feat: animated expansion of md-link

src/components/Article.tsx

@@ -7,6 +7,7 @@ export interface ArticleProps {
   section?: string;  // 指定要显示的标题（不含 #）
   onLoaded?: () => void;
   onError?: (error: Error) => void;
+  class?: string;  // 额外的 class 用于样式控制
 }
 
 async function fetchArticleContent(params: { src: string; section?: string }): Promise<string> {
@@ -39,7 +40,7 @@ export const Article: Component<ArticleProps> = (props) => {
   });
 
   return (
-    <article ref={articleRef} class="prose" data-src={props.src}>
+    <article ref={articleRef} class={`prose ${props.class || ''}`} data-src={props.src}>
       <Show when={content.loading}>
         <div class="text-gray-500">加载中...</div>
       </Show>