diff --git a/bff/etc/product.pb b/bff/etc/product.pb
index cff1cd9..be7cd82 100644
Binary files a/bff/etc/product.pb and b/bff/etc/product.pb differ
diff --git a/bff/internal/response/middleware.go b/bff/internal/response/middleware.go
index dedbd51..4be30a6 100644
--- a/bff/internal/response/middleware.go
+++ b/bff/internal/response/middleware.go
@@ -54,6 +54,7 @@ func Wrap(next http.HandlerFunc) http.HandlerFunc {
 	}
 }
 
+// unwrapJSONData 将 RPC Response.data（proto string）里的 JSON 文本还原为对象/数组/数字。
 func unwrapJSONData(v any) any {
 	s, ok := v.(string)
 	if !ok {
@@ -63,9 +64,6 @@ func unwrapJSONData(v any) any {
 	if s == "" {
 		return nil
 	}
-	if s[0] != '{' && s[0] != '[' {
-		return v
-	}
 	var parsed any
 	if err := json.Unmarshal([]byte(s), &parsed); err != nil {
 		return v