:root {
  --yellow: #fde047;
  --black: #0a0a0a;
  --deep: #171717;
  --charcoal: #262626;
  --white: #ffffff;
  --muted: #a3a3a3;
  --display: Impact, "Arial Black", "Microsoft YaHei", sans-serif;
  --body: Inter, "Segoe UI", "Microsoft YaHei", sans-serif;
  --mono: "Cascadia Mono", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--black); }
body { margin: 0; overflow-x: hidden; color: var(--white); background: var(--black); font-family: var(--body); }
a { color: inherit; text-decoration: none; }
img { display: block; width: 100%; }

.site-header {
  position: fixed; z-index: 40; top: 16px; left: 50%; width: min(1240px, calc(100% - 96px)); min-height: 64px;
  display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 9px 12px 9px 20px;
  border-radius: 999px; background: rgba(10,10,10,.86); box-shadow: 0 14px 38px rgba(0,0,0,.32);
  backdrop-filter: blur(18px); transform: translateX(-50%);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { display: grid; width: 36px; height: 36px; place-items: center; border-radius: 48% 52% 57% 43%; color: var(--black); background: var(--yellow); font: 900 20px var(--display); transform: rotate(-7deg); }
.brand b, .brand small { display: block; }
.brand b { font-size: 14px; letter-spacing: .04em; }
.brand small { margin-top: 3px; color: #777; font: 7px var(--mono); letter-spacing: .16em; }
.site-header > nav { display: flex; gap: 26px; font: 700 10px var(--mono); }
.site-header > nav a { transition: color .2s; }
.site-header > nav a:hover { color: var(--yellow); }
.nav-cta, .button, .text-button { display: inline-flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-cta { padding: 13px 17px; border-radius: 999px; color: var(--black); background: var(--yellow); font: 800 10px var(--mono); }
.mobile-nav { display: none; position: relative; }
.mobile-nav summary { padding: 10px 14px; border-radius: 999px; color: var(--black); background: var(--yellow); font: 800 10px var(--mono); cursor: pointer; list-style: none; }
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav nav { position: absolute; top: calc(100% + 12px); right: 0; width: 184px; display: grid; padding: 10px 16px; border-radius: 28px 8px 28px 8px; color: var(--white); background: rgba(10,10,10,.98); box-shadow: 0 18px 40px rgba(0,0,0,.35); }
.mobile-nav nav a { padding: 12px 0; border-bottom: 1px solid #3b3b3b; font: 700 10px var(--mono); text-transform: uppercase; }
.mobile-nav nav a:last-child { border-bottom: 0; }

.page-index { position: fixed; z-index: 25; top: 50%; left: 15px; display: grid; justify-items: center; gap: 10px; transform: translateY(-50%); }
.page-index > span { color: #666; font: 7px var(--mono); letter-spacing: .16em; writing-mode: vertical-rl; }
.page-index nav { display: grid; gap: 3px; padding: 5px; border-radius: 18px; background: rgba(23,23,23,.9); backdrop-filter: blur(10px); }
.page-index a { display: grid; width: 28px; height: 28px; place-items: center; border-radius: 50%; color: #777; font: 8px var(--mono); transition: color .2s, background .2s; }
.page-index a:hover { color: var(--black); background: var(--yellow); }

section { position: relative; min-height: 840px; padding: 126px max(7vw, 88px) 92px; overflow: clip; scroll-margin-top: 0; }
.dark { color: var(--white); background: var(--black); }
.light { color: var(--black); background: var(--white); }
.yellow { color: var(--black); background: var(--yellow); }
.section-code { display: flex; align-items: flex-start; gap: 17px; margin-bottom: 26px; }
.section-code b { color: var(--yellow); font: 900 48px/.82 var(--display); letter-spacing: -.04em; }
.light .section-code b, .yellow .section-code b { color: var(--black); }
.section-code span { padding-top: 7px; font: 700 8px var(--mono); letter-spacing: .17em; text-transform: uppercase; }
h1, h2 { margin: 0; font-family: var(--display); font-weight: 900; letter-spacing: -.055em; line-height: .91; text-transform: uppercase; }
h1 { font-size: clamp(72px, 8vw, 126px); }
h2 { font-size: clamp(56px, 6.3vw, 94px); }
h1 em, h2 em { color: var(--yellow); font-style: normal; }
.light h2 em { color: #ad8d00; }
.yellow h2 em { color: var(--white); }
p { line-height: 1.85; }
.button { min-width: 230px; padding: 16px 19px; border-radius: 999px; color: var(--black); background: var(--yellow); font: 800 10px var(--mono); transition: transform .2s; }
.button:hover, .text-button:hover { transform: translateX(7px); }
.button.inverse { color: var(--white); background: var(--black); }
.actions { display: flex; align-items: center; gap: 26px; margin-top: 30px; }
.line-link { padding: 8px 0; border-bottom: 1px solid var(--white); font: 700 10px var(--mono); }

.media { position: relative; z-index: 2; margin: 0; overflow: hidden; background: var(--deep); }
.media img { height: 100%; object-fit: cover; transition: transform .55s; }
.media:hover img { transform: scale(1.025); }

.hero { min-height: 960px; display: grid; grid-template-columns: .88fr 1.12fr; align-items: center; gap: 4.5vw; padding-top: 142px; }
.hero::before { position: absolute; right: -8vw; bottom: -11vw; width: 44vw; height: 34vw; border-radius: 62% 38% 24% 76% / 45% 62% 38% 55%; content: ""; background: var(--yellow); transform: rotate(-11deg); }
.hero-copy { position: relative; z-index: 4; }
.hero-copy > p { max-width: 610px; color: var(--muted); font-size: 13px; }
.hero-media { height: 630px; border-radius: 46% 54% 31% 69% / 32% 41% 59% 68%; }
.signal-card { position: absolute; z-index: 5; right: 7vw; bottom: 42px; width: 350px; padding: 21px; border-radius: 34px 12px 34px 12px; background: rgba(23,23,23,.88); box-shadow: 0 20px 45px rgba(0,0,0,.35); backdrop-filter: blur(18px); }
.signal-card small, .signal-card strong, .signal-card span { display: block; }
.signal-card small { color: var(--yellow); font: 8px var(--mono); letter-spacing: .15em; }
.signal-card strong { margin: 10px 0 7px; font: 800 21px var(--display); }
.signal-card span { color: #a5a5a5; font-size: 10px; line-height: 1.7; }

.products { min-height: 920px; display: grid; grid-template-columns: .8fr 1.2fr; grid-template-rows: 1fr auto; gap: 34px 5vw; align-items: center; }
.products::before { position: absolute; top: -100px; left: -10vw; width: 38vw; height: 240px; border-radius: 40% 60% 70% 30%; content: ""; background: var(--yellow); transform: rotate(8deg); }
.section-heading { position: relative; z-index: 3; }
.section-heading p { max-width: 540px; color: #555; font-size: 13px; }
.text-button { margin-top: 16px; padding: 14px 18px; border-radius: 999px; color: var(--white); background: var(--black); font: 800 10px var(--mono); transition: transform .2s; }
.products-media { height: 590px; border-radius: 18% 42% 18% 42% / 28% 14% 34% 18%; }
.product-notes { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.product-notes article { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; padding: 18px; border-radius: 28px 8px 28px 8px; color: var(--white); background: var(--black); }
.product-notes span { grid-row: 1 / 3; color: var(--yellow); font: 900 34px var(--display); }
.product-notes strong { font-size: 14px; }
.product-notes small { color: #777; font: 8px var(--mono); }

.application { min-height: 1040px; display: grid; grid-template-columns: .84fr 1.16fr; grid-template-rows: auto 1fr; gap: 34px 5vw; align-items: center; }
.application::after { position: absolute; right: -14vw; bottom: -11vw; width: 50vw; height: 28vw; border-radius: 48% 52% 64% 36%; content: ""; background: var(--white); transform: rotate(-7deg); }
.application-copy { position: relative; z-index: 4; }
.application-copy > p { max-width: 620px; font-size: 13px; }
.boundary-strip { display: grid; gap: 8px; margin-top: 25px; }
.boundary-strip span { padding: 13px 16px; border-radius: 999px; background: rgba(255,255,255,.72); font: 800 9px var(--mono); }
.application-media { height: 520px; border-radius: 58% 42% 25% 75% / 42% 22% 78% 58%; }
.family-media { grid-column: 1 / -1; z-index: 3; height: 410px; border-radius: 40px 120px 40px 120px; }

.process { min-height: 920px; display: grid; grid-template-columns: 1.12fr .88fr; gap: 6vw; align-items: center; }
.process-media { height: 650px; border-radius: 22px 180px 22px 180px; }
.process-copy { position: relative; z-index: 3; }
.process-copy > p { color: var(--muted); font-size: 12px; }
.process-list { display: grid; grid-template-columns: 1fr 1fr; margin-top: 25px; gap: 9px; }
.process-list span { min-height: 94px; padding: 15px; border-radius: 26px 8px 26px 8px; color: #bdbdbd; background: var(--deep); font-size: 10px; line-height: 1.65; }
.process-list b { display: block; margin-bottom: 7px; color: var(--yellow); font: 800 9px var(--mono); }

.quality { min-height: 980px; display: grid; grid-template-columns: .8fr 1.2fr; grid-template-rows: auto 1fr; gap: 32px 5vw; }
.quality::after { position: absolute; left: -12vw; bottom: -12vw; width: 40vw; height: 32vw; border-radius: 71% 29% 46% 54%; content: ""; background: var(--yellow); transform: rotate(12deg); }
.quality-title { grid-column: 1 / -1; position: relative; z-index: 3; }
.quality-title p { max-width: 700px; color: #555; font-size: 12px; }
.quality-media { height: 590px; border-radius: 80px 18px 80px 18px; }
.pending-panel { position: relative; z-index: 3; align-self: center; display: grid; gap: 10px; }
.pending-panel span { display: flex; justify-content: space-between; gap: 20px; padding: 19px; border-radius: 999px; color: var(--white); background: var(--black); font: 800 10px var(--mono); }
.pending-panel strong { color: var(--yellow); font-size: 9px; }

.development { min-height: 920px; display: grid; grid-template-columns: .9fr 1.1fr; gap: 6vw; align-items: center; }
.development::before { position: absolute; top: 10%; right: -11vw; width: 36vw; height: 32vw; border-radius: 38% 62% 47% 53%; content: ""; background: var(--yellow); }
.development-copy { position: relative; z-index: 4; }
.development-copy > p { max-width: 650px; color: var(--muted); font-size: 12px; }
.signal-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 27px; }
.signal-grid article { padding: 20px; border-radius: 34px 10px 34px 10px; background: rgba(38,38,38,.82); box-shadow: 0 18px 45px rgba(0,0,0,.3); backdrop-filter: blur(15px); }
.signal-grid small, .signal-grid strong, .signal-grid span { display: block; }
.signal-grid small { color: var(--yellow); font: 8px var(--mono); }
.signal-grid strong { margin: 9px 0; font-size: 15px; }
.signal-grid span { color: #888; font-size: 9px; }
.development-media { height: 630px; border-radius: 28% 72% 34% 66% / 62% 30% 70% 38%; }

.sources { min-height: 920px; display: grid; grid-template-columns: .82fr 1.18fr; gap: 5vw; align-items: center; }
.sources-title { position: relative; z-index: 3; }
.source-list { border-top: 2px solid var(--black); }
.source-list article { display: grid; grid-template-columns: 126px 1fr 38px; gap: 14px; align-items: center; padding: 19px 0; border-bottom: 2px solid var(--black); }
.source-list span { color: #9c8100; font: 800 8px var(--mono); }
.source-list strong { font-size: 13px; }
.source-list i { font: 800 8px var(--mono); font-style: normal; }
.fact-boundary { grid-column: 1 / -1; padding: 24px 28px; border-radius: 42px 14px 42px 14px; color: var(--white); background: var(--black); }
.fact-boundary h3 { margin: 0 0 8px; color: var(--yellow); font: 800 12px var(--mono); }
.fact-boundary p { margin: 0; color: #999; font-size: 10px; }

.contact { min-height: 980px; display: grid; grid-template-columns: 1.08fr .92fr; gap: 6vw; align-items: center; padding-bottom: 155px; }
.contact::before { position: absolute; top: -90px; right: -12vw; width: 48vw; height: 230px; border-radius: 50%; content: ""; background: var(--black); transform: rotate(-7deg); }
.contact-media { height: 650px; border-radius: 30px 190px 30px 190px; }
.contact-copy { position: relative; z-index: 3; }
.contact-copy > p { max-width: 570px; font-size: 12px; }
.contact footer { position: absolute; right: max(7vw,88px); bottom: 34px; left: max(7vw,88px); display: flex; justify-content: space-between; padding-top: 16px; border-top: 2px solid var(--black); font: 8px var(--mono); letter-spacing: .06em; }

@media (max-width: 1050px) {
  .site-header { width: calc(100% - 36px); }
  .site-header > nav, .page-index, .nav-cta { display: none; }
  .mobile-nav { display: block; }
  .mobile-nav nav { display: grid; }
  section { padding-right: 5vw; padding-left: 5vw; }
  .hero { grid-template-columns: 1fr; }
  .hero-media { height: 500px; }
  .signal-card { right: 5vw; }
  .contact footer { right: 5vw; left: 5vw; }
}

@media (max-width: 720px) {
  .site-header { top: 9px; min-height: 56px; padding: 8px 10px 8px 13px; }
  .brand-mark { width: 32px; height: 32px; }
  .brand b { font-size: 11px; }
  .brand small { display: none; }
  .nav-cta { padding: 11px 12px; }
  section { min-height: auto; padding: 96px 20px 72px; }
  h1 { font-size: 55px; }
  h2 { font-size: 46px; }
  .section-code { margin-bottom: 20px; }
  .section-code b { font-size: 36px; }
  .hero { display: flex; min-height: 980px; flex-direction: column; align-items: stretch; gap: 28px; padding-top: 112px; }
  .hero::before { right: -42vw; bottom: 4%; width: 95vw; height: 68vw; }
  .hero-media { height: 360px; border-radius: 28% 72% 22% 78% / 30% 42% 58% 70%; }
  .actions { align-items: flex-start; flex-direction: column; gap: 15px; }
  .signal-card { position: relative; right: auto; bottom: auto; width: 100%; }
  .products, .application, .process, .quality, .development, .sources, .contact { display: flex; flex-direction: column; gap: 28px; }
  .products::before { width: 72vw; }
  .products-media, .application-media, .family-media, .process-media, .quality-media, .development-media, .contact-media { width: 100%; height: 350px; }
  .product-notes { display: grid; grid-template-columns: 1fr; width: 100%; }
  .application-media { order: 2; }
  .family-media { order: 3; }
  .process-copy { order: 1; }
  .process-media { order: 2; }
  .process-list, .signal-grid { grid-template-columns: 1fr; }
  .quality-title { order: 1; }
  .quality-media { order: 2; }
  .pending-panel { order: 3; width: 100%; }
  .pending-panel span { align-items: flex-start; flex-direction: column; border-radius: 24px 8px 24px 8px; }
  .development-copy { order: 1; }
  .development-media { order: 2; }
  .source-list { width: 100%; }
  .source-list article { grid-template-columns: 1fr auto; gap: 8px; }
  .source-list span { grid-column: 1 / -1; }
  .source-list strong { font-size: 12px; }
  .fact-boundary { width: 100%; }
  .contact { padding-bottom: 145px; }
  .contact-copy { order: 1; }
  .contact-media { order: 2; }
  .contact footer { right: 20px; bottom: 27px; left: 20px; flex-direction: column; gap: 8px; line-height: 1.5; }
}

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