diff --git a/miniprogram/src/components/TopInset.jsx b/miniprogram/src/components/TopInset.jsx
index 9b33710..4bdda3b 100644
--- a/miniprogram/src/components/TopInset.jsx
+++ b/miniprogram/src/components/TopInset.jsx
@@ -25,8 +25,9 @@ export function getTopInset() {
 }
 
 /** 统一固定标题区（fixed 不随滚动）：像素字 kicker + 彩虹渐变标题 + 像素字注脚。
+ *  back：传入函数=自定义返回；true=自动返回（无上一页则回首页 Tab）。
  *  占位高度由 createSelectorQuery 实测 navbar 真实高度，绝无空白/覆盖/重复。 */
-export function PageHeader({ no, title, en, sub }) {
+export function PageHeader({ no, title, en, sub, back }) {
   const { navH, windowWidth } = getTopInset();
   // 标题区整体上移 65rpx：从状态栏让位空间中扣除（不是容器偏移，占位实测自动跟随，无空白）
   const SHIFT_PX = Math.round((65 * (windowWidth || 375)) / 750);
@@ -40,7 +41,14 @@ export function PageHeader({ no, title, en, sub }) {
         .boundingClientRect((r) => { if (r && r.height) setH(r.height); })
         .exec();
     });
-  }, [no, title, en, sub]);
+  }, [no, title, en, sub, back]);
+
+  const goBack = () => {
+    if (typeof back === 'function') { back(); return; }
+    const pages = Taro.getCurrentPages ? Taro.getCurrentPages() : [];
+    if (pages.length > 1) Taro.navigateBack({ delta: 1 });
+    else Taro.switchTab({ url: '/pages/index/index' });
+  };
 
   return (
     <>
@@ -48,6 +56,11 @@ export function PageHeader({ no, title, en, sub }) {
         <View className="page-navbar-col">
           {no ? <Text className="page-navbar-no">{no}</Text> : null}
           <View className="page-navbar-titlerow">
+            {back ? (
+              <View className="page-navbar-back" hoverClass="pressed" onClick={goBack}>
+                <Text className="ic ic-arrow-left" aria-hidden />
+              </View>
+            ) : null}
             <Text className="page-navbar-title">{title}</Text>
             {sub ? <Text className="page-navbar-sub">{sub}</Text> : null}
           </View>
diff --git a/miniprogram/src/pages/policy/index.config.js b/miniprogram/src/pages/policy/index.config.js
index bdaf238..55498dd 100644
--- a/miniprogram/src/pages/policy/index.config.js
+++ b/miniprogram/src/pages/policy/index.config.js
@@ -1 +1 @@
-export default { navigationBarTitleText: '政策测评' };
+export default { navigationBarTitleText: '政策测评', navigationStyle: 'custom' };
diff --git a/miniprogram/src/pages/policy/index.jsx b/miniprogram/src/pages/policy/index.jsx
index 0ec5ff5..b077960 100644
--- a/miniprogram/src/pages/policy/index.jsx
+++ b/miniprogram/src/pages/policy/index.jsx
@@ -5,6 +5,7 @@ import { getUser } from '@/utils/auth';
 import { request, cachedRequest } from '@/utils/api';
 import { useTabIndex } from '@/utils/tab';
 import Skeleton from '@/components/skeleton';
+import { PageHeader } from '@/components/TopInset';
 import './index.scss';
 
 export default function Policy() {
@@ -76,6 +77,7 @@ export default function Policy() {
   if (!loaded) {
     return (
       <View className="policy page-in">
+        <PageHeader no="00" title="政策适配测评" en="Policy" back />
         <Text className="muted">正在加载测评…</Text>
         <View style={{ marginTop: 20 }}><Skeleton.Rows n={4} gap={18} /></View>
       </View>
@@ -85,6 +87,7 @@ export default function Policy() {
   if (result) {
     return (
       <View className="policy page-in">
+        <PageHeader no="02" title="适配结果" en="Result" back />
         <View className="summary">{result.summary}</View>
 
         <Text className="section-head">适配政策</Text>
@@ -141,9 +144,9 @@ export default function Policy() {
 
   return (
     <View className="policy quiz-center">
+      <PageHeader no="01" title="政策适配测评" en="Policy" back />
       <View className="ot-quiz-head">
         <View className="ot-quiz-top">
-          <Text className="ot-quiz-title">政策适配测评<Text className="ot-quiz-tag">5 题</Text></Text>
           <Text className="ot-progress-text">{current + 1} / {QUESTIONS.length} 题</Text>
         </View>
         <View className="ot-progress"><View className="ot-progress-fill" style={{ width: pct + '%' }} /></View>
diff --git a/miniprogram/src/pages/survey/index.config.js b/miniprogram/src/pages/survey/index.config.js
index 9dea222..01f5ddb 100644
--- a/miniprogram/src/pages/survey/index.config.js
+++ b/miniprogram/src/pages/survey/index.config.js
@@ -1 +1 @@
-export default { navigationBarTitleText: 'OPC 创业伙伴调研' };
+export default { navigationBarTitleText: 'OPC 创业伙伴调研', navigationStyle: 'custom' };
diff --git a/miniprogram/src/pages/survey/index.jsx b/miniprogram/src/pages/survey/index.jsx
index cf0dd6f..ca1a0f9 100644
--- a/miniprogram/src/pages/survey/index.jsx
+++ b/miniprogram/src/pages/survey/index.jsx
@@ -4,6 +4,7 @@ import { useState, useEffect } from 'react';
 import { getUser } from '@/utils/auth';
 import { request, cachedRequest } from '@/utils/api';
 import Skeleton from '@/components/skeleton';
+import { PageHeader } from '@/components/TopInset';
 import './index.scss';
 
 /* 题目/区域/Likert 由后端 /api/survey/questions 下发填充 */
@@ -113,11 +114,7 @@ export default function Survey() {
   if (stage === 'welcome') {
     return (
       <View className="sv page-in">
-        <View className="sv-head">
-          <Text className="sv-no">00</Text>
-          <Text className="sv-title">云南 OPC 创业伙伴调研</Text>
-          <Text className="sv-en">Survey</Text>
-        </View>
+        <PageHeader no="00" title="OPC 创业伙伴调研" en="Survey" back />
         <Text className="sv-intro">
           聊聊你在云南做的行业、遇到的难题、AI 赋能与政策诉求。共 {loaded ? SURVEY_QUESTIONS.length : '…'} 题，约 5–8 分钟，匿名提交，用于云南 OPC 创业生态建设与政策研究。
         </Text>
@@ -141,11 +138,7 @@ export default function Survey() {
   if (stage === 'done') {
     return (
       <View className="sv page-in">
-        <View className="sv-head">
-          <Text className="sv-no">06</Text>
-          <Text className="sv-title">提交成功，感谢参与！</Text>
-          <Text className="sv-en">Thank you</Text>
-        </View>
+        <PageHeader no="06" title="提交成功，感谢参与！" en="Thank you" back />
         <View className="sv-thanks">
           <Text>你的回答已匿名记录，将用于云南 OPC 创业生态建设与政策研究。我们正在组织 OPC 伙伴社群与调研回访，欢迎继续参与。</Text>
         </View>
@@ -165,9 +158,9 @@ export default function Survey() {
 
   return (
     <View className="sv">
+      <PageHeader no="01" title="创业伙伴调研" en="Quiz" back={() => { setStage('welcome'); scrollTop(); }} />
       <View className="sv-quiz-head">
         <View className="sv-quiz-top">
-          <Text className="sv-quiz-title">OPC 创业伙伴调研</Text>
           <Text className="sv-progress-text">{current + 1} / {SURVEY_QUESTIONS.length}</Text>
         </View>
         <View className="sv-progress"><View className="sv-progress-fill" style={{ width: pct + '%' }} /></View>
diff --git a/miniprogram/src/pages/test/index.jsx b/miniprogram/src/pages/test/index.jsx
index 0034045..5852af2 100644
--- a/miniprogram/src/pages/test/index.jsx
+++ b/miniprogram/src/pages/test/index.jsx
@@ -143,12 +143,9 @@ export default function Test() {
 
     return (
       <View className="ot quiz-center page-in">
+        <PageHeader no="01" title="OPC 创业基因测评" sub={version === 'quick' ? '快速版' : '完整版'} en="Assessment" back={backToWelcome} />
         <View className="ot-quiz-head">
           <View className="ot-quiz-top">
-            <View className="ot-quiz-left">
-              <View className="ot-back" onClick={backToWelcome}>‹ 返回</View>
-              <Text className="ot-quiz-title">OPC 创业基因测评<Text className="ot-quiz-tag">{version === 'quick' ? '快速版' : '完整版'}</Text></Text>
-            </View>
             <Text className="ot-progress-text">{current + 1} / {questions.length} 题</Text>
           </View>
           <View className="ot-progress"><View className="ot-progress-fill" style={{ width: pct + '%' }} /></View>
@@ -191,13 +188,8 @@ export default function Test() {
     const level = r.adaptLevel || {};
     return (
       <View className="ot page-in">
-        <TopInset />
-        {/* 头部：类型码 + 人设 + 适配指数 */}
-        <View className="ot-head">
-          <Text className="ot-no">02</Text>
-          <Text className="ot-title">你的 OPC 画像</Text>
-          <Text className="ot-en">Report</Text>
-        </View>
+        {/* 头部：类型码 + 人设 + 适配指数（复用统一标题区） */}
+        <PageHeader no="02" title="你的 OPC 画像" en="Report" back={backToWelcome} />
         <View className="ot-result-hero">
           <View className="ot-hero-left">
             <Text className="ot-code">{r.typeCode}</Text>