What problem does it solve? Recreating the visual language of well-known websites requires manually reverse-engineering colors, typography, spacing, and component styles, which is slow and error-prone when building branded HTML/CSS pages. ## Core Features & Use Cases - 54 Design System Templates: Each template captures a site's complete visual language including color palette, typography hierarchy, component styles, spacing system, shadows, and responsive behavior. - Font Substitution Reference: Maps proprietary fonts to Google Fonts CDN substitutes with ready-to-paste link tags and CSS font-family stacks. - Agent Prompt Guides: Every template includes exact CSS values and example component prompts for generating accurate HTML. - Use Case: When asked to build a landing page that looks like Stripe, load the stripe.md template and apply its purple gradient palette, weight-300 typography, and component specs directly into the generated HTML. ## Quick Start Ask the agent to build a landing page styled like Linear using the popular-web-designs skill and verify the result in the browser.