diff --git a/src/views/flow/admin/def-editor/bpmn/custom.ts b/src/views/flow/admin/def-editor/bpmn/custom.ts
index c696e63..98b6997 100644
--- a/src/views/flow/admin/def-editor/bpmn/custom.ts
+++ b/src/views/flow/admin/def-editor/bpmn/custom.ts
@@ -7,6 +7,10 @@
  */
 import Modeler from "bpmn-js/lib/Modeler";
 import PaletteProvider from "bpmn-js/lib/features/palette/PaletteProvider";
+// 必需：diagram-js 画布/连线/调色板样式 + bpmn 字体图标；漏引会导致连线变黑条、黑锚点外露、左侧工具栏不可见
+import "diagram-js/assets/diagram-js.css";
+import "bpmn-js/dist/assets/bpmn-js.css";
+import "bpmn-js/dist/assets/bpmn-font/css/bpmn-embedded.css";
 
 /** 汉化词表（palette/contextPad/常用按钮；未命中键原样透回） */
 const TRANSLATIONS: Record<string, string> = {