:root {
  --black: #050505;
  --surface: #111111;
  --white: #ffffff;
  --muted: #999999;
  --cyan: #06b6d4;
  --pink: #ec4899;
  --purple: #7c3aed;
  --border: rgba(255, 255, 255, 0.13);
  --gutter: clamp(28px, 5vw, 82px);
  --rail: 76px;
  --header: 84px;
  --display: "Arial Narrow", "Roboto Condensed", "Microsoft YaHei", sans-serif;
  --body: Inter, "Microsoft YaHei", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--black); }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--white);
  background: var(--black);
  font-family: var(--body);
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; height: 100%; object-fit: cover; }
figure, h1, h2, h3, p, dl, dd, ul { margin: 0; }

.site-header {
  position: fixed;
  inset: 0 0 auto var(--rail);
  z-index: 20;
  height: var(--header);
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  background: rgba(5, 5, 5, 0.62);
  backdrop-filter: blur(8px);
  mix-blend-mode: difference;
}
.brand { display: flex; align-items: center; gap: 13px; font-weight: 800; letter-spacing: -.03em; }
.brand-mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255,255,255,.38);
  border-radius: 50%;
  font: 900 12px/1 var(--display);
  letter-spacing: .06em;
}
.site-header nav { display: flex; gap: 30px; color: #d7d7d7; font-size: 12px; }
.site-header nav a, .text-action { transition: color .2s ease; }
.site-header nav a:hover, .text-action:hover { color: var(--cyan); }
.header-cta, .primary-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  min-height: 46px;
  padding: 0 20px;
  border: 1px solid transparent;
  border-image: linear-gradient(90deg, var(--cyan), var(--pink)) 1;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: rgba(255,255,255,.02);
  transition: transform .2s ease, background .2s ease;
}
.header-cta:hover, .primary-action:hover { transform: scale(1.02); background: rgba(255,255,255,.07); }
.header-cta svg, .primary-action svg, .scroll-cue svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.5; }

.section-rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 30;
  width: var(--rail);
  display: grid;
  grid-template-rows: repeat(8, 1fr);
  border-right: 1px solid var(--border);
  background: rgba(5,5,5,.74);
  backdrop-filter: blur(8px);
}
.section-rail a {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  color: #666;
  transition: color .2s ease, background .2s ease;
}
.section-rail a:hover { color: var(--white); background: rgba(255,255,255,.04); }
.section-rail b { font: 900 20px/1 var(--display); letter-spacing: -.05em; }
.section-rail a:first-child b { color: var(--cyan); }
.section-rail span { font-size: 9px; letter-spacing: .1em; }

main { margin-left: var(--rail); }
main > section {
  position: relative;
  min-height: 820px;
  padding: calc(var(--header) + 46px) var(--gutter) 76px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  isolation: isolate;
}
.section-label {
  display: flex;
  align-items: center;
  gap: 13px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
}
.section-label span { color: var(--cyan); font-size: 17px; letter-spacing: 0; }
h1, h2 {
  font-family: var(--display);
  font-weight: 900;
  letter-spacing: -.07em;
  text-transform: uppercase;
}
h1 { margin-top: 34px; font-size: clamp(72px, 9vw, 142px); line-height: .78; }
h2 { margin-top: 24px; font-size: clamp(56px, 7vw, 108px); line-height: .84; }
h1 em, h2 em {
  color: transparent;
  background: linear-gradient(90deg, var(--cyan), var(--purple) 50%, var(--pink));
  -webkit-background-clip: text;
  background-clip: text;
  font-style: normal;
}
.lead, .section-heading > p, .material-intro > p, .application-copy > p, .manufacturing-copy > p, .quality-head > p, .development-copy > p, .contact-copy > p {
  max-width: 650px;
  color: #b8b8b8;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.9;
}
.text-action { display: inline-block; margin-top: 26px; font-size: 12px; font-weight: 700; letter-spacing: .1em; }

.hero { min-height: 920px; padding-top: calc(var(--header) + 78px); display: grid; grid-template-columns: .88fr 1.25fr; align-items: center; gap: 4vw; }
.hero::before, .development::before {
  content: "";
  position: absolute;
  z-index: -1;
  width: 46vw;
  aspect-ratio: 1;
  right: -14vw;
  top: 6vh;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,.24), rgba(236,72,153,.08) 42%, transparent 70%);
  filter: blur(32px);
}
.hero-copy { position: relative; z-index: 3; }
.hero .lead { margin-top: 34px; max-width: 610px; }
.hero-actions { display: flex; align-items: center; gap: 26px; margin-top: 34px; }
.disclosure { margin-top: 24px; color: #777; font-size: 11px; letter-spacing: .08em; }
.hero-media { position: relative; perspective: 2000px; }
.perspective-frame { position: relative; min-height: 560px; transform-style: preserve-3d; transform: rotateY(-7deg) rotateX(2deg); transition: transform .35s ease; }
.perspective-frame:hover { transform: rotateY(-3deg) rotateX(0); }
.hero-media figure { position: absolute; inset: 7% 0 4% 3%; overflow: hidden; border: 1px solid var(--border); border-radius: 2px; transform: translateZ(46px); }
.hero-media figure::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 72%, rgba(236,72,153,.08)); pointer-events: none; }
.glass-plane { position: absolute; display: block; width: 43%; height: 76%; border: 1px solid rgba(255,255,255,.2); background: rgba(17,17,17,.08); backdrop-filter: blur(3px); }
.plane-one { right: 11%; top: 0; transform: translateZ(95px) rotateY(-5deg); }
.plane-two { right: -2%; bottom: 0; transform: translateZ(16px) rotateY(9deg); border-color: rgba(236,72,153,.42); }
figcaption {
  position: absolute;
  z-index: 4;
  right: 12px;
  bottom: 12px;
  padding: 7px 10px;
  border: 1px solid rgba(255,255,255,.16);
  background: rgba(5,5,5,.72);
  backdrop-filter: blur(8px);
  color: #d2d2d2;
  font-size: 10px;
  letter-spacing: .05em;
}
.hero-record {
  position: absolute;
  left: -4%;
  bottom: 1%;
  z-index: 6;
  display: grid;
  gap: 5px;
  padding: 18px 22px;
  border: 1px solid var(--border);
  background: rgba(17,17,17,.62);
  backdrop-filter: blur(8px);
}
.hero-record span { color: var(--cyan); font-size: 9px; letter-spacing: .18em; }
.hero-record b { font: 900 22px/1 var(--display); }
.hero-record small { color: var(--muted); }
.scroll-cue { position: absolute; left: var(--gutter); bottom: 34px; display: flex; align-items: center; gap: 12px; color: #777; font-size: 9px; letter-spacing: .16em; }

.scope { display: grid; grid-template-columns: .78fr 1.22fr; grid-template-rows: 1fr auto; gap: 42px 5vw; align-items: center; }
.section-heading > p { margin-top: 28px; }
.wide-figure, .material-stage, .application-figure, .manufacturing-figure, .quality-figure, .development-visual figure, .contact-figure { position: relative; overflow: hidden; border: 1px solid var(--border); }
.wide-figure { height: 570px; }
.scope-list { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--border); }
.scope-list div { padding: 26px 0; display: flex; justify-content: space-between; gap: 30px; border-bottom: 1px solid var(--border); }
.scope-list div:first-child { padding-right: 3vw; border-right: 1px solid var(--border); }
.scope-list div:last-child { padding-left: 3vw; }
.scope-list dt { font: 900 28px/1 var(--display); text-transform: uppercase; }
.scope-list dd { color: var(--muted); font-size: 12px; }

.materials { min-height: 900px; display: grid; grid-template-columns: 1fr; grid-template-rows: auto 1fr auto; }
.material-intro { display: grid; grid-template-columns: .56fr 1.1fr .9fr; align-items: end; gap: 3vw; }
.material-intro .section-label { align-self: start; }
.material-intro h2 { margin: 0; }
.material-stage { height: 500px; margin-top: 44px; }
.material-stage img { object-position: center 58%; }
.material-legend { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--border); border-top: 0; }
.material-legend div { padding: 21px 24px; display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.material-legend div + div { border-left: 1px solid var(--border); }
.material-legend b { font: 900 19px/1 var(--display); }
.material-legend span { color: var(--muted); font-size: 11px; }

.applications { min-height: 860px; padding-right: 0; display: grid; grid-template-columns: 1.22fr .78fr; align-items: stretch; gap: 0; }
.application-figure { min-height: 620px; border-left: 0; }
.application-copy { padding: 7vh var(--gutter) 4vh 5vw; display: flex; flex-direction: column; justify-content: center; }
.application-copy > p { margin-top: 28px; }
.pending-grid { margin-top: 34px; border-top: 1px solid var(--border); }
.pending-grid div { padding: 17px 0; display: flex; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--border); font-size: 12px; }
.pending-grid span { color: var(--muted); }
.pending-grid b { color: var(--pink); font-weight: 500; }

.manufacturing { min-height: 890px; display: grid; grid-template-columns: .82fr 1.18fr; gap: 5vw; align-items: center; }
.manufacturing-copy > p { margin-top: 28px; }
.manufacturing-figure { height: 630px; }
.record-list { margin-top: 34px; padding: 0; list-style: none; border-top: 1px solid var(--border); }
.record-list li { padding: 17px 0; display: flex; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--border); font-size: 12px; }
.record-list span { color: var(--muted); }
.record-list b { color: var(--cyan); font-weight: 500; }

.quality { min-height: 940px; display: grid; grid-template-columns: 1fr 1fr; grid-template-rows: auto 1fr; gap: 44px 5vw; }
.quality-head { grid-column: 1 / -1; display: grid; grid-template-columns: .45fr 1fr .75fr; gap: 4vw; align-items: end; }
.quality-head h2 { margin: 0; }
.quality-figure { height: 540px; }
.quality-ledger { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--border); border-left: 1px solid var(--border); }
.quality-ledger div { position: relative; min-height: 210px; padding: 28px; display: flex; flex-direction: column; justify-content: flex-end; gap: 8px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); background: rgba(255,255,255,.015); backdrop-filter: blur(8px); }
.quality-ledger span { color: var(--muted); font-size: 11px; letter-spacing: .08em; }
.quality-ledger b { font: 900 19px/1.2 var(--display); }
.quality-ledger i { position: absolute; top: 20px; right: 20px; color: var(--pink); font-style: normal; font-size: 11px; }

.development { min-height: 1040px; display: grid; grid-template-columns: 1.02fr .98fr; gap: 5vw; align-items: center; }
.development::before { left: -17vw; top: 22%; right: auto; background: radial-gradient(circle, rgba(6,182,212,.22), rgba(124,58,237,.08) 45%, transparent 70%); }
.development-visual { position: relative; }
.development-visual figure { height: 720px; border-radius: 50% 50% 0 0; }
.orbital { position: absolute; width: 118%; aspect-ratio: 1; left: -9%; top: -17%; border-radius: 50%; border: 1px solid rgba(6,182,212,.58); transform: rotateX(68deg) rotateZ(-8deg); }
.orbital::after { content: ""; position: absolute; inset: 8%; border: 1px solid rgba(236,72,153,.48); border-radius: 50%; }
.development-copy > p { margin-top: 28px; }
.sources { margin-top: 34px; border-top: 1px solid var(--border); }
.sources h3 { padding: 16px 0; color: var(--muted); font-size: 10px; letter-spacing: .18em; }
.sources a { display: grid; grid-template-columns: 34px 1fr auto; gap: 14px; align-items: center; padding: 14px 0; border-top: 1px solid rgba(255,255,255,.08); transition: color .2s ease, transform .2s ease; }
.sources a:hover { color: var(--cyan); transform: translateX(4px); }
.sources a span { color: var(--pink); font-size: 10px; }
.sources a b { font-size: 12px; }
.sources a small { color: var(--muted); font-size: 10px; text-align: right; }

.contact { min-height: 980px; padding-bottom: 0; display: grid; grid-template-columns: .82fr 1.18fr; grid-template-rows: 1fr auto; gap: 0 5vw; align-items: center; }
.contact-copy > p { margin-top: 28px; }
.contact-fields { margin: 32px 0; border-top: 1px solid var(--border); }
.contact-fields div { display: flex; justify-content: space-between; gap: 24px; padding: 17px 0; border-bottom: 1px solid var(--border); font-size: 12px; }
.contact-fields dt { color: var(--muted); }
.contact-fields dd { color: var(--pink); }
.contact-figure { height: 610px; }
.contact footer {
  grid-column: 1 / -1;
  margin-top: 58px;
  min-height: 180px;
  padding: 42px 0;
  display: grid;
  grid-template-columns: 1.2fr 1fr auto;
  align-items: end;
  gap: 28px;
  border-top: 1px solid var(--border);
}
.contact footer b { font: 900 clamp(35px, 5vw, 78px)/.9 var(--display); letter-spacing: -.06em; }
.contact footer span, .contact footer small { color: var(--muted); font-size: 10px; letter-spacing: .08em; }

@media (max-width: 1000px) {
  :root { --rail: 58px; --header: 72px; }
  .site-header nav { display: none; }
  .hero, .scope, .manufacturing, .development, .contact { grid-template-columns: 1fr; }
  .hero { padding-top: calc(var(--header) + 64px); }
  .hero-media { margin-top: 28px; }
  .perspective-frame { min-height: 480px; }
  .scope { grid-template-rows: auto auto auto; }
  .scope-list { grid-column: 1; }
  .material-intro, .quality-head { grid-template-columns: 1fr; align-items: start; }
  .material-intro h2, .quality-head h2 { margin-top: 20px; }
  .applications { padding-right: var(--gutter); grid-template-columns: 1fr; }
  .application-copy { order: -1; padding: 0 0 42px; }
  .quality { grid-template-columns: 1fr; }
  .quality-head { grid-column: 1; }
  .development-visual { order: 2; margin-top: 30px; }
  .contact-figure { margin-top: 44px; }
}

@media (max-width: 680px) {
  :root { --rail: 0px; --header: 66px; --gutter: 20px; }
  .section-rail { display: none; }
  main { margin-left: 0; }
  .site-header { left: 0; padding: 0 16px; }
  .brand { font-size: 11px; gap: 8px; }
  .brand-mark { width: 29px; height: 29px; }
  .header-cta { min-height: 38px; padding: 0 12px; gap: 8px; font-size: 10px; }
  .header-cta svg { width: 14px; }
  main > section { min-height: auto; padding-top: calc(var(--header) + 48px); padding-bottom: 62px; }
  h1 { font-size: clamp(58px, 20vw, 78px); }
  h2 { font-size: clamp(48px, 15vw, 66px); }
  .hero { display: block; min-height: 920px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 16px; }
  .hero-media { margin-top: 36px; }
  .perspective-frame { min-height: 360px; transform: none; }
  .perspective-frame:hover { transform: none; }
  .hero-media figure { inset: 8% 0 0; }
  .hero-media figure img { object-position: 60% center; }
  .glass-plane { height: 67%; }
  .hero-record { left: 10px; bottom: -24px; }
  .scroll-cue { display: none; }
  .wide-figure, .material-stage, .application-figure, .manufacturing-figure, .quality-figure, .contact-figure { height: 340px; min-height: 0; }
  .scope { display: block; }
  .wide-figure { margin-top: 36px; }
  .scope-list { margin-top: 25px; display: block; }
  .scope-list div:first-child, .scope-list div:last-child { padding: 20px 0; border-right: 0; }
  .scope-list div { align-items: flex-end; }
  .scope-list dt { font-size: 22px; }
  .scope-list dd { max-width: 140px; text-align: right; }
  .materials { display: block; }
  .material-intro { display: block; }
  .material-intro h2 { margin-top: 22px; }
  .material-intro > p { margin-top: 24px; }
  .material-stage { margin-top: 34px; height: 360px; }
  .material-stage img { object-position: center; }
  .material-legend { grid-template-columns: 1fr; }
  .material-legend div + div { border-left: 0; border-top: 1px solid var(--border); }
  .applications { display: flex; flex-direction: column; padding-right: var(--gutter); }
  .application-copy { order: -1; }
  .pending-grid div, .record-list li { align-items: flex-end; }
  .pending-grid b, .record-list b { max-width: 160px; text-align: right; }
  .manufacturing { display: block; }
  .manufacturing-figure { margin-top: 38px; }
  .quality { display: block; }
  .quality-head { display: block; }
  .quality-head h2 { margin-top: 22px; }
  .quality-head > p { margin-top: 24px; }
  .quality-figure { margin-top: 36px; }
  .quality-ledger { grid-template-columns: 1fr; margin-top: 24px; }
  .quality-ledger div { min-height: 125px; }
  .development { display: flex; flex-direction: column; }
  .development-copy { order: 1; }
  .development-visual { order: 2; width: 100%; }
  .development-visual figure { height: 420px; border-radius: 45% 45% 0 0; }
  .orbital { top: -6%; }
  .sources a { grid-template-columns: 28px 1fr; }
  .sources a small { grid-column: 2; text-align: left; }
  .contact { display: block; }
  .contact-figure { margin-top: 42px; }
  .contact footer { display: flex; flex-direction: column; align-items: flex-start; margin-top: 46px; min-height: 0; }
  .contact footer b { font-size: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

.mobile-nav { display: none; position: relative; }
.mobile-nav summary { display: grid; place-items: center; min-height: 38px; padding: 0 13px; border: 1px solid rgba(6,182,212,.48); color: #e9e9e9; font-size: 10px; cursor: pointer; list-style: none; }
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav[open] summary { border-color: var(--pink); color: #fff; }
.mobile-nav nav { position: absolute; right: 0; top: 46px; min-width: 178px; padding: 8px; border: 1px solid var(--border); background: rgba(5,5,5,.97); backdrop-filter: blur(8px); }
.mobile-nav nav a { padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,.08); color: #ddd; font-size: 11px; }
.mobile-nav nav a:last-child { border-bottom: 0; }
.sources article { display: grid; grid-template-columns: 34px 1fr auto; gap: 14px; align-items: center; padding: 14px 0; border-top: 1px solid rgba(255,255,255,.08); }
.sources article span { color: var(--pink); font-size: 10px; }
.sources article b { font-size: 12px; }
.sources article small { color: var(--muted); font-size: 10px; text-align: right; }
@media (max-width: 1000px) { .header-cta { display: none; } .mobile-nav { display: block; } .site-header .mobile-nav nav { display: grid; } }
@media (max-width: 680px) { .sources article { grid-template-columns: 28px 1fr; } .sources article small { grid-column: 2; text-align: left; } }