:root {
  --paper: #f8f6f0;
  --paper-deep: #f0ebe1;
  --warm: #f4eee4;
  --white: #fffdf8;
  --ink: #293348;
  --body: #485266;
  --muted: #687184;
  --line: rgba(41, 51, 72, .15);
  --line-strong: rgba(41, 51, 72, .34);
  --accent: #a64e31;
  --accent-light: #d97754;
  --teal: #426d70;
  --plum: #8b5f57;
  --dark: #293348;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --shell: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: var(--sans); }
button, input { font: inherit; }
a { color: inherit; }
img { max-width: 100%; }
.skip-link { position: fixed; z-index: 100; left: 18px; top: -60px; background: var(--white); border: 1px solid var(--line); padding: 9px 15px; }
.skip-link:focus { top: 18px; }
.shell { width: min(var(--shell), calc(100vw - 64px)); margin-inline: auto; }

.topbar {
  min-height: 62px;
  padding: 0 max(24px, calc((100vw - 1360px) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(248, 246, 240, .94);
  backdrop-filter: blur(12px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 30;
}
.topbar a { width: max-content; text-decoration: none; font-size: 11px; }
.brand { font-family: var(--mono); font-weight: 700; letter-spacing: .1em; }
.topbar > span { color: var(--muted); font: 9px var(--mono); letter-spacing: .15em; text-transform: uppercase; }
.paper-link { justify-self: end; }

.side-toc { display: none; }
@media (min-width: 1460px) {
  .side-toc {
    --toc-progress: 0%;
    display: block;
    position: fixed;
    z-index: 12;
    top: 98px;
    left: max(16px, calc((100vw - 1450px) / 2));
    width: 135px;
    padding-left: 15px;
    border-left: 1px solid var(--line);
  }
  .toc-kicker { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .16em; }
  .side-toc ol { list-style: none; margin: 15px 0 17px; padding: 0; display: grid; gap: 1px; }
  .side-toc a { padding: 7px 0; display: grid; grid-template-columns: 24px 1fr; align-items: baseline; color: var(--muted); text-decoration: none; font-size: 10px; line-height: 1.35; }
  .side-toc a b { font: 8px var(--mono); opacity: .65; }
  .side-toc a:hover, .side-toc a.active { color: var(--ink); }
  .side-toc a.active b { color: var(--accent); opacity: 1; }
  .toc-progress { width: 1px; height: 45px; display: block; background: var(--line); position: relative; }
  .toc-progress i { position: absolute; inset: 0 0 auto; height: var(--toc-progress); background: var(--accent); }
}

.page { max-width: 1440px; margin-inline: auto; min-height: 100vh; border-left: 1px solid var(--line); border-right: 1px solid var(--line); }
.hero { padding: 74px 0 38px; border-bottom: 1px solid var(--line); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.36fr) minmax(360px, .64fr); gap: 66px; align-items: end; }
.eyebrow { margin: 0; color: var(--accent); font: 700 10px/1.5 var(--mono); letter-spacing: .18em; text-transform: uppercase; }
.hero h1 { margin: 24px 0 25px; font-size: clamp(48px, 5.2vw, 68px); line-height: 1.04; letter-spacing: -.06em; text-wrap: balance; }
.deck { max-width: 760px; margin: 0; color: var(--body); font-size: 18px; line-height: 1.85; }
.hero-actions { margin-top: 34px; display: flex; gap: 21px; align-items: center; flex-wrap: wrap; }
.hero-actions a { color: var(--body); text-underline-offset: 4px; font-size: 12px; }
.hero-actions .primary-action { padding: 12px 16px; border: 1px solid var(--dark); background: var(--dark); color: var(--white); text-decoration: none; }

.hero-ledger { border: 1px solid var(--line-strong); background: var(--white); }
.ledger-head { min-height: 45px; padding: 0 17px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.ledger-head span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .14em; }
.ledger-head i { color: var(--muted); font: 9px var(--mono); font-style: normal; }
.ledger-axis { min-height: 73px; padding: 13px 17px; display: grid; grid-template-columns: 28px 1fr auto; gap: 11px; align-items: center; border-bottom: 1px solid var(--line); }
.ledger-axis > span { color: var(--accent); font: 10px var(--mono); }
.ledger-axis b { display: block; font-size: 13px; }
.ledger-axis small { display: block; margin-top: 5px; color: var(--muted); font: 10px var(--mono); }
.ledger-axis em { color: var(--teal); font: 9px var(--mono); font-style: normal; }
.ledger-verdict { padding: 18px; background: var(--warm); }
.ledger-verdict span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .1em; }
.ledger-verdict p { margin: 8px 0 0; color: var(--body); font-size: 12px; line-height: 1.7; }
.hero-meta { margin-top: 54px; padding-top: 17px; border-top: 1px solid var(--line); display: grid; grid-template-columns: repeat(4, 1fr); }
.hero-meta dl { margin: 0; padding-right: 22px; border-right: 1px solid var(--line); }
.hero-meta dl + dl { padding-left: 24px; }
.hero-meta dl:last-child { border: 0; }
.hero-meta dt { color: var(--muted); font-size: 9px; }
.hero-meta dd { margin: 7px 0 0; font: 10px/1.5 var(--mono); }

.story-section { padding: 78px 0 90px; scroll-margin-top: 74px; }
.story-section + .story-section { border-top: 1px solid var(--line); }
.section-heading { width: 100%; margin: 0 0 37px; display: grid; grid-template-columns: 46px 1fr; gap: 20px; align-items: start; }
.section-heading > span { padding-top: 8px; color: var(--accent); font: 11px var(--mono); }
.section-heading h2 { max-width: 960px; margin: 8px 0 0; font-size: clamp(34px, 4vw, 48px); line-height: 1.16; letter-spacing: -.045em; text-wrap: balance; }
.prose p { margin: 16px 0; color: var(--body); font-size: 15px; line-height: 1.95; }
.prose b, .prose strong { color: var(--ink); }
.lead-prose p { font-size: 16px; line-height: 2; }
.two-column-prose { columns: 2; column-gap: 54px; }
.two-column-prose p { margin-top: 0; break-inside: avoid; }
.compact-prose p { font-size: 13px; line-height: 1.9; }
.prose code { font: 12px var(--mono); color: var(--teal); }

.opening-grid { display: grid; grid-template-columns: minmax(0, 1.32fr) minmax(330px, .68fr); gap: 64px; align-items: start; }
.paper-dossier { border-top: 3px solid var(--accent); background: var(--white); padding: 24px 24px 20px; box-shadow: 0 16px 45px rgba(41, 51, 72, .06); }
.dossier-label { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .15em; }
.paper-dossier h3 { margin: 18px 0 9px; font-size: 23px; line-height: 1.35; letter-spacing: -.02em; }
.paper-dossier > p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.paper-dossier dl { margin: 24px 0 0; border-top: 1px solid var(--line); }
.paper-dossier dl div { min-height: 44px; padding: 10px 0; display: grid; grid-template-columns: 80px 1fr; gap: 15px; border-bottom: 1px solid var(--line); align-items: baseline; }
.paper-dossier dt { color: var(--muted); font-size: 10px; }
.paper-dossier dd { margin: 0; font: 10px/1.5 var(--mono); text-align: right; }
.paper-dossier .hash { font-size: 8.5px; }
.dossier-links { margin-top: 17px; display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.dossier-links a { padding: 8px 10px; border: 1px solid var(--line); color: var(--body); text-align: center; text-decoration: none; font-size: 10px; }
.dossier-links a:hover { border-color: var(--accent); color: var(--accent); }

.wide-figure { width: 100%; margin: 52px 0 58px; }
.figure-heading { width: 100%; margin-bottom: 16px; display: grid; grid-template-columns: 1fr minmax(280px, 390px); gap: 45px; align-items: end; }
.figure-heading span { display: block; margin-bottom: 7px; color: var(--accent); font: 700 9px var(--mono); letter-spacing: .14em; }
.figure-heading h3 { margin: 0; font-size: 23px; line-height: 1.42; letter-spacing: -.025em; }
.figure-heading p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.75; }
.wide-figure > img, .data-figure > img { width: 100%; height: auto; display: block; border: 1px solid var(--line); background: var(--warm); }
.wide-figure figcaption, .data-figure figcaption { margin-top: 12px; color: var(--muted); font-size: 10.5px; line-height: 1.75; }
.wide-figure figcaption a { color: var(--accent); text-underline-offset: 3px; }
.wide-figure figcaption b, .data-figure figcaption b { color: var(--ink); }

.why-matters { padding: 29px 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: start; }
.why-matters span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .1em; }
.why-matters h3 { margin: 12px 0 0; font-size: 25px; line-height: 1.45; letter-spacing: -.03em; }
.why-matters > p { margin: 0; color: var(--body); font-size: 14px; line-height: 1.95; }

.axis-explorer { margin-top: 52px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
.axis-explorer > header { padding: 22px 0 20px; display: grid; grid-template-columns: 160px 1fr 350px; gap: 30px; align-items: baseline; }
.axis-explorer > header span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .14em; }
.axis-explorer > header h3 { margin: 0; font-size: 22px; line-height: 1.4; }
.axis-explorer > header p { margin: 0; color: var(--muted); font-size: 10.5px; line-height: 1.7; }
.explorer-tabs { min-height: 52px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: flex; gap: 0; }
.memory-tab { flex: 1; border: 0; border-right: 1px solid var(--line); background: none; color: var(--muted); cursor: pointer; font-size: 11px; }
.memory-tab:last-child { border-right: 0; }
.memory-tab:hover { color: var(--ink); }
.memory-tab.active { background: var(--dark); color: var(--white); }
.explorer-panel { min-height: 192px; display: grid; grid-template-columns: .8fr 1.2fr; }
.explorer-summary { padding: 27px 34px 27px 0; border-right: 1px solid var(--line); }
.explorer-summary > span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .08em; }
.explorer-summary h4 { margin: 13px 0 10px; font-size: 25px; }
.explorer-summary p { margin: 0; color: var(--body); font-size: 12px; line-height: 1.8; }
.axis-readouts { display: grid; grid-template-columns: repeat(3, 1fr); }
.axis-readouts > div { padding: 27px 23px; border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.axis-readouts > div:last-child { border: 0; }
.axis-readouts span { color: var(--muted); font-size: 9px; }
.axis-readouts b { margin-top: 24px; color: var(--accent); font-size: 25px; }
.axis-readouts i { margin-top: auto; color: var(--muted); font-size: 10px; font-style: normal; }
.scope-callout { margin-top: 42px; padding: 21px 24px; border-left: 3px solid var(--accent); background: var(--warm); display: grid; grid-template-columns: 150px 1fr; gap: 30px; }
.scope-callout > span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .1em; }
.scope-callout p { margin: 0; color: var(--body); font-size: 13px; line-height: 1.85; }
.scope-callout b { color: var(--ink); }

.method-index { border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: repeat(4, 1fr); }
.method-index article { min-height: 200px; padding: 25px 22px; border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.method-index article:first-child { padding-left: 0; }
.method-index article:last-child { border: 0; padding-right: 0; }
.method-index span { color: var(--accent); font: 700 8.5px var(--mono); letter-spacing: .08em; }
.method-index h3 { margin: 22px 0 10px; font-size: 20px; }
.method-index p { margin: auto 0 0; color: var(--muted); font-size: 11px; line-height: 1.75; }
.method-deep-dive { margin-top: 56px; border-top: 2px solid var(--accent); }
.method-deep-dive > header { padding: 24px 0 21px; display: grid; grid-template-columns: 210px 1fr 390px; gap: 28px; align-items: baseline; border-bottom: 1px solid var(--line); }
.method-deep-dive > header span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .1em; }
.method-deep-dive > header h3 { margin: 0; font-size: 24px; line-height: 1.4; letter-spacing: -.025em; }
.method-deep-dive > header p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.7; }
.method-body { min-height: 310px; display: grid; grid-template-columns: .82fr 1.18fr; gap: 50px; align-items: center; border-bottom: 1px solid var(--line); }
.formula-stack { min-height: 245px; padding: 27px; background: var(--dark); display: flex; flex-direction: column; justify-content: center; }
.formula-stack code { padding: 15px 0; border-bottom: 1px solid rgba(255,255,255,.15); color: var(--white); font: 15px/1.55 var(--mono); white-space: nowrap; }
.formula-stack span { margin-top: 18px; color: #ef9471; font: 9px var(--mono); letter-spacing: .12em; }
.source-line { padding-top: 12px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.source-line a { color: var(--accent); font-size: 10px; text-underline-offset: 3px; }
.source-line span { color: var(--muted); font-size: 10px; }
.hash-pipeline { display: grid; grid-template-columns: 1fr 18px 1fr 18px 1fr 18px 1fr; align-items: stretch; }
.hash-pipeline div { min-height: 170px; padding: 20px 14px; border: 1px solid var(--line); display: flex; flex-direction: column; }
.hash-pipeline div:nth-of-type(2), .hash-pipeline div:nth-of-type(4) { background: var(--warm); }
.hash-pipeline span { color: var(--accent); font: 8.5px var(--mono); }
.hash-pipeline b { margin-top: auto; font-size: 12px; line-height: 1.55; }
.hash-pipeline i { align-self: center; color: var(--accent); text-align: center; font-style: normal; }
.pool-visual { min-height: 220px; display: grid; grid-template-columns: 1fr 100px 1fr; gap: 16px; align-items: center; }
.pool-visual > b { color: var(--muted); text-align: center; font-size: 10px; line-height: 1.7; }
.old-pool, .new-pool { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; }
.old-pool > span, .new-pool > span { grid-column: 1 / -1; margin-bottom: 7px; color: var(--accent); font: 9px var(--mono); }
.old-pool i, .new-pool i { aspect-ratio: 1; background: var(--teal); opacity: .78; }
.new-pool i.fresh { background: var(--accent); opacity: 1; }
.edge-case { margin-top: 55px; padding: 27px 0; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 210px 1fr; gap: 30px; }
.edge-case > span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .12em; }
.edge-case h3 { margin: 0 0 11px; font-size: 21px; line-height: 1.45; }
.edge-case p { margin: 0; color: var(--body); font-size: 13px; line-height: 1.9; }

.update-ledger { margin-top: 46px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
.update-row { min-height: 74px; padding: 16px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 180px 1.3fr 1fr 220px; gap: 28px; align-items: start; }
.update-row:first-child { border-top: 0; }
.update-row b { font-size: 13px; }
.update-row p, .update-row em { margin: 0; color: var(--body); font-size: 11px; line-height: 1.7; font-style: normal; }
.update-row em { color: var(--accent); }
.update-head { min-height: 40px; padding: 11px 0; color: var(--muted); font: 9px var(--mono); letter-spacing: .1em; text-transform: uppercase; }

.experiment-notice { padding: 23px 25px; border-left: 3px solid var(--accent); background: var(--warm); display: grid; grid-template-columns: 155px 1fr; gap: 30px; }
.experiment-notice > span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .1em; }
.experiment-notice p { margin: 0; color: var(--body); font-size: 13px; line-height: 1.9; }
.experiment-notice b { color: var(--ink); }
.experiment-block { margin-top: 62px; }
.experiment-block > header { padding-bottom: 21px; border-bottom: 1px solid var(--line-strong); display: grid; grid-template-columns: 160px 1fr; gap: 28px; align-items: baseline; }
.experiment-block > header span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .12em; }
.experiment-block > header h3 { margin: 0; font-size: 25px; line-height: 1.4; }
.experiment-spec { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.experiment-spec dl { min-height: 108px; margin: 0; padding: 20px 19px; border-right: 1px solid var(--line); }
.experiment-spec dl:first-child { padding-left: 0; }
.experiment-spec dl:last-child { border: 0; padding-right: 0; }
.experiment-spec dt { color: var(--accent); font: 700 9px var(--mono); }
.experiment-spec dd { margin: 13px 0 0; color: var(--body); font-size: 11px; line-height: 1.7; }
.data-figure { margin: 31px 0 0; }
.before-chart { max-width: 880px; margin: 22px 0 0; }
.experiment-reading { margin-top: 20px; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 160px 1fr; gap: 28px; }
.experiment-reading > span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .1em; }
.experiment-reading p { margin: 0; color: var(--body); font-size: 12px; line-height: 1.85; }
.artifact-strip { margin-top: 56px; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: repeat(5, 1fr); }
.artifact-strip div { min-height: 80px; padding: 17px 15px; border-right: 1px solid var(--line); }
.artifact-strip div:first-child { padding-left: 0; }
.artifact-strip div:last-child { border: 0; }
.artifact-strip span { display: block; color: var(--muted); font-size: 9px; }
.artifact-strip a { display: block; margin-top: 12px; color: var(--accent); font: 9px/1.5 var(--mono); text-underline-offset: 3px; overflow-wrap: anywhere; }

.limits-grid { border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: repeat(3, 1fr); }
.limits-grid article { min-height: 225px; padding: 26px 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.limits-grid article:nth-child(3n) { border-right: 0; }
.limits-grid article:nth-last-child(-n + 3) { border-bottom: 0; }
.limits-grid article:nth-child(3n + 1) { padding-left: 0; }
.limits-grid article > span { color: var(--accent); font: 9px var(--mono); }
.limits-grid h3 { margin: 25px 0 12px; font-size: 19px; }
.limits-grid p { margin: 0; color: var(--body); font-size: 12px; line-height: 1.85; }

.lessons-lead { max-width: 920px; }
.lesson-ledger { border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
.lesson-head, .lesson-ledger article { display: grid; grid-template-columns: 1fr 1.35fr 1fr; gap: 34px; }
.lesson-head { min-height: 40px; padding: 11px 0; color: var(--muted); font: 9px var(--mono); letter-spacing: .09em; text-transform: uppercase; }
.lesson-ledger article { min-height: 105px; padding: 20px 0; border-top: 1px solid var(--line); align-items: start; }
.lesson-ledger article b { font-size: 13px; line-height: 1.6; }
.lesson-ledger article p, .lesson-ledger article em { margin: 0; color: var(--body); font-size: 11px; line-height: 1.75; font-style: normal; }
.lesson-ledger article em { color: var(--accent); }
.final-thesis { margin-top: 52px; padding: 34px 38px; background: var(--dark); display: grid; grid-template-columns: 160px 1fr; gap: 30px; }
.final-thesis > span { color: #ef9471; font: 700 9px var(--mono); letter-spacing: .12em; }
.final-thesis p { margin: 0; color: #e9edf3; font-size: 18px; line-height: 1.85; }
.final-thesis b { color: var(--white); }

.sources-section { padding-bottom: 70px; }
.source-groups { display: grid; grid-template-columns: .8fr 1.25fr .95fr; border-top: 1px solid var(--line-strong); border-bottom: 1px solid var(--line); }
.source-groups > section { padding: 24px 25px; border-right: 1px solid var(--line); }
.source-groups > section:first-child { padding-left: 0; }
.source-groups > section:last-child { border: 0; padding-right: 0; }
.source-groups h3 { margin: 0 0 20px; font-size: 15px; }
.source-groups ol { margin: 0; padding: 0; list-style: none; }
.source-groups li { padding: 13px 0; border-top: 1px solid var(--line); }
.source-groups li:first-child { border-top: 0; }
.source-groups a { color: var(--ink); font-size: 11px; font-weight: 700; text-underline-offset: 3px; }
.source-groups li span { display: block; margin-top: 6px; color: var(--muted); font-size: 9.5px; line-height: 1.65; }
.source-policy { margin-top: 35px; padding: 21px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 150px 1fr auto; gap: 30px; align-items: start; }
.source-policy > span { color: var(--accent); font: 700 9px var(--mono); letter-spacing: .1em; }
.source-policy p { margin: 0; color: var(--body); font-size: 11px; line-height: 1.8; }
.source-policy a { color: var(--accent); font-size: 10px; text-underline-offset: 3px; white-space: nowrap; }
.footer { min-height: 120px; padding: 31px 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 200px 1fr auto; gap: 30px; align-items: start; }
.footer span { color: var(--accent); font: 9px var(--mono); letter-spacing: .1em; }
.footer p { margin: 0; color: var(--muted); font-size: 10px; line-height: 1.7; }
.footer a { font-size: 10px; }

@media (max-width: 960px) {
  .hero-grid, .opening-grid { grid-template-columns: 1fr; }
  .hero-ledger { max-width: 620px; }
  .axis-explorer > header, .method-deep-dive > header { grid-template-columns: 140px 1fr; }
  .axis-explorer > header p, .method-deep-dive > header p { grid-column: 2; }
  .method-body { grid-template-columns: 1fr; gap: 25px; padding: 28px 0; }
  .update-row { grid-template-columns: 150px 1.2fr 1fr; }
  .update-row > :last-child { grid-column: 2 / -1; }
  .source-groups { grid-template-columns: 1fr 1fr; }
  .source-groups > section:nth-child(2) { border-right: 0; }
  .source-groups > section:nth-child(3) { grid-column: 1 / -1; border-top: 1px solid var(--line); }
}

@media (max-width: 720px) {
  .shell { width: min(100% - 34px, var(--shell)); }
  .topbar { min-height: 54px; padding: 0 16px; grid-template-columns: 1fr auto; }
  .topbar > span { display: none; }
  .paper-link { font-size: 10px !important; }
  .page { border: 0; }
  .hero { padding: 47px 0 26px; }
  .hero-grid { gap: 37px; }
  .hero h1 { margin: 19px 0 22px; font-size: clamp(40px, 12.5vw, 58px); line-height: 1.06; }
  .deck { font-size: 16px; line-height: 1.8; }
  .hero-actions { gap: 14px; }
  .hero-actions a { font-size: 11px; }
  .hero-meta { margin-top: 38px; grid-template-columns: 1fr 1fr; }
  .hero-meta dl { min-height: 64px; padding: 11px 12px 11px 0; border-bottom: 1px solid var(--line); }
  .hero-meta dl + dl { padding-left: 12px; }
  .hero-meta dl:nth-child(2) { border-right: 0; }
  .hero-meta dl:nth-last-child(-n + 2) { border-bottom: 0; }
  .story-section { padding: 58px 0 67px; }
  .section-heading { grid-template-columns: 28px 1fr; gap: 10px; margin-bottom: 28px; }
  .section-heading h2 { font-size: 34px; line-height: 1.18; }
  .lead-prose p, .prose p { font-size: 14px; line-height: 1.9; }
  .two-column-prose { columns: 1; }
  .paper-dossier { padding: 21px 18px 17px; }
  .figure-heading { grid-template-columns: 1fr; gap: 10px; }
  .figure-heading h3 { font-size: 20px; }
  .wide-figure { margin: 42px 0 46px; }
  .wide-figure > img, .data-figure > img { overflow: hidden; }
  .why-matters, .scope-callout, .experiment-notice, .final-thesis { grid-template-columns: 1fr; gap: 15px; }
  .why-matters h3 { font-size: 22px; }
  .axis-explorer > header { grid-template-columns: 1fr; gap: 9px; }
  .axis-explorer > header p { grid-column: 1; }
  .explorer-tabs { overflow-x: auto; }
  .memory-tab { min-width: 112px; min-height: 48px; }
  .explorer-panel { grid-template-columns: 1fr; }
  .explorer-summary { padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .axis-readouts { min-height: 150px; }
  .axis-readouts > div { padding: 20px 12px; }
  .axis-readouts b { margin-top: 18px; font-size: 21px; }
  .scope-callout { padding: 19px 18px; }
  .method-index { grid-template-columns: 1fr 1fr; }
  .method-index article { min-height: 175px; padding: 20px 17px; border-bottom: 1px solid var(--line); }
  .method-index article:first-child { padding-left: 0; }
  .method-index article:nth-child(2) { padding-right: 0; border-right: 0; }
  .method-index article:nth-child(3) { padding-left: 0; border-bottom: 0; }
  .method-index article:last-child { padding: 20px 0 20px 17px; border-bottom: 0; }
  .method-deep-dive { margin-top: 46px; }
  .method-deep-dive > header { grid-template-columns: 1fr; gap: 9px; }
  .method-deep-dive > header p { grid-column: 1; }
  .method-deep-dive > header h3 { font-size: 22px; }
  .formula-stack { padding: 20px; }
  .formula-stack code { font-size: 12px; }
  .hash-pipeline { grid-template-columns: 1fr; gap: 8px; }
  .hash-pipeline div { min-height: 82px; }
  .hash-pipeline i { transform: rotate(90deg); }
  .pool-visual { grid-template-columns: 1fr; padding: 10px 0; }
  .edge-case { grid-template-columns: 1fr; gap: 12px; }
  .update-ledger { overflow-x: auto; }
  .update-row { width: 820px; grid-template-columns: 150px 240px 190px 180px; }
  .update-row > :last-child { grid-column: auto; }
  .experiment-block { margin-top: 50px; }
  .experiment-block > header { grid-template-columns: 1fr; gap: 9px; }
  .experiment-block > header h3 { font-size: 22px; }
  .experiment-spec { grid-template-columns: 1fr 1fr; }
  .experiment-spec dl { border-bottom: 1px solid var(--line); }
  .experiment-spec dl:nth-child(2) { border-right: 0; padding-right: 0; }
  .experiment-spec dl:nth-child(3) { padding-left: 0; border-bottom: 0; }
  .experiment-spec dl:last-child { border-bottom: 0; }
  .experiment-reading { grid-template-columns: 1fr; gap: 10px; }
  .artifact-strip { grid-template-columns: 1fr 1fr; }
  .artifact-strip div { min-height: 70px; border-bottom: 1px solid var(--line); }
  .artifact-strip div:nth-child(2n) { border-right: 0; }
  .artifact-strip div:last-child { grid-column: 1 / -1; border-bottom: 0; padding-left: 0; }
  .limits-grid { grid-template-columns: 1fr; }
  .limits-grid article, .limits-grid article:nth-child(3n), .limits-grid article:nth-last-child(-n + 3) { min-height: auto; padding: 24px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .limits-grid article:last-child { border-bottom: 0; }
  .lesson-ledger { overflow-x: auto; }
  .lesson-head, .lesson-ledger article { width: 820px; grid-template-columns: 220px 320px 220px; }
  .final-thesis { padding: 27px 22px; }
  .final-thesis p { font-size: 16px; }
  .source-groups { grid-template-columns: 1fr; }
  .source-groups > section, .source-groups > section:first-child, .source-groups > section:last-child { padding: 23px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .source-groups > section:nth-child(3) { grid-column: 1; border-top: 0; border-bottom: 0; }
  .source-policy { grid-template-columns: 1fr; gap: 12px; }
  .source-policy a { white-space: normal; }
  .footer { grid-template-columns: 1fr; gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}