style(site): softer, denser h1 shadow (more blur and opacity)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

site/assets/css/style.css

@@ -666,7 +666,7 @@ section[id] {
   font-weight: 900;
   color: #fff;
   /* tight + soft shadow so the lettering separates from the frosted band */
-  text-shadow: 0 1px 2px rgba(0, 0, 0, .45), 0 3px 14px rgba(0, 0, 0, .35), 0 2px 40px rgba(0, 0, 0, .3);
+  text-shadow: 0 2px 10px rgba(0, 0, 0, .55), 0 4px 28px rgba(0, 0, 0, .5), 0 6px 64px rgba(0, 0, 0, .45);
   line-height: 1.05;
   letter-spacing: -.5px;
 }