diff --git a/client/src/manifest.json b/client/src/manifest.json
index 3273520..93b0fe0 100644
--- a/client/src/manifest.json
+++ b/client/src/manifest.json
@@ -1,7 +1,7 @@
 {
   "name": "宇之然AI维度",
   "appid": "wxdad62baf4ccd09e3",
-  "versionName": "1.4.6",
+  "versionName": "1.4.7",
   "versionCode": "100",
   "description": "AI 知识探索社区 — 从5个维度系统理解人工智能",
   "uni-app": {
diff --git a/client/src/pages/settings/settings.vue b/client/src/pages/settings/settings.vue
index 4c7e091..978e125 100644
--- a/client/src/pages/settings/settings.vue
+++ b/client/src/pages/settings/settings.vue
@@ -20,6 +20,7 @@
           <view class="s-switch-knob" :class="{ on: pushOn }"></view>
         </view>
       </view>
+      <!-- #ifdef H5 -->
       <view class="setting-item" @click="toggleDarkMode">
         <view class="s-icon" style="background:rgba(77,208,225,0.1);color:#4dd0e1">🌙</view>
         <view class="s-text">
@@ -30,6 +31,17 @@
           <view class="s-switch-knob" :class="{ on: darkMode }"></view>
         </view>
       </view>
+      <!-- #endif -->
+      <!-- #ifdef MP-WEIXIN -->
+      <view class="setting-item" @click="showDarkTip">
+        <view class="s-icon" style="background:rgba(77,208,225,0.1);color:#4dd0e1">🌙</view>
+        <view class="s-text">
+          <text class="s-label">深色模式</text>
+          <text class="s-desc">跟随系统设置自动切换</text>
+        </view>
+        <text class="s-arrow">›</text>
+      </view>
+      <!-- #endif -->
     </view>
 
     <!-- 其他 -->
@@ -85,6 +97,14 @@ function togglePush() {
   })
 }
 
+function showDarkTip() {
+  uni.showModal({
+    title: '深色模式',
+    content: '小程序深色模式跟随系统：在手机的 系统设置 → 显示与亮度 中切换深色/浅色，小程序将自动适配。',
+    showCancel: false,
+  })
+}
+
 function toggleDarkMode() {
   darkMode.value = !darkMode.value
   const theme = darkMode.value ? 'dark' : 'light'