:root {
  --bg: #050816;
  --bg-2: #0b1020;
  --card: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --cyan: #22d3ee;
  --blue: #3b82f6;
  --green: #10b981;
  --violet: #8b5cf6;
  --yellow: #fbbf24;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 20% 10%, rgba(34, 211, 238, 0.22), transparent 30rem),
    radial-gradient(circle at 90% 15%, rgba(139, 92, 246, 0.2), transparent 28rem),
    linear-gradient(135deg, var(--bg), var(--bg-2) 58%, #06111b);
  letter-spacing: 0;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), transparent);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand,
.top-nav,
.hero-actions,
.site-footer {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.7rem;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.25), rgba(139, 92, 246, 0.22));
  color: var(--cyan);
}

.top-nav {
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.94rem;
}

.top-nav a {
  padding: 0.7rem 0.9rem;
  border-radius: 999px;
}

.top-nav a:hover,
.nav-cta {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.section-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.92fr);
  align-items: center;
  min-height: calc(100vh - 82px);
  gap: 4rem;
  padding: 5rem 0 6rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 920px;
  margin-bottom: 1.25rem;
  font-size: clamp(2.35rem, 4.4vw, 3.7rem);
  line-height: 1;
}

h2 {
  margin-bottom: 1rem;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.03;
}

h3 {
  margin-bottom: 0.7rem;
  font-size: 1.15rem;
}

p {
  color: var(--muted);
  line-height: 1.65;
}

.hero-copy {
  max-width: 760px;
  font-size: clamp(1.05rem, 2vw, 1.32rem);
}

.hero-actions {
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0.85rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  border-color: rgba(34, 211, 238, 0.45);
  background: linear-gradient(135deg, var(--cyan), var(--blue));
  color: #04111d;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  border: 1px solid var(--border);
  border-radius: 28px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.025)),
    radial-gradient(circle at 30% 30%, rgba(34, 211, 238, 0.22), transparent 16rem),
    radial-gradient(circle at 70% 70%, rgba(16, 185, 129, 0.16), transparent 16rem);
  box-shadow: var(--shadow);
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 999px;
}

.hero-visual::before {
  width: 360px;
  height: 360px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.hero-visual::after {
  width: 230px;
  height: 230px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(24deg);
}

.signal-card {
  position: absolute;
  z-index: 2;
  display: grid;
  gap: 0.45rem;
  width: min(320px, calc(100% - 64px));
  padding: 1.35rem;
  border: 1px solid var(--border);
  border-radius: 22px;
  background: rgba(5, 8, 22, 0.72);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(18px);
}

.main-signal {
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.signal-label {
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.signal-card strong {
  font-size: 2rem;
}

.signal-card small {
  color: var(--muted);
}

.orbit {
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 28px var(--cyan);
}

.orbit-one {
  left: 18%;
  top: 22%;
}

.orbit-two {
  right: 18%;
  bottom: 22%;
  background: var(--green);
  box-shadow: 0 0 28px var(--green);
}

.node-grid {
  position: absolute;
  inset: 34px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  opacity: 0.65;
}

.node-grid span {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.035);
}

.section-block {
  padding: 5rem 0;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 2rem;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.glass-card,
.steps article,
.cta-panel {
  border: 1px solid var(--border);
  background: var(--card);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(16px);
}

.glass-card {
  min-height: 240px;
  padding: 1.25rem;
  border-radius: 18px;
}

.card-icon {
  display: inline-grid;
  width: 44px;
  height: 44px;
  margin-bottom: 1.2rem;
  place-items: center;
  border-radius: 14px;
  background: rgba(34, 211, 238, 0.12);
  color: var(--cyan);
  font-weight: 900;
}

.split-section {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 2rem;
  align-items: start;
}

.steps {
  display: grid;
  gap: 1rem;
}

.steps article {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0 1rem;
  padding: 1.2rem;
  border-radius: 18px;
}

.steps span {
  grid-row: span 2;
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.25), rgba(59, 130, 246, 0.18));
  color: var(--green);
  font-weight: 900;
}

.steps p {
  margin-bottom: 0;
}

.cta-panel {
  margin-top: 3rem;
  margin-bottom: 5rem;
  padding: clamp(2rem, 5vw, 4rem);
  border-radius: 28px;
  background:
    radial-gradient(circle at 12% 20%, rgba(34, 211, 238, 0.2), transparent 22rem),
    radial-gradient(circle at 80% 70%, rgba(139, 92, 246, 0.2), transparent 24rem),
    rgba(255, 255, 255, 0.06);
}

.site-footer {
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  color: var(--muted);
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .top-nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.3rem;
  }

  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    gap: 2rem;
    padding-top: 3rem;
  }

  .hero-visual {
    min-height: 380px;
  }

  .service-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .service-grid {
    grid-template-columns: 1fr;
  }

  .site-footer,
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }
}