At 360px wide the h1 was still 52px, because Material keeps a 20px root on mobile, so
"Cooperative" (297px at that size) left only ~30px of slack before breaking mid-word.
Headings now use clamp() to track the viewport and reach the same desktop sizes, with
word-break: normal, hyphens: none and text-wrap: balance so wrapping happens at the
space and the two lines are balanced rather than one word sitting alone.
Dark mode: the slate scheme set the header to #3f6b3e, a dark green on a dark page, so
the bar disappeared into the background. It is now green-mid with near-black text.
Typography moves to publishing/typography.css, loaded after brand.css, and declares
Figtree on the elements themselves -- Material defines --md-text-font-family on <body>,
so a :root value loses to it by DOM proximity. Heading colours are scoped to the light
scheme, since ink is unreadable on the dark one.