fix: clamp hero description to 3 lines on homepage

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

layouts/index.html

@@ -43,7 +43,7 @@
       </h1>
 
       <!-- Description -->
-      <p class="text-chalk text-base md:text-lg max-w-2xl mb-10 leading-relaxed text-pretty font-body opacity-90">
+      <p class="text-chalk text-base md:text-lg max-w-2xl mb-10 leading-relaxed text-pretty font-body opacity-90 line-clamp-3">
         {{- .Description -}}
       </p>