Screenshot of Foliate, with Frank Chimero's "The Share of Design" open, using the dark system style. The window is wide enough to fit the sidebar and two columns of text. The word "Momentum" is selected, and the Wikipedia page for that word is previewed in a popover.
https://files.mastodon.social/media_attachments/files/111/403/428/990/892/286/original/97ddc5dcd5e7d196.png