Navara landing page

The marketing LP is a single Astro component with a global <style> block, driven by data files for theme/config, copy, and images. Design reference: design_handoff_navara_landing_page.

Files & the three-way split

• docs/src/components/LandingPage.astro — the whole page (markup + <style is:global> + reveal/showcase scripts). Rendered per locale by pages that do <LandingPage locale="..." />.
• docs/src/components/LpHeader.astro — the site header, shared with the docs site: variant="lp" (fixed/transparent, frosts via lp-header-solid toggled by LandingPage's script, carries the ?color switcher markup — its behavior script stays in LandingPage) and variant="docs" (Starlight Header override wraps it, inside Starlight's header shell, with a search slot; its LP vars are pinned from --nv-navy/--nv-cream set in docs/src/styles/theme.css). Header markup/styles/lang-select script live here, not in LandingPage. The examples gallery top page mirrors the same design in React (web/navara_three/example/components/SiteHeader.tsx).
• docs/src/data/lp.json — theme colors, image slots, external links (not copy). Colors: primary/accent/sub/maplibre (fed as CSS vars --pri/--acc/--sub/--ml; the derived --ink*/--on-dark*/--line* vars come from these). themeVariants lists candidate primary/sub/accent sets (verbatim from the design palette sheet) for the header preview switcher, revealed only by ?color in the URL (?color=<name> preselects one). Switching rewrites --pri/--sub/--acc at runtime; roles a candidate can't fill without losing contrast fall back to plain black/white via --pri-ink (always-dark ink/scrim source, = --pri normally), --on-band (text on --pri bands) and --on-acc — and a synthetic resize re-samples the adaptive gallery inks. images.<slot>.src is a repo-root-relative path into docs/src/assets or web/navara_three/example/public/screenshots, resolved by resolveImage.
• docs/src/data/lp-locales/<locale>.json — all copy, per locale. en is ROOT_LOCALE (served at /, others under /<locale>/). Image alt text lives here, in imageAlts keyed by the lp.json slot id (a missing alt throws at build).

To add a locale: add its lp-locales/<code>.json and a page rendering <LandingPage locale="code" />.

Conventions