diff --git a/src/Layout.tsx b/src/Layout.tsx
index e33b451..ad24c11 100644
--- a/src/Layout.tsx
+++ b/src/Layout.tsx
@@ -19,80 +19,87 @@ export default function Layout() {
   }, [pathname]);
 
   return (
-    <div className="bg-gray-50 flex h-screen w-screen overflow-hidden text-gray-800 font-sans">
+    <div className="bg-[#f7f7f9] flex h-screen w-screen overflow-hidden text-txt font-sans">
       {/* 侧边栏导航 */}
-      <aside className="w-64 bg-white shadow-md flex flex-col z-10 shrink-0">
-        <div className="h-16 flex items-center px-6 border-b border-gray-100">
-          <i className="fa-solid fa-layer-group text-[#2563EB] text-2xl mr-3"></i>
-          <span className="text-xl font-bold text-gray-800">SAFe OS</span>
+      <aside className="w-64 bg-white border-r border-border flex flex-col z-10 shrink-0">
+        <div className="h-16 flex items-center px-6 border-b border-border">
+          <i className="fa-solid fa-layer-group text-magenta text-xl mr-3"></i>
+          <span className="text-lg font-extrabold text-txt">SAFe OS</span>
         </div>
-        
+
         <div className="p-4 flex-1">
-          <div className="text-xs font-semibold text-gray-400 uppercase tracking-wider mb-4">主导模块</div>
-          <nav className="space-y-2">
+          <div className="text-[10px] font-bold text-txt-muted uppercase tracking-widest mb-3 px-1">主导模块</div>
+          <nav className="space-y-1">
             <NavLink
               to="/"
               className={({ isActive }) =>
-                `flex items-center px-4 py-3 rounded-lg font-medium transition-colors ${
+                `flex items-center gap-3 px-4 py-2.5 rounded-xl text-sm font-semibold transition-all duration-150 ${
                   isActive && pathname === '/'
-                    ? "bg-blue-50 text-[#2563EB]"
-                    : "text-gray-600 hover:bg-gray-50 hover:text-[#2563EB]"
+                    ? "bg-magenta/10 text-magenta"
+                    : "text-txt hover:bg-surface-muted hover:text-magenta"
                 }`
               }
             >
-              <i className="fa-solid fa-house w-6"></i> 总览控制台
+              <i className="fa-solid fa-house w-4 text-center shrink-0"></i>
+              <span>总览控制台</span>
             </NavLink>
             <NavLink
               to="/planning"
               className={({ isActive }) =>
-                `flex items-center px-4 py-3 rounded-lg font-medium transition-colors ${
+                `flex items-center gap-3 px-4 py-2.5 rounded-xl text-sm font-semibold transition-all duration-150 ${
                   isActive
-                    ? "bg-blue-50 text-[#0EA5E9]"
-                    : "text-gray-600 hover:bg-gray-50 hover:text-[#0EA5E9]"
+                    ? "bg-[#0EA5E9]/10 text-[#0EA5E9]"
+                    : "text-txt hover:bg-surface-muted hover:text-[#0EA5E9]"
                 }`
               }
             >
-              <i className="fa-solid fa-chess-knight w-6"></i> 战略规划 (Planning)
+              <i className="fa-solid fa-chess-knight w-4 text-center shrink-0"></i>
+              <span>战略规划</span>
             </NavLink>
             <NavLink
               to="/devops"
               className={({ isActive }) =>
-                `flex items-center px-4 py-3 rounded-lg font-medium transition-colors ${
+                `flex items-center gap-3 px-4 py-2.5 rounded-xl text-sm font-semibold transition-all duration-150 ${
                   isActive
-                    ? "bg-green-50 text-[#10B981]"
-                    : "text-gray-600 hover:bg-gray-50 hover:text-[#10B981]"
+                    ? "bg-[#10B981]/10 text-[#10B981]"
+                    : "text-txt hover:bg-surface-muted hover:text-[#10B981]"
                 }`
               }
             >
-              <i className="fa-solid fa-code-branch w-6"></i> 开发运维 (DevOps)
+              <i className="fa-solid fa-code-branch w-4 text-center shrink-0"></i>
+              <span>开发运维</span>
             </NavLink>
             <NavLink
               to="/quality/dashboard"
-              className={({ isActive }) =>
-                `flex items-center px-4 py-3 rounded-lg font-medium transition-colors ${
+              className={() =>
+                `flex items-center gap-3 px-4 py-2.5 rounded-xl text-sm font-semibold transition-all duration-150 ${
                   pathname.startsWith('/quality')
-                    ? "bg-purple-50 text-[#8B5CF6]"
-                    : "text-gray-600 hover:bg-gray-50 hover:text-[#8B5CF6]"
+                    ? "bg-[#8B5CF6]/10 text-[#8B5CF6]"
+                    : "text-txt hover:bg-surface-muted hover:text-[#8B5CF6]"
                 }`
               }
             >
-              <i className="fa-solid fa-shield-halved w-6"></i> 质量门控 (Quality Gate)
+              <i className="fa-solid fa-shield-halved w-4 text-center shrink-0"></i>
+              <span>质量门控</span>
             </NavLink>
           </nav>
 
-          <div className="text-xs font-semibold text-gray-400 uppercase tracking-wider mt-8 mb-4">设置与支持</div>
-          <nav className="space-y-2">
-            <a href="#" className="flex items-center px-4 py-3 text-gray-600 hover:bg-gray-50 rounded-lg transition-colors">
-              <i className="fa-solid fa-gear w-6"></i> 平台设置
+          <div className="text-[10px] font-bold text-txt-muted uppercase tracking-widest mt-8 mb-3 px-1">设置与支持</div>
+          <nav className="space-y-1">
+            <a href="#" className="flex items-center gap-3 px-4 py-2.5 text-txt text-sm font-semibold hover:bg-surface-muted rounded-xl transition-all duration-150">
+              <i className="fa-solid fa-gear w-4 text-center shrink-0"></i>
+              <span>平台设置</span>
             </a>
           </nav>
         </div>
 
-        <div className="p-4 border-t border-gray-100 flex items-center">
-          <img src="https://ui-avatars.com/api/?name=Admin&background=F3F4F6&color=374151" alt="User" className="w-10 h-10 rounded-full mr-3" />
+        <div className="p-4 border-t border-border flex items-center gap-3">
+          <div className="w-9 h-9 rounded-full bg-magenta/10 text-magenta flex items-center justify-center text-sm font-bold shrink-0">A</div>
           <div>
-            <p className="text-sm font-semibold">项目管理员</p>
-            <p className="text-xs text-gray-500">在线</p>
+            <p className="text-sm font-semibold text-txt">项目管理员</p>
+            <p className="text-xs text-txt-muted flex items-center gap-1">
+              <span className="w-1.5 h-1.5 bg-green-400 rounded-full inline-block"></span>在线
+            </p>
           </div>
         </div>
       </aside>
@@ -100,24 +107,24 @@ export default function Layout() {
       {/* 主内容区 */}
       <main className="flex-1 flex flex-col h-screen overflow-y-auto relative min-w-0">
         {/* 顶部导航 */}
-        <header className="h-16 bg-white shadow-sm flex items-center justify-between px-8 z-0 shrink-0">
-          <h1 className="text-xl font-semibold text-gray-800">{pageTitle}</h1>
+        <header className="h-14 bg-white border-b border-border flex items-center justify-between px-8 z-0 shrink-0 shadow-[0_1px_4px_rgba(0,0,0,0.04)]">
+          <h1 className="text-base font-bold text-txt">{pageTitle}</h1>
           {pathname === '/' && (
-            <div className="flex items-center space-x-4">
+            <div className="flex items-center gap-3">
               <div className="relative">
-                <i className="fa-solid fa-search absolute left-3 top-1/2 transform -translate-y-1/2 text-gray-400"></i>
-                <input type="text" placeholder="全局搜索需求、代码或 PR..." className="pl-10 pr-4 py-2 border border-gray-200 rounded-full text-sm focus:outline-none focus:border-[#2563EB] focus:ring-1 focus:ring-[#2563EB] w-64 transition-all" />
+                <i className="fa-solid fa-search absolute left-3 top-1/2 -translate-y-1/2 text-txt-muted text-xs"></i>
+                <input type="text" placeholder="搜索需求、代码或 PR…" className="pl-9 pr-4 py-2 border border-border rounded-xl text-sm focus:outline-none focus:border-magenta focus:ring-2 focus:ring-magenta/10 w-60 transition-all bg-[#f7f7f9]" />
               </div>
-              <button className="relative p-2 text-gray-500 hover:text-[#2563EB] transition-colors">
-                <i className="fa-regular fa-bell text-xl"></i>
-                <span className="absolute top-1 right-1 w-2.5 h-2.5 bg-red-500 rounded-full border-2 border-white"></span>
+              <button className="relative p-2 text-txt-muted hover:text-magenta transition-colors">
+                <i className="fa-regular fa-bell text-base"></i>
+                <span className="absolute top-1.5 right-1.5 w-2 h-2 bg-red-500 rounded-full border border-white"></span>
               </button>
             </div>
           )}
         </header>
 
         {/* 内容画布 */}
-        <div className="flex-1 w-full bg-gray-50 overflow-y-auto">
+        <div className="flex-1 w-full bg-[#f7f7f9] overflow-y-auto">
           <Outlet />
         </div>
       </main>
diff --git a/src/index.css b/src/index.css
index f8bb681..d16c4cb 100644
--- a/src/index.css
+++ b/src/index.css
@@ -23,7 +23,7 @@
     -webkit-font-smoothing: antialiased;
     -moz-osx-font-smoothing: grayscale;
     background:
-      radial-gradient(circle at 20% -10%, #fff0f7 0%, transparent 35%),
+      radial-gradient(circle at 20% -10%, #eef2ff 0%, transparent 35%),
       radial-gradient(circle at 90% 0%, #f5f5f5 0%, transparent 28%),
       #fff;
     color: #1a1a1a;
diff --git a/src/pages/DevOpsAgent.tsx b/src/pages/DevOpsAgent.tsx
index 7c061b5..43c7e4d 100644
--- a/src/pages/DevOpsAgent.tsx
+++ b/src/pages/DevOpsAgent.tsx
@@ -489,7 +489,7 @@ export default function DevOpsAgent() {
     <div className="flex flex-col h-full overflow-hidden bg-[#f7f7f9]">
       {/* ── 步骤栏 ── */}
       <div className="shrink-0 border-b border-border bg-white shadow-[0_1px_8px_rgba(0,0,0,0.04)]">
-        <div className="flex items-center gap-0 px-8 py-0">
+        <div className="flex items-center gap-0 px-[60px] py-0">
           {STEPS.map((s, i) => (
             <div key={i} className="flex items-center">
               <button
@@ -532,15 +532,15 @@ export default function DevOpsAgent() {
 
       {/* Error */}
       {error && (
-        <div className="flex items-center justify-between px-4 py-2.5 mx-8 mt-4 text-sm text-red-700 bg-red-50 border border-red-200 rounded-xl">
+        <div className="flex items-center justify-between px-4 py-2.5 mx-10 mt-4 text-sm text-red-700 bg-red-50 border border-red-200 rounded-xl">
           <span className="flex items-center gap-2"><span>⚠️</span>{error}</span>
           <button className="ml-4 font-bold text-red-300 hover:text-red-500" onClick={() => setError("")}>✕</button>
         </div>
       )}
 
       {/* ── 内容区 ── */}
-      <div className="flex-1 px-8 py-6 overflow-y-auto">
-        <div className="max-w-5xl mx-auto space-y-0">
+      <div className="flex-1 px-[60px] py-6 overflow-y-auto">
+        <div className="space-y-0">
 
           {/* ═══ Step 0: Requirement Input ═══ */}
           {step === 0 && !sessionId && (
diff --git a/src/pages/Home.tsx b/src/pages/Home.tsx
index bdb7768..0c442f6 100644
--- a/src/pages/Home.tsx
+++ b/src/pages/Home.tsx
@@ -3,132 +3,171 @@ import { Link } from 'react-router-dom';
 
 export default function Home() {
   return (
-    <div className="p-8 max-w-7xl mx-auto w-full">
-      {/* 欢迎与 AI 提示 */}
-      <div className="bg-gradient-to-r from-blue-600 to-indigo-700 rounded-2xl p-8 text-white mb-8 shadow-lg flex justify-between items-center">
-        <div>
-          <h2 className="text-3xl font-bold mb-2">欢迎回来, SAFe OS 团队 👋</h2>
-          <p className="text-blue-100 mb-4 text-lg">AI Agent 已经准备就绪，今天想从哪个环节开始推进项目？</p>
-          <div className="flex items-center text-sm bg-black/20 inline-block px-4 py-2 rounded-lg backdrop-blur-sm">
-            <i className="fa-solid fa-robot mr-2 text-blue-300"></i> AI 状态: <span className="text-green-300 ml-1 font-semibold">✓ 运行中 (随时可唤醒)</span>
+    <div className="p-[60px] w-full min-h-[calc(100vh-3.5rem)] flex flex-col">
+
+      {/* 欢迎横幅 */}
+      <div className="mb-8 flex items-center justify-between overflow-hidden relative rounded-2xl border border-magenta/15 bg-gradient-to-br from-magenta/[0.06] via-white to-white shadow-[0_4px_16px_rgba(99,102,241,0.06)] p-6">
+        <div className="absolute top-0 left-0 right-0 h-0.5 bg-gradient-to-r from-magenta via-magenta/60 to-transparent"></div>
+        <div className="pt-1">
+          <h2 className="text-2xl font-extrabold text-txt mb-1.5">欢迎回来，SAFe OS 团队 👋</h2>
+          <p className="text-txt-muted text-sm mb-4">AI Agent 已准备就绪，今天想从哪个环节开始推进项目？</p>
+          <div className="flex items-center gap-2 text-sm bg-surface-muted px-4 py-2 rounded-xl w-fit">
+            <span className="w-2 h-2 bg-green-400 rounded-full shrink-0"></span>
+            <span className="text-txt-muted">AI 状态：</span>
+            <span className="text-green-600 font-semibold">运行中（随时可唤醒）</span>
           </div>
         </div>
-        <div className="hidden md:block text-right">
-          <div className="text-5xl font-bold opacity-20"><i className="fa-brands fa-hubspot"></i></div>
+        <div className="hidden md:block shrink-0 ml-8 text-6xl font-extrabold text-txt opacity-[0.04] select-none">
+          <i className="fa-brands fa-hubspot"></i>
         </div>
       </div>
 
-      {/* 数据概览精要 */}
-      <div className="grid grid-cols-1 md:grid-cols-3 gap-6 mb-8">
-        <div className="bg-white p-5 rounded-xl text-center border border-gray-100 shadow-sm">
-          <p className="text-sm text-gray-500 mb-1">规划中需求</p>
-          <p className="text-2xl font-bold text-gray-800">24 <span className="text-xs text-green-500 font-normal"><i className="fa-solid fa-arrow-up"></i> 3</span></p>
+      {/* 数据概览 */}
+      <div className="grid grid-cols-1 md:grid-cols-3 gap-5 mb-8">
+        <div className="bg-white rounded-2xl border border-border shadow-[0_4px_16px_rgba(0,0,0,0.04)] overflow-hidden flex">
+          <div className="w-1 shrink-0 bg-[#0EA5E9]"></div>
+          <div className="flex items-center gap-4 px-5 py-5 flex-1">
+            <div className="w-10 h-10 rounded-xl bg-[#0EA5E9]/10 flex items-center justify-center shrink-0">
+              <i className="fa-solid fa-list-check text-[#0EA5E9] text-sm"></i>
+            </div>
+            <div>
+              <p className="text-[11px] font-bold text-txt-muted uppercase tracking-wide mb-0.5">规划中需求</p>
+              <div className="flex items-baseline gap-1.5">
+                <span className="text-3xl font-extrabold text-txt leading-none">24</span>
+                <span className="text-xs font-semibold text-green-500">↑ 3</span>
+              </div>
+            </div>
+          </div>
         </div>
-        <div className="bg-white p-5 rounded-xl text-center border border-gray-100 shadow-sm">
-          <p className="text-sm text-gray-500 mb-1">待合入代码 (PRs)</p>
-          <p className="text-2xl font-bold text-gray-800">12 <span className="text-xs text-red-500 font-normal"><i className="fa-solid fa-arrow-down"></i> 2</span></p>
+        <div className="bg-white rounded-2xl border border-border shadow-[0_4px_16px_rgba(0,0,0,0.04)] overflow-hidden flex">
+          <div className="w-1 shrink-0 bg-[#10B981]"></div>
+          <div className="flex items-center gap-4 px-5 py-5 flex-1">
+            <div className="w-10 h-10 rounded-xl bg-[#10B981]/10 flex items-center justify-center shrink-0">
+              <i className="fa-solid fa-code-pull-request text-[#10B981] text-sm"></i>
+            </div>
+            <div>
+              <p className="text-[11px] font-bold text-txt-muted uppercase tracking-wide mb-0.5">待合入 PRs</p>
+              <div className="flex items-baseline gap-1.5">
+                <span className="text-3xl font-extrabold text-txt leading-none">12</span>
+                <span className="text-xs font-semibold text-red-500">↓ 2</span>
+              </div>
+            </div>
+          </div>
         </div>
-        <div className="bg-white p-5 rounded-xl text-center border border-gray-100 shadow-sm">
-          <p className="text-sm text-gray-500 mb-1">质量健康度</p>
-          <p className="text-2xl font-bold text-gray-800 focus-text">92% <span className="text-xs text-green-500 font-normal">优秀</span></p>
+        <div className="bg-white rounded-2xl border border-border shadow-[0_4px_16px_rgba(0,0,0,0.04)] overflow-hidden flex">
+          <div className="w-1 shrink-0 bg-[#8B5CF6]"></div>
+          <div className="flex items-center gap-4 px-5 py-5 flex-1">
+            <div className="w-10 h-10 rounded-xl bg-[#8B5CF6]/10 flex items-center justify-center shrink-0">
+              <i className="fa-solid fa-heart-pulse text-[#8B5CF6] text-sm"></i>
+            </div>
+            <div>
+              <p className="text-[11px] font-bold text-txt-muted uppercase tracking-wide mb-0.5">质量健康度</p>
+              <div className="flex items-baseline gap-1.5">
+                <span className="text-3xl font-extrabold text-txt leading-none">92%</span>
+                <span className="text-xs font-semibold text-green-500">优秀</span>
+              </div>
+            </div>
+          </div>
         </div>
       </div>
 
-      {/* 三大核心模块入口卡片 */}
-      <h3 className="text-lg font-bold text-gray-800 mb-4">核心工作流入口</h3>
-      <div className="grid grid-cols-1 md:grid-cols-3 gap-8">
-        
-        {/* 模块 1: 战略规划 (Planning) */}
-        <div className="module-card bg-white rounded-2xl overflow-hidden border border-gray-100 shadow-sm relative group flex flex-col hover:-translate-y-1 hover:shadow-xl transition-all duration-300">
-          <div className="h-2 bg-[#0EA5E9]"></div>
+      {/* 核心模块入口 */}
+      <div className="flex items-center gap-3 mb-5">
+        <h3 className="text-base font-extrabold text-txt">核心工作流入口</h3>
+        <div className="flex-1 h-px bg-border"></div>
+      </div>
+      <div className="grid grid-cols-1 md:grid-cols-3 gap-6 flex-1">
+
+        {/* 模块 1: 战略规划 */}
+        <div className="group flex flex-col bg-white rounded-2xl overflow-hidden border border-border shadow-[0_4px_16px_rgba(0,0,0,0.04)] hover:-translate-y-1 hover:shadow-[0_12px_32px_rgba(0,0,0,0.08)] transition-all duration-300">
+          <div className="h-1 bg-[#0EA5E9]"></div>
           <div className="p-6 flex-1">
-            <div className="w-12 h-12 bg-blue-50 text-[#0EA5E9] rounded-xl flex items-center justify-center text-2xl mb-4 group-hover:bg-[#0EA5E9] group-hover:text-white transition-colors">
+            <div className="w-11 h-11 bg-[#0EA5E9]/10 text-[#0EA5E9] rounded-xl flex items-center justify-center text-xl mb-4 group-hover:bg-[#0EA5E9] group-hover:text-white transition-colors duration-200">
               <i className="fa-solid fa-chess-knight"></i>
             </div>
-            <h4 className="text-xl font-bold text-gray-800 mb-2">战略规划</h4>
-            <p className="text-gray-500 mb-4 text-sm min-h-[60px]">一站式需求管理与分析。利用自然语言或文档，AI帮助您生成验收标准、拆解任务和预测边界情况。</p>
-            
-            <div className="space-y-3 mb-6">
-              <div className="flex items-center text-sm text-gray-600 bg-gray-50 p-2 rounded">
-                <i className="fa-solid fa-check text-[#0EA5E9] mr-2 w-4"></i> 智能需求分析与拆解
+            <h4 className="text-base font-extrabold text-txt mb-2">战略规划</h4>
+            <p className="text-txt-muted text-sm mb-5 leading-relaxed">一站式需求管理与分析。利用自然语言或文档，AI 帮助生成验收标准、拆解任务和预测边界情况。</p>
+            <div className="space-y-2">
+              <div className="flex items-center gap-2.5 text-sm text-txt bg-surface-muted px-3 py-2 rounded-lg">
+                <i className="fa-solid fa-check text-[#0EA5E9] text-xs shrink-0"></i>
+                <span>智能需求分析与拆解</span>
               </div>
-              <div className="flex items-center text-sm text-gray-600 bg-gray-50 p-2 rounded">
-                <i className="fa-solid fa-check text-[#0EA5E9] mr-2 w-4"></i> 上下文动态问题对话
+              <div className="flex items-center gap-2.5 text-sm text-txt bg-surface-muted px-3 py-2 rounded-lg">
+                <i className="fa-solid fa-check text-[#0EA5E9] text-xs shrink-0"></i>
+                <span>上下文动态问题对话</span>
               </div>
             </div>
           </div>
-          <div className="px-6 py-4 bg-gray-50 border-t border-gray-100">
-            <Link to="/planning" className="block text-center w-full py-2 bg-white border border-gray-200 text-[#0EA5E9] font-semibold rounded-lg hover:border-[#0EA5E9] hover:bg-blue-50 transition-colors">
-              进入规划看板 &rarr;
+          <div className="px-6 py-4 bg-surface-muted border-t border-border">
+            <Link to="/planning" className="block text-center w-full py-2 bg-white border border-border text-[#0EA5E9] text-sm font-semibold rounded-xl hover:border-[#0EA5E9] hover:bg-[#0EA5E9]/5 transition-colors">
+              进入规划看板 →
             </Link>
           </div>
         </div>
 
-        {/* 模块 2: 开发运维 (DevOps) */}
-        <div className="module-card bg-white rounded-2xl overflow-hidden border border-gray-100 shadow-sm relative group flex flex-col hover:-translate-y-1 hover:shadow-xl transition-all duration-300">
-          <div className="h-2 bg-[#10B981]"></div>
+        {/* 模块 2: 开发运维 */}
+        <div className="group flex flex-col bg-white rounded-2xl overflow-hidden border border-border shadow-[0_4px_16px_rgba(0,0,0,0.04)] hover:-translate-y-1 hover:shadow-[0_12px_32px_rgba(0,0,0,0.08)] transition-all duration-300">
+          <div className="h-1 bg-[#10B981]"></div>
           <div className="p-6 flex-1">
-            <div className="w-12 h-12 bg-green-50 text-[#10B981] rounded-xl flex items-center justify-center text-2xl mb-4 group-hover:bg-[#10B981] group-hover:text-white transition-colors">
+            <div className="w-11 h-11 bg-[#10B981]/10 text-[#10B981] rounded-xl flex items-center justify-center text-xl mb-4 group-hover:bg-[#10B981] group-hover:text-white transition-colors duration-200">
               <i className="fa-solid fa-code-branch"></i>
             </div>
-            <h4 className="text-xl font-bold text-gray-800 mb-2">开发运维</h4>
-            <p className="text-gray-500 mb-4 text-sm min-h-[60px]">智能研发辅助流水线。输入功能点描述即可生成规范的代码框架和单元测试代码，一键直达测试验证。</p>
-            
-            <div className="space-y-3 mb-6">
-              <div className="flex items-center text-sm text-gray-600 bg-gray-50 p-2 rounded">
-                <i className="fa-solid fa-check text-[#10B981] mr-2 w-4"></i> AI 代码框架生成
+            <h4 className="text-base font-extrabold text-txt mb-2">开发运维</h4>
+            <p className="text-txt-muted text-sm mb-5 leading-relaxed">智能研发辅助流水线。输入功能点描述即可生成规范代码框架和单元测试，一键直达测试验证。</p>
+            <div className="space-y-2">
+              <div className="flex items-center gap-2.5 text-sm text-txt bg-surface-muted px-3 py-2 rounded-lg">
+                <i className="fa-solid fa-check text-[#10B981] text-xs shrink-0"></i>
+                <span>AI 代码框架生成</span>
               </div>
-              <div className="flex items-center text-sm text-gray-600 bg-gray-50 p-2 rounded">
-                <i className="fa-solid fa-check text-[#10B981] mr-2 w-4"></i> 自动化测试与建议
+              <div className="flex items-center gap-2.5 text-sm text-txt bg-surface-muted px-3 py-2 rounded-lg">
+                <i className="fa-solid fa-check text-[#10B981] text-xs shrink-0"></i>
+                <span>自动化测试与建议</span>
               </div>
             </div>
           </div>
-          <div className="px-6 py-4 bg-gray-50 border-t border-gray-100">
-            <Link to="/devops" className="block text-center w-full py-2 bg-white border border-gray-200 text-[#10B981] font-semibold rounded-lg hover:border-[#10B981] hover:bg-green-50 transition-colors">
-              开启开发流水线 &rarr;
+          <div className="px-6 py-4 bg-surface-muted border-t border-border">
+            <Link to="/devops" className="block text-center w-full py-2 bg-white border border-border text-[#10B981] text-sm font-semibold rounded-xl hover:border-[#10B981] hover:bg-[#10B981]/5 transition-colors">
+              开启开发流水线 →
             </Link>
           </div>
         </div>
 
-        {/* 模块 3: 质量门控 (Quality Gate) */}
-        <div className="module-card bg-white rounded-2xl overflow-hidden border border-gray-100 shadow-sm relative group flex flex-col hover:-translate-y-1 hover:shadow-xl transition-all duration-300">
-          <div className="h-2 bg-[#8B5CF6]"></div>
+        {/* 模块 3: 质量门控 */}
+        <div className="group flex flex-col bg-white rounded-2xl overflow-hidden border border-border shadow-[0_4px_16px_rgba(0,0,0,0.04)] hover:-translate-y-1 hover:shadow-[0_12px_32px_rgba(0,0,0,0.08)] transition-all duration-300">
+          <div className="h-1 bg-[#8B5CF6]"></div>
           <div className="p-6 flex-1">
-            <div className="w-12 h-12 bg-purple-50 text-[#8B5CF6] rounded-xl flex items-center justify-center text-2xl mb-4 group-hover:bg-[#8B5CF6] group-hover:text-white transition-colors">
+            <div className="w-11 h-11 bg-[#8B5CF6]/10 text-[#8B5CF6] rounded-xl flex items-center justify-center text-xl mb-4 group-hover:bg-[#8B5CF6] group-hover:text-white transition-colors duration-200">
               <i className="fa-solid fa-shield-halved"></i>
             </div>
-            <h4 className="text-xl font-bold text-gray-800 mb-2">质量门控</h4>
-            <p className="text-gray-500 mb-4 text-sm min-h-[60px]">项目质量的守护神。提供可视化的Dashboard概览，智能审查 PR 修改，拦截代码漏洞与规范问题。</p>
-            
-            <div className="space-y-3 mb-6">
-              <div className="flex items-center text-sm text-gray-600 bg-gray-50 p-2 rounded">
-                <i className="fa-solid fa-check text-[#8B5CF6] mr-2 w-4"></i> PR 级智能安全扫描
+            <h4 className="text-base font-extrabold text-txt mb-2">质量门控</h4>
+            <p className="text-txt-muted text-sm mb-5 leading-relaxed">项目质量的守护神。提供可视化 Dashboard 概览，智能审查 PR，拦截代码漏洞与规范问题。</p>
+            <div className="space-y-2">
+              <div className="flex items-center gap-2.5 text-sm text-txt bg-surface-muted px-3 py-2 rounded-lg">
+                <i className="fa-solid fa-check text-[#8B5CF6] text-xs shrink-0"></i>
+                <span>PR 级智能安全扫描</span>
               </div>
-              <div className="flex items-center text-sm text-gray-600 bg-gray-50 p-2 rounded">
-                <i className="fa-solid fa-check text-[#8B5CF6] mr-2 w-4"></i> 对话式漏洞修复建议
+              <div className="flex items-center gap-2.5 text-sm text-txt bg-surface-muted px-3 py-2 rounded-lg">
+                <i className="fa-solid fa-check text-[#8B5CF6] text-xs shrink-0"></i>
+                <span>对话式漏洞修复建议</span>
               </div>
             </div>
           </div>
-          <div className="px-6 py-4 bg-gray-50 border-t border-gray-100">
-            <Link to="/quality" className="block text-center w-full py-2 bg-white border border-gray-200 text-[#8B5CF6] font-semibold rounded-lg hover:border-[#8B5CF6] hover:bg-purple-50 transition-colors">
-              查看质量大盘 &rarr;
+          <div className="px-6 py-4 bg-surface-muted border-t border-border">
+            <Link to="/quality" className="block text-center w-full py-2 bg-white border border-border text-[#8B5CF6] text-sm font-semibold rounded-xl hover:border-[#8B5CF6] hover:bg-[#8B5CF6]/5 transition-colors">
+              查看质量大盘 →
             </Link>
           </div>
         </div>
 
       </div>
 
-      {/* 全局悬浮 AI Agent 助手入口（占位） */}
-      <div className="fixed bottom-10 right-10 flex flex-col items-end z-50">
-        <div className="bg-white px-4 py-3 rounded-2xl shadow-lg border border-gray-100 mb-4 relative animate-fade-in-up">
-          <p className="text-sm text-gray-600">需要我帮您新建一个“提测需求”还是“审查PR”呢？</p>
-          <div className="absolute -bottom-2 right-6 w-4 h-4 bg-white border-b border-r border-gray-100 transform rotate-45"></div>
-        </div>
-        <button className="w-16 h-16 bg-[#2563EB] text-white rounded-full shadow-2xl flex items-center justify-center text-3xl hover:bg-blue-700 transition-colors ai-pulse">
-          <i className="fa-brands fa-hubspot"></i>
-        </button>
-      </div>
-
+      {/* 悬浮 AI 问答按钮 */}
+      <button
+        className="fixed bottom-8 right-8 w-14 h-14 bg-magenta text-white rounded-2xl shadow-[0_8px_24px_rgba(99,102,241,0.35)] hover:shadow-[0_12px_32px_rgba(99,102,241,0.45)] hover:-translate-y-1 active:translate-y-0 transition-all duration-200 flex items-center justify-center text-xl z-50"
+        title="AI 助手"
+      >
+        <i className="fa-solid fa-robot"></i>
+      </button>
     </div>
   );
-}
\ No newline at end of file
+}
diff --git a/src/pages/PlanningAgent.tsx b/src/pages/PlanningAgent.tsx
index 869c0dd..52c38b0 100644
--- a/src/pages/PlanningAgent.tsx
+++ b/src/pages/PlanningAgent.tsx
@@ -274,8 +274,8 @@ export default function PlanningAgent() {
     <div className="h-full">
       {/* ─── Main Chat ─── */}
       <div className="h-full flex flex-col min-w-0">
-        <div className="flex-1 overflow-y-auto px-10 py-8">
-          <div className="flex flex-col gap-6 max-w-5xl w-full mx-auto">
+        <div className="flex-1 overflow-y-auto px-[72px] py-8">
+          <div className="flex flex-col gap-6 w-full">
             {state.messages.length === 0 && (
               <div className="text-center py-20 card">
                 <h2 className="text-2xl font-extrabold mb-2">Planning Council Agent</h2>
@@ -320,7 +320,7 @@ export default function PlanningAgent() {
 
         {/* Error */}
         {state.error && (
-          <div className="mx-10 mb-2 px-4 py-2 bg-red-50 text-red-700 text-sm flex justify-between items-center">
+          <div className="mx-[72px] mb-2 px-4 py-2 bg-red-50 text-red-700 text-sm flex justify-between items-center">
             {state.error}
             <button
               className="text-red-400 hover:text-red-600 font-bold"
diff --git a/tailwind.config.js b/tailwind.config.js
index f40227c..8969e6b 100644
--- a/tailwind.config.js
+++ b/tailwind.config.js
@@ -5,11 +5,11 @@ export default {
     extend: {
       colors: {
         magenta: {
-          DEFAULT: "#E20074",
-          50: "#FFF0F7",
-          100: "#FFE0EF",
-          600: "#E20074",
-          700: "#B8005E",
+          DEFAULT: "#6366F1",
+          50: "#EEF2FF",
+          100: "#E0E7FF",
+          600: "#6366F1",
+          700: "#4F46E5",
         },
         surface: {
           DEFAULT: "#FFFFFF",