adjust Hero mobile centering and spacing, reduce H2 mobile size, tighten H1 mobile line height, reduce vertical gaps on mobile across multiple sections, and add touch support for Team member overlays

src/app/page.tsx

@@ -21,7 +21,7 @@ export default function Home() {
       <main>
         <HomeStickyHeader />
         <section className="relative min-h-screen">
-          <Hero className="-mt-20" />
+          <Hero className="md:-mt-18 -mt-20" />
         </section>
 
         <FadeInOnView delayMs={100}>