.foundation-page {
  color-scheme: dark;
  /* Keep the canvas in place when a lesson crosses the viewport height. */
  scrollbar-gutter: stable;
  background: #080e18;
  color: #edf2f4;
  --accent: #78e1d5;
}
.foundation {
  --f-ink: #edf2f4;
  --f-muted: #94a8b9;
  --f-rule: #b9d8eb1a;
  --f-maker: #e8bd7d;
  --f-buy: #78e1d5;
  --f-sell: #f29a89;
  min-height: 100dvh;
  font-family:
    "Space Grotesk", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  line-height: 1.6;
  background: #080e18;
  color: var(--f-ink);
}
.foundation button,
.foundation a {
  -webkit-tap-highlight-color: transparent;
}
.foundation button:focus-visible,
.foundation a:focus-visible,
.foundation summary:focus-visible {
  outline: 3px solid #78e1d5;
  outline-offset: 4px;
}
.foundation button:disabled {
  opacity: 0.48;
}
.foundation button {
  min-height: 44px;
}
.foundation a:hover {
  color: #78e1d5;
}
.f-kicker > span {
  color: var(--f-muted);
  margin-left: 8px;
}
.f-route-button {
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid var(--f-rule);
  border-radius: 8px;
  padding: 8px 13px;
  font-size: 12px;
}
.f-route-button:hover {
  background: #122232;
}
#f-completed-count {
  color: var(--f-muted);
  font-variant-numeric: tabular-nums;
}
.foundation .f-next {
  display: inline-flex;
  align-items: center;
  gap: 30px;
  padding: 13px 18px;
  background: #78e1d5;
  color: #080e18;
  font-size: 13px;
  font-weight: 650;
  border-radius: 8px;
  margin-top: 20px;
}
.f-next:hover {
  background: #a3eadf;
}
.f-trade-path #f-takeaway {
  font-size: 15px;
  color: var(--f-ink);
  line-height: 1.9;
  margin: 12px 0;
}
.f-trade-path ol:empty {
  display: none;
}
.f-reflection {
  display: grid;
  gap: 12px;
  min-width: 0;
  padding: 20px 25px;
  border-top: 1px solid var(--f-rule);
}
.f-prediction {
  border: 0;
  padding: 0;
  margin: 7px 0 0;
  min-width: 0;
  display: grid;
  gap: 9px;
}
.f-prediction legend {
  color: var(--f-maker);
  font-size: 13px;
  margin-bottom: 12px;
}
.f-prediction button {
  border: 1px solid var(--f-rule);
  border-radius: 8px;
  padding: 12px 15px;
  font-size: 13px;
  line-height: 1.7;
  text-align: left;
  background: #0c1521;
  color: var(--f-ink);
}
.f-prediction button[aria-pressed="true"] {
  border-color: var(--f-buy);
  background: #78e1d511;
}
#f-prediction-status {
  font-size: 12px;
  color: var(--f-muted);
}
.foundation[data-phase="complete"] #f-camera-label {
  color: var(--f-buy);
}
.f-recap {
  scroll-margin-top: 24px;
}
.f-reflection label {
  display: grid;
  gap: 5px;
  font-size: 12px;
  color: var(--f-ink);
}
.f-reflection textarea {
  width: 100%;
  border: 1px solid #344656;
  background: #080e18;
  border-radius: 7px;
  padding: 9px;
  color: var(--f-ink);
  font-size: 12px;
  resize: vertical;
}
.f-reflection textarea::placeholder {
  color: #8495a5;
}
.f-reflection small {
  color: var(--f-muted);
  font-size: 11px;
}
#f-reflection-review {
  border-top: 1px solid var(--f-rule);
  margin-top: 16px;
  padding-top: 16px;
  overflow-wrap: anywhere;
}
#f-reflection-review strong {
  color: var(--f-maker);
  font-size: 12px;
}
#f-reflection-review p {
  font-size: 13px;
  margin: 5px 0 12px;
}
.f-map {
  width: min(800px, calc(100% - 32px));
  max-width: 800px;
  max-height: calc(100dvh - 48px);
  margin: auto;
  padding: 30px;
  border: 1px solid #2e4455;
  border-radius: 18px;
  background: #0c1623;
  color: var(--f-ink);
  box-shadow: 0 30px 100px #0008;
  scrollbar-gutter: stable;
}
.f-map::backdrop {
  background: #02060dcc;
  backdrop-filter: blur(6px);
}
.f-map-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: center;
}
.f-map-head h2 {
  font-size: 26px;
  font-weight: 600;
  margin: 0;
}
.f-map li {
  margin: 0;
  color: inherit;
  line-height: 1.6;
}
.f-map-head button {
  width: 44px;
  border-radius: 50%;
  border: 1px solid var(--f-rule);
}
.f-map-copy {
  color: var(--f-muted);
  font-size: 13px;
  margin: 12px 0 22px;
}
.f-map-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px 28px;
}
.f-map-grid h3 {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 10px;
}
.f-map-grid h3 > span {
  color: var(--f-maker);
  margin-right: 10px;
  font-size: 11px;
}
.f-map-grid ol {
  list-style: none;
  padding: 0;
  margin: 0;
}
.f-map-grid li {
  position: relative;
}
.f-uncomplete {
  position: absolute;
  right: 0;
  top: 0;
  width: 44px;
  height: 44px;
  color: var(--f-buy);
  border-radius: 6px;
}
.f-uncomplete:hover {
  background: #25434a;
}
.f-map-grid a {
  display: grid;
  grid-template-columns: 24px 1fr 30px;
  gap: 8px;
  align-items: center;
  padding: 12px 8px;
  border-radius: 6px;
  font-size: 13px;
}
.f-map-grid a:hover {
  background: #122232;
}
.f-map-grid a[aria-current] {
  background: #162f33;
  color: var(--f-buy);
}
.f-course-num {
  font-size: 11px;
  color: var(--f-muted);
}
.f-course-status {
  text-align: right;
  font-size: 11px;
  color: var(--f-buy);
}
.f-map-lab {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  border-top: 1px solid var(--f-rule);
  margin-top: 25px;
  padding-top: 20px;
  font-size: 12px;
}
.f-map-lab > div {
  flex-basis: 100%;
}
.f-map-lab strong {
  font-size: 13px;
  font-weight: 500;
}
.f-map-lab p {
  margin-top: 4px;
  color: var(--f-muted);
}
.f-map-lab a {
  color: var(--f-buy);
  min-height: 44px;
  display: flex;
  align-items: center;
}
.foundation svg .g-label,
.foundation svg .g-buy,
.foundation svg .g-sell,
.foundation svg .g-gold {
  font-size: 20px;
}
.foundation svg .g-heading {
  font-size: 21px;
  font-weight: 500;
}
.foundation svg .g-small {
  font-size: 17px;
  fill: var(--f-muted);
}
.foundation svg text.g-axis {
  font-size: 17px;
  fill: var(--f-muted);
}
.foundation svg .g-order-label {
  font-size: 18px;
  fill: var(--f-maker);
}
.foundation svg .g-value {
  font-size: 27px;
  font-variant-numeric: tabular-nums;
}
.foundation svg .g-number {
  font-size: 35px;
  font-weight: 550;
  font-variant-numeric: tabular-nums;
}
.foundation svg .g-equation {
  font-size: 26px;
  font-variant-numeric: tabular-nums;
}
.foundation svg .g-buy {
  fill: var(--f-buy);
}
.foundation svg .g-sell {
  fill: var(--f-sell);
}
.foundation svg .g-gold {
  fill: var(--f-maker);
}
.g-buy-bar {
  fill: #78e1d580;
}
.g-sell-bar {
  fill: #f29a8980;
}
.g-gold-bar {
  fill: var(--f-maker);
}
.foundation svg .g-payment {
  fill: #080e18;
  font-size: 18px;
  font-weight: 650;
}
.g-sell-key {
  background: var(--f-sell);
  border-radius: 50%;
}
.g-order-bg {
  fill: #32271e;
  stroke: #e8bd7d44;
}
.g-depth {
  fill: #e8bd7d22;
}
.g-flow-axis {
  fill: none;
  stroke: #94a8b944;
  stroke-width: 1;
}
.g-flow-line {
  fill: none;
  stroke: var(--f-buy);
  stroke-width: 3;
  stroke-linecap: round;
}
.foundation svg .g-flow-total {
  font-size: 28px;
  fill: var(--f-buy);
  font-variant-numeric: tabular-nums;
}
.g-position-card {
  fill: #142232;
  stroke: #304557;
}
.g-position-triggered .g-position-card,
.g-position-liquidating .g-position-card {
  fill: #2b1d21;
  stroke: var(--f-sell);
}
.g-position-closed .g-position-card {
  fill: #102822;
  stroke: #78e1d566;
}
.foundation svg .g-position-state {
  font-size: 18px;
  fill: var(--f-muted);
}
.foundation svg .g-position-triggered .g-position-state,
.foundation svg .g-position-liquidating .g-position-state {
  fill: var(--f-sell);
}
.foundation svg .g-position-closed .g-position-state {
  fill: var(--f-buy);
}
.foundation[data-course="liquidation"] svg .g-small {
  font-size: 17px;
}
.foundation svg .g-cascade text {
  font-size: 16px;
}
.g-panel,
.g-foot-row {
  fill: #142232;
  stroke: #304557;
}
.g-hidden-panel {
  fill: #1f2331;
  stroke: #e8bd7d77;
  stroke-dasharray: 5 5;
}
.g-diagonal,
.g-average-line {
  stroke: var(--f-maker);
  stroke-width: 2;
  stroke-dasharray: 5 5;
  fill: none;
}
.g-heat-cell {
  fill: var(--f-maker);
}
.g-rule,
.g-link {
  stroke: #436070;
  stroke-width: 2;
}
.g-long-panel {
  fill: #153334;
  stroke: #78e1d544;
}
.g-short-panel {
  fill: #352725;
  stroke: #f29a8944;
}
.g-traveler rect {
  fill: var(--f-buy);
  stroke: #080e18;
  stroke-width: 2;
}
.g-traveler-sell rect {
  fill: var(--f-sell);
}
.foundation .g-traveler text {
  fill: #080e18;
  font-weight: 650;
}
@media (max-width: 700px) {
  .f-route-button {
    gap: 8px;
    padding: 7px 9px;
    font-size: 11px;
  }
  .f-brand > span:last-child {
    display: none;
  }
  .f-map {
    padding: 20px;
  }
  .f-map-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .f-map-head h2 {
    font-size: 22px;
  }
  .f-map-grid a {
    padding: 13px 8px;
  }
  .foundation svg .g-small {
    font-size: 20px;
  }
  .foundation svg .g-heading {
    font-size: 22px;
  }
  .foundation svg text.g-axis,
  .foundation svg .g-order-label {
    font-size: 20px;
  }
  .f-reflection textarea {
    font-size: 16px;
  }
}
.f-skip {
  position: fixed;
  top: -100px;
  left: 20px;
  z-index: 10;
  padding: 12px;
  background: #122232;
}
.f-skip:focus {
  top: 12px;
}
.f-header {
  max-width: 1280px;
  margin: auto;
  padding: 25px 48px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.f-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.f-brand b {
  font-size: 19px;
  font-weight: 750;
  letter-spacing: -0.7px;
}
.f-brand > span:last-child {
  padding-left: 13px;
  margin-left: 5px;
  border-left: 1px solid #b9d8eb1a;
  font-size: 13px;
  color: var(--f-muted);
}
.f-mark {
  display: block;
  position: relative;
  flex: 0 0 38px;
  width: 38px;
  height: 38px;
  overflow: hidden;
  border-radius: 50%;
  border: 1px solid #bb944b;
  background: #161616;
}
.f-mark > img {
  position: absolute;
  width: 202%;
  height: 202%;
  max-width: none;
  left: -51%;
  top: -33%;
  mask: url('/brand-mask.svg') center / 100% 100% no-repeat;
}
.f-chapter-label {
  font-size: 12px;
  color: var(--f-muted);
}
.f-main {
  max-width: 1184px;
  padding: 30px 0 0;
  margin: 0 auto;
}
.f-intro {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  margin: 0 0 30px;
}
.f-kicker {
  font-size: 13px;
  margin-bottom: 9px;
  color: #94a8b9;
}
.foundation h1 {
  font-size: clamp(27px, 3vw, 38px);
  line-height: 1.4;
  letter-spacing: -0.8px;
  font-weight: 650;
}
.f-deck {
  color: var(--f-muted);
  font-size: 14px;
  margin-top: 11px;
}
.f-progress {
  display: flex;
  list-style: none;
  gap: 19px;
  padding: 0 0 5px;
  margin: 0;
  flex-shrink: 0;
}
.f-progress li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  color: #94a8b9;
  font-size: 11px;
  position: relative;
}
.f-progress li + li::before {
  content: "";
  position: absolute;
  width: 29px;
  height: 1px;
  background: #b9d8eb1a;
  right: calc(50% + 19px);
  top: 13px;
}
.f-progress li > span {
  background: #122232;
  border: 1px solid #b9d8eb1a;
  width: 27px;
  height: 27px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-size: 11px;
}
.f-progress li[aria-current] {
  color: #78e1d5;
  font-weight: 700;
}
.f-progress li[aria-current] > span {
  background: #78e1d5;
  color: #080e18;
  border-color: #78e1d5;
}
.f-progress li.f-done > span {
  background: #1b3536;
  border-color: #254b51;
  color: #78e1d5;
}
.f-theater {
  background: #0c1623;
  border: 1px solid #b9d8eb1a;
  border-radius: 18px;
  box-shadow: 0 12px 36px #0003;
  overflow: hidden;
}
.f-stage-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 28px;
  border-bottom: 1px solid var(--f-rule);
  gap: 12px;
}
.f-market-label {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  font-weight: 600;
}
.f-market-label > span:last-child {
  color: var(--f-muted);
  font-weight: 400;
  font-size: 11px;
  margin-left: 9px;
}
.f-dot {
  width: 6px;
  height: 6px;
  background: #587889;
  border-radius: 50%;
  flex-shrink: 0;
}
.f-text-button {
  font-size: 12px;
  color: #94a8b9;
  padding: 8px 0 8px 10px;
  white-space: nowrap;
}
.f-text-button:hover {
  color: #edf2f4;
  text-decoration: underline;
}
.f-scene {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  min-height: 374px;
}
.f-book-panel {
  min-width: 0;
  padding: 16px 24px 12px;
  position: relative;
}
.f-book-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--f-muted);
  min-height: 25px;
}
.f-view-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.f-pause-slot {
  /* Hidden controls must not change the heading or page height. */
  display: grid;
  align-items: center;
  width: 68px;
  height: 44px;
}
.f-pause-slot .f-text-button {
  padding: 0;
  min-height: 44px;
}
.f-zoom-badge {
  border: 1px solid var(--f-rule);
  border-radius: 5px;
  font-variant-numeric: tabular-nums;
  padding: 0 6px;
  font-size: 10px;
  width: 3.5em;
  text-align: center;
}
.foundation #f-book {
  display: block;
  width: 100%;
  height: 318px;
  overflow: hidden;
}
.foundation svg text {
  font-family:
    "Space Grotesk", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  fill: var(--f-ink);
  font-size: 12px;
}
.f-price-row line {
  stroke: #151e2a;
  stroke-width: 1;
}
.foundation .f-price-row text {
  fill: #94a8b9;
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.f-last-price-line {
  stroke: #587889;
  stroke-width: 1;
  stroke-dasharray: 4 5;
}
.f-maker-order rect {
  fill: #32271e;
  stroke: #e8bd7d55;
  stroke-width: 1;
}
.f-maker-order circle {
  fill: #54422b;
}
.f-filled-order rect {
  fill: #1d2025;
  stroke-dasharray: 4 3;
}
.foundation .f-filled-order text {
  fill: #b79a70;
}
.foundation .f-maker-order text {
  fill: #e8bd7d;
  font-size: 12px;
}
.foundation .f-maker-order .f-maker-letter {
  font-size: 10px;
  font-weight: 700;
}
.foundation .f-maker-order .f-order-qty {
  font-size: 12px;
  font-weight: 650;
}
.f-gap path {
  fill: none;
  stroke: #b9d8eb1a;
  stroke-width: 1.2;
  stroke-dasharray: 3 3;
}
.foundation .f-gap text {
  fill: #94a8b9;
  font-size: 13px;
}
.foundation .f-gap .f-gap-small {
  fill: #94a8b9;
  font-size: 11px;
}
.f-fill-marker circle {
  fill: #78e1d5;
  stroke: #0c1623;
  stroke-width: 2;
}
.foundation .f-fill-marker text {
  fill: #78e1d5;
  font-size: 11px;
}
.foundation[data-step="5"] .f-fill-marker circle,
.foundation[data-step="6"] .f-fill-marker circle {
  fill: #f29a89;
}
.foundation[data-step="5"] .f-fill-marker text,
.foundation[data-step="6"] .f-fill-marker text {
  fill: #f29a89;
}
.f-taker-order rect {
  fill: #78e1d5;
  stroke: #0c1623;
  stroke-width: 2;
}
.f-taker-order circle {
  fill: #fff3;
}
.foundation .f-taker-order text {
  fill: #080e18;
  font-weight: 600;
  font-size: 12px;
}
.f-taker-order.f-selling rect {
  fill: #f29a89;
}
.f-book-key {
  display: flex;
  justify-content: center;
  gap: 25px;
  color: var(--f-muted);
  font-size: 11px;
}
.f-book-key span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.f-book-key i {
  width: 8px;
  height: 8px;
  display: inline-block;
}
.f-maker-key {
  background: #54422b;
  border: 1px solid #e8bd7d;
  border-radius: 2px;
}
.f-taker-key {
  background: #78e1d5;
  border-radius: 50%;
}
.f-book-key .f-candle-key {
  width: 13px;
  height: 3px;
  border-radius: 2px;
  background: #587889;
}
.f-candle-flat {
  stroke: #587889;
  stroke-width: 3;
  stroke-linecap: round;
}
.f-candle-shape line {
  stroke: #78e1d5;
  stroke-width: 2;
}
.f-candle-shape rect {
  fill: #78e1d5;
}
.f-candle-down line {
  stroke: #f29a89;
}
.f-candle-down rect {
  fill: #f29a89;
}
.foundation .f-candle-label {
  fill: #94a8b9;
  font-size: 12px;
}
.f-wick-bracket {
  stroke: #f29a89;
  fill: none;
  stroke-width: 1.2;
}
.foundation .f-wick-label {
  fill: #f29a89;
  font-size: 14px;
  font-weight: 700;
}
.f-scene-caption {
  min-height: 56px;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 10px 28px;
  border-top: 1px solid var(--f-rule);
  background: #0c1623;
}
.f-current-price {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  color: var(--f-muted);
  font-size: 11px;
  white-space: nowrap;
}
.f-current-price b {
  color: #edf2f4;
  font-size: 22px;
  line-height: 1;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  min-width: 38px;
}
.f-scene-caption > p {
  font-size: 12px;
  color: #94a8b9;
  flex: 1;
}
.f-story {
  display: flex;
  gap: 24px;
  padding: 23px 30px 20px;
  border-top: 1px solid var(--f-rule);
}
.f-step-count {
  font-size: 11px;
  color: #94a8b9;
  padding-top: 7px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.f-story h2 {
  font-size: 21px;
  line-height: 1.5;
  font-weight: 650;
  letter-spacing: -0.3px;
}
.f-story p {
  font-size: 14px;
  color: #b7c7d4;
  line-height: 1.85;
  margin-top: 7px;
  max-width: 790px;
}
.f-controls {
  display: flex;
  align-items: center;
  padding: 0 30px 26px;
  gap: 24px;
}
.f-back {
  color: #94a8b9;
  min-width: 55px;
  font-size: 12px;
  padding: 0;
  text-align: left;
}
.f-back:disabled {
  visibility: hidden;
}
.f-action-hint {
  display: flex;
  flex: 1;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}
.f-action-hint strong {
  font-size: 12px;
  color: #94a8b9;
  font-weight: 600;
}
.f-action-hint span {
  font-size: 11px;
  color: #94a8b9;
}
.f-action {
  background: #78e1d5;
  color: #080e18;
  border-radius: 9px;
  padding: 13px 25px;
  min-width: 227px;
  min-height: 49px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 3px 0 #0003;
}
.f-action:hover:not(:disabled) {
  background: #a3eadf;
}
.f-action.f-sell-action {
  background: #f29a89;
}
.f-action.f-sell-action:hover:not(:disabled) {
  background: #ffc3b5;
}
.f-action:disabled {
  opacity: 0.7;
}
.f-recap {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 30px;
  padding: 32px 0 20px;
}
.f-recap h2 {
  font-size: 21px;
  margin: 0 0 8px;
  font-weight: 600;
}
.f-recap-main > p {
  color: #94a8b9;
  font-size: 13px;
}
.f-answers {
  display: flex;
  gap: 10px;
  margin-top: 17px;
}
.f-answers button {
  border: 1px solid #b9d8eb1a;
  border-radius: 8px;
  padding: 11px 13px;
  background: #0c1623;
  font-size: 12px;
  text-align: left;
}
.f-answers button:hover {
  border-color: #254b51;
}
.f-answers .f-correct {
  border-color: #78e1d5;
  background: #1b3536;
  color: #78e1d5;
}
.f-answers .f-incorrect {
  border-color: #f29a89;
  background: #362421;
  color: #f29a89;
}
.f-recap-main .f-feedback {
  margin-top: 14px;
  font-size: 13px;
  color: #78e1d5;
}
.f-trade-path {
  border-left: 1px solid #b9d8eb1a;
  padding-left: 26px;
}
.f-trade-path > p {
  font-size: 12px;
  color: #b7c7d4;
}
.f-trade-path ol {
  list-style: none;
  display: flex;
  padding: 0;
  margin: 15px 0 12px;
  justify-content: space-between;
  gap: 10px;
}
.f-trade-path li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}
.f-trade-path li span {
  color: #94a8b9;
  font-size: 11px;
}
.f-trade-path li strong {
  color: #edf2f4;
  font-size: 23px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.f-trade-path li small {
  font-size: 10px;
  color: #94a8b9;
}
.f-trade-path > small {
  color: #94a8b9;
  font-size: 10px;
}
.f-footnotes {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  margin: 19px 0 0;
  color: #94a8b9;
  font-size: 11px;
}
.f-footnotes details {
  max-width: 740px;
  flex: 1;
}
.f-footnotes summary {
  color: #94a8b9;
  font-size: 12px;
  line-height: 1.8;
  padding: 5px 0;
  cursor: pointer;
}
.f-footnotes details p {
  color: #94a8b9;
  font-size: 12px;
  line-height: 1.9;
  margin: 10px 0;
}
.f-footnotes details a {
  text-decoration: underline;
}
.f-footnotes > span {
  padding-top: 5px;
  white-space: nowrap;
}
.foundation .f-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 25px 0;
  margin: 20px 0 0;
  border-top: 1px solid #b9d8eb1a;
  color: #94a8b9;
  font-size: 11px;
  gap: 20px;
}
.foundation .f-footer > span:first-child {
  font-size: 11px;
  font-family: inherit;
  letter-spacing: 0;
  color: #94a8b9;
}
.f-footer a {
  text-decoration: underline;
  text-underline-offset: 4px;
}
@media (min-width: 1100px) {
  .f-header {
    padding-top: 18px;
    padding-bottom: 18px;
  }
  .f-main {
    padding-top: 17px;
  }
  .f-intro {
    margin-bottom: 24px;
  }
  .f-theater {
    display: grid;
    grid-template-columns: 282px minmax(0, 1fr);
  }
  .f-stage-top {
    grid-column: 1 / -1;
    grid-row: 1;
    padding-top: 3px;
    padding-bottom: 3px;
  }
  .f-story {
    grid-column: 1;
    grid-row: 2;
    flex-direction: column;
    gap: 14px;
    border-top: 0;
    padding: 26px 25px 14px;
  }
  .f-story h2 {
    font-size: 23px;
    line-height: 1.65;
  }
  .f-story p {
    font-size: 13px;
    margin-top: 12px;
  }
  .f-step-count {
    padding-top: 0;
  }
  .f-controls {
    grid-column: 1;
    grid-row: 3;
    display: grid;
    grid-template-columns: 1fr auto;
    align-content: end;
    gap: 16px 8px;
    padding: 12px 25px 25px;
  }
  .f-action-hint {
    grid-row: 1;
    grid-column: 1 / -1;
  }
  .f-action-hint span {
    font-size: 11px;
  }
  .f-back {
    grid-row: 2;
    grid-column: 1 / -1;
    min-height: 25px;
  }
  .f-action {
    grid-row: 3;
    grid-column: 1 / -1;
    min-width: 0;
    width: 100%;
    padding-left: 10px;
    padding-right: 10px;
    font-size: 13px;
  }
  .f-scene {
    grid-column: 2;
    grid-row: 2 / 4;
    border-left: 1px solid var(--f-rule);
    min-height: 420px;
  }
  .f-book-panel {
    padding-left: 10px;
    padding-right: 10px;
  }
  .foundation #f-book {
    height: 342px;
  }
  .f-scene-caption {
    grid-row: 4;
    grid-column: 1 / -1;
  }
  .f-reflection {
    grid-row: 4;
    grid-column: 1 / -1;
  }
  .f-theater:has(.f-reflection:not([hidden])) .f-scene-caption {
    grid-row: 5;
  }
  .f-theater:has(.f-reflection:not([hidden])) .f-controls {
    grid-row: 6;
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    padding-top: 20px;
  }
  .f-theater:has(.f-reflection:not([hidden])) .f-action {
    width: auto;
  }
  .f-prediction {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  #f-prediction-status {
    grid-column: 1 / -1;
  }
}
@media (max-width: 1280px) {
  .f-header {
    padding-left: 34px;
    padding-right: 34px;
  }
  .f-main {
    margin: 0 34px;
  }
}
@media (min-width: 1100px) and (max-height: 850px) {
  .f-header {
    padding-top: 14px;
    padding-bottom: 14px;
  }
  .f-main {
    padding-top: 12px;
  }
  .f-kicker {
    display: none;
  }
  .foundation h1 {
    font-size: 32px;
  }
  .f-deck {
    margin-top: 6px;
  }
  .f-intro {
    margin-bottom: 20px;
  }
}
@media (max-width: 960px) {
  .f-main {
    padding-top: 18px;
  }
  .f-intro {
    align-items: start;
    gap: 25px;
  }
  .f-progress {
    gap: 11px;
    padding-top: 10px;
  }
  .f-progress li {
    font-size: 10px;
  }
  .f-progress li + li::before {
    width: 17px;
  }
  .f-book-panel {
    padding-left: 12px;
    padding-right: 12px;
  }
  .f-story {
    padding-left: 24px;
    padding-right: 24px;
    gap: 18px;
  }
  .f-controls {
    padding-left: 24px;
    padding-right: 24px;
    gap: 18px;
  }
  .f-action {
    min-width: 205px;
    padding-left: 18px;
    padding-right: 18px;
  }
  .f-action-hint span {
    max-width: 220px;
  }
  .f-recap {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .f-trade-path {
    border-left: 0;
    border-top: 1px solid #b9d8eb1a;
    padding: 20px 0 0;
  }
  .f-trade-path ol {
    max-width: 370px;
  }
}
@media (max-width: 700px) {
  .f-header {
    padding: 19px 20px;
  }
  .f-brand {
    gap: 8px;
  }
  .f-brand b {
    font-size: 17px;
  }
  .f-brand > span:last-child {
    font-size: 11px;
    padding-left: 9px;
    margin-left: 2px;
  }
  .f-chapter-label {
    display: none;
  }
  .f-main {
    margin: 0 16px;
    padding-top: 16px;
  }
  .f-intro {
    flex-direction: column;
    gap: 23px;
    margin-bottom: 23px;
  }
  .f-kicker {
    font-size: 11px;
    margin-bottom: 7px;
  }
  .foundation h1 {
    font-size: 27px;
    letter-spacing: -0.6px;
  }
  .f-deck {
    font-size: 12px;
    line-height: 1.8;
    margin-top: 8px;
  }
  .f-progress {
    align-self: stretch;
    justify-content: space-between;
    padding: 0 7px;
  }
  .f-progress li {
    flex-direction: row;
    gap: 5px;
    font-size: 10px;
  }
  .f-progress li > span {
    width: 21px;
    height: 21px;
    font-size: 10px;
  }
  .f-progress li + li::before {
    display: none;
  }
  .f-theater {
    border-radius: 13px;
  }
  .f-stage-top {
    padding: 6px 15px;
    gap: 5px;
  }
  .f-market-label {
    font-size: 11px;
    gap: 6px;
    flex-wrap: wrap;
  }
  .f-market-label > span:last-child {
    font-size: 9px;
    margin-left: 0;
    width: 100%;
    padding-left: 12px;
  }
  .f-text-button {
    font-size: 11px;
  }
  .f-scene {
    min-height: 0;
  }
  .f-book-panel {
    padding: 10px 8px 12px;
  }
  .f-book-heading {
    padding: 0 7px;
    font-size: 10px;
  }
  .foundation #f-book {
    height: auto;
    aspect-ratio: 640 / 390;
  }
  .f-book-key {
    gap: 15px;
    font-size: 10px;
    margin-top: 4px;
  }
  .f-scene-caption {
    padding: 12px 15px;
    gap: 12px;
    align-items: start;
    flex-wrap: wrap;
  }
  .f-current-price {
    font-size: 10px;
    gap: 7px;
    align-items: center;
  }
  .f-current-price b {
    font-size: 20px;
    min-width: 33px;
  }
  .f-scene-caption > p {
    font-size: 11px;
    flex-basis: calc(100% - 120px);
    min-height: 3.2em;
  }
  .f-story {
    gap: 10px;
    padding: 19px 17px 15px;
    flex-direction: column;
  }
  .f-step-count {
    padding-top: 0;
    font-size: 10px;
  }
  .f-story h2 {
    font-size: 19px;
  }
  .f-story p {
    font-size: 13px;
    line-height: 1.85;
    margin-top: 7px;
  }
  .f-controls {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 13px 15px;
    padding: 3px 17px 20px;
  }
  .f-action-hint {
    grid-row: 1;
    grid-column: 1;
  }
  .f-action-hint span {
    max-width: none;
    font-size: 10px;
  }
  .f-action-hint strong {
    font-size: 11px;
  }
  .f-back {
    grid-column: 2;
    grid-row: 1;
    min-width: 62px;
    white-space: nowrap;
    text-align: right;
    font-size: 11px;
  }
  .f-action {
    grid-column: 1 / -1;
    font-size: 13px;
    min-height: 48px;
  }
  .f-recap {
    padding-top: 26px;
  }
  .f-recap h2 {
    font-size: 19px;
  }
  .f-answers {
    flex-direction: column;
  }
  .f-answers button {
    padding: 13px;
    font-size: 12px;
  }
  .f-footnotes {
    flex-direction: column;
    gap: 10px;
    margin-top: 14px;
  }
  .f-footnotes > span {
    font-size: 10px;
  }
  .foundation .f-footer {
    flex-wrap: wrap;
    font-size: 10px;
    margin-top: 19px;
    padding: 22px 0;
    gap: 10px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .foundation *,
  .foundation *::before,
  .foundation *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}
@media (max-width: 999px) {
  .foundation .f-price-row text {
    font-size: 21px;
  }
  .foundation .f-maker-order text,
  .foundation .f-maker-order .f-order-qty,
  .foundation .f-taker-order text,
  .foundation .f-fill-marker text {
    font-size: 20px;
  }
  .foundation .f-maker-order .f-maker-letter {
    font-size: 16px;
  }
  .foundation .f-gap text {
    font-size: 22px;
  }
  .foundation .f-gap .f-gap-small {
    font-size: 18px;
  }
  .foundation .f-candle-label,
  .foundation .f-wick-label {
    font-size: 20px;
  }
}