@font-face {
  font-family: "Geist";
  src: url("assets/fonts/Geist-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Geist";
  src: url("assets/fonts/Geist-Medium.ttf") format("truetype");
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: "Geist";
  src: url("assets/fonts/Geist-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Geist";
  src: url("assets/fonts/Geist-ExtraBold.ttf") format("truetype");
  font-weight: 800;
  font-display: swap;
}

@font-face {
  font-family: "Geist Mono";
  src: url("assets/fonts/GeistMono-Regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Geist Mono";
  src: url("assets/fonts/GeistMono-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}

:root {
  --navy: #101417;
  --surface-dim: #0b0f12;
  --surface: #151a1e;
  --surface-bright: #1c2024;
  --white: #ffffff;
  --white-82: rgba(255, 255, 255, 0.82);
  --white-62: rgba(255, 255, 255, 0.62);
  --white-42: rgba(255, 255, 255, 0.42);
  --white-18: rgba(255, 255, 255, 0.18);
  --white-10: rgba(255, 255, 255, 0.1);
  --white-06: rgba(255, 255, 255, 0.06);
  --yellow: #f6ff47;
  --cyan: #00f5ff;
  --max-width: 1280px;
  --page-pad: clamp(20px, 3.4vw, 48px);
  --header-height: 72px;
  --ease: 200ms ease-in-out;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

section[id],
article[id] {
  scroll-margin-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  background: var(--navy);
  color: var(--white);
  font-family: "Geist", system-ui, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open {
  overflow: hidden;
}

img,
svg {
  display: block;
}

a {
  color: inherit;
}

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

button {
  font: inherit;
}

::selection {
  background: var(--yellow);
  color: var(--navy);
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 12px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--yellow);
  color: var(--navy);
  font-weight: 700;
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform var(--ease);
}

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

.page-shell {
  width: min(100%, var(--max-width));
  margin-inline: auto;
  padding-inline: var(--page-pad);
}

.section-pad {
  padding-block: clamp(96px, 12vw, 156px);
}

.mono-label,
.eyebrow,
.source-note {
  font-family: "Geist Mono", ui-monospace, monospace;
}

.mono-label {
  margin: 0;
  color: var(--white-42);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 14px;
  margin: 0 0 20px;
  color: var(--cyan);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  display: flex;
  width: 100%;
  height: var(--header-height);
  align-items: center;
  justify-content: flex-end;
  gap: 16px;
  padding-inline: var(--page-pad);
  border-bottom: 0.5px solid transparent;
  transition: background var(--ease), border-color var(--ease);
}

.site-header.is-scrolled {
  background: rgba(16, 20, 23, 0.78);
  border-bottom-color: var(--white-10);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
}

.site-navigation {
  display: flex;
  align-items: center;
  gap: clamp(22px, 2.6vw, 40px);
}

.site-navigation a {
  color: var(--white-62);
  font-family: "Geist Mono", monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--ease);
}

.site-navigation a:hover {
  color: var(--white);
}

.site-navigation .nav-contact {
  padding: 9px 13px;
  border: 1px solid var(--white-18);
  border-radius: 4px;
  color: var(--white);
}

.site-navigation .nav-contact:hover {
  border-color: var(--yellow);
  color: var(--yellow);
}

.menu-button {
  display: none;
  width: 40px;
  height: 40px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--white-18);
  border-radius: 4px;
  color: var(--white);
}

.menu-button span:not(.sr-only) {
  display: block;
  width: 100%;
  height: 1px;
  margin-block: 5px;
  background: currentColor;
  transition: transform var(--ease);
}

.menu-button[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(3px) rotate(45deg);
}

.menu-button[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-3px) rotate(-45deg);
}

.hero {
  position: relative;
  display: grid;
  min-height: min(940px, 100svh);
  place-items: center;
  overflow: hidden;
  padding-top: var(--header-height);
  background:
    radial-gradient(circle at 80% 22%, rgba(0, 245, 255, 0.08), transparent 28%),
    linear-gradient(180deg, var(--surface-dim), var(--navy));
}

.signal-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  opacity: 0.58;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, black 4%, rgba(0, 0, 0, 0.82) 66%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 4%, rgba(0, 0, 0, 0.82) 66%, transparent 100%);
}

.hero-grid {
  position: absolute;
  z-index: 0;
  inset: 0;
  opacity: 0.28;
  background-image:
    linear-gradient(var(--white-06) 1px, transparent 1px),
    linear-gradient(90deg, var(--white-06) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(to bottom, black 0%, transparent 84%);
  mask-image: linear-gradient(to bottom, black 0%, transparent 84%);
}

.density-wave {
  position: absolute;
  z-index: 1;
  border: 1px solid rgba(246, 255, 71, 0.2);
  border-radius: 50%;
  transform: rotate(-18deg);
  pointer-events: none;
}

.density-wave::before,
.density-wave::after {
  position: absolute;
  content: "";
  inset: 13%;
  border: inherit;
  border-radius: inherit;
}

.density-wave::after {
  inset: 27%;
  border-color: rgba(0, 245, 255, 0.18);
}

.density-wave-one {
  top: 10%;
  right: -19%;
  width: 56vw;
  height: 56vw;
  min-width: 680px;
  min-height: 680px;
}

.density-wave-two {
  bottom: -27%;
  left: -22%;
  width: 46vw;
  height: 46vw;
  opacity: 0.42;
}

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 400px);
  gap: clamp(40px, 7vw, 96px);
  justify-content: space-between;
  align-items: center;
  padding-block: clamp(84px, 9vh, 104px) clamp(56px, 7vh, 76px);
}

.hero-portrait {
  width: min(100%, 380px);
  margin: 0;
  justify-self: end;
  aspect-ratio: 1;
  overflow: hidden;
  border: 1px solid var(--white-18);
  border-radius: 18px;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.34);
}

.hero-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-copy h1 {
  max-width: 900px;
  margin: 14px 0 0;
  font-size: clamp(2.42rem, 4.46vw, 4.55rem);
  font-weight: 700;
  letter-spacing: -0.038em;
  line-height: 1.12;
}

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

.hero-role {
  margin: 0;
  color: var(--white-42);
  font-family: "Geist Mono", ui-monospace, monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero-subhead {
  max-width: 720px;
  margin: 16px 0 0;
  color: var(--white-82);
  font-size: clamp(1.25rem, 1.9vw, 1.75rem);
  font-weight: 500;
  letter-spacing: -0.012em;
  line-height: 1.32;
}

.hero-lede {
  max-width: 690px;
  margin: 22px 0 0;
  color: var(--white-62);
  font-size: clamp(1rem, 1.25vw, 1.1rem);
  line-height: 1.6;
}

.hero-proof {
  max-width: 690px;
  margin: 20px 0 0;
  padding: 14px 0 14px 18px;
  border-left: 2px solid var(--yellow);
  color: var(--white-82);
  font-size: 0.88rem;
  line-height: 1.65;
}

.company-name {
  color: inherit;
  font-weight: 700;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 16px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-family: "Geist Mono", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background var(--ease), color var(--ease), border-color var(--ease);
}

.button-primary {
  min-width: 226px;
  background: var(--yellow);
  color: var(--navy);
}

.button-primary:hover {
  background: var(--white);
}

.button-secondary {
  min-width: 154px;
  border-color: var(--cyan);
  color: var(--cyan);
}

.button-secondary:hover {
  background: var(--cyan);
  color: var(--navy);
}

.source-note {
  margin: 0;
  color: var(--white-42);
  font-size: 0.61rem;
  letter-spacing: 0.015em;
  line-height: 1.55;
}

.impact {
  background: var(--navy);
}

.approach {
  background: var(--surface-dim);
  border-bottom: 0.5px solid var(--white-10);
}

.section-heading h2,
.method-intro h2,
.contact h2 {
  margin: 0;
  font-size: clamp(2.35rem, 4.5vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.042em;
  line-height: 1.01;
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.55fr);
  gap: clamp(50px, 9vw, 140px);
  align-items: end;
}

.split-heading > p,
.experiments-heading > p:last-child,
.method-intro > p:last-child {
  margin: 0;
  color: var(--white-62);
  font-size: 1rem;
  line-height: 1.7;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(52px, 6vw, 82px);
  border-top: 0.5px solid var(--white-18);
  border-left: 0.5px solid var(--white-18);
}

.metric-card {
  min-height: 310px;
  padding: clamp(24px, 3vw, 38px);
  border-right: 0.5px solid var(--white-18);
  border-bottom: 0.5px solid var(--white-18);
  background: var(--surface);
  transition: background var(--ease);
}

.metric-card:hover {
  background: var(--surface-bright);
}

.metric-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.metric-head img {
  width: 38px;
  height: 38px;
}

.metric-value {
  margin: 58px 0 10px;
  color: var(--yellow);
  font-size: clamp(2.75rem, 4vw, 4.2rem);
  font-weight: 700;
  letter-spacing: -0.048em;
  line-height: 0.95;
}

.metric-label {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.metric-detail {
  min-height: 24px;
  margin: 5px 0 26px;
  color: var(--white-62);
  font-size: 0.78rem;
}

.experiment-directory {
  background: var(--navy);
  border-top: 0.5px solid var(--white-10);
  border-bottom: 0.5px solid var(--white-10);
}

.directory-heading {
  margin-bottom: clamp(52px, 7vw, 82px);
}

.experiment-menu {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 0.5px solid var(--white-18);
  border-left: 0.5px solid var(--white-18);
}

.experiment-menu-item {
  position: relative;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) auto;
  gap: 20px;
  min-height: 228px;
  padding: clamp(24px, 3vw, 34px);
  background: var(--surface);
  border-right: 0.5px solid var(--white-18);
  border-bottom: 0.5px solid var(--white-18);
  color: var(--white);
  text-decoration: none;
  transition: background var(--ease), color var(--ease), box-shadow var(--ease);
}

.experiment-menu-item:hover,
.experiment-menu-item.is-current {
  background: var(--surface-bright);
  box-shadow: inset 3px 0 0 var(--yellow);
}

.experiment-menu-item:focus-visible {
  z-index: 1;
}

.experiment-menu-number,
.experiment-menu-arrow {
  color: var(--cyan);
  font-family: "Geist Mono", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.experiment-menu-main {
  display: flex;
  min-width: 0;
  flex-direction: column;
}

.experiment-menu-title {
  display: block;
  max-width: 440px;
  font-size: clamp(1.18rem, 1.8vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.18;
}

.experiment-menu-summary {
  display: block;
  max-width: 500px;
  margin-top: 12px;
  color: var(--white-62);
  font-size: 0.82rem;
  line-height: 1.55;
}

.experiment-menu-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: auto;
  padding-top: 24px;
  color: var(--white-42);
  font-family: "Geist Mono", monospace;
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  line-height: 1.5;
  text-transform: uppercase;
}

.experiment-menu-meta-item {
  display: inline-flex;
  gap: 4px;
}

.experiment-menu-arrow {
  align-self: start;
  color: var(--yellow);
  transition: transform var(--ease);
}

.experiment-menu-item:hover .experiment-menu-arrow,
.experiment-menu-item.is-current .experiment-menu-arrow {
  transform: translate(3px, 3px);
}

.experiments {
  background: var(--surface-dim);
}

.experiments-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(240px, 0.48fr);
  column-gap: clamp(40px, 8vw, 120px);
  align-items: end;
  margin-bottom: clamp(70px, 9vw, 120px);
}

.experiments-heading .eyebrow {
  grid-column: 1 / -1;
}

.experiments-heading h2 {
  max-width: 820px;
}

.experiment-list {
  border-top: 0.5px solid var(--white-18);
}

.experiment {
  display: grid;
  grid-template-columns: minmax(220px, 0.32fr) minmax(0, 1fr);
  gap: clamp(42px, 8vw, 124px);
  padding-block: clamp(84px, 10vw, 132px);
  border-bottom: 0.5px solid var(--white-18);
}

.experiment-heading-meta {
  margin: 0 0 18px;
  color: var(--cyan);
}

.experiment-rail {
  align-self: start;
}

.experiment-number {
  margin: 0 0 36px;
  color: var(--cyan);
  font-family: "Geist Mono", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.experiment-icon {
  display: grid;
  width: 82px;
  height: 82px;
  margin-bottom: 46px;
  place-items: center;
  background:
    radial-gradient(circle at 68% 24%, rgba(0, 245, 255, 0.14), transparent 36%),
    linear-gradient(145deg, rgba(246, 255, 71, 0.08), rgba(28, 32, 36, 0.92));
  border: 0.5px solid rgba(246, 255, 71, 0.28);
  border-radius: 4px;
}

.experiment-icon img {
  width: 54px;
  height: 54px;
}

.metric-head img,
.experiment-icon img {
  transform: translate3d(var(--icon-x, 0), var(--icon-y, 0), 0) rotate(var(--icon-rotate, 0deg));
  transition: transform 240ms ease-out;
  will-change: transform;
}

.experiment-meta {
  display: grid;
  gap: 22px;
  margin: 0;
}

.experiment-meta div {
  padding-bottom: 16px;
  border-bottom: 0.5px solid var(--white-10);
}

.experiment-meta dt {
  margin-bottom: 6px;
}

.experiment-meta dd {
  margin: 0;
  color: var(--white-82);
  font-size: 0.82rem;
  line-height: 1.45;
}

.experiment-title {
  max-width: 850px;
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 4.25rem);
  font-weight: 700;
  letter-spacing: -0.042em;
  line-height: 1.02;
}

.experiment-summary {
  max-width: 760px;
  margin: 22px 0 clamp(52px, 7vw, 78px);
  color: var(--white-62);
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  line-height: 1.65;
}

.case-block {
  display: grid;
  grid-template-columns: minmax(130px, 0.22fr) minmax(0, 0.78fr);
  gap: clamp(28px, 5vw, 76px);
  max-width: 940px;
  padding-block: 34px;
  border-top: 0.5px solid var(--white-10);
}

.case-question .case-label {
  color: var(--cyan);
}

.case-label {
  color: var(--yellow);
}

.case-copy {
  margin: 0;
  color: var(--white-82);
  font-size: clamp(1rem, 1.3vw, 1.12rem);
  line-height: 1.72;
}

.case-results {
  max-width: 940px;
  margin-top: 28px;
  padding: clamp(28px, 4vw, 46px);
  background: rgba(28, 32, 36, 0.72);
  border: 0.5px solid var(--white-18);
  border-radius: 4px;
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
}

.case-results > .case-label {
  margin-bottom: 30px;
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 0.5px solid var(--white-18);
  border-left: 0.5px solid var(--white-18);
}

.result-item {
  min-height: 138px;
  padding: 22px;
  border-right: 0.5px solid var(--white-18);
  border-bottom: 0.5px solid var(--white-18);
}

.result-value {
  margin: 0 0 10px;
  color: var(--yellow);
  font-size: clamp(1.8rem, 3vw, 2.65rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1;
}

.result-label {
  max-width: 220px;
  margin: 0;
  color: var(--white-62);
  font-size: 0.78rem;
  line-height: 1.45;
}

.result-summary {
  margin: 28px 0 20px;
  color: var(--white-82);
  font-size: 0.96rem;
  line-height: 1.65;
}

.learning-block {
  position: relative;
  max-width: 940px;
  margin: 32px 0 0;
  padding: clamp(30px, 4vw, 48px);
  background: var(--yellow);
  color: var(--navy);
  border-radius: 4px;
}

.learning-block::after {
  position: absolute;
  top: 22px;
  right: 28px;
  content: "↳";
  font-family: "Geist Mono", monospace;
  font-size: 1.2rem;
  font-weight: 700;
}

.learning-block .case-label {
  color: rgba(16, 20, 23, 0.62);
}

.learning-copy {
  max-width: 760px;
  margin: 20px 0 0;
  font-size: clamp(1.25rem, 2vw, 1.72rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.3;
}

.back-to-menu {
  display: inline-flex;
  margin-top: 34px;
  padding-bottom: 4px;
  border-bottom: 1px solid currentColor;
  color: var(--cyan);
  font-family: "Geist Mono", monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-decoration: none;
  text-transform: uppercase;
}

.back-to-menu:hover {
  color: var(--yellow);
}

.method {
  background: var(--navy);
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.75fr) minmax(0, 1fr);
  gap: clamp(64px, 10vw, 150px);
}

.method-intro {
  align-self: start;
  position: sticky;
  top: calc(var(--header-height) + 46px);
}

.method-intro > p:last-child {
  max-width: 490px;
  margin-top: 30px;
}

.method-steps {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.method-steps li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 26px;
  padding-block: 34px;
  border-top: 0.5px solid var(--white-18);
}

.method-steps li:last-child {
  border-bottom: 0.5px solid var(--white-18);
}

.method-steps > li > span {
  color: var(--cyan);
  font-family: "Geist Mono", monospace;
  font-size: 0.7rem;
  font-weight: 700;
}

.method-steps h3 {
  margin: -6px 0 10px;
  font-size: clamp(1.55rem, 2.7vw, 2.35rem);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.method-steps p {
  max-width: 560px;
  margin: 0;
  color: var(--white-62);
  line-height: 1.6;
}

.contact {
  position: relative;
  overflow: hidden;
  background: var(--yellow);
  color: var(--navy);
}

.contact-orbit {
  position: absolute;
  right: -12vw;
  bottom: -54%;
  width: 52vw;
  height: 52vw;
  border: 1px solid rgba(16, 20, 23, 0.24);
  border-radius: 50%;
}

.contact-orbit::before,
.contact-orbit::after {
  position: absolute;
  content: "";
  inset: 16%;
  border: inherit;
  border-radius: inherit;
}

.contact-orbit::after {
  inset: 32%;
}

.contact-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.55fr);
  gap: clamp(52px, 9vw, 140px);
  align-items: end;
}

.contact h2 {
  max-width: 820px;
}

.dark-eyebrow {
  color: rgba(16, 20, 23, 0.65);
}

.contact-copy > p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.65;
}

.button-dark {
  min-width: 188px;
  background: var(--navy);
  color: var(--white);
}

.button-dark:hover {
  background: var(--white);
  color: var(--navy);
}

.text-link,
.text-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  background: transparent;
  border: 0;
  border-bottom: 1px solid currentColor;
  font-family: "Geist Mono", monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.6;
  text-decoration: none;
  text-transform: uppercase;
  cursor: pointer;
}

.dark-link {
  align-self: center;
  margin-left: 8px;
}

.site-footer {
  background: var(--surface-dim);
  color: var(--white-62);
}

.footer-layout {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  min-height: 110px;
  align-items: center;
  gap: 30px;
  font-family: "Geist Mono", monospace;
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-layout > p {
  margin: 0;
  color: var(--yellow);
}

.footer-actions {
  display: flex;
  justify-content: flex-end;
  gap: 24px;
}

.footer-actions a,
.footer-actions button {
  color: var(--white-62);
  text-decoration: none;
}

.footer-actions a:hover,
.footer-actions button:hover {
  color: var(--white);
}

.noscript-message {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 200;
  max-width: 420px;
  padding: 16px;
  background: var(--yellow);
  color: var(--navy);
  border: 1px solid var(--navy);
  font-size: 0.9rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 520ms ease-out var(--reveal-delay, 0ms),
    transform 520ms ease-out var(--reveal-delay, 0ms);
}

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

@media (max-width: 980px) {
  .hero {
    min-height: auto;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 72px;
  }

  .hero-portrait {
    width: min(72vw, 340px);
    justify-self: start;
    order: -1;
  }

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

  .experiment {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 46px;
  }

  .method-layout {
    gap: 64px;
  }

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

  .contact-copy {
    max-width: 580px;
  }

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

  .footer-layout > p {
    display: none;
  }
}

@media (max-width: 760px) {
  :root {
    --header-height: 64px;
  }

  .site-header {
    background: rgba(16, 20, 23, 0.78);
    border-bottom-color: var(--white-10);
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
  }

  .menu-button {
    display: block;
  }

  .site-navigation {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    z-index: 99;
    display: none;
    width: 100vw;
    height: calc(100svh - var(--header-height));
    align-items: flex-start;
    flex-direction: column;
    gap: 0;
    padding: 42px var(--page-pad);
    background: rgba(11, 15, 18, 0.97);
    overflow-y: auto;
    -webkit-backdrop-filter: blur(24px);
    backdrop-filter: blur(24px);
  }

  .site-navigation.is-open {
    display: flex;
  }

  .site-navigation a,
  .site-navigation .nav-contact {
    width: 100%;
    padding: 18px 0;
    border: 0;
    border-bottom: 0.5px solid var(--white-18);
    border-radius: 0;
    color: var(--white);
    font-size: 1rem;
  }

  .hero-copy h1 {
    font-size: clamp(2.17rem, 9.48vw, 3.4rem);
    line-height: 1.12;
  }

  .hero-layout {
    padding-top: 118px;
  }

  .density-wave-one {
    right: -76%;
  }

  .split-heading,
  .experiments-heading,
  .method-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .experiments-heading {
    display: block;
  }

  .experiments-heading h2 {
    margin-bottom: 26px;
  }

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

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

  .experiment-menu-item {
    min-height: 214px;
  }

  .metric-card {
    min-height: 284px;
  }

  .experiment {
    grid-template-columns: 1fr;
    gap: 46px;
  }

  .experiment-rail {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 24px;
    align-items: start;
  }

  .experiment-number {
    grid-column: 1 / -1;
    margin-bottom: 24px;
  }

  .experiment-icon {
    width: 74px;
    height: 74px;
    margin: 0;
  }

  .experiment-meta {
    gap: 12px;
  }

  .experiment-meta div {
    display: grid;
    grid-template-columns: 72px 1fr;
    gap: 10px;
    padding-bottom: 8px;
  }

  .case-block {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .result-item {
    min-height: 116px;
  }

  .method-intro {
    position: static;
  }

  .contact-orbit {
    right: -45%;
    width: 110vw;
    height: 110vw;
  }

  .footer-layout {
    grid-template-columns: 1fr;
    padding-block: 30px;
  }

  .footer-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .hero-actions,
  .contact-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .dark-link {
    align-self: flex-start;
    margin: 10px 0 0;
  }

  .experiment-title {
    font-size: 2.25rem;
  }

  .experiment-menu-item {
    grid-template-columns: 34px minmax(0, 1fr) auto;
    gap: 14px;
  }

  .experiment-menu-summary {
    font-size: 0.78rem;
  }

  .case-results {
    margin-inline: calc(var(--page-pad) * -0.45);
  }

  .learning-block {
    margin-inline: calc(var(--page-pad) * -0.45);
  }

  .method-steps li {
    grid-template-columns: 42px 1fr;
    gap: 16px;
  }

  .footer-brand {
    align-items: flex-start;
    flex-direction: column;
  }
}

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

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

@media print {
  @page {
    size: A4;
    margin: 14mm;
  }

  :root {
    --navy: #ffffff;
    --surface-dim: #ffffff;
    --surface: #ffffff;
    --surface-bright: #f4f4f4;
    --white: #101417;
    --white-82: rgba(16, 20, 23, 0.82);
    --white-62: rgba(16, 20, 23, 0.68);
    --white-42: rgba(16, 20, 23, 0.52);
    --white-18: rgba(16, 20, 23, 0.2);
    --white-10: rgba(16, 20, 23, 0.12);
  }

  body {
    color: #101417;
    background: #ffffff;
    font-size: 9pt;
  }

  .site-header,
  .hero-grid,
  .signal-canvas,
  .density-wave,
  .contact-orbit,
  .hero-actions,
  .footer-actions {
    display: none !important;
  }

  .section-pad,
  .hero-layout {
    padding-block: 12mm;
  }

  .hero {
    min-height: auto;
    background: #ffffff;
  }

  .hero-layout,
  .split-heading,
  .experiments-heading,
  .method-layout,
  .contact-layout {
    display: block;
  }

  .hero-copy h1 {
    max-width: 150mm;
    font-size: 28pt;
  }

  .hero-copy h1 span,
  .metric-value,
  .result-value,
  .eyebrow,
  .experiment-number,
  .case-question .case-label {
    color: #101417;
  }

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

  .metric-card {
    min-height: auto;
    padding: 8mm;
    break-inside: avoid;
  }

  .metric-value {
    margin-top: 8mm;
    font-size: 25pt;
  }

  .experiments-heading > p:last-child,
  .split-heading > p {
    margin-top: 6mm;
  }

  .experiment {
    display: block;
    padding-block: 12mm;
    break-before: page;
  }

  .experiment-rail {
    display: flex;
    gap: 8mm;
    margin-bottom: 8mm;
  }

  .experiment-icon {
    display: none;
  }

  .experiment-meta {
    display: flex;
    gap: 8mm;
  }

  .experiment-title {
    max-width: 165mm;
    margin-bottom: 9mm;
    font-size: 27pt;
  }

  .case-block {
    grid-template-columns: 34mm 1fr;
    padding-block: 6mm;
  }

  .case-results,
  .learning-block {
    break-inside: avoid;
  }

  .learning-block {
    background: #f6ff47;
  }

  .method-intro {
    position: static;
  }

  .method-steps {
    margin-top: 8mm;
  }

  .contact {
    background: #f6ff47;
  }

  .site-footer {
    background: #101417;
    color: #ffffff;
  }

  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
}