diff --git a/client/lib/widgets/notification_bell.dart b/client/lib/widgets/notification_bell.dart
index e478d83..b0217d0 100644
--- a/client/lib/widgets/notification_bell.dart
+++ b/client/lib/widgets/notification_bell.dart
@@ -11,7 +11,9 @@ class NotificationBell extends StatelessWidget {
     final t = context.tokens;
     return PopupMenuButton<void>(
       tooltip: '通知',
-      offset: const Offset(0, 40),
+      // under 已定位在按钮正下方，只留小间隙贴着顶栏（大偏移在手机顶栏
+      // 加 safe-area inset 后会悬空漂进内容区——2026-07-04 用户反馈）
+      offset: const Offset(0, 8),
       position: PopupMenuPosition.under,
       shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
       color: t.surface,