A design system often starts with a palette. Mosaik started with a shape: a square with two opposite corners rounded off, and a triangle that softens two of its angles.

With these two shapes, tokens and forty-one components, it gives the whole Mock world its visual voice. The website imports it, the editor takes its cues from it, and every component is documented in Storybook, tested and checked for accessibility.

It’s the project where writing and code feel most alike: a small vocabulary, strict rules, and the freedom that comes from those rules.