diff --git a/frontend/src/App.tsx b/frontend/src/App.tsx
index b8a51be..a8aa2f2 100644
--- a/frontend/src/App.tsx
+++ b/frontend/src/App.tsx
@@ -28,7 +28,6 @@ function App() {
 
   const { loadSessions } = useChatStore();
 
-  // Initialize theme on mount
   useEffect(() => {
     applyTheme();
     const mediaQuery = window.matchMedia('(prefers-color-scheme: dark)');
@@ -37,14 +36,12 @@ function App() {
     return () => mediaQuery.removeEventListener('change', handler);
   }, [applyTheme]);
 
-  // Sync persisted locale to i18next on mount
   useEffect(() => {
     if (locale && i18n.language !== locale) {
       i18n.changeLanguage(locale);
     }
   }, [locale]);
 
-  // Check auth and load sessions
   useEffect(() => {
     const token = localStorage.getItem('token');
     if (token) {
@@ -75,11 +72,9 @@ function App() {
 
             <div className="flex-1 flex overflow-hidden">
               {mode === 'work' && workTab === 'chat' && (
-                <div className="flex-1 p-4 flex overflow-hidden gap-4">
-                  <div className="flex-1 flex bg-bg-card rounded-2xl shadow-sm border border-border-primary overflow-hidden relative">
-                    <LeftPanel activeTab="chats" />
-                    <ChatPanel />
-                  </div>
+                <div className="flex-1 flex overflow-hidden">
+                  <LeftPanel activeTab="chats" />
+                  <ChatPanel />
                 </div>
               )}
 
@@ -101,22 +96,22 @@ function WorkflowShell() {
 
   if (selectedWorkflow === 'new') {
     return (
-      <>
+      <div className="flex-1 flex overflow-hidden">
         <LeftPanel activeTab="workflows" />
         <NewWorkflowDialog
           onClose={() => setSelectedWorkflow(null)}
           onSuccess={(traceId: string) => setSelectedWorkflow(traceId)}
         />
-      </>
+      </div>
     );
   }
 
   if (selectedWorkflow) {
     return (
-      <>
+      <div className="flex-1 flex overflow-hidden">
         <LeftPanel activeTab="workflows" />
         <RightPanel selectedWorkflow={selectedWorkflow} />
-      </>
+      </div>
     );
   }
 
diff --git a/frontend/src/components/Auth/AuthPage.tsx b/frontend/src/components/Auth/AuthPage.tsx
index d063674..a23c0fc 100644
--- a/frontend/src/components/Auth/AuthPage.tsx
+++ b/frontend/src/components/Auth/AuthPage.tsx
@@ -1,7 +1,7 @@
 import { useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import apiClient from '../../api/client';
-import { Zap, ArrowRight, ShieldCheck } from 'lucide-react';
+import { ArrowRight } from 'lucide-react';
 
 interface AuthPageProps {
   onLoginSuccess: () => void;
@@ -49,96 +49,109 @@ export function AuthPage({ onLoginSuccess }: AuthPageProps) {
   };
 
   return (
-    <div className="flex min-h-screen w-full relative overflow-hidden">
-      {/* Background decoration */}
-      <div className="absolute inset-0 bg-bg-primary">
-        <div className="absolute top-0 left-1/4 w-96 h-96 bg-accent/5 rounded-full blur-3xl" />
-        <div className="absolute bottom-0 right-1/4 w-96 h-96 bg-glow-purple/5 rounded-full blur-3xl" />
-      </div>
-
-      <div className="relative z-10 flex w-full items-center justify-center p-6">
-        <div className="w-full max-w-md animate-fade-in-scale">
-          {/* Logo */}
-          <div className="flex flex-col items-center mb-8">
-            <div className="w-14 h-14 rounded-2xl bg-gradient-to-br from-accent to-glow-purple flex items-center justify-center text-white shadow-xl shadow-accent/20 mb-5">
-              <Zap size={28} fill="currentColor" />
-            </div>
-            <h1 className="text-2xl font-bold text-text-primary tracking-tight">{t('app.name')}</h1>
-            <p className="text-sm text-text-muted mt-1.5">{t('app.tagline')}</p>
-          </div>
-
-          <div className="bg-bg-card/80 backdrop-blur-xl rounded-2xl border border-border-primary shadow-xl shadow-black/5 p-8">
-            <div className="flex items-center gap-2 mb-6">
-              <ShieldCheck size={18} className="text-accent" />
-              <h2 className="text-lg font-semibold text-text-primary">
-                {isLogin ? t('auth.welcomeBack') : t('auth.createAccount')}
-              </h2>
-            </div>
-
-            {error && (
-              <div className={`mb-5 p-3 rounded-xl text-sm border ${error.includes('success') || error.includes('成功') ? 'bg-success-bg/50 text-success border-success/20' : 'bg-danger-bg/50 text-danger border-danger/20'}`}>
-                {error}
-              </div>
-            )}
-
-            <form onSubmit={handleSubmit} className="space-y-4">
-              <div>
-                <label className="block text-xs font-semibold text-text-secondary mb-1.5 uppercase tracking-wider">{t('auth.username')}</label>
-                <input
-                  type="text"
-                  value={userName}
-                  onChange={(e) => setUserName(e.target.value)}
-                  className="w-full px-4 py-2.5 bg-bg-input border border-border-primary rounded-xl focus:outline-none focus:ring-2 focus:ring-accent/20 focus:border-accent transition-all text-text-primary placeholder:text-text-muted/60 text-sm"
-                  placeholder={t('auth.usernamePlaceholder')}
-                  required
-                />
-              </div>
-
-              <div>
-                <label className="block text-xs font-semibold text-text-secondary mb-1.5 uppercase tracking-wider">{t('auth.password')}</label>
-                <input
-                  type="password"
-                  value={password}
-                  onChange={(e) => setPassword(e.target.value)}
-                  className="w-full px-4 py-2.5 bg-bg-input border border-border-primary rounded-xl focus:outline-none focus:ring-2 focus:ring-accent/20 focus:border-accent transition-all text-text-primary placeholder:text-text-muted/60 text-sm"
-                  placeholder={t('auth.passwordPlaceholder')}
-                  required
-                />
-              </div>
-
-              <button
-                type="submit"
-                disabled={loading}
-                className="w-full py-2.5 bg-accent text-white rounded-xl font-semibold hover:bg-accent-hover focus:outline-none focus:ring-2 focus:ring-accent/30 transition-all disabled:opacity-50 cursor-pointer text-sm flex items-center justify-center gap-2 group"
-              >
-                {loading ? (
-                  <span className="flex items-center gap-2">
-                    <span className="w-4 h-4 border-2 border-white/30 border-t-white rounded-full animate-spin" />
-                    {t('auth.processing')}
-                  </span>
-                ) : (
-                  <>
-                    {isLogin ? t('auth.signIn') : t('auth.signUp')}
-                    <ArrowRight size={16} className="transition-transform group-hover:translate-x-0.5" />
-                  </>
-                )}
-              </button>
-            </form>
-
-            <div className="mt-6 text-center text-sm text-text-muted">
-              {isLogin ? t('auth.noAccount') : t('auth.hasAccount')}{' '}
-              <button
-                onClick={() => { setIsLogin(!isLogin); setError(''); }}
-                className="text-accent font-semibold hover:text-accent-hover transition-colors"
-              >
-                {isLogin ? t('auth.signUp') : t('auth.signIn')}
-              </button>
-            </div>
-          </div>
-
-          <p className="text-center text-xs text-text-muted/60 mt-6">
+    <div className="min-h-screen w-full bg-bg-primary flex items-center justify-center">
+      <div className="flex items-center gap-[70px] w-[900px]">
+        {/* Left: Brand */}
+        <div className="flex-1">
+          <div className="w-10 h-[3px] rounded-sm bg-gradient-to-r from-accent to-clay mb-6" />
+          <h1 className="text-[40px] font-bold tracking-tight leading-tight mb-3 text-text-primary">
+            Kilo<span className="not-italic text-accent">Star</span>
+          </h1>
+          <p className="text-[15px] text-text-muted leading-relaxed mb-8">
             {t('app.tagline')}
           </p>
+          <div className="flex flex-col gap-2.5">
+            <div className="flex items-center gap-2.5 text-[13px] text-text-muted">
+              <div className="w-[5px] h-[5px] rounded-full bg-clay" />
+              <span>Multi-Agent Orchestration</span>
+            </div>
+            <div className="flex items-center gap-2.5 text-[13px] text-text-muted">
+              <div className="w-[5px] h-[5px] rounded-full bg-clay" />
+              <span>Visual Pipeline Builder</span>
+            </div>
+            <div className="flex items-center gap-2.5 text-[13px] text-text-muted">
+              <div className="w-[5px] h-[5px] rounded-full bg-clay" />
+              <span>Intelligent Monitoring</span>
+            </div>
+          </div>
+        </div>
+
+        {/* Right: Card */}
+        <div className="w-[380px] bg-bg-card rounded-[20px] p-10 shadow-[0_1px_3px_rgba(0,0,0,0.04),0_8px_24px_rgba(0,0,0,0.03)] border border-border-primary">
+          <h2 className="text-xl font-semibold text-text-primary mb-1">
+            {isLogin ? t('auth.welcomeBack') : t('auth.createAccount')}
+          </h2>
+          <p className="text-[13px] text-text-muted mb-7">
+            {isLogin ? t('auth.enterCredentials') : t('auth.signUpToStart')}
+          </p>
+
+          {error && (
+            <div className={`mb-5 p-3 rounded-[10px] text-sm border ${error.includes('success') || error.includes('成功') ? 'bg-success-bg/50 text-success border-success/20' : 'bg-danger-bg/50 text-danger border-danger/20'}`}>
+              {error}
+            </div>
+          )}
+
+          <form onSubmit={handleSubmit} className="space-y-[18px]">
+            <div>
+              <label className="block text-xs font-medium text-text-muted mb-1.5">
+                {t('auth.username')}
+              </label>
+              <input
+                type="text"
+                value={userName}
+                onChange={(e) => setUserName(e.target.value)}
+                className="w-full px-3.5 py-3 rounded-[10px] border border-border-primary bg-bg-primary text-sm text-text-primary placeholder:text-[#bbb5ae] outline-none transition-all focus:border-accent focus:shadow-[0_0_0_3px_rgba(156,175,136,0.1)]"
+                placeholder={t('auth.usernamePlaceholder')}
+                required
+              />
+            </div>
+
+            <div>
+              <label className="block text-xs font-medium text-text-muted mb-1.5">
+                {t('auth.password')}
+              </label>
+              <input
+                type="password"
+                value={password}
+                onChange={(e) => setPassword(e.target.value)}
+                className="w-full px-3.5 py-3 rounded-[10px] border border-border-primary bg-bg-primary text-sm text-text-primary placeholder:text-[#bbb5ae] outline-none transition-all focus:border-accent focus:shadow-[0_0_0_3px_rgba(156,175,136,0.1)]"
+                placeholder={t('auth.passwordPlaceholder')}
+                required
+              />
+            </div>
+
+            <button
+              type="submit"
+              disabled={loading}
+              className="w-full py-3 rounded-[10px] bg-accent text-white text-sm font-semibold hover:bg-accent-hover hover:-translate-y-px hover:shadow-[0_6px_20px_rgba(156,175,136,0.3)] transition-all disabled:opacity-50 cursor-pointer flex items-center justify-center gap-2"
+            >
+              {loading ? (
+                <span className="flex items-center gap-2">
+                  <span className="w-4 h-4 border-2 border-white/30 border-t-white rounded-full animate-spin" />
+                  {t('auth.processing')}
+                </span>
+              ) : (
+                <>
+                  {isLogin ? t('auth.signIn') : t('auth.signUp')}
+                  <ArrowRight size={16} />
+                </>
+              )}
+            </button>
+          </form>
+
+          <div className="flex items-center gap-3.5 my-5 text-[#bbb5ae] text-xs before:flex-1 before:h-px before:bg-border-primary after:flex-1 after:h-px after:bg-border-primary">
+            or
+          </div>
+
+          <p className="text-center text-[13px] text-text-muted">
+            {isLogin ? t('auth.noAccount') : t('auth.hasAccount')}{' '}
+            <button
+              onClick={() => { setIsLogin(!isLogin); setError(''); }}
+              className="text-accent font-medium hover:text-accent-hover transition-colors"
+            >
+              {isLogin ? t('auth.signUp') : t('auth.signIn')}
+            </button>
+          </p>
         </div>
       </div>
     </div>
diff --git a/frontend/src/components/Chat/ChatPanel.tsx b/frontend/src/components/Chat/ChatPanel.tsx
index 14787ad..3069dc6 100644
--- a/frontend/src/components/Chat/ChatPanel.tsx
+++ b/frontend/src/components/Chat/ChatPanel.tsx
@@ -1,6 +1,6 @@
 import { useState, useEffect, useRef } from 'react';
 import { useTranslation } from 'react-i18next';
-import { MessageSquare, Activity, ArrowUp, Plus, Sparkles, Code, FileText, Search } from 'lucide-react';
+import { MessageSquare, Activity, ArrowUp, Plus, Sparkles, Code, FileText, Search, User } from 'lucide-react';
 import { useChatStore } from '../../store/useChatStore';
 
 export function ChatPanel() {
@@ -64,36 +64,32 @@ export function ChatPanel() {
 
   if (!activeSessionId) {
     return (
-      <div className="flex-1 flex flex-col items-center justify-center p-8 relative overflow-hidden">
-        {/* Decorative background */}
-        <div className="absolute top-1/3 left-1/2 -translate-x-1/2 -translate-y-1/2 w-64 h-64 bg-accent/5 rounded-full blur-3xl" />
-
+      <div className="flex-1 flex flex-col items-center justify-center p-10 relative overflow-hidden">
         <div className="relative z-10 flex flex-col items-center animate-fade-in-scale">
-          <div className="w-16 h-16 rounded-2xl bg-gradient-to-br from-accent to-glow-purple flex items-center justify-center text-white shadow-xl shadow-accent/20 mb-6">
-            <Activity size={32} />
+          <div className="w-14 h-14 rounded-2xl bg-accent-light flex items-center justify-center text-accent mb-5">
+            <Activity size={24} />
           </div>
-          <h2 className="text-2xl font-bold text-text-primary mb-2">{t('chat.assistantName')}</h2>
-          <p className="text-text-muted text-sm mb-8 text-center max-w-sm">
+          <h2 className="text-lg font-semibold text-text-primary mb-1.5">{t('chat.assistantName')}</h2>
+          <p className="text-text-secondary text-sm mb-7 text-center max-w-sm">
             {t('chat.selectChat')}
           </p>
 
-          {/* Quick Actions */}
-          <div className="grid grid-cols-2 gap-3 mb-8 w-full max-w-md">
+          <div className="grid grid-cols-2 gap-2.5 mb-7 w-full max-w-[380px]">
             {quickActions.map((action) => (
               <button
                 key={action.label}
                 onClick={() => handleQuickAction(action.prompt)}
-                className="flex items-center gap-2.5 px-4 py-3 bg-bg-card border border-border-primary rounded-xl text-left hover:border-accent hover:bg-bg-hover transition-all group"
+                className="flex items-center gap-2.5 px-3.5 py-3 bg-bg-card border border-border-primary rounded-[10px] text-left hover:border-border-secondary hover:bg-bg-hover transition-all group shadow-[0_1px_2px_rgba(0,0,0,0.02)]"
               >
-                <action.icon size={16} className="text-text-muted group-hover:text-accent transition-colors" />
-                <span className="text-sm text-text-secondary group-hover:text-text-primary transition-colors">{action.label}</span>
+                <action.icon size={14} className="text-accent flex-shrink-0" />
+                <span className="text-xs text-text-secondary group-hover:text-text-primary transition-colors">{action.label}</span>
               </button>
             ))}
           </div>
 
           <button
             onClick={handleNewChat}
-            className="px-6 py-2.5 bg-accent text-white rounded-xl font-medium hover:bg-accent-hover transition-all shadow-lg shadow-accent/20 text-sm flex items-center gap-2"
+            className="px-5 py-2.5 bg-accent text-white rounded-xl font-medium hover:bg-accent-hover transition-all text-sm flex items-center gap-2"
           >
             <Plus size={16} />
             {t('chat.newChat')}
@@ -104,19 +100,17 @@ export function ChatPanel() {
   }
 
   return (
-    <div className="flex-1 flex flex-col bg-bg-card overflow-hidden relative">
+    <div className="flex-1 flex flex-col bg-bg-primary overflow-hidden relative">
       {/* Header */}
-      <div className="h-12 border-b border-border-primary/60 bg-bg-card/80 backdrop-blur flex items-center justify-between px-5 z-10 shrink-0">
-        <div className="flex items-center gap-2.5">
-          <div className="w-7 h-7 rounded-lg bg-accent-light flex items-center justify-center">
-            <MessageSquare size={14} className="text-accent" />
-          </div>
-          <h1 className="font-semibold text-sm text-text-primary">{activeSession?.title || t('chat.defaultTitle')}</h1>
+      <div className="h-12 border-b border-border-primary flex items-center px-6 gap-2.5 bg-bg-primary/60 backdrop-blur-[8px] shrink-0">
+        <div className="w-[26px] h-[26px] rounded-[7px] flex items-center justify-center bg-accent-light">
+          <MessageSquare size={12} className="text-accent" />
         </div>
+        <span className="text-[13px] font-semibold text-text-primary">{activeSession?.title || t('chat.defaultTitle')}</span>
       </div>
 
       {/* Messages */}
-      <div className="flex-1 overflow-y-auto px-4 py-6 space-y-5">
+      <div className="flex-1 overflow-y-auto px-8 py-6 flex flex-col gap-4.5">
         {loadingMessages ? (
           <div className="flex justify-center items-center h-full">
             <div className="flex items-center gap-1.5">
@@ -129,24 +123,29 @@ export function ChatPanel() {
           messages.map((msg, idx) => (
             <div
               key={msg.id}
-              className={`flex ${msg.role === 'user' ? 'justify-end' : 'justify-start'} animate-fade-in`}
+              className={`flex gap-2.5 max-w-[78%] ${msg.role === 'user' ? 'self-end flex-row-reverse' : ''} animate-fade-in`}
               style={{ animationDelay: `${idx * 30}ms` }}
             >
-              {msg.role === 'assistant' && (
-                <div className="w-7 h-7 rounded-full bg-gradient-to-br from-accent to-glow-purple flex items-center justify-center mr-2.5 mt-0.5 shadow-sm flex-shrink-0">
-                  <Activity size={13} className="text-white" />
-                </div>
-              )}
-              <div className={`max-w-[85%] ${msg.role === 'user' ? 'mr-1' : ''}`}>
-                <div
-                  className={`px-4 py-2.5 text-sm leading-relaxed whitespace-pre-wrap ${
-                    msg.role === 'user'
-                      ? 'bg-text-primary text-bg-primary rounded-2xl rounded-tr-sm'
-                      : 'bg-bg-secondary border border-border-primary rounded-2xl rounded-tl-sm'
-                  }`}
-                >
-                  {msg.content}
-                </div>
+              <div
+                className="w-7 h-7 rounded-full flex items-center justify-center flex-shrink-0"
+                style={{
+                  background: msg.role === 'assistant'
+                    ? 'var(--accent)'
+                    : 'linear-gradient(135deg, #6b6860, #8a8578)',
+                }}
+              >
+                {msg.role === 'assistant' ? (
+                  <Activity size={12} className="text-white" />
+                ) : (
+                  <User size={12} className="text-white" />
+                )}
+              </div>
+              <div className={`px-4 py-3 text-[13px] leading-[1.7] whitespace-pre-wrap ${
+                msg.role === 'user'
+                  ? 'bg-text-primary text-white rounded-[14px] rounded-br-[3px]'
+                  : 'bg-bg-card border border-border-primary rounded-[14px] rounded-bl-[3px] shadow-[0_1px_3px_rgba(0,0,0,0.02)]'
+              }`}>
+                {msg.content}
               </div>
             </div>
           ))
@@ -154,11 +153,11 @@ export function ChatPanel() {
 
         {/* Typing indicator */}
         {activeSession && activeSession.messages.length > 0 && activeSession.messages[activeSession.messages.length - 1].role === 'user' && (
-          <div className="flex justify-start animate-fade-in">
-            <div className="w-7 h-7 rounded-full bg-gradient-to-br from-accent to-glow-purple flex items-center justify-center mr-2.5 mt-0.5 shadow-sm flex-shrink-0">
-              <Activity size={13} className="text-white animate-pulse" />
+          <div className="flex gap-2.5 max-w-[78%] animate-fade-in">
+            <div className="w-7 h-7 rounded-full bg-accent flex items-center justify-center flex-shrink-0">
+              <Activity size={12} className="text-white animate-pulse" />
             </div>
-            <div className="bg-bg-secondary border border-border-primary rounded-2xl rounded-tl-sm px-4 py-3">
+            <div className="bg-bg-card border border-border-primary rounded-[14px] rounded-bl-[3px] px-4 py-3 shadow-[0_1px_3px_rgba(0,0,0,0.02)]">
               <div className="flex items-center gap-1">
                 <span className="w-1.5 h-1.5 rounded-full bg-accent animate-typing-dot" />
                 <span className="w-1.5 h-1.5 rounded-full bg-accent animate-typing-dot" />
@@ -171,12 +170,12 @@ export function ChatPanel() {
       </div>
 
       {/* Input */}
-      <div className="p-4 bg-bg-card border-t border-border-primary/60 shrink-0">
-        <div className="relative flex items-end gap-2 max-w-3xl mx-auto">
+      <div className="px-6 pt-3.5 pb-4.5 border-t border-border-primary bg-bg-primary/60 backdrop-blur-[8px] shrink-0">
+        <div className="flex items-end gap-2 max-w-[720px] mx-auto">
           <input type="file" ref={fileInputRef} className="hidden" />
           <button
             onClick={() => fileInputRef.current?.click()}
-            className="p-2.5 text-text-muted hover:text-accent hover:bg-accent-light rounded-xl transition-all flex-shrink-0 mb-0.5"
+            className="w-10 h-10 rounded-xl text-text-muted hover:text-accent hover:bg-bg-hover transition-all flex items-center justify-center flex-shrink-0"
             title={t('chat.addAttachment')}
           >
             <Plus size={18} />
@@ -193,19 +192,19 @@ export function ChatPanel() {
               }}
               placeholder={t('chat.placeholder')}
               rows={1}
-              className="w-full bg-bg-input border border-border-primary rounded-xl pl-4 pr-12 py-3 focus:outline-none focus:ring-2 focus:ring-accent/15 focus:border-accent/40 transition-all text-text-primary placeholder:text-text-muted/50 text-sm resize-none min-h-[44px] max-h-[120px]"
+              className="w-full bg-bg-card border border-border-primary rounded-xl pl-4 pr-4 py-3 focus:outline-none focus:border-accent focus:shadow-[0_0_0_3px_var(--accent-light),0_1px_3px_rgba(0,0,0,0.02)] transition-all text-text-primary placeholder:text-[#bbb5ae] text-[13px] resize-none min-h-[44px] max-h-[100px]"
               style={{ height: 'auto' }}
             />
           </div>
           <button
             onClick={handleSendMessage}
             disabled={!input.trim()}
-            className="p-2.5 bg-accent text-white rounded-xl hover:bg-accent-hover transition-all shadow-lg shadow-accent/15 disabled:opacity-30 disabled:shadow-none disabled:hover:bg-accent flex-shrink-0 mb-0.5"
+            className="w-10 h-10 rounded-[10px] bg-accent text-white hover:bg-accent-hover hover:-translate-y-px hover:shadow-[0_4px_12px_rgba(156,175,136,0.25)] transition-all disabled:opacity-30 flex items-center justify-center flex-shrink-0"
           >
-            <ArrowUp size={18} />
+            <ArrowUp size={16} />
           </button>
         </div>
-        <p className="text-center text-[10px] text-text-muted/50 mt-2">
+        <p className="text-center text-[10px] text-text-muted mt-2">
           {t('chat.mistakeWarning')}
         </p>
       </div>
diff --git a/frontend/src/components/Chat/LeftPanel.tsx b/frontend/src/components/Chat/LeftPanel.tsx
index b745782..4235f51 100644
--- a/frontend/src/components/Chat/LeftPanel.tsx
+++ b/frontend/src/components/Chat/LeftPanel.tsx
@@ -69,9 +69,9 @@ export function LeftPanel({ activeTab }: LeftPanelProps) {
   const isChats = activeTab === 'chats';
 
   return (
-    <div className="w-64 bg-bg-sidebar border-r border-border-primary flex flex-col shrink-0">
-      <div className="flex items-center justify-between px-4 py-3 border-b border-border-primary">
-        <span className="text-[11px] font-bold text-text-muted uppercase tracking-widest">
+    <div className="w-[260px] bg-bg-sidebar border-r border-border-primary flex flex-col shrink-0">
+      <div className="flex items-center justify-between px-4 py-4">
+        <span className="text-[11px] font-semibold text-text-muted uppercase tracking-[1.5px]">
           {isChats ? t('chat.chatHistory') : t('nav.workflow')}
         </span>
         <button
@@ -79,47 +79,49 @@ export function LeftPanel({ activeTab }: LeftPanelProps) {
             if (isChats) handleNewChat();
             else setSelectedWorkflow('new');
           }}
-          className="p-1.5 rounded-lg bg-bg-hover text-text-muted hover:text-accent hover:bg-accent-light transition-all"
+          className="w-[26px] h-[26px] rounded-md bg-bg-card text-text-secondary hover:bg-accent hover:text-white transition-all flex items-center justify-center shadow-[0_1px_2px_rgba(0,0,0,0.04)]"
           title={isChats ? t('chat.newChat') : t('workflow.createWorkflow')}
         >
-          <Plus size={14} />
+          <Plus size={12} />
         </button>
       </div>
 
-      <div className="flex-1 overflow-y-auto py-2 px-2 space-y-0.5">
+      <div className="flex-1 overflow-y-auto px-2 pb-2">
         {isChats ? (
           sessions.length === 0 ? (
             <div className="px-3 py-8 text-center text-text-muted text-xs">
               {t('chat.noHistory')}
             </div>
           ) : (
-            sessions.map((session) => (
-              <div
-                key={session.id}
-                onClick={() => setActiveSessionId(session.id)}
-                className={`group flex items-center gap-2.5 px-3 py-2.5 rounded-lg cursor-pointer transition-all ${
-                  activeSessionId === session.id
-                    ? 'bg-accent-light text-accent'
-                    : 'hover:bg-bg-hover text-text-secondary'
-                }`}
-              >
-                <MessageSquare size={14} className={`flex-shrink-0 ${activeSessionId === session.id ? 'text-accent' : 'text-text-muted'}`} />
-                <div className="flex-1 min-w-0">
-                  <h3 className={`text-xs font-medium truncate ${activeSessionId === session.id ? 'text-accent' : 'text-text-secondary'}`}>
-                    {session.title}
-                  </h3>
-                  <p className="text-[10px] text-text-muted mt-0.5">
-                    {new Date(session.updatedAt).toLocaleDateString()}
-                  </p>
-                </div>
-                <button
-                  onClick={(e) => handleDeleteChat(e, session.id)}
-                  className="opacity-0 group-hover:opacity-100 p-1 rounded text-text-muted hover:text-danger hover:bg-danger-bg transition-all"
+            sessions.map((session) => {
+              const isActive = activeSessionId === session.id;
+              return (
+                <div
+                  key={session.id}
+                  onClick={() => setActiveSessionId(session.id)}
+                  className={`group flex items-center gap-2.5 px-2.5 py-2 rounded-lg cursor-pointer transition-all mb-px ${
+                    isActive
+                      ? 'bg-bg-card shadow-[0_1px_3px_rgba(0,0,0,0.04)]'
+                      : 'hover:bg-white/60 dark:hover:bg-white/[0.04]'
+                  }`}
                 >
-                  <Trash2 size={12} />
-                </button>
-              </div>
-            ))
+                  <div className={`w-7 h-7 rounded-[7px] flex items-center justify-center flex-shrink-0 ${isActive ? 'bg-accent-light' : 'bg-bg-primary'}`}>
+                    <MessageSquare size={12} className={isActive ? 'text-accent' : 'text-text-muted'} />
+                  </div>
+                  <div className="flex-1 min-w-0">
+                    <h3 className={`text-xs truncate ${isActive ? 'text-text-primary font-medium' : 'text-text-secondary'}`}>
+                      {session.title}
+                    </h3>
+                  </div>
+                  <button
+                    onClick={(e) => handleDeleteChat(e, session.id)}
+                    className="opacity-0 group-hover:opacity-100 p-1 rounded text-text-muted hover:text-danger transition-all"
+                  >
+                    <Trash2 size={11} />
+                  </button>
+                </div>
+              );
+            })
           )
         ) : (
           loadingWorkflows ? (
@@ -129,32 +131,29 @@ export function LeftPanel({ activeTab }: LeftPanelProps) {
               {t('workflow.noWorkflows')}
             </div>
           ) : (
-            workflows.map((wf) => (
-              <div
-                key={wf.trace_id}
-                onClick={() => setSelectedWorkflow(wf.trace_id)}
-                className={`group flex items-center gap-2.5 px-3 py-2.5 rounded-lg cursor-pointer transition-all ${
-                  selectedWorkflow === wf.trace_id
-                    ? 'bg-accent-light'
-                    : 'hover:bg-bg-hover'
-                }`}
-              >
-                <WorkflowIcon size={14} className={`flex-shrink-0 ${selectedWorkflow === wf.trace_id ? 'text-accent' : 'text-text-muted'}`} />
-                <div className="flex-1 min-w-0">
-                  <h3 className={`text-xs font-medium truncate ${selectedWorkflow === wf.trace_id ? 'text-accent' : 'text-text-secondary'}`}>
-                    {wf.title || t('common.unnamed')}
-                  </h3>
-                  <div className="flex items-center gap-1.5 mt-0.5">
-                    <span className={`w-1.5 h-1.5 rounded-full ${
-                      wf.status?.includes('working') ? 'bg-accent animate-pulse' :
-                      wf.status === 'failed' ? 'bg-danger' :
-                      wf.status === 'completed' ? 'bg-success' : 'bg-text-muted'
-                    }`} />
-                    <span className="text-[10px] text-text-muted font-mono truncate">{wf.trace_id.slice(-8)}</span>
+            workflows.map((wf) => {
+              const isActive = selectedWorkflow === wf.trace_id;
+              return (
+                <div
+                  key={wf.trace_id}
+                  onClick={() => setSelectedWorkflow(wf.trace_id)}
+                  className={`group flex items-center gap-2.5 px-2.5 py-2 rounded-lg cursor-pointer transition-all mb-px ${
+                    isActive
+                      ? 'bg-bg-card shadow-[0_1px_3px_rgba(0,0,0,0.04)]'
+                      : 'hover:bg-white/60 dark:hover:bg-white/[0.04]'
+                  }`}
+                >
+                  <div className={`w-7 h-7 rounded-[7px] flex items-center justify-center flex-shrink-0 ${isActive ? 'bg-accent-light' : 'bg-bg-primary'}`}>
+                    <WorkflowIcon size={12} className={isActive ? 'text-accent' : 'text-text-muted'} />
+                  </div>
+                  <div className="flex-1 min-w-0">
+                    <h3 className={`text-xs truncate ${isActive ? 'text-text-primary font-medium' : 'text-text-secondary'}`}>
+                      {wf.title || t('common.unnamed')}
+                    </h3>
                   </div>
                 </div>
-              </div>
-            ))
+              );
+            })
           )
         )}
       </div>
diff --git a/frontend/src/components/Chat/WorkflowListView.tsx b/frontend/src/components/Chat/WorkflowListView.tsx
index 5de13ff..4f6aaaf 100644
--- a/frontend/src/components/Chat/WorkflowListView.tsx
+++ b/frontend/src/components/Chat/WorkflowListView.tsx
@@ -2,7 +2,6 @@ import { useState, useEffect } from 'react';
 import { useTranslation } from 'react-i18next';
 import apiClient from '../../api/client';
 import type { Workflow } from '../../types';
-import { PlayCircle, CheckCircle, XCircle, Clock, ArrowRight, Zap } from 'lucide-react';
 
 interface WorkflowListViewProps {
   onSelectWorkflow: (id: string) => void;
@@ -37,11 +36,24 @@ export function WorkflowListView({ onSelectWorkflow }: WorkflowListViewProps) {
     return () => clearInterval(intervalId);
   }, []);
 
-  const getStatusMeta = (status?: string) => {
-    if (status === 'completed') return { icon: CheckCircle, color: 'text-success', bg: 'bg-success-bg', border: 'border-success/20', glow: 'group-hover:shadow-success/20' };
-    if (status === 'failed') return { icon: XCircle, color: 'text-danger', bg: 'bg-danger-bg', border: 'border-danger/20', glow: 'group-hover:shadow-danger/20' };
-    if (status && status.includes('working')) return { icon: PlayCircle, color: 'text-accent', bg: 'bg-accent-light', border: 'border-accent/20', glow: 'group-hover:shadow-accent/20' };
-    return { icon: Clock, color: 'text-text-muted', bg: 'bg-bg-secondary', border: 'border-border-primary', glow: 'group-hover:shadow-border-primary' };
+  const getStatusStyle = (status?: string) => {
+    if (status && status.includes('working')) {
+      return { label: t('workflow.status.running'), bg: 'bg-[rgba(156,175,136,0.12)]', text: 'text-[#7a8e6a]' };
+    }
+    if (status === 'completed') {
+      return { label: t('workflow.status.completed'), bg: 'bg-[rgba(196,168,130,0.12)]', text: 'text-[#9a7d5e]' };
+    }
+    if (status === 'failed') {
+      return { label: t('workflow.status.failed'), bg: 'bg-[rgba(196,145,122,0.1)]', text: 'text-[#a0705a]' };
+    }
+    return { label: t('workflow.status.waiting'), bg: 'bg-[rgba(138,154,170,0.1)]', text: 'text-[#6e7d8d]' };
+  };
+
+  const stats = {
+    total: workflows.length,
+    running: workflows.filter((w) => w.status?.includes('working')).length,
+    completed: workflows.filter((w) => w.status === 'completed').length,
+    queued: workflows.filter((w) => !w.status || (!w.status.includes('working') && w.status !== 'completed' && w.status !== 'failed')).length,
   };
 
   if (loading) {
@@ -56,80 +68,85 @@ export function WorkflowListView({ onSelectWorkflow }: WorkflowListViewProps) {
   }
 
   return (
-    <div className="flex-1 flex flex-col p-8 overflow-auto">
-      <div className="max-w-6xl mx-auto w-full">
-        <div className="flex justify-between items-end mb-8">
-          <div>
-            <div className="flex items-center gap-2 mb-1">
-              <Zap size={18} className="text-accent" />
-              <h1 className="text-2xl font-bold text-text-primary tracking-tight">{t('workflow.workflows')}</h1>
-            </div>
-            <p className="text-sm text-text-muted">{t('workflow.manageWorkflows')}</p>
-          </div>
-          <button
-            onClick={() => onSelectWorkflow('new')}
-            className="flex items-center gap-2 px-5 py-2.5 bg-accent text-white font-medium rounded-xl hover:bg-accent-hover transition-all shadow-lg shadow-accent/15 text-sm"
-          >
-            <span className="text-base leading-none">+</span>
-            {t('workflow.createWorkflow')}
-          </button>
+    <div className="flex-1 overflow-y-auto px-7 py-6">
+      {/* Header */}
+      <div className="flex justify-between items-end mb-6">
+        <div>
+          <h1 className="text-xl font-semibold text-text-primary">{t('workflow.workflows')}</h1>
+          <p className="text-[13px] text-text-muted mt-[3px]">{t('workflow.manageWorkflows')}</p>
         </div>
-
-        {workflows.length === 0 ? (
-          <div className="flex flex-col items-center justify-center border border-dashed border-border-primary rounded-2xl bg-bg-card/50 p-16 text-center">
-            <div className="w-14 h-14 bg-bg-secondary rounded-2xl flex items-center justify-center mb-4">
-              <PlayCircle size={28} className="text-text-muted" />
-            </div>
-            <h3 className="text-base font-semibold text-text-primary mb-1">{t('workflow.noWorkflows')}</h3>
-            <p className="text-sm text-text-muted max-w-xs">{t('workflow.workflowsAppearHere')}</p>
-          </div>
-        ) : (
-          <div className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-4">
-            {workflows.map((wf) => {
-              const meta = getStatusMeta(wf.status);
-              const Icon = meta.icon;
-              return (
-                <div
-                  key={wf.trace_id}
-                  onClick={() => onSelectWorkflow(wf.trace_id)}
-                  className={`group relative bg-bg-card rounded-2xl p-5 border border-border-primary card-hover cursor-pointer overflow-hidden ${meta.glow}`}
-                >
-                  {/* Status glow on hover */}
-                  <div className={`absolute top-0 right-0 w-24 h-24 ${meta.bg} rounded-full blur-2xl opacity-0 group-hover:opacity-40 transition-opacity -translate-y-1/2 translate-x-1/2`} />
-
-                  <div className="relative">
-                    <div className="flex justify-between items-start mb-4">
-                      <div className={`p-2 rounded-xl ${meta.bg} ${meta.border} border`}>
-                        <Icon size={18} className={meta.color} />
-                      </div>
-                      <ArrowRight size={16} className="text-text-muted opacity-0 group-hover:opacity-100 transition-all group-hover:translate-x-0.5" />
-                    </div>
-
-                    <h3 className="text-base font-semibold text-text-primary mb-1 line-clamp-1" title={wf.title || t('common.unnamed')}>
-                      {wf.title || t('common.unnamed')}
-                    </h3>
-
-                    {wf.command && (
-                      <p className="text-xs text-text-muted line-clamp-2 mb-4">
-                        {wf.command}
-                      </p>
-                    )}
-
-                    <div className="flex items-center justify-between pt-3 border-t border-border-secondary">
-                      <span className="text-[10px] font-mono text-text-muted bg-bg-secondary px-2 py-0.5 rounded">
-                        {wf.trace_id.slice(0, 8)}...
-                      </span>
-                      {wf.created_at && (
-                        <span className="text-[10px] text-text-muted">{new Date(wf.created_at).toLocaleDateString()}</span>
-                      )}
-                    </div>
-                  </div>
-                </div>
-              );
-            })}
-          </div>
-        )}
+        <button
+          onClick={() => onSelectWorkflow('new')}
+          className="px-4 py-2 rounded-[10px] bg-accent text-white text-xs font-semibold hover:bg-accent-hover hover:-translate-y-px hover:shadow-[0_4px_16px_rgba(156,175,136,0.3)] transition-all"
+        >
+          + {t('workflow.createWorkflow')}
+        </button>
       </div>
+
+      {/* Stats */}
+      <div className="grid grid-cols-4 gap-3 mb-6">
+        <div className="p-4 bg-bg-card rounded-xl border border-border-primary">
+          <div className="text-[10px] font-semibold uppercase tracking-[1px] text-text-muted mb-1.5">{t('workflow.total')}</div>
+          <div className="text-[22px] font-bold text-text-primary">{stats.total}</div>
+        </div>
+        <div className="p-4 bg-bg-card rounded-xl border border-border-primary">
+          <div className="text-[10px] font-semibold uppercase tracking-[1px] text-text-muted mb-1.5">{t('workflow.status.running')}</div>
+          <div className="text-[22px] font-bold text-[#7a8e6a]">{stats.running}</div>
+        </div>
+        <div className="p-4 bg-bg-card rounded-xl border border-border-primary">
+          <div className="text-[10px] font-semibold uppercase tracking-[1px] text-text-muted mb-1.5">{t('workflow.status.completed')}</div>
+          <div className="text-[22px] font-bold text-[#9a7d5e]">{stats.completed}</div>
+        </div>
+        <div className="p-4 bg-bg-card rounded-xl border border-border-primary">
+          <div className="text-[10px] font-semibold uppercase tracking-[1px] text-text-muted mb-1.5">{t('workflow.queued')}</div>
+          <div className="text-[22px] font-bold text-[#6e7d8d]">{stats.queued}</div>
+        </div>
+      </div>
+
+      {workflows.length === 0 ? (
+        <div className="flex flex-col items-center justify-center border border-dashed border-border-primary rounded-xl bg-bg-card/50 p-16 text-center">
+          <div className="w-14 h-14 bg-bg-secondary rounded-xl flex items-center justify-center mb-4">
+            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" className="w-7 h-7 text-text-muted"><path d="M13 2L3 14h9l-1 8 10-12h-9l1-8z"/></svg>
+          </div>
+          <h3 className="text-base font-semibold text-text-primary mb-1">{t('workflow.noWorkflows')}</h3>
+          <p className="text-sm text-text-muted max-w-xs">{t('workflow.workflowsAppearHere')}</p>
+        </div>
+      ) : (
+        <div className="grid grid-cols-[repeat(auto-fill,minmax(280px,1fr))] gap-3">
+          {workflows.map((wf) => {
+            const style = getStatusStyle(wf.status);
+            return (
+              <div
+                key={wf.trace_id}
+                onClick={() => onSelectWorkflow(wf.trace_id)}
+                className="p-4 bg-bg-card rounded-xl border border-border-primary cursor-pointer transition-all hover:shadow-[0_4px_16px_rgba(0,0,0,0.05)] hover:-translate-y-0.5 hover:border-[#d5d0ca] dark:hover:border-white/10"
+              >
+                <div className="flex justify-between items-center mb-3">
+                  <span className={`text-[10px] font-semibold px-2.5 py-[3px] rounded-[20px] tracking-[0.3px] ${style.bg} ${style.text}`}>
+                    {style.label}
+                  </span>
+                </div>
+                <h3 className="text-[13px] font-semibold text-text-primary mb-[5px] line-clamp-1" title={wf.title || t('common.unnamed')}>
+                  {wf.title || t('common.unnamed')}
+                </h3>
+                {wf.command && (
+                  <p className="text-xs text-text-muted leading-relaxed mb-3.5 line-clamp-2">
+                    {wf.command}
+                  </p>
+                )}
+                <div className="flex justify-between items-center pt-3 border-t border-border-primary">
+                  <span className="text-[10px] text-[#b5afa8] font-mono bg-bg-primary px-2 py-0.5 rounded">
+                    {wf.trace_id.slice(-8)}
+                  </span>
+                  {wf.created_at && (
+                    <span className="text-[11px] text-text-muted">{new Date(wf.created_at).toLocaleDateString()}</span>
+                  )}
+                </div>
+              </div>
+            );
+          })}
+        </div>
+      )}
     </div>
   );
 }
diff --git a/frontend/src/components/Layout/CollapsibleSidebar.tsx b/frontend/src/components/Layout/CollapsibleSidebar.tsx
index b32cdbb..dcbad9d 100644
--- a/frontend/src/components/Layout/CollapsibleSidebar.tsx
+++ b/frontend/src/components/Layout/CollapsibleSidebar.tsx
@@ -33,7 +33,7 @@ export function CollapsibleSidebar() {
         isSidebarOpen ? 'w-56' : 'w-14'
       }`}
     >
-      <div className="flex-1 py-3 space-y-1">
+      <div className="flex-1 py-3 space-y-0.5">
         {navItems.map((item) => {
           const isActive = activeTab === item.key;
           return (
@@ -42,18 +42,15 @@ export function CollapsibleSidebar() {
               onClick={() => setTab(item.key as any)}
               className={`w-full flex items-center mx-1.5 rounded-lg transition-all duration-200 group ${
                 isActive
-                  ? 'bg-accent-light text-accent'
-                  : 'text-text-muted hover:text-text-secondary hover:bg-bg-hover'
+                  ? 'bg-white/50 dark:bg-white/[0.06] text-text-primary shadow-[0_1px_3px_rgba(0,0,0,0.04)]'
+                  : 'text-text-muted hover:text-text-secondary hover:bg-white/40 dark:hover:bg-white/[0.04]'
               } ${isSidebarOpen ? 'px-3 py-2.5 gap-3' : 'px-0 py-2.5 justify-center'}`}
               style={{ width: isSidebarOpen ? 'calc(100% - 12px)' : 'calc(100% - 12px)' }}
             >
-              <item.icon size={18} className={`flex-shrink-0 transition-transform group-hover:scale-110 ${isActive ? 'text-accent' : ''}`} />
+              <item.icon size={16} className={`flex-shrink-0 transition-transform group-hover:scale-110 ${isActive ? 'text-accent' : ''}`} />
               {isSidebarOpen && (
                 <span className="text-xs font-medium">{item.label}</span>
               )}
-              {isActive && isSidebarOpen && (
-                <div className="ml-auto w-1 h-1 rounded-full bg-accent" />
-              )}
             </button>
           );
         })}
diff --git a/frontend/src/components/Layout/TopBar.tsx b/frontend/src/components/Layout/TopBar.tsx
index c148397..42f4a68 100644
--- a/frontend/src/components/Layout/TopBar.tsx
+++ b/frontend/src/components/Layout/TopBar.tsx
@@ -36,83 +36,77 @@ export function TopBar() {
   };
 
   return (
-    <div className="h-14 glass text-text-primary flex items-center justify-between px-5 shrink-0 z-50 relative">
-      {/* Left: Logo with status */}
-      <div className="flex items-center gap-3">
-        <div className="relative">
-          <div className="w-8 h-8 rounded-lg bg-gradient-to-br from-accent to-glow-purple flex items-center justify-center text-white shadow-lg">
-            <Zap size={18} fill="currentColor" />
+    <div className="h-[52px] glass text-text-primary flex items-center justify-between px-5 shrink-0 z-50 relative">
+      {/* Left: Logo + Nav */}
+      <div className="flex items-center">
+        <div className="flex items-center gap-2.5">
+          <div className="w-7 h-7 rounded-[7px] bg-accent flex items-center justify-center">
+            <Zap size={14} className="text-white" />
           </div>
-          <span className="status-dot absolute -bottom-0.5 -right-0.5 w-2.5 h-2.5 rounded-full bg-success border-2 border-bg-card" />
+          <span className="text-[15px] font-bold tracking-[-0.3px] text-text-primary">{t('app.name')}</span>
         </div>
-        <div className="flex flex-col leading-none">
-          <span className="font-bold text-sm tracking-tight text-text-primary">{t('app.name')}</span>
-          <span className="text-[10px] text-text-muted font-medium tracking-wide">{t('app.tagline')}</span>
-        </div>
-      </div>
 
-      {/* Center: Mode Switch */}
-      <div className="hidden md:flex items-center bg-bg-secondary/80 rounded-full p-0.5 border border-border-primary">
-        <button
-          onClick={() => { setMode('work'); setShowSettings(false); }}
-          className={`px-4 py-1.5 rounded-full text-xs font-semibold transition-all duration-200 ${
-            mode === 'work' && !showSettings
-              ? 'bg-bg-card text-accent shadow-sm'
-              : 'text-text-muted hover:text-text-secondary'
-          }`}
-        >
-          {t('nav.work')}
-        </button>
-        <button
-          onClick={() => { setMode('agent'); setShowSettings(false); }}
-          className={`px-4 py-1.5 rounded-full text-xs font-semibold transition-all duration-200 ${
-            mode === 'agent' && !showSettings
-              ? 'bg-bg-card text-accent shadow-sm'
-              : 'text-text-muted hover:text-text-secondary'
-          }`}
-        >
-          {t('nav.agent')}
-        </button>
+        {/* Center: Pill Nav */}
+        <div className="hidden md:flex items-center gap-px p-0.5 bg-bg-input rounded-lg ml-5">
+          <button
+            onClick={() => { setMode('work'); setShowSettings(false); }}
+            className={`px-3.5 py-[5px] rounded-md text-xs font-semibold transition-all ${
+              mode === 'work' && !showSettings
+                ? 'bg-bg-card text-text-primary shadow-[0_1px_3px_rgba(0,0,0,0.06)]'
+                : 'text-text-muted hover:text-text-secondary'
+            }`}
+          >
+            {t('nav.work')}
+          </button>
+          <button
+            onClick={() => { setMode('agent'); setShowSettings(false); }}
+            className={`px-3.5 py-[5px] rounded-md text-xs font-semibold transition-all ${
+              mode === 'agent' && !showSettings
+                ? 'bg-bg-card text-text-primary shadow-[0_1px_3px_rgba(0,0,0,0.06)]'
+                : 'text-text-muted hover:text-text-secondary'
+            }`}
+          >
+            {t('nav.agent')}
+          </button>
+        </div>
       </div>
 
       {/* Right: Actions */}
       <div className="flex items-center gap-1">
         <button
           onClick={toggleLanguage}
-          className="p-2 rounded-lg text-text-muted hover:text-text-primary hover:bg-bg-hover transition-all"
+          className="w-8 h-8 rounded-lg text-text-muted hover:text-text-secondary hover:bg-bg-hover transition-all flex items-center justify-center"
           title={i18n.language.startsWith('zh') ? t('topbar.switchToEn') : t('topbar.switchToZh')}
         >
-          <Globe size={16} />
+          <Globe size={15} />
         </button>
 
         <button
           onClick={toggleTheme}
-          className="p-2 rounded-lg text-text-muted hover:text-text-primary hover:bg-bg-hover transition-all"
+          className="w-8 h-8 rounded-lg text-text-muted hover:text-text-secondary hover:bg-bg-hover transition-all flex items-center justify-center"
           title={resolvedTheme === 'dark' ? t('topbar.lightMode') : t('topbar.darkMode')}
         >
-          {resolvedTheme === 'dark' ? <Sun size={16} /> : <Moon size={16} />}
+          {resolvedTheme === 'dark' ? <Sun size={15} /> : <Moon size={15} />}
         </button>
 
-        <div className="w-px h-4 bg-border-primary mx-1" />
-
         <button
           onClick={() => setShowSettings(!showSettings)}
-          className={`p-2 rounded-lg transition-all ${
+          className={`w-8 h-8 rounded-lg transition-all flex items-center justify-center ${
             showSettings
               ? 'bg-accent-light text-accent'
-              : 'text-text-muted hover:text-text-primary hover:bg-bg-hover'
+              : 'text-text-muted hover:text-text-secondary hover:bg-bg-hover'
           }`}
           title={t('nav.settings')}
         >
-          <Settings size={16} />
+          <Settings size={15} />
         </button>
 
         <button
           onClick={handleLogout}
-          className="p-2 rounded-lg text-text-muted hover:text-danger hover:bg-danger-bg transition-all ml-0.5"
+          className="w-8 h-8 rounded-lg text-text-muted hover:text-danger hover:bg-danger-bg transition-all flex items-center justify-center"
           title={t('topbar.logout')}
         >
-          <LogOut size={16} />
+          <LogOut size={15} />
         </button>
       </div>
     </div>
diff --git a/frontend/src/components/Settings/SettingsLayout.tsx b/frontend/src/components/Settings/SettingsLayout.tsx
index dc56ff1..1776a6e 100644
--- a/frontend/src/components/Settings/SettingsLayout.tsx
+++ b/frontend/src/components/Settings/SettingsLayout.tsx
@@ -14,23 +14,25 @@ export function SettingsLayout() {
   ];
 
   return (
-    <div className="flex-1 flex bg-bg-secondary overflow-hidden">
+    <div className="flex-1 flex bg-bg-primary overflow-hidden">
       <div className="w-56 bg-bg-sidebar border-r border-border-primary flex flex-col">
-        <div className="px-5 py-4 border-b border-border-primary">
-          <h2 className="text-sm font-bold text-text-primary">{t('settings.settings')}</h2>
+        <div className="px-4 py-3.5">
+          <span className="text-[10px] font-semibold text-text-muted uppercase tracking-[1.5px]">
+            {t('settings.settings')}
+          </span>
         </div>
-        <div className="p-2 space-y-0.5">
+        <div className="px-1.5 pb-2 space-y-0.5">
           {tabs.map((tab) => (
             <button
               key={tab.key}
               onClick={() => setSettingsTab(tab.key)}
-              className={`w-full flex items-center gap-3 px-3 py-2.5 rounded-lg text-xs font-medium transition-all ${
+              className={`w-full flex items-center gap-2.5 px-2.5 py-2 rounded-lg text-xs font-medium transition-all ${
                 settingsTab === tab.key
-                  ? 'bg-accent-light text-accent'
-                  : 'text-text-muted hover:text-text-secondary hover:bg-bg-hover'
+                  ? 'bg-bg-card text-text-primary shadow-[0_1px_3px_rgba(0,0,0,0.04)]'
+                  : 'text-text-muted hover:text-text-secondary hover:bg-white/50 dark:hover:bg-white/[0.04]'
               }`}
             >
-              <tab.icon size={15} />
+              <tab.icon size={14} />
               {tab.label}
             </button>
           ))}
diff --git a/frontend/src/i18n/locales/en.json b/frontend/src/i18n/locales/en.json
index 498ba45..186a7e0 100644
--- a/frontend/src/i18n/locales/en.json
+++ b/frontend/src/i18n/locales/en.json
@@ -88,7 +88,9 @@
       "running": "Running",
       "completed": "Completed",
       "failed": "Failed"
-    }
+    },
+    "total": "Total",
+    "queued": "Queued"
   },
   "settings": {
     "settings": "Settings",
diff --git a/frontend/src/i18n/locales/zh.json b/frontend/src/i18n/locales/zh.json
index 1c34de4..369bb98 100644
--- a/frontend/src/i18n/locales/zh.json
+++ b/frontend/src/i18n/locales/zh.json
@@ -88,7 +88,9 @@
       "running": "运行中",
       "completed": "已完成",
       "failed": "失败"
-    }
+    },
+    "total": "总数",
+    "queued": "排队中"
   },
   "settings": {
     "settings": "设置",
diff --git a/frontend/src/index.css b/frontend/src/index.css
index 1fb24c5..b841d31 100644
--- a/frontend/src/index.css
+++ b/frontend/src/index.css
@@ -38,72 +38,83 @@
   --color-warning-bg: var(--warning-bg);
   --color-glow-purple: var(--glow-purple);
   --color-glow-cyan: var(--glow-cyan);
+  --color-clay: var(--clay);
+  --color-slate: var(--slate);
+  --color-terracotta: var(--terracotta);
   --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
   --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
 }
 
+/* ===== Morandi Light ===== */
 :root {
-  --bg-primary: #fafafa;
-  --bg-secondary: #f4f4f5;
-  --bg-tertiary: #e4e4e7;
-  --bg-card: #ffffff;
-  --bg-sidebar: #f4f4f5;
-  --bg-topbar: rgba(255, 255, 255, 0.72);
-  --bg-input: #f4f4f5;
-  --bg-hover: #f4f4f5;
-  --bg-active: #eff6ff;
-  --bg-glass: rgba(255, 255, 255, 0.6);
-  --border-primary: #e4e4e7;
-  --border-secondary: #f4f4f5;
-  --text-primary: #18181b;
-  --text-secondary: #3f3f46;
-  --text-tertiary: #52525b;
-  --text-muted: #a1a1aa;
-  --accent: #4f46e5;
-  --accent-hover: #4338ca;
-  --accent-light: #e0e7ff;
-  --accent-text: #3730a3;
-  --accent-glow: rgba(79, 70, 229, 0.15);
-  --danger: #dc2626;
-  --danger-bg: #fef2f2;
-  --success: #16a34a;
-  --success-bg: #f0fdf4;
-  --warning: #d97706;
-  --warning-bg: #fffbeb;
-  --glow-purple: #a855f7;
-  --glow-cyan: #06b6d4;
+  --bg-primary: #f2f0ed;
+  --bg-secondary: #eae8e4;
+  --bg-tertiary: #e0ddd8;
+  --bg-card: #faf9f7;
+  --bg-sidebar: #eae8e4;
+  --bg-topbar: rgba(250, 249, 247, 0.85);
+  --bg-input: #f2f0ed;
+  --bg-hover: rgba(255, 255, 255, 0.4);
+  --bg-active: rgba(156, 175, 136, 0.08);
+  --bg-glass: rgba(250, 249, 247, 0.72);
+  --border-primary: #e0ddd8;
+  --border-secondary: #eae8e4;
+  --text-primary: #3d3d3d;
+  --text-secondary: #5a5a5a;
+  --text-tertiary: #8c8680;
+  --text-muted: #b5afa8;
+  --accent: #9caf88;
+  --accent-hover: #8a9e78;
+  --accent-light: rgba(156, 175, 136, 0.12);
+  --accent-text: #7a8e6a;
+  --accent-glow: rgba(156, 175, 136, 0.2);
+  --danger: #c4917a;
+  --danger-bg: rgba(196, 145, 122, 0.08);
+  --success: #7a8e6a;
+  --success-bg: rgba(122, 142, 106, 0.08);
+  --warning: #c4a882;
+  --warning-bg: rgba(196, 168, 130, 0.08);
+  --glow-purple: #8a9aaa;
+  --glow-cyan: #c4a882;
+  --clay: #c4a882;
+  --slate: #8a9aaa;
+  --terracotta: #c4917a;
 }
 
+/* ===== Morandi Dark ===== */
 .dark {
-  --bg-primary: #09090b;
-  --bg-secondary: #0f0f11;
-  --bg-tertiary: #18181b;
-  --bg-card: #131316;
-  --bg-sidebar: #0c0c0e;
-  --bg-topbar: rgba(9, 9, 11, 0.72);
-  --bg-input: #18181b;
-  --bg-hover: #1c1c1f;
-  --bg-active: rgba(79, 70, 229, 0.12);
-  --bg-glass: rgba(19, 19, 22, 0.6);
-  --border-primary: rgba(255, 255, 255, 0.08);
-  --border-secondary: rgba(255, 255, 255, 0.04);
-  --text-primary: #fafafa;
-  --text-secondary: #e4e4e7;
-  --text-tertiary: #a1a1aa;
-  --text-muted: #71717a;
-  --accent: #6366f1;
-  --accent-hover: #818cf8;
-  --accent-light: rgba(99, 102, 241, 0.15);
-  --accent-text: #a5b4fc;
-  --accent-glow: rgba(99, 102, 241, 0.25);
-  --danger: #f87171;
-  --danger-bg: rgba(248, 113, 113, 0.1);
-  --success: #4ade80;
-  --success-bg: rgba(74, 222, 128, 0.1);
-  --warning: #fbbf24;
-  --warning-bg: rgba(251, 191, 36, 0.1);
-  --glow-purple: #c084fc;
-  --glow-cyan: #67e8f9;
+  --bg-primary: #1c1b19;
+  --bg-secondary: #232220;
+  --bg-tertiary: #2d2b28;
+  --bg-card: #252421;
+  --bg-sidebar: #1e1d1b;
+  --bg-topbar: rgba(28, 27, 25, 0.85);
+  --bg-input: #2d2b28;
+  --bg-hover: rgba(255, 255, 255, 0.04);
+  --bg-active: rgba(156, 175, 136, 0.1);
+  --bg-glass: rgba(37, 36, 33, 0.72);
+  --border-primary: rgba(255, 255, 255, 0.06);
+  --border-secondary: rgba(255, 255, 255, 0.03);
+  --text-primary: #e8e6e3;
+  --text-secondary: #c8c5c0;
+  --text-tertiary: #a09c96;
+  --text-muted: #7a7772;
+  --accent: #a8bc94;
+  --accent-hover: #b8caa6;
+  --accent-light: rgba(156, 175, 136, 0.15);
+  --accent-text: #c4d4b4;
+  --accent-glow: rgba(156, 175, 136, 0.2);
+  --danger: #d4a894;
+  --danger-bg: rgba(196, 145, 122, 0.1);
+  --success: #9caf88;
+  --success-bg: rgba(156, 175, 136, 0.1);
+  --warning: #c4a882;
+  --warning-bg: rgba(196, 168, 130, 0.1);
+  --glow-purple: #a0aab8;
+  --glow-cyan: #c4b89e;
+  --clay: #c4a882;
+  --slate: #8a9aaa;
+  --terracotta: #c4917a;
 }
 
 html {
@@ -118,16 +129,19 @@ body {
   -moz-osx-font-smoothing: grayscale;
 }
 
-/* Dot pattern background for dark mode */
-.dark body::before {
+/* Dot pattern background */
+body::before {
   content: "";
   position: fixed;
   inset: 0;
-  background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.04) 1px, transparent 0);
+  background-image: radial-gradient(circle at 1px 1px, rgba(0, 0, 0, 0.012) 1px, transparent 0);
   background-size: 24px 24px;
   pointer-events: none;
   z-index: 0;
 }
+.dark body::before {
+  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.015) 1px, transparent 0);
+}
 
 /* Custom scrollbar */
 ::-webkit-scrollbar {
@@ -139,7 +153,7 @@ body {
 }
 ::-webkit-scrollbar-thumb {
   background: var(--border-primary);
-  border-radius: 10px;
+  border-radius: 4px;
 }
 ::-webkit-scrollbar-thumb:hover {
   background: var(--text-muted);
@@ -209,21 +223,23 @@ body {
 /* Glass effect */
 .glass {
   background: var(--bg-glass);
-  backdrop-filter: blur(16px) saturate(180%);
-  -webkit-backdrop-filter: blur(16px) saturate(180%);
+  backdrop-filter: blur(16px) saturate(140%);
+  -webkit-backdrop-filter: blur(16px) saturate(140%);
   border-bottom: 1px solid var(--border-primary);
 }
 
-/* Modern card hover */
+/* Card hover */
 .card-hover {
-  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s ease, border-color 0.2s ease;
+  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.25s ease, border-color 0.25s ease;
 }
 .card-hover:hover {
   transform: translateY(-2px);
-  box-shadow: 0 8px 30px -8px rgba(0, 0, 0, 0.12);
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
+  border-color: #d5d0ca;
 }
 .dark .card-hover:hover {
-  box-shadow: 0 8px 30px -8px rgba(0, 0, 0, 0.4);
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
+  border-color: rgba(255, 255, 255, 0.1);
 }
 
 /* Glow effects */
@@ -231,7 +247,7 @@ body {
   box-shadow: 0 0 20px -4px var(--accent-glow);
 }
 .glow-purple {
-  box-shadow: 0 0 30px -6px rgba(168, 85, 247, 0.3);
+  box-shadow: 0 0 30px -6px rgba(138, 154, 170, 0.2);
 }
 
 /* Status indicator pulse */