diff --git a/track-uniapp/src/pages/scan/components/TaskTreeNode.vue b/track-uniapp/src/pages/scan/components/TaskTreeNode.vue
index 13b33fb..d471bbe 100644
--- a/track-uniapp/src/pages/scan/components/TaskTreeNode.vue
+++ b/track-uniapp/src/pages/scan/components/TaskTreeNode.vue
@@ -4,7 +4,7 @@
 
     <!-- 卡片 -->
     <view :class="['tnode-card', statusColor(task.status), { 'is-rework': task.is_rework }]">
-      <!-- 信息区 -->
+      <!-- 第一层：任务名称、标签、状态 Badge、负责人 -->
       <view class="tnode-body">
         <view class="tnode-name-row">
           <text v-if="task.is_rework" class="tag tag-rework">⚠返工</text>
@@ -15,39 +15,7 @@
           <text v-if="task.assignee_id">负责人: {{ task.assignee_id }}</text>
           <text v-if="task.reject_reason" class="reject-reason">驳回: {{ task.reject_reason }}</text>
         </view>
-
-        <!-- 进度记录 — 只展示最新一条 + 查看全部入口 -->
-        <view v-if="task.records && task.records.length" class="records-area">
-          <!-- 查看全部记录按钮 -->
-          <view class="records-bar" @tap.stop="$emit('viewRecords', task)">
-            <text class="records-bar-icon">📋</text>
-            <text class="records-bar-text">查看全部记录 ({{ task.records.length }})</text>
-            <text class="records-bar-arrow">›</text>
-          </view>
-          <!-- 最新一条预览 -->
-          <view class="record-item">
-            <view class="record-top">
-              <text class="record-time">{{ formatTime(task.records[0].created_at) }}</text>
-              <view v-if="canEditRecord" class="record-actions">
-                <text class="rec-act" @tap.stop="$emit('editRecord', { task, record: task.records[0] })">✏️</text>
-                <text class="rec-act" @tap.stop="confirmDelete(task.records[0])">🗑️</text>
-              </view>
-            </view>
-            <text v-if="task.records[0].remark" class="record-remark">{{ task.records[0].remark }}</text>
-            <view v-if="task.records[0].images && task.records[0].images.length" class="record-images">
-              <image
-                v-for="(img, i) in task.records[0].images"
-                :key="i"
-                :src="imageUrl(img)"
-                class="record-thumb"
-                mode="aspectFill"
-                @tap.stop="previewImage(task.records[0].images, i)"
-              />
-            </view>
-          </view>
-        </view>
       </view>
-
       <!-- 状态标签 -->
       <text :class="['badge', statusColor(task.status)]">{{ statusLabel(task.status) }}</text>
     </view>
@@ -64,7 +32,7 @@
         @tap.stop="$emit('action', { task, type: 'record' })">📝 记录/拍照</button>
     </view>
 
-    <!-- 递归子树 -->
+    <!-- 第二层：递归子任务树 -->
     <view v-if="task.child_tasks && task.child_tasks.length" class="tnode-children">
       <TaskTreeNode
         v-for="(child, idx) in task.child_tasks"
@@ -79,6 +47,37 @@
         @viewRecords="(t) => $emit('viewRecords', t)"
       />
     </view>
+
+    <!-- 第三层（最底部）：进度记录 — 最新一条 + 查看全部入口 -->
+    <view v-if="task.records && task.records.length" class="records-area">
+      <!-- 查看全部记录按钮 -->
+      <view class="records-bar" @tap.stop="$emit('viewRecords', task)">
+        <text class="records-bar-icon">📋</text>
+        <text class="records-bar-text">查看全部记录 ({{ task.records.length }})</text>
+        <text class="records-bar-arrow">›</text>
+      </view>
+      <!-- 最新一条预览 -->
+      <view class="record-item">
+        <view class="record-top">
+          <text class="record-time">{{ formatTime(task.records[0].created_at) }}</text>
+          <view v-if="canEditRecord" class="record-actions">
+            <text class="rec-act" @tap.stop="$emit('editRecord', { task, record: task.records[0] })">✏️</text>
+            <text class="rec-act" @tap.stop="confirmDelete(task.records[0])">🗑️</text>
+          </view>
+        </view>
+        <text v-if="task.records[0].remark" class="record-remark">{{ task.records[0].remark }}</text>
+        <view v-if="task.records[0].images && task.records[0].images.length" class="record-images">
+          <image
+            v-for="(img, i) in task.records[0].images"
+            :key="i"
+            :src="imageUrl(img)"
+            class="record-thumb"
+            mode="aspectFill"
+            @tap.stop="previewImage(task.records[0].images, i)"
+          />
+        </view>
+      </view>
+    </view>
   </view>
 </template>
 
diff --git a/track-uniapp/src/pages/scan/detail.vue b/track-uniapp/src/pages/scan/detail.vue
index 5cb3f4c..79fb6a7 100644
--- a/track-uniapp/src/pages/scan/detail.vue
+++ b/track-uniapp/src/pages/scan/detail.vue
@@ -1,5 +1,5 @@
 <template>
-  <view class="page">
+  <view class="page-container">
     <!-- ======== 加载/错误 ======== -->
     <view v-if="loading" class="loading">加载中...</view>
     <view v-if="error" class="error-box">{{ error }}</view>
@@ -56,13 +56,13 @@
       <!-- ================================================================ -->
       <!-- 任务树（撑满剩余空间，可滚动） -->
       <!-- ================================================================ -->
-      <view class="card card-tree">
-        <view class="card-header">
-          <text class="card-title">🌿 任务流转树</text>
-          <text class="task-count">{{ countTasks(product.task_tree) }} 个任务</text>
-        </view>
+      <view class="tree-scroll-area">
+        <view class="card card-tree">
+          <view class="card-header">
+            <text class="card-title">🌿 任务流转树</text>
+            <text class="task-count">{{ countTasks(product.task_tree) }} 个任务</text>
+          </view>
 
-        <view class="tree-scroll">
           <!-- 0任务 → 发起首道工序 -->
           <view v-if="!product.task_tree || !product.task_tree.length" class="zero-task">
             <text class="zero-icon">📋</text>
@@ -86,6 +86,24 @@
           />
         </view>
       </view>
+
+      <!-- ================================================================ -->
+      <!-- 底部操作栏（钉死，不随滚动） -->
+      <!-- ================================================================ -->
+      <view v-if="activeTask" class="footer-actions">
+        <button v-if="activeTask.status === 'WIP'" class="footer-btn footer-transfer"
+          @tap="handleTaskAction({ task: activeTask, type: 'transfer' })">
+          🔄 完工转交
+        </button>
+        <button v-if="activeTask.status === 'WIP'" class="footer-btn footer-record"
+          @tap="handleTaskAction({ task: activeTask, type: 'record' })">
+          📝 记录/拍照
+        </button>
+        <button v-if="activeTask.status === 'PENDING'" class="footer-btn footer-receive"
+          @tap="handleTaskAction({ task: activeTask, type: 'receive' })">
+          ✅ 接收任务
+        </button>
+      </view>
     </template>
 
     <!-- ================================================================ -->
@@ -335,6 +353,21 @@ export default {
       const u = this.userOptions.find(u => u.id === this.transferForm.selectedUserId);
       return u ? u.name : "";
     },
+    activeTask() {
+      // 查找树中第一个 WIP 或 PENDING 任务作为底部 Footer 的操作目标
+      const findActive = (tasks) => {
+        if (!tasks) return null;
+        for (const t of tasks) {
+          if (t.status === 'WIP' || t.status === 'PENDING') return t;
+          if (t.child_tasks && t.child_tasks.length) {
+            const found = findActive(t.child_tasks);
+            if (found) return found;
+          }
+        }
+        return null;
+      };
+      return this.product ? findActive(this.product.task_tree) : null;
+    },
   },
   onLoad(options) {
     this.loadUsers();
@@ -661,7 +694,7 @@ export default {
 </script>
 
 <style scoped>
-.page { height: 100vh; display: flex; flex-direction: column; padding: 16px; padding-bottom: 0; overflow: hidden; box-sizing: border-box; }
+.page-container { height: 100vh; display: flex; flex-direction: column; background-color: #f3f4f6; box-sizing: border-box; padding: 16px; padding-bottom: 0; overflow: hidden; }
 .loading { text-align: center; padding: 48px 0; color: #6b7280; }
 .error-box { padding: 12px; border-radius: 10px; background: #fef2f2; color: #dc2626; font-size: 13px; border: 1px solid #fecaca; }
 
@@ -675,10 +708,10 @@ export default {
 
 /* 卡片 */
 .card { background: #fff; border-radius: 12px; padding: 14px; margin-bottom: 12px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); flex-shrink: 0; }
-/* 任务树卡片 → 撑满剩余空间 */
-.card-tree { flex: 1; display: flex; flex-direction: column; min-height: 0; margin-bottom: 0; overflow: hidden; }
+/* 任务树滚动区域 → 撑满剩余空间 */
+.tree-scroll-area { flex: 1; overflow-y: auto; min-height: 0; -webkit-overflow-scrolling: touch; }
+.card-tree { margin-bottom: 0; }
 .card-tree .card-header { flex-shrink: 0; }
-.tree-scroll { flex: 1; overflow-y: auto; min-height: 0; -webkit-overflow-scrolling: touch; }
 .card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
 .card-header-right { display: flex; align-items: center; gap: 8px; }
 .card-title { font-size: 15px; font-weight: 700; }
@@ -762,6 +795,17 @@ export default {
   background: #f9fafb; color: #6b7280; font-size: 14px; line-height: 42px; margin: 8px 0; }
 .btn-upload[disabled] { opacity: 0.5; }
 
+/* 底部操作栏 (钉死在屏幕最下方) */
+.footer-actions {
+  display: flex; gap: 20rpx; padding: 20rpx 30rpx; padding-bottom: calc(20rpx + env(safe-area-inset-bottom));
+  background: #ffffff; box-shadow: 0 -2rpx 10rpx rgba(0,0,0,0.05); z-index: 99; flex-shrink: 0;
+}
+.footer-btn { flex: 1; height: 88rpx; border: none; border-radius: 12rpx; font-size: 30rpx; font-weight: 700; line-height: 88rpx; }
+.footer-btn::after { border: none; }
+.footer-transfer { background: #dcfce7; color: #16a34a; }
+.footer-record { background: #eff6ff; color: #2563eb; }
+.footer-receive { background: #dbeafe; color: #1d4ed8; }
+
 /* Picker 选择器 */
 .form-item { margin: 10px 0; }
 .form-label { font-size: 14px; font-weight: 600; color: #374151; display: block; margin-bottom: 4px; }