The same site for one new residential building, where the building goes up floor by floor, with five chapters, drawn floor plans and a live availability table, now as a Next.js 16 project (App Router, static export) and a plain React project (Vite + React Router) in one download. 13 pages, all content in JSON, plain CSS with design tokens, no Tailwind, every page prerendered with sitemap and robots built in.