diff --git a/assets/country/UN.png b/assets/country/UN.png
new file mode 100644
index 0000000..756f12d
Binary files /dev/null and b/assets/country/UN.png differ
diff --git a/css/nav-mega-menu.css b/css/nav-mega-menu.css
index 91cd857..84cf00a 100644
--- a/css/nav-mega-menu.css
+++ b/css/nav-mega-menu.css
@@ -34,10 +34,11 @@
 
 /* 左侧二级菜单栏 - 深色背景 */
 .nav-left-sidebar {
-  width: 200px;
-  background: rgba(30, 41, 59, 0.8);
-  border-right: 1px solid rgba(56, 189, 248, 0.15);
-  flex-shrink: 0;
+  width: 240px;
+  background: rgba(30, 41, 59, 0.4);
+  backdrop-filter: blur(10px);
+  border-right: 1px solid rgba(56, 189, 248, 0.1);
+  overflow-y: auto;
   height: 100%;
 }
 
diff --git a/plugins/addon/theme_configurator/template/admin/index.html b/plugins/addon/theme_configurator/template/admin/index.html
index 31c7038..fe4cfcf 100644
--- a/plugins/addon/theme_configurator/template/admin/index.html
+++ b/plugins/addon/theme_configurator/template/admin/index.html
@@ -837,6 +837,7 @@
     function getCountryOptions() {
       // 返回带中文名称的地区选项
       return [
+        { code: 'UN', name: '国际' },
         { code: 'CN', name: '中国' },
         { code: 'HK', name: '香港' },
         { code: 'TW', name: '台湾' },