# Spec: Typography (Layer 02)

File: `src/layers/02-typography.css`

## Purpose

Prose and heading defaults. Responsive typography scale, font stacks, line heights, heading hierarchy, inline elements (code, mark, links, abbreviations).

## Scope

### In scope
- `body` font defaults
- `h1`–`h6` sizing and weight hierarchy
- `p`, `blockquote`, `ul`, `ol`, `li` prose rhythm
- `a` link styling
- `code`, `kbd`, `pre` inline/block code
- `mark`, `abbr`, `small`, `sub`, `sup` inline semantics
- `hr` horizontal rules
- Responsive font-size scaling

### Out of scope
- Syntax highlighting colors (→ chroma layer)
- Navigation typography (→ navigation layer)
- Component-specific text styling (→ components layer)

## Constraints

- References only semantic aliases from `01-tokens.css`
- No Open Props primitives directly
- No element selectors that belong to landmarks (nav, footer, header)