What problem does it solve? AI-generated UI often looks generic, ignores accessibility requirements, and breaks on different screen sizes. This Skill provides concrete engineering standards for building interfaces that meet WCAG 2.1 AA accessibility, follow real design systems, and avoid the recognizable "AI aesthetic" of purple gradients and stock card grids. ## Core Features & Use Cases - Component Architecture Patterns: Enforces composition over configuration, colocated file structures, and separation of data fetching from presentation in React/TypeScript components. - Accessibility Compliance: Provides keyboard navigation, ARIA labeling, focus management, and contrast requirements meeting WCAG 2.1 AA standards. - Responsive & State Design: Covers mobile-first breakpoints (320px to 1440px), state management selection (useState through Zustand/Redux), skeleton loading, and optimistic updates. - Use Case: When asked to build a task management page, the Skill guides creation of composable components with proper empty/error/loading states, keyboard-accessible interactions, semantic color tokens, and layouts tested across all breakpoints. ## Quick Start Use the frontend-ui-engineering skill to build an accessible, responsive task list page that follows our design system.