diff --git a/app/Console/Commands/CloseStaleDutyLogs.php b/app/Console/Commands/CloseStaleDutyLogs.php
index a136105..4e98e20 100644
--- a/app/Console/Commands/CloseStaleDutyLogs.php
+++ b/app/Console/Commands/CloseStaleDutyLogs.php
@@ -50,6 +50,8 @@ class CloseStaleDutyLogs extends Command
             ->where('updated_at', '<=', $threshold)
             ->update([
                 'logout_at' => DB::raw('NOW()'),
+                // 补算最终在线时长，避免日榜 SUM 使用过时的旧值
+                'duration_seconds' => DB::raw('GREATEST(0, TIMESTAMPDIFF(SECOND, login_at, NOW()))'),
             ]);
 
         if ($affected > 0) {
diff --git a/app/Http/Controllers/DutyHallController.php b/app/Http/Controllers/DutyHallController.php
index 910fa71..ab69b04 100644
--- a/app/Http/Controllers/DutyHallController.php
+++ b/app/Http/Controllers/DutyHallController.php
@@ -50,7 +50,17 @@ class DutyHallController extends Controller
 
             // ① 在线时长（position_duty_logs）
             $dutyQuery = PositionDutyLog::query()
-                ->selectRaw('user_id, SUM(duration_seconds) as total_seconds, COUNT(*) as checkin_count');
+                ->selectRaw('
+                    user_id,
+                    SUM(
+                        CASE
+                            WHEN logout_at IS NULL
+                            THEN GREATEST(0, TIMESTAMPDIFF(SECOND, login_at, NOW()))
+                            ELSE duration_seconds
+                        END
+                    ) as total_seconds,
+                    COUNT(*) as checkin_count
+                ');
 
             // ② 管理操作（position_authority_logs，排除任命/撤销等人事操作）
             $authQuery = PositionAuthorityLog::query()