Coffee Ring

A coffee-stained academic preprint presented as 16:9 slides: one modern serif from title to footnotes, numbered section headings at the top-left of every card, two-column reading legs, booktabs tables and native monochrome charts beside their finding, numbered display equations, hairline code plates and framed figure photographs — with a single dried coffee ring or splash printed over about every other card, cropped by the slide edge so the type reads through it.