This site is made with Pelican, a Python-powered static site generator. There are a lot of SSGs out there, but I went with this one as it's written in Python, so I can eeasily extend it if I need to.
I wrote the theme myself. It's designed to be minimalist, have semantic markup, clean, modern CSS and use only system fonts. All these help keep the page size to a minimum. There are currently no cookies, and no plans to add any. This is not for any ideoligcal reason — I just don't need them.
The design has incorporated accessibility from the start. It should pass WCAG 2.1 AA. Getting it AAA compliant would be a lot more work for almost no benefit, so it'll only happen if I have some free time and nothing else to do. However, that doesn't mean I won't improve the accessibility generally.
The site is hosted on GitHub Pages for the sake of simplicity and not having to needlessly throw money away.