Increase footer badge size to 480px

- Updated max-width from 120px to 480px (4x larger)
- Badge now more prominent and visible in footer

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

style.css

@@ -132,7 +132,7 @@ footer p {
 }
 
 .footer-badge {
-	max-width: 120px;
+	max-width: 480px;
 	height: auto;
 	display: block;
 	margin: 0 auto;