kaurp5/D-s-Lessons ? reverse-engineered prompt

Build me a gentle, modern lesson diary website that can be hosted on GitHub Pages.

I want a simple homepage with a nice polished look, a lesson archive page, and a sample first lesson already filled in so the site doesn’t feel empty. There should also be an admin area at /admin/ so lessons can be edited with a CMS later. Keep it lightweight and static, with clean typography, soft colors, and an easy to read layout that feels calm and welcoming.

Please make the whole thing work well as a basic static site first, and organize the lesson content so it is easy to add more entries over time. If anything needs a current setup detail for the CMS or GitHub Pages, look up the latest docs online and wire it up the simplest way.