:root {
  --ink: #081525;
  --ink2: #0d2035;
  --navy: #0a2d50;
  --blue: #1769aa;
  --sky: #6aa9db;
  --ice: #dceaf5;
  --paper: #f6f9fc;
  --white: #fff;
  --muted: #66778a;
  --line: #d9e3ec;
  --warn: #a57922;
  --good: #16745a;
  --red: #a94a49;
  --max: 1240px;
  --shadow: 0 12px 36px rgba(8, 21, 37, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI", Inter, Arial, sans-serif;
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }

/* Header */
.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  height: 72px;
  background: rgba(246, 249, 252, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(8, 21, 37, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
}
.brand { display: flex; gap: 12px; align-items: center; }
.brand-mark {
  width: 38px;
  height: 38px;
  background: var(--ink);
  color: #fff;
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: -1px;
}
.brand strong { display: block; font-size: 15px; }
.brand small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.06em;
  margin-top: 1px;
}
.topbar nav { display: flex; gap: 22px; font-size: 13px; color: #31485d; }
.topbar nav a:hover { color: var(--blue); }

main { overflow: hidden; }

/* Standard button system: one source of truth */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  width: auto;
  min-width: 0;
  min-height: 44px;
  padding: 11px 16px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  line-height: 1.2;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
}
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.small { min-height: 38px; padding: 9px 12px; font-size: 12px; }

/* Hero */
.hero { max-width: var(--max); margin: auto; padding: 30px 24px 56px; }
.hero-banner-wrap {
  background: #fff;
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(4, 25, 45, 0.16);
  border: 1px solid rgba(6, 38, 66, 0.08);
}
.hero-banner { display: block; width: 100%; height: auto; }
.hero-copy-below { max-width: 860px; padding: 26px 8px 0; }
.eyebrow {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.11em;
  color: var(--blue);
  font-weight: 700;
  text-transform: uppercase;
}
.eyebrow span:last-child { color: #6a8296; font-weight: 600; }
.hero h1 { font-size: 52px; line-height: 0.95; letter-spacing: -0.045em; margin: 18px 0 14px; }
.lede { font-size: 18px; line-height: 1.55; color: var(--muted); max-width: 780px; }
.hero-actions {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 22px;
}
.hero-actions > .btn {
  flex: 0 0 auto;
  width: auto;
  min-width: 0;
  max-width: none;
}
.guardrail { margin-top: 14px; font-size: 13px; color: #6b7f90; max-width: 760px; }
.observatory-status {
  display: flex;
  gap: 10px 22px;
  flex-wrap: wrap;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  color: var(--muted);
}
.observatory-status span:first-child { color: var(--ink); font-weight: 700; }

/* Section scaffolding */
.section { max-width: var(--max); margin: auto; padding: 88px 24px; }
.section-head { max-width: 780px; margin-bottom: 40px; }
.section-head.split {
  max-width: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: end;
}
.section-head h2 { font-size: 40px; line-height: 1.05; letter-spacing: -0.035em; margin: 8px 0 10px; }
.section-head p { color: var(--muted); margin: 0; }
.kicker, .micro {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--blue);
  font-weight: 800;
}
.micro { font-size: 10px; letter-spacing: 0.11em; }

/* Baseline reading */
.reading-grid, .method-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.reading-grid article, .method-grid article {
  border-top: 3px solid var(--ink);
  background: #fff;
  padding: 24px;
  min-height: 220px;
  box-shadow: var(--shadow);
}
.reading-grid article span, .method-grid article span { font-size: 12px; color: var(--blue); font-weight: 800; }
.reading-grid h3, .method-grid h3 { font-size: 20px; margin: 26px 0 10px; letter-spacing: -0.02em; }
.reading-grid p, .method-grid p { font-size: 14px; color: var(--muted); }

/* Live first-rung monitor */
.pulse { padding-top: 70px; }
.signature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.signature-card {
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy);
  padding: 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-height: 390px;
}
.fed-feature { border-top: 4px solid var(--navy); }
.stanford-feature { border-top-color: var(--blue); }
.signature-topline { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; }
.signature-topline h3 { margin: 6px 0 0; font-size: 22px; letter-spacing: -0.02em; }
.evidence-role {
  padding: 5px 8px;
  border: 1px solid var(--line);
  color: #586c7c;
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  white-space: nowrap;
}
.evidence-role.ai { color: var(--blue); border-color: rgba(23, 105, 170, 0.28); }
.fed-feature-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 34px 0 18px; }
.fed-feature-metric { background: #f1f6fa; padding: 20px; border-left: 3px solid #9dbbd1; }
.fed-feature-metric b { display: block; font-size: 46px; line-height: 1; letter-spacing: -0.055em; color: var(--navy); }
.fed-feature-metric > span { display: block; margin-top: 7px; font-size: 12px; font-weight: 700; color: #3e5669; }
.fed-feature-metric small {
  display: block;
  margin-top: 16px;
  padding-top: 11px;
  border-top: 1px solid #d7e2ea;
  font-size: 10px;
  line-height: 1.35;
  color: var(--muted);
}
.stanford-feature-metric { display: flex; align-items: baseline; gap: 14px; margin: 26px 0 12px; }
.stanford-feature-metric span, .stanford-feature-metric b { font-size: 48px; line-height: 1; letter-spacing: -0.055em; }
.stanford-feature-metric span { color: #7895aa; }
.stanford-feature-metric b { color: var(--blue); }
.stanford-feature-metric i { font-style: normal; font-size: 25px; color: #7f93a3; }
.dumbbell { position: relative; height: 92px; margin: 10px 2px 8px; }
.dumbbell-line {
  position: absolute;
  left: 11%;
  right: 11%;
  top: 29px;
  height: 3px;
  background: linear-gradient(90deg, #a9bdcc, #1769aa);
}
.dumbbell-point { position: absolute; top: 17px; width: 110px; text-align: center; }
.dumbbell-point::before {
  content: "";
  display: block;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  border: 5px solid #93adbf;
  margin: 0 auto 6px;
  position: relative;
  z-index: 2;
}
.dumbbell-point.start { left: 0; }
.dumbbell-point.end { right: 0; }
.dumbbell-point.end::before { border-color: var(--blue); background: var(--blue); }
.dumbbell-point span { display: none; }
.dumbbell-point small { display: block; font-size: 9px; line-height: 1.25; color: var(--muted); }
.signature-note { font-size: 13px; line-height: 1.5; color: var(--muted); margin: 12px 0 18px; }
.signature-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  color: var(--muted);
}
.signature-footer a { color: var(--blue); font-weight: 700; white-space: nowrap; }

.context-strip {
  margin-top: 18px;
  background: #fff;
  border: 1px solid var(--line);
  padding: 20px 22px;
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(360px, 1.2fr);
  gap: 28px;
  align-items: center;
}
.context-copy h3 { font-size: 19px; margin: 6px 0 8px; }
.context-copy p { font-size: 12px; line-height: 1.5; color: var(--muted); margin: 0 0 10px; }
.context-copy p strong { font-size: 22px; color: var(--navy); letter-spacing: -0.03em; margin-right: 4px; }
.context-copy p span { display: inline-block; margin-left: 5px; font-weight: 700; color: var(--red); }
.context-copy a { font-size: 10px; color: var(--blue); font-weight: 700; }
.context-chart-wrap { position: relative; min-width: 0; }
.context-chart { display: block; width: 100%; height: auto; }
.context-baseline { stroke: #dce6ed; stroke-width: 1; }
.context-line { fill: none; stroke: #6f95b1; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.context-area { fill: url(#contextFade); }
.context-point { fill: #fff; stroke: #6f95b1; stroke-width: 2; cursor: pointer; }
.context-point.latest { fill: #1769aa; stroke: #fff; stroke-width: 2; }
.context-axis-label { fill: #8697a5; font-size: 9px; font-family: "Segoe UI", Arial, sans-serif; }
.chart-tooltip {
  position: absolute;
  z-index: 4;
  padding: 8px 10px;
  background: #071a2d;
  color: #fff;
  font-size: 11px;
  line-height: 1.35;
  box-shadow: 0 8px 20px rgba(7, 26, 45, 0.2);
  pointer-events: none;
  transform: translate(-50%, -115%);
  white-space: nowrap;
}
.reading-strip {
  margin-top: 14px;
  background: #071a2d;
  color: #fff;
  padding: 18px 22px;
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 20px;
  align-items: start;
}
.reading-strip .micro { color: #82b6db; }
.reading-strip p { margin: 0; color: #bfcfdb; font-size: 13px; line-height: 1.55; }
.reading-strip strong { color: #fff; }

/* Attribution */
.attribution {
  background: #edf4f8;
  max-width: none;
  padding-left: max(24px, calc((100vw - var(--max)) / 2));
  padding-right: max(24px, calc((100vw - var(--max)) / 2));
}
.attribution-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.attribution-card {
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--navy);
  padding: 24px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-height: 390px;
}
.attribution-card:nth-child(3) { border-top-color: var(--warn); }
.attribution-card .micro { color: var(--blue); }
.attribution-metric { font-size: 34px; line-height: 1; font-weight: 800; letter-spacing: -0.045em; color: var(--navy); margin: 20px 0 14px; }
.attribution-card h3 { font-size: 19px; line-height: 1.22; margin: 0 0 12px; letter-spacing: -0.02em; }
.attribution-card p { font-size: 13px; color: var(--muted); margin: 0 0 16px; }
.attribution-caveat { margin-top: auto; padding: 13px 14px; background: #f4f7f9; font-size: 11px; line-height: 1.45; color: #5c7082; }
.attribution-caveat b { display: block; font-size: 9px; letter-spacing: 0.1em; color: var(--warn); margin-bottom: 5px; }
.attribution-card a { display: inline-block; margin-top: 14px; color: var(--blue); font-size: 11px; font-weight: 700; }
.attribution-synthesis {
  margin-top: 18px;
  background: #071a2d;
  color: #fff;
  padding: 22px 24px;
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 22px;
  align-items: start;
}
.attribution-synthesis span { font-size: 10px; letter-spacing: 0.12em; color: #82b6db; font-weight: 800; }
.attribution-synthesis p { margin: 0; color: #c1d0dc; font-size: 14px; line-height: 1.55; }
.attribution-synthesis strong { color: #fff; }

/* Action threshold */
.threshold {
  max-width: none;
  background: #071a2d;
  color: #fff;
  padding-left: max(24px, calc((100vw - var(--max)) / 2));
  padding-right: max(24px, calc((100vw - var(--max)) / 2));
}
.threshold .section-head p { color: #aabed0; }
.threshold-track { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; position: relative; }
.threshold-line { position: absolute; left: 4%; right: 4%; top: 19px; height: 1px; background: rgba(255, 255, 255, 0.18); }
.threshold-card { position: relative; border: 1px solid rgba(255, 255, 255, 0.12); padding: 34px 20px 22px; background: rgba(255, 255, 255, 0.035); min-height: 260px; }
.status-dot { position: absolute; width: 12px; height: 12px; border-radius: 50%; top: 13px; left: 20px; background: var(--sky); box-shadow: 0 0 0 5px #071a2d; }
.threshold-card.partial .status-dot { background: #d7ab5b; }
.threshold-card b { display: block; color: #a6c8e2; font-size: 11px; letter-spacing: 0.08em; }
.threshold-card h3 { font-size: 22px; line-height: 1.1; margin: 28px 0 10px; }
.threshold-card p { color: #b8c7d3; font-size: 14px; }
.threshold-card small { position: absolute; bottom: 20px; left: 20px; font-size: 10px; letter-spacing: 0.1em; color: #6ea8d1; }
.threshold-card.partial small { color: #d7ab5b; }
.threshold-caption { margin: 28px 0 0; color: #9eb5c7; font-size: 14px; }
.threshold-caption strong { color: #fff; }

/* Capability ladder */
.ladder-wrap {
  display: grid;
  grid-template-columns: 1.15fr auto 0.95fr auto 1fr auto 1fr auto 1.1fr;
  align-items: center;
  gap: 10px;
  margin: 50px 0 30px;
}
.ladder-stage { min-height: 128px; padding: 20px; border: 1px solid var(--line); background: #fff; display: flex; flex-direction: column; justify-content: center; position: relative; }
.ladder-stage b { font-size: 19px; }
.ladder-stage span { font-size: 12px; color: var(--muted); }
.ladder-stage.pressure { border: 2px solid var(--red); box-shadow: 0 10px 30px rgba(169, 74, 73, 0.1); transform: translateY(14px); }
.ladder-stage.pressure em { position: absolute; right: 12px; top: 10px; font-size: 28px; color: var(--red); font-style: normal; }
.ladder-stage.strong { background: var(--ink); color: #fff; }
.ladder-stage.strong span { color: #b9cad7; }
.ladder-arrow { color: #8ea5b6; font-size: 22px; }
.ladder-callout { background: #eaf2f8; border-left: 4px solid var(--blue); padding: 20px 24px; display: grid; grid-template-columns: 190px 1fr; gap: 20px; }
.ladder-callout span { font-size: 11px; letter-spacing: 0.11em; font-weight: 800; color: var(--blue); }
.ladder-callout p { margin: 0; }

/* Evidence ledger */
.evidence-tools { display: flex; gap: 10px; flex-wrap: wrap; margin: 10px 0 16px; align-items: flex-end; }
.evidence-tools label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); display: flex; flex-direction: column; gap: 5px; }
.evidence-tools select { min-width: 170px; border: 1px solid var(--line); background: #fff; padding: 9px 10px; color: var(--ink); font: inherit; font-size: 12px; }
.evidence-meta { display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; border-bottom: 1px solid var(--line); padding-bottom: 10px; }
.ledger { display: grid; gap: 0; }
.ledger-row { display: grid; grid-template-columns: 150px 135px 1fr 100px 84px; gap: 18px; align-items: center; border-bottom: 1px solid var(--line); padding: 18px 8px; cursor: pointer; transition: 0.15s; }
.ledger-row:hover { background: #fff; transform: translateX(3px); }
.ledger-row .stream { font-size: 11px; color: var(--blue); font-weight: 700; }
.ledger-row .geo { font-size: 11px; color: var(--muted); }
.ledger-row h3 { font-size: 15px; line-height: 1.3; margin: 0; font-weight: 650; }
.ledger-row .metric { font-weight: 800; font-size: 16px; text-align: right; }
.pill { font-size: 9px; letter-spacing: 0.07em; text-transform: uppercase; padding: 5px 7px; border: 1px solid var(--line); text-align: center; }
.pill.strain { color: var(--red); border-color: rgba(169, 74, 73, 0.35); }
.pill.ai-signal { color: var(--blue); border-color: rgba(23, 105, 170, 0.35); }
.pill.mixed { color: var(--warn); border-color: rgba(165, 121, 34, 0.35); }
.pill.recovery { color: var(--good); border-color: rgba(22, 116, 90, 0.35); }
.pill.context, .pill.mechanism { color: #586c7c; }

/* Relative recovery */
.recovery {
  background: #eef4f8;
  max-width: none;
  padding-left: max(24px, calc((100vw - var(--max)) / 2));
  padding-right: max(24px, calc((100vw - var(--max)) / 2));
}
.recovery-reading { display: flex; justify-content: space-between; gap: 30px; align-items: end; background: #fff; border: 1px solid var(--line); padding: 22px 24px; margin-bottom: 16px; }
.recovery-reading h3 { margin: 7px 0 0; font-size: 20px; max-width: 800px; line-height: 1.3; }
.recovery-updated { font-size: 10px; letter-spacing: 0.08em; color: var(--muted); white-space: nowrap; }
.recovery-lanes { display: grid; grid-template-columns: 1fr 92px 1fr; gap: 0; align-items: stretch; }
.recovery-lane { background: #fff; border: 1px solid var(--line); padding: 22px; }
.first-rung-lane { border-top: 3px solid var(--red); }
.lane-head { display: flex; gap: 12px; align-items: center; padding-bottom: 16px; border-bottom: 1px solid var(--line); }
.lane-head > span { width: 34px; height: 34px; display: grid; place-items: center; background: #eaf2f8; color: var(--blue); font-size: 11px; font-weight: 800; }
.lane-head b { display: block; font-size: 17px; }
.lane-head small { color: var(--muted); }
.lane-items { display: grid; gap: 0; }
.lane-item { display: grid; grid-template-columns: 1fr auto; gap: 16px; padding: 16px 0; border-bottom: 1px solid #e6edf2; }
.lane-item:last-child { border-bottom: 0; }
.lane-item h3 { margin: 0 0 5px; font-size: 14px; }
.lane-item p { margin: 0; font-size: 11px; color: var(--muted); line-height: 1.45; }
.lane-value { text-align: right; white-space: nowrap; }
.lane-value b { display: block; font-size: 20px; letter-spacing: -0.03em; }
.lane-value span { display: inline-block; margin-top: 4px; font-size: 9px; padding: 4px 6px; text-transform: uppercase; letter-spacing: 0.06em; border: 1px solid var(--line); }
.lane-item.recovery .lane-value span { color: var(--good); border-color: rgba(22, 116, 90, 0.3); }
.lane-item.strain .lane-value span { color: var(--red); border-color: rgba(169, 74, 73, 0.3); }
.lane-item.mixed .lane-value span { color: var(--warn); border-color: rgba(165, 121, 34, 0.3); }
.lane-item a { color: var(--blue); font-size: 10px; font-weight: 700; }
.recovery-divider { display: grid; place-items: center; }
.recovery-divider span { white-space: pre-line; writing-mode: vertical-rl; transform: rotate(180deg); font-size: 9px; letter-spacing: 0.13em; font-weight: 800; color: #8295a4; }
.falsification-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 18px; }
.falsification-strip article { background: #fff; padding: 19px; border-top: 2px solid var(--blue); }
.falsification-strip span { font-size: 9px; font-weight: 800; color: var(--blue); }
.falsification-strip h3 { font-size: 16px; line-height: 1.25; margin: 12px 0 8px; }
.falsification-strip p { font-size: 12px; color: var(--muted); margin: 0; }
.falsification-strip b { display: block; margin-top: 14px; font-size: 10px; color: var(--ink); }

/* Sources and method */
.source-summary { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; }
.source-stat { background: #fff; border: 1px solid var(--line); padding: 13px 16px; min-width: 140px; }
.source-stat b { display: block; font-size: 23px; }
.source-stat span { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }
.source-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.source-item { background: #fff; border: 1px solid var(--line); padding: 18px; display: grid; grid-template-columns: 1fr auto; gap: 18px; }
.source-item h3 { font-size: 14px; margin: 0 0 5px; }
.source-item p { font-size: 11px; color: var(--muted); margin: 0; }
.source-item a { font-size: 11px; color: var(--blue); align-self: center; }
.method-grid { grid-template-columns: repeat(3, 1fr); }
.method-note { background: #fff; border: 1px solid var(--line); padding: 20px; margin-top: 18px; color: var(--muted); font-size: 13px; }
.method-note strong { color: var(--ink); }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 32px max(24px, calc((100vw - var(--max)) / 2)); display: flex; justify-content: space-between; color: var(--muted); font-size: 12px; }
footer strong { display: block; color: var(--ink); font-size: 14px; }
footer span { display: block; margin-top: 3px; }

/* Evidence detail dialog */
dialog { width: min(760px, calc(100vw - 30px)); border: none; padding: 0; box-shadow: 0 30px 90px rgba(7, 24, 44, 0.3); color: var(--ink); }
dialog::backdrop { background: rgba(4, 17, 30, 0.65); backdrop-filter: blur(4px); }
.dialog-close { position: absolute; right: 12px; top: 8px; background: none; border: none; font-size: 28px; cursor: pointer; color: #6b7f90; }
.detail { padding: 38px; }
.detail .topline { display: flex; gap: 8px; align-items: center; margin-bottom: 18px; }
.detail h2 { font-size: 30px; line-height: 1.1; margin: 0 0 10px; }
.detail .metric-big { font-size: 42px; font-weight: 800; color: var(--navy); margin: 18px 0; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 26px 0; }
.detail-box { background: #f2f6f9; padding: 16px; }
.detail-box b { display: block; font-size: 10px; letter-spacing: 0.08em; color: var(--blue); margin-bottom: 6px; }
.detail-box p { margin: 0; font-size: 13px; }
.detail .source-link { display: inline-block; color: var(--blue); font-weight: 700; font-size: 13px; margin-top: 12px; }

/* Responsive layout */
@media (max-width: 980px) {
  .topbar nav { display: none; }
  .hero { padding-top: 72px; }
  .section-head.split { grid-template-columns: 1fr; gap: 12px; }
  .reading-grid { grid-template-columns: repeat(2, 1fr); }
  .signature-grid { grid-template-columns: 1fr; }
  .context-strip { grid-template-columns: 1fr; }
  .context-chart-wrap { max-width: 700px; }
  .reading-strip { grid-template-columns: 1fr; }
  .attribution-grid { grid-template-columns: 1fr; }
  .attribution-card { min-height: 0; }
  .attribution-synthesis { grid-template-columns: 1fr; }
  .threshold-track { grid-template-columns: repeat(2, 1fr); }
  .threshold-line { display: none; }
  .ladder-wrap { grid-template-columns: 1fr; gap: 6px; }
  .ladder-arrow { transform: rotate(90deg); justify-self: center; }
  .ladder-stage.pressure { transform: none; }
  .recovery-lanes { grid-template-columns: 1fr; }
  .recovery-divider { height: 54px; }
  .recovery-divider span { writing-mode: horizontal-tb; transform: none; white-space: normal; }
  .falsification-strip { grid-template-columns: repeat(3, 1fr); }
  .method-grid { grid-template-columns: 1fr 1fr; }
  .source-list { grid-template-columns: 1fr; }
  .ledger-row { grid-template-columns: 110px 1fr 80px; }
  .ledger-row .geo, .ledger-row .pill { display: none; }
}

@media (max-width: 720px) {
  .recovery-reading { align-items: flex-start; flex-direction: column; }
  .falsification-strip { grid-template-columns: 1fr; }
  .evidence-meta { gap: 10px; flex-direction: column; }
  .ledger-row {
    display: grid !important;
    grid-template-columns: 1fr auto !important;
    gap: 5px 12px !important;
    padding: 17px 12px !important;
    background: #fff;
    margin-bottom: 8px;
    border: 1px solid var(--line) !important;
  }
  .ledger-row .stream { display: block !important; grid-column: 1; font-size: 10px; }
  .ledger-row .geo { display: block !important; grid-column: 1; color: var(--muted); font-size: 10px; }
  .ledger-row h3 { grid-column: 1; grid-row: auto; font-size: 14px; }
  .ledger-row .metric { grid-column: 2; grid-row: 1 / 4 !important; align-self: center; font-size: 18px; }
  .ledger-row .pill { display: block !important; grid-column: 1; width: max-content; margin-top: 4px; }
  .recovery-lane { padding: 17px; }
  .lane-item { grid-template-columns: 1fr; }
  .lane-value { text-align: left; }
}

@media (max-width: 640px) {
  .hero { padding-left: 20px; padding-right: 20px; }
  .hero h1 { font-size: 42px; }
  .lede { font-size: 17px; }
  .hero-copy-below { padding-top: 20px; }
  .hero-actions { align-items: flex-start; }
  .btn { width: fit-content; max-width: 100%; }
  .section { padding: 62px 18px; }
  .section-head h2 { font-size: 34px; }
  .reading-grid, .threshold-track, .method-grid { grid-template-columns: 1fr; }
  .signature-card { padding: 20px; min-height: 0; }
  .signature-topline { flex-direction: column; }
  .fed-feature-metrics { grid-template-columns: 1fr; margin-top: 24px; }
  .fed-feature-metric b, .stanford-feature-metric span, .stanford-feature-metric b { font-size: 40px; }
  .signature-footer { align-items: flex-start; flex-direction: column; gap: 8px; }
  .context-strip { padding: 18px; }
  .context-chart-wrap { margin: 0 -4px; }
  .reading-strip { padding: 17px; }
  .observatory-status { flex-direction: column; gap: 5px; }
  .attribution { padding-left: 18px; padding-right: 18px; }
  .attribution-card { padding: 20px; }
  .attribution-metric { font-size: 30px; }
  .ladder-callout { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  footer { flex-direction: column; gap: 14px; }
}

/* OCT2026_BEGIN · New evidence synthesis, designed to match the v20 site */
.research-update { padding-top: 72px; padding-bottom: 80px; }
.research-update-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.research-update-card { min-width: 0; background: white; border: 1px solid var(--line); border-top: 4px solid var(--ink); padding: 25px 23px 22px; display: flex; flex-direction: column; }
.research-update-card .micro { display: block; color: var(--blue); margin-bottom: 12px; }
.research-metric { display: block; font-size: clamp(28px,3vw,42px); font-weight: 780; letter-spacing: -.045em; line-height: 1.06; color: var(--ink); white-space: nowrap; }
.research-metric em { font-size: .55em; color: var(--muted); font-style: normal; }
.research-update-card h3 { font-size: 19px; line-height: 1.2; margin: 18px 0 10px; }
.research-update-card p { color: #48596c; font-size: 14px; line-height: 1.56; margin: 0 0 14px; }
.research-update-card small { color: #66778a; font-size: 12px; line-height: 1.5; margin-top: auto; padding-top: 10px; }
.research-update-card a { font-size: 12px; font-weight: 700; color: var(--blue); margin-top: 14px; }
.research-update-card a:hover, .research-update-caution a:hover { text-decoration: underline; }
.research-update-caution { display: grid; grid-template-columns: minmax(180px, .75fr) 2fr; align-items: start; column-gap: 30px; background: var(--ice); padding: 24px 28px; margin-top: 18px; border-left: 4px solid var(--blue); }
.research-update-caution h3 { margin: 6px 0 0; font-size: 20px; line-height: 1.24; }
.research-update-caution p { color: #344b60; font-size: 14px; line-height: 1.6; margin: 0; }
.research-update-caution a { grid-column: 2; font-size: 12px; font-weight: 700; color: var(--blue); margin-top: 10px; }
.research-update-freshness { font-size: 12px; line-height: 1.55; color: var(--muted); margin-top: 20px; }
@media (max-width: 900px) { .research-update-grid { grid-template-columns: repeat(2, minmax(0,1fr)); } .research-update-caution { grid-template-columns: 1fr; gap: 12px; } .research-update-caution a { grid-column: 1; } }
@media (max-width: 560px) { .research-update-grid { grid-template-columns: 1fr; } .research-update-card { padding: 22px 20px; } .research-update-caution { padding: 20px; } }
/* OCT2026_END */

/* November 2026 editorial update: visually prioritize the latest synthesis, retain October history. */
.november-update { padding-top: 72px; background: #f4f8fc; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.november-update .research-update-card { border-top-color: #2e597d; }
.november-update .research-update-card .research-metric { font-size: clamp(24px, 2.25vw, 35px); }
.source-item { display: block; }
.source-links { list-style: none; padding: 8px 0 0; margin: 0; display: grid; gap: 7px; }
.source-links li { border-top: 1px solid var(--line); padding-top: 7px; }
.source-links a { font-size: 11px; line-height: 1.45; color: var(--blue); display: inline-block; overflow-wrap: anywhere; }
.source-item h3 { overflow-wrap: anywhere; }

/* November supplementary evidence: clear analytical separation from observed labor series. */
.supplementary-update { padding-top: 70px; padding-bottom: 72px; background: #fff; border-bottom: 1px solid var(--line); }
.supplementary-update .research-update-card { border-top-color: #476b76; }
.supplementary-update .research-update-card a + a { margin-top: 8px; }
.supplementary-update .research-update-card .research-metric { font-size: clamp(24px, 2.3vw, 36px); }
.supplementary-update .research-update-caution { background: #f2f6f7; }