diff --git a/src/components/image-editor/ImageCanvasBasicGenerationComposerView.tsx b/src/components/image-editor/ImageCanvasBasicGenerationComposerView.tsx
index d2255e2b5..8abd6a34a 100644
--- a/src/components/image-editor/ImageCanvasBasicGenerationComposerView.tsx
+++ b/src/components/image-editor/ImageCanvasBasicGenerationComposerView.tsx
@@ -274,7 +274,7 @@ export function ImageCanvasBasicGenerationComposerView({
             value={dialog.sceneCustomStyle ?? ''}
             disabled={dialog.status === 'generating'}
             placeholder="填写自定义画风，例如：90 年代复古像素风"
-            className="image-canvas-editor__scene-custom-style"
+            className={`${promptClassName} image-canvas-editor__scene-custom-style`}
             onChange={(event) =>
               setGenerateDialog((currentDialog) =>
                 currentDialog
diff --git a/src/components/image-editor/ImageCanvasGenerationComposerView.test.tsx b/src/components/image-editor/ImageCanvasGenerationComposerView.test.tsx
index 82424a46b..5cee9f03c 100644
--- a/src/components/image-editor/ImageCanvasGenerationComposerView.test.tsx
+++ b/src/components/image-editor/ImageCanvasGenerationComposerView.test.tsx
@@ -210,6 +210,9 @@ describe('ImageCanvasGenerationComposerView', () => {
     });
     expect(customStyle.tagName).toBe('TEXTAREA');
     expect(customStyle.className).toContain('auto-grow-text-area');
+    expect(customStyle.className).toContain(
+      'image-canvas-editor__generation-prompt',
+    );
     expect(customStyle.className).not.toContain('platform-text-field');
   });
 
diff --git a/src/index.css b/src/index.css
index 90ef84928..ecf04d14c 100644
--- a/src/index.css
+++ b/src/index.css
@@ -16814,19 +16814,6 @@ button {
 }
 .image-canvas-editor__scene-custom-style {
   grid-column: 1 / -1;
-  min-height: 2.4rem;
-  border: 1px solid rgba(15, 23, 42, 0.08);
-  border-radius: 0.85rem;
-  background: #f8fafc;
-  color: #0f172a;
-  font-size: 0.82rem;
-  font-weight: 680;
-}
-
-.image-canvas-editor__scene-custom-style:focus {
-  border-color: var(--image-canvas-brand-border-strong);
-  background: #ffffff;
-  box-shadow: 0 0 0 3px var(--image-canvas-brand-focus-ring);
 }
 
 .image-canvas-editor__scene-style-anchor {