Enforce the digital UI design system. This skill exists to stop the LLM from hardcoding values, bypassing tokens, inventing motion, or violating accessibility and interaction standards.

Non-Negotiables

Tokens only. Colors, spacing, radii, shadows, durations, font sizes, and z-indices come from tokens.
Accessibility is mandatory. WCAG AA contrast, visible focus, and minimum touch target size are required.
Motion follows the platform rule: approved web motion patterns on web, approved mobile motion patterns on mobile, always with reduced-motion handling.
Read the relevant reference before writing UI code or reviewing UI output.

Routing

Load only the references needed for the task:

Tokens, color, typography, spacing, grid → references/foundations.md
Motion, timing, easing, sequences → references/motion.md
Component specs and state matrices → references/components.md
Responsive layout, interaction patterns, copy rules → references/patterns.md
Chat UI patterns → references/chat.md
Governance and review checklist → references/standards.md

kernel-ui-design

Non-Negotiables

Routing