:root {
  --canvas: #f3efe7;
  --surface: #fffcf5;
  --surface-2: #e9e1d4;
  --ink: #20272a;
  --ink-2: #4c585c;
  --muted: #6f7b7e;
  --line: rgba(32, 39, 42, 0.14);
  --line-strong: rgba(32, 39, 42, 0.26);
  --teal: #0c766f;
  --teal-soft: #d6efeb;
  --blue: #315b72;
  --blue-soft: #dce8ef;
  --coral: #bd5a3c;
  --coral-soft: #f2dcd2;
  --gold: #a77720;
  --gold-soft: #f0dfb8;
  --green: #557a4d;
  --green-soft: #deead8;
  --plum: #6d4b64;
  --shadow: 0 18px 44px rgba(54, 44, 32, 0.12);
  --radius: 8px;
  --z-header: 30;
  --z-file: 10;
  --ease-out: cubic-bezier(0.165, 0.84, 0.44, 1);
  --ease-move: cubic-bezier(0.77, 0, 0.175, 1);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(32, 39, 42, 0.04) 1px, transparent 1px),
    linear-gradient(rgba(32, 39, 42, 0.03) 1px, transparent 1px),
    var(--canvas);
  background-size: 36px 36px;
  color: var(--ink);
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(243, 239, 231, 0.1), rgba(243, 239, 231, 0.94) 42%),
    linear-gradient(124deg, rgba(12, 118, 111, 0.08), transparent 38%, rgba(189, 90, 60, 0.07) 72%, transparent);
}

button,
input,
select {
  font: inherit;
}

button,
a {
  touch-action: manipulation;
}

button {
  border: 0;
  cursor: pointer;
}

button:focus-visible,
a:focus-visible,
pre:focus-visible {
  outline: 2px solid var(--ink);
  outline-offset: 3px;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.04;
  text-wrap: balance;
}

h1 {
  max-width: 12ch;
  font-size: clamp(3.05rem, 5.9vw, 6.2rem);
}

h2 {
  max-width: 13ch;
  font-size: clamp(2.25rem, 4.7vw, 4.8rem);
}

h3 {
  line-height: 1.16;
  font-size: clamp(1.1rem, 1.6vw, 1.45rem);
  text-wrap: balance;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #11191c;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 60;
  transform: translateY(-140%);
  border-radius: 6px;
  background: var(--ink);
  color: var(--surface);
  padding: 10px 14px;
  text-decoration: none;
  transition: transform 180ms var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
}

.progress-line {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 4px;
  background: rgba(32, 39, 42, 0.08);
}

.progress-line span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--teal), var(--gold), var(--coral));
}

.topbar {
  position: sticky;
  top: 4px;
  z-index: var(--z-header);
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 22px;
  width: min(1240px, calc(100% - 28px));
  min-height: 62px;
  margin: 10px auto 0;
  padding: 9px 12px;
  border-radius: var(--radius);
  background: rgba(255, 252, 245, 0.9);
  box-shadow: 0 0 0 1px var(--line), 0 12px 34px rgba(54, 44, 32, 0.09);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  color: var(--ink);
  font-weight: 760;
  text-decoration: none;
}

.mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 6px;
  background: var(--ink);
  color: var(--surface);
  font-size: 0.82rem;
  font-weight: 820;
}

.topbar nav {
  display: flex;
  justify-content: flex-end;
  gap: 4px;
  overflow-x: auto;
}

.topbar nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 10px;
  border-radius: 6px;
  color: var(--ink-2);
  font-weight: 680;
  text-decoration: none;
  white-space: nowrap;
}

.topbar nav a.active {
  background: rgba(12, 118, 111, 0.1);
  color: var(--teal);
}

.scene,
.chapter {
  padding-inline: max(20px, calc((100vw - 1240px) / 2));
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(420px, 1.04fr);
  align-items: center;
  gap: clamp(28px, 6vw, 72px);
  min-height: calc(100dvh - 112px);
  padding-top: clamp(24px, 5vw, 52px);
  padding-bottom: clamp(42px, 6vw, 66px);
  overflow: clip;
}

.hero-copy {
  display: grid;
  gap: 22px;
}

.eyebrow,
.section-number {
  color: var(--plum);
  font-size: 0.78rem;
  font-weight: 820;
  letter-spacing: 0;
  text-transform: uppercase;
}

.lede {
  max-width: 58ch;
  color: var(--ink-2);
  font-size: clamp(1.08rem, 1.7vw, 1.34rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.primary-link,
.ghost-link,
.choice-card,
.select-list button,
.move-list button,
.slot,
.memory-check button,
.feedback-choices button,
#runOldCourse,
#copyPlan,
.topic-pill {
  min-height: 44px;
  border-radius: 7px;
  font-weight: 740;
  transition:
    transform 140ms var(--ease-out),
    background-color 150ms ease,
    color 150ms ease,
    box-shadow 150ms ease;
}

.primary-link,
#runOldCourse,
#copyPlan {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ink);
  color: var(--surface);
  padding: 11px 15px;
  text-decoration: none;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.ghost-link {
  background: rgba(32, 39, 42, 0.08);
  color: var(--ink);
  padding: 11px 15px;
}

@media (hover: hover) and (pointer: fine) {
  .primary-link:hover,
  .ghost-link:hover,
  .choice-card:hover,
  .select-list button:hover,
  .move-list button:hover,
  .slot:hover,
  .memory-check button:hover,
  .feedback-choices button:hover,
  #runOldCourse:hover,
  #copyPlan:hover,
  .topic-pill:hover {
    transform: translateY(-1px);
  }
}

button:active,
.primary-link:active {
  transform: scale(0.98);
}

.hero-art {
  position: relative;
  min-height: min(500px, 58vw);
}

.folder {
  position: relative;
  min-height: min(500px, 58vw);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 252, 245, 0.94), rgba(233, 225, 212, 0.82)),
    linear-gradient(90deg, rgba(49, 91, 114, 0.08), rgba(12, 118, 111, 0.08));
  box-shadow: var(--shadow), 0 0 0 1px var(--line);
  overflow: hidden;
}

.folder::before {
  content: "";
  position: absolute;
  left: 48px;
  top: 112px;
  right: 48px;
  height: 1px;
  background: var(--line);
}

.folder-tab {
  position: absolute;
  left: 42px;
  top: 38px;
  border-radius: 8px 8px 0 0;
  background: var(--blue);
  color: var(--surface);
  padding: 13px 18px;
  font-weight: 780;
}

.folder-page {
  position: absolute;
  display: grid;
  gap: 10px;
  width: min(300px, 44%);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 18px;
  box-shadow: 0 12px 30px rgba(54, 44, 32, 0.14), 0 0 0 1px var(--line);
}

.folder-page strong {
  margin-bottom: 6px;
}

.folder-page span {
  border-radius: 5px;
  background: rgba(49, 91, 114, 0.1);
  padding: 8px 10px;
  color: var(--ink-2);
  font-weight: 680;
}

.page-a {
  left: 58px;
  top: 138px;
  transform: rotate(-2deg);
}

.page-b {
  right: 58px;
  top: 174px;
  transform: rotate(2deg);
}

.page-b span {
  background: var(--teal-soft);
  color: #0b5f59;
}

.learner-note {
  position: absolute;
  left: 50%;
  bottom: 36px;
  display: grid;
  gap: 6px;
  width: min(410px, calc(100% - 64px));
  transform: translateX(-50%);
  border-left: 5px solid var(--coral);
  border-radius: 0 8px 8px 0;
  background: #fff5e8;
  padding: 16px;
  box-shadow: 0 0 0 1px var(--line);
}

.learner-note span {
  color: var(--ink-2);
}

.experience-shell {
  display: grid;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 60px);
  align-items: start;
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
}

.course-file {
  position: sticky;
  top: 86px;
  z-index: var(--z-file);
  display: grid;
  gap: 18px;
  max-height: calc(100dvh - 104px);
  overflow: auto;
  border-radius: var(--radius);
  background: rgba(255, 252, 245, 0.94);
  padding: 20px;
  box-shadow: var(--shadow), 0 0 0 1px var(--line);
}

.file-head {
  display: grid;
  gap: 8px;
}

.file-head h2 {
  max-width: none;
  font-size: 1.6rem;
}

.file-head p:last-child {
  color: var(--ink-2);
}

.file-section {
  display: grid;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.file-section h3 {
  font-size: 1rem;
}

.spine-list {
  display: grid;
  gap: 10px;
  margin: 0;
}

.spine-list div {
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: 10px;
  align-items: start;
}

.spine-list dt {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 760;
}

.spine-list dd {
  margin: 0;
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 680;
}

.learner-state {
  display: grid;
  gap: 12px;
}

.state-meter {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
}

.state-meter span {
  position: relative;
  min-height: 64px;
  overflow: hidden;
  border-radius: 6px;
  background: rgba(32, 39, 42, 0.08);
  box-shadow: inset 0 0 0 1px rgba(32, 39, 42, 0.06);
}

.state-meter span::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--fill, 22%);
  background: var(--bar, var(--teal));
  transition: height 300ms var(--ease-move);
}

#meterUse { --bar: var(--teal); --fill: 28%; }
#meterConfidence { --bar: var(--gold); --fill: 20%; }
#meterTransfer { --bar: var(--coral); --fill: 16%; }

.learner-state ul,
.found-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.learner-state li {
  border-radius: 6px;
  background: rgba(32, 39, 42, 0.05);
  padding: 9px 10px;
  color: var(--ink-2);
  font-size: 0.92rem;
}

.memory-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.memory-row span {
  border-radius: 999px;
  background: rgba(32, 39, 42, 0.07);
  padding: 6px 9px;
  color: var(--ink-2);
  font-size: 0.86rem;
  font-weight: 720;
}

.memory-row span.settled {
  background: var(--green-soft);
  color: var(--green);
}

.story {
  min-width: 0;
}

.chapter {
  padding: clamp(76px, 11vw, 136px) 0;
  border-top: 1px solid rgba(32, 39, 42, 0.1);
}

.chapter:first-child {
  border-top: 0;
  padding-top: 18px;
}

.chapter > p:not(.section-number),
.chapter > h2 {
  max-width: 760px;
}

.chapter > p:not(.section-number) {
  margin-top: 18px;
  color: var(--ink-2);
  font-size: clamp(1.04rem, 1.45vw, 1.22rem);
}

.section-number {
  margin-bottom: 14px;
  color: var(--coral);
}

.old-course-lab,
.decision-lab,
.alignment-studio,
.class-builder,
.feedback-lab,
.opening-lab,
.launch-board,
.instructor-note,
.memory-check {
  margin-top: clamp(28px, 5vw, 48px);
}

.old-course-lab {
  display: grid;
  grid-template-columns: minmax(220px, 0.85fr) minmax(360px, 1.15fr);
  gap: 18px;
  align-items: stretch;
}

.topic-board,
.semester-sim,
.prompt-card,
.decision-feedback,
.wire-map,
.alignment-controls,
.move-palette,
.hour-stage,
.misconception-board,
.feedback-choices,
.opening-scene,
.motivation-response,
.plan-panel,
.closing-claim {
  border-radius: var(--radius);
  background: rgba(255, 252, 245, 0.94);
  padding: 18px;
  box-shadow: 0 0 0 1px var(--line);
}

.topic-board {
  display: flex;
  flex-wrap: wrap;
  align-content: start;
  gap: 10px;
}

.topic-board h3 {
  flex: 0 0 100%;
}

.topic-pill {
  background: var(--blue-soft);
  color: #244a5e;
  padding: 9px 11px;
}

.semester-sim {
  display: grid;
  gap: 16px;
}

.sim-head,
.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.week-track {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 5px;
}

.week {
  display: grid;
  place-items: center;
  min-height: 58px;
  border-radius: 5px;
  background: rgba(49, 91, 114, 0.08);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 780;
}

.week.active {
  background: var(--coral-soft);
  color: #8f3d28;
  animation: flashWeek 500ms var(--ease-out);
}

.student-log {
  min-height: 132px;
  border-radius: 7px;
  background: #fff6e7;
  padding: 14px;
  color: var(--ink-2);
  box-shadow: inset 0 0 0 1px var(--line);
}

.student-log p + p {
  margin-top: 10px;
}

.instructor-note {
  display: grid;
  grid-template-columns: minmax(0, 0.84fr) minmax(320px, 1.16fr);
  gap: 18px;
  align-items: center;
  border-radius: var(--radius);
  background: #192326;
  color: var(--surface);
  padding: 20px;
}

.instructor-note p:not(.eyebrow) {
  color: rgba(255, 252, 245, 0.78);
}

.instructor-note video {
  border-radius: 7px;
}

.compact-note {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.9fr);
}

.decision-lab {
  display: grid;
  grid-template-columns: minmax(220px, 0.72fr) minmax(360px, 1.28fr);
  gap: 18px;
}

.prompt-card {
  display: grid;
  align-content: start;
  gap: 12px;
  background: #192326;
  color: var(--surface);
}

.prompt-card p {
  color: rgba(255, 252, 245, 0.78);
}

.choice-grid {
  display: grid;
  gap: 10px;
}

.choice-card {
  display: grid;
  gap: 6px;
  width: 100%;
  border: 1px solid transparent;
  background: var(--surface);
  color: var(--ink);
  padding: 15px;
  text-align: left;
  box-shadow: 0 0 0 1px var(--line);
}

.choice-card span {
  font-size: 1.04rem;
}

.choice-card small {
  color: var(--muted);
}

.choice-card.selected {
  background: var(--teal-soft);
  color: #074f4a;
  box-shadow: 0 0 0 2px var(--teal);
}

.decision-feedback,
.hidden-course,
.class-feedback,
.motivation-response {
  display: grid;
  gap: 6px;
  min-height: 94px;
  border-left: 5px solid var(--coral);
  background: #fff6e7;
  color: var(--ink-2);
}

.decision-feedback strong,
.hidden-course strong,
.motivation-response strong {
  color: var(--ink);
}

.memory-check {
  display: grid;
  grid-template-columns: minmax(220px, 0.74fr) minmax(360px, 1.26fr);
  gap: 18px;
  align-items: start;
  border-radius: var(--radius);
  background: linear-gradient(90deg, rgba(12, 118, 111, 0.1), rgba(49, 91, 114, 0.08));
  padding: 18px;
  box-shadow: 0 0 0 1px var(--line);
}

.check-options {
  display: grid;
  gap: 10px;
}

.memory-check button {
  background: var(--surface);
  color: var(--ink);
  padding: 12px;
  text-align: left;
  box-shadow: 0 0 0 1px var(--line);
}

.memory-check button.correct {
  background: var(--green-soft);
  color: var(--green);
  box-shadow: 0 0 0 2px var(--green);
}

.memory-check button.incorrect {
  background: var(--coral-soft);
  color: #8f3d28;
}

.check-feedback {
  grid-column: 2;
  color: var(--ink-2);
}

.alignment-studio {
  display: grid;
  grid-template-columns: minmax(380px, 1.2fr) minmax(270px, 0.8fr);
  gap: 18px;
  align-items: stretch;
}

.wire-map {
  min-height: 440px;
}

#wireSvg {
  display: block;
  width: 100%;
  height: auto;
}

.wire {
  stroke: rgba(32, 39, 42, 0.18);
  stroke-width: 5;
  stroke-linecap: round;
}

.wire.strong {
  stroke: var(--teal);
}

.wire.warn {
  stroke: var(--coral);
  stroke-dasharray: 12 12;
}

.node rect,
.node circle {
  fill: var(--surface);
  stroke: var(--line-strong);
  stroke-width: 2;
}

.node text {
  fill: var(--ink);
  font-size: 18px;
  font-weight: 760;
}

.node text + text {
  fill: var(--muted);
  font-size: 15px;
  font-weight: 680;
}

.alignment-controls {
  display: grid;
  align-content: start;
  gap: 22px;
}

.select-list,
.move-list,
.feedback-choices {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.select-list button,
.move-list button,
.feedback-choices button {
  background: var(--surface);
  color: var(--ink);
  padding: 12px 13px;
  text-align: left;
  box-shadow: 0 0 0 1px var(--line);
}

.select-list button.selected,
.move-list button.selected,
.feedback-choices button.selected {
  background: var(--teal-soft);
  color: #074f4a;
  box-shadow: 0 0 0 2px var(--teal);
}

.hidden-course {
  margin-top: 18px;
  padding: 16px;
}

.hidden-course.good {
  border-left-color: var(--teal);
  background: var(--teal-soft);
}

.class-builder {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(420px, 1.3fr);
  gap: 18px;
}

.move-palette,
.hour-stage {
  min-height: 420px;
}

.attention-plot {
  border-radius: var(--radius);
  background: #fff6e7;
  box-shadow: inset 0 0 0 1px var(--line);
}

#attentionSvg {
  display: block;
  width: 100%;
  height: auto;
}

#attentionSvg line {
  stroke: rgba(32, 39, 42, 0.18);
  stroke-width: 2;
}

#attentionCurve {
  fill: none;
  stroke: var(--coral);
  stroke-width: 6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

#attentionMarkers circle {
  fill: var(--teal);
  stroke: var(--surface);
  stroke-width: 4;
}

#attentionMarkers text {
  fill: var(--ink);
  font-size: 13px;
  font-weight: 780;
}

.slot-row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 7px;
  margin-top: 14px;
}

.slot {
  display: grid;
  place-items: center;
  min-height: 74px;
  background: rgba(49, 91, 114, 0.09);
  color: var(--ink-2);
  padding: 8px;
  text-align: center;
  box-shadow: 0 0 0 1px var(--line);
}

.slot.filled {
  background: var(--teal-soft);
  color: #074f4a;
  box-shadow: 0 0 0 2px rgba(12, 118, 111, 0.48);
}

.class-feedback {
  margin-top: 14px;
  padding: 14px;
}

.feedback-lab,
.opening-lab,
.launch-board {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(320px, 1fr);
  gap: 18px;
}

.misconception-board,
.feedback-choices,
.opening-scene,
.motivation-response {
  min-height: 300px;
}

.bug-line {
  margin-top: 16px;
  border-radius: 7px;
  background: #fff6e7;
  padding: 14px;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 740;
}

.persistence-bars {
  display: grid;
  gap: 8px;
  margin-top: 20px;
}

.persistence-row {
  display: grid;
  grid-template-columns: 74px 1fr;
  align-items: center;
  gap: 10px;
}

.persistence-row span:first-child {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 760;
}

.bar-shell {
  height: 18px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(32, 39, 42, 0.08);
}

.bar-shell span {
  display: block;
  width: var(--amount, 70%);
  height: 100%;
  border-radius: inherit;
  background: var(--coral);
  transition: width 300ms var(--ease-move);
}

.motivation-response {
  padding: 18px;
}

.motivation-response.good {
  border-left-color: var(--teal);
  background: var(--teal-soft);
}

.plan-panel {
  min-height: 480px;
}

pre {
  min-height: 340px;
  overflow: auto;
  margin: 16px 0 0;
  border-radius: var(--radius);
  background: #172226;
  color: #fff8ec;
  padding: 18px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.94rem;
  line-height: 1.62;
  white-space: pre-wrap;
}

.copy-status {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.closing-claim {
  display: grid;
  align-content: center;
  gap: 14px;
  background: #192326;
  color: var(--surface);
}

.closing-claim h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.9rem, 3.2vw, 3.25rem);
}

.closing-claim p:not(.eyebrow) {
  color: rgba(255, 252, 245, 0.78);
}

.final-chapter {
  padding-bottom: clamp(90px, 14vw, 150px);
}

@keyframes flashWeek {
  0% {
    transform: scale(0.96);
  }
  100% {
    transform: scale(1);
  }
}

@media (max-width: 1080px) {
  .hero,
  .experience-shell,
  .old-course-lab,
  .decision-lab,
  .alignment-studio,
  .class-builder,
  .feedback-lab,
  .opening-lab,
  .launch-board,
  .instructor-note,
  .memory-check {
    grid-template-columns: 1fr;
  }

  .experience-shell {
    width: min(860px, calc(100% - 32px));
  }

  .course-file {
    position: relative;
    top: auto;
    max-height: none;
  }

  .check-feedback {
    grid-column: auto;
  }

  .hero-art {
    min-height: 440px;
  }

  .folder {
    min-height: 440px;
  }
}

@media (max-width: 720px) {
  .topbar {
    grid-template-columns: 1fr;
    gap: 6px;
    width: calc(100% - 18px);
  }

  .topbar nav {
    justify-content: flex-start;
  }

  .brand span:last-child {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 28px;
  }

  h1 {
    font-size: clamp(3rem, 15vw, 4.6rem);
  }

  h2 {
    font-size: clamp(2rem, 10vw, 3.3rem);
  }

  .hero-art {
    min-height: 520px;
  }

  .folder {
    min-height: 520px;
  }

  .folder-page {
    width: calc(100% - 54px);
  }

  .page-a {
    left: 24px;
    top: 112px;
  }

  .page-b {
    right: 24px;
    top: 245px;
  }

  .learner-note {
    bottom: 24px;
    width: calc(100% - 44px);
  }

  .scene,
  .chapter {
    padding-inline: 16px;
  }

  .experience-shell {
    width: calc(100% - 24px);
  }

  .spine-list div {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .week-track,
  .slot-row {
    grid-template-columns: repeat(3, 1fr);
  }

  .wire-map {
    overflow-x: auto;
  }

  #wireSvg {
    min-width: 620px;
  }

  .sim-head,
  .panel-head {
    align-items: stretch;
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none;
    transition: none;
  }
}