diff --git a/index.html b/index.html
index 335e334..cf6f7b4 100644
--- a/index.html
+++ b/index.html
@@ -12,6 +12,7 @@
 <link rel="stylesheet" href="design-system/vibe-theme.css">
 <style>
   a.kt-ai-btn { text-decoration: none; }
+  .vibe-highlight { font-weight: 700; }
 </style>
 </head>
 <body>
