diff --git a/wp-content/themes/apus-theme/inc/performance.php b/wp-content/themes/apus-theme/inc/performance.php
index 935d1471..10bdfddd 100644
--- a/wp-content/themes/apus-theme/inc/performance.php
+++ b/wp-content/themes/apus-theme/inc/performance.php
@@ -409,9 +409,12 @@ add_filter( 'script_loader_tag', 'apus_add_script_attributes', 10, 2 );
  * @return string Modified source URL without query strings.
  */
 function apus_remove_query_strings_from_static_resources( $src ) {
-	// Solo remover de nuestros propios assets
+	// Solo remover de nuestros propios assets, EXCEPTO style.css principal
 	if ( strpos( $src, get_template_directory_uri() ) !== false ) {
-		$src = remove_query_arg( 'ver', $src );
+		// NO remover query string del CSS principal (necesita cache busting)
+		if ( strpos( $src, '/assets/css/style.css' ) === false ) {
+			$src = remove_query_arg( 'ver', $src );
+		}
 	}
 
 	return $src;