SerSan v2

Next.js + React Three Fiber site for SerSan — production-grade AI systems studio.

• Next.js 16 (App Router, Turbopack)
• React 19, TypeScript
• Tailwind CSS v4 (CSS-first config)
• React Three Fiber + drei (hero 3D scene)
• IntersectionObserver-based reveals (CSS keyframes, not Framer Motion)
• Radix primitives for the mobile nav dialog

bun install      # or npm install / pnpm install
bun run dev      # http://localhost:3000
bun run build    # production build
bun run start    # serve the production build

No environment variables required.

src/
  app/                    Next.js App Router pages + metadata + globals.css
  components/
    hero.tsx              Hero with CSS fade-up reveals
    navbar.tsx            Fixed nav (Work / Services / Process / Trust / Contact)
    footer.tsx            Footer (newsletter, social, legal)
    scene/
      hero-scene.tsx      R3F procedural topology (lightweight placeholder)
    sections/             Homepage sections (server components)
      credibility-strip.tsx
      services-section.tsx
      fit-section.tsx
      process-section.tsx
      case-studies-section.tsx
      trust-section.tsx
      final-cta.tsx
    ui/
      button.tsx          CVA variants (hero, heroOutline, outline, ghost, link...)
      reveal.tsx          IntersectionObserver fade-up wrapper
      section-heading.tsx Eyebrow + title + description
  data/                   Translations, founder data, etc.

When the 3D artist delivers the Blender-exported GLB:

1. Drop the file at public/models/sersan-topology.glb.
2. Update src/components/scene/hero-scene.tsx to load it via useGLTF("/models/sersan-topology.glb") (currently the scene is procedural).
3. Tune scale, position, lighting under the // --- Tunables --- block at the top of the file.

Target sizes: under 5 MB compressed; absolute max 10–15 MB for the first homepage version. Mobile already short-circuits to a static gradient — keep that fallback so phones never pay the GLB cost.

The project builds cleanly with bun run build and has no runtime env vars. Push to GitHub and connect the repo to Vercel — the default Next.js configuration works.

• No Framer Motion on the homepage. Framer Motion 12 + Next 16 + Turbopack + React 19 had a bug where motion.* elements with initial / animate got stuck in their initial state. The homepage uses CSS keyframe fade-up plus an IntersectionObserver wrapper (components/ui/reveal.tsx) instead. The dependency is still in package.json and used by other pages.
• Brass tokens kept. --accent-warm is still defined for the existing audit/consulting/case-study pages. The new homepage uses --accent (cyan) as the primary.