diff --git a/src/markdown.ts b/src/markdown.ts
index f3e7114..064d22f 100644
--- a/src/markdown.ts
+++ b/src/markdown.ts
@@ -9,6 +9,15 @@ export function renderMarkdown(text: string): string {
     return `\x00CODE${codeSpans.length - 1}\x00`
   })
 
+  // H1: # Header → bold+italic+underline
+  result = result.replace(/^# (.+)$/gm, "\x1b[1;3;4m$1\x1b[22;23;24m")
+
+  // H2/H3: ## Header / ### Header → bold
+  result = result.replace(/^#{2,3} (.+)$/gm, "\x1b[1m$1\x1b[22m")
+
+  // Blockquotes: > text → dim+italic
+  result = result.replace(/^> (.+)$/gm, "\x1b[2;3m$1\x1b[22;23m")
+
   // Bold: **text**
   result = result.replace(/\*\*(.+?)\*\*/g, "\x1b[1m$1\x1b[22m")