diff --git a/docs/.vitepress/config.mjs b/docs/.vitepress/config.mjs
index ecb0518..7c60129 100644
--- a/docs/.vitepress/config.mjs
+++ b/docs/.vitepress/config.mjs
@@ -4,7 +4,10 @@ export default defineConfig({
 	title: 'CWD 评论系统文档',
 	description: '基于 Cloudflare Workers 的轻量级评论系统',
 	lang: 'zh-CN',
-	outline: [2, 3],
+	outline: {
+		level: [2, 3, 4],
+		label: 'On this page',
+	},
 	head: [
 		[
 			'link',