diff --git a/src/media/css/template.css b/src/media/css/template.css
index 8a5604c..c845513 100644
--- a/src/media/css/template.css
+++ b/src/media/css/template.css
@@ -14204,18 +14204,23 @@ fieldset>* {
 }
 
 .container-header {
-	position: relative;
 	z-index: 100;
 	background: var(--header-background-image, url('../../../../../../media/templates/site/mokocassiopeia/images/bg.svg'));
 	background-size: var(--header-background-size, auto);
-	-webkit-box-shadow: 0 5px 5px hsla(0, 0%, 0%, 0.03) inset;
 	box-shadow: 0 5px 5px hsla(0, 0%, 0%, 0.03) inset;
 	background-repeat: var(--header-background-repeat, repeat);
 }
 
+/* Sticky header: override z-index to stay above all content */
+.container-header.sticky-top {
+	z-index: 1020;
+}
+
+/* Disable sticky on mobile — full-width header works better as static */
 @media (max-width: 991.98px) {
-	.container-header {
-		position: relative ;
+	.container-header.sticky-top {
+		position: relative;
+		z-index: 100;
 	}
 }