feat: initial commit — Webflow to Next.js conversion

QuantumLab template converted to Next.js 16 + React 19 + TypeScript:
- 8 page routes (home, about, blog, contact, careers, team-members, coming-soon, 404)
- Dynamic routes for blog posts, career positions, and team members
- GSAP animations (marquee, counters, button hovers)
- IntersectionObserver-based scroll reveal (blur-to-clear transitions)
- Dark mode with next-themes
- React Hook Form + Zod contact form
- Framer Motion page transitions
- Lottie animations via lottie-web

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/not-found.tsx

@@ -0,0 +1,24 @@
+import Link from "next/link"
+
+export default function NotFound() {
+  return (
+    <main className="section-small top overflow-hidden">
+      <div className="w-layout-blockcontainer container-default w-container">
+        <div className="text-center" style={{ padding: "120px 0" }}>
+          <div className="subtitle">404</div>
+          <div className="mg-top-4x-extra-small">
+            <h1>Page not found</h1>
+          </div>
+          <div className="mg-top-4x-extra-small">
+            <p>The page you&apos;re looking for doesn&apos;t exist or has been moved.</p>
+          </div>
+          <div className="mg-top-24px">
+            <Link href="/" className="form-button w-button">
+              Back to home
+            </Link>
+          </div>
+        </div>
+      </div>
+    </main>
+  )
+}