:root {
  --obsidian: #111210;
  --obsidian-soft: #1a1c19;
  --arctic: #f0f0eb;
  --white: #fafaf7;
  --sand: #b99568;
  --sand-light: #d8c6ad;
  --warm: #d8d2c8;
  --ink: #171815;
  --muted: #6f716b;
  --line: rgba(22, 23, 20, 0.18);
  --header-h: 76px;
  --pad: clamp(24px, 4vw, 68px);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--obsidian);
  font-family: "Helvetica Neue", "Nimbus Sans", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  -webkit-font-smoothing: antialiased;
}
html, body { width: 100%; max-width: 100%; overflow-x: clip; }

body.menu-open { overflow: hidden; }
img { display: block; width: 100%; }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { color: inherit; }
::selection { color: var(--obsidian); background: var(--sand-light); }
:focus-visible { outline: 2px solid var(--sand); outline-offset: 4px; }
.no-js .loader { display: none; }
.no-js [data-reveal] { opacity: 1; transform: none; }

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: var(--obsidian);
  background: var(--white);
  transform: translateY(-150%);
  transition: transform 0.2s;
}
.skip-link:focus { transform: translateY(0); }

.loader {
  position: fixed;
  z-index: 999;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--obsidian);
  transition: opacity 0.7s var(--ease), visibility 0.7s;
}
.loader.is-hidden { opacity: 0; visibility: hidden; }
.loader__word { color: var(--white); font-size: 16px; letter-spacing: .34em; text-transform: uppercase; animation: breathe 1.2s ease-in-out infinite; }
.loader__line {
  position: absolute;
  bottom: 10vh;
  width: 160px;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.15);
}
.loader__line span { display: block; width: 100%; height: 100%; background: var(--white); animation: load 1.15s var(--ease) both; }

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  color: var(--white);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  transition: color 0.35s, background 0.35s, transform 0.35s, border-color 0.35s;
}
.site-header.is-scrolled {
  color: var(--ink);
  background: rgba(240, 240, 235, 0.92);
  border-color: var(--line);
  backdrop-filter: blur(16px);
}
.site-header.is-hidden { transform: translateY(-100%); }

.brand { display: inline-flex; align-items: center; gap: 15px; text-transform: uppercase; }
.brand > span { font-size: 18px; letter-spacing: 0.29em; }
.brand .tm-mark { margin-left: .14em; font-size: .44em; line-height: 0; letter-spacing: 0; vertical-align: super; }
.site-nav { display: flex; align-items: center; gap: clamp(20px, 2.5vw, 44px); }
.site-nav a { position: relative; font-size: 12px; letter-spacing: 0.08em; }
.site-nav > a:not(.nav-cta)::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 1px; background: currentColor; transition: right 0.3s var(--ease);
}
.site-nav > a:hover::after { right: 0; }
.nav-cta { padding: 12px 16px; border: 1px solid currentColor; }
.nav-cta span { margin-left: 20px; }
.menu-toggle { display: none; border: 0; background: none; }

.hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  display: grid;
  align-items: end;
  padding: calc(var(--header-h) + 60px) var(--pad) clamp(90px, 11vh, 140px);
  color: var(--white);
  background: var(--obsidian);
}
.hero__media, .hero__media::after, .hero__veil { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; object-position: center; animation: heroDrift 16s ease-out both; }
.hero__media--hq { background: #222421; }
.hero__media--hq img { object-position: center; filter: saturate(.78) contrast(1.03) brightness(.9); }
.hero__media::after { content: ""; background: linear-gradient(90deg, rgba(10, 12, 12, 0.82) 0%, rgba(10, 12, 12, 0.52) 37%, rgba(10, 12, 12, 0.02) 72%); }
.hero__veil { background: linear-gradient(0deg, rgba(10, 11, 10, 0.56), transparent 40%, rgba(10, 11, 10, 0.2)); }
.hero__content { position: relative; z-index: 2; width: 100%; min-width: 0; max-width: 880px; }
.eyebrow { margin: 0 0 26px; font-size: 11px; line-height: 1.2; letter-spacing: 0.18em; text-transform: uppercase; }
.eyebrow--sand { color: var(--sand-light); }
.hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(66px, 10.3vw, 164px);
  font-weight: 300;
  line-height: 0.82;
  letter-spacing: -0.068em;
}
.hero h1 span { color: transparent; -webkit-text-stroke: 1px rgba(255, 255, 255, 0.72); }
.hero__lede { max-width: 560px; margin: 42px 0 0; font-size: clamp(17px, 1.55vw, 22px); font-weight: 300; line-height: 1.55; }
.hero__actions { display: flex; align-items: center; gap: 34px; margin-top: 36px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; min-width: 245px; padding: 15px 18px; font-size: 12px; letter-spacing: 0.04em; }
.button--light { color: var(--obsidian); background: var(--white); }
.button span { transition: transform 0.25s; }
.button:hover span { transform: translateY(3px); }
.text-link { font-size: 12px; padding-block: 10px; border-bottom: 1px solid rgba(255, 255, 255, 0.45); }
.text-link span { margin-left: 24px; }
.hero__telemetry {
  position: absolute;
  z-index: 2;
  top: calc(var(--header-h) + 25px);
  right: var(--pad);
  display: flex;
  gap: 24px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 9px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.68;
}
.hero__status {
  position: absolute;
  z-index: 2;
  right: var(--pad);
  bottom: 34px;
  display: flex;
  align-items: center;
  gap: 10px;
  width: min(350px, 34vw);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: #a9d48d; box-shadow: 0 0 0 5px rgba(169, 212, 141, 0.14); }
.hero__status-index { margin-left: auto; font-family: ui-monospace, monospace; }

.reveal { opacity: 0; transform: translateY(34px); animation: rise 0.95s var(--ease) 1s both; }
.reveal--delay-1 { animation-delay: 1.08s; }
.reveal--delay-2 { animation-delay: 1.18s; }
.reveal--delay-3 { animation-delay: 1.28s; }

.section { position: relative; padding: clamp(110px, 14vw, 220px) var(--pad); overflow: hidden; }
.section--arctic { background: var(--arctic); }
.section--obsidian { color: var(--white); background: var(--obsidian); }
.section--warm { background: var(--warm); }
.section-index {
  position: absolute;
  top: 40px;
  left: var(--pad);
  right: var(--pad);
  padding-top: 13px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 10px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}
.section-index--light { color: rgba(255, 255, 255, 0.45); border-color: rgba(255, 255, 255, 0.16); }
.display { margin: 0; color: var(--white); font-size: clamp(52px, 7.5vw, 120px); font-weight: 300; line-height: 0.95; letter-spacing: -0.058em; }
.display--dark { color: var(--ink); }
.display em { color: var(--sand); font-weight: inherit; font-style: normal; }
.body-large { max-width: 650px; margin: 48px 0 0; font-size: clamp(19px, 2vw, 28px); font-weight: 300; line-height: 1.45; }
.body-large--light { color: rgba(255, 255, 255, 0.75); }
[data-reveal] { opacity: 0; transform: translateY(45px); transition: opacity 0.9s var(--ease), transform 0.9s var(--ease); }
[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

.manifesto__grid { display: grid; grid-template-columns: minmax(150px, 0.8fr) 3fr; gap: 6vw; }
.manifesto__grid > .eyebrow { padding-top: 12px; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: clamp(100px, 12vw, 180px); background: var(--line); border-block: 1px solid var(--line); }
.principles article { position: relative; min-height: 280px; padding: 30px; background: var(--arctic); }
.principles article > span { font: 10px ui-monospace, monospace; color: var(--muted); }
.principles h3 { margin: 86px 0 14px; font-size: 20px; font-weight: 400; letter-spacing: -0.02em; }
.principles p { max-width: 330px; margin: 0; color: var(--muted); font-size: 14px; }

.flow { min-height: 980px; display: grid; grid-template-columns: 1.1fr 0.9fr; align-items: center; gap: 8vw; }
.flow__copy { position: relative; z-index: 2; padding-top: 80px; }
.flow .section-index { grid-column: 1 / -1; }
.flow__orb { position: relative; z-index: 1; aspect-ratio: 1; display: grid; place-items: center; }
.flow__orb::before, .flow__orb::after { content: ""; position: absolute; inset: 7%; border: 1px solid rgba(255, 255, 255, 0.12); border-radius: 50%; }
.flow__orb::after { inset: 24%; border-style: dashed; }
.rotor { position: absolute; inset: 13%; animation: rotorSpin 34s linear infinite; }
.rotor--rear { opacity: 0.15; transform: rotate(18deg); animation-direction: reverse; animation-duration: 48s; }
.rotor i { position: absolute; top: 50%; left: 50%; width: 47%; height: 12%; border-radius: 100% 12% 72% 18%; background: linear-gradient(165deg, #444944, #0a0b0a 68%); transform-origin: 0 50%; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.08), 0 18px 40px rgba(0, 0, 0, 0.3); }
.rotor i:nth-child(1) { transform: translateY(-50%) rotate(0deg); }
.rotor i:nth-child(2) { transform: translateY(-50%) rotate(90deg); }
.rotor i:nth-child(3) { transform: translateY(-50%) rotate(180deg); }
.rotor i:nth-child(4) { transform: translateY(-50%) rotate(270deg); }
.flow__hub { z-index: 3; width: 17%; aspect-ratio: 1; display: grid; place-items: center; border: 1px solid rgba(255, 255, 255, 0.4); border-radius: 50%; background: radial-gradient(circle, #8b8c86, #252724 70%); box-shadow: 0 0 0 20px rgba(255,255,255,.035), 0 30px 70px rgba(0,0,0,.45); }
.flow__hub span { color: rgba(255, 255, 255, 0.78); font: 8px ui-monospace, monospace; letter-spacing: .16em; text-transform: uppercase; }
.spec-list { margin: 70px 0 0; border-top: 1px solid rgba(255, 255, 255, 0.18); }
.spec-list div { display: grid; grid-template-columns: 1fr 1.35fr; padding: 16px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.18); }
.spec-list dt { color: rgba(255, 255, 255, 0.45); font: 10px ui-monospace, monospace; text-transform: uppercase; letter-spacing: 0.1em; }
.spec-list dd { margin: 0; font-size: 13px; }
.evidence-note { max-width: 440px; margin-top: 22px; color: rgba(255, 255, 255, 0.4); font-size: 11px; }

.machine { display: grid; grid-template-columns: 0.78fr 1.22fr; gap: 7vw; padding-bottom: 100px; }
.machine__headline { position: relative; z-index: 2; padding-top: 65px; }
.machine__visual { margin: 80px -12vw 0 0; overflow: hidden; }
.machine__visual img { aspect-ratio: 1.4; object-fit: cover; object-position: center; filter: saturate(0.82) contrast(1.02); }
.machine__visual figcaption { padding-top: 11px; color: var(--muted); font: 9px ui-monospace, monospace; text-transform: uppercase; letter-spacing: 0.08em; }
.machine__details { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); gap: 7vw; margin-top: 100px; }
.machine__details h3 { margin: 24px 0 12px; font-size: 16px; font-weight: 500; }
.machine__details p { margin: 0; color: #66665f; font-size: 14px; }
.detail-line { display: block; width: 100%; height: 1px; background: rgba(20, 20, 18, 0.35); }

.system__intro { display: grid; grid-template-columns: 0.7fr 2.2fr; gap: 6vw; }
.system__visual { position: relative; aspect-ratio: 1.78; margin: 100px calc(var(--pad) * -1) 0; overflow: hidden; background: #d8d6d0; }
.colourway-stage {
  position: absolute;
  inset: 0;
  background-image: url("assets/air-arctic-hq-v2.png");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  transition: opacity .35s var(--ease), filter .55s var(--ease);
}
.system__visual[data-active="sand"] .colourway-stage { background-image: url("assets/air-sand-hq-v2.png"); }
.system__visual[data-active="obsidian"] .colourway-stage { background-image: url("assets/hero-obsidian-hq-v2.png"); }
.colour-picker { position: absolute; right: var(--pad); bottom: 30px; display: flex; gap: 8px; padding: 7px; background: rgba(245, 245, 240, 0.9); backdrop-filter: blur(12px); }
.colour-picker button { display: flex; align-items: center; gap: 8px; padding: 8px 11px; border: 1px solid transparent; background: none; font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; cursor: pointer; }
.colour-picker button.is-active { border-color: rgba(20,20,18,.28); }
.colour-picker i { display: block; width: 11px; height: 11px; border: 1px solid #aaa; background: #ecebe6; }
.colour-picker button:nth-child(2) i { background: #b6956c; }
.colour-picker button:nth-child(3) i { background: #161715; }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); margin-top: 90px; }
.product-grid article { position: relative; min-height: 190px; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.product-grid article:first-child { grid-column: span 2; }
.product-grid span { font-size: 25px; font-weight: 300; text-transform: uppercase; letter-spacing: 0.06em; }
.product-grid p { position: absolute; left: 24px; bottom: 20px; margin: 0; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; }
.product-grid i { position: absolute; right: 20px; top: 22px; color: var(--muted); font: normal 9px ui-monospace, monospace; }

.programme__grid { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 10vw; align-items: end; }
.programme__copy { color: rgba(255, 255, 255, 0.65); font-size: clamp(16px, 1.6vw, 21px); font-weight: 300; }
.programme__copy p + p { margin-top: 28px; }
.timeline { display: grid; grid-template-columns: repeat(5, 1fr); padding: 0; margin: 130px 0 0; list-style: none; border-top: 1px solid rgba(255,255,255,.22); }
.timeline li { position: relative; min-height: 170px; padding: 24px 20px 0 0; border-right: 1px solid rgba(255,255,255,.15); }
.timeline li::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; border-radius: 50%; background: #444742; }
.timeline li.is-current::before { background: var(--sand-light); box-shadow: 0 0 0 7px rgba(216,198,173,.12); }
.timeline li > span { color: rgba(255,255,255,.35); font: 9px ui-monospace, monospace; }
.timeline div { position: absolute; left: 0; bottom: 20px; display: grid; gap: 5px; }
.timeline strong { font-size: 13px; font-weight: 400; }
.timeline small { max-width: 150px; color: rgba(255,255,255,.38); font-size: 10px; }

.contact { min-height: 760px; display: grid; place-items: center; color: var(--ink); background: var(--sand-light); }
.contact__backdrop { position: absolute; inset: 0; background: radial-gradient(circle at 85% 20%, rgba(255,255,255,.55), transparent 25%), linear-gradient(130deg, transparent 44%, rgba(255,255,255,.2) 44.2%, transparent 44.4%); }
.contact__backdrop::after { content: "+"; position: absolute; right: 7vw; top: 20%; color: rgba(17,18,16,.11); font-size: min(34vw, 520px); font-weight: 100; line-height: .5; }
.contact__content { position: relative; z-index: 2; width: min(100%, 1100px); }
.contact__content > p:not(.eyebrow) { margin: 36px 0; font-size: 18px; }
.interest-form { max-width: 690px; margin-top: 50px; }
.interest-form--pending { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 18px 0; border-block: 1px solid rgba(20,20,18,.45); }
.interest-form--pending span { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }
.interest-form--pending button { padding: 11px 16px; border: 1px solid rgba(20,20,18,.25); color: rgba(20,20,18,.52); background: transparent; font-size: 10px; letter-spacing: .08em; text-transform: uppercase; cursor: not-allowed; }

.site-footer { display: grid; grid-template-columns: 1.2fr .8fr 1fr; gap: 30px; align-items: start; padding: 70px var(--pad) 28px; color: rgba(255,255,255,.6); background: var(--obsidian); border-top: 1px solid rgba(255,255,255,.1); font-size: 11px; }
.brand--footer { color: var(--white); }
.site-footer p { margin: 4px 0; }
.site-footer > div { display: flex; justify-content: flex-end; gap: 28px; }
.site-footer > div a { border-bottom: 1px solid rgba(255,255,255,.25); }
.site-footer small { grid-column: 1 / -1; margin-top: 80px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.1); font-size: 9px; }

@keyframes load { from { transform: translateX(-100%); } to { transform: translateX(0); } }
@keyframes breathe { 50% { transform: rotate(45deg) scale(.8); opacity: .45; } }
@keyframes rise { to { opacity: 1; transform: translateY(0); } }
@keyframes heroDrift { from { transform: scale(1.07); } to { transform: scale(1); } }
@keyframes rotorSpin { to { transform: rotate(360deg); } }

@media (max-width: 1000px) {
  .menu-toggle { z-index: 3; display: flex; align-items: center; gap: 12px; padding: 8px 0; border: 0; background: none; font-size: 10px; text-transform: uppercase; letter-spacing: .12em; }
  .menu-toggle i { width: 20px; height: 1px; background: currentColor; box-shadow: 0 5px currentColor; transition: transform .3s, box-shadow .3s; }
  .menu-open .menu-toggle { color: var(--white); }
  .menu-open .menu-toggle i { transform: rotate(45deg); box-shadow: 0 0 currentColor; }
  .site-nav { position: fixed; z-index: 2; inset: 0; display: flex; visibility: hidden; flex-direction: column; justify-content: center; align-items: flex-start; gap: 26px; padding: 90px 28px; color: var(--white); background: rgba(16,17,15,.97); transform: translateY(-100%); transition: transform .55s var(--ease), visibility 0s .55s; }
  .menu-open .site-nav { visibility: visible; transform: translateY(0); transition-delay: 0s; }
  .site-nav > a:not(.nav-cta) { display: block; font-size: clamp(30px, 7vw, 54px); font-weight: 300; letter-spacing: -.03em; }
  .nav-cta { margin-top: 20px; font-size: 14px !important; }
  .flow { min-height: auto; grid-template-columns: 1fr; }
  .flow__orb { width: min(100%, 680px); margin: 0 auto -5vw; }
  .flow__copy { max-width: 700px; }
  .machine { grid-template-columns: 1fr; }
  .machine__visual { margin: 60px -12vw 0 14vw; }
  .machine__details { grid-column: auto; }
  .programme__grid { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  :root { --header-h: 66px; }
  .site-header { padding-inline: 20px; }
  .brand > span { font-size: 15px; }
  .site-nav > a:not(.nav-cta) { font-size: clamp(30px, 10vw, 54px); }
  .hero { padding-inline: 22px; padding-bottom: 110px; }
  .hero { grid-template-columns: minmax(0, 1fr); }
  .hero__content { width: 100%; max-width: calc(100vw - 44px); overflow: hidden; }
  .hero__media--hq img { object-position: 68% center; }
  .hero__media::after { background: linear-gradient(90deg, rgba(10,12,12,.79), rgba(10,12,12,.16)), linear-gradient(0deg, rgba(10,12,12,.78), transparent 60%); }
  .hero__telemetry { right: 22px; left: 22px; justify-content: space-between; }
  .hero__telemetry span:nth-child(n+2) { display: none; }
  .hero h1 { font-size: clamp(58px, 18vw, 78px); }
  .hero h1 span { font-size: .82em; white-space: nowrap; }
  .hero__lede { width: 100%; max-width: 330px; margin-top: 30px; font-size: 15px; overflow-wrap: anywhere; }
  .hero__actions { align-items: flex-start; flex-direction: column; gap: 14px; margin-top: 28px; }
  .hero__status { right: 22px; left: 22px; width: auto; }
  .section { padding-inline: 22px; }
  .section-index { right: 22px; left: 22px; }
  .manifesto__grid, .system__intro { grid-template-columns: 1fr; }
  .display { font-size: clamp(48px, 14vw, 78px); }
  .body-large { margin-top: 34px; }
  .principles { grid-template-columns: 1fr; }
  .principles article { min-height: 220px; }
  .principles h3 { margin-top: 54px; }
  .flow { padding-top: 150px; gap: 70px; }
  .flow__orb { width: 130%; margin-left: -15%; }
  .machine__visual { margin: 40px -22px 0; }
  .machine__visual img { aspect-ratio: .95; object-position: 64% center; }
  .machine__details { grid-template-columns: 1fr; margin-top: 70px; }
  .system__visual { margin-inline: -22px; }
  .system__visual { aspect-ratio: .82; }
  .colourway-stage { background-size: cover; background-position: 62% center; }
  .colour-picker { right: 12px; bottom: 12px; }
  .colour-picker button { padding: 8px; font-size: 0; }
  .colour-picker i { width: 17px; height: 17px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid article:first-child { grid-column: span 2; }
  .product-grid article { min-height: 150px; padding: 18px; }
  .product-grid span { font-size: 19px; }
  .timeline { grid-template-columns: 1fr; border-top: 0; border-left: 1px solid rgba(255,255,255,.2); margin-left: 4px; }
  .timeline li { min-height: 110px; padding: 0 0 0 25px; border-right: 0; }
  .timeline li::before { top: 4px; left: -5px; }
  .timeline div { position: static; margin-top: 16px; }
  .contact { min-height: 700px; }
  .interest-form--pending { align-items: flex-start; flex-direction: column; }
  .site-footer { grid-template-columns: 1fr; padding-inline: 22px; }
  .site-footer > div { justify-content: flex-start; flex-wrap: wrap; }
  .site-footer small { grid-column: auto; margin-top: 50px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}