I've been using Pelican¹ with m.css², it does math, sitemaps, RSS feeds, code, graphs and a lot other things very nicely for me. Other blog platforms are far from as powerful, what I've tried, with so little hassle.
(Not OP)Shameless plug: Please take a look at Wemebox CMS https://wemebox.com. I created this because I wanted a dead simple CMS for the websites I create for my clients.I believe it is much simpler than Hugo. Will be open sourcing the source code in a couple of months.