- Two new themes (corporate light/dark, nitro racing) and a purple
retune; theme banner SVGs moved to pagerite/themes/, inlined by the
backend, recolored per scheme via CSS classes, with scroll parallax.
- pygments.css maps tokens onto --code-* variables; light and dark
palette sets in the base stylesheet resolve via light-dark() from the
theme's color-scheme; themes just pick a set or retint --code-bg.
- Sidebar omitted unless the section has at least two published items;
fetch-navigation and the site editor handle it appearing/disappearing.
- Floated figures keep captions below at 30% of the text column; h1/h2
clear floats so images never overflow into the next section.
- Links use --link (color-mix of text and accent), weight 500, no
underlines; hover goes full accent.