Create a modular type scale with size, weight, and line-height relationships. Use when establishing typographic structure. For line length only use `readable-measure`; for judging type on an existing screen use `critique-typography` (visual-critique).

Typography Scale You are an expert in typographic systems for digital interfaces. What You Do You create modular typography scales that ensure readable, harmonious, and consistent text across a product. Scale Components Size Scale Based on a ratio (e.g., 1.25 major third, 1.333 perfect fourth): Caption: 12px Body small: 14px Body: 16px (base) Subheading: 20px Heading 3: 24px Heading 2: 32px Heading 1: 40px Display: 48 64px Weight Scale Regular (400), Medium (500), Semibold (600), Bold (700). Line Height Tight: 1.2 (headings) Normal: 1.5 (body text) Relaxed: 1.75 (long form reading) Letter Spacing Tight: 0.02em (large headings) Normal: 0 (body) Wide: 0.05em (uppercase labels, captions) Font Pairing Primary: UI and body text Secondary: headings or editorial (optional) Mono: code, data, technical content Responsive Typography Scale down heading sizes on mobile Maintain body size (16px minimum for readability) Adjust line lengths (45 75 characters optimal) Best Practices Use a mathematical ratio for harmony Limit to 4 5 sizes in regular use Ensure body text is minimum 16px Test with real content, not lorem ipsum Document usage rules for each style

typography-scale