:root {
  color-scheme: dark;
  --bg: #05070d;
  --surface: rgba(13, 18, 31, 0.72);
  --surface-strong: #0c1220;
  --line: rgba(159, 180, 220, 0.16);
  --line-bright: rgba(119, 242, 255, 0.38);
  --text: #f4f7fb;
  --muted: #97a3ba;
  --cyan: #69efff;
  --blue: #6a8cff;
  --violet: #a879ff;
  --green: #67f4bd;
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 68% 8%, rgba(66, 83, 196, 0.18), transparent 29rem),
    radial-gradient(circle at 5% 40%, rgba(31, 177, 191, 0.08), transparent 25rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
.skip-link { position: fixed; z-index: 100; left: 1rem; top: -5rem; padding: .65rem 1rem; background: var(--text); color: var(--bg); }
.skip-link:focus { top: 1rem; }
.network-canvas { position: fixed; inset: 0; width: 100%; height: 100%; opacity: .28; pointer-events: none; z-index: -2; }
.noise { position: fixed; inset: 0; z-index: -1; opacity: .025; pointer-events: none; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E"); }

.site-header {
  width: min(calc(100% - 40px), var(--max));
  height: 84px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: .72rem; width: max-content; font-size: .95rem; font-weight: 780; letter-spacing: .08em; }
.brand b { color: var(--cyan); font-weight: 650; }
.brand-mark { width: 31px; height: 31px; position: relative; display: grid; place-items: center; transform: rotate(45deg); border: 1px solid rgba(105,239,255,.5); }
.brand-mark i { position: absolute; width: 4px; height: 4px; background: var(--cyan); border-radius: 50%; box-shadow: 0 0 12px var(--cyan); }
.brand-mark i:nth-child(1) { transform: translate(-7px, -7px); }
.brand-mark i:nth-child(2) { transform: translate(7px, -7px); background: var(--violet); }
.brand-mark i:nth-child(3) { transform: translate(7px, 7px); }
.site-header nav { display: flex; gap: 2.4rem; font-size: .82rem; color: var(--muted); }
.site-header nav a, .lang-switch { transition: color .2s ease; }
.site-header nav a:hover, .site-header nav a:focus-visible, .lang-switch:hover { color: var(--text); }
.lang-switch { justify-self: end; border: 1px solid var(--line); padding: .42rem .72rem; color: var(--muted); font-size: .75rem; letter-spacing: .12em; }

.section-shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.hero { min-height: 720px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: clamp(2rem, 6vw, 7rem); padding-block: 7rem 6rem; }
.eyebrow { display: flex; align-items: center; gap: .7rem; margin: 0 0 1.5rem; color: #91a0b9; text-transform: uppercase; font-size: .68rem; font-weight: 700; letter-spacing: .2em; }
.eyebrow span { width: 28px; height: 1px; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
h1 { margin: 0; max-width: 760px; font-size: clamp(3.2rem, 6.8vw, 6.5rem); line-height: .99; letter-spacing: -.065em; font-weight: 610; }
h1 em { color: transparent; font-style: normal; background: linear-gradient(90deg, var(--cyan), #8aa9ff 52%, #c493ff); -webkit-background-clip: text; background-clip: text; }
.hero-lede { max-width: 650px; margin: 2rem 0 0; color: #a9b4c7; font-size: clamp(1rem, 1.5vw, 1.18rem); line-height: 1.85; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2.4rem; }
.button { min-height: 50px; padding: .75rem 1.25rem; display: inline-flex; align-items: center; justify-content: center; gap: 1.4rem; border: 1px solid var(--line); font-size: .86rem; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); border-color: var(--line-bright); }
.button-primary { background: linear-gradient(135deg, rgba(75, 221, 239, .2), rgba(94, 105, 232, .22)); border-color: rgba(105,239,255,.42); }
.button-primary span { color: var(--cyan); }
.button-ghost { color: #aeb8ca; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 1.4rem; margin-top: 3rem; color: #69768e; font-size: .64rem; letter-spacing: .08em; text-transform: uppercase; }
.hero-proof span::before { content: "·"; color: var(--green); margin-right: .5rem; }

.hero-system { position: relative; min-height: 510px; padding: 1rem; border: 1px solid var(--line); background: linear-gradient(155deg, rgba(12,18,32,.86), rgba(5,8,16,.48)); box-shadow: 0 40px 90px rgba(0,0,0,.38), inset 0 0 0 1px rgba(255,255,255,.018); backdrop-filter: blur(18px); }
.hero-system::before, .hero-system::after { content: ""; position: absolute; width: 12px; height: 12px; border-color: var(--cyan); opacity: .7; }
.hero-system::before { left: -1px; top: -1px; border-left: 1px solid; border-top: 1px solid; }
.hero-system::after { right: -1px; bottom: -1px; border-right: 1px solid; border-bottom: 1px solid; }
.system-topline { display: flex; justify-content: space-between; padding: .2rem .2rem .8rem; color: #67758c; font-size: .58rem; letter-spacing: .14em; border-bottom: 1px solid var(--line); }
.status { color: var(--green); }
.status i { display: inline-block; width: 5px; height: 5px; margin-right: .4rem; border-radius: 50%; background: var(--green); box-shadow: 0 0 8px var(--green); }
.system-core { position: relative; height: 300px; display: grid; place-items: center; overflow: hidden; }
.system-core::before { content: ""; position: absolute; width: 1px; height: 100%; background: linear-gradient(transparent, var(--line-bright), transparent); }
.system-core::after { content: ""; position: absolute; width: 100%; height: 1px; background: linear-gradient(90deg, transparent, var(--line-bright), transparent); }
.orbital { position: absolute; border: 1px solid rgba(112,145,207,.2); border-radius: 50%; animation: orbit 18s linear infinite; }
.orbital-one { width: 230px; height: 230px; }
.orbital-two { width: 160px; height: 160px; animation-direction: reverse; animation-duration: 12s; border-style: dashed; }
.core-node { position: relative; z-index: 2; width: 92px; height: 92px; display: grid; place-items: center; align-content: center; border-radius: 50%; background: radial-gradient(circle at 35% 30%, rgba(105,239,255,.34), rgba(77,66,176,.28) 48%, #080c17 70%); border: 1px solid rgba(105,239,255,.5); box-shadow: 0 0 55px rgba(83,160,255,.2); }
.core-node strong { font-size: 2.2rem; line-height: 1; font-weight: 450; }
.core-node small { margin-top: .35rem; color: var(--cyan); font-size: .42rem; letter-spacing: .11em; }
.satellite { position: absolute; z-index: 2; padding: .28rem .48rem; color: #8796af; background: #090e19; border: 1px solid var(--line); font-size: .45rem; letter-spacing: .12em; }
.satellite::before { content: ""; display: inline-block; width: 4px; height: 4px; margin-right: .35rem; background: var(--cyan); border-radius: 50%; }
.satellite-a { top: 43px; right: 34px; }
.satellite-b { bottom: 42px; left: 38px; }
.satellite-c { top: 85px; left: 26px; }
.system-log { margin: 0; padding: .3rem 0 0; list-style: none; border-top: 1px solid var(--line); }
.system-log li { display: grid; grid-template-columns: 34px 1fr auto; align-items: center; min-height: 42px; border-bottom: 1px solid rgba(159,180,220,.08); font-size: .68rem; }
.system-log span { color: #59677e; font-family: ui-monospace, monospace; }
.system-log b { font-weight: 500; color: #b8c2d4; }
.system-log small { color: #667289; }

.signal-strip { border-block: 1px solid var(--line); display: grid; grid-template-columns: repeat(3,1fr); }
.signal-strip div { min-height: 80px; display: flex; align-items: center; justify-content: center; gap: .9rem; color: #a1adc0; font-size: .8rem; letter-spacing: .06em; border-right: 1px solid var(--line); }
.signal-strip div:last-child { border-right: 0; }
.signal-strip span { color: var(--cyan); font-family: ui-monospace, monospace; font-size: .62rem; }

.capabilities { padding-block: 9rem 8rem; }
.section-heading { display: grid; grid-template-columns: 1.2fr .8fr; column-gap: 4rem; align-items: end; margin-bottom: 3.6rem; }
.section-heading .eyebrow { grid-column: 1 / -1; }
h2 { margin: 0; font-size: clamp(2.3rem, 4vw, 4.2rem); line-height: 1.12; letter-spacing: -.045em; font-weight: 560; }
.section-heading > p:last-child { margin: 0; color: var(--muted); font-size: .95rem; }
.capability-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.capability-card { position: relative; min-height: 330px; padding: 2rem; background: linear-gradient(145deg, rgba(10,15,27,.98), rgba(7,10,18,.98)); overflow: hidden; }
.capability-card::after { content: ""; position: absolute; inset: auto -30% -80% 20%; height: 180px; background: radial-gradient(ellipse, rgba(90,115,255,.12), transparent 67%); transition: transform .45s ease; }
.capability-card:hover::after { transform: translateY(-35px); }
.capability-card.featured { background: linear-gradient(145deg, rgba(10,28,39,.95), rgba(12,14,30,.98)); }
.card-index { color: #536078; font-family: ui-monospace, monospace; font-size: .65rem; }
.card-icon { position: absolute; right: 2rem; top: 1.75rem; width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--line); color: var(--cyan); font-size: 1.25rem; }
.capability-card h3 { margin: 4rem 0 .8rem; font-size: 1.5rem; font-weight: 550; letter-spacing: -.02em; }
.capability-card p { max-width: 530px; margin: 0; color: var(--muted); font-size: .88rem; }
.capability-card ul { display: flex; flex-wrap: wrap; gap: .55rem; margin: 1.6rem 0 0; padding: 0; list-style: none; }
.capability-card li { padding: .28rem .55rem; color: #7f8ca3; border: 1px solid rgba(159,180,220,.11); font-size: .65rem; }
.approach, .use-cases, .principles { padding-block: 8.5rem; border-top: 1px solid var(--line); }
.approach-heading { align-items: end; }
.approach-heading > div .eyebrow, .use-cases .section-heading > div .eyebrow { margin-bottom: 1.5rem; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); margin: 4.5rem 0 0; padding: 0; list-style: none; border: 1px solid var(--line); background: var(--line); gap: 1px; counter-reset: step; }
.process-grid li { min-height: 285px; padding: 1.55rem; background: #080c15; }
.process-grid li > span { color: var(--cyan); font-family: ui-monospace, monospace; font-size: .58rem; letter-spacing: .12em; }
.process-grid h3 { margin: 5rem 0 .75rem; font-size: 1.08rem; font-weight: 560; }
.process-grid p { margin: 0; color: var(--muted); font-size: .78rem; }
.use-cases { padding-top: 7rem; }
.case-list { border-top: 1px solid var(--line); }
.case-list article { min-height: 128px; display: grid; grid-template-columns: 90px 1fr auto; align-items: center; gap: 2rem; border-bottom: 1px solid var(--line); transition: background .25s ease, padding .25s ease; }
.case-list article:hover { padding-inline: 1rem; background: rgba(89,113,186,.06); }
.case-list article > span { color: #59667d; font-family: ui-monospace, monospace; font-size: .64rem; }
.case-list h3 { margin: 0 0 .3rem; font-size: 1.15rem; font-weight: 560; }
.case-list p { margin: 0; color: var(--muted); font-size: .78rem; }
.case-list b { color: #536078; font-size: .58rem; letter-spacing: .14em; font-weight: 600; }
.principles-panel { position: relative; display: grid; grid-template-columns: .85fr 1.15fr; border: 1px solid var(--line); background: linear-gradient(135deg, rgba(14,26,39,.92), rgba(9,10,21,.96)); overflow: hidden; }
.principles-panel::before { content: ""; position: absolute; left: 8%; top: -160px; width: 360px; height: 360px; border-radius: 50%; background: rgba(63,212,235,.08); filter: blur(70px); }
.principles-copy { position: relative; padding: 4rem; border-right: 1px solid var(--line); }
.principles-copy > p:last-child { margin-top: 1.6rem; color: var(--muted); font-size: .9rem; }
.principle-items article { min-height: 150px; display: grid; grid-template-columns: 55px 1fr; align-items: center; padding: 1.7rem 2.5rem; border-bottom: 1px solid var(--line); }
.principle-items article:last-child { border-bottom: 0; }
.principle-items span { color: var(--cyan); font-family: ui-monospace, monospace; font-size: .62rem; }
.principle-items h3 { margin: 0 0 .35rem; font-size: 1rem; font-weight: 560; }
.principle-items p { margin: 0; color: var(--muted); font-size: .78rem; }
.contact { padding-block: 9rem 10rem; text-align: center; }
.contact .eyebrow { justify-content: center; }
.contact h2 { font-size: clamp(3rem, 7vw, 7rem); }
.contact > p:not(.eyebrow) { margin: 1.6rem auto 2rem; color: var(--muted); }
.contact > a { display: inline-flex; align-items: center; gap: 1rem; padding-bottom: .45rem; color: var(--cyan); border-bottom: 1px solid rgba(105,239,255,.35); font-size: clamp(1rem, 2vw, 1.35rem); }
.contact > a span { transition: transform .2s ease; }
.contact > a:hover span { transform: translate(3px,-3px); }
footer { min-height: 140px; padding: 2rem max(20px, calc((100vw - var(--max))/2)); display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--line); color: var(--muted); }
footer p { font-weight: 700; color: var(--text); }
footer div { display: flex; flex-direction: column; align-items: flex-end; gap: .3rem; font-size: .7rem; }
footer small { color: #566178; }

@keyframes orbit { to { transform: rotate(360deg); } }
@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-header nav { display: none; }
  .hero { grid-template-columns: 1fr; padding-top: 5rem; }
  .hero-copy { max-width: 700px; }
  .hero-system { max-width: 600px; width: 100%; }
  .section-heading { grid-template-columns: 1fr; gap: 1.3rem; }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .principles-panel { grid-template-columns: 1fr; }
  .principles-copy { border-right: 0; border-bottom: 1px solid var(--line); }
}
@media (max-width: 640px) {
  .site-header { width: min(calc(100% - 28px), var(--max)); height: 72px; }
  .section-shell { width: min(calc(100% - 28px), var(--max)); }
  .hero { min-height: auto; padding-block: 4.5rem; }
  h1 { font-size: clamp(3rem, 14vw, 4.6rem); }
  .hero-system { min-height: 480px; padding: .75rem; }
  .signal-strip { grid-template-columns: 1fr; }
  .signal-strip div { min-height: 58px; border-right: 0; border-bottom: 1px solid var(--line); }
  .capabilities { padding-block: 6rem; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-card { min-height: 300px; padding: 1.4rem; }
  .card-icon { right: 1.4rem; }
  .approach, .use-cases, .principles { padding-block: 6rem; }
  .process-grid { grid-template-columns: 1fr; }
  .process-grid li { min-height: 240px; }
  .process-grid h3 { margin-top: 3.7rem; }
  .case-list article { grid-template-columns: 36px 1fr; gap: .8rem; padding-block: 1.4rem; }
  .case-list article b { display: none; }
  .principles-copy { padding: 2.2rem 1.4rem; }
  .principle-items article { grid-template-columns: 42px 1fr; padding: 1.4rem; }
  .contact { padding-block: 7rem; }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; }
  footer div { align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .network-canvas { display: none; }
}

.error-page { min-height: 100vh; display: grid; place-items: center; padding: 2rem; }
.error-page main { width: min(720px, 100%); }
.error-page .brand { margin-bottom: 7rem; }
.error-code { color: var(--cyan); font-family: ui-monospace, monospace; font-size: .68rem; letter-spacing: .15em; }
.error-page h1 { margin: 1rem 0; font-size: clamp(2.7rem, 7vw, 5.5rem); }
.error-page main > p:not(.error-code) { color: var(--muted); margin-bottom: 2rem; }