diff --git a/app/src/main/java/com/xiaoqu/watch/ui/home/HomeFragment.kt b/app/src/main/java/com/xiaoqu/watch/ui/home/HomeFragment.kt
index fb019f1..2025eb9 100644
--- a/app/src/main/java/com/xiaoqu/watch/ui/home/HomeFragment.kt
+++ b/app/src/main/java/com/xiaoqu/watch/ui/home/HomeFragment.kt
@@ -143,13 +143,9 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
             renderDots()
             return
         }
-        // 有未读通知 → 所有未 ack 的卡片显示红点
-        val ack = notificationManager.acknowledgedCards
-        activeDotCards.clear()
-        if (2 !in ack) activeDotCards.add(2)
-        if (3 !in ack) activeDotCards.add(3)
-        if (4 !in ack) activeDotCards.add(4)
-        renderDots()
+        // 有未读通知 → 用 preNotificationStats 精确对比
+        // onResume 时 view 可能重建，需要重新请求 API
+        fetchStatistics(checkDots = true)
     }
 
     override fun onDestroyView() {
@@ -362,22 +358,33 @@ class HomeFragment : BaseFragment<FragmentHomeBinding>() {
             if (result is ApiResult.Success && result.data != null) {
                 val data = result.data
 
-                // 有 pending 通知 → 所有未 ack 的卡片显示红点（不用 diffStats，避免竞态）
                 if (checkDots && notificationManager.pendingCount > 0) {
-                    val ack = notificationManager.acknowledgedCards
-                    if (2 !in ack) activeDotCards.add(2)
-                    if (3 !in ack) activeDotCards.add(3)
-                    if (4 !in ack) activeDotCards.add(4)
+                    // 用 preNotificationStats（通知前快照）做精确对比
+                    val baseline = notificationManager.preNotificationStats
+                    if (baseline != null) {
+                        val changed = notificationManager.diffStats(baseline, data)
+                        val ack = notificationManager.acknowledgedCards
+                        for (status in changed) {
+                            if (status !in ack) activeDotCards.add(status)
+                        }
+                    } else {
+                        // 无快照（极端情况）→ 所有有值的加红点
+                        val ack = notificationManager.acknowledgedCards
+                        if (data.waitForTask > 0 && 2 !in ack) activeDotCards.add(2)
+                        if (data.treatTask > 0 && 3 !in ack) activeDotCards.add(3)
+                        if (data.incompleteTask > 0 && 4 !in ack) activeDotCards.add(4)
+                    }
                     renderDots()
+                    // 有通知时不更新 lastStats，保留旧基准给后续 diff
+                } else {
+                    // 无通知的正常刷新 → 更新 lastStats 基准
+                    notificationManager.lastStats = data
                 }
 
                 // 更新数字
                 tvPoolNum.text = data.waitForTask.toString()
                 tvPunchNum.text = data.treatTask.toString()
                 tvCompleteNum.text = data.incompleteTask.toString()
-
-                // 保存为下次对比基准
-                notificationManager.lastStats = data
             }
         }
     }