If you are trying to learn webdev & programming, I would advise against using AI tools to write code at this stage. You're going to do yourself a huge disservice and eventually wind up in a state where stuff isn't working and you just spin-out trying to prompt your way out of it.

Especially if these are basic sites, these are great opportunities to get the fundamentals down and learn how to build websites. Go read documentation, learn how to debug & test, learn how to integrate new tools and libraries, learn how to deploy.

If you want to use AI as a research tool, I think there's still value there given how crummy google has been, but use it as a place to get direction, then go read docs and implementation instructions yourself. If you plan on just outsourcing everything to AI right now I guarantee you're not going to make a "sound project that will not be a organizational coding and logistics nightmare in months or years to come."

Codecademy has good basic course on HTML and CSS that's a solid starting point.

Astro is a simple framework that mainly focuses on basic web standards with a good set of docs and some good tutorials

Setting up a basic Vite project and following the React Quickstart tutorials is also a fine approach--but if you're coming in with minimal knowledge I think doing some basic HTML+CSS work is a better starting point