diff --git a/assets/css/frontend/layout.css b/assets/css/frontend/layout.css
index ac34de83..70cba20c 100644
--- a/assets/css/frontend/layout.css
+++ b/assets/css/frontend/layout.css
@@ -130,6 +130,14 @@ main.content-shell::after,
   display: block;
 }
 
+/* Single posts use a theme-specific class. It avoids collisions with legacy
+ * scripts that treat a generic .sidebar node as disposable page chrome. */
+.aksrt-article-sidebar {
+  display: none;
+  min-width: 0;
+  box-sizing: border-box;
+}
+
 .content-layout__aside {
   min-width: 0;
 }
@@ -255,7 +263,10 @@ body.site-layout-3 .sidebar,
 
   body.site-layout-2 main.container > .sidebar,
   body.site-layout-2 main.content-shell > .sidebar,
-  body.site-layout-2 .site-main.container > .sidebar {
+  body.site-layout-2 .site-main.container > .sidebar,
+  body.site-layout-2 main.container > .aksrt-article-sidebar,
+  body.site-layout-2 main.content-shell > .aksrt-article-sidebar,
+  body.site-layout-2 .site-main.container > .aksrt-article-sidebar {
     display: block;
     float: none;
     grid-column: 2;
@@ -267,7 +278,10 @@ body.site-layout-3 .sidebar,
 
   body.site-layout-3 main.container > .sidebar,
   body.site-layout-3 main.content-shell > .sidebar,
-  body.site-layout-3 .site-main.container > .sidebar {
+  body.site-layout-3 .site-main.container > .sidebar,
+  body.site-layout-3 main.container > .aksrt-article-sidebar,
+  body.site-layout-3 main.content-shell > .aksrt-article-sidebar,
+  body.site-layout-3 .site-main.container > .aksrt-article-sidebar {
     display: block;
     float: none;
     grid-column: 1;
@@ -282,6 +296,8 @@ body.site-layout-3 .sidebar,
 @media (min-width: 992px) {
   body.site-layout-2 .sidebar .posts-nav-box,
   body.site-layout-3 .sidebar .posts-nav-box,
+  body.site-layout-2 .aksrt-article-sidebar .posts-nav-box,
+  body.site-layout-3 .aksrt-article-sidebar .posts-nav-box,
   .sidebar .content-layout__aside,
   .content-layout__aside {
     position: sticky;
diff --git a/assets/css/frontend/print.css b/assets/css/frontend/print.css
index 8fae6ba5..ed44655b 100644
--- a/assets/css/frontend/print.css
+++ b/assets/css/frontend/print.css
@@ -17,6 +17,7 @@
     .resource-mobile-fab,
     .resource-mobile-download-bar,
     .sidebar,
+    .aksrt-article-sidebar,
     .aksrt-sidebar,
     .widget-area,
     .comments-area,
diff --git a/inc/helpers/aksrt-single-aside.php b/inc/helpers/aksrt-single-aside.php
index 08eaed0d..c1b70b71 100644
--- a/inc/helpers/aksrt-single-aside.php
+++ b/inc/helpers/aksrt-single-aside.php
@@ -66,7 +66,7 @@ if (!function_exists('aksrt_single_render_aside')) :
 			|| is_active_sidebar('sidebar-article')
 			|| is_active_sidebar('all_sidebar_bottom');
 		?>
-		<div class="sidebar" role="complementary" aria-label="<?php esc_attr_e('侧栏', 'aksrt'); ?>">
+		<div class="aksrt-article-sidebar" role="complementary" aria-label="<?php esc_attr_e('侧栏', 'aksrt'); ?>">
 			<?php if (!empty($ctx['has_download'])) : ?>
 				<?php get_template_part('templates/parts/resource-meta-box'); ?>
 			<?php endif; ?>