.characters.title', { count: charCount })}
         </span>
@@ -659,8 +675,8 @@ function ChaptersPanel({
   const hasChapters = detail && detail.chapters.length > 0 && ['ready', 'generating', 'done'].includes(status)
 
   return (
-    <div className="flex-1 flex flex-col overflow-hidden">
-      <div className="flex flex-col gap-1 sm:flex-row sm:items-center sm:justify-between px-3 py-2 border-b shrink-0">
+    <div className="flex-1 flex flex-col bg-emerald-500/5 overflow-hidden">
+      <div className="flex flex-col gap-1 sm:flex-row sm:items-center sm:justify-between px-3 py-2 border-b border-emerald-500/20 shrink-0">
         <span className="text-xs font-medium text-emerald-400/80">
           {t('projectCard.chapters.title', { count: detail?.chapters.length ?? 0 })}
         </span>
@@ -818,6 +834,7 @@ export default function Audiobook() {
   const [sequentialPlayingId, setSequentialPlayingId] = useState<number | null>(null)
   const [showCreate, setShowCreate] = useState(false)
   const [showLLM, setShowLLM] = useState(false)
+  const [sidebarOpen, setSidebarOpen] = useState(true)
   const prevStatusRef = useRef<string>('')
   const autoExpandedRef = useRef(new Set<string>())
 
@@ -1145,24 +1162,26 @@ export default function Audiobook() {
   const isTurboMode = ['analyzing', 'parsing', 'processing'].includes(displayStatus)
 
   return (
-    <div className="h-screen flex flex-col overflow-hidden">
-      <Navbar />
-      <div className="flex-1 flex overflow-hidden">
-        <ProjectListSidebar
-          projects={projects}
-          selectedId={selectedProjectId}
-          onSelect={(id) => {
-            if (id !== selectedProjectId) {
-              setSelectedProjectId(id)
-              setIsPolling(false)
-              setGeneratingChapterIndices(new Set())
-            }
-          }}
-          onNew={() => { setShowCreate(v => !v); setShowLLM(false) }}
-          onLLM={() => { setShowLLM(v => !v); setShowCreate(false) }}
-          loading={loading}
-        />
-        <div className="flex-1 flex flex-col overflow-hidden">
+    <div className="h-screen overflow-hidden flex bg-background">
+      <ProjectListSidebar
+        projects={projects}
+        selectedId={selectedProjectId}
+        onSelect={(id) => {
+          if (id !== selectedProjectId) {
+            setSelectedProjectId(id)
+            setIsPolling(false)
+            setGeneratingChapterIndices(new Set())
+          }
+        }}
+        onNew={() => { setShowCreate(v => !v); setShowLLM(false) }}
+        onLLM={() => { setShowLLM(v => !v); setShowCreate(false) }}
+        loading={loading}
+        collapsed={!sidebarOpen}
+        onToggle={() => setSidebarOpen(v => !v)}
+      />
+      <div className="flex-1 flex flex-col overflow-hidden bg-muted/30">
+        <Navbar />
+        <div className="flex-1 flex flex-col overflow-hidden bg-background rounded-tl-2xl">
           {showLLM && (
             <div className="shrink-0 border-b px-4 py-3">
               <LLMConfigPanel onSaved={() => setShowLLM(false)} />