I first opened it in Firefox on Linux. I think whatever subpixel rendering it's trying to do doesn't work with light fonts on dark background, there is blurrine

I first opened it in Firefox on Linux. I think whatever subpixel rendering it's trying to do doesn't work with light fonts on dark background, there is blurriness and colour fringes. It seems to look a little better in Chromium. Just adding some weight to the font would already help. Another thing that's hurting readability is monospace.