Northline-material profile

Level claimed: L3 Light + dark: yes Axes authored: - L1 colours + --bw-color-surface-raised - L2 font families - L3 radius (--bw-radius-sm / -md / -lg) plus --bw-radius-xl for modal/toast overlay chrome (beyond L3 minimum) - L3 elevation (--bw-elevation-1 / -2 / -3) plus --bw-elevation-4 for open-modal altitude (beyond L3 minimum) Kit exceptions: none Preview routes: shell, card, form, one marketing band under data-bw-brand="northline-material" after tokens.css; prefer {% bw_token_specimen %} plus live kit surfaces Contrast: fg-on-accent light and dark (same northline values; verify ≥ 4.5:1) Deferred: L4 spacing/density; further surface ladder (sunken/overlay); toast --bw-elevation-5

Fictional L3 torture pack: soft radius and heavier elevation so material language is obvious on a white canvas (card, button, modal). Not a recommended product look. See THEME.md.