diff --git a/web2/src/components/common/PageLayout.tsx b/web2/src/components/common/PageLayout.tsx
index 9a2a632..74c6c8f 100644
--- a/web2/src/components/common/PageLayout.tsx
+++ b/web2/src/components/common/PageLayout.tsx
@@ -11,9 +11,9 @@ interface PageLayoutProps {
 
 export function PageLayout({ title, description, actions, children, className }: PageLayoutProps) {
   return (
-    <div className={cn('space-y-6', className)}>
-      <div className="flex items-start justify-between gap-4">
-        <div>
+    <div className={cn('space-y-4 md:space-y-6', className)}>
+      <div className="flex flex-col gap-3 sm:flex-row sm:items-start sm:justify-between sm:gap-4">
+        <div className="min-w-0">
           <h2 className="text-xl font-bold text-foreground md:text-2xl">{title}</h2>
           {description && <p className="mt-1 text-sm text-muted-foreground">{description}</p>}
         </div>
diff --git a/web2/src/pages/ChatHistory.tsx b/web2/src/pages/ChatHistory.tsx
index 5cb3dcd..c67bb43 100644
--- a/web2/src/pages/ChatHistory.tsx
+++ b/web2/src/pages/ChatHistory.tsx
@@ -183,8 +183,8 @@ export function ChatHistory() {
         actions={
           <div className="flex items-center gap-2">
             <Button variant="outline" size="sm" onClick={handleBack}>
-              <ArrowLeft className="mr-1 h-4 w-4" />
-              返回列表
+              <ArrowLeft className="h-4 w-4 sm:mr-1" />
+              <span className="hidden sm:inline">返回列表</span>
             </Button>
             <Button
               variant="outline"
@@ -192,19 +192,19 @@ export function ChatHistory() {
               className="text-destructive hover:text-destructive"
               onClick={() => setDeleteTarget(currentSession)}
             >
-              <Trash2 className="mr-1 h-4 w-4" />
-              删除
+              <Trash2 className="h-4 w-4 sm:mr-1" />
+              <span className="hidden sm:inline">删除</span>
             </Button>
           </div>
         }
       >
         <Card>
           <CardContent className="p-4">
-            <div className="mb-4 flex items-center gap-3 border-b pb-3">
-              <modeCfg.icon className="h-5 w-5 text-muted-foreground" />
-              <div className="flex-1">
-                <p className="font-medium">{currentSession.title || '未命名对话'}</p>
-                <div className="mt-0.5 flex flex-wrap items-center gap-2">
+            <div className="mb-4 flex items-center gap-2 border-b pb-3 sm:gap-3">
+              <modeCfg.icon className="h-4 w-4 shrink-0 text-muted-foreground sm:h-5 sm:w-5" />
+              <div className="min-w-0 flex-1">
+                <p className="truncate font-medium">{currentSession.title || '未命名对话'}</p>
+                <div className="mt-0.5 flex flex-wrap items-center gap-x-2 gap-y-1">
                   <span className="text-xs text-muted-foreground">{modeCfg.label}</span>
                   {currentSession.scene && (
                     <Badge variant="secondary" className="text-xs">
@@ -212,8 +212,7 @@ export function ChatHistory() {
                     </Badge>
                   )}
                   <span className="text-xs text-muted-foreground">
-                    {formatTime(currentSession.first_message_at)} ~ {formatTime(currentSession.last_message_at)}
-                    {' · '}{currentSession.message_count} 条消息
+                    {currentSession.message_count} 条 · {formatTime(currentSession.last_message_at)}
                   </span>
                 </div>
               </div>
@@ -291,13 +290,13 @@ export function ChatHistory() {
       title="对话历史"
       description="普通模式可直接查看,保密模式需密码验证,阅后即焚不落库"
       actions={
-        <div className="flex flex-wrap items-center gap-1 rounded-md border bg-card p-1">
+        <div className="flex items-center gap-1 self-start rounded-md border bg-card p-1 sm:self-auto">
           {(['all', 'normal', 'confidential'] as const).map((m) => (
             <Button
               key={m}
               variant={modeFilter === m ? 'default' : 'ghost'}
               size="sm"
-              className="h-7 text-xs"
+              className="h-7 px-2.5 text-xs"
               onClick={() => setModeFilter(m)}
             >
               {m === 'all' ? '全部' : m === 'normal' ? '普通' : '保密'}
@@ -354,13 +353,13 @@ export function ChatHistory() {
                         className="cursor-pointer transition-colors hover:bg-accent/50"
                         onClick={() => handleView(session)}
                       >
-                        <CardContent className="flex items-center gap-3 p-4">
-                          <div className={cn('flex h-10 w-10 items-center justify-center rounded-lg', modeCfg.color)}>
-                            <modeCfg.icon className="h-5 w-5" />
+                        <CardContent className="flex items-center gap-2 p-3 sm:gap-3 sm:p-4">
+                          <div className={cn('flex h-9 w-9 shrink-0 items-center justify-center rounded-lg sm:h-10 sm:w-10', modeCfg.color)}>
+                            <modeCfg.icon className="h-4 w-4 sm:h-5 sm:w-5" />
                           </div>
                           <div className="min-w-0 flex-1">
                             <p className="truncate text-sm font-medium">{session.title || '未命名对话'}</p>
-                            <div className="mt-0.5 flex flex-wrap items-center gap-2">
+                            <div className="mt-0.5 flex flex-wrap items-center gap-x-2 gap-y-0.5">
                               <span className="text-xs text-muted-foreground">{modeCfg.label}</span>
                               <span className="text-xs text-muted-foreground">
                                 {session.message_count} 条 · {formatTime(session.last_message_at)}
@@ -374,7 +373,7 @@ export function ChatHistory() {
                           >
                             <Trash2 className="h-4 w-4" />
                           </button>
-                          <ChevronRight className="h-4 w-4 shrink-0 text-muted-foreground" />
+                          <ChevronRight className="hidden h-4 w-4 shrink-0 text-muted-foreground sm:block" />
                         </CardContent>
                       </Card>
                     )
@@ -402,7 +401,7 @@ function MessageBubble({ message }: { message: HistoryMessage }) {
   const riskLevel = message.risk?.level
   return (
     <div className={cn('flex', isUser ? 'justify-end' : 'justify-start')}>
-      <div className={cn('max-w-[80%] rounded-lg p-3', isUser ? 'bg-primary text-primary-foreground' : 'bg-muted')}>
+      <div className={cn('max-w-[92%] rounded-lg p-3 sm:max-w-[80%]', isUser ? 'bg-primary text-primary-foreground' : 'bg-muted')}>
         {/* 消息正文:用户消息纯文本,AI 消息 Markdown 渲染 */}
         {isUser ? (
           <p className="whitespace-pre-wrap text-sm">{message.content}</p>
@@ -440,7 +439,7 @@ function MessageBubble({ message }: { message: HistoryMessage }) {
         {!isUser && (
           <div className="mt-2 border-t border-border/30 pt-2">
             <div className="mb-1 flex items-center gap-1 text-[10px] text-muted-foreground">
-              <BookOpen className="h-3 w-3" /> 参考来源
+              <BookOpen className="h-3 w-3 shrink-0" /> 参考来源
             </div>
             {message.meta?.rag_context && message.meta.rag_context.length > 0 ? (
               <div className="space-y-1">