Footer is fixed bottom-0 with h-footer (5rem mobile) / md:h-footer-wide
(4rem desktop). Body gets matching pb-footer/md:pb-footer-wide to
reserve space. Tokens registered in @theme inline as --spacing-footer*.
Add animation tokens to :root (--ease-spring, --ease-decelerate,
--ease-default, --duration-fast/normal/slow/spring). Apply spring easing
to section title enter. Add separate section-body transition: fast
blur-out exit (100ms), clean slide-in enter (350ms) delayed by 200ms so
content appears after the title animation completes.
Enable experimental.viewTransition in Next.js config. Wrap active section
in ViewTransitionWrapper so the browser cross-fades between sections on
navigation. Replace animate-fadeIn keyframe with @starting-style + CSS
transition for the initial render enter animation.
Replace ochre-clay, carbon-black, burnt-oxide, slate-indigo with clean
two-color system: --cream (#f4f0e8) and --blue (#041cf3). Update every
component, utility class, and test assertion.