简单修改

src/pages/posts/[slug].astro

@@ -3,6 +3,7 @@ import { render } from 'astro:content';
 import BaseLayout from '../../layouts/BaseLayout.astro';
 import { getPublishedPosts, formatDate, readingTime, heroCss } from '../../lib/utils';
 import Toc from '../../components/Toc.astro';
+import Comments from '../../components/Comments.astro';
 import '../../styles/prose.css';
 
 export async function getStaticPaths() {
@@ -65,6 +66,9 @@ const updated = post.data.updatedDate ? formatDate(post.data.updatedDate) : null
       </div>
     </div>
 
+    <!-- 评论区（自托管 Artalk）-->
+    <Comments pageKey={`/posts/${post.id.replace(/\/index$/, '')}`} pageTitle={post.data.title} />
+
     <!-- 上下篇 -->
     {(prev || next) && (
       <nav class="pager reveal">