/* nav.css — mobile navigation for foundryos.ca. * * WHY THIS FILE EXISTS * At <=900px the site set .nk{display:none}, which hid every navigation link and left * only a "Start" button. Work, Services, Process, CrewOS, About, Articles and * Assessment were unreachable on a phone — there was no menu to open them from. * * WHY IT IS SHARED RATHER THAN INLINED PER PAGE * The nav markup is duplicated across all six pages and has ALREADY drifted into two * variants. Copying menu styles into six