[welpo]

I'm a happy Zola [0] user, which does everything you mentioned except LaTeX.

There are a few themes [1], though I ended up writing my own [2] (which supports MathJax [3] for mathematical notation).

[0]: https://www.getzola.org/

[1]: https://www.getzola.org/themes/

[2]: https://github.com/welpo/tabi

[3]: https://www.mathjax.org/