/* ============================================================================ _nav.css — Mobile navigation menu (hamburger) ---------------------------------------------------------------------------- Loaded LAST in on every page so it overrides the older per-page header rules that hid the primary nav (index, condition) or wrapped it into cluttered rows (_v2-service.css, _shared.css) on small screens. Behaviour: • >1024px → inline nav as designed; hamburger hidden. • ≤1024px → inline nav collapses; a hamburger button toggles it open as a dropdown panel anchored under the header. Colors use design-system vars with hard fallbacks so this works on every page regardless of which stylesheet (or inline