diff --git a/apps/api/app/api/routes/lipsync.py b/apps/api/app/api/routes/lipsync.py
index eb045be7a..dd4d4b125 100644
--- a/apps/api/app/api/routes/lipsync.py
+++ b/apps/api/app/api/routes/lipsync.py
@@ -195,7 +195,8 @@ def get_lipsync_job(
     if job.status not in ("completed", "failed"):
         # 三层防御 ①：如果距上次更新超过 30 秒，同步刷新一次（避免 background task
         # 静默失败导致前端永远看到 running）；否则挂后台异步刷新（避免阻塞轮询）。
-        from datetime import datetime as _dt, timezone as _tz
+        from datetime import datetime as _dt
+        from datetime import timezone as _tz
 
         _now = _dt.now(_tz.utc)
         _stale = job.updated_at is None or (_now - job.updated_at).total_seconds() > 30
diff --git a/apps/api/app/tasks/lipsync_tts.py b/apps/api/app/tasks/lipsync_tts.py
index 109899582..3e106fd60 100644
--- a/apps/api/app/tasks/lipsync_tts.py
+++ b/apps/api/app/tasks/lipsync_tts.py
@@ -347,7 +347,8 @@ def poll_mediakit_status(self, job_id: str, user_id: str):
             logger.warning("[lipsync_poll] Job has no mediakit_task_id: job_id=%s status=%s", job_id, job.status)
             return
 
-        from app.services.lipsync_service import STATUS_COMPLETED as _SC, STATUS_FAILED as _SF
+        from app.services.lipsync_service import STATUS_COMPLETED as _SC
+        from app.services.lipsync_service import STATUS_FAILED as _SF
         from app.services.lipsync_service import LipsyncService
         from app.services.mediakit_client import MediaKitError, get_mediakit_client