@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700&family=Onest:wght@500;600;700&display=swap");

:root {
  --ink: #09130f;
  --ink-soft: #14221b;
  --cream: #ecebdd;
  --paper: #f7f7f0;
  --acid: #b8f60b;
  --acid-soft: #d6ff67;
  --mint: #8fffc2;
  --line-dark: rgba(255, 255, 255, 0.16);
  --line-light: rgba(9, 19, 15, 0.18);
  --font-display: "Onest", "Arial", sans-serif;
  --font-body: "Manrope", Arial, sans-serif;
  --container: min(1440px, calc(100% - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
}

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

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

.container {
  width: var(--container);
  margin: 0 auto;
}

.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;
}

.noise {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 220 220' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
}

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

.section-light {
  background: var(--paper);
}

.section-cream {
  background: var(--cream);
}

.section-accent {
  background: var(--acid);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: 80px;
  color: var(--paper);
  transition: background 0.3s ease, border 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header.scrolled {
  background: rgba(9, 19, 15, 0.84);
  border-bottom: 1px solid var(--line-dark);
  backdrop-filter: blur(16px);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.brand > span:last-child > span {
  color: var(--acid);
}

.brand-mark {
  position: relative;
  width: 29px;
  height: 29px;
  border: 1.5px solid var(--acid);
  border-radius: 50%;
}

.brand-mark::before,
.brand-mark::after,
.brand-mark span {
  content: "";
  position: absolute;
  background: var(--acid);
}

.brand-mark::before {
  width: 4px;
  height: 14px;
  left: 12px;
  top: 8px;
  border-radius: 4px;
  transform: rotate(-18deg);
}

.brand-mark::after,
.brand-mark span {
  width: 8px;
  height: 5px;
  top: 6px;
  border-radius: 8px 0 8px 0;
}

.brand-mark::after {
  left: 7px;
  transform: rotate(32deg);
}

.brand-mark span {
  right: 5px;
  transform: rotate(130deg);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 27px;
  font-size: 13px;
  font-weight: 600;
}

.main-nav a {
  transition: color 0.2s ease;
}

.main-nav a:hover {
  color: var(--acid);
}

.main-nav .nav-cta {
  padding: 11px 18px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 999px;
}

.main-nav .nav-cta:hover {
  color: var(--ink);
  background: var(--acid);
  border-color: var(--acid);
}

.menu-toggle {
  display: none;
}

.hero {
  min-height: 850px;
  padding: 120px 0 30px;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: 60px;
  align-items: start;
  min-height: 570px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(247, 247, 240, 0.62);
}

.eyebrow span {
  width: 24px;
  height: 1px;
  background: var(--acid);
}

.eyebrow.dark {
  color: rgba(9, 19, 15, 0.56);
}

.eyebrow.dark span {
  background: var(--ink);
}

.hero h1,
.section-heading h2,
.benefits-copy h2,
.intro-copy h2,
.scale-copy h2,
.proof-top h2,
.contact h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.04;
}

.hero h1 {
  max-width: 850px;
  font-size: clamp(56px, 5.4vw, 86px);
}

.hero h1 em {
  color: var(--acid);
  font-style: normal;
}

.hero-lead {
  max-width: 620px;
  margin: 30px 0 0;
  color: rgba(247, 247, 240, 0.66);
  font-size: 17px;
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-top: 38px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  min-width: 205px;
  padding: 16px 20px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease;
}

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

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

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

.text-link {
  display: inline-flex;
  gap: 13px;
  align-items: center;
  font-size: 13px;
  font-weight: 600;
}

.text-link span {
  color: var(--acid);
}

.hero-visual {
  position: relative;
  min-height: 570px;
  display: grid;
  place-items: center;
  min-width: 0;
}

.hero-product {
  position: relative;
  width: min(520px, calc(100% - 36px));
  height: 550px;
  margin: 0;
  overflow: hidden;
  background: var(--ink-soft);
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.24);
}

.hero-product::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(9, 19, 15, 0.04) 38%, rgba(9, 19, 15, 0.88));
  pointer-events: none;
}

.hero-product img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 24%;
  filter: saturate(0.72) contrast(1.05);
}

.hero-product figcaption {
  position: absolute;
  z-index: 2;
  inset: auto 0 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 48px 28px 26px;
  background: linear-gradient(transparent, rgba(9, 19, 15, 0.92));
}

.hero-product figcaption span {
  color: var(--acid);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero-product figcaption strong {
  max-width: 320px;
  font-size: 18px;
  line-height: 1.35;
}

.metric {
  position: absolute;
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 13px 18px;
  color: var(--paper);
  background: rgba(15, 31, 23, 0.94);
  border: 1px solid var(--line-dark);
  border-radius: 2px;
  backdrop-filter: blur(10px);
}

.metric strong {
  color: var(--acid);
  font-family: var(--font-display);
  font-size: 19px;
}

.metric span {
  font-size: 11px;
  color: rgba(247, 247, 240, 0.72);
}

.metric-top {
  top: 54px;
  right: calc(50% - 242px);
}

.metric-bottom {
  top: 54px;
  bottom: auto;
  left: calc(50% - 242px);
}

.hero-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: rgba(247, 247, 240, 0.38);
  font-size: 11px;
}

.scroll-line {
  width: 120px;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.15);
}

.scroll-line span {
  display: block;
  width: 45%;
  height: 100%;
  background: var(--acid);
  animation: scrollLine 2.4s ease-in-out infinite;
}

.intro {
  padding: 125px 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: 0.45fr 1.5fr 0.65fr;
  gap: 56px;
  align-items: start;
}

.section-number {
  padding-top: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(9, 19, 15, 0.45);
}

.intro-copy h2,
.section-heading h2,
.benefits-copy h2,
.scale-copy h2,
.proof-top h2,
.contact h2 {
  font-size: clamp(38px, 4.3vw, 64px);
}

.intro-copy > p {
  max-width: 700px;
  margin: 32px 0 0;
  font-size: 17px;
  line-height: 1.7;
  color: rgba(9, 19, 15, 0.66);
}

.intro-statement {
  padding: 20px 0 0;
  border-top: 1px solid var(--line-light);
}

.intro-statement span {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: rgba(9, 19, 15, 0.45);
}

.intro-statement p {
  margin: 18px 0 0;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.45;
}

.technology,
.prototype,
.scale,
.proof {
  padding: 130px 0;
}

.section-heading {
  display: grid;
  grid-template-columns: 1.45fr 0.55fr;
  gap: 80px;
  align-items: end;
}

.section-heading > p,
.benefits-copy > p:last-child,
.scale-copy > p,
.contact-copy > p:last-child {
  margin: 0 0 7px;
  color: rgba(9, 19, 15, 0.62);
  font-size: 15px;
  line-height: 1.7;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 1fr;
  margin-top: 80px;
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.process-step {
  position: relative;
  min-height: 320px;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 26px 26px 34px;
  border-right: 1px solid var(--line-light);
}

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

.process-step > span {
  display: block;
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(9, 19, 15, 0.12);
}

.process-kicker {
  align-self: flex-start;
  margin: 46px 0 24px;
  padding: 7px 10px;
  color: #506700;
  background: rgba(184, 246, 11, 0.42);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.process-step h3 {
  margin: 0;
  font-size: 18px;
}

.process-step p {
  margin: 12px 0 0;
  color: rgba(9, 19, 15, 0.6);
  font-size: 14px;
  line-height: 1.6;
}

.benefits {
  padding: 140px 0;
}

.benefits-grid {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 110px;
}

.benefits-copy {
  position: sticky;
  top: 140px;
  align-self: start;
}

.benefits-copy > p:last-child {
  max-width: 450px;
  margin-top: 28px;
  color: rgba(247, 247, 240, 0.56);
}

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

.benefit-item {
  display: grid;
  grid-template-columns: 50px 1fr 30px;
  gap: 22px;
  align-items: start;
  padding: 32px 0;
  border-bottom: 1px solid var(--line-dark);
}

.benefit-item > span {
  color: var(--acid);
  font-size: 12px;
  font-weight: 700;
}

.benefit-item h3 {
  margin: 0;
  font-size: 22px;
}

.benefit-item p {
  margin: 9px 0 0;
  color: rgba(247, 247, 240, 0.64);
  font-size: 14px;
  line-height: 1.6;
}

.benefit-item > i {
  color: var(--acid);
  font-size: 18px;
  font-style: normal;
  transition: transform 0.25s ease;
}

.benefit-item:hover > i {
  transform: translate(4px, -4px);
}

.prototype-heading {
  margin-bottom: 72px;
}

.prototype-showcase {
  display: grid;
  grid-template-columns: 1.03fr 0.97fr;
  min-height: 680px;
  background: var(--cream);
}

.prototype-photo {
  position: relative;
  min-height: 680px;
  margin: 0;
  overflow: hidden;
  background: #d8d8d0;
}

.prototype-photo img {
  width: 100%;
  height: 100%;
  max-height: 750px;
  object-fit: cover;
  object-position: center 34%;
  filter: saturate(0.7) contrast(1.05);
  transition: transform 0.7s ease;
}

.prototype-photo:hover img {
  transform: scale(1.025);
}

.prototype-photo figcaption {
  position: absolute;
  left: 24px;
  bottom: 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 16px;
  color: var(--paper);
  background: rgba(9, 19, 15, 0.85);
  font-size: 13px;
  backdrop-filter: blur(10px);
}

.prototype-photo figcaption span {
  color: var(--acid);
}

.prototype-details {
  padding: 72px 64px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.detail-tag {
  align-self: flex-start;
  padding: 8px 12px;
  border: 1px solid var(--line-light);
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.prototype-details h3 {
  max-width: 520px;
  margin: 28px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.13;
}

.prototype-details > p {
  margin: 24px 0 0;
  color: rgba(9, 19, 15, 0.62);
  font-size: 14px;
  line-height: 1.7;
}

.prototype-details dl {
  margin: 46px 0 0;
}

.prototype-details dl div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 15px 0;
  border-top: 1px solid var(--line-light);
  font-size: 14px;
}

.prototype-details dl div:last-child {
  border-bottom: 1px solid var(--line-light);
}

.prototype-details dt {
  color: rgba(9, 19, 15, 0.45);
}

.prototype-details dd {
  margin: 0;
  font-weight: 700;
}

.scale-grid {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 110px;
  align-items: center;
}

.scale-copy > p {
  max-width: 480px;
  margin-top: 30px;
}

.scale-copy ul {
  margin: 35px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-light);
}

.scale-copy li {
  position: relative;
  padding: 15px 0 15px 22px;
  border-bottom: 1px solid var(--line-light);
  font-size: 14px;
}

.scale-copy li::before {
  content: "+";
  position: absolute;
  left: 0;
  color: #628600;
  font-weight: 700;
}

.scale-visual {
  position: relative;
  margin: 0;
  padding: 60px;
  background: var(--paper);
}

.scale-visual::before {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(9, 19, 15, 0.08);
}

.scale-visual img {
  position: relative;
  z-index: 1;
  width: 100%;
  mix-blend-mode: multiply;
  filter: contrast(1.08);
}

.scale-visual figcaption {
  position: absolute;
  z-index: 2;
  right: 36px;
  bottom: 30px;
  font-size: 12px;
  color: rgba(9, 19, 15, 0.62);
}

.proof-top {
  display: grid;
  grid-template-columns: 0.45fr 1.55fr;
  gap: 70px;
  align-items: start;
}

.proof-top .eyebrow {
  margin-top: 13px;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 75px;
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
}

.proof-card {
  min-height: 325px;
  padding: 36px;
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.proof-card.accent {
  background: var(--acid);
}

.proof-card strong {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(46px, 5vw, 72px);
  font-weight: 500;
  letter-spacing: -0.04em;
}

.proof-card h3 {
  margin: 65px 0 0;
  font-size: 18px;
}

.proof-card p {
  margin: 12px 0 0;
  max-width: 320px;
  color: rgba(9, 19, 15, 0.66);
  font-size: 14px;
  line-height: 1.6;
}

.proof-note {
  margin: 20px 0 0;
  color: rgba(9, 19, 15, 0.62);
  font-size: 13px;
}

.city-context,
.landscape,
.comparison,
.constraints,
.research-gallery {
  padding: 130px 0;
}

.city-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 90px;
  align-items: center;
}

.city-photo {
  position: relative;
  min-height: 620px;
  margin: 0;
  overflow: hidden;
}

.city-photo::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(9, 19, 15, 0.6));
  pointer-events: none;
}

.city-photo img {
  width: 100%;
  height: 620px;
  object-fit: cover;
  filter: saturate(0.76) contrast(1.06);
}

.city-photo figcaption {
  position: absolute;
  z-index: 2;
  left: 25px;
  bottom: 22px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 11px;
}

.city-copy h2,
.landscape-head h2,
.constraints-heading h2,
.gallery-heading h2,
.calculation-head h2,
.patents-head h2,
.validation-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(38px, 4.15vw, 61px);
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.city-copy > p:not(.eyebrow) {
  margin: 30px 0 0;
  color: rgba(9, 19, 15, 0.64);
  font-size: 16px;
  line-height: 1.75;
}

.city-stat {
  display: grid;
  grid-template-columns: max-content minmax(0, 1fr);
  gap: 34px;
  align-items: center;
  margin-top: 52px;
  padding-top: 26px;
  border-top: 1px solid var(--line-light);
}

.city-stat strong {
  font-family: var(--font-display);
  font-size: 58px;
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 1;
  white-space: nowrap;
}

.city-stat span {
  color: rgba(9, 19, 15, 0.62);
  font-size: 14px;
  line-height: 1.55;
}

.landscape-head,
.gallery-heading {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 90px;
  align-items: end;
}

.landscape-head > p,
.gallery-heading > p {
  margin: 0 0 5px;
  color: rgba(247, 247, 240, 0.55);
  font-size: 14px;
  line-height: 1.7;
}

.system-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  margin: 80px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-dark);
  border-left: 1px solid var(--line-dark);
}

.system-list li {
  display: grid;
  grid-template-columns: 45px 1fr;
  gap: 6px 16px;
  min-height: 150px;
  padding: 28px;
  border-right: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.system-list span {
  grid-row: span 2;
  color: var(--acid);
  font-size: 11px;
  font-weight: 700;
}

.system-list strong {
  font-size: 19px;
}

.system-list small {
  color: rgba(247, 247, 240, 0.62);
  font-size: 14px;
  line-height: 1.5;
}

.comparison-table {
  margin-top: 75px;
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
}

.comparison-row {
  display: grid;
  grid-template-columns: 0.8fr 1fr 1.2fr;
}

.comparison-row > * {
  min-width: 0;
  padding: 30px;
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.comparison-header > span {
  padding-top: 17px;
  padding-bottom: 17px;
  color: rgba(9, 19, 15, 0.44);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.comparison-row > div:first-child {
  display: flex;
  flex-direction: column;
}

.comparison-row small {
  margin-bottom: 34px;
  color: rgba(9, 19, 15, 0.38);
  font-size: 11px;
  font-weight: 700;
}

.comparison-row strong {
  max-width: 260px;
  font-size: 19px;
  line-height: 1.3;
}

.comparison-row p {
  margin: 11px 0 0;
  color: rgba(9, 19, 15, 0.62);
  font-size: 13px;
}

.comparison-row ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.comparison-row li {
  position: relative;
  padding: 7px 0 7px 18px;
  color: rgba(9, 19, 15, 0.65);
  font-size: 14px;
  line-height: 1.45;
}

.comparison-row li::before {
  content: "—";
  position: absolute;
  left: 0;
}

.comparison-row.featured {
  background: var(--acid);
}

.comparison-row.featured small,
.comparison-row.featured p {
  color: rgba(9, 19, 15, 0.56);
}

.anatomy {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  margin-top: 105px;
  background: var(--paper);
}

.anatomy-copy {
  padding: 70px 58px;
}

.anatomy-copy h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 3vw, 43px);
  font-weight: 500;
  letter-spacing: -0.035em;
  line-height: 1.12;
}

.anatomy-copy > p:not(.eyebrow) {
  margin: 25px 0 0;
  color: rgba(9, 19, 15, 0.68);
  font-size: 16px;
  line-height: 1.7;
}

.anatomy-copy ol {
  margin: 38px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-light);
}

.anatomy-copy li {
  display: grid;
  grid-template-columns: 45px 1fr;
  padding: 13px 0;
  border-bottom: 1px solid var(--line-light);
  font-size: 14px;
  font-weight: 600;
}

.anatomy-copy li span {
  color: rgba(9, 19, 15, 0.52);
  font-size: 11px;
}

.anatomy-visual {
  position: relative;
  min-height: 650px;
  display: grid;
  place-items: center;
  margin: 0;
  padding: 55px;
  background: white;
  overflow: hidden;
}

.anatomy-visual::before {
  content: "";
  position: absolute;
  width: 390px;
  height: 390px;
  border: 1px solid rgba(9, 19, 15, 0.08);
  border-radius: 50%;
  box-shadow: 0 0 0 65px rgba(9, 19, 15, 0.025), 0 0 0 130px rgba(9, 19, 15, 0.018);
}

.anatomy-visual img {
  position: relative;
  z-index: 2;
  width: min(100%, 610px);
  mix-blend-mode: multiply;
}

.anatomy-visual figcaption {
  position: absolute;
  z-index: 3;
  right: 28px;
  bottom: 25px;
  color: rgba(9, 19, 15, 0.42);
  font-size: 12px;
}

.constraints-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 110px;
}

.constraint-list {
  border-top: 1px solid var(--line-light);
}

.constraint-list article {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 18px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line-light);
}

.constraint-list article > span {
  color: #668400;
  font-size: 11px;
  font-weight: 700;
}

.constraint-list h3 {
  margin: 0;
  font-size: 20px;
}

.constraint-list p {
  margin: 9px 0 0;
  color: rgba(9, 19, 15, 0.58);
  font-size: 14px;
  line-height: 1.6;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 75px;
}

.gallery-grid figure {
  position: relative;
  height: 650px;
  margin: 0;
  overflow: hidden;
  background: var(--ink-soft);
}

.gallery-grid figure:nth-child(2) {
  margin-top: 0;
}

.gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.76) contrast(1.04);
  transition: transform 0.65s ease;
}

.gallery-grid figure:hover img {
  transform: scale(1.025);
}

.gallery-grid figcaption {
  position: absolute;
  inset: auto 0 0;
  display: flex;
  gap: 16px;
  padding: 38px 22px 20px;
  color: var(--paper);
  background: linear-gradient(transparent, rgba(9, 19, 15, 0.85));
  font-size: 13px;
}

.gallery-grid figcaption span {
  color: var(--acid);
}

.calculation-block {
  margin-top: 135px;
  padding-top: 125px;
  border-top: 1px solid var(--line-light);
}

.calculation-head {
  display: grid;
  grid-template-columns: 0.34fr 1fr 0.55fr;
  gap: 60px;
  align-items: start;
}

.calculation-head .eyebrow {
  margin-top: 13px;
}

.calculation-head > p:last-child {
  margin: 8px 0 0;
  color: rgba(9, 19, 15, 0.58);
  font-size: 15px;
  line-height: 1.7;
}

.calculation-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  margin-top: 70px;
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
}

.calculation-steps > div {
  min-height: 210px;
  padding: 25px 20px;
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.calculation-steps span {
  display: block;
  margin-bottom: 56px;
  color: #668400;
  font-size: 11px;
  font-weight: 700;
}

.calculation-steps strong {
  font-size: 16px;
}

.calculation-steps p {
  margin: 8px 0 0;
  color: rgba(9, 19, 15, 0.62);
  font-size: 13px;
  line-height: 1.5;
}

.engineering-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 14px;
  margin-top: 14px;
}

.engineering-grid figure {
  position: relative;
  min-height: 500px;
  display: grid;
  place-items: center;
  margin: 0;
  padding: 55px;
  background: var(--paper);
}

.engineering-grid img {
  width: 100%;
  mix-blend-mode: multiply;
}

.engineering-grid figcaption {
  position: absolute;
  left: 24px;
  bottom: 20px;
  color: rgba(9, 19, 15, 0.62);
  font-size: 12px;
}

.patents-head {
  display: grid;
  grid-template-columns: 0.48fr 1.52fr;
  gap: 70px;
  align-items: start;
  margin-top: 130px;
  padding-top: 120px;
  border-top: 1px solid var(--line-light);
}

.patents-head .eyebrow {
  margin-top: 13px;
}

.patent-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 70px;
}

.patent-card {
  display: grid;
  grid-template-columns: 0.65fr 1.35fr;
  gap: 32px;
  padding: 34px;
  background: var(--cream);
}

.patent-card img {
  width: 100%;
  max-height: 430px;
  object-fit: contain;
  object-position: top;
  filter: saturate(0.65) contrast(1.03);
}

.patent-card > div {
  align-self: end;
}

.patent-card span {
  color: #668400;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.patent-card h3 {
  margin: 18px 0 0;
  font-size: 18px;
  line-height: 1.4;
}

.patent-card p {
  margin: 18px 0 0;
  color: rgba(9, 19, 15, 0.64);
  font-size: 13px;
  line-height: 1.6;
}

.validation-block {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 80px;
  margin-top: 120px;
  padding: 80px;
  background: var(--acid);
}

.validation-copy ul {
  margin: 42px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(9, 19, 15, 0.28);
}

.validation-copy li {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 18px;
  padding: 15px 0;
  border-bottom: 1px solid rgba(9, 19, 15, 0.28);
  font-size: 14px;
  line-height: 1.5;
}

.validation-images {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  align-items: start;
}

.validation-images figure {
  min-width: 0;
  min-height: 370px;
  display: grid;
  grid-template-rows: 1fr auto;
  margin: 0;
  padding: 22px 22px 16px;
  color: var(--paper);
  background: #102219;
  box-shadow: 0 20px 45px rgba(9, 19, 15, 0.18);
}

.validation-images img {
  width: 100%;
  height: 300px;
  object-fit: contain;
  padding: 12px;
  background: #efefe7;
  border: 1px solid rgba(9, 19, 15, 0.12);
}

.validation-images figcaption {
  padding-top: 13px;
  border-top: 1px solid rgba(247, 247, 240, 0.18);
  color: rgba(247, 247, 240, 0.72);
  font-size: 12px;
  font-weight: 600;
}

.institutional-support {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 52px;
  align-items: center;
  margin-top: 18px;
  padding: 38px;
  color: var(--paper);
  background: var(--ink);
}

.support-logos {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.support-logos figure {
  height: 180px;
  display: grid;
  place-items: center;
  margin: 0;
  padding: 24px;
  background: #fff;
}

.support-logos img {
  width: 100%;
  max-width: 230px;
  max-height: 132px;
  object-fit: contain;
}

.support-logos figure:first-child img {
  max-width: 210px;
}

.institutional-support-copy .eyebrow {
  margin-bottom: 18px;
}

.institutional-support-copy > p:last-child {
  max-width: 680px;
  margin: 0;
  color: rgba(247, 247, 240, 0.82);
  font-size: 17px;
  line-height: 1.65;
}

.institutional-support-copy strong {
  color: var(--paper);
}

.contact {
  padding: 120px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  align-items: end;
}

.contact h2 {
  margin-top: 20px;
}

.contact-copy > p:last-child {
  max-width: 520px;
  margin-top: 28px;
}

.contact-card {
  display: block;
  padding: 34px 0 0;
  border-top: 1px solid rgba(9, 19, 15, 0.4);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.contact-card:hover {
  border-top-color: rgba(9, 19, 15, 0.8);
}

.contact-label {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.contact-email {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-top: 20px;
  padding-bottom: 34px;
  border-bottom: 1px solid rgba(9, 19, 15, 0.4);
  font-size: clamp(18px, 2vw, 27px);
  font-weight: 700;
}

.contact-email i {
  font-style: normal;
  transition: transform 0.25s ease;
}

.contact-card:hover .contact-email i {
  transform: translate(5px, -5px);
}

.company-data {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  margin-top: 25px;
  color: rgba(9, 19, 15, 0.62);
  font-size: 12px;
}

.company-data p {
  margin: 0;
}

.site-footer {
  padding: 32px 0;
  color: var(--paper);
  background: var(--ink);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  align-items: center;
  gap: 30px;
}

.footer-inner > p {
  margin: 0;
  color: rgba(247, 247, 240, 0.42);
  font-size: 11px;
}

.footer-inner > p:last-child {
  text-align: right;
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

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

@keyframes scrollLine {
  0% { transform: translateX(-105%); }
  55%, 100% { transform: translateX(235%); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (max-width: 1160px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .hero-copy {
    position: relative;
    z-index: 3;
  }

  .hero-visual {
    min-height: 600px;
    margin-top: 35px;
  }

  .intro-grid {
    grid-template-columns: 0.35fr 1.65fr;
  }

  .intro-statement {
    grid-column: 2;
    max-width: 450px;
  }

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

  .process-step:nth-child(2) {
    border-right: 0;
  }

  .process-step:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-light);
  }

  .benefits-grid,
  .scale-grid {
    gap: 65px;
  }

  .proof-top {
    grid-template-columns: 1fr;
    gap: 0;
  }
}

@media (max-width: 820px) {
  :root {
    --container: min(100% - 32px, 720px);
  }

  .site-header {
    height: 70px;
  }

  .menu-toggle {
    position: relative;
    z-index: 52;
    display: grid;
    gap: 7px;
    width: 42px;
    height: 42px;
    place-content: center;
    padding: 0;
    color: inherit;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
  }

  .menu-toggle span:not(.sr-only) {
    display: block;
    width: 16px;
    height: 1px;
    background: currentColor;
    transition: transform 0.25s ease;
  }

  .menu-toggle[aria-expanded="true"] span:first-child {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-child(2) {
    transform: translateY(-4px) rotate(-45deg);
  }

  .main-nav {
    position: fixed;
    inset: 0;
    z-index: 51;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 26px;
    padding: 80px 24px;
    color: var(--paper);
    background: var(--ink);
    font-family: var(--font-display);
    font-size: 22px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .main-nav .nav-cta {
    margin-top: 10px;
    padding: 14px 26px;
  }

  .hero {
    padding-top: 130px;
  }

  .hero-grid {
    min-height: 0;
  }

  .hero h1 {
    font-size: clamp(48px, 11vw, 76px);
  }

  .hero-visual {
    min-height: 600px;
    margin-top: 35px;
    transform: none;
  }

  .hero-foot {
    margin-top: 0;
  }

  .section-heading,
  .benefits-grid,
  .prototype-showcase,
  .scale-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .section-heading,
  .contact-grid {
    gap: 35px;
  }

  .benefits-grid,
  .scale-grid {
    gap: 70px;
  }

  .benefits-copy {
    position: static;
  }

  .prototype-photo {
    min-height: 580px;
  }

  .prototype-details {
    padding: 58px 45px;
  }

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

  .proof-card {
    min-height: 250px;
  }

  .proof-card h3 {
    margin-top: 38px;
  }

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

  .footer-support {
    grid-column: 1 / -1;
    grid-row: 2;
    padding-top: 16px;
    border-top: 1px solid rgba(247, 247, 240, 0.12);
  }

  .footer-inner > p:last-child {
    grid-column: 2;
    grid-row: 1;
  }

}

@media (max-width: 560px) {
  :root {
    --container: calc(100% - 28px);
  }

  .hero {
    min-height: auto;
    padding: 112px 0 34px;
  }

  .hero h1 {
    font-size: clamp(40px, 12.5vw, 58px);
    line-height: 1.08;
  }

  .hero-lead {
    font-size: 15px;
  }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
    gap: 20px;
  }

  .hero-visual {
    min-height: 510px;
    margin: 28px 0 0;
    transform: none;
  }

  .hero-product {
    width: calc(100% - 18px);
    height: 470px;
  }

  .hero-product figcaption {
    inset: auto 0 0;
    padding: 42px 20px 20px;
  }

  .metric-top { top: 20px; right: 18px; }
  .metric-bottom { top: 96px; right: 18px; bottom: auto; left: auto; }

  .hero-foot {
    margin-top: 12px;
  }

  .scroll-line {
    display: none;
  }

  .intro,
  .technology,
  .prototype,
  .scale,
  .proof,
  .benefits,
  .contact {
    padding: 88px 0;
  }

  .intro-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .intro-statement {
    grid-column: auto;
  }

  .intro-copy h2,
  .section-heading h2,
  .benefits-copy h2,
  .scale-copy h2,
  .proof-top h2,
  .contact h2 {
    font-size: clamp(34px, 10vw, 48px);
  }

  .intro-copy > p,
  .hero-lead {
    line-height: 1.6;
  }

  .process-grid {
    grid-template-columns: 1fr;
    margin-top: 55px;
  }

  .process-step,
  .process-step:nth-child(2) {
    min-height: auto;
    padding: 25px 12px 34px;
    border-right: 0;
    border-bottom: 1px solid var(--line-light);
  }

  .benefit-item {
    grid-template-columns: 35px 1fr 20px;
    gap: 12px;
  }

  .benefit-item h3 {
    font-size: 19px;
  }

  .prototype-heading {
    margin-bottom: 48px;
  }

  .prototype-photo {
    min-height: 500px;
  }

  .prototype-details {
    padding: 45px 24px;
  }

  .prototype-details dl div {
    grid-template-columns: 95px 1fr;
  }

  .scale-visual {
    padding: 36px 22px 50px;
  }

  .proof-card {
    padding: 28px;
  }

  .contact-email {
    align-items: flex-start;
    overflow-wrap: anywhere;
  }

  .company-data {
    flex-direction: column;
    gap: 8px;
  }

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

  .footer-support {
    grid-column: 1;
    grid-row: auto;
  }

  .footer-inner > p:last-child {
    grid-column: 1;
    grid-row: auto;
    text-align: left;
  }

}

@media (max-width: 1050px) {
  .city-grid,
  .constraints-grid {
    gap: 60px;
  }

  .calculation-head {
    grid-template-columns: 0.34fr 1fr;
  }

  .calculation-head > p:last-child {
    grid-column: 2;
  }

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

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

  .patent-card img {
    max-height: 340px;
  }

  .validation-block {
    gap: 50px;
    padding: 55px;
  }

  .institutional-support {
    grid-template-columns: 1fr;
    gap: 30px;
    padding: 32px;
  }
}

@media (max-width: 820px) {
  .city-context,
  .landscape,
  .comparison,
  .constraints,
  .research-gallery {
    padding: 100px 0;
  }

  .city-grid,
  .landscape-head,
  .gallery-heading,
  .constraints-grid,
  .anatomy,
  .validation-block {
    grid-template-columns: 1fr;
  }

  .city-photo {
    min-height: 520px;
  }

  .city-photo img {
    height: 520px;
  }

  .landscape-head,
  .gallery-heading,
  .constraints-grid,
  .validation-block {
    gap: 44px;
  }

  .comparison-row {
    grid-template-columns: 0.72fr 1fr 1fr;
  }

  .comparison-row > * {
    padding: 22px;
  }

  .comparison-row strong {
    font-size: 16px;
  }

  .anatomy-copy {
    padding: 58px 45px;
  }

  .anatomy-visual {
    min-height: 560px;
  }

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

  .gallery-grid figure:last-child {
    grid-column: 1 / -1;
    height: 460px;
  }

  .calculation-head,
  .patents-head {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .calculation-head > p:last-child {
    grid-column: auto;
    max-width: 580px;
    margin-top: 20px;
  }

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

  .engineering-grid,
  .patent-grid {
    grid-template-columns: 1fr;
  }

  .engineering-grid figure {
    min-height: 420px;
  }

  .patents-head {
    gap: 14px;
  }

  .validation-images {
    max-width: 650px;
  }
}

@media (max-width: 560px) {
  .city-context,
  .landscape,
  .comparison,
  .constraints,
  .research-gallery {
    padding: 82px 0;
  }

  .city-copy h2,
  .landscape-head h2,
  .constraints-heading h2,
  .gallery-heading h2,
  .calculation-head h2,
  .patents-head h2,
  .validation-copy h2 {
    font-size: clamp(32px, 9.5vw, 45px);
  }

  .city-photo,
  .city-photo img {
    min-height: 410px;
    height: 410px;
  }

  .city-stat {
    grid-template-columns: max-content minmax(0, 1fr);
    gap: 20px;
  }

  .city-stat strong {
    font-size: 42px;
  }

  .system-list {
    grid-template-columns: 1fr;
    margin-top: 55px;
  }

  .system-list li {
    min-height: 125px;
    padding: 24px 18px;
  }

  .comparison-table {
    margin-top: 52px;
    border-left: 0;
  }

  .comparison-row,
  .comparison-header {
    display: block;
  }

  .comparison-header {
    display: none;
  }

  .comparison-row {
    margin-bottom: 14px;
    border-left: 1px solid var(--line-light);
  }

  .comparison-row > * {
    padding: 22px;
  }

  .comparison-row > div:not(:first-child)::before {
    display: block;
    margin-bottom: 12px;
    color: rgba(9, 19, 15, 0.42);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
  }

  .comparison-row > div:nth-child(2)::before {
    content: "Сильные стороны";
  }

  .comparison-row > div:nth-child(3)::before {
    content: "Инженерные ограничения";
  }

  .comparison-row small {
    margin-bottom: 20px;
  }

  .anatomy {
    margin-top: 70px;
  }

  .anatomy-copy {
    padding: 42px 24px;
  }

  .anatomy-visual {
    min-height: 390px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 25px;
  }

  .anatomy-visual figcaption {
    position: static;
    align-self: stretch;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid rgba(9, 19, 15, 0.12);
    text-align: right;
  }

  .anatomy-visual::before {
    width: 260px;
    height: 260px;
  }

  .constraint-list article {
    grid-template-columns: 35px 1fr;
    gap: 10px;
  }

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

  .gallery-grid figure,
  .gallery-grid figure:nth-child(2),
  .gallery-grid figure:last-child {
    grid-column: auto;
    height: 500px;
    margin-top: 0;
  }

  .gallery-grid figure:nth-child(2) img {
    object-position: center 24%;
  }

  .calculation-block {
    margin-top: 90px;
    padding-top: 82px;
  }

  .calculation-steps {
    grid-template-columns: 1fr;
    margin-top: 50px;
  }

  .calculation-steps > div {
    min-height: auto;
  }

  .calculation-steps span {
    margin-bottom: 30px;
  }

  .engineering-grid figure {
    min-height: 300px;
    padding: 38px 24px 58px;
  }

  .patents-head {
    margin-top: 90px;
    padding-top: 82px;
  }

  .patent-card {
    padding: 24px;
  }

  .patent-card img {
    max-height: 390px;
  }

  .validation-block {
    margin-top: 80px;
    padding: 42px 24px;
  }

  .institutional-support {
    gap: 24px;
    margin-top: 12px;
    padding: 24px;
  }

  .support-logos {
    gap: 8px;
  }

  .support-logos figure {
    height: 128px;
    padding: 12px;
  }

  .support-logos img {
    max-height: 96px;
  }

  .institutional-support-copy > p:last-child {
    font-size: 14px;
    line-height: 1.65;
  }

  .validation-images {
    grid-template-columns: 1fr;
  }

  .validation-images figure {
    min-height: 330px;
  }

  .validation-images img {
    height: 255px;
  }

  .process-step > span {
    font-size: 52px;
  }

  .process-kicker {
    margin: 30px 0 34px;
  }
}