diff --git a/pages/sub/activity/detail.vue b/pages/sub/activity/detail.vue
index 2a416e0..7e05b0c 100644
--- a/pages/sub/activity/detail.vue
+++ b/pages/sub/activity/detail.vue
@@ -11,15 +11,15 @@
 
       <!-- Tab 切换栏 -->
       <view class="tab-bar">
-        <view 
-          class="tab-item" 
+        <view
+          class="tab-item"
           :class="{ active: currentTab === 'basic' }"
           @tap="currentTab = 'basic'"
         >
           <text class="tab-text">基本信息</text>
         </view>
-        <view 
-          class="tab-item" 
+        <view
+          class="tab-item"
           :class="{ active: currentTab === 'intro' }"
           @tap="currentTab = 'intro'"
         >
@@ -27,8 +27,8 @@
         </view>
       </view>
 
-      <!-- 内容区域 - 独立滚动 -->
-      <scroll-view class="detail-scroll" scroll-y :style="{ height: scrollViewHeight + 'px' }">
+      <!-- 内容区域 - 滚动 -->
+      <scroll-view class="detail-scroll" scroll-y>
         <view class="detail-content">
           <!-- 基本信息 -->
           <template v-if="currentTab === 'basic'">
@@ -46,9 +46,9 @@
             <view class="info-row tag-row">
               <text class="label-text">服务类别：</text>
               <view class="tag-list">
-                <text 
-                  class="tag-item" 
-                  v-for="(tag, index) in activityInfo.serviceTypes" 
+                <text
+                  class="tag-item"
+                  v-for="(tag, index) in activityInfo.serviceTypes"
                   :key="index"
                 >{{ tag }}</text>
               </view>
@@ -58,9 +58,9 @@
             <view class="info-row tag-row">
               <text class="label-text">服务对象：</text>
               <view class="tag-list">
-                <text 
+                <text
                   class="tag-item target-tag"
-                  v-for="(tag, index) in activityInfo.targetAudience" 
+                  v-for="(tag, index) in activityInfo.targetAudience"
                   :key="index"
                 >{{ tag }}</text>
               </view>
@@ -119,15 +119,12 @@
 </template>
 
 <script setup>
-import { ref, onMounted, nextTick, getCurrentInstance } from 'vue';
+import { ref } from 'vue';
 import { onLoad } from '@dcloudio/uni-app';
 
 // 当前Tab
 const currentTab = ref('basic');
 
-// 列表滚动区域高度（单位：px）
-const scrollViewHeight = ref(0);
-
 // 活动详情数据
 const activityInfo = ref({
   id: null,
@@ -152,24 +149,6 @@ onLoad((options) => {
   }
 });
 
-// 渲染完成后计算scroll-view高度
-onMounted(() => {
-  const instance = getCurrentInstance();
-  nextTick(() => {
-    const sysInfo = uni.getSystemInfoSync();
-    uni.createSelectorQuery()
-      .in(instance)
-      .select('.tab-bar')
-      .boundingClientRect((rect) => {
-        if (rect) {
-          // scroll-view高度 = 屏幕可用高度 - tab栏高度 - tab栏距顶部距离 - 底部按钮高度(120rpx)
-          scrollViewHeight.value = sysInfo.windowHeight - rect.height - rect.top - 60;
-        }
-      })
-      .exec();
-  });
-});
-
 // 加载活动详情
 async function loadActivityDetail(id) {
   // TODO: 调用API获取活动详情
@@ -224,16 +203,20 @@ function goBack() {
 </script>
 
 <style lang="scss" scoped>
-/* 页面容器 */
+/* 页面容器：纵向 flex 布局，减去导航栏高度 */
 .activity-detail-page {
   position: relative;
-  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  height: calc(100vh - 176rpx);
+  overflow: hidden;
 }
 
 /* 顶部Banner轮播 */
 .banner-swiper {
   width: 100%;
   height: 400rpx;
+  flex-shrink: 0;
 }
 
 .banner-img {
@@ -249,6 +232,7 @@ function goBack() {
   background-color: #FFFFFF;
   padding: 0 32rpx;
   border-bottom: 1rpx solid #F0F0F0;
+  flex-shrink: 0;
 
   .tab-item {
     flex: 1;
@@ -284,9 +268,12 @@ function goBack() {
   }
 }
 
-/* 内容滚动区域 */
+/* 内容滚动区域：flex:1 占满剩余空间，height:0 是小程序 scroll-view 配合 flex 的关键 */
 .detail-scroll {
-  /* 高度由JS动态绑定 */
+  position: relative;
+  z-index: 5;
+  flex: 1;
+  height: 0;
 }
 
 /* 详情内容 */
@@ -387,7 +374,7 @@ function goBack() {
 /* 联系人行 */
 .contact-row {
   align-items: center;
-  
+
   &:active {
     opacity: 0.7;
   }
@@ -410,9 +397,9 @@ function goBack() {
   padding: 32rpx;
 }
 
-/* 底部占位 */
+/* 底部占位：基础间距 + 安全区域 */
 .bottom-placeholder {
-  height: 140rpx;
+  height: calc(140rpx + env(safe-area-inset-bottom));
 }
 
 /* 底部固定按钮栏 */
diff --git a/pages/sub/knowledge/detail.vue b/pages/sub/knowledge/detail.vue
index 6ac47f0..a6387aa 100644
--- a/pages/sub/knowledge/detail.vue
+++ b/pages/sub/knowledge/detail.vue
@@ -5,41 +5,41 @@
       <!-- 渐变背景 -->
       <view class="gradient-bg"></view>
 
-      <!-- 固定头部区域（标题+发布信息） -->
-    <view class="detail-header">
-      <view class="header-inner">
-        <!-- 标题 -->
-        <view class="detail-title">
-          <text class="title-text">{{ detailInfo.title }}</text>
-        </view>
+      <!-- 头部区域（标题+发布信息） -->
+      <view class="detail-header">
+        <view class="header-inner">
+          <!-- 标题 -->
+          <view class="detail-title">
+            <text class="title-text">{{ detailInfo.title }}</text>
+          </view>
 
-        <!-- 发布信息 -->
-        <view class="publish-info">
-          <text class="community-name">{{ detailInfo.viewCount || 0 }}次浏览</text>
-          <text class="publish-date">{{ detailInfo.publishDate ? sheep.$helper.timeFormat(detailInfo.publishDate, 'yyyy年mm月dd日 hh:MM') : '' }}</text>
-        </view>
+          <!-- 发布信息 -->
+          <view class="publish-info">
+            <text class="community-name">{{ detailInfo.viewCount || 0 }}次浏览</text>
+            <text class="publish-date">{{ detailInfo.publishDate ? sheep.$helper.timeFormat(detailInfo.publishDate, 'yyyy年mm月dd日 hh:MM') : '' }}</text>
+          </view>
 
-        <!-- 分割线 -->
-        <view class="divider"></view>
-      </view>
-    </view>
-
-    <!-- 富文本内容 - 固定滚动区域 -->
-    <scroll-view class="content-scroll" scroll-y :style="{ height: scrollHeight + 'px', top: scrollTop + 'px' }">
-      <view class="content-card">
-        <view class="content-inner">
-          <mp-html :content="detailInfo.content"></mp-html>
+          <!-- 分割线 -->
+          <view class="divider"></view>
         </view>
       </view>
-      <!-- 底部占位 -->
-      <view class="bottom-placeholder"></view>
-    </scroll-view>
+
+      <!-- 富文本内容 - 滚动区域 -->
+      <scroll-view class="content-scroll" scroll-y>
+        <view class="content-card">
+          <view class="content-inner">
+            <mp-html :content="detailInfo.content"></mp-html>
+          </view>
+        </view>
+        <!-- 底部占位 -->
+        <view class="bottom-placeholder"></view>
+      </scroll-view>
     </view>
   </s-layout>
 </template>
 
 <script setup>
-import { ref, onMounted, nextTick, getCurrentInstance } from 'vue';
+import { ref } from 'vue';
 import { onLoad } from '@dcloudio/uni-app';
 import KnowledgeApi from '@/sheep/api/community/knowledge';
 import sheep from '@/sheep';
@@ -52,11 +52,6 @@ const detailInfo = ref({
   content: '',
 });
 
-// 滚动区域高度
-const scrollHeight = ref(0);
-// 滚动区域距离顶部距离
-const scrollTop = ref(0);
-
 // 页面加载
 onLoad((options) => {
   if (options.id) {
@@ -64,30 +59,6 @@ onLoad((options) => {
   }
 });
 
-// 计算scroll-view高度和位置
-const calcScrollHeight = () => {
-  const instance = getCurrentInstance();
-  nextTick(() => {
-    const sysInfo = uni.getSystemInfoSync();
-    const query = uni.createSelectorQuery().in(instance);
-
-    // 获取头部区域高度和位置
-    query.select('.detail-header').boundingClientRect();
-    query.exec((res) => {
-      const headerRect = res[0];
-      if (headerRect) {
-        const safeBottom = sysInfo.safeAreaInsets?.bottom || 0;
-        scrollTop.value = headerRect.height + headerRect.top;
-        scrollHeight.value = sysInfo.windowHeight - scrollTop.value - safeBottom;
-      }
-    });
-  });
-};
-
-onMounted(() => {
-  calcScrollHeight();
-});
-
 // 加载详情
 async function loadDetail(id) {
   const { code, data } = await KnowledgeApi.getDetail(id);
@@ -98,17 +69,18 @@ async function loadDetail(id) {
       publishDate: data.createTime || '',
       content: data.content || '',
     };
-
-    setTimeout(calcScrollHeight, 100);
   }
 }
 </script>
 
 <style lang="scss" scoped>
-/* 页面容器 */
+/* 页面容器：纵向 flex 布局，减去导航栏高度 */
 .detail-page {
   position: relative;
-  z-index: 1;
+  display: flex;
+  flex-direction: column;
+  height: calc(100vh - 176rpx);
+  overflow: hidden;
 }
 
 /* 渐变背景 */
@@ -123,13 +95,11 @@ async function loadDetail(id) {
   pointer-events: none;
 }
 
-/* 固定头部区域 */
+/* 头部区域：正常文档流 */
 .detail-header {
-  position: fixed;
-  left: 0;
-  width: 100%;
+  position: relative;
   z-index: 10;
-  background: transparent;
+  flex-shrink: 0;
 }
 
 .header-inner {
@@ -177,12 +147,12 @@ async function loadDetail(id) {
   margin-bottom: 32rpx;
 }
 
-/* 内容滚动区域 - 固定定位 */
+/* 内容滚动区域：flex:1 占满剩余空间，height:0 是小程序 scroll-view 配合 flex 的关键 */
 .content-scroll {
-  position: fixed;
-  left: 0;
-  width: 100%;
+  position: relative;
   z-index: 5;
+  flex: 1;
+  height: 0;
 }
 
 /* 内容卡片 */
@@ -209,8 +179,8 @@ async function loadDetail(id) {
   }
 }
 
-/* 底部占位 */
+/* 底部占位：基础间距 + 安全区域 */
 .bottom-placeholder {
-  height: 40rpx;
+  height: calc(40rpx + env(safe-area-inset-bottom));
 }
 </style>
diff --git a/pages/sub/notice/detail.vue b/pages/sub/notice/detail.vue
index 0583c0b..2854b5e 100644
--- a/pages/sub/notice/detail.vue
+++ b/pages/sub/notice/detail.vue
@@ -4,72 +4,67 @@
     <view class="detail-page">
       <!-- 渐变背景 -->
       <view class="gradient-bg"></view>
-      
-      <!-- 固定头部区域 -->
-    <view class="detail-header">
-      <view class="header-inner">
-        <!-- 文章标题 -->
-        <view class="article-title">
-          <text class="title-text">{{ noticeInfo.title }}</text>
-        </view>
 
-        <!-- 发布信息 -->
-        <view class="publish-info">
-          <view class="publisher">
-            <image class="publisher-avatar" src="/static/img/person.png" mode="aspectFill" />
-            <text class="publisher-name">{{ noticeInfo.publisher }}</text>
+      <!-- 头部区域 -->
+      <view class="detail-header">
+        <view class="header-inner">
+          <!-- 文章标题 -->
+          <view class="article-title">
+            <text class="title-text">{{ noticeInfo.title }}</text>
           </view>
-          <text class="publish-date">{{ noticeInfo.publishDate ? sheep.$helper.timeFormat(noticeInfo.publishDate, 'yyyy/mm/dd hh:MM:ss') : '' }}</text>
-        </view>
 
-        <!-- 分割线 -->
-        <view class="divider"></view>
-      </view>
-    </view>
-
-    <!-- 富文本内容 - 独立滚动区域 -->
-    <scroll-view class="article-scroll" scroll-y :style="{ height: contentScrollHeight + 'px', top: contentScrollTop + 'px' }">
-      <view class="article-content">
-        <view class="article-inner">
-          <mp-html :content="noticeInfo.content"></mp-html>
-        </view>
-      </view>
-      <!-- 占位，防止内容被底部附件遮挡 -->
-      <view class="bottom-placeholder" v-if="noticeInfo.attachmentList && noticeInfo.attachmentList.length > 0"></view>
-    </scroll-view>
-
-    <!-- 附件列表 - 动态高度，随内容撑开 -->
-    <view class="attachment-section" v-if="noticeInfo.attachmentList && noticeInfo.attachmentList.length > 0">
-      <view class="attachment-inner">
-        <view 
-          class="attachment-item" 
-          v-for="(item, index) in noticeInfo.attachmentList" 
-          :key="index"
-          @tap="downloadAttachment(item)"
-        >
-          <view class="attachment-left">
-            <image class="attachment-icon" :src="getAttachmentIcon(item.type)" mode="aspectFit" />
-            <text class="attachment-name">{{ item.name }}</text>
+          <!-- 发布信息 -->
+          <view class="publish-info">
+            <view class="publisher">
+              <image class="publisher-avatar" src="/static/img/person.png" mode="aspectFill" />
+              <text class="publisher-name">{{ noticeInfo.publisher }}</text>
+            </view>
+            <text class="publish-date">{{ noticeInfo.publishDate ? sheep.$helper.timeFormat(noticeInfo.publishDate, 'yyyy/mm/dd hh:MM:ss') : '' }}</text>
+          </view>
+
+          <!-- 分割线 -->
+          <view class="divider"></view>
+        </view>
+      </view>
+
+      <!-- 富文本内容 - 滚动区域 -->
+      <scroll-view class="article-scroll" scroll-y>
+        <view class="article-content">
+          <view class="article-inner">
+            <mp-html :content="noticeInfo.content"></mp-html>
+          </view>
+        </view>
+        <!-- 占位，防止内容被底部附件遮挡 -->
+        <view class="bottom-placeholder" v-if="noticeInfo.attachmentList && noticeInfo.attachmentList.length > 0"></view>
+      </scroll-view>
+
+      <!-- 附件列表 -->
+      <view class="attachment-section" v-if="noticeInfo.attachmentList && noticeInfo.attachmentList.length > 0">
+        <view class="attachment-inner">
+          <view
+            class="attachment-item"
+            v-for="(item, index) in noticeInfo.attachmentList"
+            :key="index"
+            @tap="downloadAttachment(item)"
+          >
+            <view class="attachment-left">
+              <image class="attachment-icon" :src="getAttachmentIcon(item.type)" mode="aspectFit" />
+              <text class="attachment-name">{{ item.name }}</text>
+            </view>
+            <image class="download-icon" src="/static/img/right-icon.png" mode="aspectFit" />
           </view>
-          <image class="download-icon" src="/static/img/right-icon.png" mode="aspectFit" />
         </view>
       </view>
-    </view>
     </view>
   </s-layout>
 </template>
 
 <script setup>
-import { ref, onMounted, nextTick, getCurrentInstance, watch } from 'vue';
+import { ref } from 'vue';
 import { onLoad } from '@dcloudio/uni-app';
 import NoticeApi from '@/sheep/api/community/notice';
 import sheep from '@/sheep';
 
-// 富文本滚动区域高度（单位：px）
-const contentScrollHeight = ref(0);
-// 富文本滚动区域距离顶部的距离（单位：px）
-const contentScrollTop = ref(0);
-
 // 公告信息
 const noticeInfo = ref({
   title: '',
@@ -86,48 +81,6 @@ onLoad((options) => {
   }
 });
 
-// 计算scroll-view高度和位置
-const calcScrollHeight = () => {
-  const instance = getCurrentInstance();
-  nextTick(() => {
-    const sysInfo = uni.getSystemInfoSync();
-    const query = uni.createSelectorQuery().in(instance);
-
-    // 获取头部高度和位置
-    query.select('.detail-header').boundingClientRect();
-    // 获取附件区域高度（如果存在）
-    query.select('.attachment-section').boundingClientRect();
-
-    query.exec((res) => {
-      const headerRect = res[0];
-      const attachmentRect = res[1];
-
-      let attachmentHeight = 0;
-      if (attachmentRect && attachmentRect.height > 0) {
-        attachmentHeight = attachmentRect.height;
-      }
-
-      if (headerRect) {
-        // scroll-view距离顶部 = 头部高度 + 头部距离顶部距离（已包含状态栏和导航栏高度）
-        contentScrollTop.value = headerRect.height + headerRect.top;
-        // scroll-view高度 = 屏幕可用高度 - scroll-view距离顶部 - 附件高度 - 底部安全区
-        const safeBottom = sysInfo.safeAreaInsets?.bottom || 0;
-        contentScrollHeight.value = sysInfo.windowHeight - contentScrollTop.value - attachmentHeight - safeBottom;
-      }
-    });
-  });
-};
-
-// 渲染完成后计算
-onMounted(() => {
-  calcScrollHeight();
-});
-
-// 数据加载完成后重新计算（附件异步加载）
-watch(() => noticeInfo.value.attachmentList, () => {
-  setTimeout(calcScrollHeight, 100);
-}, { deep: true });
-
 // 加载公告详情
 async function loadNoticeDetail(id) {
   const { code, data } = await NoticeApi.getDetail(id);
@@ -143,8 +96,6 @@ async function loadNoticeDetail(id) {
         type: getFileType(item.name),
       })),
     };
-    // 数据加载后重新计算scroll-view高度
-    setTimeout(calcScrollHeight, 100);
   }
 }
 
@@ -248,10 +199,13 @@ function downloadAttachment(item) {
 </script>
 
 <style lang="scss" scoped>
-/* 页面容器 */
+/* 页面容器：纵向 flex 布局，减去导航栏高度 */
 .detail-page {
   position: relative;
-  z-index: 1;
+  display: flex;
+  flex-direction: column;
+  height: calc(100vh - 176rpx);
+  overflow: hidden;
 }
 
 /* 渐变背景 */
@@ -266,22 +220,20 @@ function downloadAttachment(item) {
   pointer-events: none;
 }
 
-/* 固定头部区域（标题+发布信息） */
+/* 头部区域：正常文档流 */
 .detail-header {
-  position: fixed;
-  left: 0;
-  width: 750rpx;
+  position: relative;
   z-index: 10;
-  background: transparent;
+  flex-shrink: 0;
 }
 
 .header-inner {
   padding: 0 32rpx;
 }
 
-/* 底部占位 - 根据附件数量动态调整 */
+/* 底部占位 - 基础间距 + 安全区域 */
 .bottom-placeholder {
-  height: 40rpx;
+  height: calc(40rpx + env(safe-area-inset-bottom));
 }
 
 /* 文章标题 */
@@ -310,7 +262,6 @@ function downloadAttachment(item) {
     .publisher-avatar {
       width: 48rpx;
       height: 48rpx;
-      // border-radius: 50%;
       margin-right: 16rpx;
     }
 
@@ -333,25 +284,22 @@ function downloadAttachment(item) {
   margin-bottom: 32rpx;
 }
 
-/* 富文本滚动区域 - 高度由JS动态绑定 */
+/* 富文本滚动区域：flex:1 占满剩余空间，height:0 是小程序 scroll-view 配合 flex 的关键 */
 .article-scroll {
-  position: fixed;
-  left: 0;
-  width: 100%;
+  position: relative;
   z-index: 5;
+  flex: 1;
+  height: 0;
 }
 
 /* 富文本内容 - 圆角背景卡片 */
 .article-content {
   margin: 0 32rpx;
   border-radius: 24rpx;
-  // background-color: #FFFFFF;
 }
 
-/* 富文本内容内层 - 控制padding */
+/* 富文本内容内层 */
 .article-inner {
-  // padding: 32rpx;
-
   :deep(p) {
     font-size: 28rpx;
     color: #333333;
@@ -366,12 +314,9 @@ function downloadAttachment(item) {
   }
 }
 
-/* 附件区域 - 动态高度，最多显示3个附件 */
+/* 附件区域 */
 .attachment-section {
-  position: fixed;
-  bottom: 0;
-  left: 0;
-  width: 100%;
+  flex-shrink: 0;
   max-height: 360rpx;
   background: #FFFFFF;
   box-shadow: 0rpx -8rpx 64rpx 0rpx rgba(0, 0, 0, 0.16);