:root {
  --bg: #060b1a;
  --bg-alt: #0a1128;
  --surface: #0f1830;
  --surface-2: #121e3d;
  --border: rgba(0, 212, 255, 0.14);
  --text: #e8edf9;
  --text-dim: #93a1c4;
  --blue: #00d4ff;
  --blue-2: #2b6bff;
  --grad: linear-gradient(135deg, #00d4ff 0%, #2b6bff 100%);
  --radius: 16px;
  --container: 1160px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: Inter, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 12px;
}
.eyebrow.center { display: block; text-align: center; }

.section-title {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.section-title.center { text-align: center; margin-bottom: 48px; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad);
  color: #04101f;
  box-shadow: 0 0 0 rgba(0, 212, 255, 0), 0 8px 24px -8px rgba(0, 168, 255, 0.6);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 24px rgba(0, 212, 255, 0.55), 0 12px 28px -8px rgba(0, 168, 255, 0.7);
}
.btn-ghost {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-2px);
}
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 11, 26, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 76px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
  margin-right: auto;
}
.logo-mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--grad);
  box-shadow: 0 0 16px rgba(0, 212, 255, 0.55);
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-size: 0.92rem;
  color: var(--text-dim);
  transition: color 0.2s ease;
}
.nav-links a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* Hero */
.hero {
  position: relative;
  padding: 140px 0 100px;
  text-align: center;
  overflow: hidden;
}
.hero-glow {
  position: absolute;
  top: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 560px;
  background: radial-gradient(closest-side, rgba(0, 212, 255, 0.28), rgba(43, 107, 255, 0.12) 55%, transparent 75%);
  filter: blur(10px);
  pointer-events: none;
}
.hero-content { position: relative; }
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
}
.hero-sub {
  max-width: 640px;
  margin: 0 auto 36px;
  color: var(--text-dim);
  font-size: 1.08rem;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Stats */
.stats { padding: 40px 0 80px; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 36px 0;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Services */
.services { padding: 60px 0 100px; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.card {
  background: linear-gradient(180deg, var(--surface), var(--surface-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.4);
  box-shadow: 0 16px 36px -18px rgba(0, 212, 255, 0.35);
}
.card-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--blue);
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid var(--border);
  margin-bottom: 18px;
}
.card-icon svg { width: 22px; height: 22px; }
.card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.card p { color: var(--text-dim); font-size: 0.92rem; }

/* About */
.about { padding: 60px 0 110px; }
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}
.about-copy p { color: var(--text-dim); margin-bottom: 14px; }
.about-visual { display: flex; justify-content: center; }
.orbit-card {
  position: relative;
  width: 260px;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.orbit-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid rgba(0, 212, 255, 0.25);
  animation: spin 14s linear infinite;
}
.orbit-ring::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 12px var(--blue);
}
.orbit-ring-2 {
  inset: 34px;
  border-color: rgba(43, 107, 255, 0.3);
  animation-duration: 9s;
  animation-direction: reverse;
}
.orbit-core {
  width: 84px;
  height: 84px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 60px rgba(0, 212, 255, 0.5);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Contact */
.contact { padding: 40px 0 120px; text-align: center; }
.contact-sub {
  max-width: 480px;
  margin: 0 auto 32px;
  color: var(--text-dim);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}
.footer-inner {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: center;
}

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 860px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { order: -1; }
}

@media (max-width: 640px) {
  .nav-links, .btn-sm { display: none; }
  .nav-toggle { display: flex; }
  .services-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .hero { padding: 110px 0 70px; }

  .nav-links.open {
    display: flex;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 20px 24px;
    gap: 18px;
  }
}