CSS system
Three layers keep wireframes maintainable: shared tokens, page layout, examples.
1. wireframe.css
Colors, type, spacing, buttons, placeholders, chrome. Change once → all pages update. AI should not edit this unless you ask.
2. Page <style>
Layout specific to one wireframe — grids, section spacing. Stays in that file.
3. Kit reference HTML
kit-system.html, kit-components.html, kit-wireframe-deck.html — visual source of truth for AI.