fix(landing): use consistent nav tab padding across all breakpoints

Author: maxktz

landing/src/components/layout/navigation-bar.tsx

@@ -71,7 +71,7 @@ const mobileLinks: NavItem[] = [
 // ─── Tab styles ──────────────────────────────────────────────────────
 
 const tabBase =
-  "group/tab relative flex h-full items-center justify-center gap-1.5 px-3.5 py-3.5 xl:px-5.5 transition-colors duration-150";
+  "group/tab relative flex h-full items-center justify-center gap-1.5 px-5.5 py-3.5 transition-colors duration-150";
 const tabActive = "bg-background border-b-2 border-b-foreground/60";
 const tabInactive =
   "hover:bg-foreground/[0.03] bg-transparent text-foreground/60 dark:text-foreground/40 hover:text-foreground/70";