What problem does it solve? Choosing consistent styles, colors, typography, and UX patterns for web and mobile interfaces is slow and error-prone, and reviewing UI code for accessibility and usability issues requires deep design knowledge. ## Core Features & Use Cases - Design System Generation: Produces a complete design system (pattern, style, colors, typography, effects) with reasoning and anti-patterns from a product description, with optional persistence to MASTER.md and per-page override files. - Searchable Design Database: Queries 50+ styles, 161 color palettes, 57 font pairings, 161 product types, 99 UX guidelines, and 25 chart types across 10 stacks including React, Next.js, Vue, Svelte, SwiftUI, React Native, Flutter, Tailwind, shadcn/ui, and HTML/CSS. - UI Review Checklists: Provides priority-ranked rules for accessibility, touch targets, performance, animation, forms, navigation, and charts to audit existing interfaces. - Use Case: Ask for a design system for a fintech dashboard, receive a full palette, font pairing, and style recommendation, then review the implemented page against the accessibility and responsive-layout checklists. ## Quick Start Ask the assistant to generate a design system for your product type, for example: create a design system for a beauty spa landing page and review my homepage for UX issues.