Look Styles
Default base stylesheet for the look layer. Carries one site.Asset (mediaType text/css) whose content is the CSS rules that pair with the HTML structure LookRenderer emits — page layout, site-nav, figure, markdown, and every band class. Publishers override by shipping their own site.Asset named "base-stylesheet" under their publisher's namespace; LookRenderer prefers the asset whose publisher matches the page being rendered, falling back to the kanonak.org default.