Quark
Zetafonts · Mario De Libero · 2023

A geometric serif family by Mario De Libero that treats the internal space of letterforms as an active design element, particularly in the heavier weights.
About
Designed by Mario De Libero with contributions from Francesco Canovaro, Cosimo Lorenzo Pancini and Andrea Tartarelli, Quark spans seven weights from Extralight to Heavy, each with a matching italic, plus two variable font files. The family's defining characteristic is its bold interpretation of internal counter space, which shifts from conventional emptiness into deliberate geometric form as weights increase. Latin coverage extends to 201 languages across 443 glyphs, with OpenType features including case-sensitive forms and stylistic alternates.
Classification
Quark is a serif typeface that combines traditional graceful serifs with geometric treatment of internal letter space, making it a geometric serif rather than a purely classical or transitional style.