# Visual rules

The figure is an isometric drawing on a 760×470 view, azimuth 58°, elevation 30°. One unit is about 10 cm. The origin sits near the middle of the base.

Palette, light page: page `#f2f2ef`, ink `#18181a`, muted `#6b6b70`, faces from `#dcdcd9` to `#f4f4f1`. Dark page: page `#0b0b0b`, ink `#ecebe6`, faces from `#0f0f0f` to `#181818`. Line weight on edges is 0.6px, and the active step uses a 1.1px edge.

Parts are boxes, wedges (ramps), cylinders (wheels and gears), bells, spheres (marbles) or a crank. Each part has a `step` number. The guide shows parts up to the current build step and dims the rest.

Type: Anton for the step title, line-height 1.05 (1.1 in Spanish). Inter Tight for buttons and labels. Source Serif 4 for the prose. IBM Plex Mono for the small plate labels. Buttons are at least 44×44 px.

Order on the page: the drawing, then the step buttons, then the short instruction, then the long text, the legend, the sources and the safety line. A video, if the machine has one, is last and does not autoplay with sound.

Figure numbers use `FIG.` plus the machine name in capitals. Do not cover the drawing with captions.

Do not mention other project names, fundraising, or a phone number.