What problem does it solve? Designing modern websites requires balancing visual trends, accessibility compliance, and Core Web Vitals performance, which is difficult to coordinate across animation libraries, 3D frameworks, and design systems without unified guidance. ## Core Features & Use Cases - Design Pattern Library: Provides implementation code for scrollytelling, micro-interactions, cursor effects, glassmorphism, horizontal scroll galleries, and 3D product viewers using GSAP, Framer Motion, and React Three Fiber. - Accessibility & Performance Guidance: Includes WCAG AAA contrast rules, prefers-reduced-motion handling, keyboard navigation patterns, and Core Web Vitals optimization checklists. - Design Auditing: Ships a Python script that audits HTML files for accessibility, SEO, responsive design, and modern CSS practices with a scored report. - Use Case: When building a landing page with scroll-driven animations, use this Skill to generate the GSAP ScrollTrigger implementation, verify color contrast meets WCAG standards, and audit the final HTML for performance issues. ## Quick Start Use the modern-web-design skill to build an accessible hero section with scroll-triggered animations and audit my index.html for WCAG compliance.