This blog uses a significantly modified version of the Mria theme — I stripped out several components, reworked others, and integrated features not available in the original.
The original theme was designed by Artem Sheludko (check out his other themes). I acqurired a license for this theme from jekyllthemes.io. The copyright is with its owner. I genuinely like his work; if I were to design something from scratch, I’d aim for the same aesthetic — it just wouldn’t turn out nearly as good.