Topline Tab Bar

An icon-only mobile bottom bar where the chosen slot widens into a tinted tab and unfolds its label inline, its neighbours giving way.

A token-driven onboarding stepper with a continuous progress rail, animated number-to-check nodes, a live percentage readout, and a rich per-step content stage that advances real Back/Next state — fully design-system agnostic.

A design-system-adaptive developer-platform header: a wordmark, primary navigation, two numbered-index mega-menus, rule-closed promos, a cross-blur reveal, sliding underline, and a focus-trapped mobile drawer.

A token-driven vertical stepper with step titles, descriptions, and a vertical connector that fills downward as steps complete, plus Back/Next controls — fully design-system agnostic.