:root {
  --bg: #06172f;
  --bg-2: #071b36;
  --card: rgba(15, 32, 60, 0.78);
  --card-border: rgba(148, 163, 184, 0.18);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --blue: #2563eb;
  --blue-2: #3b82f6;
  --teal: #14b8a6;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.26), transparent 38%),
    radial-gradient(circle at 80% 20%, rgba(20, 184, 166, 0.16), transparent 32%),
    linear-gradient(180deg, var(--bg), #020617 80%);
  color: var(--text);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.section-padding { padding: 96px 0; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 23, 47, 0.78);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(148, 163, 184, 0.12);
}

.navbar {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: 0.08em; }
.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue), var(--teal));
  box-shadow: 0 0 32px rgba(59, 130, 246, 0.45);
}
.brand-text { font-size: 1.05rem; }

.nav-links { display: flex; align-items: center; gap: 28px; color: var(--muted); font-weight: 600; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: 11px 18px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
}

.menu-toggle { display: none; background: none; border: 0; cursor: pointer; }
.menu-toggle span { display: block; width: 25px; height: 2px; background: var(--text); margin: 5px 0; }

.hero { position: relative; min-height: 760px; display: flex; align-items: center; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 72px; align-items: center; }
.hero-glow {
  position: absolute;
  inset: 120px 0 auto 50%;
  width: 420px;
  height: 420px;
  transform: translateX(-50%);
  background: rgba(20, 184, 166, 0.17);
  filter: blur(90px);
  border-radius: 999px;
}
.eyebrow { color: var(--teal); font-weight: 800; letter-spacing: 0.14em; text-transform: uppercase; font-size: 0.78rem; }
h1 { font-size: clamp(3rem, 7vw, 5.7rem); line-height: 0.94; margin: 18px 0 24px; letter-spacing: -0.08em; }
.hero-description { font-size: 1.18rem; line-height: 1.8; color: var(--muted); max-width: 660px; }
.hero-actions, .contact-actions { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 32px; }
.btn { padding: 15px 22px; border-radius: 999px; font-weight: 800; transition: transform .25s, box-shadow .25s, border-color .25s; }
.btn:hover { transform: translateY(-3px); }
.btn-primary { background: linear-gradient(135deg, var(--blue), var(--teal)); box-shadow: 0 18px 48px rgba(37, 99, 235, 0.32); }
.btn-secondary { border: 1px solid rgba(148, 163, 184, 0.24); background: rgba(255,255,255,.05); }
.trust-strip { margin-top: 38px; display: flex; flex-wrap: wrap; gap: 12px; color: var(--muted); }
.trust-strip span { border: 1px solid rgba(148, 163, 184, 0.15); background: rgba(255,255,255,.04); padding: 10px 14px; border-radius: 999px; }

.orbit-card {
  position: relative;
  height: 520px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 40px;
  background: linear-gradient(180deg, rgba(15, 32, 60, 0.85), rgba(2, 6, 23, 0.74));
  box-shadow: var(--shadow);
  overflow: hidden;
}
.orbit-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background-image: linear-gradient(rgba(148,163,184,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(148,163,184,.08) 1px, transparent 1px);
  background-size: 42px 42px;
  transform: rotate(8deg);
}
.core-node, .node {
  position: absolute;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: rgba(15, 23, 42, 0.86);
  box-shadow: 0 0 38px rgba(59, 130, 246, .23);
  font-weight: 800;
}
.core-node { width: 138px; height: 138px; left: 50%; top: 50%; transform: translate(-50%, -50%); background: linear-gradient(135deg, rgba(37,99,235,.95), rgba(20,184,166,.9)); }
.orbit { position: absolute; border: 1px dashed rgba(148, 163, 184, 0.28); border-radius: 50%; left: 50%; top: 50%; transform: translate(-50%, -50%); animation: spin 22s linear infinite; }
.orbit-one { width: 320px; height: 320px; }
.orbit-two { width: 430px; height: 430px; animation-duration: 32s; animation-direction: reverse; }
.node { width: 92px; height: 92px; font-size: .92rem; }
.node-1 { left: 12%; top: 16%; }
.node-2 { right: 13%; top: 17%; }
.node-3 { right: 7%; top: 48%; }
.node-4 { right: 18%; bottom: 13%; }
.node-5 { left: 17%; bottom: 14%; }
.node-6 { left: 7%; top: 48%; }

@keyframes spin { to { transform: translate(-50%, -50%) rotate(360deg); } }

.section-title { text-align: center; max-width: 780px; margin: 0 auto 54px; }
.section-title.align-left { text-align: left; margin: 0; }
h2 { font-size: clamp(2rem, 4vw, 3.45rem); line-height: 1.05; letter-spacing: -0.055em; margin: 12px 0 16px; }
.section-title p:not(.eyebrow), .model-card p, .service-card p, .cta p, .footer p { color: var(--muted); line-height: 1.75; }

.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.service-card, .model-card, .cta-card {
  border: 1px solid var(--card-border);
  background: var(--card);
  border-radius: 28px;
  padding: 30px;
  box-shadow: 0 22px 70px rgba(0,0,0,.19);
  transition: transform .28s, border-color .28s, background .28s;
}
.service-card:hover, .model-card:hover { transform: translateY(-8px); border-color: rgba(20,184,166,.46); background: rgba(15, 32, 60, .94); }
.icon { font-size: 2.1rem; margin-bottom: 18px; }
h3 { margin: 0 0 12px; font-size: 1.25rem; }

.metrics { padding: 48px 0; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; border: 1px solid var(--card-border); border-radius: 30px; padding: 26px; background: rgba(255,255,255,.04); }
.metrics-grid div { text-align: center; padding: 18px; }
.metrics-grid strong { display: block; font-size: clamp(2rem, 4vw, 3.2rem); letter-spacing: -0.06em; }
.metrics-grid span { color: var(--muted); }

.model-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 50px; align-items: start; }
.model-cards { display: grid; gap: 18px; }
.model-card span { color: var(--teal); font-weight: 900; }

.process { background: rgba(255,255,255,.025); }
.timeline { display: grid; grid-template-columns: repeat(6, 1fr); gap: 14px; }
.timeline div { min-height: 118px; padding: 18px; border: 1px solid var(--card-border); border-radius: 22px; background: rgba(15,32,60,.64); font-weight: 800; }
.timeline span { display: inline-grid; place-items: center; width: 32px; height: 32px; margin-right: 8px; border-radius: 50%; background: linear-gradient(135deg, var(--blue), var(--teal)); }

.tech-marquee { overflow: hidden; border: 1px solid var(--card-border); border-radius: 26px; background: rgba(255,255,255,.04); }
.tech-track { display: flex; gap: 16px; width: max-content; padding: 22px; animation: marquee 34s linear infinite; }
.tech-track span { padding: 12px 18px; border-radius: 999px; background: rgba(15,32,60,.86); border: 1px solid rgba(148,163,184,.17); color: var(--muted); font-weight: 800; }
@keyframes marquee { to { transform: translateX(-50%); } }

.cta-card { text-align: center; max-width: 920px; margin: 0 auto; background: radial-gradient(circle at top, rgba(37,99,235,.2), transparent 44%), rgba(15,32,60,.8); }
.contact-actions { justify-content: center; }
.cta small { display: block; color: var(--muted); margin-top: 24px; }

.footer { border-top: 1px solid rgba(148,163,184,.14); padding: 54px 0 26px; background: rgba(2,6,23,.6); }
.footer-grid { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 36px; }
.footer a { display: block; color: var(--muted); margin: 10px 0; }
.footer .brand { color: var(--text); margin-bottom: 16px; }
.footer h4 { margin: 0 0 12px; }
.copyright { text-align: center; color: var(--muted); margin-top: 36px; font-size: .9rem; }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity .75s ease, transform .75s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 920px) {
  .nav-links { position: absolute; top: 76px; left: 20px; right: 20px; display: none; flex-direction: column; align-items: flex-start; padding: 24px; background: rgba(6,23,47,.96); border: 1px solid var(--card-border); border-radius: 22px; }
  .nav-links.open { display: flex; }
  .menu-toggle { display: block; }
  .hero { min-height: auto; }
  .hero-grid, .model-grid { grid-template-columns: 1fr; gap: 48px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .timeline { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .container, .navbar { width: min(100% - 28px, 1120px); }
  .section-padding { padding: 70px 0; }
  .cards-grid, .metrics-grid, .timeline { grid-template-columns: 1fr; }
  .orbit-card { height: 410px; border-radius: 28px; }
  .node { width: 74px; height: 74px; font-size: .78rem; }
  .core-node { width: 112px; height: 112px; }
  .orbit-one { width: 250px; height: 250px; }
  .orbit-two { width: 330px; height: 330px; }
  .hero-actions, .contact-actions { flex-direction: column; }
  .btn { text-align: center; }
}