[130U]

Summary

A subtraction pass on the redesign from #58, after review on the live site: fewer text styles per component and fewer rules.

• Experience entries: the hanging title column widens from 3 to 4 of 10 grid columns and holds only the title. The grey record lines (organization or paper title, then dates) are removed; the detail pages' record strip still carries them.
• Rules → whitespace: entries, directory rows, degree records and contact items are now separated by space (64px between entries). Rules remain only at section level, on the detail-page record strip, and on diagram stages. The diagram's own top rule is removed because the record strip rule sits just above it.
• Disclosure note: its text introduces "the following four projects", so it now opens the AI section as a standfirst under the heading, in the reading face and supporting-ink colour. Its heading is visually hidden and still labels the aside.
• About introduction: "Thinking mathematically / Working in AI" stacks over its paragraph on one left edge; the second line steps back to the muted tone.
• Prose inset: prose on axis B keeps --prose-inset (32px) from the reading-end guide.
• Fix: the diagram's middle loop segment rendered with the class name undefined; it now has its own class.

Copy and contracts

• No approved prose changed. Visible copy changes only on /experience/ and its compatibility routes (record lines removed, note moved).
• protected-sources.json: hash refreshed for ExperienceContent.tsx (markup only).
• visible-copy-manifest.json: regenerated.
• Tests now encode the 4fr / 6fr split, the column-9 guide, and the absence of entry, row and directory rules. docs/design.md is updated.

Test plan

• npm run check (protected sources, lint, build, 146/146 artifact tests, visible copy)
• npm run typecheck
• Visual review at 1536px (About, Experience, a legal article) and 390px (Experience)

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