@font-face {
  font-family: "Mozilla Headline Fallback";
  src: local("Arial");
  size-adjust: 96%;
  ascent-override: 94%;
  descent-override: 24%;
  line-gap-override: 0%;
}

@font-face {
  font-family: "Mozilla Text Fallback";
  src: local("Arial");
  size-adjust: 101%;
  ascent-override: 92%;
  descent-override: 24%;
  line-gap-override: 0%;
}

:root {
  color-scheme: light;
  --paper: oklch(96.4% 0.019 82);
  --paper-raised: oklch(98.7% 0.01 82);
  --paper-deep: oklch(92.8% 0.025 82);
  --ink: oklch(20.5% 0.016 95);
  --ink-soft: oklch(42% 0.019 95);
  --ink-faint: oklch(52% 0.018 95);
  --line: oklch(83.5% 0.026 84);
  --line-strong: oklch(69% 0.035 83);
  --coral: oklch(64.5% 0.196 34);
  --coral-deep: oklch(49% 0.174 33);
  --coral-pale: oklch(91.5% 0.055 38);
  --green: oklch(51% 0.105 151);
  --green-deep: oklch(38% 0.084 151);
  --green-pale: oklch(91.5% 0.042 151);
  --gold: oklch(79% 0.15 82);
  --gold-deep: oklch(48% 0.12 76);
  --gold-pale: oklch(92.5% 0.07 83);
  --mint: oklch(76% 0.14 151);
  --fault: oklch(54% 0.18 26);
  --font-display: "Mozilla Headline", "Mozilla Headline Fallback", sans-serif;
  --font-body: "Mozilla Text", "Mozilla Text Fallback", sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-body: 1rem;
  --text-lead: clamp(1.125rem, 1.5vw, 1.35rem);
  --text-subhead: clamp(1.9rem, 4vw, 3.6rem);
  --text-hero: clamp(3.35rem, 8vw, 7.5rem);
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --content: 86rem;
  --header-height: 4.5rem;
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --shadow-sm: 0 0.5rem 1.5rem oklch(20.5% 0.016 95 / 0.07);
  --z-sticky: 200;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  min-width: 20rem;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 100% 8rem,
    var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-optical-sizing: auto;
  font-kerning: normal;
  line-height: 1.5;
  overflow-x: clip;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--green);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: var(--space-md);
  left: var(--space-md);
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--paper-raised);
  transform: translateY(-200%);
  transition: transform 150ms var(--ease-out-quart);
}

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

.site-header {
  position: fixed;
  z-index: var(--z-sticky);
  top: env(safe-area-inset-top);
  left: env(safe-area-inset-left);
  right: env(safe-area-inset-right);
  height: var(--header-height);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-md);
  padding: 0 var(--space-md);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  transition: transform 300ms var(--ease-out-quart);
}

.brand {
  display: inline-flex;
  width: max-content;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.035em;
  text-decoration: none;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  flex: none;
}

.brand-mark circle {
  fill: var(--coral);
}

.brand-mark path {
  fill: var(--paper);
}

.brand-domain {
  color: var(--ink-soft);
  font-weight: 400;
}

.site-nav,
.header-cta {
  display: none;
}

.deck-rail {
  --rail-index: 0;
  position: fixed;
  z-index: calc(var(--z-sticky) - 1);
  inset: auto var(--space-md) max(0.75rem, env(safe-area-inset-bottom)) var(--space-md);
  display: flex;
  justify-content: space-between;
  padding: 0.4rem;
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-sm);
}

.deck-rail a[data-tone="coral"] {
  --chapter-color: var(--coral);
  --chapter-text: var(--coral-deep);
}

.deck-rail a[data-tone="gold"] {
  --chapter-color: var(--gold);
  --chapter-text: var(--gold-deep);
}

.deck-rail a[data-tone="green"] {
  --chapter-color: oklch(67% 0.13 151);
  --chapter-text: var(--green-deep);
}

.deck-rail a[data-tone="mint"] {
  --chapter-color: var(--mint);
  --chapter-text: var(--green-deep);
}

.deck-rail a {
  position: relative;
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  place-content: center;
  color: var(--paper-deep);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  text-decoration: none;
  transition: color 220ms var(--ease-out-quart), opacity 220ms var(--ease-out-quart), transform 180ms var(--ease-out-quart);
}

.deck-rail a[aria-current="true"] {
  color: var(--chapter-color);
}

.deck-rail a > span {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  transition: color 240ms var(--ease-out-quart), background-color 240ms var(--ease-out-quart), transform 300ms var(--ease-out-quint);
}

.deck-rail a[aria-current="true"] > span {
  background: var(--chapter-color);
  color: var(--ink);
  transform: scale(1.05);
}

.deck-rail a:active {
  transform: scale(0.96);
}

.deck-rail b,
.rail-line,
.rail-cursor {
  display: none;
}

main {
  display: block;
}

.scene {
  position: relative;
  isolation: isolate;
  min-height: 100svh;
  padding: calc(var(--header-height) + var(--space-3xl)) var(--space-lg) 8rem;
}

.scene::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--line);
}

.scene > * {
  width: min(100%, var(--content));
  margin-inline: auto;
}

.act-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 var(--space-lg);
  color: var(--ink-soft);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.act-label span {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  background: var(--ink);
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

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

h1,
h2,
h3 {
  font-family: var(--font-display);
  font-weight: 600;
  text-wrap: balance;
}

h1 {
  max-width: 9ch;
  margin-bottom: var(--space-xl);
  font-size: var(--text-hero);
  letter-spacing: -0.042em;
  line-height: 0.93;
}

h2 {
  max-width: 13ch;
  margin-bottom: var(--space-xl);
  font-size: var(--text-subhead);
  letter-spacing: -0.036em;
  line-height: 0.99;
}

h3 {
  font-size: 1.6rem;
  letter-spacing: -0.024em;
  line-height: 1.04;
}

p {
  text-wrap: pretty;
}

.reveal {
  opacity: 1;
  transform: none;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.opening {
  display: grid;
  align-content: center;
  gap: var(--space-3xl);
  background: var(--paper);
  overflow: hidden;
}

.opening::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 18%;
  right: -22vw;
  width: 70vw;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
}

.opening-copy {
  position: relative;
  z-index: 2;
}

.opening-copy .act-label,
.opening-copy h1 span,
.opening-copy .hero-lede,
.opening-copy .hero-actions,
.opening-note {
  animation: hero-copy-enter 700ms var(--ease-out-quint) both;
}

.opening-copy .act-label { animation-delay: 40ms; }
.opening-copy h1 span { animation-delay: 100ms; }
.opening-copy h1 span:nth-child(2) { animation-delay: 155ms; }
.opening-copy h1 span:nth-child(3) { animation-delay: 210ms; }
.opening-copy h1 span:nth-child(4) { animation-delay: 265ms; }
.opening-copy .hero-lede { animation-delay: 335ms; }
.opening-copy .hero-actions { animation-delay: 405ms; }
.opening-note { animation-delay: 520ms; }

@keyframes hero-copy-enter {
  from { opacity: 0; transform: translateY(1rem); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-lede {
  max-width: 41rem;
  margin-bottom: var(--space-xl);
  color: var(--ink-soft);
  font-size: var(--text-lead);
  line-height: 1.45;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md) var(--space-lg);
}

.button {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  cursor: pointer;
  font-weight: 650;
  text-decoration: none;
  transition: color 150ms var(--ease-out-quart), background-color 150ms var(--ease-out-quart), transform 150ms var(--ease-out-quart), box-shadow 250ms var(--ease-out-quart);
}

.button-primary {
  background: var(--ink);
  color: var(--paper-raised);
}

.button-quiet {
  background: transparent;
  color: var(--ink);
}

.button:active {
  transform: scale(0.97);
}

.text-link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  font-weight: 650;
}

.market-machine {
  position: relative;
  display: grid;
  min-height: 29rem;
  grid-template-columns: 1fr 3.5rem 1fr;
  align-items: stretch;
  background: var(--paper-raised);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  animation: machine-enter 800ms var(--ease-out-quint) 180ms both;
}

@keyframes machine-enter {
  from { opacity: 0; transform: translateX(1.5rem) scale(0.985); }
  to { opacity: 1; transform: translateX(0) scale(1); }
}

.machine-side {
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  gap: var(--space-md);
  padding: var(--space-md);
}

.machine-label {
  color: var(--ink-faint);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.offer-stub,
.buyer-note {
  position: relative;
  display: grid;
  min-height: 5.5rem;
  align-content: center;
  gap: var(--space-xs);
  padding: var(--space-md);
  background: var(--paper-raised);
  border: 1px solid var(--line);
  box-shadow: 0 0.35rem 0.8rem oklch(20.5% 0.016 95 / 0.05);
  animation: ticket-enter-left 650ms var(--ease-out-quint) both;
  animation-delay: calc(180ms + var(--i, 0) * 90ms);
}

.machine-buyers .buyer-note {
  animation-name: ticket-enter-right;
}

@keyframes ticket-enter-left {
  from { opacity: 0; transform: translateX(-1.25rem); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes ticket-enter-right {
  from { opacity: 0; transform: translateX(1.25rem); }
  to { opacity: 1; transform: translateX(0); }
}

.offer-stub::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 0.25rem;
  background: var(--ticket, var(--coral));
}

.offer-stub b,
.buyer-note b {
  font-family: var(--font-display);
  font-size: 0.95rem;
  line-height: 1.1;
}

.offer-stub span,
.buyer-note small {
  color: var(--ink-soft);
  font-size: var(--text-xs);
}

.offer-coral { --ticket: var(--coral); }
.offer-green { --ticket: var(--green); }
.offer-gold { --ticket: var(--gold); }

.buyer-note {
  grid-template-columns: 2.25rem 1fr;
  grid-template-rows: auto auto;
}

.buyer-note .avatar {
  grid-row: 1 / 3;
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  place-items: center;
  align-self: center;
  background: var(--ink);
  color: var(--paper);
  border-radius: 50%;
  font-size: 0.65rem;
  font-weight: 700;
}

.machine-spine {
  z-index: 3;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-around;
  flex-direction: column;
  background: var(--coral);
  color: var(--paper-raised);
  overflow: hidden;
}

.machine-spine::before {
  content: "";
  position: absolute;
  top: -40%;
  width: 2px;
  height: 35%;
  background: var(--paper-raised);
  animation: spine-flow 2.8s linear infinite;
}

.machine-spine i {
  width: 0.55rem;
  height: 0.55rem;
  background: var(--paper-raised);
  border-radius: 50%;
  animation: spine-pulse 2.4s var(--ease-in-out) infinite;
}

.machine-spine i:nth-of-type(2) { animation-delay: 400ms; }
.machine-spine i:nth-of-type(3) { animation-delay: 800ms; }

.spine-word {
  position: absolute;
  left: 50%;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.18em;
  transform: translateX(-50%) rotate(-90deg);
}

@keyframes spine-flow {
  from { transform: translateY(0); }
  to { transform: translateY(400%); }
}

@keyframes spine-pulse {
  0%, 100% { opacity: 0.4; transform: scale(0.7); }
  45% { opacity: 1; transform: scale(1); }
}

.machine-routes {
  position: absolute;
  z-index: 1;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.machine-routes path {
  fill: none;
  stroke: var(--line-strong);
  stroke-dasharray: 2 10;
  stroke-linecap: round;
  animation: route-breathe 3.2s var(--ease-in-out) infinite;
}

.machine-routes path:nth-child(2) { animation-delay: 350ms; }
.machine-routes path:nth-child(3) { animation-delay: 700ms; }

@keyframes route-breathe {
  0%, 100% { opacity: 0.42; }
  50% { opacity: 1; }
}

.opening-note {
  color: var(--ink-faint);
  font-size: var(--text-sm);
}

.opportunity {
  background: var(--paper-raised);
}

.section-intro {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-4xl);
}

.section-intro > p:last-child,
.economics-copy > p,
.architecture-copy > p,
.ask-copy > p,
.proof-copy > p {
  max-width: 42rem;
  color: var(--ink-soft);
  font-size: var(--text-lead);
}

.market-evidence {
  display: grid;
  gap: var(--space-xl);
  padding-block: var(--space-2xl);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.evidence-number strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(5rem, 20vw, 12rem);
  font-weight: 250;
  letter-spacing: -0.09em;
  line-height: 0.78;
  font-variant-numeric: tabular-nums;
}

.evidence-number > span {
  display: block;
  margin-top: var(--space-lg);
  color: var(--coral-deep);
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 650;
}

.evidence-number p {
  max-width: 24rem;
  margin: var(--space-sm) 0 0;
  color: var(--ink-soft);
}

.evidence-rule {
  height: 1.2rem;
  background: var(--paper-deep);
  overflow: hidden;
}

.evidence-rule span {
  display: block;
  width: var(--share);
  height: 100%;
  background: var(--coral);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 900ms var(--ease-out-quint);
}

.market-evidence.is-visible .evidence-rule span {
  transform: scaleX(1);
}

.evidence-pair {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.evidence-pair div {
  display: grid;
  gap: var(--space-xs);
}

.evidence-pair strong {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 8vw, 4.5rem);
  font-weight: 450;
  letter-spacing: -0.06em;
  line-height: 1;
}

.evidence-pair span,
.source-note {
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.source-note {
  margin: 0;
}

.human-thesis {
  display: grid;
  gap: var(--space-3xl);
  margin-top: var(--space-4xl);
}

.pull-quote {
  max-width: 13ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 7vw, 5.5rem);
  font-weight: 300;
  letter-spacing: -0.036em;
  line-height: 1.01;
}

.thesis-points {
  display: grid;
}

.thesis-points p {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--line);
}

.thesis-points p:last-child {
  border-bottom: 1px solid var(--line);
}

.thesis-points span {
  color: var(--coral-deep);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.product-spine {
  background: var(--paper);
}

.sticky-copy {
  margin-bottom: var(--space-3xl);
}

.sticky-copy > p:not(.act-label) {
  max-width: 39rem;
  color: var(--ink-soft);
  font-size: var(--text-lead);
}

.sticky-copy .aside-copy {
  padding-top: var(--space-lg);
  border-top: 1px solid var(--line);
  font-size: var(--text-body);
}

.commerce-flow {
  position: relative;
  display: grid;
  gap: 0;
  margin-top: 0;
  padding: 0;
  list-style: none;
}

.commerce-flow::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 1.45rem;
  width: 1px;
  background: var(--coral);
}

.commerce-flow li {
  position: relative;
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: var(--space-md);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--line);
}

.commerce-flow li:last-child {
  border-bottom: 1px solid var(--line);
}

.flow-index {
  z-index: 1;
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  background: var(--paper);
  border: 1px solid var(--coral);
  color: var(--coral-deep);
  font-size: var(--text-xs);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.commerce-flow h3 {
  margin-bottom: var(--space-sm);
}

.commerce-flow p {
  max-width: 36rem;
  margin: 0;
  color: var(--ink-soft);
}

.flow-fact {
  grid-column: 2;
  width: max-content;
  padding: 0.3rem 0.5rem;
  background: var(--green-pale);
  color: var(--green-deep);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.proof {
  background: var(--ink);
  color: var(--paper-raised);
}

.proof::before {
  background: oklch(40% 0.015 95);
}

.proof .act-label,
.proof-copy > p {
  color: oklch(82% 0.024 85);
}

.proof .act-label span {
  background: var(--coral);
}

.proof-copy {
  margin-bottom: var(--space-3xl);
}

.dst-explainer {
  margin-bottom: var(--space-3xl);
  border-top: 1px solid oklch(48% 0.025 94);
  border-bottom: 1px solid oklch(48% 0.025 94);
}

.explainer-label {
  margin: 0;
  padding: var(--space-md) 0;
  color: var(--coral);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.dst-steps {
  display: grid;
}

.dst-step {
  position: relative;
  padding: var(--space-xl) 0;
  border-top: 1px solid oklch(41% 0.022 94);
}

.dst-step + .dst-step::before {
  content: "↓";
  position: absolute;
  top: 0;
  right: 0;
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  background: var(--coral);
  color: var(--ink);
  font-weight: 700;
  transform: translateY(-50%);
}

.dst-step > span {
  display: block;
  margin-bottom: var(--space-lg);
  color: oklch(73% 0.024 86);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.dst-step h3 {
  max-width: 18ch;
  margin-bottom: var(--space-md);
  color: var(--paper-raised);
  font-size: clamp(1.55rem, 6vw, 2.2rem);
  line-height: 1.02;
}

.dst-step p {
  max-width: 36rem;
  margin: 0;
  color: oklch(78% 0.022 87);
}

.safe-step {
  margin-inline: calc(var(--space-md) * -1);
  padding-inline: var(--space-md);
  background: oklch(29% 0.047 151);
}

.safe-step > span {
  color: oklch(79% 0.106 151);
}

.dst-business-case {
  display: grid;
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
  padding: var(--space-xl);
  background: oklch(27% 0.021 95);
  border: 1px solid oklch(48% 0.025 94);
}

.business-case-intro {
  display: grid;
  gap: var(--space-md);
}

.business-case-intro > p:first-child,
.industry-line > span {
  color: var(--coral);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.business-case-intro > p:first-child,
.business-case-intro > p:last-child,
.industry-line,
.research-note,
.additional-precedent {
  margin: 0;
}

.business-case-intro h3 {
  max-width: 14ch;
  margin: 0;
  color: var(--paper-raised);
  font-size: clamp(2.1rem, 6vw, 4rem);
}

.business-case-intro > p:last-child {
  max-width: 52rem;
  color: oklch(82% 0.022 87);
  font-size: var(--text-lead);
}

.cost-path {
  display: grid;
  gap: var(--space-md);
  align-items: stretch;
}

.cost-stage {
  display: grid;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border: 1px solid oklch(48% 0.025 94);
}

.cost-stage > span {
  color: oklch(73% 0.024 86);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cost-stage b {
  max-width: 23ch;
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  line-height: 1.08;
}

.cost-stage p {
  margin: 0;
  color: oklch(76% 0.022 87);
  font-size: var(--text-sm);
}

.cost-stage-late {
  border-top: 0.25rem solid var(--coral);
}

.cost-stage-early {
  background: oklch(30% 0.045 151);
  border-top: 0.25rem solid oklch(74% 0.14 151);
}

.cost-versus {
  align-self: center;
  color: oklch(66% 0.02 87);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-style: italic;
  text-align: center;
}

.industry-line {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  padding-block: var(--space-md);
  color: oklch(82% 0.022 87);
  border-top: 1px solid oklch(48% 0.025 94);
  border-bottom: 1px solid oklch(48% 0.025 94);
  font-size: var(--text-sm);
}

.precedent-grid {
  display: grid;
  gap: var(--space-md);
}

.precedent-card {
  display: grid;
  align-content: start;
  gap: var(--space-md);
  min-width: 0;
  padding: var(--space-lg);
  background: oklch(23% 0.018 95);
  border: 1px solid oklch(44% 0.025 94);
}

.precedent-card-featured {
  border-color: var(--coral);
}

.precedent-card > span {
  color: oklch(73% 0.024 86);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.precedent-card strong {
  color: var(--paper-raised);
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.4rem);
  font-weight: 450;
  letter-spacing: -0.04em;
  line-height: 0.95;
}

.precedent-card-featured strong {
  color: var(--coral);
}

.precedent-card > p {
  margin: 0;
  color: oklch(78% 0.022 87);
  font-size: var(--text-sm);
}

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  margin-top: auto;
  padding-top: var(--space-sm);
}

.source-links a,
.additional-precedent a {
  color: var(--gold);
  font-size: var(--text-xs);
  font-weight: 700;
}

.research-note,
.additional-precedent {
  max-width: 68rem;
  color: oklch(70% 0.02 87);
  font-size: var(--text-xs);
}

.simulator-shell {
  background: oklch(24% 0.018 95);
  border: 1px solid oklch(44% 0.025 94);
}

.sim-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md);
  border-bottom: 1px solid oklch(44% 0.025 94);
}

.sim-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.proof .button-primary {
  background: var(--coral);
  border-color: var(--coral);
  color: var(--ink);
}

.proof .button-quiet {
  border-color: oklch(56% 0.02 95);
  color: var(--paper);
}

.seed-label {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  color: oklch(77% 0.02 86);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.seed-label output {
  color: var(--paper-raised);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.seed-label small {
  flex-basis: 100%;
  color: oklch(68% 0.02 87);
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: none;
}

.sim-layout {
  display: grid;
}

.sim-stage {
  position: relative;
  min-height: 20rem;
  background: oklch(17.5% 0.015 95);
  overflow: hidden;
}

.sim-stage canvas {
  display: block;
  width: 100%;
  height: 20rem;
  cursor: help;
}

.sim-stage canvas:focus-visible {
  outline-offset: -4px;
}

.sim-tooltip {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  display: grid;
  width: min(15rem, calc(100% - 2rem));
  gap: var(--space-xs);
  padding: 0.7rem 0.8rem;
  background: var(--paper-raised);
  color: var(--ink);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  pointer-events: none;
  transform: translate3d(var(--tooltip-x, 1rem), var(--tooltip-y, 1rem), 0) translateY(0.4rem);
  transition: opacity 140ms var(--ease-out-quart), transform 180ms var(--ease-out-quart);
}

.sim-tooltip.is-visible {
  opacity: 1;
  transform: translate3d(var(--tooltip-x, 1rem), var(--tooltip-y, 1rem), 0) translateY(0);
}

.sim-tooltip b {
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.05;
}

.sim-tooltip span {
  color: var(--ink-soft);
  font-size: var(--text-xs);
}

.sim-stage-label {
  position: absolute;
  inset: auto var(--space-md) var(--space-md);
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-md);
  pointer-events: none;
}

.sim-stage-label span {
  color: oklch(72% 0.02 88);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sim-stage-label b {
  max-width: 10rem;
  color: var(--paper-raised);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.sim-counters {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid oklch(44% 0.025 94);
}

.sim-counters div {
  display: grid;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-right: 1px solid oklch(44% 0.025 94);
  border-bottom: 1px solid oklch(44% 0.025 94);
}

.sim-counters div:nth-child(2n) {
  border-right: 0;
}

.sim-counters span {
  color: oklch(72% 0.02 88);
  font-size: var(--text-xs);
}

.sim-counters strong {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 6vw, 2.2rem);
  font-variant-numeric: tabular-nums;
  font-weight: 450;
  letter-spacing: -0.04em;
}

.sim-counters .invariant-count strong {
  color: oklch(76% 0.14 151);
}

.sim-legend {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-lg) var(--space-md);
  background: oklch(21% 0.016 95);
  border-top: 1px solid oklch(44% 0.025 94);
  border-bottom: 1px solid oklch(44% 0.025 94);
}

.legend-intro {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-sm) var(--space-lg);
}

.legend-intro p,
.legend-intro span,
.legend-explanation {
  margin: 0;
}

.legend-intro p {
  color: var(--coral);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.legend-intro span {
  color: oklch(73% 0.02 87);
  font-size: var(--text-xs);
}

.legend-keys {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: oklch(44% 0.025 94);
  border: 1px solid oklch(44% 0.025 94);
}

.legend-key {
  appearance: none;
  display: grid;
  min-height: 5.25rem;
  grid-template-columns: 2.25rem 1fr;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem;
  background: oklch(24% 0.018 95);
  border: 0;
  color: oklch(78% 0.022 87);
  cursor: help;
  font-size: var(--text-xs);
  font-weight: 700;
  line-height: 1.2;
  text-align: left;
  transition: background-color 180ms var(--ease-out-quart), color 180ms var(--ease-out-quart);
}

.legend-key:is(:hover, :focus-visible, .is-active) {
  background: oklch(31% 0.024 95);
  color: var(--paper-raised);
}

.legend-key.is-active {
  box-shadow: inset 0 -2px var(--coral);
}

.legend-key > i {
  position: relative;
  display: block;
  width: 2rem;
  height: 1rem;
  flex: none;
  font-style: normal;
}

.legend-world::before,
.legend-progress::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: oklch(65% 0.025 87);
}

.legend-world em {
  position: absolute;
  top: calc(50% - 0.22rem);
  left: 0;
  width: 0.44rem;
  height: 0.44rem;
  background: var(--coral);
  border-radius: 50%;
  animation: legend-travel 2.4s var(--ease-in-out) infinite alternate;
}

.legend-dot::before {
  content: "";
  position: absolute;
  top: calc(50% - 0.3rem);
  left: calc(50% - 0.3rem);
  width: 0.6rem;
  height: 0.6rem;
  background: currentColor;
  border-radius: 50%;
  animation: legend-pulse 1.8s var(--ease-in-out) infinite;
}

.legend-order { color: var(--coral); }
.legend-money { color: var(--gold); }
.legend-safe { color: oklch(74% 0.14 151); }

.legend-fault {
  color: var(--coral);
  font-family: var(--font-display);
  font-size: 1.7rem;
  line-height: 0.55;
  text-align: center;
  animation: legend-fault 2.2s var(--ease-in-out) infinite;
}

.legend-progress {
  overflow: hidden;
}

.legend-progress em {
  position: absolute;
  inset: calc(50% - 2px) 0 auto;
  height: 3px;
  background: oklch(67% 0.13 151);
  transform: scaleX(0.68);
  transform-origin: left;
  animation: legend-progress 2.8s var(--ease-in-out) infinite alternate;
}

.legend-explanation {
  min-height: 3.25rem;
  padding: var(--space-md);
  background: var(--paper-raised);
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.legend-explanation b {
  color: var(--ink);
}

@keyframes legend-travel {
  from { transform: translateX(0); }
  to { transform: translateX(1.55rem); }
}

@keyframes legend-pulse {
  0%, 100% { opacity: 0.5; transform: scale(0.72); }
  50% { opacity: 1; transform: scale(1); }
}

@keyframes legend-fault {
  0%, 80%, 100% { opacity: 0.55; transform: scale(0.82); }
  88% { opacity: 1; transform: scale(1); }
}

@keyframes legend-progress {
  from { opacity: 0.55; transform: scaleX(0.2); }
  to { opacity: 1; transform: scaleX(0.9); }
}

.sim-controls {
  display: grid;
  gap: var(--space-xl);
  padding: var(--space-lg) var(--space-md);
}

.sim-controls label,
.price-controls > label:first-child {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-sm);
  color: oklch(82% 0.02 86);
  font-size: var(--text-sm);
  font-weight: 600;
}

.sim-controls output,
.price-controls output {
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  grid-column: 1 / -1;
  width: 100%;
  height: 2.75rem;
  margin: 0;
  accent-color: var(--coral);
  cursor: pointer;
}

.invariant-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
  padding: var(--space-md);
  background: var(--green-pale);
  color: var(--green-deep);
}

.invariant-strip > b {
  flex-basis: 100%;
  color: var(--green-deep);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.invariant-strip span {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 650;
}

.invariant-strip i {
  width: 0.55rem;
  height: 0.55rem;
  background: var(--green);
  border-radius: 50%;
}

.historical-proof {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-3xl);
  padding: var(--space-xl) 0;
  border-top: 1px solid oklch(44% 0.025 94);
  border-bottom: 1px solid oklch(44% 0.025 94);
}

.historical-proof p {
  margin: 0 0 var(--space-md);
  color: var(--coral);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.historical-proof strong {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 500;
}

.historical-proof span {
  margin-bottom: var(--space-lg);
  color: oklch(72% 0.02 88);
}

.founder-proof {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-4xl);
  padding: var(--space-xl);
  background: var(--paper);
  color: var(--ink);
}

.founder-label {
  display: grid;
  gap: var(--space-sm);
  align-content: start;
}

.founder-label span {
  color: var(--coral-deep);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.founder-label b {
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.founder-proof blockquote {
  max-width: 28ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 4.2rem);
  font-weight: 300;
  letter-spacing: -0.036em;
  line-height: 1.02;
}

.founder-context {
  display: grid;
  gap: var(--space-lg);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--line-strong);
}

.founder-context p {
  max-width: 44rem;
  margin: 0;
  color: var(--ink-soft);
}

.proof-before-capital {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
  padding: var(--space-lg);
  background: var(--gold-pale);
  color: var(--ink);
}

.proof-before-capital span {
  color: var(--coral-deep);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.proof-before-capital b {
  max-width: 42rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.15;
}

.technical-detail {
  margin-top: var(--space-xl);
  border-top: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
}

.technical-detail summary {
  min-height: 3.5rem;
  padding: 1rem 2.5rem 1rem 0;
  cursor: pointer;
  font-weight: 650;
}

.technical-detail > div {
  display: grid;
  gap: var(--space-md);
  max-width: 52rem;
  padding: 0 0 var(--space-xl);
  color: oklch(79% 0.02 86);
}

.technical-detail p {
  margin: 0;
}

.economics {
  background: var(--gold-pale);
}

.economics-copy {
  margin-bottom: var(--space-3xl);
}

.policy-equation {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-sm);
  max-width: 44rem;
  margin-top: var(--space-xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--line-strong);
}

.policy-equation span {
  display: grid;
  gap: 0.1rem;
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.policy-equation b {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.policy-equation i {
  align-self: center;
  font-style: normal;
}

.policy-equation .equation-result {
  grid-column: 1 / -1;
  margin-top: var(--space-sm);
  padding: var(--space-md);
  background: var(--ink);
  color: var(--paper);
}

.policy-equation .equation-result b {
  color: var(--paper-raised);
}

.price-lab {
  display: grid;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-sm);
}

.price-controls {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-lg);
  border-bottom: 1px solid var(--line);
}

.price-controls > label:first-child {
  color: var(--ink);
}

.price-controls > label:first-child output {
  font-family: var(--font-display);
  font-size: 1.5rem;
}

.switch-row {
  display: flex;
  min-height: 4rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--line);
  cursor: pointer;
}

.switch-row span {
  display: grid;
  gap: var(--space-xs);
}

.switch-row small {
  max-width: 33rem;
  color: var(--ink-soft);
}

.switch-row input {
  width: 2.75rem;
  height: 2.75rem;
  accent-color: var(--green);
}

.receipt {
  padding: var(--space-lg);
}

.receipt > div {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 0.6rem 0;
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.receipt b {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.receipt .receipt-head {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: var(--text-body);
  font-weight: 700;
}

.receipt-head b {
  color: var(--ink-faint);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
}

.receipt .receipt-total {
  margin: var(--space-sm) 0;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: var(--text-body);
  font-weight: 700;
}

.receipt .yield-row {
  margin-top: var(--space-md);
  padding: var(--space-md);
  background: var(--coral-pale);
  color: var(--coral-deep);
  font-weight: 650;
}

.receipt .yield-row b {
  color: var(--coral-deep);
}

.allocation {
  padding: 0 var(--space-lg) var(--space-lg);
}

.allocation-bar {
  display: flex;
  height: 1.25rem;
  background: var(--paper-deep);
  overflow: hidden;
}

.allocation-bar span {
  display: block;
  height: 100%;
  transform-origin: left;
  transition: transform 300ms var(--ease-out-quart);
}

.allocation-seller { background: var(--green); }
.allocation-platform { background: var(--coral); }
.allocation-processor { background: var(--gold); }

.allocation-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
  padding-top: var(--space-md);
  color: var(--ink-soft);
  font-size: var(--text-xs);
}

.allocation-legend span {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.allocation-legend i {
  width: 0.6rem;
  height: 0.6rem;
}

.legend-seller { background: var(--green); }
.legend-platform { background: var(--coral); }
.legend-processor { background: var(--gold); }

.scale-model {
  margin-top: var(--space-3xl);
  padding-block: var(--space-xl);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.scale-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.scale-heading p {
  margin: 0;
  color: var(--ink-soft);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scenario-tabs {
  display: flex;
  max-width: 100%;
  border: 1px solid var(--ink);
  overflow-x: auto;
}

.scenario-tabs button {
  min-width: 5.5rem;
  min-height: 2.75rem;
  padding: 0.5rem 0.75rem;
  background: transparent;
  border: 0;
  border-right: 1px solid var(--ink);
  color: var(--ink);
  cursor: pointer;
  font-size: var(--text-sm);
  font-weight: 650;
}

.scenario-tabs button:last-child {
  border-right: 0;
}

.scenario-tabs button[aria-selected="true"] {
  background: var(--ink);
  color: var(--paper-raised);
}

.scale-values {
  display: grid;
  margin-top: var(--space-xl);
}

.scale-values div {
  display: grid;
  gap: var(--space-sm);
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--line);
}

.scale-values span {
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.scale-values strong {
  font-family: var(--font-display);
  font-size: clamp(2rem, 9vw, 4rem);
  font-variant-numeric: tabular-nums;
  font-weight: 400;
  letter-spacing: -0.06em;
}

.model-note {
  max-width: 61rem;
  margin: var(--space-xl) 0 0;
  color: var(--ink-soft);
  font-size: var(--text-xs);
}

.architecture {
  background: var(--paper-raised);
}

.architecture-copy {
  margin-bottom: var(--space-3xl);
}

.architecture-stage {
  display: grid;
  max-width: 64rem;
}

.architecture-layer {
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-lg);
  border: 1px solid var(--line-strong);
  background: var(--paper);
}

.architecture-layer > span,
.cell > span {
  color: var(--ink-faint);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.architecture-layer b,
.cell b {
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.architecture-layer small,
.cell small {
  color: var(--ink-soft);
}

.protocol-layer {
  background: var(--coral-pale);
  border-color: var(--coral);
}

.poise-layer {
  background: var(--green-pale);
  border-color: var(--green);
}

.layer-connector {
  position: relative;
  height: 2.5rem;
}

.layer-connector::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--ink-soft);
}

.layer-connector i {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--ink);
  border-radius: 50%;
  transform: translate(-45%, 50%);
}

.cell-row {
  display: grid;
  gap: var(--space-md);
}

.cell {
  display: grid;
  min-height: 8rem;
  align-content: start;
  gap: var(--space-sm);
  padding: var(--space-lg);
  border: 1px solid var(--line-strong);
}

.cell.active {
  background: var(--ink);
  color: var(--paper-raised);
  border-color: var(--ink);
}

.cell.active span,
.cell.active small {
  color: var(--paper-deep);
}

.cell.future {
  background: var(--paper);
  border-style: dashed;
}

.architecture-consequences {
  display: grid;
  margin-top: var(--space-3xl);
  border-top: 1px solid var(--line-strong);
}

.architecture-consequences p {
  display: grid;
  gap: var(--space-sm);
  margin: 0;
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
}

.architecture-consequences span {
  color: var(--coral-deep);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.architecture-consequences b {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.5rem;
}

.architecture .technical-detail > div {
  color: var(--ink-soft);
}

.topology-detail .text-link {
  color: var(--coral-deep);
}

.ask {
  background: var(--coral);
}

.ask::before {
  background: oklch(53% 0.17 34);
}

.ask-copy {
  margin-bottom: var(--space-3xl);
}

.ask .act-label,
.ask-copy > p {
  color: oklch(27% 0.07 31);
}

.ask .act-label span {
  background: var(--paper-raised);
  color: var(--coral-deep);
}

.ask-grid {
  display: grid;
  background: var(--paper-raised);
  box-shadow: var(--shadow-sm);
}

.ask-main,
.next-mile {
  padding: var(--space-xl);
}

.ask-main > span,
.next-mile > span {
  display: block;
  margin-bottom: var(--space-xl);
  color: var(--ink-faint);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.ask-main p {
  margin: 0;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
}

.ask-main b {
  display: block;
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 1.45rem;
}

.next-mile {
  background: var(--ink);
  color: var(--paper-raised);
}

.next-mile > span,
.next-mile small {
  color: var(--paper-deep);
}

.next-mile ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: mile;
}

.next-mile li {
  counter-increment: mile;
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: var(--space-xs) var(--space-md);
  padding: var(--space-lg) 0;
  border-top: 1px solid oklch(43% 0.02 95);
}

.next-mile li::before {
  content: "0" counter(mile);
  grid-row: 1 / 3;
  color: var(--coral);
  font-size: var(--text-xs);
  font-weight: 700;
}

.next-mile b,
.next-mile small {
  grid-column: 2;
}

.closing-cta {
  display: grid;
  gap: var(--space-xl);
  margin-top: var(--space-4xl);
}

.closing-cta p {
  max-width: 9ch;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3rem, 11vw, 8rem);
  font-weight: 300;
  letter-spacing: -0.044em;
  line-height: 0.93;
}

.closing-cta .button {
  width: max-content;
  max-width: 100%;
}

.closing-cta > span {
  color: oklch(29% 0.07 31);
  font-size: var(--text-sm);
  font-weight: 650;
}

.site-footer {
  display: grid;
  gap: var(--space-lg);
  padding: var(--space-3xl) var(--space-lg) 7rem;
  background: var(--paper);
  border-top: 1px solid var(--line-strong);
  color: var(--ink-soft);
  font-size: var(--text-sm);
}

.site-footer > * {
  margin: 0;
}

@media (hover: hover) and (pointer: fine) {
  .button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0.45rem 0 var(--gold);
  }

  .button-quiet:hover {
    background: var(--paper-raised);
    color: var(--ink);
    box-shadow: none;
  }

  .text-link:hover {
    color: var(--coral-deep);
  }

  .deck-rail a:hover {
    color: var(--paper-raised);
  }

  .scenario-tabs button:hover:not([aria-selected="true"]) {
    background: var(--paper-deep);
  }
}

@media (min-width: 40rem) {
  :root {
    --header-height: 5rem;
  }

  .site-header {
    grid-template-columns: 1fr auto auto;
    padding-inline: var(--space-xl);
  }

  .site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
  }

  .site-nav a {
    display: grid;
    min-height: 2.75rem;
    place-items: center;
    color: var(--ink-soft);
    font-size: var(--text-sm);
    font-weight: 600;
    text-decoration: none;
  }

  .site-nav a[aria-current="true"] {
    color: var(--coral-deep);
  }

  .header-cta {
    display: inline-flex;
    min-height: 2.75rem;
    align-items: center;
    padding: 0.65rem 1rem;
    background: var(--coral);
    color: var(--ink);
    font-size: var(--text-sm);
    font-weight: 700;
    text-decoration: none;
  }

  .scene {
    padding-inline: var(--space-2xl);
  }

  .opening {
    grid-template-columns: minmax(0, 1fr);
    align-content: start;
    align-items: start;
  }

  .opening > * {
    width: auto;
    margin-inline: 0;
  }

  .opening-copy {
    grid-column: 1;
    max-width: 42rem;
  }

  .market-machine {
    grid-column: 1;
    width: min(100%, 44rem);
    min-height: clamp(30rem, 68vw, 38rem);
    margin-inline: auto;
  }

  .opening-note {
    grid-column: 1;
    width: min(100%, 44rem);
    margin-inline: auto;
  }

  .section-intro {
    grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 0.85fr);
    column-gap: var(--space-3xl);
  }

  .section-intro .act-label {
    grid-column: 1 / -1;
  }

  .section-intro h2 {
    grid-column: 1;
  }

  .section-intro > p:last-child {
    grid-column: 2;
    align-self: end;
  }

  .market-evidence {
    grid-template-columns: 1.15fr 0.85fr;
  }

  .evidence-number {
    grid-row: 1 / 4;
  }

  .evidence-rule,
  .evidence-pair,
  .source-note {
    grid-column: 2;
  }

  .human-thesis {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .sim-controls {
    grid-template-columns: repeat(3, 1fr);
  }

  .legend-keys {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .cost-path {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  }

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

  .precedent-card:last-child {
    grid-column: 1 / -1;
  }

  .historical-proof {
    grid-template-columns: repeat(3, 1fr);
    column-gap: var(--space-xl);
  }

  .historical-proof p {
    grid-column: 1 / -1;
  }

  .historical-proof span {
    grid-row: 3;
  }

  .policy-equation {
    grid-template-columns: 1fr auto 1.35fr auto 1.4fr;
    align-items: stretch;
  }

  .policy-equation .equation-result {
    grid-column: auto;
    margin: 0;
  }

  .price-lab {
    grid-template-columns: minmax(0, 0.9fr) minmax(19rem, 1.1fr);
  }

  .price-controls {
    border-right: 1px solid var(--line);
    border-bottom: 0;
  }

  .allocation {
    grid-column: 1 / -1;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--line);
  }

  .scale-values {
    grid-template-columns: repeat(3, 1fr);
  }

  .scale-values div {
    padding-right: var(--space-lg);
  }

  .scale-values div + div {
    padding-left: var(--space-lg);
    border-left: 1px solid var(--line);
  }

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

  .architecture-consequences {
    grid-template-columns: repeat(3, 1fr);
  }

  .architecture-consequences p {
    padding-right: var(--space-lg);
  }

  .architecture-consequences p + p {
    padding-left: var(--space-lg);
    border-left: 1px solid var(--line);
  }

  .ask-grid {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .closing-cta {
    grid-template-columns: 1fr auto;
    align-items: end;
  }

  .closing-cta p {
    grid-row: 1 / 3;
  }

  .site-footer {
    grid-template-columns: 1fr auto auto;
    align-items: center;
    padding: var(--space-3xl) var(--space-2xl) 7rem;
  }
}

@media (min-width: 40rem) and (max-width: 47.999rem) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .header-cta {
    display: none;
  }

  .site-nav {
    gap: var(--space-md);
  }

  .site-nav a {
    font-size: var(--text-xs);
  }
}

@media (min-width: 64rem) {
  :root {
    --header-height: 5.5rem;
  }

  html {
    scroll-snap-type: y proximity;
  }

  .site-header {
    padding-inline: var(--space-2xl);
  }

  .scene {
    scroll-snap-align: start;
    padding: calc(var(--header-height) + var(--space-4xl)) max(7rem, calc((100vw - var(--content)) / 2)) var(--space-4xl);
  }

  .scene::before {
    left: max(5.25rem, calc((100vw - var(--content)) / 2 - 2rem));
  }

  .deck-rail {
    --rail-row: 3.5rem;
    --rail-offset: 0rem;
    --rail-current: var(--coral);
    --rail-muted: var(--ink-faint);
    --rail-line-base: var(--line);
    top: 50%;
    right: auto;
    bottom: auto;
    left: var(--space-lg);
    display: grid;
    gap: 0;
    padding: 0;
    background: transparent;
    color: var(--ink);
    box-shadow: none;
    transform: translateY(-50%);
  }

  .deck-rail[data-current="opening"],
  .deck-rail[data-current="ask"] {
    --rail-current: var(--coral);
  }

  .deck-rail[data-current="opportunity"],
  .deck-rail[data-current="economics"] {
    --rail-current: var(--gold);
  }

  .deck-rail[data-current="spine"],
  .deck-rail[data-current="architecture"] {
    --rail-current: oklch(67% 0.13 151);
  }

  .deck-rail[data-current="proof"] {
    --rail-current: var(--mint);
    --rail-muted: oklch(72% 0.022 87);
    --rail-line-base: oklch(43% 0.022 94);
  }

  .deck-rail[data-current="ask"] {
    --rail-current: var(--paper-raised);
    --rail-muted: oklch(31% 0.07 31);
    --rail-line-base: oklch(48% 0.13 33);
  }

  .rail-cursor {
    position: absolute;
    z-index: 0;
    top: 0;
    left: -0.2rem;
    display: block;
    width: 5.7rem;
    height: var(--rail-row);
    background: color-mix(in oklch, var(--rail-current) 13%, transparent);
    border: 1px solid color-mix(in oklch, var(--rail-current) 48%, transparent);
    pointer-events: none;
    transform: translateY(var(--rail-offset));
    transition: transform 420ms var(--ease-out-quint), background-color 320ms var(--ease-out-quart), border-color 320ms var(--ease-out-quart);
  }

  .deck-rail a {
    z-index: 1;
    width: 5rem;
    height: var(--rail-row);
    grid-template-columns: 1.75rem 1fr;
    place-content: center start;
    gap: var(--space-sm);
    color: var(--rail-muted);
    opacity: 0.7;
  }

  .deck-rail a::after {
    content: "";
    position: absolute;
    top: 50%;
    left: -0.71rem;
    width: 0.42rem;
    height: 0.42rem;
    background: var(--rail-line-base);
    border: 2px solid var(--paper);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0.68);
    transition: background-color 260ms var(--ease-out-quart), border-color 260ms var(--ease-out-quart), transform 300ms var(--ease-out-quint);
  }

  .deck-rail[data-current="proof"] a::after {
    border-color: var(--ink);
  }

  .deck-rail[data-current="ask"] a::after {
    border-color: var(--coral);
  }

  .deck-rail[data-current="ask"] a[aria-current="true"] {
    color: var(--ink);
  }

  .deck-rail[data-current="ask"] a[aria-current="true"]::after {
    background: var(--paper-raised);
    border-color: var(--coral-deep);
  }

  .deck-rail a.is-past::after,
  .deck-rail a[aria-current="true"]::after {
    background: var(--chapter-color);
  }

  .deck-rail a.is-past {
    opacity: 0.82;
  }

  .deck-rail a[aria-current="true"] {
    color: var(--chapter-text);
    opacity: 1;
  }

  .deck-rail[data-current="proof"] a[aria-current="true"] {
    color: var(--chapter-color);
  }

  .deck-rail a > span,
  .deck-rail a[aria-current="true"] > span {
    width: auto;
    height: auto;
    place-items: initial;
    background: transparent;
    color: inherit;
    transform: none;
  }

  .deck-rail a[aria-current="true"]::after {
    transform: translate(-50%, -50%) scale(1.25);
    animation: rail-node-pulse 1.8s var(--ease-in-out) infinite;
  }

  .deck-rail b {
    display: block;
    font-size: var(--text-xs);
    font-weight: 650;
    transition: transform 300ms var(--ease-out-quint);
  }

  .deck-rail a[aria-current="true"] b {
    font-weight: 750;
    transform: translateX(0.16rem);
  }

  .deck-rail a:hover {
    color: var(--chapter-text);
    opacity: 1;
  }

  .deck-rail[data-current="proof"] a:hover {
    color: var(--chapter-color);
  }

  .rail-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: -0.5rem;
    display: block;
    width: 2px;
    background: var(--rail-line-base);
    overflow: hidden;
    transition: background-color 300ms var(--ease-out-quart);
  }

  .rail-line span {
    display: block;
    width: 100%;
    height: 100%;
    background: linear-gradient(
      to bottom,
      var(--coral) 0 14%,
      var(--gold) 14% 29%,
      oklch(67% 0.13 151) 29% 43%,
      var(--mint) 43% 57%,
      var(--gold) 57% 71%,
      oklch(67% 0.13 151) 71% 86%,
      var(--coral) 86% 100%
    );
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 140ms linear;
  }

  @keyframes rail-node-pulse {
    0%, 100% { opacity: 0.72; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 1; transform: translate(-50%, -50%) scale(1.4); }
  }

  .opening {
    grid-template-columns: minmax(20rem, 0.9fr) minmax(27rem, 1.1fr);
    grid-template-rows: auto auto;
    align-content: center;
    align-items: center;
    column-gap: clamp(var(--space-xl), 4vw, var(--space-3xl));
    row-gap: var(--space-lg);
    padding-top: calc(var(--header-height) + var(--space-xl));
    padding-bottom: var(--space-xl);
  }

  .opening-copy {
    grid-column: 1;
    grid-row: 1;
    max-width: none;
  }

  .opening-copy h1 {
    max-width: none;
    font-size: clamp(3.65rem, min(6vw, 10vh), 7.15rem);
  }

  .opening-copy h1 span {
    display: block;
  }

  .opening-note {
    grid-column: 1;
    grid-row: 2;
    width: auto;
    margin-inline: 0;
  }

  .market-machine {
    grid-column: 2;
    grid-row: 1 / 3;
    width: 100%;
    min-height: min(70svh, 42rem);
    margin-inline: 0;
  }

  .product-spine {
    display: grid;
    grid-template-columns: minmax(20rem, 0.8fr) minmax(0, 1.2fr);
    gap: var(--space-4xl);
    align-items: start;
  }

  .product-spine > * {
    width: auto;
    margin-inline: 0;
  }

  .sticky-copy {
    position: sticky;
    top: calc(var(--header-height) + var(--space-2xl));
  }

  .commerce-flow li {
    grid-template-columns: 3rem 1fr auto;
    align-items: center;
    min-height: 11rem;
  }

  .flow-fact {
    grid-column: 3;
  }

  .proof-copy,
  .economics-copy,
  .architecture-copy,
  .ask-copy {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    column-gap: var(--space-4xl);
  }

  .proof-copy .act-label,
  .economics-copy .act-label,
  .architecture-copy .act-label,
  .ask-copy .act-label {
    grid-column: 1 / -1;
  }

  .proof-copy h2,
  .economics-copy h2,
  .architecture-copy h2,
  .ask-copy h2 {
    grid-column: 1;
  }

  .proof-copy > p,
  .economics-copy > p,
  .architecture-copy > p,
  .ask-copy > p {
    grid-column: 2;
    align-self: end;
  }

  .kernel-status,
  .policy-equation {
    grid-column: 2;
  }

  .sim-layout {
    grid-template-columns: 1.35fr 0.65fr;
  }

  .legend-keys {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .dst-business-case {
    padding: var(--space-2xl);
  }

  .business-case-intro {
    grid-template-columns: minmax(18rem, 0.75fr) minmax(0, 1.25fr);
    column-gap: var(--space-3xl);
    align-items: end;
  }

  .business-case-intro > p:first-child {
    grid-column: 1 / -1;
  }

  .precedent-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .precedent-card:last-child {
    grid-column: auto;
  }

  .dst-steps {
    grid-template-columns: repeat(3, 1fr);
  }

  .dst-step {
    min-height: 19rem;
    padding: var(--space-xl);
    border-top: 1px solid oklch(41% 0.022 94);
    border-right: 1px solid oklch(41% 0.022 94);
  }

  .dst-step:first-child {
    padding-left: 0;
  }

  .dst-step:last-child {
    border-right: 0;
  }

  .dst-step + .dst-step::before {
    content: "→";
    top: 50%;
    right: auto;
    left: 0;
    transform: translate(-50%, -50%);
  }

  .safe-step {
    margin-inline: 0;
    padding-inline: var(--space-xl);
  }

  .founder-proof {
    grid-template-columns: minmax(12rem, 0.38fr) minmax(0, 1.62fr);
    gap: var(--space-2xl) var(--space-4xl);
    padding: var(--space-3xl);
  }

  .founder-proof blockquote,
  .founder-context {
    grid-column: 2;
  }

  .founder-context {
    grid-template-columns: repeat(2, 1fr);
  }

  .proof-before-capital {
    grid-column: 1 / -1;
    grid-template-columns: minmax(12rem, 0.38fr) minmax(0, 1.62fr);
    gap: var(--space-4xl);
    align-items: center;
  }

  .sim-stage,
  .sim-stage canvas {
    min-height: 31rem;
    height: 31rem;
  }

  .sim-counters {
    grid-template-columns: 1fr;
    border-top: 0;
    border-left: 1px solid oklch(44% 0.025 94);
  }

  .sim-counters div,
  .sim-counters div:nth-child(2n) {
    border-right: 0;
  }

  .economics-copy {
    align-items: start;
  }

  .policy-equation {
    grid-template-columns: 1fr auto 1fr;
    align-self: start;
    margin-top: 0;
  }

  .policy-equation .equation-result {
    grid-column: 1 / -1;
  }

  .architecture-stage {
    margin-left: auto;
    margin-right: auto;
  }

  .closing-cta .button {
    min-height: 3.25rem;
    padding-inline: 1.4rem;
  }
}

@media (min-width: 100rem) {
  .site-header {
    padding-inline: max(var(--space-2xl), calc((100vw - 96rem) / 2));
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .market-evidence .evidence-rule span {
    transform: scaleX(1);
  }
}

@media print {
  :root {
    --paper: oklch(98.5% 0.004 85);
    --paper-raised: oklch(98.5% 0.004 85);
  }

  html,
  body {
    background: var(--paper);
  }

  .site-header,
  .deck-rail,
  .hero-actions,
  .sim-actions,
  .sim-controls,
  .scenario-tabs,
  .site-footer {
    display: none !important;
  }

  .scene {
    min-height: auto;
    padding: 1.25cm;
    break-before: page;
  }

  .scene:first-child {
    break-before: auto;
  }

  .scene::before,
  .opening::after {
    display: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .technical-detail > div {
    display: grid !important;
  }

  .market-machine,
  .simulator-shell,
  .price-lab,
  .ask-grid {
    box-shadow: none;
  }
}