Header: site/partials/nav.html, head.html, footer.html, injected by site/build.mjs between markers in every page (the bench template too) with the active link marked; the master mark in its black square, the wordmark, Litepaper, Live devnet, Engineering log, Evidence, GitHub and the miner button, in that order everywhere; one menu script (closes on a link, a tap outside, Escape with focus back on the button, a resize past 900 px); a skip link; one focus ring and one reduced-motion rule.
Litepaper: the hash routed by a click delegate and popstate instead of the browser's fragment jump. Root cause of the tabs fault: show() scrolled to the top of the article, never to the section; in whole-paper mode the fragment jump landed on the section and the smooth scroll then dragged the reader back to the Abstract; in one-section mode a deep link scrolled while the section was still display:none and landed on the cover. Now: every section and all 29 subsection headings reachable by URL in both modes, scroll-margin from the measured bar height (nav, plus the contents row on a phone), focus moved to the heading, a re-aim after a late font batch, mode buttons stacked in the sidebar.
Pages: homepage headline capped at 9cqw so it is two lines at 390 and 1440 (was four with "fire." alone), journey inlined by the build (no fetch, no shift), dates as "4 Oct 2026"; live page legend no longer forces 420 px of width at 390, the hash-rate unit as small mono, idle redraw at 30/s with a 1.5x backing store (0.7 to 1.2% of one core idle in Chrome for Testing, taken under load), the proving line wraps on a phone; evidence sort headings are buttons, chips carry aria-pressed, a scroll hint under 1,140 px; bench contents in a sticky scroll box, og.png?v=3; 404.html; sitemap with /evidence; vercel.json caches fonts a year and images a day.
Fonts: eight latin woff2 files in site/fonts (139 KB for all, 118 KB a typical page), preloaded first-paint faces, fallback faces with size-adjust and ascent overrides from the font tables; every page lost its render-blocking fonts.googleapis.com stylesheet and the gstatic origin.
HTML per page before to after (gzip): / 17,265 to 21,810 B; /litepaper 20,556 to 24,957; /live 15,640 to 17,777; /evidence 18,899 to 22,493; /bench 94,723 to 98,289. Third-party requests before to after: 3 to 1 (jsdelivr, light client), 1 to 0, 3 to 0, 1 to 0, 1 to 0. Lighthouse before and after is queued under the measure lock (held by reliability runs since 19:16Z, load average 258) and recorded in docs/design/site-polish-2026-10-04.md when it runs.
Checks: node site/build.mjs, tools/ci/link-check.mjs (246 links, 0 broken), identity grep, and a Chrome for Testing run over every page at 390, 768 and 1440 (no overflow, no console errors, menu, router in both modes, deep links on reload, keyboard).
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
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