Mirrors the editorial typography and color system of openbureau.ch
onto the Flarum instance (openstudio.kgva.ch). Paste into Flarum
admin → Appearance → Custom Styles. File is also served at
openbureau.ch/flarum.css once the site is deployed, so Flarum can
optionally @import the live URL instead.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
