What problem does it solve? Building web interfaces that look generic, fail accessibility standards, or ship with performance regressions is a common problem when generating UI code. This Skill provides structured design thinking, a 100+ rule UX checklist, and React/Next.js performance patterns so frontend work meets WCAG AA contrast, interaction, and visual quality standards before delivery. ## Core Features & Use Cases - Guided UI Creation: Build components, pages, dashboards, and landing pages in React, Next.js, Vue, Svelte, or HTML/CSS with a required design-thinking phase covering tone, typography, color, and motion. - Multi-Mode Workflows: Run wireframe exploration, interactive prototypes, hi-fi variations, scoped reviews (accessibility, AI-slop, hierarchy-rhythm, interaction-states), accessibility audits, performance passes, and targeted file fixes. - Deterministic Contrast Verification: Compute WCAG contrast ratios with the bundled wcag-contrast.py script instead of estimating by eye, with batch mode for checking every state variant. - Reference Catalogs: Load curated CSV catalogs of 84 style families, 74 font pairings, 25 chart types, and product-type UX reasoning when choosing design directions. - Use Case: Ask for a SaaS pricing page; the Skill proposes distinct visual directions, implements the chosen one with semantic color tokens and responsive layout, then verifies every text/background contrast pair programmatically before delivery. ## Quick Start Ask the assistant to design and build a landing page for your product using the frontend-design skill, then request an accessibility review of the result.