:root {
  color-scheme: dark;
  --bg: #061225;
  --bg-deep: #030b17;
  --surface: #0a1a30;
  --surface-2: #0d223d;
  --line: rgba(133, 177, 220, 0.2);
  --line-strong: rgba(67, 211, 255, 0.42);
  --text: #f5f9fd;
  --muted: #9aafc4;
  --blue: #2e8fff;
  --blue-action: #1269b8;
  --blue-action-hover: #1976d2;
  --cyan: #43d3ff;
  --cyan-soft: #b7eeff;
  --steel: #6e859c;
  --max: 1220px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
.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;
}
body {
  margin: 0;
  background:
    radial-gradient(circle at 82% 5%, rgba(46, 143, 255, 0.12), transparent 30rem),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-deep) 100%);
  color: var(--text);
  font-family: Inter, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
a, button { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 4px; }
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--cyan);
  color: var(--bg-deep);
}
.skip-link:focus { top: 16px; }

.site-header {
  width: min(calc(100% - 48px), var(--max));
  min-height: 84px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}
.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 760;
  letter-spacing: 0.02em;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--cyan);
  color: var(--cyan);
  background: rgba(67, 211, 255, 0.04);
  font: 700 11px/1 ui-monospace, "Cascadia Code", monospace;
  clip-path: polygon(0 0, 82% 0, 100% 18%, 100% 100%, 18% 100%, 0 82%);
}
nav { display: flex; align-items: center; gap: 20px; color: #b4c6d7; font-size: 13px; }
nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 4px;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}
nav a:hover, nav a:focus-visible { color: var(--cyan); }
.product-link { padding: 0 14px; border: 1px solid var(--line); }
.primary-link { border-color: var(--line-strong); background: rgba(46, 143, 255, 0.08); }
.nav-toggle {
  display: none;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
}

.hero {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  padding: 58px 0 78px;
}
.hero-artwork-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1731 / 909;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: #031126;
  box-shadow: 0 34px 90px rgba(0, 0, 0, 0.32), 0 0 52px rgba(46, 143, 255, 0.09);
}
.hero-artwork-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(183, 238, 255, 0.07);
}
.hero-artwork {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1731 / 909;
  object-fit: contain;
}
.hero-support {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(420px, 0.9fr);
  align-items: end;
  gap: 64px;
  padding: 30px 0 0;
  border-bottom: 1px solid var(--line);
}
.hero-summary {
  padding-bottom: 30px;
}
.eyebrow {
  margin: 0 0 20px;
  color: var(--cyan);
  font: 700 11px/1.5 ui-monospace, "Cascadia Code", monospace;
  letter-spacing: 0.18em;
}
.signal {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 10px;
  border: 1px solid var(--cyan);
  background: rgba(67, 211, 255, 0.2);
  box-shadow: 0 0 18px rgba(67, 211, 255, 0.65);
}
.hero-lead { max-width: 700px; margin: 0; color: #b4c4d4; font-size: 16px; }
.hero-action-panel { padding: 0 0 30px; }
.hero-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px; }
.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 2px;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}
.button:hover, .button:focus-visible { transform: translateY(-2px); border-color: var(--cyan); }
.button.primary { background: var(--blue-action); color: #fff; border-color: var(--blue-action); font-weight: 730; }
.button.primary:hover, .button.primary:focus-visible { background: var(--blue-action-hover); }
.button.secondary { background: rgba(10, 26, 48, 0.62); color: var(--text); }
.hero-facts { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 22px; margin: 20px 0 0; padding: 0; list-style: none; color: #8fa6bc; font-size: 12px; }
.hero-facts li { display: flex; align-items: center; gap: 8px; }
.hero-facts span { color: var(--cyan); font: 700 9px ui-monospace, monospace; }

.context-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.context-strip article { padding: 34px; border-right: 1px solid var(--line); }
.context-strip article:last-child { border: 0; }
.context-strip span, .card-code, .capability-code, .product-label { color: var(--cyan); font: 700 9px ui-monospace, monospace; letter-spacing: 0.15em; }
.context-strip h2 { margin: 10px 0 5px; font-size: 19px; }
.context-strip p { margin: 0; color: var(--muted); font-size: 13px; }

.section { width: min(calc(100% - 48px), var(--max)); margin: 0 auto; padding: 132px 0; }
.section-heading { max-width: 720px; margin-bottom: 54px; }
.section-heading h2, .site-boundary h2 { margin: 0; font-size: clamp(34px, 4vw, 56px); line-height: 1.12; letter-spacing: -0.04em; }
.section-heading > p:last-child { color: var(--muted); font-size: 16px; }
.split-heading { max-width: none; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 80px; align-items: end; }
.split-heading > p { margin: 0 0 6px; color: var(--muted); }

.industrial-context { display: grid; grid-template-columns: 0.95fr 1.05fr; gap: 100px; border-bottom: 1px solid var(--line); }
.industrial-context .section-heading { margin: 0; }
.context-copy { padding-top: 7px; }
.context-intro { margin: 0 0 34px; color: #bccbd8; font-size: 18px; }
.context-points { border-top: 1px solid var(--line); }
.context-points article { display: grid; grid-template-columns: 48px 1fr; gap: 14px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.context-points span { color: var(--cyan); font: 700 9px ui-monospace, monospace; }
.context-points h3 { margin: 0 0 5px; font-size: 16px; }
.context-points p { margin: 0; color: var(--muted); font-size: 14px; }

.workflow-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.workflow-card { position: relative; overflow: hidden; border: 1px solid var(--line); background: linear-gradient(145deg, rgba(13, 34, 61, 0.92), rgba(6, 18, 37, 0.94)); }
.workflow-card::before { content: ""; position: absolute; top: 0; right: 0; width: 110px; height: 110px; background: linear-gradient(135deg, transparent 49%, rgba(67, 211, 255, 0.12) 50%, transparent 51%); }
.workflow-card header { min-height: 300px; padding: 36px; border-bottom: 1px solid var(--line); }
.card-index { position: absolute; top: 28px; right: 30px; color: rgba(183, 238, 255, 0.22); font: 500 52px/1 ui-monospace, monospace; }
.workflow-card h3 { max-width: 360px; margin: 72px 0 12px; font-size: 30px; letter-spacing: -0.025em; }
.workflow-card header > p:last-child { max-width: 500px; margin: 0; color: var(--muted); }
.workflow-steps { margin: 0; padding: 0; list-style: none; }
.workflow-steps li { display: grid; grid-template-columns: 52px 1fr; gap: 12px; padding: 20px 30px; border-bottom: 1px solid var(--line); }
.workflow-steps li > span { color: var(--cyan); font: 700 9px ui-monospace, monospace; }
.workflow-steps strong, .workflow-steps small { display: block; }
.workflow-steps strong { font-size: 14px; }
.workflow-steps small { margin-top: 3px; color: #829ab1; font-size: 12px; }
.boundary-note { margin: 0; padding: 24px 30px 28px; color: #90a6bb; font-size: 13px; }
.boundary-note strong { color: var(--cyan-soft); }

.control-loop { border-top: 1px solid var(--line); }
.loop-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin: 0; padding: 1px; list-style: none; background: var(--line); }
.loop-grid li { min-height: 210px; padding: 27px; background: var(--surface); }
.loop-grid li:nth-child(1), .loop-grid li:nth-child(7) { background: linear-gradient(145deg, var(--surface-2), var(--surface)); }
.loop-grid span { display: block; color: var(--cyan); font: 700 9px ui-monospace, monospace; }
.loop-grid strong { display: block; margin-top: 48px; font: 650 20px ui-monospace, "Cascadia Code", monospace; }
.loop-grid p { margin: 8px 0 0; color: var(--muted); font-size: 13px; }

.capabilities { border-top: 1px solid var(--line); }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.capability-grid article { min-height: 350px; padding: 30px; border-right: 1px solid var(--line); }
.capability-grid article:last-child { border: 0; }
.capability-grid h3 { margin: 54px 0 20px; font-size: 20px; }
.capability-grid ul { margin: 0; padding: 0; list-style: none; }
.capability-grid li { position: relative; padding: 9px 0 9px 16px; border-top: 1px solid rgba(133, 177, 220, 0.12); color: var(--muted); font-size: 13px; }
.capability-grid li::before { content: "+"; position: absolute; left: 0; color: var(--cyan); }

.ecosystem { border-top: 1px solid var(--line); }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.product-card { min-height: 320px; padding: 34px; display: flex; flex-direction: column; border: 1px solid var(--line); background: rgba(10, 26, 48, 0.72); transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease; }
a.product-card:hover, a.product-card:focus-visible { transform: translateY(-4px); border-color: var(--cyan); background: var(--surface-2); }
.ai-product { border-color: var(--line-strong); background: radial-gradient(circle at 100% 0, rgba(46, 143, 255, 0.14), transparent 50%), var(--surface); }
.product-card h3 { margin: 74px 0 10px; font-size: 24px; }
.product-card > p:not(.product-label) { margin: 0; color: var(--muted); }
.product-action, .current-site { margin-top: auto; padding-top: 32px; color: var(--cyan); font: 700 11px ui-monospace, monospace; letter-spacing: 0.08em; }
.current-site { color: #7d98af; }

.site-boundary { margin-bottom: 84px; padding: 70px; display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 80px; border: 1px solid var(--line-strong); background: linear-gradient(120deg, rgba(46, 143, 255, 0.08), rgba(10, 26, 48, 0.52)); }
.boundary-copy > p { margin-top: 0; color: #bdcbd8; font-size: 17px; }
.boundary-copy ul { margin: 24px 0 0; padding: 0; list-style: none; }
.boundary-copy li { position: relative; padding: 12px 0 12px 24px; border-top: 1px solid var(--line); color: var(--muted); }
.boundary-copy li::before { content: "—"; position: absolute; left: 0; color: var(--cyan); }

footer {
  width: min(calc(100% - 48px), var(--max));
  margin: 0 auto;
  padding: 38px 0 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  color: #718aa2;
  font-size: 12px;
}
.brand.compact { color: var(--text); }
.brand.compact .brand-mark { width: 29px; height: 29px; font-size: 9px; }

@media (max-width: 1020px) {
  nav { gap: 12px; }
  nav > a:not(.product-link) { display: none; }
  .hero-support { grid-template-columns: 1fr; gap: 0; }
  .hero-summary { padding-bottom: 20px; }
  .hero-action-panel { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
  .hero-actions, .hero-facts { justify-content: flex-start; }
  .hero-facts { margin: 0; }
  .industrial-context { grid-template-columns: 1fr; gap: 44px; }
  .workflow-card header { min-height: 330px; }
  .loop-grid, .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid article:nth-child(2) { border-right: 0; }
  .capability-grid article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .site-boundary { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 760px) {
  .site-header { position: relative; }
  .nav-toggle { display: block; }
  nav {
    display: none;
    position: absolute;
    z-index: 20;
    top: 70px;
    left: 0;
    right: 0;
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    border: 1px solid var(--line-strong);
    background: rgba(6, 18, 37, 0.98);
    box-shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
  }
  nav.open { display: flex; }
  nav > a:not(.product-link) { display: flex; }
  nav a { width: 100%; padding: 0 14px; }
  .hero { padding: 40px 0 68px; }
  .hero-action-panel { display: block; }
  .hero-facts { margin-top: 20px; }
  .context-strip, .workflow-grid, .product-grid { grid-template-columns: 1fr; }
  .context-strip article { border-right: 0; border-bottom: 1px solid var(--line); }
  .context-strip article:last-child { border-bottom: 0; }
  .split-heading { grid-template-columns: 1fr; gap: 24px; }
  .workflow-card header { min-height: auto; }
  .site-boundary { padding: 46px 34px; }
  footer { flex-wrap: wrap; gap: 14px 26px; }
}

@media (max-width: 540px) {
  .site-header, .hero, .context-strip, .section, footer { width: min(calc(100% - 28px), var(--max)); }
  .site-header { min-height: 70px; }
  .hero-lead { font-size: 16px; }
  .hero-actions .button { width: 100%; }
  .hero-facts { display: grid; gap: 10px; }
  .hero-artwork-frame { box-shadow: 0 20px 44px rgba(0, 0, 0, 0.28); }
  .section { padding: 92px 0; }
  .loop-grid, .capability-grid { grid-template-columns: 1fr; }
  .loop-grid li { min-height: 180px; }
  .capability-grid article { min-height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-grid article:nth-child(3) { border-bottom: 1px solid var(--line); }
  .workflow-card header, .workflow-steps li, .boundary-note { padding-left: 23px; padding-right: 23px; }
  .site-boundary { padding: 38px 24px; }
  footer p { width: 100%; margin: 0; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}