# Copley

> Copley's public brand system and documentation, served at docs.copley.com with no auth — for the Copley web app, the marketing site, and any agent doing visual or copy work. Fetch these before generating brand-facing UI or copy.

## Brand

- [Design tokens](https://docs.copley.com/brand/tokens.css): canonical CSS custom properties (colors, type scale, font family names, gradient, radius). Two-theme: `:root` carries the light values and `[data-theme="dark"]` the dark ones, so `data-theme` on `<html>` is the switch. The source of truth every surface consumes; import it directly rather than copying values.
- [Brand guide](https://docs.copley.com/brand/guide.md): prose usage rules, voice, do/don'ts, and font names with fallback stacks for external consumers.