lewagon/setup ? reverse-engineered prompt

Build me a clean setup guide site for Le Wagon students starting the AI Software Development bootcamp.

It should help a new student quickly find the right instructions for their language and computer, then follow a step by step setup for macOS, Windows, or Ubuntu. The main page should make it easy to switch between English, French, Spanish, Portuguese, and Chinese, and each OS page should feel simple and friendly, with clear sections, copyable commands, and links where needed.

I want the content to be easy to maintain too, so if there’s a shared structure or reusable pieces for the different guides, please use that. Keep the design lightweight and readable, since the goal is practical onboarding, not a fancy marketing site. If you need to check current docs or best practices for the tools being installed, look them up online and keep the instructions up to date.