feat: apply Nunito font to all landing page section headings

apps/landing/src/components/open-source.tsx

@@ -6,7 +6,9 @@ export function OpenSource() {
     <section id="open-source" className="px-6 py-24 md:py-36">
       <div className="mx-auto max-w-3xl text-center">
         <FadeIn>
-          <h2 className="text-3xl font-bold tracking-tight md:text-4xl">Open source. Always.</h2>
+          <h2 className="font-[family-name:var(--font-nunito)] text-3xl font-bold tracking-tight md:text-4xl">
+            Open source. Always.
+          </h2>
           <p className="mt-6 text-lg leading-relaxed text-muted">
             SnapOtter is AGPL-3.0 licensed. Inspect every line of code. Contribute back. Self-host
             forever. No vendor lock-in, no surprise pricing changes, no rug pulls.
@@ -16,7 +18,7 @@ export function OpenSource() {
               href="https://github.com/ashim-hq/ashim"
               target="_blank"
               rel="noopener noreferrer"
-              className="inline-flex items-center gap-2 rounded-xl border border-border bg-background px-6 py-3 text-base font-semibold transition-colors hover:bg-background-alt"
+              className="inline-flex items-center gap-2 rounded-xl bg-teal px-6 py-3 text-base font-semibold text-white transition-colors hover:bg-teal-hover"
             >
               <Github size={20} />
               Star on GitHub