Look & feel
Dark mode
theme.defaultMode:light,dark(default) orsystem; the front matter keycolorMode: lightoverrides it.theme: lightmeans the same thing and warns:theme:names a theme.- Press T to switch; the choice is remembered by the browser.
theme.darkholds the dark palette; Mermaid diagrams and Shiki code switch automatically.- Inside a site, decks follow the site theme: use the switch in the header of this site.