diff --git a/components/SmartChatBox/MessageRenderer.tsx b/components/SmartChatBox/MessageRenderer.tsx
index 537a053..f1c9a62 100644
--- a/components/SmartChatBox/MessageRenderer.tsx
+++ b/components/SmartChatBox/MessageRenderer.tsx
@@ -18,7 +18,7 @@ export function MessageRenderer({ msg }: MessageRendererProps) {
   const bubbleClass = useMemo(() => {
     if (isSystem) return "bg-amber-50 text-amber-900 border border-amber-200";
     if (isUser) return "bg-blue-500/30 text-white";
-    return "bg-[#6af4f933] text-gray-100"; // assistant
+    return "bg-[#62402733] text-gray-100"; // assistant
   }, [isSystem, isUser]);
 
   const badge = isSystem ? (
@@ -26,7 +26,7 @@ export function MessageRenderer({ msg }: MessageRendererProps) {
       系统流程
     </span>
   ) : msg.role === "assistant" ? (
-    <span className="inline-flex items-center gap-1 px-2 py-0.5 text-[10px] rounded-full bg-[#6af4f94d] text-gray-100 mr-2">
+    <span className="inline-flex items-center gap-1 px-2 py-0.5 text-[10px] rounded-full bg-[#6240274d] text-gray-100 mr-2">
       助手
     </span>
   ) : null;