style(hero): increase hero title line-height to prevent text overlap

Author: Hakan Çelik

docs/styles.css

@@ -209,7 +209,7 @@ body {
 .hero-title {
     font-size: 3.5rem;
     font-weight: 700;
-    line-height: 1.2;
+    line-height: 1.35;
     margin-bottom: var(--spacing-md);
     color: var(--text-primary);
 }