/* Aerithm / The Refracted Training Dossier */

:root {
  color-scheme: light;
  --paper: var(--aerithm-bg);
  --paper-raised: var(--aerithm-bg);
  --mist: var(--aerithm-bg-soft);
  --ink: var(--aerithm-txt);
  --graphite: var(--aerithm-txt-secondary);
  --muted: var(--aerithm-mut);
  --rule: var(--aerithm-grid);
  --rule-strong: var(--aerithm-grid-strong);
  --indigo: var(--aerithm-hero);
  --deep: var(--aerithm-data);
  --celadon: var(--aerithm-positive);
  --surface-page: var(--paper);
  --surface-raised: var(--paper-raised);
  --surface-soft: var(--mist);
  --text-primary: var(--ink);
  --text-secondary: var(--graphite);
  --text-muted: var(--muted);
  --border: var(--rule);
  --border-strong: var(--rule-strong);
  --accent: var(--deep);
  --accent-bright: var(--indigo);
  --accent-contrast: var(--paper);
  --header: rgb(255 255 255 / .94);
  --chart-grid: var(--aerithm-grid);
  --chart-muted: var(--aerithm-ramp-3);
  --chart-data: var(--deep);
  --chart-projection: var(--indigo);
  --focus: var(--indigo);
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --duration-fast: 150ms;
  --duration-long: 900ms;
  --ease-out: cubic-bezier(.16, 1, .3, 1);
}

*, *::before, *::after { box-sizing: border-box; }

.journey-sandbox-banner {
  padding: 7px 18px;
  border-bottom: 1px solid var(--ink);
  background: var(--celadon);
  font: 750 11px/1.2 var(--font-mono);
  letter-spacing: .09em;
  text-align: center;
}

html {
  overflow-x: clip;
  scroll-behavior: smooth;
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: clip;
  background: var(--surface-page);
  color: var(--text-primary);
  font-family: var(--font-editorial);
  font-size: 1rem;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

img { display: block; max-width: 100%; }
button { color: inherit; font: inherit; }
a { color: inherit; }
h1, h2, h3, p { overflow-wrap: break-word; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: -5rem;
  left: 1rem;
  min-height: 2.75rem;
  padding: .7rem 1rem;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
}

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

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.section-shell {
  width: min(100%, 94rem);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 4.5rem);
}

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  display: grid;
  grid-template-columns: minmax(9.5rem, 1fr) auto;
  width: min(100%, 94rem);
  min-height: 4.5rem;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 4.5rem);
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--header);
  backdrop-filter: blur(18px);
}

.brand-link,
.footer-brand {
  display: inline-flex;
  min-width: 8.625rem;
  min-height: 2.75rem;
  align-items: center;
}

.brand-link { width: 9.25rem; }
.brand-link img,
.footer-brand img { width: 100%; height: auto; }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(.7rem, 1.65vw, 1.65rem);
  font: 500 .69rem/1 var(--font-technical);
  letter-spacing: .055em;
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav > a:not(.button) {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--text-muted);
  text-decoration: none;
}

.site-nav > a:not(.button):hover { color: var(--text-primary); }

.nav-toggle {
  display: none;
  min-width: 3.5rem;
  min-height: 2.75rem;
  border: 1px solid var(--border-strong);
  border-radius: 0;
  background: transparent;
  font: 500 .7rem/1 var(--font-technical);
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: .75rem 1.2rem;
  border: 1px solid var(--accent);
  border-radius: 0;
  text-decoration: none;
  font: 600 .73rem/1 var(--font-technical);
  letter-spacing: .045em;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background-color var(--duration-fast) ease, color var(--duration-fast) ease, transform var(--duration-fast) ease;
}

.button-primary { background: var(--accent); color: var(--accent-contrast); }
.button-primary:hover { background: var(--accent-bright); }
.button:active { transform: translateY(1px); }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(26rem, 7fr);
  min-height: calc(100dvh - 4.5rem);
  gap: clamp(2.5rem, 6vw, 6rem);
  align-items: center;
  padding-block: clamp(2rem, 5vw, 4.5rem);
}

.hero-copy { max-width: 42rem; }

.kicker,
.section-opening > p:first-child,
.chart-template,
.evidence-label,
.decision-ledger span,
.beta-status > span {
  color: var(--accent-bright);
  font: 600 .68rem/1.3 var(--font-technical);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.kicker { margin: 0 0 1.5rem; }

h1 {
  max-width: 9ch;
  margin: 0;
  font-size: clamp(3.35rem, 6.5vw, 6rem);
  font-weight: 300;
  letter-spacing: -.04em;
  line-height: .91;
  text-wrap: balance;
}

.hero-summary {
  max-width: 34rem;
  margin: 2rem 0 0;
  color: var(--text-secondary);
  font-size: clamp(1rem, 1.25vw, 1.16rem);
}

.hero-actions {
  display: flex;
  margin-top: 2rem;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.text-link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--accent-bright);
  font: 600 .72rem/1 var(--font-technical);
  letter-spacing: .045em;
  text-underline-offset: .35rem;
  text-transform: uppercase;
}

.hero-ledger {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  max-width: 34rem;
  margin: clamp(3rem, 8vh, 6rem) 0 0;
  border-top: 1px solid var(--border-strong);
}

.hero-ledger div { padding: .85rem .75rem 0 0; border-right: 1px solid var(--border); }
.hero-ledger div:last-child { border-right: 0; padding-left: .75rem; }
.hero-ledger div:nth-child(2) { padding-left: .75rem; }
.hero-ledger dt { color: var(--text-muted); font: 600 .62rem/1 var(--font-technical); }
.hero-ledger dd { margin: .5rem 0 0; color: var(--text-secondary); font-size: .82rem; }

.hero-visual {
  position: relative;
  width: 100%;
  max-width: 45rem;
  max-height: calc(100dvh - 7.5rem);
  margin: 0 0 0 auto;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  background: var(--surface-soft);
}

.hero-visual::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 58%, rgb(17 22 42 / .78));
  content: "";
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  height: min(51rem, calc(100dvh - 7.5rem));
  object-fit: cover;
  object-position: 54% center;
}

.hero-visual figcaption {
  position: absolute;
  z-index: 2;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  left: clamp(1rem, 3vw, 2rem);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 1rem;
  color: #ffffff;
}

.hero-visual figcaption span { font: 600 .66rem/1.4 var(--font-technical); letter-spacing: .08em; text-transform: uppercase; }
.hero-visual figcaption strong { max-width: 8ch; font-size: clamp(1.25rem, 2.5vw, 2.5rem); font-weight: 350; letter-spacing: -.03em; line-height: .98; text-align: right; }

.signal,
.decision,
.control { padding-block: clamp(6rem, 11vw, 10rem); }

.signal {
  border-top: 1px solid var(--border-strong);
  scroll-margin-top: 5.5rem;
}

.section-opening {
  display: grid;
  grid-template-columns: minmax(10rem, 3fr) minmax(0, 6fr) minmax(16rem, 3fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start;
}

.section-opening > p { margin: .35rem 0 0; }
.section-opening > p:last-child { max-width: 34rem; color: var(--text-secondary); }

.section-opening h2,
.decision-opening h2,
.control h2,
.beta h2 {
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 5rem);
  font-weight: 300;
  letter-spacing: -.04em;
  line-height: .96;
  text-wrap: balance;
}

.chart-sheet {
  margin-top: clamp(3.5rem, 7vw, 6.5rem);
  border-top: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
}

.chart-heading {
  display: grid;
  grid-template-columns: minmax(15rem, 1fr) auto;
  gap: 2rem;
  padding-block: 1.25rem;
  align-items: end;
}

.chart-heading h3 {
  margin: .55rem 0 0;
  font-size: clamp(1.35rem, 2.2vw, 2.1rem);
  font-weight: 400;
  letter-spacing: -.025em;
}

.chart-template { margin: 0; color: var(--text-muted); }

.chart-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: .75rem;
  flex-wrap: wrap;
}

.chart-tabs { display: flex; border: 1px solid var(--border); }

.chart-tabs button,
.chart-replay {
  min-width: 44px;
  min-height: 44px;
  padding: .65rem .85rem;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--text-muted);
  font: 600 .65rem/1 var(--font-technical);
  letter-spacing: .04em;
  text-transform: uppercase;
  cursor: pointer;
}

.chart-tabs button + button { border-left: 1px solid var(--border); }
.chart-tabs button:hover,
.chart-replay:hover { color: var(--text-primary); background: color-mix(in srgb, var(--surface-soft) 70%, transparent); }
.chart-tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-contrast); }
.chart-replay { border: 1px solid var(--border); }

.chart-stage {
  min-height: 25rem;
  border-top: 1px solid var(--border);
  background: var(--surface-raised);
}

.chart-stage svg {
  display: block;
  width: 100%;
  min-height: 25rem;
  max-height: 34rem;
  color: var(--chart-data);
}

.chart-axis { stroke: var(--chart-grid); stroke-width: 1; vector-effect: non-scaling-stroke; }
.chart-calendar { stroke: var(--chart-grid); stroke-width: .8; vector-effect: non-scaling-stroke; }
.chart-line { fill: none; stroke: var(--chart-data); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.chart-line.is-projection { stroke: var(--chart-projection); stroke-dasharray: 5 5; }
.chart-hair { stroke: var(--chart-muted); stroke-width: .7; vector-effect: non-scaling-stroke; }
.chart-hair.is-projection { stroke: var(--chart-projection); stroke-dasharray: 2 3; }
.chart-hair.is-selected { stroke: var(--chart-data); stroke-width: 2; }
.chart-dot { fill: var(--chart-data); stroke: var(--chart-data); stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.chart-dot.is-weekend { fill: var(--surface-raised); }
.chart-dot.is-peak { stroke-width: 2; }
.chart-dot.is-selected { r: 6px; stroke-width: 2.5; }
.chart-sheet svg:focus-visible { outline: 2px solid var(--focus); outline-offset: 4px; }
.chart-split { stroke: var(--chart-muted); stroke-width: 1; stroke-dasharray: 2 5; vector-effect: non-scaling-stroke; }
.chart-label { fill: var(--text-muted); font: 600 10px/1 var(--font-technical); letter-spacing: .08em; text-transform: uppercase; }
.chart-value { fill: var(--text-primary); font: 700 13px/1 var(--font-technical); paint-order: stroke; stroke: var(--surface-raised); stroke-width: 5px; stroke-linejoin: round; }
.chart-unit { fill: var(--text-muted); font: 600 9px/1 var(--font-technical); letter-spacing: .08em; }

.chart-sheet.is-animating .chart-line {
  animation: chart-draw var(--duration-long) var(--ease-out) forwards;
}

.chart-sheet.is-animating .chart-dot,
.chart-sheet.is-animating .chart-hair {
  animation: chart-reveal 540ms var(--ease-out) both;
  animation-delay: var(--chart-delay, 0ms);
}

@keyframes chart-draw {
  from { clip-path: inset(0 100% 0 0); }
  to { clip-path: inset(0); }
}
@keyframes chart-reveal {
  from { opacity: .18; }
  to { opacity: 1; }
}

.chart-foot {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem;
  padding-block: 1rem;
  align-items: start;
  color: var(--text-muted);
  font: 600 .64rem/1.55 var(--font-technical);
  letter-spacing: .045em;
  text-transform: uppercase;
}

.chart-foot p { margin: 0; }
.chart-summary { max-width: 64ch; color: var(--text-secondary); text-transform: none; }

.evidence-split {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(27rem, 5fr);
  gap: clamp(2rem, 4vw, 4rem);
  margin-top: clamp(3.5rem, 7vw, 6.5rem);
  align-items: start;
}

.evidence-split > .chart-sheet { margin-top: 0; }

.evidence-mosaic {
  min-width: 0;
  border-top: 1px solid var(--border-strong);
}

.evidence-mosaic-head {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(10rem, .8fr);
  min-height: 8rem;
  padding: 1.25rem 0;
  align-items: start;
  gap: 1.25rem;
}

.evidence-mosaic-head h3 {
  margin: 0;
  font-size: clamp(1.55rem, 2.4vw, 2.65rem);
  font-weight: 350;
  letter-spacing: -.035em;
  line-height: .98;
}

.evidence-mosaic-head p {
  margin: .1rem 0 0;
  color: var(--text-secondary);
  font-size: .78rem;
  line-height: 1.5;
}

.evidence-ledger {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--border-strong);
  border-left: 1px solid var(--border-strong);
}

.evidence-cell,
.evidence-image {
  position: relative;
  min-width: 0;
  min-height: 12.25rem;
  margin: 0;
  overflow: hidden;
  border-right: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
}

.evidence-cell {
  padding: clamp(1rem, 1.8vw, 1.5rem);
  background: var(--surface-raised);
}

.evidence-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: .65rem;
  color: var(--accent-bright);
  font-size: .58rem;
}

.evidence-label small { color: var(--text-muted); font: inherit; letter-spacing: .02em; text-align: right; }
.evidence-name { margin: clamp(1.4rem, 3vw, 2.5rem) 0 .55rem; color: var(--text-secondary); font-size: .76rem; }
.evidence-cell > strong { position: relative; z-index: 2; display: inline-block; max-width: 100%; font-size: clamp(2.05rem, 4.1vw, 4.2rem); font-weight: 300; letter-spacing: -.04em; line-height: .86; }
.evidence-unit { display: inline-block; max-width: 7.5rem; margin-left: .55rem; color: var(--text-secondary); font: 600 .55rem/1.4 var(--font-technical); text-transform: uppercase; }
.evidence-note { position: absolute; z-index: 2; right: 1rem; bottom: .8rem; margin: 0; color: var(--text-muted); font: 600 .51rem/1.3 var(--font-technical); text-transform: uppercase; }

.evidence-measured { background: var(--deep); color: #ffffff; }
.evidence-measured .evidence-label,
.evidence-measured .evidence-label small,
.evidence-measured .evidence-name,
.evidence-measured .evidence-unit,
.evidence-measured .evidence-note { color: #dce6f4; }

.evidence-derived { background: #eef3f8; }
.evidence-reported { background: #ffffff; }
.evidence-inferred { background: var(--celadon); color: var(--ink); }
.evidence-inferred .evidence-label,
.evidence-inferred .evidence-name,
.evidence-inferred .evidence-unit,
.evidence-inferred .evidence-note { color: #33463b; }

.evidence-image img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 760ms var(--ease-out), filter 760ms var(--ease-out); }
.evidence-image-verge img { object-position: 42% 58%; }
.evidence-image-refraction img { object-position: 58% 48%; }
.evidence-image:hover img { transform: scale(1.025); filter: saturate(.88) contrast(1.04); }
.evidence-image::after { position: absolute; inset: 52% 0 0; background: linear-gradient(transparent, rgb(10 22 33 / .72)); content: ""; pointer-events: none; }
.evidence-image figcaption { position: absolute; z-index: 1; right: .9rem; bottom: .8rem; left: .9rem; color: #ffffff; font: 600 .52rem/1.35 var(--font-technical); letter-spacing: .045em; text-transform: uppercase; }

.effort-dots { position: absolute; right: 1rem; bottom: 2.15rem; left: 1rem; display: flex; gap: .5rem; }
.effort-dots span { width: .6rem; height: .6rem; border: 1px solid var(--border-strong); border-radius: 50%; }
.effort-dots .is-filled { border-color: var(--indigo); background: var(--indigo); }

.decision-opening {
  display: grid;
  grid-template-columns: minmax(12rem, 4fr) minmax(0, 8fr);
  gap: clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.decision-number {
  margin: -.08em 0 0;
  color: var(--accent);
  font-size: clamp(7rem, 17vw, 16rem);
  font-weight: 250;
  letter-spacing: -.04em;
  line-height: .72;
}

.decision-opening > div > p { max-width: 38rem; margin: 1.5rem 0 0; color: var(--text-secondary); }

.decision-grid {
  display: grid;
  grid-template-columns: minmax(0, 8fr) minmax(20rem, 4fr);
  margin-top: clamp(3rem, 6vw, 5rem);
  border-top: 1px solid var(--border-strong);
}

.decision-grid .chart-sheet { margin: 0; border-top: 0; }

.decision-ledger {
  border-right: 1px solid var(--border-strong);
  border-bottom: 1px solid var(--border-strong);
  border-left: 1px solid var(--border-strong);
}

.decision-ledger > div { min-height: 9.5rem; padding: 1.5rem; border-bottom: 1px solid var(--border); }
.decision-ledger strong { display: block; margin-top: 1.35rem; font-size: 1.35rem; font-weight: 450; letter-spacing: -.02em; line-height: 1.08; }
.decision-ledger p { margin: 1.35rem 0 0; color: var(--text-secondary); font-size: .92rem; }
.decision-ledger > small { display: block; padding: 1.5rem; color: var(--text-muted); font: 600 .62rem/1.55 var(--font-technical); text-transform: uppercase; }

.control {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(21rem, 5fr);
  gap: clamp(3rem, 8vw, 8rem);
  border-top: 1px solid var(--border-strong);
}

.control-copy p { max-width: 39rem; margin: 2rem 0 0; color: var(--text-secondary); }
.control-facts { margin: 0; }
.control-facts div { padding: 1.4rem 0 2rem; border-top: 1px solid var(--border); }
.control-facts div:first-child { border-top-color: var(--border-strong); }
.control-facts dt { font: 600 .7rem/1.35 var(--font-technical); letter-spacing: .04em; text-transform: uppercase; }
.control-facts dd { margin: 1rem 0 0; color: var(--text-secondary); }

.beta {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(21rem, 5fr);
  gap: clamp(3rem, 8vw, 8rem);
  padding-block: clamp(6rem, 11vw, 10rem);
  border-top: 1px solid var(--border-strong);
  background: var(--surface-soft);
  color: var(--text-primary);
}

.beta-status > span { display: block; margin-bottom: 2rem; color: var(--accent-bright); }
.beta-copy p { max-width: 37rem; margin: 0; color: var(--text-secondary); }
.beta-copy p + p { margin-top: 1.5rem; color: var(--text-primary); }
.button-light { margin-top: 2rem; border-color: var(--deep); background: var(--deep); color: #ffffff; }
.button-light:hover { background: var(--indigo); }

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  width: min(100%, 94rem);
  min-height: 8rem;
  margin-inline: auto;
  padding: 2rem clamp(1.25rem, 4vw, 4.5rem);
  align-items: center;
  gap: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font: 600 .65rem/1.4 var(--font-technical);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.footer-brand { width: 8.625rem; }
.site-footer p { margin: 0; }

[data-reveal] {
  opacity: 1;
  transform: translateY(1rem);
  transition: transform 720ms var(--ease-out);
}

[data-reveal].is-visible { transform: translateY(0); }

@media (max-width: 67rem) {
  .site-nav { gap: .8rem; }
  .hero { grid-template-columns: minmax(0, 1fr) minmax(22rem, .9fr); gap: 3rem; }
  .section-opening { grid-template-columns: minmax(8rem, 2fr) minmax(0, 5fr); }
  .section-opening > p:last-child { grid-column: 2; }
  .evidence-split { grid-template-columns: 1fr; }
  .evidence-mosaic { margin-top: 2rem; }
  .decision-grid { grid-template-columns: 1fr; }
  .decision-ledger { display: grid; grid-template-columns: repeat(3, 1fr); border-left: 0; }
  .decision-ledger > div { min-height: 0; border-right: 1px solid var(--border); }
  .decision-ledger > small { grid-column: 1 / -1; }
}

@media (max-width: 54rem) {
  .site-header { grid-template-columns: 1fr auto; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-nav {
    position: absolute;
    top: 100%;
    right: clamp(1.25rem, 4vw, 4.5rem);
    left: clamp(1.25rem, 4vw, 4.5rem);
    display: none;
    padding: .75rem 1rem 1rem;
    border: 1px solid var(--border-strong);
    background: var(--surface-raised);
    white-space: normal;
  }
  .site-nav[data-open="true"] { display: grid; }
  .site-nav a { justify-content: flex-start; border-bottom: 1px solid var(--border); }
  .site-nav .button { margin-top: .75rem; justify-content: center; border-bottom-color: var(--accent); }
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-copy { padding-top: 2rem; }
  .hero-visual { max-width: none; max-height: none; }
  .hero-visual img { height: clamp(32rem, 112vw, 45rem); }
  .section-opening,
  .decision-opening,
  .control,
  .beta { grid-template-columns: 1fr; }
  .section-opening > p:last-child { grid-column: auto; }
  .decision-number { margin-bottom: 1rem; }
}

@media (max-width: 41rem) {
  .section-shell { padding-inline: 1.1rem; }
  .site-header { padding-inline: 1.1rem; }
  .hero { padding-top: 1rem; gap: 2.25rem; }
  h1 { font-size: clamp(3.15rem, 17vw, 4.5rem); }
  .hero-ledger { margin-top: 3rem; }
  .hero-ledger dd { font-size: .72rem; }
  .hero-visual figcaption { grid-template-columns: 1fr; }
  .hero-visual figcaption strong { text-align: left; }
  .chart-heading { grid-template-columns: 1fr; gap: 1rem; }
  .chart-actions { justify-content: flex-start; }
  .chart-tabs { width: 100%; }
  .chart-tabs button { flex: 1; padding-inline: .35rem; }
  .chart-replay { width: 100%; }
  .chart-stage,
  .chart-stage svg { min-height: 20rem; }
  .chart-foot { grid-template-columns: 1fr; gap: .75rem; }
  .evidence-mosaic-head { grid-template-columns: 1fr; min-height: 0; }
  .evidence-cell,
  .evidence-image,
  .evidence-image img { min-height: 10.5rem; }
  .evidence-cell > strong { font-size: clamp(1.8rem, 9vw, 2.7rem); }
  .evidence-unit { display: block; margin: .55rem 0 0; }
  .evidence-label { align-items: flex-start; }
  .evidence-label small { max-width: 7ch; }
  .decision-ledger { grid-template-columns: 1fr; }
  .decision-ledger > div { border-right: 0; }
  .site-footer { grid-template-columns: 1fr; min-height: 11rem; gap: .5rem; align-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
}