[e12e]

Maybe it's less obvious on desktop - but I had to look around a bit to find the source for the theme:

https://github.com/GeorgeIpsum/tufte-jekyll

[ryantgtg]

I don't think this source contains the dark mode toggle. He's made only two of his own commits to this fork, and neither relate to that functionality. Would be nice to have! Looks great.