Shrink hero section, remove min-height: 100vh

Hero no longer takes the full viewport height, so pricing
is visible sooner when scrolling.

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

style.css

@@ -139,10 +139,9 @@ a {
 /* === Hero === */
 .hero {
     position: relative;
-    min-height: 100vh;
     display: flex;
     align-items: center;
-    padding: 120px 0 80px;
+    padding: 120px 0 60px;
     overflow: hidden;
 }