MkDocs plus Material theme on GitHub pages is pretty sweet. Automatic dark mode, useful plugins. I migrated from WordPress, no looking back.
Edit: I'm guessing it's this? https://squidfunk.github.io/mkdocs-material/getting-started/
Here's a site using it: https://docs.libretro.com/
Now to figure out what I can write about.
Though I'm definitely going to use this for internal docs at work probably. Very nice.