:root {
  color-scheme: light dark;
  --paper: #f2f0e8;
  --paper-raised: #faf8f1;
  --ink: #172524;
  --muted: #65716e;
  --surface: #fffdf7;
  --surface-2: #e8ece7;
  --line: #c8cfca;
  --grid: #d9ded9;
  --teal: #087978;
  --teal-deep: #075a5b;
  --teal-soft: #c6e3df;
  --cyan: #2ba8a1;
  --blue: #345e91;
  --blue-soft: #ccdaea;
  --orange: #c45b2a;
  --orange-soft: #f3c9ae;
  --gold: #9a6b00;
  --gold-soft: #f2dfaa;
  --violet: #6a4a87;
  --danger: #a33e37;
  --shadow: 0 20px 60px rgb(23 37 36 / 0.09);
  --shadow-small: 0 8px 24px rgb(23 37 36 / 0.07);
  --radius: 18px;
  --radius-small: 11px;
  --max-width: 1500px;
  --wt-grid: #d9ded9;
  --wt-stage-top: #173a42;
  --wt-stage-bottom: #081719;
  --wt-chart-bg: #f8faf5;
  --wt-muted: #65716e;
  --wt-tube: rgb(8 121 120 / 0.18);
  --wt-forecast: #087978;
  --wt-actual: #c45b2a;
  --wt-line: #86918d;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: Georgia, "Times New Roman", serif;
  font-family: var(--sans);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0e1514;
    --paper-raised: #141d1b;
    --ink: #edf5f1;
    --muted: #a9b8b3;
    --surface: #17221f;
    --surface-2: #202e2a;
    --line: #3a4a45;
    --grid: #293733;
    --teal: #70d4ca;
    --teal-deep: #9be4dc;
    --teal-soft: #244c48;
    --cyan: #74dcd4;
    --blue: #93bce9;
    --blue-soft: #293f57;
    --orange: #ff9b64;
    --orange-soft: #5c3727;
    --gold: #f0c55f;
    --gold-soft: #504523;
    --violet: #c9a7e9;
    --danger: #ff968d;
    --shadow: 0 22px 70px rgb(0 0 0 / 0.28);
    --shadow-small: 0 9px 26px rgb(0 0 0 / 0.22);
    --wt-grid: #32413d;
    --wt-stage-top: #183840;
    --wt-stage-bottom: #061113;
    --wt-chart-bg: #14201d;
    --wt-muted: #a9b8b3;
    --wt-tube: rgb(112 212 202 / 0.18);
    --wt-forecast: #70d4ca;
    --wt-actual: #ff9b64;
    --wt-line: #61706b;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% -8%, color-mix(in srgb, var(--teal) 15%, transparent), transparent 38rem),
    radial-gradient(circle at 91% 34%, color-mix(in srgb, var(--orange) 7%, transparent), transparent 34rem),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
}

button, input, select { font: inherit; }

a {
  color: var(--teal-deep);
  text-underline-offset: 0.2em;
}

a:hover { text-decoration-thickness: 2px; }

button, select, input[type="range"] { cursor: pointer; }

button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--orange) 70%, transparent);
  outline-offset: 3px;
}

button:disabled, input:disabled { cursor: not-allowed; opacity: 0.55; }

.skip-link {
  position: fixed;
  z-index: 100;
  left: 1rem;
  top: -5rem;
  padding: 0.7rem 0.9rem;
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
}

.skip-link:focus { top: 1rem; }

.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;
}

.site-header,
main,
.site-footer {
  width: min(var(--max-width), calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  min-height: 4.5rem;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  color: var(--ink);
  text-decoration: none;
}

.wordmark > span {
  display: grid;
  place-items: center;
  width: 2.55rem;
  aspect-ratio: 1;
  border: 1px solid var(--teal);
  border-radius: 50%;
  color: var(--teal-deep);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.wordmark strong { font-size: 0.88rem; letter-spacing: 0.02em; }

.site-header nav { display: flex; flex-wrap: wrap; gap: 0.65rem 1.25rem; font-size: 0.88rem; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(260px, 0.5fr);
  gap: clamp(2rem, 8vw, 8rem);
  align-items: end;
  padding: clamp(4rem, 8vw, 7.7rem) 0 clamp(3rem, 6vw, 5rem);
}

.eyebrow,
.section-kicker,
.panel-kicker {
  margin: 0 0 0.55rem;
  color: var(--teal-deep);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1, h2, h3 { margin-top: 0; line-height: 1.08; text-wrap: balance; }

h1 {
  max-width: 990px;
  margin-bottom: 1.25rem;
  font-family: var(--serif);
  font-size: clamp(3rem, 6.5vw, 6.6rem);
  font-weight: 600;
  letter-spacing: -0.055em;
}

h2 {
  margin-bottom: 0.7rem;
  font-family: var(--serif);
  font-size: clamp(1.75rem, 3vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.035em;
}

h3 { margin-bottom: 0.4rem; font-size: clamp(1.05rem, 1.5vw, 1.3rem); }

.dek {
  max-width: 820px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.06rem, 1.7vw, 1.32rem);
}

.experiment-contract {
  position: relative;
  padding: 1.35rem 1.4rem 1.35rem 4.5rem;
  border-left: 3px solid var(--orange);
  background: color-mix(in srgb, var(--surface) 72%, transparent);
}

.experiment-contract p { margin: 0; color: var(--muted); font-size: 0.92rem; }
.experiment-contract strong { color: var(--ink); }

.contract-icon {
  position: absolute;
  left: 1.15rem;
  top: 1.2rem;
  color: var(--orange);
  font-family: var(--serif);
  font-size: 1.65rem;
}

.evidence-strip,
.control-deck,
.ensemble-deck,
.comparison,
.ensemble-results,
.results,
.atlas-section,
.design-section,
.laboratory-section,
.certification-section,
.ledger-section,
.interpretation {
  margin-bottom: clamp(3.5rem, 7vw, 6.5rem);
}

.evidence-strip {
  display: grid;
  grid-template-columns: minmax(210px, 0.45fr) minmax(0, 1.55fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: 1.4rem 0;
  border-block: 1px solid var(--line);
}

.strip-heading h2 { margin: 0; font-size: clamp(1.4rem, 2vw, 2rem); }

.tier-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tier {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: center;
  padding: 0.8rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}

.tier-index {
  display: grid;
  place-items: center;
  width: 1.8rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 800;
}

.tier strong, .tier small { display: block; }
.tier small { color: var(--muted); font-size: 0.73rem; }
.tier output { grid-column: 2; color: var(--muted); font-size: 0.75rem; }
.tier.is-active { border-color: color-mix(in srgb, var(--teal) 60%, var(--line)); }
.tier.is-active .tier-index { background: var(--teal); color: var(--paper); }
.tier.is-certified { border-color: color-mix(in srgb, var(--gold) 50%, var(--line)); }
.tier.is-certified .tier-index { background: var(--gold-soft); color: var(--gold); }
.tier[data-state="passed"] { background: color-mix(in srgb, var(--teal-soft) 45%, var(--surface)); }
.tier[data-state="failed"] { border-color: var(--danger); }
.tier[data-status="passed"], .tier[data-status="frozen"], .tier[data-status="numerical"] { background: color-mix(in srgb, var(--teal-soft) 45%, var(--surface)); border-color: var(--teal); }
.tier[data-status="proved"] { background: color-mix(in srgb, var(--gold-soft) 38%, var(--surface)); border-color: var(--gold); }
.tier[data-status="proved"] .tier-index { background: var(--gold-soft); color: var(--gold); }
.tier[data-status="unresolved"] { border-color: var(--orange); }

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 2rem;
  margin-bottom: 1.25rem;
}

.section-heading h2 { margin-bottom: 0; }
.section-heading > p, .compact-heading > p { max-width: 550px; margin: 0; color: var(--muted); font-size: 0.88rem; text-align: right; }

.control-deck {
  padding: clamp(1.2rem, 2.5vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-small);
}

.controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(220px, 0.45fr);
  gap: 1.5rem;
  align-items: stretch;
}

.controls fieldset {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem 1.15rem;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.controls legend {
  grid-column: 1 / -1;
  margin-bottom: 0.15rem;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.controls label { display: grid; align-content: start; gap: 0.42rem; min-width: 0; }
.controls label > span { display: flex; justify-content: space-between; gap: 0.5rem; color: var(--muted); font-size: 0.8rem; }
.controls output { color: var(--ink); font-variant-numeric: tabular-nums; }

select {
  width: 100%;
  min-height: 2.55rem;
  padding: 0.4rem 2rem 0.4rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-raised);
  color: var(--ink);
}

input[type="number"],
input[type="text"] {
  width: 100%;
  min-height: 2.55rem;
  padding: 0.42rem 0.65rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-raised);
  color: var(--ink);
}

input[type="range"] { width: 100%; min-height: 1.8rem; accent-color: var(--teal); }

.run-controls {
  display: grid;
  grid-template-columns: 1fr;
  align-content: center;
  gap: 0.65rem;
  padding-left: 1.4rem;
  border-left: 1px solid var(--line);
}

.primary-button,
.secondary-button,
.icon-button {
  min-height: 2.65rem;
  border-radius: 9px;
  font-weight: 750;
}

.primary-button {
  padding: 0.65rem 1rem;
  border: 1px solid var(--teal-deep);
  background: var(--teal-deep);
  color: var(--paper);
  box-shadow: 0 7px 16px color-mix(in srgb, var(--teal) 25%, transparent);
}

.primary-button:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 10px 20px color-mix(in srgb, var(--teal) 30%, transparent); }

.secondary-button, .icon-button {
  padding: 0.58rem 0.9rem;
  border: 1px solid var(--line);
  background: var(--paper-raised);
  color: var(--ink);
}

.secondary-button:hover:not(:disabled), .icon-button:hover:not(:disabled) { border-color: var(--teal); color: var(--teal-deep); }

.run-status { margin: 0.3rem 0 0; color: var(--muted); font-size: 0.77rem; }

.forecast-seal {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-width: 225px;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface) 75%, transparent);
}

.forecast-seal small, .forecast-seal strong { display: block; }
.forecast-seal small { color: var(--muted); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.09em; }
.forecast-seal strong { font-size: 0.77rem; }

.seal-dot { width: 0.7rem; aspect-ratio: 1; border-radius: 50%; background: var(--orange); box-shadow: 0 0 0 4px color-mix(in srgb, var(--orange) 16%, transparent); }
.forecast-seal[data-state="sealed"] .seal-dot { background: var(--teal); box-shadow: 0 0 0 4px color-mix(in srgb, var(--teal) 18%, transparent); }

.comparison-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }

.instrument-panel,
.gain-card,
.quality-card,
.atlas-figure,
.atlas-reading {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-small);
  overflow: hidden;
}

.panel-heading,
.gain-card > header,
.quality-card > header,
.atlas-figure > header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  min-height: 5rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--line);
}

.panel-heading p, .panel-heading h3,
.gain-card header p, .gain-card header h3,
.quality-card header p, .quality-card header h3,
.atlas-figure header p, .atlas-figure header h3 { margin-bottom: 0; }

.time-readout, .forecast-id { color: var(--muted); font-size: 0.75rem; text-align: right; }
.time-readout span, .time-readout output, .forecast-id span, .forecast-id code { display: block; }
.time-readout output, .forecast-id code { color: var(--ink); font-size: 0.9rem; font-variant-numeric: tabular-nums; }

.canvas-stage,
.atlas-stage,
.sensor-chart-wrap {
  position: relative;
  isolation: isolate;
  background:
    linear-gradient(color-mix(in srgb, var(--grid) 40%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--grid) 40%, transparent) 1px, transparent 1px),
    color-mix(in srgb, var(--paper) 60%, var(--surface));
  background-size: 32px 32px;
}

.canvas-stage, .sensor-chart-wrap {
  height: clamp(380px, 43vw, 620px);
  min-height: 0;
}

#dynamics-canvas,
#torus-atlas,
#sensor-chart {
  display: block;
  width: 100%;
  height: 100%;
  min-height: inherit;
}

#dynamics-canvas, #torus-atlas { touch-action: none; }

.stage-overlay { position: absolute; z-index: 2; pointer-events: none; }
.stage-overlay.top-left { top: 0.85rem; left: 0.85rem; }
.stage-overlay.bottom-left { bottom: 0.85rem; left: 0.85rem; }

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 1.75rem;
  padding: 0.22rem 0.62rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  color: var(--muted);
  font-size: 0.73rem;
  font-weight: 750;
  backdrop-filter: blur(8px);
}

.status-pill[data-state="running"] { border-color: var(--teal); color: var(--teal-deep); }

.canvas-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.85rem;
  padding: 0.42rem 0.6rem;
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  color: var(--muted);
  font-size: 0.69rem;
  backdrop-filter: blur(8px);
}

.canvas-legend span, .plot-legend span { display: inline-flex; align-items: center; gap: 0.35rem; }
.line-key { display: inline-block; width: 1.3rem; height: 0; border-top: 2px solid; }
.actual-key { border-color: var(--orange); }
.forecast-key { border-color: var(--teal); border-top-style: dashed; }

.canvas-hint { position: absolute; z-index: 2; right: 0.8rem; bottom: 0.65rem; margin: 0; color: var(--muted); font-size: 0.68rem; pointer-events: none; }

.playback-controls {
  display: grid;
  grid-template-columns: auto auto minmax(100px, 1fr) auto;
  gap: 0.55rem;
  align-items: center;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--line);
}

.icon-button { width: 2.65rem; padding-inline: 0; }
.playback-controls select { min-height: 2.65rem; }

.sensor-chart-wrap { overflow: hidden; }

#sensor-chart text { fill: var(--ink); font-family: var(--sans); font-size: 12px; }
#sensor-chart .axis, #sensor-chart .tick { stroke: var(--line); }
#sensor-chart .grid-line { stroke: var(--grid); }
#sensor-chart .muted-label { fill: var(--muted); }
#sensor-chart .uncertainty-area { fill: color-mix(in srgb, var(--teal) 18%, transparent); }
#sensor-chart .forecast-series { stroke: var(--teal); stroke-width: 2.5; stroke-dasharray: 6 4; vector-effect: non-scaling-stroke; }
#sensor-chart .actual-series { stroke: var(--orange); stroke-width: 2.5; vector-effect: non-scaling-stroke; }
#sensor-chart .ensemble-member-series { stroke: color-mix(in srgb, var(--orange) 48%, transparent); stroke-width: 1.1; fill: none; vector-effect: non-scaling-stroke; }
#sensor-chart .ensemble-observed-area { fill: color-mix(in srgb, var(--orange) 18%, transparent); }
#sensor-chart .ensemble-median-series { stroke: var(--violet); stroke-width: 2.2; fill: none; vector-effect: non-scaling-stroke; }

.chart-empty-state {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  place-content: center;
  justify-items: center;
  padding: 2rem;
  color: var(--muted);
  text-align: center;
}

.chart-empty-state > span { color: var(--teal); font-family: var(--serif); font-size: 4rem; line-height: 1; }
.chart-empty-state strong, .chart-empty-state small { display: block; }
.chart-empty-state small { max-width: 300px; margin-top: 0.35rem; }
.chart-empty-state[hidden] { display: none; }

.plot-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  min-height: 3.1rem;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.72rem;
}

.swatch { display: inline-block; width: 1.25rem; height: 0.7rem; }
.forecast-line { height: 0; border-top: 2px dashed var(--teal); }
.uncertainty-band { background: color-mix(in srgb, var(--teal) 23%, transparent); border: 1px solid color-mix(in srgb, var(--teal) 55%, transparent); }
.actual-line { height: 0; border-top: 2px solid var(--orange); }

.tooltip {
  position: absolute;
  z-index: 12;
  max-width: 260px;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-small);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
}

.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.75rem; }

.metric-card {
  padding: 1.05rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: color-mix(in srgb, var(--surface) 84%, transparent);
}

.metric-card span, .metric-card strong, .metric-card small { display: block; }
.metric-card span { color: var(--muted); font-size: 0.76rem; }
.metric-card strong { margin: 0.18rem 0; font-family: var(--serif); font-size: clamp(1.35rem, 2.4vw, 2.15rem); font-variant-numeric: tabular-nums; }
.metric-card small { color: var(--muted); font-size: 0.69rem; }
.primary-metric { border-top: 3px solid var(--teal); }

.diagnostic-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.65fr); gap: 0.8rem; margin-top: 0.8rem; }
.gain-card, .quality-card { box-shadow: none; }
.scope-chip { padding: 0.28rem 0.55rem; border-radius: 999px; background: var(--teal-soft); color: var(--teal-deep); font-size: 0.73rem; }

.gain-gauges { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; padding: 1.2rem; }
.gauge-label { display: flex; justify-content: space-between; gap: 1rem; font-size: 0.78rem; }
.gauge-label output { font-weight: 800; font-variant-numeric: tabular-nums; }
.gauge-track { height: 0.56rem; margin: 0.48rem 0 0.3rem; border-radius: 999px; background: var(--surface-2); overflow: hidden; }
.gauge-track i { display: block; width: 0%; height: 100%; border-radius: inherit; background: var(--blue); transition: width 500ms ease; }
.gauge-track.strong i { background: var(--orange); }
.gain-gauges small { color: var(--muted); font-size: 0.69rem; }

.direction-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); }
.direction-grid > div { min-width: 0; padding: 0.85rem 1.2rem; border-right: 1px solid var(--line); }
.direction-grid > div:last-child { border-right: 0; }
.direction-grid span, .direction-grid code { display: block; }
.direction-grid span { color: var(--muted); font-size: 0.68rem; }
.direction-grid code { overflow: hidden; text-overflow: ellipsis; color: var(--ink); font-size: 0.77rem; white-space: nowrap; }

.quality-list { display: grid; margin: 0; }
.quality-list div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.77rem 1.2rem; border-bottom: 1px solid var(--line); }
.quality-list div:last-child { border-bottom: 0; }
.quality-list dt { color: var(--muted); font-size: 0.74rem; }
.quality-list dd { margin: 0; font-size: 0.76rem; font-weight: 750; text-align: right; font-variant-numeric: tabular-nums; }

.atlas-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.4fr); gap: 0.85rem; }
.atlas-stage {
  height: clamp(420px, 47vw, 720px);
  min-height: 0;
}

#torus-atlas {
  position: absolute;
  inset: 0;
}
.atlas-figure select { min-width: 210px; }

.atlas-legend {
  display: grid;
  grid-template-columns: auto minmax(80px, 1fr) auto auto;
  gap: 0.65rem;
  align-items: center;
  padding: 0.75rem 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.7rem;
}

.atlas-legend > i { height: 0.65rem; border-radius: 999px; background: linear-gradient(90deg, var(--blue), var(--teal), var(--gold), var(--orange)); }
.unresolved-key { display: inline-flex; align-items: center; gap: 0.35rem; margin-left: 1rem; }
.unresolved-key b { display: inline-block; width: 0.8rem; aspect-ratio: 1; background: repeating-linear-gradient(45deg, var(--muted), var(--muted) 1px, transparent 1px, transparent 3px); border: 1px solid var(--muted); }

.atlas-reading { padding: 1.25rem; }
.atlas-reading dl { display: grid; margin: 1.4rem 0; }
.atlas-reading dl div { display: flex; justify-content: space-between; gap: 1rem; padding: 0.7rem 0; border-bottom: 1px solid var(--line); }
.atlas-reading dt { color: var(--muted); font-size: 0.77rem; }
.atlas-reading dd { margin: 0; font-weight: 750; font-variant-numeric: tabular-nums; text-align: right; }
.atlas-reading > p:last-child { margin: 0; padding: 0.85rem; border-left: 3px solid var(--orange); background: color-mix(in srgb, var(--orange-soft) 32%, transparent); color: var(--muted); font-size: 0.75rem; }
.atlas-reading .persistence-summary { margin: 0.75rem 0 0; padding: 0.85rem; border-left: 3px solid var(--teal); background: color-mix(in srgb, var(--teal-soft) 28%, transparent); color: var(--muted); font-size: 0.75rem; }

.recommendation-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: center;
  padding: clamp(1.1rem, 2.5vw, 1.7rem);
  border: 1px solid color-mix(in srgb, var(--teal) 55%, var(--line));
  border-radius: var(--radius);
  background: linear-gradient(105deg, color-mix(in srgb, var(--teal-soft) 55%, var(--surface)), var(--surface));
}

.recommendation-mark { color: var(--teal-deep); font-family: var(--serif); font-size: 3rem; }
.recommendation-card span, .recommendation-card strong { display: block; }
.recommendation-card span { color: var(--muted); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; }
.recommendation-card strong { margin: 0.1rem 0; font-family: var(--serif); font-size: clamp(1.3rem, 2.2vw, 2rem); }
.recommendation-card p { margin: 0; color: var(--muted); font-size: 0.85rem; }

.certificate-card {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(390px, 0.75fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(1.5rem, 4vw, 3.5rem);
  border: 1px solid color-mix(in srgb, var(--gold) 50%, var(--line));
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 93% 10%, color-mix(in srgb, var(--gold) 17%, transparent), transparent 19rem),
    var(--surface);
  box-shadow: var(--shadow-small);
}

.certificate-copy p:not(.section-kicker) { max-width: 700px; color: var(--muted); }
.certificate-stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.75rem; margin: 0; }
.certificate-stats div { padding: 0.9rem; border: 1px solid var(--line); border-radius: 9px; background: color-mix(in srgb, var(--paper) 68%, transparent); }
.certificate-stats dt { color: var(--muted); font-size: 0.68rem; }
.certificate-stats dd { margin: 0.2rem 0 0; font-family: var(--serif); font-size: 1.15rem; font-weight: 700; font-variant-numeric: tabular-nums; }

.certificate-provenance {
  grid-column: 1 / -1;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.74rem;
}

.certificate-provenance > strong { color: var(--ink); }
.certificate-provenance ul { display: flex; flex-wrap: wrap; gap: 0.4rem 1.25rem; margin: 0.55rem 0 0; padding-left: 1.1rem; }
.certificate-provenance li::marker { color: var(--orange); }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-small); background: var(--surface); }
table { width: 100%; min-width: 690px; border-collapse: collapse; font-size: 0.81rem; }
th, td { padding: 0.78rem 1rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--muted); font-size: 0.69rem; letter-spacing: 0.07em; text-transform: uppercase; }
tbody tr:last-child td { border-bottom: 0; }
tbody td:nth-child(1), tbody td:nth-child(3), tbody td:nth-child(4) { white-space: nowrap; }
.ledger-row[data-tone="pass"] td:last-child { color: var(--teal-deep); font-weight: 750; }
.ledger-row[data-tone="fail"] td:last-child { color: var(--danger); font-weight: 750; }
.ledger-row[data-tone="warn"] td:last-child { color: var(--orange); font-weight: 750; }
#ledger-empty-row td { padding-block: 2rem; color: var(--muted); text-align: center; }
.ledger-note { margin: 0.7rem 0 0; color: var(--muted); font-size: 0.76rem; }

.interpretation { padding-block: clamp(2rem, 5vw, 4rem); border-block: 1px solid var(--line); }
.interpretation-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.2rem, 4vw, 3.5rem); }
.interpretation-grid p { margin: 0; color: var(--muted); }

.noscript { margin: 2rem auto; padding: 1rem; border-left: 4px solid var(--orange); background: var(--orange-soft); }

.site-footer { padding: 1.3rem 0 4rem; border-top: 1px solid var(--line); color: var(--muted); font-size: 0.78rem; }
.site-footer p { max-width: 900px; margin: 0; }

[hidden] { display: none !important; }

.ensemble-deck {
  padding: clamp(1.15rem, 2.7vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(120deg, color-mix(in srgb, var(--blue-soft) 28%, transparent), transparent 42%),
    var(--surface);
  box-shadow: var(--shadow-small);
}

.ensemble-controls { display: grid; gap: 1rem; }

.ensemble-primary-controls {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.9rem 1.1rem;
}

.ensemble-primary-controls > label,
.laboratory-controls > label {
  display: grid;
  align-content: start;
  gap: 0.4rem;
  min-width: 0;
}

.ensemble-primary-controls label > span,
.laboratory-controls label > span {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.ensemble-primary-controls output,
.laboratory-controls output { color: var(--ink); font-variant-numeric: tabular-nums; }

.realism-disclosure {
  border-top: 1px solid var(--line);
  padding-top: 0.9rem;
}

.realism-disclosure summary,
#background-laboratory > summary {
  cursor: pointer;
  color: var(--teal-deep);
  font-weight: 750;
}

.realism-disclosure summary::marker,
#background-laboratory > summary::marker { color: var(--orange); }

.realism-body { padding-top: 0.9rem; }

.component-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0;
}

.component-grid > div {
  min-width: 0;
  padding: 0.85rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: color-mix(in srgb, var(--paper) 65%, transparent);
}

.component-grid dt { color: var(--muted); font-size: 0.69rem; }
.component-grid dd { margin: 0.1rem 0; font-family: var(--serif); font-size: 1.1rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.component-grid small { display: block; color: var(--muted); font-size: 0.64rem; }
.component-grid small[id$="-law"] { margin-bottom: 0.18rem; color: var(--ink); font-weight: 700; }

.range-endpoints {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.61rem;
  line-height: 1.25;
}
.range-endpoints span:last-child { text-align: right; }
.range-endpoints b { color: var(--ink); font-variant-numeric: tabular-nums; }

.ensemble-scope-note {
  grid-column: 1 / -1;
  margin: 0 0 0.65rem;
  padding: 0.55rem 0.7rem;
  border-left: 3px solid var(--teal);
  color: var(--muted);
  background: var(--teal-soft);
  font-size: 0.72rem;
  line-height: 1.45;
}

#uncertainty-mode-explanation,
.law-boundary {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.law-boundary {
  padding: 0.75rem 0.9rem;
  border-left: 3px solid var(--orange);
  background: color-mix(in srgb, var(--orange-soft) 24%, transparent);
}

#custom-direction-label.is-disabled { opacity: 0.55; }

.ensemble-metric-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.65rem;
}

.metric-counterline {
  display: grid;
  gap: 0.12rem;
  margin-top: 0.65rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--line);
}

.metric-counterline span { color: var(--muted); font-size: 0.65rem; }
.metric-counterline output { color: var(--ink); font-family: var(--serif); font-size: 1rem; font-weight: 760; font-variant-numeric: tabular-nums; }
.metric-counterline small { color: var(--muted); font-size: 0.61rem; }

.ensemble-plot-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 0.8rem;
}

.ensemble-plot-card {
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-small);
  background: var(--surface);
  overflow: hidden;
}

.ensemble-plot-card figcaption { min-height: 4.3rem; padding: 0.85rem 1rem; border-bottom: 1px solid var(--line); }
.ensemble-plot-card figcaption strong, .ensemble-plot-card figcaption span { display: block; }
.ensemble-plot-card figcaption span { color: var(--muted); font-size: 0.72rem; }
.ensemble-plot-card svg, #laboratory-chart { display: block; width: 100%; height: auto; background: var(--wt-chart-bg); }
.ensemble-plot-card svg text, #laboratory-chart text { fill: var(--ink); font-family: var(--sans); font-size: 11px; }
.ensemble-plot-card .grid-line, #laboratory-chart .grid-line { stroke: var(--grid); }
.ensemble-plot-card .axis, #laboratory-chart .axis { stroke: var(--line); fill: none; }
.ensemble-plot-card .coverage-series { stroke: var(--teal); stroke-width: 2.5; fill: none; }
.ensemble-plot-card .survival-series { stroke: var(--orange); stroke-width: 2.5; fill: none; }
.ensemble-plot-card .predicted-area { fill: color-mix(in srgb, var(--teal) 16%, transparent); }
.ensemble-plot-card .observed-area { fill: color-mix(in srgb, var(--orange) 18%, transparent); }
.ensemble-plot-card .predicted-median-series { stroke: var(--teal); stroke-width: 2; stroke-dasharray: 7 5; fill: none; }
.ensemble-plot-card .median-series { stroke: var(--violet); stroke-width: 2.4; fill: none; }
.coverage-series-key { height: 0; border-top: 2px solid var(--teal); }
.survival-series-key { height: 0; border-top: 2px solid var(--orange); }
.predicted-band-key { background: color-mix(in srgb, var(--teal) 20%, transparent); border: 1px solid var(--teal); }
.predicted-median-key { height: 0; border-top: 2px dashed var(--teal); }
.observed-band-key { background: color-mix(in srgb, var(--orange) 20%, transparent); border: 1px solid var(--orange); }
.median-key { height: 0; border-top: 2px solid var(--violet); }

.ensemble-spread-ledger {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  border: 1px solid var(--line);
  border-top: 0;
  border-radius: 0 0 var(--radius-small) var(--radius-small);
  background: var(--surface);
}

.ensemble-spread-ledger div { min-width: 0; padding: 0.75rem 0.9rem; border-right: 1px solid var(--line); }
.ensemble-spread-ledger div:last-child { border-right: 0; }
.ensemble-spread-ledger dt { color: var(--muted); font-size: 0.67rem; }
.ensemble-spread-ledger dd { margin: 0.15rem 0 0; font-size: 0.78rem; font-weight: 750; font-variant-numeric: tabular-nums; }

.member-disclosure { margin-top: 0.8rem; border: 1px solid var(--line); border-radius: var(--radius-small); background: var(--surface); overflow: hidden; }
.member-disclosure > summary { padding: 0.8rem 1rem; color: var(--teal-deep); cursor: pointer; font-size: 0.78rem; font-weight: 750; }
.member-disclosure .table-wrap { border: 0; border-top: 1px solid var(--line); border-radius: 0; }
.member-disclosure caption { padding: 0.65rem 0.8rem; color: var(--muted); text-align: left; font-size: 0.7rem; }
.member-disclosure td { max-width: 280px; overflow: hidden; text-overflow: ellipsis; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.7rem; }
.member-disclosure tr[data-outlier="true"] { background: color-mix(in srgb, var(--orange-soft) 34%, transparent); }
.member-disclosure tr[data-outlier="true"] td:first-child { color: var(--orange); font-weight: 800; }

#background-laboratory {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-small);
  overflow: hidden;
}

#background-laboratory > summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.1rem 1.3rem;
  list-style-position: inside;
}

#background-laboratory > summary span:first-child small,
#background-laboratory > summary span:first-child strong { display: block; }
#background-laboratory > summary span:first-child small { color: var(--muted); font-size: 0.68rem; letter-spacing: 0.09em; text-transform: uppercase; }
#background-laboratory > summary span:first-child strong { color: var(--ink); font-family: var(--serif); font-size: 1.25rem; }

.laboratory-body { padding: 1.2rem; border-top: 1px solid var(--line); }
.laboratory-boundary { margin: 0 0 1rem; padding: 0.8rem 0.95rem; border-left: 3px solid var(--orange); background: color-mix(in srgb, var(--orange-soft) 22%, transparent); color: var(--muted); font-size: 0.76rem; }
.laboratory-controls { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.9rem; }
.law-sweep { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 0.6rem 1.2rem; margin: 0; padding: 0.8rem; border: 1px solid var(--line); border-radius: 9px; }
.law-sweep legend { color: var(--muted); font-size: 0.7rem; font-weight: 750; }
.law-sweep label { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.76rem; }
.law-sweep input { accent-color: var(--teal); }
.form-help { grid-column: 1 / -1; margin: 0; color: var(--muted); font-size: 0.7rem; }
.laboratory-actions { grid-column: 1 / -1; display: flex; flex-wrap: wrap; align-items: center; gap: 0.55rem; padding-top: 0.8rem; border-top: 1px solid var(--line); }
.laboratory-actions output { margin-left: auto; color: var(--muted); font-size: 0.72rem; }
.laboratory-progress { margin-top: 1rem; }
.laboratory-progress label { display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: 0.75rem; }
.laboratory-progress progress { width: 100%; height: 0.7rem; accent-color: var(--teal); }
.laboratory-results-grid { display: grid; grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1.2fr); gap: 0.8rem; margin-top: 1rem; }
.laboratory-results-grid > figure { min-width: 0; margin: 0; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.laboratory-results-grid figcaption { min-height: 4.1rem; padding: 0.75rem 0.9rem; border-bottom: 1px solid var(--line); }
.laboratory-results-grid figcaption strong, .laboratory-results-grid figcaption span { display: block; }
.laboratory-results-grid figcaption span { color: var(--muted); font-size: 0.7rem; }
.laboratory-table-wrap { max-height: 430px; }
.laboratory-table-wrap caption { padding: 0.65rem 0.8rem; color: var(--muted); text-align: left; font-size: 0.7rem; }
#laboratory-empty-row td { padding-block: 2rem; color: var(--muted); text-align: center; }

@media (max-width: 1180px) {
  .controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ensemble-primary-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ensemble-metric-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .laboratory-controls { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .run-controls { grid-column: 1 / -1; grid-template-columns: auto auto minmax(200px, 1fr); padding: 1rem 0 0; border-left: 0; border-top: 1px solid var(--line); align-items: center; }
  .run-status { margin: 0; text-align: right; }
  .comparison-grid { grid-template-columns: 1fr; }
  .canvas-stage, .sensor-chart-wrap { height: min(68vw, 620px); min-height: 0; }
}

@media (max-width: 900px) {
  .hero, .evidence-strip, .certificate-card { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero { align-items: start; }
  .experiment-contract { max-width: 600px; }
  .tier-list { grid-template-columns: 1fr; }
  .tier { grid-template-columns: auto 1fr auto; }
  .tier output { grid-column: auto; text-align: right; }
  .metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ensemble-plot-grid, .laboratory-results-grid { grid-template-columns: 1fr; }
  .component-grid, .ensemble-spread-ledger { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ensemble-spread-ledger div:nth-child(2) { border-right: 0; }
  .ensemble-spread-ledger div:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .diagnostic-grid, .atlas-grid { grid-template-columns: 1fr; }
  .certificate-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .certificate-stats dd { font-size: 1rem; }
}

@media (max-width: 700px) {
  .site-header, main, .site-footer { width: min(100% - 1rem, var(--max-width)); }
  .site-header { align-items: flex-start; padding: 0.8rem 0; }
  .wordmark strong { display: none; }
  .site-header nav { justify-content: flex-end; }
  .hero { padding-top: 3.4rem; }
  h1 { font-size: clamp(2.7rem, 14vw, 4.2rem); }
  .section-heading, .compact-heading { display: block; }
  .section-heading > p, .compact-heading > p { margin-top: 0.55rem; text-align: left; }
  .forecast-seal { margin-top: 0.8rem; }
  .controls, .controls fieldset { grid-template-columns: 1fr; }
  .ensemble-primary-controls, .laboratory-controls { grid-template-columns: 1fr; }
  .ensemble-metric-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .component-grid { grid-template-columns: 1fr; }
  .controls fieldset + fieldset { padding-top: 1rem; border-top: 1px solid var(--line); }
  .run-controls { grid-template-columns: 1fr 1fr; }
  .run-status { grid-column: 1 / -1; text-align: left; }
  .canvas-stage, .sensor-chart-wrap { height: 420px; min-height: 0; }
  .metric-grid, .gain-gauges { grid-template-columns: 1fr; }
  .direction-grid { grid-template-columns: 1fr; }
  .direction-grid > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .direction-grid > div:last-child { border-bottom: 0; }
  .atlas-figure > header { align-items: flex-start; flex-direction: column; }
  .atlas-figure select { min-width: 0; }
  .recommendation-card { grid-template-columns: auto 1fr; }
  .recommendation-card button { grid-column: 1 / -1; }
  .certificate-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  #background-laboratory > summary { align-items: flex-start; flex-direction: column; }
  .laboratory-actions output { width: 100%; margin-left: 0; }
  .interpretation-grid { grid-template-columns: 1fr; }
}

@media (max-width: 440px) {
  .site-header nav { display: grid; gap: 0.25rem; text-align: right; }
  .control-deck { padding: 1rem 0.8rem; }
  .ensemble-deck { padding: 1rem 0.8rem; }
  .run-controls { grid-template-columns: 1fr; }
  .run-status { grid-column: auto; }
  .panel-heading { align-items: flex-start; }
  .canvas-stage, .sensor-chart-wrap { height: 360px; min-height: 0; }
  .playback-controls { grid-template-columns: auto auto minmax(50px, 1fr); }
  .playback-controls label { grid-column: 1 / -1; }
  .atlas-legend { grid-template-columns: auto 1fr auto; }
  .unresolved-key { grid-column: 1 / -1; margin: 0; }
  .certificate-stats { grid-template-columns: 1fr; }
  .ensemble-metric-grid, .ensemble-spread-ledger { grid-template-columns: 1fr; }
  .ensemble-spread-ledger div { border-right: 0; border-bottom: 1px solid var(--line); }
  .ensemble-spread-ledger div:last-child { border-bottom: 0; }
  th, td { padding-inline: 0.7rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.001ms !important; animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; }
}

@media (prefers-contrast: more) {
  :root { --line: currentColor; }
  .primary-button { outline: 2px solid currentColor; }
}