diff --git a/public/themes/dist_static/static/css/common.css b/public/themes/dist_static/static/css/common.css
index d56bb03..80997ac 100644
--- a/public/themes/dist_static/static/css/common.css
+++ b/public/themes/dist_static/static/css/common.css
@@ -308,6 +308,7 @@ body {
   height: 100%;
 }html {
   font-size: 16Px;
+  scrollbar-gutter: stable;
 }body {
   overflow-x: hidden;
   font-family: "MiSans VF", "PingFang SC", sans-serif;
diff --git a/public/themes/dist_static/static/js/common.js b/public/themes/dist_static/static/js/common.js
index 8411a14..c9d1e07 100644
--- a/public/themes/dist_static/static/js/common.js
+++ b/public/themes/dist_static/static/js/common.js
@@ -146,5 +146,14 @@ $(function() {
 		$subgroup.toggleClass("is-expanded", !isExpanded);
 		$(this).attr("aria-expanded", !isExpanded);
 	});
+
+	// hover 展开 mega 面板时禁止/恢复页面滚动
+	$(".site-header__nav-item--mega").on("mouseenter", function() {
+		if ($("body").hasClass("is-mask-open")) return;
+		lenis.stop();
+	}).on("mouseleave", function() {
+		if ($("body").hasClass("is-mask-open")) return;
+		lenis.start();
+	});
 });
 //#endregion
diff --git a/public/themes/static_new/styles/base.css b/public/themes/static_new/styles/base.css
index ec603eb..e7c10ae 100644
--- a/public/themes/static_new/styles/base.css
+++ b/public/themes/static_new/styles/base.css
@@ -4,6 +4,7 @@
 /* 页内锚点平滑滚动：html + body 都写，兼容不同浏览器的滚动根节点 */
 html {
   font-size: 16px;
+  scrollbar-gutter: stable;
 }
 html,body{
   width: 100%;