:root {
  --ink: #07110f;
  --ink-soft: #10211d;
  --paper: #f1f0e9;
  --paper-bright: #faf9f4;
  --line: rgba(7, 17, 15, 0.17);
  --line-dark: rgba(244, 246, 237, 0.17);
  --acid: #d8ff63;
  --acid-dark: #b6dc39;
  --mint: #8be6c2;
  --blue: #75a6ff;
  --muted: #65726d;
  --max-width: 1440px;
  --gutter: clamp(1.25rem, 4vw, 4.5rem);
  --section-space: clamp(6rem, 11vw, 11rem);
  --display: "Arial Narrow", "Aptos Display", "Helvetica Neue", Arial, sans-serif;
  --body: Inter, "Helvetica Neue", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: 20;
  inset: 0;
  pointer-events: none;
  opacity: 0.035;
  content: "";
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.78' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.9'/%3E%3C/svg%3E");
}

a {
  color: inherit;
  text-decoration: none;
}

svg {
  display: block;
}

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

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.8rem 1rem;
  color: var(--ink);
  background: var(--acid);
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 50%;
  display: grid;
  width: min(100%, var(--max-width));
  height: 6.5rem;
  padding: 0 var(--gutter);
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  color: var(--paper-bright);
  border-bottom: 1px solid var(--line-dark);
  transform: translateX(-50%);
}

.site-header.is-stuck {
  position: fixed;
  height: 4.75rem;
  background: rgba(7, 17, 15, 0.82);
  -webkit-backdrop-filter: blur(18px);
  backdrop-filter: blur(18px);
  animation: headerIn 320ms ease both;
}

.scroll-progress {
  position: fixed;
  z-index: 30;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  pointer-events: none;
  background: var(--acid);
  transform: scaleX(0);
  transform-origin: left;
}

.wordmark {
  display: inline-flex;
  width: max-content;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.34em;
}

.wordmark svg {
  width: 2rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.wordmark svg circle:not(:first-of-type) {
  fill: currentColor;
  stroke: none;
}

.site-header nav {
  display: flex;
  align-items: center;
  gap: clamp(1.4rem, 3vw, 3.25rem);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
}

.site-header nav a {
  position: relative;
  opacity: 0.72;
  transition: opacity 180ms ease;
}

.site-header nav a::after {
  position: absolute;
  right: 0;
  bottom: -0.45rem;
  left: 0;
  height: 1px;
  content: "";
  background: var(--acid);
  transform: scaleX(0);
  transition: transform 180ms ease;
  transform-origin: right;
}

.site-header nav a:hover,
.site-header nav a:focus-visible {
  opacity: 1;
}

.site-header nav a:hover::after,
.site-header nav a:focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-cta {
  display: flex;
  justify-self: end;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.78rem;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.header-cta span {
  color: var(--acid);
}

.hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  overflow: hidden;
  padding: clamp(9rem, 15vh, 12rem) var(--gutter) 2rem;
  color: var(--paper-bright);
  background:
    linear-gradient(115deg, rgba(17, 44, 36, 0.48), transparent 48%),
    var(--ink);
  grid-template-columns: minmax(0, 1.05fr) minmax(28rem, 0.95fr);
  grid-template-rows: 1fr auto;
  column-gap: clamp(2rem, 5vw, 7rem);
}

.neural-field {
  position: absolute;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.42;
  mix-blend-mode: screen;
}

.hero::before {
  position: absolute;
  top: -20%;
  right: -10%;
  width: min(60vw, 60rem);
  height: min(60vw, 60rem);
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgba(86, 186, 147, 0.09), transparent 65%);
}

.hero::after {
  position: absolute;
  top: 0;
  bottom: 0;
  left: max(55%, calc(50% + 8rem));
  width: 1px;
  content: "";
  background: linear-gradient(transparent 8%, var(--line-dark) 30%, var(--line-dark) 75%, transparent);
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: 53rem;
  align-self: center;
}

.eyebrow {
  display: flex;
  margin: 0 0 2rem;
  align-items: center;
  gap: 0.8rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  line-height: 1.2;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.status-dot {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0.85rem rgba(216, 255, 99, 0.65);
}

.hero h1 {
  max-width: 11ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(4rem, 7.7vw, 8.9rem);
  font-weight: 570;
  line-height: 0.87;
  letter-spacing: -0.065em;
}

.hero h1 span {
  display: block;
  color: var(--acid);
}

.hero-lede {
  max-width: 42rem;
  margin: clamp(2rem, 4vh, 3.25rem) 0 0;
  color: rgba(250, 249, 244, 0.72);
  font-size: clamp(1.05rem, 1.35vw, 1.34rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  margin-top: 2.5rem;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.button {
  display: inline-flex;
  min-height: 3.5rem;
  padding: 0.95rem 1.25rem;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  border: 1px solid transparent;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  transition:
    background-color 180ms ease,
    color 180ms ease,
    border-color 180ms ease,
    transform 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

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

.button-primary:hover,
.button-primary:focus-visible {
  background: #e5ff92;
}

.button-quiet {
  color: var(--paper-bright);
  border-color: var(--line-dark);
}

.button-quiet:hover,
.button-quiet:focus-visible {
  border-color: rgba(250, 249, 244, 0.6);
}

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

.hero-visual {
  position: relative;
  z-index: 1;
  width: min(100%, 43rem);
  justify-self: end;
  align-self: center;
}

.network-map {
  width: 100%;
  overflow: visible;
}

.visual-orbit {
  fill: none;
  stroke: rgba(244, 246, 237, 0.11);
  stroke-width: 1;
  stroke-dasharray: 4 10;
  transform-box: fill-box;
  transform-origin: center;
}

.orbit-one {
  animation: orbit 45s linear infinite;
}

.orbit-two {
  stroke-dasharray: 2 7;
  animation: orbit 35s linear infinite reverse;
}

.connections path {
  fill: none;
  stroke: rgba(139, 230, 194, 0.21);
  stroke-width: 1.4;
}

.signal-lines path {
  fill: none;
  stroke: var(--acid);
  stroke-width: 2;
  stroke-dasharray: 0.08 0.92;
  stroke-linecap: round;
  filter: url("#softGlow");
  animation: signal 4.5s linear infinite;
}

.signal-lines path:last-child {
  animation-delay: -2.2s;
}

.node-biological {
  fill: none;
  stroke: var(--acid);
  stroke-width: 1.5;
  filter: url("#softGlow");
}

.node-halo {
  stroke: rgba(216, 255, 99, 0.16);
  stroke-dasharray: 3 8;
  animation: orbit 20s linear infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.node-ring {
  fill: rgba(216, 255, 99, 0.03);
  stroke: rgba(216, 255, 99, 0.75);
}

.node-biological circle:not(.node-halo, .node-ring) {
  fill: var(--acid);
}

.endpoint {
  fill: var(--ink);
  stroke: rgba(139, 230, 194, 0.85);
  stroke-width: 2;
}

.endpoint circle,
.endpoint rect {
  animation: pulse 3.2s ease-in-out infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.endpoint:nth-of-type(2n) circle,
.endpoint:nth-of-type(2n) rect {
  animation-delay: -1.6s;
}

.visual-label {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--mono);
  color: rgba(250, 249, 244, 0.68);
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.visual-label span {
  color: var(--acid);
}

.visual-label-top {
  top: 8%;
  left: 3%;
}

.visual-label-bottom {
  right: 2%;
  bottom: 11%;
}

.visual-caption {
  position: absolute;
  bottom: 2%;
  left: 5%;
  margin: 0;
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.visual-caption span {
  display: block;
  margin-top: 0.2rem;
  color: rgba(250, 249, 244, 0.42);
  font-family: var(--mono);
  font-size: 0.6rem;
  font-weight: 400;
}

.hero-foot {
  position: relative;
  z-index: 2;
  display: flex;
  padding-top: 2rem;
  grid-column: 1 / -1;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line-dark);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
}

.hero-foot p {
  margin: 0;
  color: rgba(250, 249, 244, 0.42);
}

.hero-foot a {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hero-foot a span {
  color: var(--acid);
}

.signal-ticker {
  position: relative;
  overflow: hidden;
  padding: 1rem 0;
  color: var(--ink);
  background: var(--acid);
  border-top: 1px solid rgba(7, 17, 15, 0.35);
  border-bottom: 1px solid rgba(7, 17, 15, 0.35);
  font-family: var(--mono);
  font-size: 0.63rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.signal-ticker > div {
  display: flex;
  width: max-content;
  align-items: center;
  gap: 2rem;
  animation: ticker 28s linear infinite;
}

.signal-ticker span {
  white-space: nowrap;
}

.signal-ticker i {
  font-size: 0.9rem;
  font-style: normal;
  font-weight: 400;
}

.section-shell {
  width: min(100%, var(--max-width));
  margin: 0 auto;
  padding: var(--section-space) var(--gutter);
}

.section-index {
  margin: 0 0 clamp(3rem, 6vw, 6rem);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-index-light {
  color: rgba(250, 249, 244, 0.42);
}

.premise-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr);
  gap: clamp(3rem, 8vw, 9rem);
}

.premise h2,
.experiment h2,
.approach h2,
.stage h2,
.questions h2,
.closing h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2.9rem, 5.4vw, 6.5rem);
  font-weight: 550;
  line-height: 0.96;
  letter-spacing: -0.055em;
}

.premise h2 span,
.experiment h2 span {
  color: #76827d;
}

.premise-copy {
  max-width: 34rem;
  padding-top: 0.5rem;
  color: #3e4c47;
  font-size: clamp(1rem, 1.4vw, 1.25rem);
}

.premise-copy p {
  margin: 0 0 1.5rem;
}

.premise-metrics {
  display: grid;
  margin-top: clamp(5rem, 9vw, 9rem);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  grid-template-columns: repeat(3, 1fr);
}

.metric {
  min-height: 13rem;
  padding: 2rem 2rem 2.25rem 0;
}

.metric + .metric {
  padding-left: clamp(1.5rem, 4vw, 4rem);
  border-left: 1px solid var(--line);
}

.metric-value {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(3.5rem, 6vw, 6.5rem);
  font-weight: 550;
  line-height: 1;
  letter-spacing: -0.06em;
}

.metric-label {
  max-width: 13rem;
  margin: 1.2rem 0 0;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.experiment {
  color: var(--paper-bright);
  background: #0d1d19;
}

.experiment-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(18rem, 0.55fr);
  gap: clamp(3rem, 8vw, 9rem);
}

.experiment-intro h2 span {
  color: var(--acid);
}

.experiment-intro > p {
  margin: 0;
  align-self: end;
  color: rgba(250, 249, 244, 0.6);
  font-size: clamp(1rem, 1.3vw, 1.2rem);
}

.experiment-question {
  display: grid;
  margin-top: clamp(5rem, 9vw, 9rem);
  padding: clamp(2rem, 4vw, 4.25rem);
  color: var(--ink);
  background: var(--acid);
  grid-template-columns: 0.45fr 1.55fr;
  gap: 2rem;
}

.question-kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.question-text {
  max-width: 37ch;
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 3.6rem);
  font-weight: 550;
  line-height: 1.06;
  letter-spacing: -0.04em;
}

.study-layout {
  display: grid;
  margin-top: clamp(4rem, 7vw, 7rem);
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.7fr);
  gap: clamp(3rem, 7vw, 8rem);
}

.study-diagram {
  display: grid;
  min-height: 28rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  grid-template-columns: 1fr 0.6fr 1fr 0.6fr 1fr;
  align-items: center;
  border: 1px solid var(--line-dark);
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 24px 24px;
}

.diagram-column {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.diagram-column > p {
  height: 2.5rem;
  margin: 0;
  color: rgba(250, 249, 244, 0.58);
  font-family: var(--mono);
  font-size: 0.59rem;
  line-height: 1.3;
  letter-spacing: 0.05em;
  text-align: center;
  text-transform: uppercase;
}

.diagram-screen {
  display: grid;
  width: clamp(5.5rem, 8vw, 7.5rem);
  aspect-ratio: 1;
  padding: 1.2rem;
  grid-template-columns: repeat(3, 1fr);
  place-items: center;
  border: 1px solid rgba(117, 166, 255, 0.7);
  background: rgba(117, 166, 255, 0.06);
}

.diagram-screen span {
  width: 0.62rem;
  height: 0.62rem;
  border: 1px solid var(--blue);
  border-radius: 50%;
}

.diagram-screen i {
  width: 1px;
  height: 2.5rem;
  background: rgba(117, 166, 255, 0.4);
  transform: rotate(55deg);
}

.diagram-dish {
  position: relative;
  width: clamp(5.5rem, 8vw, 7.5rem);
  aspect-ratio: 1;
  border: 1px solid var(--acid);
  border-radius: 50%;
  background: rgba(216, 255, 99, 0.05);
  box-shadow: inset 0 0 2rem rgba(216, 255, 99, 0.05);
}

.diagram-dish::before,
.diagram-dish::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 70%;
  height: 1px;
  content: "";
  background: rgba(216, 255, 99, 0.28);
  transform: translate(-50%, -50%) rotate(28deg);
}

.diagram-dish::after {
  transform: translate(-50%, -50%) rotate(-38deg);
}

.diagram-dish i {
  position: absolute;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--acid);
  box-shadow: 0 0 0.8rem rgba(216, 255, 99, 0.6);
}

.diagram-dish i:nth-child(1) { top: 20%; left: 32%; }
.diagram-dish i:nth-child(2) { top: 35%; left: 68%; }
.diagram-dish i:nth-child(3) { top: 55%; left: 25%; }
.diagram-dish i:nth-child(4) { top: 70%; left: 60%; }
.diagram-dish i:nth-child(5) { top: 42%; left: 43%; }
.diagram-dish i:nth-child(6) { top: 25%; left: 52%; }

.diagram-shield {
  display: grid;
  width: clamp(5.5rem, 8vw, 7.5rem);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(139, 230, 194, 0.55);
  background: rgba(139, 230, 194, 0.05);
}

.diagram-shield svg {
  width: 52%;
  fill: none;
  stroke: var(--mint);
  stroke-width: 2;
}

.diagram-arrow {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.diagram-arrow span {
  color: rgba(250, 249, 244, 0.35);
  font-family: var(--mono);
  font-size: 0.54rem;
  text-transform: uppercase;
}

.diagram-arrow svg {
  width: 80%;
  fill: none;
  stroke: rgba(250, 249, 244, 0.3);
  stroke-width: 1;
}

.study-details {
  border-top: 1px solid var(--line-dark);
}

.study-details article {
  display: grid;
  padding: 1.8rem 0;
  border-bottom: 1px solid var(--line-dark);
  grid-template-columns: 3rem 1fr;
  gap: 0.75rem;
}

.study-details article > span {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.61rem;
}

.study-details h3 {
  margin: 0 0 0.5rem;
  font-size: 0.92rem;
}

.study-details p {
  margin: 0;
  color: rgba(250, 249, 244, 0.5);
  font-size: 0.82rem;
}

.support-note {
  display: grid;
  margin-top: clamp(4rem, 8vw, 8rem);
  padding: 2rem 0;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: clamp(1.5rem, 4vw, 4rem);
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.support-mark {
  display: grid;
  width: 3.5rem;
  height: 3.5rem;
  place-items: center;
  border: 1px solid rgba(216, 255, 99, 0.5);
  border-radius: 50%;
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.69rem;
}

.support-note p {
  margin: 0;
  color: rgba(250, 249, 244, 0.57);
  font-size: 0.82rem;
}

.support-note p strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--paper-bright);
}

.support-note > span {
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.approach-heading {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: clamp(3rem, 8vw, 9rem);
}

.approach-heading p {
  max-width: 29rem;
  margin: 0;
  align-self: end;
  color: var(--muted);
  font-size: 1rem;
}

.steps {
  display: grid;
  margin: clamp(4rem, 8vw, 8rem) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  list-style: none;
  grid-template-columns: repeat(4, 1fr);
}

.step {
  min-height: 27rem;
  padding: 1.5rem clamp(1rem, 2.5vw, 2.5rem) 2.25rem;
}

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

.step + .step {
  border-left: 1px solid var(--line);
}

.step-number {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.62rem;
}

.step-icon {
  display: grid;
  height: 12rem;
  place-items: center;
}

.step-icon svg {
  width: 4.25rem;
  fill: none;
  stroke: var(--ink);
  stroke-width: 1.5;
}

.step h3 {
  margin: 0 0 0.6rem;
  font-family: var(--display);
  font-size: 2.2rem;
  font-weight: 550;
  letter-spacing: -0.04em;
}

.step p {
  max-width: 15rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.stage {
  color: var(--paper-bright);
  background: #142621;
}

.stage-grid {
  display: grid;
  grid-template-columns: 1fr 0.75fr;
  gap: clamp(4rem, 9vw, 10rem);
}

.stage h2 {
  position: sticky;
  top: 8rem;
  max-width: 11ch;
}

.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  position: absolute;
  top: 1rem;
  bottom: 1rem;
  left: 0.3rem;
  width: 1px;
  content: "";
  background: var(--line-dark);
}

.timeline-item {
  position: relative;
  padding: 0 0 3.75rem 1.5rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-marker {
  position: absolute;
  top: 0.4rem;
  left: -2.1rem;
  width: 0.85rem;
  height: 0.85rem;
  border: 1px solid rgba(250, 249, 244, 0.4);
  border-radius: 50%;
  background: #142621;
}

.is-complete .timeline-marker {
  border-color: var(--mint);
  background: var(--mint);
}

.is-active .timeline-marker {
  border-color: var(--acid);
  box-shadow: 0 0 0 0.35rem rgba(216, 255, 99, 0.1);
}

.timeline-status {
  margin: 0 0 0.5rem;
  color: var(--acid);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.timeline h3 {
  margin: 0 0 0.4rem;
  font-size: 1rem;
}

.timeline-item > div > p:last-child {
  margin: 0;
  color: rgba(250, 249, 244, 0.48);
  font-size: 0.82rem;
}

.questions-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: clamp(4rem, 10vw, 11rem);
}

.questions h2 {
  max-width: 10ch;
}

.questions-intro {
  max-width: 29rem;
  margin: 2rem 0 0;
  color: var(--muted);
}

.faq {
  border-top: 1px solid var(--line);
}

.faq details {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  position: relative;
  padding: 1.7rem 3rem 1.7rem 0;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 650;
  list-style: none;
}

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

.faq summary span,
.faq summary span::after {
  position: absolute;
  top: 50%;
  right: 0.35rem;
  width: 0.9rem;
  height: 1px;
  content: "";
  background: var(--ink);
  transition: transform 180ms ease;
}

.faq summary span::after {
  top: 0;
  right: 0;
  transform: rotate(90deg);
}

.faq details[open] summary span {
  transform: rotate(45deg);
}

.faq details p {
  max-width: 44rem;
  margin: 0;
  padding: 0 3rem 1.75rem 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.founder {
  padding-top: 0;
}

.founder-card {
  display: grid;
  padding: clamp(2rem, 5vw, 5rem);
  color: var(--paper-bright);
  background: var(--blue);
  grid-template-columns: auto 1.15fr 0.85fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
}

.founder-monogram {
  display: grid;
  width: clamp(6rem, 10vw, 10rem);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(7, 17, 15, 0.25);
  border-radius: 50%;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 3rem);
}

.founder-copy .section-index {
  margin-bottom: 1.1rem;
  color: rgba(7, 17, 15, 0.55);
}

.founder-copy h2 {
  margin: 0;
  color: var(--ink);
  font-family: var(--display);
  font-size: clamp(2.5rem, 4vw, 4.5rem);
  font-weight: 550;
  line-height: 1;
  letter-spacing: -0.05em;
}

.founder-copy > p:last-child {
  max-width: 34rem;
  margin: 1rem 0 0;
  color: rgba(7, 17, 15, 0.67);
  font-size: 0.88rem;
}

.founder-callout {
  padding-left: clamp(1rem, 4vw, 4rem);
  border-left: 1px solid rgba(7, 17, 15, 0.2);
}

.founder-callout p {
  max-width: 19rem;
  margin: 0 0 1.5rem;
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 620;
}

.closing {
  color: var(--paper-bright);
  background: var(--ink);
}

.closing-inner {
  padding-top: clamp(6rem, 10vw, 10rem);
  padding-bottom: clamp(6rem, 10vw, 10rem);
}

.closing h2 {
  max-width: 13ch;
  font-size: clamp(3.4rem, 7vw, 8rem);
}

.closing-actions {
  display: flex;
  margin-top: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
  gap: 2rem;
}

.email-link {
  color: rgba(250, 249, 244, 0.62);
  font-size: 0.79rem;
  border-bottom: 1px solid var(--line-dark);
}

.site-footer {
  display: grid;
  width: min(100%, var(--max-width));
  min-height: 10rem;
  margin: 0 auto;
  padding: 2.5rem var(--gutter);
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  color: var(--paper-bright);
  background: var(--ink);
  border-top: 1px solid var(--line-dark);
}

.wordmark-footer {
  color: var(--paper-bright);
}

.site-footer > p {
  margin: 0;
  color: rgba(250, 249, 244, 0.42);
  font-size: 0.68rem;
  text-align: center;
}

.site-footer > div {
  display: flex;
  justify-self: end;
  gap: 1.5rem;
  color: rgba(250, 249, 244, 0.42);
  font-family: var(--mono);
  font-size: 0.58rem;
}

.reveal {
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity 700ms cubic-bezier(0.2, 0.7, 0.2, 1),
    transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

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

.reveal:nth-child(2) {
  transition-delay: 80ms;
}

.reveal:nth-child(3) {
  transition-delay: 140ms;
}

.reveal:nth-child(4) {
  transition-delay: 200ms;
}

@keyframes orbit {
  to { transform: rotate(360deg); }
}

@keyframes signal {
  from { stroke-dashoffset: 1; }
  to { stroke-dashoffset: 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: scale(0.88); }
  50% { opacity: 1; transform: scale(1.2); }
}

@keyframes ticker {
  to { transform: translateX(-50%); }
}

@keyframes headerIn {
  from { transform: translate(-50%, -100%); }
  to { transform: translate(-50%, 0); }
}

@media (max-width: 1050px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .site-header nav {
    display: none;
  }

  .hero {
    min-height: auto;
    padding-top: 10rem;
    grid-template-columns: 1fr 0.8fr;
  }

  .hero h1 {
    font-size: clamp(4rem, 9vw, 7rem);
  }

  .study-layout {
    grid-template-columns: 1fr;
  }

  .study-details {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .study-details article {
    padding: 1.6rem 1.5rem;
    grid-template-columns: 2rem 1fr;
    border-bottom: 0;
    border-top: 1px solid var(--line-dark);
  }

  .study-details article + article {
    border-left: 1px solid var(--line-dark);
  }

  .support-note {
    grid-template-columns: auto 1fr;
  }

  .support-note > span {
    grid-column: 2;
  }

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

  .step:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .step:nth-child(4) {
    border-top: 1px solid var(--line);
  }

  .founder-card {
    grid-template-columns: auto 1fr;
  }

  .founder-callout {
    padding: 2rem 0 0;
    grid-column: 1 / -1;
    border-top: 1px solid rgba(7, 17, 15, 0.2);
    border-left: 0;
  }
}

@media (max-width: 760px) {
  :root {
    --gutter: 1.2rem;
    --section-space: 5.5rem;
  }

  .site-header {
    height: 5rem;
  }

  .wordmark {
    font-size: 0.68rem;
  }

  .wordmark svg {
    width: 1.7rem;
  }

  .header-cta {
    font-size: 0;
  }

  .header-cta span {
    font-size: 1.1rem;
  }

  .hero {
    display: block;
    padding-top: 8.25rem;
  }

  .hero::after {
    display: none;
  }

  .hero h1 {
    font-size: clamp(3.6rem, 16vw, 5.2rem);
  }

  .hero-lede {
    font-size: 1rem;
  }

  .hero-visual {
    width: min(100%, 31rem);
    margin: 3rem auto 2rem;
  }

  .hero-foot {
    gap: 1.5rem;
  }

  .hero-foot p {
    max-width: 12rem;
  }

  .hero-foot a {
    text-align: right;
  }

  .premise-grid,
  .experiment-intro,
  .approach-heading,
  .stage-grid,
  .questions-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .premise h2,
  .experiment h2,
  .approach h2,
  .stage h2,
  .questions h2 {
    font-size: clamp(2.7rem, 13vw, 4rem);
  }

  .premise-metrics {
    grid-template-columns: 1fr;
  }

  .metric {
    display: grid;
    min-height: 0;
    padding: 1.75rem 0;
    grid-template-columns: 0.55fr 1fr;
    align-items: center;
  }

  .metric + .metric {
    padding-left: 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .metric-value {
    font-size: 3.4rem;
  }

  .metric-label {
    margin: 0;
  }

  .experiment-question {
    grid-template-columns: 1fr;
  }

  .study-diagram {
    min-height: 20rem;
    padding: 1.25rem 0.75rem;
    grid-template-columns: 1fr 0.45fr 1fr 0.45fr 1fr;
  }

  .diagram-column > p {
    font-size: 0.48rem;
  }

  .diagram-arrow span {
    display: none;
  }

  .study-details {
    grid-template-columns: 1fr;
  }

  .study-details article {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--line-dark);
  }

  .study-details article + article {
    border-left: 0;
  }

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

  .support-note > span {
    grid-column: 1;
  }

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

  .step,
  .step:first-child {
    display: grid;
    min-height: auto;
    padding: 1.5rem 0;
    grid-template-columns: 2rem 5rem 1fr;
    grid-template-rows: auto auto;
    align-items: center;
    column-gap: 1rem;
  }

  .step + .step,
  .step:nth-child(3) {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .step-icon {
    height: 5rem;
    grid-row: 1 / 3;
    grid-column: 2;
  }

  .step-icon svg {
    width: 3.25rem;
  }

  .step h3 {
    margin: 0;
    align-self: end;
    font-size: 1.7rem;
  }

  .step p {
    align-self: start;
    grid-column: 3;
  }

  .stage h2 {
    position: static;
  }

  .timeline {
    margin-left: 0.4rem;
  }

  .founder-card {
    grid-template-columns: 1fr;
  }

  .founder-monogram {
    width: 6rem;
  }

  .founder-callout {
    grid-column: 1;
  }

  .closing h2 {
    font-size: clamp(3rem, 14vw, 5rem);
  }

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

  .site-footer {
    padding-top: 3rem;
    padding-bottom: 3rem;
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .site-footer > p {
    text-align: left;
  }

  .site-footer > div {
    justify-self: start;
    flex-wrap: wrap;
  }
}

@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;
  }

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