/* Muta IQ experiment report
   Reading layout: left chapter rail, 660px serif measure, right margin notes.
   One ink ladder, five accents, hairline rules. No cards unless a block is a control. */

:root {
  /* ink */
  --bg: #ffffff;
  --bg-soft: #faf9f7;
  --bg-tint: #f4f2ee;
  --bg-code: #f5f3ef;
  --fg: #282828;
  --fg1: #3c3836;
  --fg2: #504945;
  --fg3: #6b6866;
  --fg4: #8a8580;
  --fg5: #aaa49d;
  --rule: #e6e2db;
  --rule-strong: #cec8be;
  --brand: #ad4f31;

  /* accents — one per evidence lane, reused everywhere */
  --official: #1b6ca8;
  --official-soft: #eaf1f8;
  --parity: #b57614;
  --parity-soft: #f8f0df;
  --sensitivity: #8f3f71;
  --sensitivity-soft: #f5ebf2;
  --avx2: #31714f;
  --avx2-soft: #e9f2ed;
  --development: #7d7873;
  --development-soft: #f0eeea;
  --adopted: #427b58;
  --adopted-soft: #e9f1ec;
  --rejected: #ad2111;
  --rejected-soft: #faeae7;

  /* type */
  --serif: "Iowan Old Style", "Iowan Old Style BT", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --caption: 13px;

  /* measure */
  --measure: 660px;
  --toc-width: 190px;
  --toc-gap: 40px;
  --sidenote-width: 230px;
  --sidenote-gap: 56px;
}

@media (min-width: 1280px) { :root { --sidenote-width: 260px; } }
@media (min-width: 1400px) { :root { --sidenote-width: 290px; --sidenote-gap: 64px; } }

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
  scrollbar-width: thin;
  scrollbar-color: var(--fg5) var(--bg);
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 var(--serif);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
h1, h2, h3, h4 { font-weight: 600; text-wrap: balance; }

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  text-decoration-color: color-mix(in srgb, var(--fg4) 40%, transparent);
  transition: color .2s, text-decoration-color .2s;
}
a:hover { color: var(--fg2); text-decoration-color: var(--fg3); }

code, .mono { font-family: var(--mono); font-size: .88em; }
code { color: var(--rejected); overflow-wrap: anywhere; }
:where(h1, h2, h3, h4, dt, strong, .verdict, .editorial-table) code { color: inherit; }

[hidden] { display: none !important; }
.sr-only {
  position: absolute !important; width: 1px !important; height: 1px !important;
  padding: 0 !important; margin: -1px !important; overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important; white-space: nowrap !important; border: 0 !important;
}

:focus-visible { outline: 2px solid var(--official); outline-offset: 2px; }

/* ------------------------------------------------------------------ chrome */

.skip-link {
  position: fixed; left: 12px; top: -60px; z-index: 100;
  padding: 10px 14px; background: var(--fg); color: #fff; text-decoration: none;
}
.skip-link:focus { top: 12px; }

.reading-progress { position: fixed; z-index: 80; inset: 0 0 auto; height: 2px; background: transparent; }
.reading-progress span { display: block; width: 0; height: 100%; background: var(--fg3); }

.topbar {
  position: sticky; top: 0; z-index: 70;
  display: flex; align-items: center; gap: 28px;
  min-height: 52px; padding: 8px max(20px, calc((100vw - 1320px) / 2));
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  border-bottom: 1px solid var(--rule);
  backdrop-filter: saturate(180%) blur(12px);
  font-family: var(--sans);
}
.wordmark { display: flex; align-items: center; gap: 9px; min-width: max-content; text-decoration: none; }
.wordmark strong { font: 500 15px var(--serif); letter-spacing: .01em; }
.muta-logo { display: inline-block; width: 6.75rem; line-height: 0; }
.muta-logo img { display: block; width: 100%; height: auto; }
.wordmark small { color: var(--fg4); font: 13px var(--serif); font-style: italic; }
.wordmark:hover strong { text-decoration: underline; text-underline-offset: 3px; }
.topnav { display: flex; gap: 20px; margin-left: auto; }
.topnav a { color: var(--fg3); font-size: 13px; text-decoration: none; }
.topnav a:hover { color: var(--fg); text-decoration: underline; text-underline-offset: 3px; }
.pill {
  padding: 3px 9px; border: 1px solid var(--rule-strong); border-radius: 3px;
  color: var(--fg3); font-size: 11px; white-space: nowrap;
}
.pill.busy { color: var(--parity); border-color: color-mix(in srgb, var(--parity) 45%, transparent); background: var(--parity-soft); }

/* ------------------------------------------------------------------ layout */

.report-layout {
  display: grid;
  grid-template-columns:
    var(--toc-width)
    minmax(0, var(--measure))
    calc(var(--sidenote-gap) + var(--sidenote-width));
  column-gap: var(--toc-gap);
  width: min(100% - 3rem, calc(var(--toc-width) + var(--toc-gap) + var(--measure) + var(--sidenote-gap) + var(--sidenote-width)));
  margin-inline: auto;
}
.report-layout > .report-article { grid-column: 2; }

.contents {
  position: sticky; top: 72px; align-self: start;
  display: flex; flex-direction: column; height: calc(100vh - 72px); overflow: hidden;
  padding: 96px 8px 30px 0; font-family: var(--sans);
}
.contents-label { margin: 0 0 10px; color: var(--fg4); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; }
.contents-gate-panel { flex: 1 1 auto; min-height: 0; overflow: hidden; }
.contents-gates {
  display: flex; flex-direction: column; height: 100%; margin: 0; padding: 0; overflow: hidden; list-style: none;
}
.contents-gate:first-child { display: flex; flex: 1 1 0; flex-direction: column; min-height: 0; overflow: hidden; }
.contents-gate:first-child.contents-gate-collapsed { flex: 0 0 auto; }
.contents-gate + .contents-gate {
  flex: 0 0 auto; margin-top: auto; padding-top: 12px; border-top: 1px solid var(--rule);
}
.contents-gate:first-child.contents-gate-collapsed + .contents-gate { margin-top: 0; }
.contents-gate-toggle {
  display: flex; align-items: center; justify-content: space-between; width: 100%; min-height: 28px;
  margin: 0; padding: 3px 4px 3px 0; border: 0; background: transparent; color: var(--fg2);
  cursor: pointer; text-align: left;
}
.contents-gate-toggle::after {
  width: 6px; height: 6px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor;
  content: ""; transform: rotate(45deg); transition: transform .16s ease;
}
.contents-gate-toggle[aria-expanded="false"]::after { transform: rotate(-45deg); }
.contents-gate-toggle:hover { color: var(--fg); }
.contents-gate-label {
  display: block; color: inherit; font: 600 11px/1.35 var(--sans);
  letter-spacing: .04em; text-transform: uppercase;
}
.contents-list {
  margin: 3px 0 0 7px; padding: 0 0 0 13px; border-left: 1px solid var(--rule);
  list-style: none;
}
#gate-1-content {
  flex: 1 1 auto; min-height: 0; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin;
}
.contents a {
  display: grid; grid-template-columns: 20px 1fr; gap: 6px;
  padding: 4px 0; color: var(--fg3); font-size: 12.5px; line-height: 1.35; text-decoration: none;
}
.contents a::before { content: attr(data-chapter); color: var(--fg5); font: 10px var(--mono); }
.contents a:hover { color: var(--fg); }
.contents a.active { color: var(--fg); font-weight: 500; }
.contents a.active::before { color: var(--official); }
.contents-note {
  flex: 0 0 auto; margin: 14px 0 0; padding-top: 14px; border-top: 1px solid var(--rule);
  color: var(--fg4); font-size: 11.5px; line-height: 1.5;
}
.contents-note span:last-child { color: var(--fg2); }
.status-dot { display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: var(--fg4); }
.status-dot.official { background: var(--official); }

.report-article { min-width: 0; padding-bottom: 64px; }

/* ------------------------------------------------------------- margin notes */

/* Numbered notes float into the right rail; the marker and the note carry
   separate counters that stay in step because they are adjacent siblings. */
.report-article { counter-reset: sidenote sidenote-display; }
.margin-toggle { display: none; }
.sidenote-number { counter-increment: sidenote; cursor: default; }
.sidenote-number::after {
  content: counter(sidenote);
  font: 500 11px var(--sans); color: var(--official);
  vertical-align: super; padding-left: 1px;
}
.sidenote, .marginnote {
  float: right; clear: right;
  width: var(--sidenote-width);
  margin-right: calc(-1 * (var(--sidenote-width) + var(--sidenote-gap)));
  margin-left: var(--sidenote-gap);
  margin-top: .35rem; margin-bottom: 1.4rem;
  color: var(--fg3);
  font: 400 13.5px/1.5 var(--sans);
  position: relative;
}
.sidenote::before {
  content: counter(sidenote-display) ". ";
  color: var(--official); font-weight: 500;
}
.sidenote { counter-increment: sidenote-display; }
.sidenote code, .marginnote code { font-size: .86em; }
.sidenote strong, .marginnote strong { color: var(--fg2); font-weight: 600; }

/* ------------------------------------------------------------------- hero */

.hero { padding: 88px 0 8px; }
.eyebrow, .figure-kicker {
  margin: 0 0 14px; color: var(--fg4);
  font: 13px var(--sans); letter-spacing: .01em;
}
.hero h1 {
  margin: 0; font: 600 clamp(30px, 4.4vw, 40px)/1.25 var(--serif);
  letter-spacing: -.012em;
}
.dek { margin: 20px 0 34px; color: var(--fg2); font-size: 19px; line-height: 1.55; }

.verdict {
  padding: 24px 0 4px;
  border-top: 2px solid var(--fg); border-bottom: 1px solid var(--rule);
}
.verdict-label { margin: 0 0 8px; color: var(--fg4); font: 13px var(--sans); }
.verdict h2 { margin: 0; font: 500 20px/1.4 var(--mono); letter-spacing: -.01em; }
.verdict h2 code { font-size: .95em; }
.verdict > div:first-child > p:last-child { margin: 14px 0 24px; color: var(--fg1); font-size: 16.5px; }
.regime-result-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin-top: 18px; background: var(--rule); border-top: 1px solid var(--rule); }
.regime-result-grid article { padding: 16px; background: var(--bg); }
.regime-result-grid article.avx2-result { box-shadow: inset 0 2px var(--avx2); }
.regime-result-grid article.scalar-result { box-shadow: inset 0 2px var(--official); }
.regime-result-grid article > p { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 0 0 14px; font-family: var(--sans); }
.regime-result-grid article > p strong { font-size: 14px; }
.regime-result-grid dl { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 0; }
.regime-result-grid dl div { min-width: 0; }
.regime-result-grid dt { color: var(--fg4); font: 11px var(--sans); }
.regime-result-grid dd { margin: 3px 0 0; font: 500 16px/1.2 var(--sans); }
.verdict-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 0;
  margin: 0; border-top: 1px solid var(--rule);
}
.verdict-stats div { padding: 14px 14px 16px 0; }
.verdict-stats dt { color: var(--fg4); font: 12px var(--sans); }
.verdict-stats dd { margin: 5px 0 0; font: 500 22px/1.1 var(--sans); letter-spacing: -.02em; }
.verdict-stats small { color: var(--fg4); font-size: 12px; }

.hero-caveat {
  margin: 24px 0 0; padding-left: 16px;
  border-left: 2px solid var(--parity);
  color: var(--fg2); font-size: 15.5px;
}
.hero-caveat strong { color: var(--fg); }
.override-warning {
  margin: 18px 0 0; padding: 12px 14px;
  color: #6c450d; background: var(--parity-soft);
  border-left: 2px solid var(--parity);
  font: 14px/1.5 var(--sans);
}
.snapshot-note {
  margin: 18px 0 0; padding: 12px 14px;
  color: var(--fg2); background: var(--official-soft);
  border-left: 2px solid var(--official);
  font: 14px/1.5 var(--sans);
}
.snapshot-note strong { color: var(--fg); }
.snapshot-note code { font: 13px var(--mono); }
.artifact-line {
  display: grid; grid-template-columns: repeat(4, 1fr);
  margin: 30px 0 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
}
.artifact-line div { padding: 12px 10px 12px 0; }
.artifact-line dt { color: var(--fg4); font: 12px var(--sans); }
.artifact-line dd { margin: 4px 0 0; font: 13px/1.4 var(--sans); }

/* ---------------------------------------------------------------- chapters */

.chapter { padding: 64px 0 12px; }
.chapter + .chapter { border-top: 1px solid var(--rule); }
.chapter-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 22px; }
.chapter-number { color: var(--fg5); font: 12px var(--mono); }
.chapter-head .eyebrow { margin: 0 0 4px; }
.chapter-head h2 { margin: 0; font: 600 clamp(25px, 3.2vw, 30px)/1.3 var(--serif); letter-spacing: -.012em; }
.lead { margin: 0 0 26px; color: var(--fg); font-size: 18px; line-height: 1.58; }
.section-title { margin: 44px 0 12px; font: 600 21px/1.35 var(--serif); }
.chapter > p:not(.lead):not(.fine-print):not(.source-note) { margin: 0 0 22px; }

/* ------------------------------------------------------------------ figures */

figure { margin: 34px 0; }
figcaption {
  margin-top: 13px; color: var(--fg3);
  font: 400 var(--caption)/1.45 var(--sans); text-align: left;
}
figcaption span:first-child { color: var(--fg2); font-weight: 500; }

.equation-figure { margin: 32px 0; }
.equation {
  overflow-x: auto; padding: 22px 0;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  text-align: center; font-size: 22px;
}
math { font-family: var(--serif); }

.report-figure { margin: 34px 0; }
.svg-chart { min-height: 240px; width: 100%; }
.svg-chart svg { display: block; width: 100%; height: auto; overflow: visible; font-family: var(--sans); }
.tall-chart { min-height: 310px; }
.svg-chart .svg-axis, .svg-chart .svg-foot { font-size: 11px; fill: var(--fg4); }
.figure-head {
  display: flex; justify-content: space-between; align-items: baseline; gap: 18px;
  margin-bottom: 16px; padding-bottom: 10px; border-bottom: 1px solid var(--rule);
}
.figure-head h3 { margin: 0; font: 600 17px/1.35 var(--serif); }
.figure-head .figure-kicker { margin: 0 0 3px; font-size: 12px; }
.chart-legend { display: flex; gap: 14px; color: var(--fg3); font: 12px var(--sans); white-space: nowrap; }
.chart-legend span::before {
  content: ""; display: inline-block; width: 7px; height: 7px;
  margin-right: 5px; border-radius: 50%; background: var(--adopted);
}
.chart-legend .audit::before { background: var(--official); }
.chart-legend .scalar::before { background: var(--parity); }
.chart-legend .avx2::before { background: var(--avx2); }
.chart-legend .control::before { background: #b8afa3; }
.chart-legend .tuned::before { background: var(--official); }
.compact-chart { min-height: 220px; }
.finetune-chart-grid .report-figure { min-width: 0; }

/* figures that need more than the measure reach into the note rail */
.wide-figure, .campaign-summary-grid, .editorial-table-wrap, .profiler-workspace {
  width: calc(100% + var(--sidenote-gap) + var(--sidenote-width));
}

.evidence-badge {
  display: inline-flex; align-items: center; width: max-content;
  padding: 2px 7px; border-radius: 2px;
  font: 500 11px var(--sans); letter-spacing: .02em;
}
.evidence-badge.official { color: var(--official); background: var(--official-soft); }
.evidence-badge.parity { color: var(--parity); background: var(--parity-soft); }
.evidence-badge.sensitivity { color: var(--sensitivity); background: var(--sensitivity-soft); }
.evidence-badge.avx2 { color: var(--avx2); background: var(--avx2-soft); }
.evidence-badge.development, .evidence-badge.archive { color: var(--development); background: var(--development-soft); }

/* ------------------------------------------------------------ interactive */

input[type="checkbox"] { width: 15px; height: 15px; margin: 0; accent-color: var(--official); }

/* ---------------------------------------------------------------- asides */

.design-note {
  margin: 32px 0; padding: 16px 0 0;
  border-top: 1px solid var(--adopted);
}
.design-note-label { margin: 0 0 6px !important; color: var(--adopted); font: 500 12px var(--sans) !important; letter-spacing: .02em; }
.design-note p:last-child { margin: 0 !important; color: var(--fg1); font-size: 16px !important; }
.warning-note { border-top-color: var(--parity); }
.warning-note .design-note-label { color: var(--parity); }

.reasoning-check { margin: 22px 0; border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.reasoning-check + .reasoning-check { margin-top: -23px; border-top: 0; }
.reasoning-check summary { padding: 14px 2px; cursor: pointer; color: var(--fg2); font: 14.5px var(--sans); }
.reasoning-check summary:hover { color: var(--fg); }
.reasoning-check summary::marker { color: var(--fg5); }
.reasoning-check div { padding: 0 0 16px 20px; color: var(--fg2); font-size: 16px; }
.reasoning-check p { margin: 0; }

/* ----------------------------------------------------------------- blocks */

.evidence-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; margin: 30px 0; background: var(--rule); border: 1px solid var(--rule); }
.evidence-card { padding: 18px 18px 20px; background: var(--bg); border-top: 2px solid var(--development); }
.evidence-card.official { border-top-color: var(--official); }
.evidence-card.parity { border-top-color: var(--parity); }
.evidence-card.sensitivity { border-top-color: var(--sensitivity); }
.evidence-card.avx2 { border-top-color: var(--avx2); }
.evidence-card h3 { margin: 6px 0 6px; font: 600 17px var(--serif); }
.evidence-card > p:last-child { margin: 0; color: var(--fg2); font-size: 14.5px; line-height: 1.5; }
.evidence-label { margin: 0; color: var(--development); font: 12px var(--sans); }
.evidence-label span { display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: currentColor; }
.evidence-card.official .evidence-label { color: var(--official); }
.evidence-card.avx2 .evidence-label { color: var(--avx2); }
.evidence-card.parity .evidence-label { color: var(--parity); }
.evidence-card.sensitivity .evidence-label { color: var(--sensitivity); }

.method-section { margin-top: 30px; padding-top: 22px; border-top: 1px solid var(--rule); }
.method-section h3 { margin: 6px 0 12px; font: 600 19px var(--serif); }
.finding-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px; margin-top: 26px; }
.finding-pair article { padding: 18px 0; border-top: 1px solid var(--rule); }
.finding-pair h3 { margin: 6px 0 7px; font: 600 16px var(--serif); }
.finding-pair article > p:last-child { margin: 0; color: var(--fg2); font-size: 14.5px; line-height: 1.5; }
.overnight-decision-grid article { padding: 20px; border: 1px solid var(--rule); background: var(--bg); }
.overnight-decision-grid .preferred-decision { border-top: 3px solid var(--adopted); }
.compact-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 18px; margin: 14px 0 16px; }
.compact-metrics div { display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--rule); padding-bottom: 5px; }
.compact-metrics dt { color: var(--muted); font-size: 12px; }
.compact-metrics dd { margin: 0; color: var(--fg); font: 700 13px var(--sans); }
.method-table td:first-child { width: 20%; font-weight: 700; }
.method-table td:last-child { width: 32%; }
#overnight-finalist-table td small { display: block; color: var(--muted); margin-top: 3px; white-space: nowrap; }
#overnight-screen-table code { font-size: 11px; }
.result-tag { margin: 0; font: 500 12px var(--sans); }
.result-tag.rejected { color: var(--rejected); }
.result-tag.adopted { color: var(--adopted); }

.experiment-sequence { margin: 34px 0; border-top: 1px solid var(--rule-strong); }
.experiment-sequence article {
  display: grid; grid-template-columns: 30px 150px 1fr 74px; gap: 14px;
  align-items: baseline; padding: 16px 0; border-bottom: 1px solid var(--rule);
}
.experiment-sequence article > span { color: var(--fg5); font: 11px var(--mono); }
.experiment-sequence h3 { margin: 0; font: 600 15px var(--serif); }
.experiment-sequence p { margin: 0; color: var(--fg2); font: 13.5px/1.5 var(--sans); }
.experiment-sequence strong { color: var(--adopted); font: 500 12px var(--sans); text-align: right; }
.experiment-sequence article:not(:first-child) strong { color: var(--rejected); }


.campaign-summary-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin: 32px 0; }
.campaign-summary-grid .report-figure { min-width: 0; margin: 0; }

.editorial-table-wrap { overflow-x: auto; margin: 30px 0 26px; }
.editorial-table { width: 100%; min-width: 620px; border-collapse: collapse; font: 13.5px/1.4 var(--sans); }
.editorial-table th {
  padding: 9px 10px; color: var(--fg3); background: var(--bg-tint);
  border: 1px solid var(--rule-strong);
  font-size: 12px; font-weight: 500; text-align: right;
}
.editorial-table th:first-child, .editorial-table td:first-child { text-align: left; }
.editorial-table td { padding: 11px 10px; border: 1px solid var(--rule); text-align: right; vertical-align: top; }
.editorial-table td small { display: block; color: var(--fg4); font-size: 11.5px; }
.editorial-table .selected-row { background: var(--official-soft); }
.editorial-table .selected-row td { border-color: color-mix(in srgb, var(--official) 25%, var(--rule)); }

.isa-policy {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin: 28px 0 20px; padding: 12px;
  background: var(--bg-soft); border: 1px solid var(--rule);
}
.isa-policy span {
  display: inline-flex; align-items: center; gap: 8px;
  min-width: 94px; padding: 5px 9px;
  color: var(--avx2); background: var(--avx2-soft);
  border: 1px solid color-mix(in srgb, var(--avx2) 24%, var(--rule));
  font: 11.5px var(--sans);
}
.isa-policy code { color: inherit; }
.isa-policy strong { margin-left: auto; font-size: 10.5px; letter-spacing: .04em; }
.isa-policy .disabled { color: var(--fg3); background: var(--development-soft); border-color: var(--rule); }

.avx2-table { min-width: 970px; }
.editorial-table .avx2-selected-row { background: var(--avx2-soft); }
.editorial-table .avx2-selected-row td { border-color: color-mix(in srgb, var(--avx2) 25%, var(--rule)); }
.avx2-note { border-top-color: var(--avx2); }
.avx2-note .design-note-label { color: var(--avx2); }
.measurement-disclosure > div { padding: 0 0 16px; }
.measurement-disclosure .table-wrap { padding: 0; }
.models .avx2-winner-row { background: var(--avx2-soft); }
.models .avx2-winner-row td { border-color: color-mix(in srgb, var(--avx2) 25%, var(--rule)); }

.sensitivity-result {
  display: flex; align-items: baseline; gap: 10px;
  margin: 18px 0 0; padding: 14px 0;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  font-family: var(--sans);
}
.sensitivity-result span { color: var(--fg4); font-size: 12px; }
.sensitivity-result strong { color: var(--sensitivity); font-size: 17px; font-weight: 500; }
.sensitivity-result small { color: var(--fg4); }

/* ----------------------------------------------------------------- ledger */

.filter-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 24px 0 16px; }
.filter-button {
  padding: 5px 11px; color: var(--fg3); background: transparent;
  border: 1px solid var(--rule-strong); border-radius: 2px; cursor: pointer;
  font: 13px var(--sans);
}
.filter-button:hover { color: var(--fg); border-color: var(--fg4); }
.filter-button.active { color: var(--bg); background: var(--fg); border-color: var(--fg); }
.ledger { border-top: 1px solid var(--rule-strong); }
.ledger-entry {
  display: grid; grid-template-columns: 92px 170px 1fr 130px; gap: 16px;
  padding: 14px 0; border-bottom: 1px solid var(--rule);
}
.ledger-status {
  width: max-content; height: max-content; padding: 2px 7px; border-radius: 2px;
  font: 500 11px var(--sans); letter-spacing: .02em;
}
.ledger-status.adopted { color: var(--adopted); background: var(--adopted-soft); }
.ledger-status.rejected { color: var(--rejected); background: var(--rejected-soft); }
.ledger-status.neutral { color: var(--parity); background: var(--parity-soft); }
.ledger-status.deferred { color: var(--sensitivity); background: var(--sensitivity-soft); }
.ledger-entry h3 { margin: 0; font: 600 14.5px/1.35 var(--serif); }
.ledger-entry p { margin: 0; color: var(--fg2); font: 13px/1.5 var(--sans); }
.ledger-entry .ledger-source { color: var(--fg4); font: 11px/1.5 var(--mono); overflow-wrap: anywhere; }

/* -------------------------------------------------------------------- faq */

.faq-list { border-top: 1px solid var(--rule-strong); }
.faq-item { border-bottom: 1px solid var(--rule); }
.faq-item summary {
  display: grid; grid-template-columns: 28px 1fr auto; gap: 12px; align-items: baseline;
  padding: 14px 2px; cursor: pointer; list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--fg4); font: 16px/1 var(--sans); }
.faq-item[open] summary::after { content: "−"; }
.faq-item summary:hover .faq-question { color: var(--fg); }
.faq-number { color: var(--fg5); font: 11px/1.6 var(--mono); }
.faq-question { color: var(--fg1); font: 15px/1.45 var(--serif); }
.faq-body { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: 2px 40px 20px; }
.faq-body div { min-height: 40px; }
.faq-body h4 { margin: 0 0 5px; color: var(--fg4); font: 400 12px var(--sans); }
.faq-body p { margin: 0; color: var(--fg2); font: 14px/1.5 var(--sans); }
.faq-body .empty-progress { min-height: 26px; border-bottom: 1px dotted var(--fg5); }
.source-note { color: var(--fg4); font: var(--caption)/1.5 var(--sans); }

/* -------------------------------------------------------- profiler appendix */

.profiler-workspace { font-family: var(--sans); }
.profiler-workspace .lead { font-family: var(--serif); }
.workspace-bar {
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  margin: 24px 0 12px; padding: 13px 16px;
  background: var(--bg-tint); border: 1px solid var(--rule);
}
.workspace-bar strong { font-size: 13px; font-weight: 500; }
.workspace-bar p { margin: 3px 0 0; color: var(--fg3); font: 11.5px/1.4 var(--mono); }
.quick-toggle { display: flex; align-items: center; gap: 8px; white-space: nowrap; font: 13px var(--sans); }
.quick-toggle small { color: var(--fg4); }

.card { margin: 12px 0; padding: 18px; background: var(--bg); border: 1px solid var(--rule); }
.workspace-disclosure > summary {
  display: grid; grid-template-columns: max-content 1fr; align-items: center; gap: 6px 12px;
  cursor: pointer; list-style: none;
}
.workspace-disclosure > summary::-webkit-details-marker { display: none; }
.workspace-disclosure > summary::after {
  content: "+"; grid-column: 3; grid-row: 1; color: var(--fg4); font: 17px/1 var(--sans);
}
.workspace-disclosure[open] > summary::after { content: "−"; }
.workspace-disclosure > summary > strong { font: 600 16px var(--serif); }
.workspace-disclosure > summary > .sub { grid-column: 1 / -1; }
.workspace-disclosure[open] > summary { margin-bottom: 16px; }
.card-head { margin-bottom: 14px; }
.card-head.row { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.card h3 { margin: 6px 0 3px; font: 600 16px var(--serif); }
.sub { margin: 0; color: var(--fg3); font-size: 13px; }

.table-wrap { overflow-x: auto; }
table.models { width: 100%; border-collapse: collapse; font-size: 13px; }
table.models th {
  padding: 8px; color: var(--fg3); background: var(--bg-tint);
  border-bottom: 1px solid var(--rule-strong);
  font-size: 12px; font-weight: 500; text-align: left; white-space: nowrap;
}
table.models td { padding: 10px 8px; border-bottom: 1px solid var(--rule); vertical-align: top; white-space: nowrap; }
table.models tbody tr:last-child td { border-bottom: 0; }
.model-name { color: var(--fg); font-weight: 500; }
.model-sub { max-width: 360px; margin-top: 3px; color: var(--fg4); font-size: 11.5px; white-space: normal; }
.model-actions { display: flex; gap: 5px; margin-top: 8px; }
.total { color: var(--fg); font-weight: 600; }
.center { text-align: center; }
.dim { color: var(--fg5) !important; }
.formula { margin: 14px 0 0; color: var(--fg4); font: 12px/1.6 var(--sans); }
.row-end { display: flex; align-items: center; gap: 10px; }
.elapsed { color: var(--fg3); }

.btn {
  padding: 5px 10px; color: var(--fg2); background: var(--bg);
  border: 1px solid var(--rule-strong); border-radius: 2px; cursor: pointer;
  font: 12.5px var(--sans);
}
.btn:hover { color: var(--fg); border-color: var(--fg4); background: var(--bg-soft); }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn.primary { color: var(--official); border-color: color-mix(in srgb, var(--official) 45%, transparent); }
.btn.danger { color: var(--rejected); border-color: color-mix(in srgb, var(--rejected) 40%, transparent); }
.btn.small { padding: 3px 8px; font-size: 11.5px; }

.chip {
  display: inline-flex; align-items: center; gap: 5px; margin: 1px 2px;
  padding: 2px 7px; border: 1px solid var(--rule-strong); border-radius: 99px;
  color: var(--fg3); font-size: 11px;
}
.chip .dot { width: 5px; height: 5px; border-radius: 50%; background: var(--fg4); }
.chip.good .dot { background: var(--adopted); }
.chip.warning .dot, .chip.serious .dot { background: var(--parity); }
.chip.critical .dot { background: var(--rejected); }
.chip.neutral .dot { background: var(--official); }

.log {
  max-height: 300px; overflow: auto; margin: 0; padding: 12px;
  color: var(--fg2); background: var(--bg-code); border: 1px solid var(--rule);
  border-radius: 4px; font: 12px/1.5 var(--mono); white-space: pre-wrap;
}
.log.tall { max-height: 65vh; }

.chart { padding: 4px 0 16px; }
.chart-row { display: grid; grid-template-columns: minmax(150px, 250px) 1fr 44px; gap: 10px; align-items: center; margin: 7px 0; }
.chart-label { overflow: hidden; color: var(--fg2); font-size: 12px; text-align: right; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { height: 12px; background: var(--bg-tint); }
.bar { height: 100%; min-width: 2px; background: var(--official); }
.chart-value { color: var(--fg); font-size: 12px; font-weight: 500; text-align: right; }
.chart-axis { display: grid; grid-template-columns: minmax(150px, 250px) 1fr 44px; gap: 10px; }
.ticks { position: relative; height: 18px; border-top: 1px solid var(--rule); }
.ticks span { position: absolute; top: 4px; color: var(--fg4); font-size: 10px; transform: translateX(-50%); }
.chart-empty { color: var(--fg4); font-size: 13px; }
.history-row > td { padding: 0 8px 14px !important; background: var(--bg-soft); }
table.history { width: 100%; border-collapse: collapse; font-size: 11.5px; }

.modal { position: fixed; z-index: 100; inset: 0; display: grid; place-items: center; padding: 24px; background: rgba(40, 40, 40, .38); backdrop-filter: blur(2px); }
.modal-box { width: min(900px, 96vw); padding: 18px; background: var(--bg); border: 1px solid var(--rule-strong); border-radius: 4px; box-shadow: 0 20px 60px rgba(0, 0, 0, .18); }
.modal-head { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 12px; }
.modal-head h3 { margin: 0; font: 600 15px var(--serif); }

.tooltip {
  position: fixed; z-index: 110; width: 235px; padding: 11px;
  color: var(--fg2); background: var(--bg); border: 1px solid var(--rule-strong);
  border-radius: 4px; box-shadow: 0 8px 26px rgba(0, 0, 0, .12);
  font: 12px var(--sans); pointer-events: none;
}
.tt-title { margin-bottom: 7px; color: var(--fg); font-weight: 500; }
.tt-grid { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; }
.tt-grid span { color: var(--fg4); }

.report-footer {
  margin-top: 72px; padding: 24px 0; border-top: 1px solid var(--rule);
  color: var(--fg4); font: var(--caption)/1.7 var(--sans);
}
.report-footer p { margin: 4px 0; }
.gate-two-entry {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; margin-top: 14px;
  color: var(--fg2); font: 500 13px var(--sans); text-decoration: none;
}
.gate-two-entry:hover { color: var(--official); }

/* -------------------------------------------------------- Gate 2 chapters */

.gate-two-report { padding-top: 48px; }
.gate-two-nav {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  color: var(--fg3); font-family: var(--serif);
}
.gate-two-nav a { text-decoration: none; }
.gate-two-nav a:hover { color: var(--fg); }
.gate-two-nav-top { min-height: 48px; margin-bottom: 48px; }
.gate-two-back, .gate-two-step {
  display: inline-flex; align-items: center; gap: 9px; min-height: 44px;
}
.gate-two-nav-pair { display: flex; align-items: center; gap: 24px; }
.gate-two-step[data-gate-two-direction="next"] { justify-content: flex-end; }
.gate-two-page {
  min-height: max(430px, calc(100vh - 330px));
  scroll-margin-top: 80px;
}
.gate-two-page h1 {
  margin: 8px 0 18px; color: var(--fg); font-size: clamp(42px, 7vw, 66px);
  line-height: 1.05; letter-spacing: -.025em;
}
.gate-two-eyebrow {
  margin: 0; color: var(--fg3); font: 500 15px/1.5 var(--serif);
}
.gate-two-dek {
  max-width: 620px; margin: 0 0 56px; color: var(--fg3);
  font-size: clamp(19px, 2.5vw, 24px); line-height: 1.55;
}
.gate-two-placeholder {
  max-width: 610px; padding: 30px 0 34px; border-block: 1px solid var(--rule);
}
.gate-two-placeholder .placeholder-label {
  margin: 0 0 10px; color: var(--official);
  font: 600 11px/1.4 var(--sans); letter-spacing: .07em; text-transform: uppercase;
}
.gate-two-placeholder h2 { margin: 0 0 12px; font-size: 27px; line-height: 1.25; }
.gate-two-placeholder p:last-child { margin: 0; color: var(--fg2); }
.gate-two-research { color: var(--fg1); }
.gate-two-research-head {
  margin-bottom: 10px; padding: 28px 0 24px;
  border-block: 1px solid var(--rule);
}
.gate-two-research .placeholder-label,
.gate-two-finetune .placeholder-label {
  margin: 0 0 10px; color: var(--official);
  font: 600 11px/1.4 var(--sans); letter-spacing: .07em; text-transform: uppercase;
}
.gate-two-research-head h2 { margin: 0; font-size: clamp(27px, 4vw, 36px); line-height: 1.2; }
.gate-two-research-section { padding-top: 38px; scroll-margin-top: 80px; }
.gate-two-research-section + .gate-two-research-section { margin-top: 8px; border-top: 1px solid var(--rule); }
.gate-two-research-section h2 { margin: 0 0 14px; font: 600 25px/1.3 var(--serif); letter-spacing: -.01em; }
.gate-two-research-section h3 { margin: 30px 0 10px; font: 600 19px/1.35 var(--serif); }
.gate-two-research-section > p { margin: 0 0 20px; }
.gate-two-table-wrap {
  max-width: 100%; margin-block: 26px 30px;
  overscroll-behavior-inline: contain;
}
.gate-two-table-wrap::before { display: none; }
.gate-two-table-wrap:focus-visible { outline: 2px solid var(--official); outline-offset: 3px; }
.gate-two-research-table { min-width: 760px; }
.gate-two-research-table.research-table-wide { min-width: 1080px; }
.gate-two-research-table th,
.gate-two-research-table td { text-align: left; }
.gate-two-research-table th { vertical-align: bottom; }
.gate-two-research-table tbody th {
  padding: 11px 10px; color: inherit; background: transparent;
  border: 1px solid var(--rule); font-size: inherit; font-weight: 400; vertical-align: top;
}
.gate-two-research-table td:nth-child(2) { font-variant-numeric: tabular-nums; }
.gate-two-research-table sup { white-space: nowrap; }
.gate-two-equation {
  padding: 18px 0; border-block: 1px solid var(--rule);
  color: var(--fg); font: 16px/1.55 var(--sans);
}
.gate-two-command {
  overflow-x: auto; margin: 20px 0 22px; padding: 18px;
  color: var(--fg2); background: var(--bg-code); border: 1px solid var(--rule);
  font: 13px/1.55 var(--mono); white-space: pre;
}
.gate-two-selection {
  margin-top: 38px !important; padding: 26px 0 8px;
  border-top: 2px solid var(--adopted) !important;
}
.gate-two-selection .placeholder-label { color: var(--adopted); }
.gate-two-campaign { color: var(--fg1); }
.gate-two-finetune { color: var(--fg1); }
.gate-two-lesson {
  margin: 28px 0 30px; padding: 4px 0 4px 22px;
  border-left: 3px solid var(--parity);
}
.gate-two-lesson p { margin: 0; color: var(--fg1); font-size: 18px; line-height: 1.6; }
.gate-two-list { margin: 0 0 24px; padding-left: 22px; }
.gate-two-list li { margin-bottom: 10px; padding-left: 4px; }
.gate-two-list li::marker { color: var(--fg5); }
.finetune-score-table { min-width: 1020px; }
.gate-two-protocol-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0 28px;
  margin: 24px 0 8px; border-top: 1px solid var(--rule);
}
.gate-two-protocol-grid > div { padding: 22px 0 6px; border-bottom: 1px solid var(--rule); }
.gate-two-protocol-grid h3 { margin: 0 0 8px; font: 600 17px/1.35 var(--serif); }
.gate-two-protocol-grid p { margin: 0; color: var(--fg2); font-size: 15px; }
.gate-two-figure { margin-block: 28px 32px; }
.gate-two-figure .chart {
  max-width: 100%; overflow-x: auto; overscroll-behavior-inline: contain;
  scrollbar-width: thin; scrollbar-color: var(--fg5) transparent;
}
.gate-two-figure .chart svg { display: block; width: max(100%, 960px); height: auto; }
.gate-two-figure figcaption { margin-top: 14px; color: var(--fg3); font: 13px/1.55 var(--sans); }
.compact-legend { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-bottom: 12px; color: var(--fg3); font: 12px var(--sans); }
.compact-legend span { display: inline-flex; align-items: center; gap: 7px; }
.legend-swatch { display: inline-block; width: 9px; height: 9px; }
.legend-swatch.scalar { background: var(--parity); }
.legend-swatch.avx2 { background: var(--avx2); }
.legend-swatch.official { background: var(--official); }
.legend-swatch.diagnostic { background: var(--development); }
.gate-two-results-table td { font-variant-numeric: tabular-nums; white-space: nowrap; }
.gate-two-results-table th[scope="row"] { min-width: 205px; }
.resource-results-table { min-width: 1120px; }
.gate-two-candidate-table { min-width: 1000px; }
.gate-two-research-table .muted-row { color: var(--fg4); background: var(--bg-soft); }
.gate-two-evidence-note {
  margin-top: 28px; padding: 18px 0; border-block: 1px solid var(--parity);
  color: var(--fg2); font: 14px/1.6 var(--sans);
}
.gate-two-evidence-note strong { color: var(--parity); }
.gate-two-evidence-explorer {
  margin: 28px 0 34px; padding: 24px; background: var(--bg-soft); border: 1px solid var(--rule);
}
.gate-two-evidence-controls { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; }
.gate-two-evidence-controls label { color: var(--fg3); font: 600 11px/1.4 var(--sans); letter-spacing: .04em; text-transform: uppercase; }
.gate-two-evidence-controls select {
  display: block; width: 100%; min-height: 44px; margin-top: 6px; padding: 8px 30px 8px 10px;
  color: var(--fg); background: var(--bg); border: 1px solid var(--rule-strong); border-radius: 2px;
  font: 15px/1.3 var(--sans); letter-spacing: normal; text-transform: none;
}
.gate-two-evidence-controls select:disabled { color: var(--fg4); background: var(--bg-tint); }
.gate-two-evidence-status { margin: 16px 0 0; color: var(--fg3); font: 13px/1.5 var(--sans); }
.gate-two-evidence-view { margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--rule); }
.gate-two-evidence-meta { display: grid; grid-template-columns: max-content 1fr; gap: 4px 18px; margin: 0 0 24px; font: 13px/1.5 var(--sans); }
.gate-two-evidence-meta dt { color: var(--fg4); }
.gate-two-evidence-meta dd { margin: 0; color: var(--fg2); overflow-wrap: anywhere; }
.gate-two-evidence-view section { margin-top: 22px; }
.gate-two-evidence-view h3 { margin: 0 0 8px; color: var(--fg3); font: 600 12px/1.4 var(--sans); letter-spacing: .04em; text-transform: uppercase; }
.gate-two-evidence-view pre {
  max-width: 100%; max-height: 520px; overflow: auto; margin: 0; padding: 16px;
  color: var(--fg1); background: var(--bg); border: 1px solid var(--rule);
  font: 13px/1.55 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere;
}
.gate-two-evidence-view #g2-evidence-review { color: var(--fg2); font: 14px/1.55 var(--sans); }
.gate-two-evidence-view #g2-evidence-review p { margin: 0; }
.gate-two-evidence-view #g2-evidence-review ul { margin: 12px 0 0; padding-left: 22px; }
.gate-two-downloads-details { font: 13px/1.5 var(--sans); }
.gate-two-downloads-details summary { min-height: 44px; padding: 11px 0; color: var(--fg2); cursor: pointer; }
.gate-two-downloads { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 20px; padding-top: 10px; }
.gate-two-downloads a { overflow-wrap: anywhere; }
.gate-two-source-section { color: var(--fg2); }
.gate-two-sources {
  margin: 22px 0 0; padding-left: 34px;
  font: 13px/1.55 var(--sans);
}
.gate-two-sources li { margin-bottom: 9px; padding-left: 4px; scroll-margin-top: 80px; }
.gate-two-sources li::marker { color: var(--fg5); font-family: var(--mono); }
.gate-two-nav-footer {
  margin-top: 64px; padding: 28px 0 72px; border-top: 1px solid var(--rule);
}
.gate-two-footer-link {
  display: flex; align-items: center; gap: 18px; min-width: 0; min-height: 72px;
  text-decoration: none;
}
.gate-two-footer-link.next { margin-left: auto; text-align: right; }
.gate-two-footer-direction {
  display: block; margin-bottom: 4px; color: var(--fg4);
  font: 600 10px/1.2 var(--sans); letter-spacing: .08em; text-transform: uppercase;
}
.gate-two-footer-link strong {
  display: block; max-width: 240px; color: var(--fg3); font-size: 17px; line-height: 1.3;
}
.gate-two-footer-link:hover strong { color: var(--fg); }
.gate-two-footer-arrow { flex: 0 0 auto; color: var(--fg3); font-size: 24px; }
.noscript { padding: 16px; color: #fff; background: var(--rejected); text-align: center; }

/* ------------------------------------------------------------- responsive */

/* No room for a note rail: notes fall into the flow as indented blocks. */
@media (max-width: 1180px) {
  .report-layout {
    grid-template-columns: var(--toc-width) minmax(0, var(--measure));
    width: min(100% - 3rem, calc(var(--toc-width) + var(--toc-gap) + var(--measure)));
  }
  .sidenote, .marginnote {
    /* these are spans: without display:block, clearing the float drops the
       note back into the middle of the sentence that referenced it */
    display: block; float: none; width: auto;
    margin: 14px 0 20px 24px; padding-left: 16px;
    border-left: 2px solid var(--rule-strong);
  }
  .wide-figure, .campaign-summary-grid, .editorial-table-wrap, .profiler-workspace { width: 100%; }
}

@media (max-width: 940px) {
  .topnav { display: none; }
  .report-layout { display: block; width: min(100% - 2.5rem, var(--measure)); }
  .contents { display: none; }
  .hero { padding-top: 56px; }
  .gate-two-report { padding-top: 30px; }
  .verdict-stats { grid-template-columns: 1fr 1fr; }
  .artifact-line { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  .gate-two-downloads { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  html { scroll-padding-top: 64px; }
  body { font-size: 16px; }
  .topbar { padding-inline: 16px; }
  .topbar .pill { margin-left: auto; max-width: 130px; overflow: hidden; text-overflow: ellipsis; }
  .wordmark small { display: none; }
  .gate-two-nav-top { margin-bottom: 36px; }
  .gate-two-nav-pair { gap: 14px; }
  .gate-two-page { min-height: max(390px, calc(100vh - 290px)); }
  .gate-two-page h1 { font-size: clamp(38px, 13vw, 54px); }
  .gate-two-dek { margin-bottom: 40px; font-size: 18px; }
  .gate-two-placeholder { padding-block: 24px 28px; }
  .gate-two-placeholder h2 { font-size: 23px; }
  .gate-two-research-head { padding-block: 24px 20px; }
  .gate-two-research-section { padding-top: 30px; }
  .gate-two-research-section h2 { font-size: 23px; }
  .gate-two-table-wrap { width: 100%; }
  .gate-two-table-wrap::before {
    content: "Scroll table →"; display: block; position: sticky; left: 0; width: max-content;
    margin-bottom: 8px; color: var(--fg4);
    font: 600 10px/1.4 var(--sans); letter-spacing: .06em; text-transform: uppercase;
  }
  .gate-two-command { font-size: 12px; }
  .gate-two-protocol-grid { grid-template-columns: 1fr; }
  .gate-two-figure .chart::before {
    content: "Scroll chart →"; display: block; position: sticky; left: 0; width: max-content;
    margin-bottom: 8px; color: var(--fg4);
    font: 600 10px/1.4 var(--sans); letter-spacing: .06em; text-transform: uppercase;
  }
  .gate-two-evidence-explorer { padding: 18px; }
  .gate-two-evidence-controls { grid-template-columns: 1fr; }
  .gate-two-evidence-meta { grid-template-columns: 1fr; gap: 0; }
  .gate-two-evidence-meta dd + dt { margin-top: 8px; }
  .gate-two-nav-footer { margin-top: 48px; padding-bottom: 48px; }
  .gate-two-footer-link { gap: 10px; }
  .gate-two-footer-link strong { max-width: 180px; font-size: 15px; }
  .dek { font-size: 17px; }
  .lead { font-size: 17px; }
  .chapter { padding-top: 48px; }
  .controls-grid, .score-breakdown, .evidence-grid, .finding-pair,
  .campaign-summary-grid { grid-template-columns: 1fr; }
  .report-article { overflow-x: clip; }
  .regime-result-grid { grid-template-columns: 1fr; }
  .score-breakdown { gap: 1px; }
  .finding-pair { gap: 0; }
  .svg-chart { overflow-x: auto; overscroll-behavior-inline: contain; }
  #runtime-chart svg, #model-funnel-chart svg, #sensitivity-chart svg { min-width: 600px; }
  #isa-score-chart svg { min-width: 760px; }
  #overnight-avx2-score-chart { min-height: 240px; }
  #overnight-avx2-score-chart svg { min-width: 620px; }
  #overnight-score-chart svg, #overnight-quant-chart svg { min-width: 0; }
  #streaming-chart svg { min-width: 420px; }
  .submission-classification svg { min-width: 700px; }
  .experiment-sequence article { grid-template-columns: 26px 1fr 62px; }
  .experiment-sequence p { grid-column: 2 / -1; }
  .ledger-entry { grid-template-columns: 88px 1fr; }
  .ledger-entry p, .ledger-entry .ledger-source { grid-column: 2; }
  .faq-body { grid-template-columns: 1fr; padding-left: 40px; }
  .workspace-bar { align-items: stretch; flex-direction: column; gap: 10px; }
  .quick-toggle { white-space: normal; }
  .card { padding: 14px; }
}

@media (max-width: 480px) {
  .verdict-stats, .artifact-line { grid-template-columns: 1fr; }
  .equation { font-size: 17px; }
  .experiment-sequence article { grid-template-columns: 22px 1fr; }
  .experiment-sequence strong { grid-column: 2; text-align: left; }
  .sensitivity-result { align-items: flex-start; flex-direction: column; gap: 3px; }
  .faq-body { padding-left: 18px; }
  .chart-row, .chart-axis { grid-template-columns: 100px 1fr 36px; }
  .sidenote, .marginnote { margin-left: 0; }
  .gate-two-nav-top { align-items: flex-start; flex-direction: column; gap: 4px; }
  .gate-two-nav-pair { align-self: stretch; justify-content: space-between; }
  .gate-two-nav-footer { align-items: stretch; flex-direction: column; gap: 12px; }
  .gate-two-footer-link { width: 100%; min-height: 64px; }
  .gate-two-footer-link.next { justify-content: flex-end; margin-left: 0; }
  .gate-two-footer-link strong { max-width: 250px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

@media print {
  .topbar, .contents, .reading-progress, .filter-row, .profiler-workspace,
  .modal, .tooltip, .skip-link { display: none !important; }
  body { font-size: 11pt; }
  .report-layout { display: block; width: 100%; }
  .report-article { max-width: 100%; }
  .hero { padding-top: 0; }
  .chapter { break-before: page; }
  .sidenote, .marginnote {
    display: block; float: none; width: auto; margin: 10px 0 14px 20px;
    padding-left: 14px; border-left: 1px solid #999;
  }
  .report-figure, .verdict, .equation-figure, .isa-policy { break-inside: avoid; }
  .reasoning-check div { display: block !important; }
}