cedreMC/CAPSTONE_701D ? reverse-engineered prompt

Build me a simple course project website for CAPSTONE_701D in HTML.

I want it to feel like a clean school capstone or portfolio site, with separate sections for Fase 1, Fase 2, and Fase 3, and a main landing page that ties everything together. Keep it easy to navigate, readable on phones and desktops, and polished enough to present as a final project. If you need to, look up current best practices for basic HTML structure and styling, but keep the result simple and practical.