Architect Cyanotype is the blueprint made into an interface: a deep Prussian-blue ground from which white drafting lines, grids, dimensions, and annotations reverse out. It descends from Sir John Herschel's 1842 iron-ferrocyanide process, which gave drafting offices a cheap way to copy drawings as white-on-blue.

Everything here is monospaced, orthogonal, and measured. Hairline white strokes draw cards and dividers; mono labels read like stencilled callouts; a faint grid governs every surface. The blue is the page — never inverted to white paper.