diff --git a/apps/worker/video_processing/subtitle_render_engine.py b/apps/worker/video_processing/subtitle_render_engine.py
index fab753953..2895e568b 100755
--- a/apps/worker/video_processing/subtitle_render_engine.py
+++ b/apps/worker/video_processing/subtitle_render_engine.py
@@ -24,14 +24,8 @@
 from __future__ import annotations
 
 import logging
-from typing import Any
 from pathlib import Path
-
-from video_processing.path_security import (
-    PathSecurityError,
-    is_in_allowed_dirs,
-    safe_resolve_path,
-)
+from typing import Any
 
 from packages.domain.subtitle_style import (
     ALLOWED_SUBTITLE_EXTENSIONS,
@@ -40,11 +34,14 @@ from packages.domain.subtitle_style import (
     SubtitleSegment,
     SubtitleStyle,
 )
-from packages.domain.subtitle_style import (
-    escape_ass_text as _escape_ass_text,
-)  # noqa: F401  向后兼容导出
+from packages.domain.subtitle_style import escape_ass_text as _escape_ass_text  # noqa: F401  向后兼容导出
 from packages.domain.subtitle_style import format_ass_time as _format_ass_time
 from packages.domain.subtitle_style import wrap_text as _wrap_text
+from video_processing.path_security import (
+    PathSecurityError,
+    is_in_allowed_dirs,
+    safe_resolve_path,
+)
 
 logger = logging.getLogger(__name__)