Seven `--text-*` rungs with line heights declared beside them, replacing eighteen arbitrary font sizes across eight files.

Wide steps from `base` up, where a heading needs to outrank its body by more than weight; narrow below, where the sizes are already near the floor of legibility. Line heights are declared per rung because Tailwind's defaults are computed against Tailwind's sizes, so overriding a size alone would pair new type with the old rhythm.

`--text-*: initial` first, so a rung we do not declare stops resolving to Tailwind's — ours stops at `2xl`/28px and its untouched `3xl` is 30px, two pixels apart, in a change about steps being far enough apart to read as steps.

### The document reads `--plan-body`, not `--text-base`

MDXEditor declares `--text-base: 1rem` on its own root, which sits between `:root` and the prose, so reading the theme token inside the editor returns its value and not ours — the body would have gone to 16px while the scale said 15. `.plan` is outside that root, so it catches the theme's value on the way past and passes it down under a name nothing else claims. Measured in a browser: 16px before, 15px after.

**Worth eyeballing before merge:** three badge labels move from 8px to 11px — the AI avatar in the transcript, presence initials, and the `+N` overflow chip — all inside 20px circles. `+12` in a busy room is the tight one.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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### Stack

Merge bottom-up. Each PR targets the one below it, so every diff reads in isolation; GitHub retargets the child automatically as each parent merges.

1. #9  — Emit all theme tokens, fix callout colours, load Inter  ←  `main` 2. #10 — Add two-stop shadow scale tokens 3. #11 — Add radius tokens and replace bare rounded classes 4. #12 — Add type scale tokens, replace arbitrary font sizes 5. #13 — Add easing and duration tokens, set transition defaults 6. #15 — Add one focus-visible outline rule for all controls 7. #16 — Scale buttons down on press 8. #17 — Add tabular-nums to figures and balance plan headings 9. #18 — Shorten empty states and composer status copy 10. #19 — Add entrance animation for newly arrived items

Plan: `docs/superpowers/plans/2026-08-04-design-token-foundation.md`