:root {
  --ink: #1b1a17;
  --ink-soft: #302e29;
  --ivory: #eee6d4;
  --ivory-bright: #fff9e9;
  --paper: #d9cbaa;
  --paper-deep: #bdae8f;
  --vermilion: #df442b;
  --vermilion-dark: #a82b1f;
  --ash: #716d63;
  --line: rgba(27, 26, 23, 0.28);
  --light-line: rgba(238, 230, 212, 0.23);
  --display: Georgia, "Times New Roman", "Batang", serif;
  --utility: "Lucida Console", "Courier New", "Dotum", monospace;
  --body: Georgia, "Batang", "Times New Roman", serif;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--ivory);
  background:
    radial-gradient(circle at 73% 8%, rgba(223, 68, 43, 0.12), transparent 27rem),
    repeating-linear-gradient(0deg, transparent 0 27px, rgba(238, 230, 212, 0.032) 27px 28px),
    repeating-linear-gradient(90deg, transparent 0 27px, rgba(238, 230, 212, 0.025) 27px 28px),
    var(--ink);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.55;
  text-rendering: optimizeLegibility;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  content: "";
  opacity: 0.28;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.78' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.11'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

button:disabled {
  cursor: not-allowed;
  opacity: 0.43;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--vermilion);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  color: var(--ink);
  background: var(--ivory-bright);
  font-family: var(--utility);
  transform: translateY(-180%);
}

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

.truth-strip {
  position: sticky;
  top: 0;
  z-index: 18;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.65rem, 2vw, 2rem);
  min-height: 34px;
  padding: 0.35rem 1rem;
  color: var(--ivory-bright);
  background: var(--vermilion-dark);
  border-bottom: 1px solid rgba(255, 249, 233, 0.42);
  font-family: var(--utility);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-align: center;
}

.truth-strip span:last-child {
  opacity: 0.78;
}

.masthead {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(18rem, 1.15fr) minmax(16rem, 0.7fr);
  gap: clamp(1.5rem, 5vw, 6rem);
  min-height: 74vh;
  padding: clamp(5rem, 9vw, 9rem) clamp(1.25rem, 5vw, 6.5rem) 6rem;
  overflow: hidden;
}

.masthead::after {
  position: absolute;
  right: -9vw;
  bottom: -16rem;
  width: 52vw;
  height: 32rem;
  border: 1px solid var(--light-line);
  content: "";
  transform: rotate(-8deg);
}

.masthead__index,
.section-number {
  font-family: var(--utility);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
}

.masthead__index {
  align-self: start;
  padding-top: 0.75rem;
  color: var(--vermilion);
  border-top: 1px solid currentColor;
}

.eyebrow,
.stamp,
.synthetic-stamp,
.world-label {
  margin: 0 0 0.65rem;
  font-family: var(--utility);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.masthead h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4.2rem, 10.8vw, 10.5rem);
  font-weight: 400;
  letter-spacing: -0.075em;
  line-height: 0.78;
}

.masthead h1 span {
  display: block;
  padding-left: clamp(1.5rem, 6vw, 6rem);
  color: var(--vermilion);
  font-style: italic;
}

.declaration {
  max-width: 32rem;
  margin: 3.5rem 0 0;
  font-size: clamp(1.35rem, 2.6vw, 2.5rem);
  line-height: 1.18;
}

.paper-note,
.tracing-paper {
  position: relative;
  color: var(--ink);
  background:
    linear-gradient(rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.02)),
    var(--paper);
  box-shadow: var(--shadow);
}

.paper-note {
  align-self: center;
  padding: 2rem 2rem 2.3rem;
  transform: rotate(1.4deg);
}

.paper-note::before {
  position: absolute;
  top: -0.55rem;
  left: 38%;
  width: 5rem;
  height: 1.25rem;
  background: rgba(238, 230, 212, 0.55);
  content: "";
  transform: rotate(-4deg);
}

.paper-note .stamp {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  color: var(--vermilion-dark);
  border: 1px solid var(--vermilion-dark);
  transform: rotate(-2deg);
}

.small-copy {
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
}

.section-index {
  position: absolute;
  right: clamp(1.25rem, 4vw, 4.5rem);
  bottom: 2.2rem;
  left: clamp(1.25rem, 4vw, 4.5rem);
  z-index: 2;
  display: flex;
  justify-content: flex-end;
  gap: 1.25rem;
  font-family: var(--utility);
  font-size: 0.66rem;
}

.section-index a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.section-index a:hover {
  border-color: currentColor;
}

.lab-grid {
  display: grid;
  grid-template-columns: minmax(22rem, 0.75fr) minmax(0, 1.5fr);
  align-items: start;
  color: var(--ink);
  background: var(--ivory);
  border-top: 5px solid var(--vermilion);
}

.cut-sheet {
  position: relative;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent 31px, rgba(223, 68, 43, 0.16) 32px, transparent 33px),
    repeating-linear-gradient(0deg, transparent 0 31px, rgba(27, 26, 23, 0.055) 31px 32px),
    var(--ivory);
}

.scenario-sheet {
  position: sticky;
  top: 34px;
  z-index: 5;
  min-height: calc(100vh - 34px);
  padding: clamp(3rem, 5vw, 5rem) clamp(1.3rem, 3.5vw, 4rem) 4rem;
  border-right: 1px dashed var(--ash);
}

.section-number {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  color: var(--vermilion-dark);
}

.section-number--light {
  color: var(--vermilion);
}

h2,
h3,
p {
  overflow-wrap: anywhere;
}

h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.2rem, 4vw, 4rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.03;
}

.lead {
  margin: 1.3rem 0 2rem;
  font-size: 0.94rem;
}

fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

legend,
.seed-field > span,
.compare-control > label:first-child {
  display: block;
  margin-bottom: 0.65rem;
  font-family: var(--utility);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.preset-rail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--ink);
}

.preset-tab {
  min-width: 0;
  padding: 0.85rem 0.5rem;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-right: 1px solid var(--ink);
  text-align: left;
}

.preset-tab:last-child {
  border-right: 0;
}

.preset-tab span,
.preset-tab small {
  display: block;
}

.preset-tab span {
  font-size: 0.8rem;
  font-weight: 700;
}

.preset-tab small {
  margin-top: 0.2rem;
  font-family: var(--utility);
  font-size: 0.56rem;
}

.preset-tab.is-active {
  color: var(--ivory-bright);
  background: var(--ink);
}

.preset-note {
  min-height: 2.5rem;
  margin: 0;
  padding: 0.65rem 0;
  color: var(--ash);
  font-size: 0.75rem;
}

.dial-grid {
  display: grid;
  gap: 0.85rem;
  margin-top: 1.2rem;
}

.dial {
  display: block;
}

.dial__head,
.dial__scale,
.compare-dial > span,
.confidence-scale {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
}

.dial__head {
  margin-bottom: 0.3rem;
  font-size: 0.83rem;
}

output {
  color: var(--vermilion-dark);
  font-family: var(--utility);
  font-weight: 700;
}

input[type="range"] {
  width: 100%;
  height: 20px;
  margin: 0;
  appearance: none;
  background: transparent;
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 2px;
  background: var(--ink);
}

input[type="range"]::-webkit-slider-thumb {
  width: 16px;
  height: 16px;
  margin-top: -7px;
  appearance: none;
  background: var(--vermilion);
  border: 2px solid var(--ink);
  border-radius: 0;
  transform: rotate(45deg);
}

input[type="range"]::-moz-range-track {
  height: 2px;
  background: var(--ink);
}

input[type="range"]::-moz-range-thumb {
  width: 13px;
  height: 13px;
  background: var(--vermilion);
  border: 2px solid var(--ink);
  border-radius: 0;
  transform: rotate(45deg);
}

.dial__scale,
.confidence-scale {
  color: var(--ash);
  font-family: var(--utility);
  font-size: 0.55rem;
}

.seed-field {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.35rem 1rem;
  margin-top: 1.2rem;
}

.seed-field > span {
  margin: 0;
}

.seed-field input,
.feedback-fields select,
.feedback-fields textarea,
.compare-control select {
  width: 100%;
  color: var(--ink);
  background: rgba(255, 249, 233, 0.45);
  border: 1px solid var(--ink);
  border-radius: 0;
}

.seed-field input {
  width: 10rem;
  padding: 0.45rem 0.55rem;
  font-family: var(--utility);
  font-size: 0.72rem;
}

.seed-field small {
  grid-column: 1 / -1;
  color: var(--ash);
  font-size: 0.68rem;
}

.run-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  width: 100%;
  margin-top: 1.5rem;
  padding: 1rem;
  color: var(--ivory-bright);
  background: var(--vermilion-dark);
  border: 1px solid var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  text-align: left;
}

.run-button:hover {
  background: var(--ink);
}

.run-button__icon {
  font-size: 1.3rem;
}

.run-button strong,
.run-button small {
  display: block;
}

.run-button small {
  margin-top: 0.15rem;
  font-family: var(--utility);
  font-size: 0.58rem;
  opacity: 0.72;
}

.flow-sheet {
  position: relative;
  min-width: 0;
  min-height: 100vh;
  padding: clamp(3rem, 5vw, 5rem) clamp(1.3rem, 4vw, 5rem) 5rem;
  color: var(--ivory);
  background:
    linear-gradient(112deg, transparent 0 64%, rgba(223, 68, 43, 0.07) 64.1% 64.3%, transparent 64.4%),
    var(--ink-soft);
}

.flow-sheet__head,
.section-heading,
.decision-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
}

.synthetic-stamp {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  margin: 0;
  padding: 0.3rem 0.55rem;
  color: var(--vermilion);
  border: 1px solid currentColor;
  white-space: nowrap;
  transform: rotate(-1deg);
}

.flow-map-wrap {
  position: relative;
  width: 100%;
  max-inline-size: 100%;
  min-inline-size: 0;
  margin-top: 2.2rem;
  overflow: hidden;
  border: 1px solid var(--light-line);
  background: rgba(0, 0, 0, 0.12);
}

.flow-map {
  display: block;
  width: 100%;
  max-inline-size: 100%;
  min-inline-size: 0;
  height: auto;
  min-height: 290px;
}

.blueprint-lines {
  fill: none;
  stroke: rgba(238, 230, 212, 0.1);
  stroke-dasharray: 4 8;
}

.routes {
  fill: none;
  stroke: rgba(238, 230, 212, 0.44);
  stroke-width: 3;
  stroke-dasharray: 3 6;
}

.zone circle {
  fill: var(--ink-soft);
  stroke: var(--ivory);
  stroke-width: 1.5;
}

.zone text {
  fill: var(--ivory);
  font-family: var(--utility);
  font-size: 12px;
  text-anchor: middle;
}

.zone .zone-count {
  fill: var(--paper-deep);
  font-size: 10px;
}

.zone.is-watch circle {
  stroke: var(--vermilion);
  stroke-width: 3;
}

.zone.is-bottleneck circle {
  fill: rgba(168, 43, 31, 0.26);
  stroke: var(--vermilion);
  stroke-width: 5;
  animation: danger-pulse 1.4s ease-in-out infinite;
}

.visitor-dot {
  fill: var(--ivory-bright);
  opacity: 0.75;
}

.visitor-dot--active {
  fill: var(--vermilion);
}

.bottleneck-pin path {
  fill: var(--vermilion);
}

.bottleneck-pin text {
  fill: var(--vermilion);
  font-family: var(--utility);
  font-size: 9px;
  text-anchor: middle;
}

@keyframes danger-pulse {
  0%,
  100% {
    stroke-opacity: 0.46;
  }
  50% {
    stroke-opacity: 1;
  }
}

.idle-overlay {
  position: absolute;
  z-index: 3;
  top: 10.8rem;
  right: clamp(2rem, 6vw, 8rem);
  left: clamp(2rem, 6vw, 8rem);
  padding: 1.7rem 1rem;
  color: var(--ivory);
  background: rgba(27, 26, 23, 0.9);
  border: 1px solid var(--vermilion);
  text-align: center;
}

.idle-overlay__mark {
  margin: 0;
  color: var(--vermilion);
  font-size: 2rem;
}

.idle-overlay p {
  margin: 0.2rem;
}

.idle-overlay p:last-child {
  font-size: 0.8rem;
  opacity: 0.74;
}

.flow-caption {
  margin: 0.55rem 0 0;
  font-family: var(--utility);
  font-size: 0.59rem;
  opacity: 0.63;
}

.run-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 0.8fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.run-summary__alert,
.persona-mix {
  min-height: 6rem;
  padding: 1rem;
  border: 1px solid var(--light-line);
}

.run-summary__alert .eyebrow {
  color: var(--vermilion);
}

.run-summary__alert.is-clear .eyebrow {
  color: var(--paper-deep);
}

.run-summary__alert p:last-child {
  margin: 0;
  font-size: 1.05rem;
}

.persona-mix {
  display: grid;
  align-content: center;
  gap: 0.45rem;
}

.mix-row {
  display: grid;
  grid-template-columns: minmax(8rem, 1fr) 4rem;
  gap: 0.65rem;
  font-size: 0.72rem;
}

.mix-row span:last-child {
  color: var(--paper);
  font-family: var(--utility);
  text-align: right;
}

.mix-bar {
  grid-column: 1 / -1;
  height: 2px;
  margin-top: -0.35rem;
  background: rgba(238, 230, 212, 0.13);
}

.mix-bar i {
  display: block;
  height: 100%;
  background: var(--vermilion);
}

.kpi-ledger {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1.5rem;
  border-top: 1px solid var(--ivory);
  border-left: 1px solid var(--light-line);
}

.kpi-cell,
.ledger-placeholder {
  position: relative;
  min-height: 8.4rem;
  padding: 1rem;
  border-right: 1px solid var(--light-line);
  border-bottom: 1px solid var(--light-line);
}

.ledger-placeholder {
  grid-column: 1 / -1;
  min-height: 6rem;
  color: var(--paper-deep);
  font-family: var(--utility);
  font-size: 0.72rem;
}

.kpi-cell__index {
  display: block;
  color: var(--vermilion);
  font-family: var(--utility);
  font-size: 0.58rem;
}

.kpi-cell__value {
  display: block;
  margin: 0.7rem 0 0.3rem;
  font-family: var(--display);
  font-size: clamp(1.6rem, 3.2vw, 2.7rem);
  line-height: 1;
}

.kpi-cell__label,
.kpi-cell__truth {
  display: block;
}

.kpi-cell__label {
  font-size: 0.76rem;
}

.kpi-cell__truth {
  position: absolute;
  right: 0.65rem;
  bottom: 0.5rem;
  color: var(--paper-deep);
  font-family: var(--utility);
  font-size: 0.46rem;
}

.cause-note {
  max-width: 47rem;
  margin: 2rem 0 0 auto;
  padding: 1.5rem 1.7rem;
  color: var(--ink);
  background: var(--paper);
  box-shadow: 9px 9px 0 rgba(0, 0, 0, 0.23);
  transform: rotate(-0.5deg);
}

.cause-note h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 1.7rem;
}

.cause-note ul {
  margin: 0.7rem 0 0;
  padding-left: 1.2rem;
}

.cause-note li {
  margin: 0.35rem 0;
  font-size: 0.84rem;
}

.assumption-drawer {
  margin-top: 2.5rem;
  border-top: 1px solid var(--light-line);
  border-bottom: 1px solid var(--light-line);
}

.assumption-drawer summary {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  font-size: 0.9rem;
  list-style: none;
  cursor: pointer;
}

.assumption-drawer summary::-webkit-details-marker {
  display: none;
}

.assumption-drawer summary span {
  color: var(--paper-deep);
  font-family: var(--utility);
  font-size: 0.58rem;
}

.assumption-body {
  padding: 0.5rem 0 1.4rem;
  columns: 2;
  column-gap: 3rem;
  font-size: 0.78rem;
}

.assumption-body > * {
  break-inside: avoid;
}

.assumption-body ol {
  margin-top: 0.5rem;
  padding-left: 1.2rem;
}

.warning-copy {
  padding: 0.8rem;
  color: var(--ivory-bright);
  background: var(--vermilion-dark);
}

.formula-sheet {
  min-width: 0;
  max-inline-size: 100%;
  overflow-wrap: anywhere;
  padding: 1rem;
  border: 1px solid var(--light-line);
}

.formula-sheet h4 {
  margin: 0 0 0.75rem;
  color: var(--vermilion);
  font-family: var(--utility);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

.formula-sheet .formula-notation {
  margin: 0 0 0.9rem;
  padding: 0 0 0.75rem;
  color: var(--paper-deep);
  border-bottom: 1px dotted var(--light-line);
  font-family: var(--utility);
  font-size: 0.58rem;
}

.formula-sheet dl {
  display: grid;
  grid-template-columns: minmax(7rem, 0.35fr) minmax(0, 1.65fr);
  min-width: 0;
  max-inline-size: 100%;
  gap: 0.55rem 1rem;
  margin: 0;
}

.formula-sheet dt,
.formula-sheet dd {
  min-width: 0;
}

.formula-sheet dt {
  font-weight: 700;
}

.formula-sheet dd {
  margin: 0;
  color: var(--paper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.formula-sheet p {
  margin: 0.9rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px dotted var(--light-line);
  color: var(--paper-deep);
  font-family: var(--utility);
  font-size: 0.58rem;
}

.comparison-room {
  position: relative;
  padding: clamp(4.5rem, 8vw, 8rem) clamp(1.25rem, 5vw, 6.5rem);
  color: var(--ivory);
  background: var(--ink);
  overflow: hidden;
}

.section-heading {
  position: relative;
  align-items: center;
  max-width: 88rem;
  margin: 0 auto;
}

.section-heading .section-number,
.decision-heading .section-number {
  top: -2.5rem;
  right: auto;
  left: 0;
}

.section-heading > div {
  max-width: 51rem;
}

.section-heading p:last-child,
.decision-heading p:last-child {
  max-width: 45rem;
  margin-bottom: 0;
  color: var(--paper-deep);
}

.outline-button,
.compare-button,
.export-actions button {
  padding: 0.85rem 1rem;
  color: var(--ivory);
  background: transparent;
  border: 1px solid var(--ivory);
}

.outline-button:hover,
.compare-button:hover,
.export-actions button:hover {
  color: var(--ink);
  background: var(--ivory);
}

.compare-empty {
  display: grid;
  place-items: center;
  min-height: 18rem;
  max-width: 88rem;
  margin: 3rem auto 0;
  border: 1px dashed var(--light-line);
  text-align: center;
}

.compare-empty span {
  color: var(--vermilion);
  font-family: var(--display);
  font-size: clamp(3rem, 8vw, 7rem);
}

.compare-empty p {
  margin-top: -5rem;
  font-family: var(--utility);
  font-size: 0.68rem;
}

.compare-workspace {
  max-width: 88rem;
  margin: 3rem auto 0;
}

.compare-control {
  display: grid;
  grid-template-columns: minmax(10rem, 0.6fr) minmax(16rem, 1.4fr) auto;
  align-items: end;
  gap: 1rem;
  margin: 0 auto 2rem;
  padding: 1.2rem;
  transform: rotate(-0.25deg);
}

.compare-control > label:first-child {
  grid-column: 1;
  margin: 0;
}

.compare-control select {
  grid-column: 1;
  padding: 0.65rem;
}

.compare-dial {
  grid-column: 2;
  grid-row: 1 / span 2;
}

.compare-button {
  grid-column: 3;
  grid-row: 1 / span 2;
  align-self: stretch;
  color: var(--ivory-bright);
  background: var(--vermilion-dark);
  border-color: var(--ink);
}

.worlds {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 2rem minmax(0, 1fr);
  align-items: stretch;
}

.world-sheet {
  min-width: 0;
  padding: clamp(1.2rem, 3vw, 3rem);
  color: var(--ink);
  background:
    repeating-linear-gradient(0deg, transparent 0 36px, rgba(27, 26, 23, 0.06) 36px 37px),
    var(--ivory);
}

.world-sheet--a {
  transform: rotate(-0.3deg);
}

.world-sheet--b {
  background-color: var(--paper);
  transform: rotate(0.35deg);
}

.world-sheet h3 {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.5rem, 3vw, 2.6rem);
}

.world-sheet h3 span {
  color: var(--vermilion-dark);
  font-size: 3.2rem;
}

.world-change {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.25rem 1rem;
  margin: 1.2rem 0;
  padding: 0.8rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 0.78rem;
}

.world-change dt,
.world-change dd {
  margin: 0;
}

.world-change dd {
  font-family: var(--utility);
}

.world-kpi-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.6rem;
  padding: 0.55rem 0;
  border-bottom: 1px dotted var(--line);
  font-size: 0.76rem;
}

.world-kpi-row output {
  color: var(--ink);
}

.world-kpi-row i {
  grid-column: 1 / -1;
  font-family: var(--utility);
  font-size: 0.53rem;
  font-style: normal;
  text-align: right;
}

.world-kpi-row i.is-positive {
  color: #276346;
}

.world-kpi-row i.is-negative {
  color: var(--vermilion-dark);
}

.cut-line {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--paper-deep);
  border-left: 1px dashed currentColor;
  border-right: 1px dashed currentColor;
}

.cut-line span {
  padding: 0.45rem 0;
  background: var(--ink);
  font-family: var(--utility);
  font-size: 0.52rem;
  letter-spacing: 0.1em;
  writing-mode: vertical-rl;
}

.comparison-verdict {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 1.5rem;
  margin: 1.6rem 0 0;
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--vermilion);
}

.comparison-verdict p {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.35rem);
}

.audience-room {
  display: grid;
  grid-template-columns: minmax(18rem, 0.75fr) minmax(0, 1.25fr);
  gap: clamp(2rem, 6vw, 7rem);
  padding: clamp(4.5rem, 8vw, 8rem) clamp(1.25rem, 6vw, 8rem);
}

.audience-intro > p:last-of-type {
  max-width: 33rem;
}

.persona-switch {
  display: grid;
  gap: 0.5rem;
  margin-top: 2rem;
}

.persona-switch button {
  position: relative;
  padding: 0.8rem 1rem 0.8rem 2.2rem;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

.persona-switch button::before {
  position: absolute;
  top: 1.1rem;
  left: 0.5rem;
  width: 0.65rem;
  height: 0.65rem;
  border: 1px solid var(--ink);
  content: "";
  transform: rotate(45deg);
}

.persona-switch button.is-active::before {
  background: var(--vermilion);
}

.journey-preview {
  position: relative;
  align-self: center;
  min-height: 27rem;
  padding: clamp(1.5rem, 4vw, 3.2rem);
  color: var(--ivory);
  background: var(--ink-soft);
  box-shadow: var(--shadow);
  transform: rotate(0.55deg);
}

.journey-preview::before {
  position: absolute;
  top: -0.7rem;
  right: 18%;
  width: 7rem;
  height: 1.5rem;
  background: rgba(189, 174, 143, 0.72);
  content: "";
  transform: rotate(3deg);
}

.journey-empty {
  display: grid;
  min-height: 20rem;
  margin: 0;
  place-items: center;
  color: var(--paper-deep);
  font-family: var(--utility);
  font-size: 0.7rem;
  text-align: center;
}

.journey-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--light-line);
}

.journey-head h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 2rem;
}

.journey-head span {
  color: var(--vermilion);
  font-family: var(--utility);
  font-size: 0.7rem;
}

.journey-track {
  position: relative;
  margin: 1.6rem 0 1rem;
  padding-left: 2rem;
}

.journey-track::before {
  position: absolute;
  top: 0.75rem;
  bottom: 1rem;
  left: 0.36rem;
  border-left: 1px dashed var(--paper-deep);
  content: "";
}

.journey-stop {
  position: relative;
  margin-bottom: 1.25rem;
}

.journey-stop::before {
  position: absolute;
  top: 0.25rem;
  left: -2rem;
  width: 0.7rem;
  height: 0.7rem;
  background: var(--vermilion);
  border: 2px solid var(--ink-soft);
  outline: 1px solid var(--paper-deep);
  content: "";
  transform: rotate(45deg);
}

.journey-stop h4,
.journey-stop p {
  margin: 0;
}

.journey-stop h4 {
  font-size: 0.9rem;
}

.journey-stop h4 span {
  margin-left: 0.5rem;
  color: var(--paper-deep);
  font-family: var(--utility);
  font-size: 0.55rem;
}

.journey-stop p,
.journey-summary {
  color: var(--paper);
  font-size: 0.74rem;
}

.journey-summary {
  padding-top: 1rem;
  border-top: 1px solid var(--light-line);
}

.decision-room {
  position: relative;
  display: grid;
  grid-template-columns: minmax(18rem, 0.55fr) minmax(0, 1.45fr);
  gap: clamp(2rem, 7vw, 9rem);
  padding: clamp(5rem, 9vw, 9rem) clamp(1.25rem, 6vw, 8rem);
  color: var(--ivory);
  background:
    linear-gradient(107deg, rgba(223, 68, 43, 0.09), transparent 40%),
    var(--ink-soft);
  border-top: 5px solid var(--vermilion);
}

.decision-heading {
  position: sticky;
  top: 6rem;
  align-self: start;
}

.feedback-form {
  min-width: 0;
}

.direction-fieldset legend,
.field-title {
  margin-bottom: 0.8rem;
  font-size: 0.9rem;
}

.direction-fieldset legend span,
.field-title b {
  display: inline-grid;
  width: 1.55rem;
  height: 1.55rem;
  margin-right: 0.5rem;
  color: var(--ivory-bright);
  background: var(--vermilion-dark);
  font-family: var(--utility);
  font-size: 0.7rem;
  place-items: center;
}

.direction-fieldset {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.6rem;
}

.direction-fieldset legend {
  grid-column: 1 / -1;
}

.direction-fieldset label {
  position: relative;
  min-height: 7rem;
}

.direction-fieldset input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.direction-fieldset label > span {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  height: 100%;
  padding: 1rem;
  border: 1px solid var(--light-line);
}

.direction-fieldset small {
  margin-top: 0.4rem;
  color: var(--paper-deep);
  font-size: 0.7rem;
}

.direction-fieldset input:checked + span {
  color: var(--ink);
  background: var(--paper);
  border-color: var(--vermilion);
  box-shadow: inset 0 -5px 0 var(--vermilion);
}

.direction-fieldset input:checked + span small {
  color: var(--ink-soft);
}

.direction-fieldset input:focus-visible + span {
  outline: 3px solid var(--vermilion);
  outline-offset: 4px;
}

.feedback-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.3rem;
  margin-top: 2rem;
}

.feedback-fields > label {
  display: block;
  min-width: 0;
}

.field-title {
  display: flex;
  align-items: center;
}

.field-title output {
  margin-left: auto;
  color: var(--vermilion);
}

.feedback-fields select,
.feedback-fields textarea {
  display: block;
  padding: 0.8rem;
  color: var(--ivory);
  background: rgba(27, 26, 23, 0.28);
  border-color: var(--light-line);
  resize: vertical;
}

.feedback-fields select option {
  color: var(--ink);
}

.local-record-note {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  margin-top: 1.8rem;
  padding: 1rem;
  color: var(--ink);
  background: var(--paper);
  font-size: 0.76rem;
}

.local-record-note p {
  margin: 0;
}

.local-record-note span {
  color: var(--vermilion-dark);
  font-family: var(--utility);
  font-size: 0.58rem;
  text-align: right;
}

.export-actions {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
  margin-top: 1rem;
}

.export-actions button {
  min-height: 3.1rem;
  font-size: 0.72rem;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem clamp(1.25rem, 5vw, 6rem);
  color: var(--ink);
  background: var(--vermilion);
  font-family: var(--utility);
  font-size: 0.58rem;
}

footer p {
  margin: 0;
}

.toast {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 30;
  max-width: min(26rem, calc(100vw - 2.4rem));
  padding: 0.9rem 1rem;
  color: var(--ink);
  background: var(--ivory-bright);
  border-left: 5px solid var(--vermilion);
  box-shadow: var(--shadow);
  font-size: 0.78rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

[hidden] {
  display: none !important;
}

@media (max-width: 1040px) {
  .masthead {
    grid-template-columns: 0.35fr minmax(0, 1.5fr) minmax(15rem, 0.8fr);
    gap: 2rem;
  }

  .lab-grid {
    grid-template-columns: minmax(20rem, 0.8fr) minmax(0, 1.2fr);
  }

  .scenario-sheet {
    padding-right: 2rem;
    padding-left: 2rem;
  }

  .kpi-ledger {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .decision-room {
    grid-template-columns: 1fr;
  }

  .decision-heading {
    position: relative;
    top: auto;
  }
}

@media (max-width: 760px) {
  .truth-strip span:last-child {
    display: none;
  }

  .masthead {
    grid-template-columns: 2rem minmax(0, 1fr);
    min-height: auto;
    padding-top: 5rem;
  }

  .masthead__brief {
    grid-column: 2;
  }

  .section-index {
    display: none;
  }

  .lab-grid {
    grid-template-columns: 1fr;
  }

  .scenario-sheet {
    position: relative;
    top: auto;
    min-height: 0;
    border-right: 0;
    border-bottom: 1px dashed var(--ash);
  }

  .run-summary,
  .audience-room {
    grid-template-columns: 1fr;
  }

  .assumption-body {
    columns: 1;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .compare-control {
    grid-template-columns: 1fr;
  }

  .compare-control > label:first-child,
  .compare-control select,
  .compare-dial,
  .compare-button {
    grid-column: 1;
    grid-row: auto;
  }

  .worlds {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cut-line {
    height: 1.5rem;
    border-top: 1px dashed currentColor;
    border-bottom: 1px dashed currentColor;
    border-left: 0;
    border-right: 0;
  }

  .cut-line span {
    padding: 0 0.5rem;
    writing-mode: horizontal-tb;
  }

  .comparison-verdict {
    grid-template-columns: 1fr;
  }

  .direction-fieldset {
    grid-template-columns: 1fr;
  }

  .direction-fieldset label {
    min-height: 5.4rem;
  }

  .local-record-note {
    grid-template-columns: 1fr;
  }

  .local-record-note span {
    text-align: left;
  }

  .export-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  .truth-strip {
    min-height: 38px;
    padding-inline: 0.65rem;
    font-size: 0.58rem;
  }

  .masthead {
    display: block;
    padding: 4.5rem 1.1rem 3.5rem;
  }

  .masthead__index {
    width: 5rem;
    margin-bottom: 2rem;
  }

  .masthead h1 {
    font-size: clamp(4rem, 22vw, 5.4rem);
  }

  .masthead h1 span {
    padding-left: 1.2rem;
  }

  .declaration {
    margin-top: 2rem;
    font-size: 1.4rem;
  }

  .masthead__brief {
    margin: 3rem 0 0 1rem;
    padding: 1.35rem;
  }

  .scenario-sheet,
  .flow-sheet,
  .comparison-room,
  .audience-room,
  .decision-room {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .scenario-sheet,
  .flow-sheet {
    padding-top: 3.7rem;
  }

  h2 {
    font-size: 2.35rem;
  }

  .preset-rail {
    grid-template-columns: 1fr;
  }

  .preset-tab {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-right: 0;
    border-bottom: 1px solid var(--ink);
  }

  .preset-tab:last-child {
    border-bottom: 0;
  }

  .seed-field {
    grid-template-columns: 1fr;
  }

  .seed-field input {
    width: 100%;
  }

  .flow-sheet__head {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
  }

  .flow-map-wrap {
    margin-right: 0;
    margin-left: 0;
  }

  .flow-map {
    width: 100%;
    max-width: 100%;
    transform: none;
  }

  .idle-overlay {
    top: 12rem;
    right: 1.5rem;
    left: 1.5rem;
  }

  .kpi-ledger {
    grid-template-columns: 1fr 1fr;
  }

  .kpi-cell {
    min-height: 8.8rem;
    padding: 0.75rem;
  }

  .kpi-cell__value {
    font-size: 1.55rem;
  }

  .cause-note {
    padding: 1.2rem;
  }

  .compare-empty {
    min-height: 14rem;
  }

  .world-sheet {
    padding: 1.25rem;
  }

  .audience-room,
  .decision-room {
    gap: 3rem;
  }

  .journey-preview {
    min-height: 24rem;
    padding: 1.35rem;
  }

  .feedback-fields {
    grid-template-columns: 1fr;
  }

  footer {
    flex-direction: column;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media print {
  .truth-strip,
  .masthead,
  .scenario-sheet,
  .export-actions,
  footer {
    display: none;
  }

  body,
  .flow-sheet,
  .comparison-room,
  .decision-room {
    color: #000;
    background: #fff;
  }
}