JetBrains Mono 2.304. Official commit cd5227bd1f61dff3bbd6c814ceaf7ffd95e947d9.
https://github.com/JetBrains/JetBrainsMono/tree/v2.304
Unmodified fonts, SIL OFL 1.1 supplied locally.
Original SVG artwork and page code for jg-demo.dev.