:root {
  color-scheme: dark;
  --ink: #0a0a0a;
  --ink-soft: #171717;
  --paper: #eeeee9;
  --paper-bright: #fafaf6;
  --paper-muted: #d2d2cb;
  --graphite: #74746f;
  --line-dark: rgba(255, 255, 255, 0.18);
  --line-light: rgba(10, 10, 10, 0.16);
  --accent: #d6ff45;
  --accent-ink: #172000;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Avenir Next", Avenir, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --page-pad: clamp(1.25rem, 4vw, 4.5rem);
  --content: 82rem;
  --header-height: 5rem;
  --shadow-paper: 0 2rem 6rem rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: clip;
  background: var(--ink);
}

section[id] {
  scroll-margin-top: var(--header-height);
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: hidden;
  background: var(--ink);
  color: var(--paper-bright);
  font-family: var(--sans);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::selection {
  background: var(--accent);
  color: var(--accent-ink);
}

a {
  color: inherit;
}

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

button {
  font: inherit;
}

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

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  transform: translateY(-160%);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 800;
  text-decoration: none;
  transition: transform 180ms ease;
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 40;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: var(--header-height);
  padding: 0 var(--page-pad);
  border-bottom: 1px solid transparent;
  color: var(--paper-bright);
  transition:
    background-color 220ms ease,
    border-color 220ms ease,
    backdrop-filter 220ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line-dark);
  background: rgba(8, 8, 8, 0.86);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  gap: 0.65rem;
  align-items: center;
  color: inherit;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 1.75rem;
  height: 1.75rem;
  place-items: center;
  border: 1px solid currentColor;
  font-family: var(--serif);
  font-size: 1rem;
  line-height: 1;
  transform: rotate(3deg);
}

.site-nav {
  display: flex;
  gap: clamp(1rem, 2.4vw, 2.2rem);
  justify-self: center;
}

.site-nav a,
.header-action {
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a {
  position: relative;
  padding: 0.55rem 0;
  color: rgba(250, 250, 246, 0.72);
}

.site-nav a::after {
  position: absolute;
  right: 0;
  bottom: 0.25rem;
  left: 0;
  height: 1px;
  content: "";
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.site-nav a:hover {
  color: var(--paper-bright);
}

.site-nav a:hover::after {
  transform: scaleX(1);
}

.header-action {
  padding: 0.72rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.48);
  transition:
    background-color 180ms ease,
    color 180ms ease,
    transform 180ms ease;
}

.header-action:hover {
  background: var(--paper-bright);
  color: var(--ink);
  transform: translateY(-2px);
}

.hero {
  position: relative;
  display: grid;
  min-height: 100dvh;
  overflow: hidden;
  align-content: center;
  padding: calc(var(--header-height) + 4rem) var(--page-pad) 7rem;
  isolation: isolate;
}

.particle-field,
.story-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.paper-flow {
  position: absolute;
  z-index: -3;
  inset: -14%;
  background:
    radial-gradient(circle at 63% 30%, rgba(255, 255, 255, 0.48), transparent 21%),
    radial-gradient(circle at 25% 56%, rgba(255, 255, 255, 0.16), transparent 19%),
    radial-gradient(circle at 80% 77%, rgba(255, 255, 255, 0.1), transparent 24%),
    linear-gradient(135deg, #050505 10%, #3a3a38 54%, #090909 88%);
  filter: blur(3rem) contrast(115%);
  transform: scale(1.1);
  animation: paper-drift 16s ease-in-out infinite alternate;
}

.hero::after {
  position: absolute;
  z-index: -1;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.82) 0%, rgba(0, 0, 0, 0.4) 46%, transparent 74%),
    linear-gradient(0deg, rgba(0, 0, 0, 0.45), transparent 28%);
}

.hero-grain {
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  opacity: 0.15;
  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='.92' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.45'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

@keyframes paper-drift {
  from {
    transform: scale(1.08) translate3d(-2%, -2%, 0) rotate(-2deg);
  }

  to {
    transform: scale(1.16) translate3d(3%, 2%, 0) rotate(2deg);
  }
}

.hero-copy {
  position: relative;
  z-index: 3;
  width: min(47rem, 62vw);
  margin-top: -2rem;
}

.eyebrow {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  margin: 0 0 1.4rem;
  color: rgba(250, 250, 246, 0.62);
  font-size: 0.71rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 2.2rem;
  height: 1px;
  content: "";
  background: currentColor;
}

.eyebrow.dark {
  color: rgba(10, 10, 10, 0.54);
}

.hero h1,
.section-copy h2,
.story-heading h2,
.authority-copy h2,
.section-heading h2,
.evidence-intro h2,
.start-copy h2,
.not-found-copy h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.06em;
  line-height: 0.94;
  text-wrap: balance;
}

.hero h1 {
  max-width: 12ch;
  font-size: clamp(3.5rem, 7.2vw, 7.8rem);
  text-shadow: 0 0 3.5rem rgba(255, 255, 255, 0.12);
}

.hero-summary {
  max-width: 57ch;
  margin: 2rem 0 0;
  color: rgba(250, 250, 246, 0.72);
  font-size: clamp(1rem, 1.45vw, 1.2rem);
  line-height: 1.72;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 1.8rem;
  align-items: center;
  margin-top: 2.4rem;
}

.button {
  display: inline-flex;
  min-height: 3.1rem;
  padding: 0.85rem 1.3rem;
  align-items: center;
  justify-content: center;
  border: 1px solid currentColor;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-decoration: none;
  text-transform: uppercase;
  transition:
    transform 180ms ease,
    background-color 180ms ease,
    color 180ms ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button:active,
.header-action:active {
  transform: translateY(1px);
}

.button-light {
  border-color: var(--paper-bright);
  background: var(--paper-bright);
  color: var(--ink);
}

.button-light:hover {
  background: transparent;
  color: var(--paper-bright);
}

.text-link {
  display: inline-flex;
  gap: 0.6rem;
  align-items: center;
  color: rgba(250, 250, 246, 0.78);
  font-size: 0.8rem;
  font-weight: 750;
  letter-spacing: 0.05em;
  text-decoration: none;
}

.text-link span {
  transition: transform 180ms ease;
}

.text-link:hover span {
  transform: translateY(4px);
}

.particle-label {
  position: absolute;
  z-index: -2;
  top: 50%;
  right: -0.03em;
  color: rgba(255, 255, 255, 0.22);
  font-size: clamp(8rem, 24vw, 25rem);
  font-weight: 900;
  letter-spacing: -0.11em;
  line-height: 0.7;
  transform: translateY(-48%);
  transition: opacity 240ms ease;
}

.canvas-ready .particle-label {
  display: none;
}

.hero-status {
  position: absolute;
  z-index: 4;
  right: var(--page-pad);
  bottom: 2rem;
  display: flex;
  gap: 0;
  margin: 0;
  border: 1px solid var(--line-dark);
  background: rgba(8, 8, 8, 0.28);
  backdrop-filter: blur(12px);
}

.hero-status div {
  display: grid;
  min-width: 9rem;
  gap: 0.1rem;
  padding: 0.75rem 0.9rem;
  border-left: 1px solid var(--line-dark);
}

.hero-status div:first-child {
  border-left: 0;
}

.hero-status dt {
  color: rgba(250, 250, 246, 0.46);
  font-size: 0.58rem;
  font-weight: 750;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.hero-status dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
}

.scroll-cue {
  position: absolute;
  z-index: 4;
  bottom: 2rem;
  left: var(--page-pad);
  display: inline-flex;
  gap: 0.8rem;
  align-items: center;
  color: rgba(250, 250, 246, 0.56);
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-decoration: none;
  text-transform: uppercase;
}

.scroll-cue i {
  display: block;
  width: 2.6rem;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.22);
}

.scroll-cue i::after {
  display: block;
  width: 50%;
  height: 100%;
  content: "";
  background: var(--paper-bright);
  animation: cue-line 2s ease-in-out infinite;
}

@keyframes cue-line {
  0% {
    transform: translateX(-110%);
  }

  60%,
  100% {
    transform: translateX(210%);
  }
}

.problem-section {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: minmax(5rem, 0.45fr) minmax(0, 1.35fr) minmax(15rem, 0.7fr);
  gap: clamp(2rem, 5vw, 7rem);
  min-height: 84vh;
  padding: clamp(7rem, 12vw, 12rem) var(--page-pad);
  align-items: center;
  background: var(--paper);
  color: var(--ink);
}

.section-index {
  align-self: start;
  padding-top: 0.55rem;
  color: rgba(10, 10, 10, 0.28);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.section-copy h2,
.story-heading h2,
.authority-copy h2,
.section-heading h2,
.evidence-intro h2,
.start-copy h2 {
  font-size: clamp(3.3rem, 6vw, 6.7rem);
}

.section-copy > p:not(.eyebrow),
.authority-copy > p:not(.eyebrow),
.evidence-intro > p:not(.eyebrow),
.start-copy > p:not(.eyebrow) {
  max-width: 62ch;
  margin: 1.8rem 0 0;
  color: rgba(10, 10, 10, 0.64);
  font-size: clamp(1rem, 1.35vw, 1.18rem);
  line-height: 1.8;
  text-wrap: pretty;
}

.margin-note {
  align-self: end;
  padding: 1.5rem 0 0;
  border-top: 1px solid var(--line-light);
}

.margin-note span {
  color: rgba(10, 10, 10, 0.44);
  font-size: 0.66rem;
  font-weight: 850;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.margin-note p {
  margin: 1rem 0 0;
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2vw, 2rem);
  line-height: 1.25;
}

.story-section {
  position: relative;
  z-index: 4;
  border-top: 1px solid var(--line-dark);
  background: var(--ink);
}

.story-heading {
  position: relative;
  z-index: 4;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(15rem, 0.65fr);
  gap: clamp(2rem, 7vw, 8rem);
  max-width: var(--content);
  margin: 0 auto;
  padding: clamp(8rem, 12vw, 12rem) var(--page-pad) clamp(6rem, 9vw, 9rem);
}

.story-heading .eyebrow,
.story-heading h2 {
  grid-column: 1;
}

.story-heading h2 {
  max-width: 10ch;
}

.story-heading > p:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  max-width: 48ch;
  margin: 0 0 0.5rem;
  color: rgba(250, 250, 246, 0.58);
  font-size: 1rem;
  line-height: 1.78;
}

.story-layout {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(26rem, 0.95fr);
  max-width: 105rem;
  margin: 0 auto;
}

.story-visual {
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow: hidden;
  border-right: 1px solid var(--line-dark);
  background:
    radial-gradient(circle at 50% 48%, rgba(255, 255, 255, 0.18), transparent 28%),
    linear-gradient(145deg, #292927, #050505 65%);
  isolation: isolate;
}

.story-visual::before,
.story-visual::after {
  position: absolute;
  z-index: -1;
  width: 52%;
  height: 70%;
  border-radius: 50%;
  content: "";
  filter: blur(4rem);
  opacity: 0.44;
}

.story-visual::before {
  top: -18%;
  right: -18%;
  background: rgba(255, 255, 255, 0.74);
}

.story-visual::after {
  bottom: -28%;
  left: 4%;
  background: rgba(255, 255, 255, 0.22);
}

.story-visual-word {
  position: absolute;
  right: 1.5rem;
  bottom: 1rem;
  left: 1.5rem;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.12);
  font-size: clamp(3.8rem, 8vw, 9rem);
  font-weight: 900;
  letter-spacing: -0.08em;
  line-height: 0.85;
  text-align: center;
  text-overflow: clip;
  white-space: nowrap;
}

.story-progress {
  position: absolute;
  top: 50%;
  right: 1rem;
  width: 2px;
  height: min(42vh, 20rem);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-50%);
}

.story-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: var(--paper-bright);
  transform: scaleY(0);
  transform-origin: top;
}

.story-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.story-step {
  display: grid;
  min-height: 94dvh;
  padding: 7rem clamp(2rem, 5vw, 6rem);
  place-items: center;
  border-bottom: 1px solid var(--line-dark);
}

.story-step article {
  width: min(100%, 38rem);
  opacity: 1;
  transform: none;
  transition:
    opacity 520ms ease,
    transform 620ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.canvas-ready .story-step article {
  opacity: 0.36;
  transform: translateY(3rem);
}

.canvas-ready .story-step.is-current article {
  opacity: 1;
  transform: translateY(0);
}

.story-step.paper-step {
  padding: clamp(2rem, 4vw, 4rem);
}

.story-step.paper-step article {
  padding: clamp(2.2rem, 5vw, 5rem);
  background: var(--paper);
  box-shadow: var(--shadow-paper);
  color: var(--ink);
}

.story-number,
.story-output {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.story-number {
  color: rgba(250, 250, 246, 0.42);
}

.paper-step .story-number {
  color: rgba(10, 10, 10, 0.36);
}

.story-kicker {
  margin: 2rem 0 0.75rem;
  color: rgba(250, 250, 246, 0.58);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.paper-step .story-kicker {
  color: rgba(10, 10, 10, 0.48);
}

.story-step h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.6rem, 4.5vw, 5rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.98;
  text-wrap: balance;
}

.story-step article > p:not(.story-kicker) {
  max-width: 58ch;
  margin: 1.6rem 0 0;
  color: rgba(250, 250, 246, 0.62);
  font-size: 0.96rem;
  line-height: 1.75;
  text-wrap: pretty;
}

.paper-step article > p:not(.story-kicker) {
  color: rgba(10, 10, 10, 0.62);
}

.story-output {
  display: block;
  margin-top: 2.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line-dark);
  color: rgba(250, 250, 246, 0.48);
}

.paper-step .story-output {
  border-color: var(--line-light);
  color: rgba(10, 10, 10, 0.48);
}

.authority-section {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(30rem, 1.15fr);
  gap: clamp(4rem, 8vw, 10rem);
  padding: clamp(8rem, 12vw, 12rem) var(--page-pad);
  background: var(--paper);
  color: var(--ink);
}

.authority-copy h2 {
  max-width: 11ch;
}

.authority-map {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  align-items: center;
  align-self: center;
}

.authority-map > div {
  display: grid;
  min-height: 12rem;
  padding: 1.3rem;
  align-content: space-between;
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.authority-map > div > span {
  color: rgba(10, 10, 10, 0.36);
  font-family: var(--mono);
  font-size: 0.65rem;
}

.authority-map strong {
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2vw, 2.15rem);
  font-weight: 400;
  letter-spacing: -0.035em;
}

.authority-map small {
  color: rgba(10, 10, 10, 0.52);
  line-height: 1.35;
}

.authority-map > i {
  width: clamp(1rem, 2vw, 2.8rem);
  height: 1px;
  background: var(--line-light);
}

.authority-map .authority-gate {
  min-height: 14rem;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper-bright);
  transform: translateY(-1rem);
}

.authority-map .authority-gate > span,
.authority-map .authority-gate small {
  color: rgba(250, 250, 246, 0.55);
}

.outputs-section {
  padding: clamp(8rem, 12vw, 12rem) var(--page-pad);
  border-top: 1px solid var(--line-dark);
  background: var(--ink);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(15rem, 0.55fr);
  gap: 2rem 7rem;
  max-width: var(--content);
  margin: 0 auto clamp(5rem, 8vw, 8rem);
}

.section-heading .eyebrow,
.section-heading h2 {
  grid-column: 1;
}

.section-heading h2 {
  max-width: 11ch;
}

.section-heading > p:last-child {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: end;
  max-width: 45ch;
  margin: 0;
  color: rgba(250, 250, 246, 0.56);
  line-height: 1.75;
}

.output-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: var(--content);
  margin: 0 auto;
  border-top: 1px solid var(--line-dark);
}

.output-list article {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0.4rem 1rem;
  padding: clamp(2rem, 4vw, 3.5rem) clamp(1rem, 3vw, 3rem);
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.output-list article:nth-child(even) {
  border-right: 0;
}

.output-list span {
  grid-row: 1 / span 2;
  color: rgba(250, 250, 246, 0.34);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.output-list h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.8rem, 2.8vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1;
}

.output-list p {
  max-width: 52ch;
  margin: 0.7rem 0 0;
  color: rgba(250, 250, 246, 0.52);
  font-size: 0.9rem;
}

.evidence-section {
  padding: clamp(8rem, 12vw, 12rem) var(--page-pad);
  background: var(--paper);
  color: var(--ink);
}

.evidence-intro {
  max-width: 67rem;
}

.evidence-intro h2 {
  max-width: 14ch;
}

.evidence-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  max-width: var(--content);
  margin: clamp(5rem, 8vw, 8rem) auto 0;
  background: var(--line-light);
  border: 1px solid var(--line-light);
}

.evidence-grid article {
  min-height: 21rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  background: var(--paper);
}

.status-mark {
  display: inline-flex;
  padding: 0.3rem 0.45rem;
  border: 1px solid currentColor;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-released {
  color: #345d08;
}

.status-merged {
  color: #755700;
}

.status-missing {
  color: #8a2d1d;
}

.evidence-grid h3 {
  max-width: 12ch;
  margin: 4rem 0 0;
  font-family: var(--serif);
  font-size: clamp(2rem, 3vw, 3.2rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.evidence-grid p {
  max-width: 48ch;
  margin: 1.2rem 0 0;
  color: rgba(10, 10, 10, 0.59);
  font-size: 0.9rem;
  line-height: 1.7;
}

.evidence-links {
  display: grid;
  max-width: var(--content);
  margin: 4rem auto 0;
  border-top: 1px solid var(--line-light);
}

.evidence-links a {
  display: grid;
  grid-template-columns: minmax(12rem, 0.35fr) 1fr auto;
  gap: 1rem 2rem;
  padding: 1.35rem 0;
  align-items: center;
  border-bottom: 1px solid var(--line-light);
  text-decoration: none;
}

.evidence-links a::after {
  content: "↗";
  transition: transform 180ms ease;
}

.evidence-links a:hover::after {
  transform: translate(3px, -3px);
}

.evidence-links span {
  color: rgba(10, 10, 10, 0.46);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.evidence-links strong {
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  font-weight: 400;
}

.start-section {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(26rem, 1fr);
  gap: clamp(4rem, 9vw, 10rem);
  padding: clamp(8rem, 12vw, 12rem) var(--page-pad);
  border-top: 1px solid var(--line-dark);
  background:
    radial-gradient(circle at 86% 8%, rgba(255, 255, 255, 0.09), transparent 26%),
    var(--ink);
}

.start-copy h2 {
  max-width: 11ch;
}

.start-copy > p:not(.eyebrow) {
  color: rgba(250, 250, 246, 0.58);
}

.start-terminal {
  align-self: center;
  border: 1px solid var(--line-dark);
  background: rgba(255, 255, 255, 0.025);
  box-shadow: 0 2rem 7rem rgba(0, 0, 0, 0.24);
}

.terminal-topline {
  display: flex;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line-dark);
  color: rgba(250, 250, 246, 0.43);
  font-family: var(--mono);
  font-size: 0.63rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.terminal-command {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  min-height: 7rem;
  padding: 1.25rem;
  align-items: center;
}

.terminal-command > span {
  color: var(--accent);
  font-family: var(--mono);
}

.terminal-command code {
  overflow-x: auto;
  color: var(--paper-bright);
  font-family: var(--mono);
  font-size: clamp(0.84rem, 1.6vw, 1.1rem);
  white-space: nowrap;
}

.copy-button {
  min-width: 4.5rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  color: var(--paper-bright);
  cursor: pointer;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition:
    background-color 180ms ease,
    color 180ms ease;
}

.copy-button:hover {
  background: var(--paper-bright);
  color: var(--ink);
}

.start-note {
  margin: 0;
  padding: 1.5rem;
  border-top: 1px solid var(--line-dark);
  color: rgba(250, 250, 246, 0.5);
  font-size: 0.85rem;
  line-height: 1.7;
}

.start-links {
  display: grid;
  border-top: 1px solid var(--line-dark);
}

.start-links a {
  display: flex;
  padding: 1rem 1.5rem;
  justify-content: space-between;
  border-bottom: 1px solid var(--line-dark);
  color: rgba(250, 250, 246, 0.75);
  font-size: 0.8rem;
  font-weight: 700;
  text-decoration: none;
}

.start-links a:last-child {
  border-bottom: 0;
}

.start-links a::after {
  content: "↗";
}

.start-links a:hover {
  color: var(--paper-bright);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 2rem;
  padding: 3rem var(--page-pad);
  align-items: end;
  border-top: 1px solid var(--line-dark);
  background: var(--ink);
}

.footer-brand {
  margin-bottom: 0.8rem;
}

.site-footer p {
  margin: 0;
  color: rgba(250, 250, 246, 0.42);
  font-family: var(--serif);
  font-size: 1rem;
}

.site-footer nav {
  display: flex;
  gap: 1.4rem;
  flex-wrap: wrap;
  justify-content: center;
}

.site-footer nav a,
.footer-version {
  color: rgba(250, 250, 246, 0.48);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-footer nav a:hover {
  color: var(--paper-bright);
}

.footer-version {
  font-family: var(--mono);
}

.copy-toast {
  position: fixed;
  z-index: 60;
  right: 1rem;
  bottom: 1rem;
  max-width: calc(100vw - 2rem);
  padding: 0.85rem 1rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 0.78rem;
  font-weight: 800;
  opacity: 0;
  pointer-events: none;
  transform: translateY(1rem);
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.copy-toast.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.not-found {
  min-height: 100dvh;
  padding: var(--page-pad);
  background:
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.17), transparent 24%),
    var(--ink);
}

.not-found-layout {
  display: grid;
  grid-template-columns: 1fr minmax(16rem, 0.8fr);
  gap: 4rem;
  min-height: calc(100dvh - 2 * var(--page-pad));
  align-items: center;
}

.not-found-copy h1 {
  max-width: 10ch;
  font-size: clamp(4rem, 9vw, 9rem);
}

.not-found-copy > p:not(.eyebrow) {
  max-width: 48ch;
  color: rgba(250, 250, 246, 0.58);
}

.not-found-mark {
  color: rgba(255, 255, 255, 0.08);
  font-family: var(--serif);
  font-size: clamp(12rem, 31vw, 32rem);
  line-height: 0.8;
  text-align: center;
}

@media (max-width: 1080px) {
  .site-nav {
    gap: 1rem;
  }

  .hero-copy {
    width: min(48rem, 75vw);
  }

  .hero-status {
    display: none;
  }

  .story-layout {
    grid-template-columns: minmax(0, 0.9fr) minmax(24rem, 1.1fr);
  }

  .authority-section,
  .start-section {
    grid-template-columns: 1fr;
  }

  .authority-copy,
  .start-copy {
    max-width: 58rem;
  }

  .authority-map {
    margin-top: 2rem;
  }
}

@media (max-width: 820px) {
  :root {
    --header-height: 4.4rem;
  }

  .site-header {
    grid-template-columns: auto 1fr;
  }

  .site-nav {
    display: none;
  }

  .header-action {
    justify-self: end;
  }

  .hero {
    align-content: end;
    padding-bottom: 8rem;
  }

  .hero-copy {
    width: 100%;
    margin: 0;
  }

  .hero h1 {
    max-width: 10ch;
    font-size: clamp(3.5rem, 11.5vw, 6rem);
  }

  .problem-section {
    grid-template-columns: 1fr;
  }

  .section-index {
    display: none;
  }

  .margin-note {
    max-width: 30rem;
  }

  .story-heading,
  .section-heading {
    grid-template-columns: 1fr;
  }

  .story-heading .eyebrow,
  .story-heading h2,
  .story-heading > p:last-child,
  .section-heading .eyebrow,
  .section-heading h2,
  .section-heading > p:last-child {
    grid-column: 1;
    grid-row: auto;
  }

  .story-layout {
    display: block;
  }

  .story-visual {
    z-index: 0;
    top: var(--header-height);
    height: 48dvh;
    min-height: 19rem;
    border-right: 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .story-steps {
    position: relative;
    z-index: 1;
  }

  .story-step {
    min-height: auto;
    padding: clamp(5rem, 16vw, 8rem) var(--page-pad);
    background: rgba(8, 8, 8, 0.91);
    backdrop-filter: blur(12px);
  }

  .canvas-ready .story-step article {
    opacity: 1;
    transform: none;
  }

  .story-step.paper-step {
    padding: clamp(3rem, 10vw, 5rem) var(--page-pad);
  }

  .authority-map {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .authority-map > i {
    width: 1px;
    height: 1.6rem;
    margin-left: 1.5rem;
  }

  .authority-map > div,
  .authority-map .authority-gate {
    min-height: 8rem;
    transform: none;
  }

  .output-list {
    grid-template-columns: 1fr;
  }

  .output-list article,
  .output-list article:nth-child(even) {
    border-right: 0;
  }

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

  .evidence-grid article {
    min-height: 17rem;
  }

  .evidence-grid h3 {
    margin-top: 2.8rem;
  }

  .site-footer {
    grid-template-columns: 1fr;
  }

  .site-footer nav {
    justify-content: flex-start;
  }

  .not-found-layout {
    grid-template-columns: 1fr;
  }

  .not-found-mark {
    display: none;
  }
}

@media (max-width: 560px) {
  .hero {
    min-height: 100svh;
    padding-top: calc(var(--header-height) + 2rem);
  }

  .hero::after {
    background:
      linear-gradient(0deg, rgba(0, 0, 0, 0.92) 0%, rgba(0, 0, 0, 0.4) 68%, transparent),
      linear-gradient(90deg, rgba(0, 0, 0, 0.28), transparent);
  }

  .hero h1 {
    font-size: clamp(3.2rem, 16vw, 5rem);
  }

  .hero-summary {
    font-size: 0.96rem;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .scroll-cue {
    display: none;
  }

  .problem-section,
  .story-heading,
  .authority-section,
  .outputs-section,
  .evidence-section,
  .start-section {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }

  .section-copy h2,
  .story-heading h2,
  .authority-copy h2,
  .section-heading h2,
  .evidence-intro h2,
  .start-copy h2 {
    font-size: clamp(3rem, 14.5vw, 4.4rem);
  }

  .story-step {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }

  .story-step h3 {
    font-size: clamp(2.45rem, 12vw, 3.8rem);
  }

  .evidence-links a {
    grid-template-columns: 1fr auto;
  }

  .evidence-links span {
    grid-column: 1;
  }

  .evidence-links strong {
    grid-column: 1;
  }

  .evidence-links a::after {
    grid-column: 2;
    grid-row: 1 / span 2;
  }

  .terminal-command {
    grid-template-columns: auto 1fr;
  }

  .copy-button {
    grid-column: 1 / -1;
    justify-self: start;
  }

  .site-footer {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }
}

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

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

  .paper-flow {
    transform: scale(1.1);
  }

  .canvas-ready .story-step article {
    opacity: 1;
    transform: none;
  }
}

@media (forced-colors: active) {
  .paper-flow,
  .hero-grain,
  .particle-field,
  .story-field {
    display: none;
  }

  .canvas-ready .particle-label,
  .particle-label {
    position: static;
    display: block;
    margin-top: 2rem;
    color: CanvasText;
    font-size: 4rem;
    transform: none;
  }

  .hero::after {
    display: none;
  }

  .button,
  .header-action,
  .copy-button,
  .status-mark {
    border: 2px solid ButtonText;
  }
}

/* The supplied paper-flow experience is the visual source of truth for the opening. */
.source-visual-shell {
  position: fixed;
  z-index: 0;
  inset: 0;
  overflow: hidden;
  background: #181818;
  pointer-events: none;
}

.source-visual-frame {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 600ms ease;
}

.source-visual-shell.is-ready .source-visual-frame {
  opacity: 1;
}

.source-visual-fallback {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.65rem, 2.2vw, 2rem);
  overflow: hidden;
  background:
    radial-gradient(ellipse 42% 70% at 18% 14%, rgba(255, 255, 255, 0.78), transparent 68%),
    radial-gradient(ellipse 48% 28% at 49% 53%, rgba(255, 255, 255, 0.42), transparent 72%),
    radial-gradient(ellipse 45% 65% at 86% 86%, rgba(0, 0, 0, 0.88), transparent 72%),
    linear-gradient(135deg, #292929 0%, #666 46%, #171717 100%);
  transition: opacity 420ms ease;
}

.source-visual-fallback::before {
  position: absolute;
  inset: -18%;
  content: "";
  background:
    conic-gradient(
      from 214deg at 51% 52%,
      transparent 0 16%,
      rgba(255, 255, 255, 0.68) 22%,
      rgba(255, 255, 255, 0.06) 29%,
      transparent 36% 100%
    );
  filter: blur(34px);
  transform: rotate(-7deg);
}

.source-visual-shell.is-ready .source-visual-fallback {
  opacity: 0;
}

.fallback-letter {
  position: relative;
  z-index: 1;
  display: block;
  color: #fff;
  font-family: var(--sans);
  font-size: clamp(5rem, 14vw, 12rem);
  font-weight: 900;
  line-height: 0.75;
  letter-spacing: -0.12em;
  text-shadow:
    0 0 1px #fff,
    0 0 12px rgba(255, 255, 255, 0.38);
}

.fallback-rings {
  position: relative;
  z-index: 1;
  display: block;
  width: clamp(5.6rem, 12vw, 10rem);
  aspect-ratio: 1;
}

.fallback-rings i {
  position: absolute;
  top: 50%;
  width: 62%;
  aspect-ratio: 1;
  border: clamp(0.35rem, 0.75vw, 0.8rem) dotted rgba(255, 255, 255, 0.72);
  border-radius: 50%;
  transform: translateY(-50%) rotateY(52deg);
}

.fallback-rings i:first-child {
  left: 0;
}

.fallback-rings i:last-child {
  right: 0;
  transform: translateY(-50%) rotateY(-52deg);
}

main {
  position: relative;
  z-index: 1;
}

.site-header {
  min-height: 4.75rem;
  padding-right: clamp(1.5rem, 3vw, 3rem);
  padding-left: clamp(1.5rem, 3vw, 3rem);
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.9);
}

.site-header:not(.is-scrolled) {
  background: transparent;
}

.site-nav {
  transition:
    opacity 220ms ease,
    transform 220ms ease,
    visibility 220ms ease;
}

.site-header:not(.is-scrolled) .site-nav {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-0.5rem);
}

.brand-mark {
  width: auto;
  height: auto;
  border: 0;
  font-size: 1.45rem;
  transform: none;
}

.hero {
  min-height: 100svh;
  padding: 0;
  align-content: normal;
  background: transparent;
  isolation: auto;
}

.hero::after {
  display: none;
}

.hero-copy {
  position: absolute;
  z-index: 4;
  top: 57.5%;
  left: 50%;
  width: min(68rem, calc(100% - 3rem));
  margin: 0;
  text-align: center;
  transform: translateX(-50%);
}

.hero-eyebrow {
  margin: 0 0 1rem;
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-shadow:
    0 2px 4px rgba(0, 0, 0, 0.95),
    0 0 1.5rem rgba(0, 0, 0, 0.95);
  text-transform: uppercase;
}

.hero h1 {
  max-width: none;
  font-size: clamp(2.55rem, 4.25vw, 4.9rem);
  letter-spacing: -0.045em;
  line-height: 1;
  text-shadow:
    0 2px 4px rgba(0, 0, 0, 0.9),
    0 0 3rem rgba(0, 0, 0, 0.72);
}

.hero-summary {
  max-width: 44rem;
  margin: 1.35rem auto 0;
  color: rgba(245, 245, 245, 0.82);
  font-size: clamp(0.95rem, 1.3vw, 1.2rem);
  line-height: 1.55;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.95);
}

.hero-actions {
  justify-content: center;
  margin-top: 1.8rem;
}

.hero .button-light {
  min-width: 12.5rem;
  border-color: rgba(255, 255, 255, 0.36);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  box-shadow: 0 1rem 3.5rem rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(10px);
}

.hero .button-light:hover {
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.2);
}

.scroll-cue {
  right: auto;
  bottom: 1.75rem;
  left: 50%;
  flex-direction: row-reverse;
  transform: translateX(-50%);
}

.control-strip {
  position: relative;
  z-index: 5;
  padding: clamp(3.5rem, 6vw, 6rem) var(--page-pad) clamp(4rem, 7vw, 7rem);
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(7, 7, 7, 0.97);
  color: var(--paper-bright);
}

.control-intro {
  display: grid;
  grid-template-columns: minmax(10rem, 0.55fr) minmax(20rem, 1.35fr) minmax(16rem, 0.7fr);
  gap: clamp(2rem, 5vw, 6rem);
  max-width: var(--content);
  margin: 0 auto clamp(2.5rem, 4vw, 4rem);
  align-items: start;
}

.control-intro .eyebrow,
.control-intro h2,
.control-intro > p:last-child {
  margin-top: 0;
}

.control-intro h2 {
  max-width: 15ch;
  font-family: var(--serif);
  font-size: clamp(2.8rem, 4.2vw, 4.9rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 0.94;
  text-wrap: balance;
}

.control-intro > p:last-child {
  max-width: 37ch;
  color: rgba(250, 250, 246, 0.62);
  line-height: 1.75;
  text-wrap: pretty;
}

.control-loop {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: var(--content);
  margin: 0 auto;
  padding: 0;
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
  list-style: none;
}

.control-loop li {
  display: grid;
  min-height: 15rem;
  padding: clamp(1.4rem, 2.5vw, 2.4rem);
  align-content: space-between;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.control-loop span {
  color: rgba(250, 250, 246, 0.38);
  font-family: var(--mono);
  font-size: 0.68rem;
}

.control-loop strong {
  align-self: end;
  font-family: var(--serif);
  font-size: clamp(2rem, 3vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
}

.control-loop small {
  max-width: 17ch;
  color: rgba(250, 250, 246, 0.56);
  font-size: 0.76rem;
  line-height: 1.5;
}

.control-loop .control-gate {
  background: var(--paper);
  color: var(--ink);
  transform: translateY(-1.25rem);
}

.control-loop .control-gate span,
.control-loop .control-gate small {
  color: rgba(10, 10, 10, 0.56);
}

.control-notes {
  display: flex;
  gap: 1rem 2.5rem;
  max-width: var(--content);
  margin: 2.2rem auto 0;
  flex-wrap: wrap;
  color: rgba(250, 250, 246, 0.54);
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.control-notes span {
  display: inline-flex;
  gap: 0.7rem;
  align-items: center;
}

.control-notes span:not(:last-child)::after {
  width: 2rem;
  height: 1px;
  margin-left: 1.5rem;
  content: "";
  background: rgba(255, 255, 255, 0.24);
}

.control-notes code {
  font-family: var(--mono);
  font-size: 0.92em;
  text-transform: none;
}

.story-section {
  background: rgba(5, 5, 5, 0.34);
  backdrop-filter: blur(2px);
}

.story-visual {
  border-right-color: rgba(255, 255, 255, 0.1);
  background: transparent;
}

.story-visual::before,
.story-visual::after,
.story-visual-word,
.story-field {
  display: none;
}

.story-step:not(.paper-step) {
  background: rgba(4, 4, 4, 0.3);
}

.story-heading,
.story-step:not(.paper-step) article {
  text-shadow: 0 2px 22px rgba(0, 0, 0, 0.92);
}

@media (max-width: 860px) {
  .site-header {
    grid-template-columns: auto 1fr;
  }

  .site-nav {
    display: none;
  }

  .hero-copy {
    top: 56%;
    width: min(42rem, calc(100% - 2.5rem));
  }

  .hero h1 {
    font-size: clamp(2.4rem, 8vw, 4rem);
  }

  .control-intro {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .control-intro h2 {
    max-width: 13ch;
  }

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

  .control-loop .control-gate {
    transform: none;
  }

  .story-visual {
    display: none;
  }

  .story-layout {
    display: block;
  }
}

@media (max-width: 560px) {
  .site-header {
    min-height: 4rem;
    padding: 0 1.25rem;
  }

  .hero-copy {
    top: 52.5%;
    width: calc(100% - 2.5rem);
  }

  .hero-eyebrow {
    margin-bottom: 0.75rem;
    font-size: 0.61rem;
  }

  .hero h1 {
    font-size: clamp(2.45rem, 11.5vw, 3.5rem);
    line-height: 0.96;
  }

  .hero-summary {
    max-width: 31rem;
    margin-top: 1rem;
    font-size: 0.94rem;
  }

  .hero-actions {
    align-items: center;
    margin-top: 1.35rem;
  }

  .hero .button-light {
    min-height: 2.85rem;
    min-width: 10.5rem;
  }

  .control-strip {
    padding-right: 1.25rem;
    padding-left: 1.25rem;
  }

  .control-intro h2 {
    font-size: clamp(3rem, 14.5vw, 4.4rem);
  }

  .control-loop li {
    min-height: 12rem;
    padding: 1.25rem;
  }

  .control-loop strong {
    font-size: clamp(1.75rem, 8vw, 2.5rem);
  }

  .control-notes {
    display: grid;
    gap: 0.65rem;
  }

  .control-notes span:not(:last-child)::after {
    display: none;
  }

  .scroll-cue {
    display: inline-flex;
    bottom: 1.15rem;
    white-space: nowrap;
  }

  .fallback-letter {
    font-size: clamp(4.5rem, 24vw, 8rem);
  }

  .source-visual-fallback {
    gap: clamp(0.35rem, 2vw, 0.8rem);
    background:
      radial-gradient(ellipse 95% 42% at 80% 43%, rgba(255, 255, 255, 0.92), transparent 46%),
      radial-gradient(ellipse 75% 55% at 22% 11%, rgba(255, 255, 255, 0.18), transparent 68%),
      radial-gradient(ellipse 85% 58% at 21% 78%, rgba(0, 0, 0, 0.94), transparent 70%),
      linear-gradient(150deg, #303030 0%, #111 58%, #777 100%);
  }

  .fallback-rings {
    width: clamp(4.4rem, 21vw, 7rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .source-visual-frame {
    display: none;
  }

  .source-visual-shell.is-ready .source-visual-fallback {
    opacity: 1;
  }
}

@media (forced-colors: active) {
  .source-visual-shell {
    display: none;
  }

  .hero {
    background: Canvas;
    color: CanvasText;
  }
}