Fix top nav links hidden on mobile

The mobile breakpoint hid every nav link except the CTA via
.nav-links a:not(.nav-cta){display:none} with no menu fallback,
leaving the top links invisible on phones. Keep the links visible
by letting the nav wrap them onto their own centered row.

Author: claude

css/base.css

@@ -56,7 +56,6 @@ img { max-width: 100%; display: block; }
   .hero h1 { letter-spacing: -1.6px; }
   .hero p { font-size: 17px; }
   .section { padding: 48px 0; }
-  .nav-links a:not(.nav-cta) { display: none; }
 }
 @media (max-width: 480px) {
   .hero h1 { letter-spacing: -1.2px; }

css/nav.css

@@ -29,3 +29,9 @@
   transition: opacity 0.15s;
 }
 .nav-cta:hover { opacity: 0.85; }
+
+/* Mobile: keep top links visible by wrapping them onto their own row */
+@media (max-width: 768px) {
+  .nav-inner { flex-wrap: wrap; height: auto; padding: 10px 16px; row-gap: 10px; }
+  .nav-links { width: 100%; flex-wrap: wrap; justify-content: center; gap: 12px 18px; }
+}