:root {
  --bg: #06111f;
  --bg-2: #0a1728;
  --panel: #0d1d31;
  --line: rgba(120, 220, 255, .16);
  --text: #f5fbff;
  --muted: #9fb4c7;
  --cyan: #00e5ff;
  --green: #19f59f;
  --blue: #3278ff;
  --danger: #ff4d6d;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 80% 0%, rgba(0, 229, 255, .16), transparent 34%),
    radial-gradient(circle at 15% 18%, rgba(25, 245, 159, .10), transparent 28%),
    linear-gradient(180deg, var(--bg), #030912 78%);
  font-family: Inter, Arial, Helvetica, sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 78%);
}

a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
  padding: 14px clamp(18px, 5vw, 72px);
  border-bottom: 1px solid var(--line);
  background: rgba(6, 17, 31, .82);
  backdrop-filter: blur(18px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(0,229,255,.5);
  border-radius: 14px;
  color: var(--cyan);
  background: linear-gradient(145deg, rgba(0,229,255,.12), rgba(25,245,159,.08));
  box-shadow: 0 0 28px rgba(0,229,255,.18);
  font-weight: 900;
}

.brand strong,
.brand small { display: block; }
.brand strong { font-size: 17px; }
.brand small { color: var(--muted); font-size: 12px; }
.main-nav { display: flex; align-items: center; gap: 24px; color: var(--muted); font-size: 14px; font-weight: 700; }
.main-nav a { text-decoration: none; }
.main-nav a:hover { color: var(--cyan); }
.nav-toggle { display: none; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(360px, .82fr);
  gap: 44px;
  align-items: center;
  min-height: calc(100vh - 78px);
  padding: clamp(56px, 8vw, 104px) clamp(18px, 5vw, 72px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--green);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 18px var(--green);
}

h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 900px;
  margin: 18px 0 22px;
  font-size: clamp(44px, 7vw, 84px);
  line-height: .96;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(30px, 4.3vw, 56px);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.hero p,
.split-section p,
.system-section p,
.cta-section p {
  max-width: 720px;
  color: var(--muted);
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.65;
}

.hero-actions,
.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
  font-weight: 850;
  text-decoration: none;
}

.button.primary {
  border-color: rgba(0,229,255,.48);
  color: #001018;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  box-shadow: 0 18px 50px rgba(0,229,255,.18);
}

.button.ghost {
  color: var(--text);
  background: rgba(255,255,255,.04);
}

.hero-metrics article {
  min-width: 136px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(255,255,255,.035);
}

.hero-metrics strong,
.hero-metrics span { display: block; }
.hero-metrics strong { color: var(--cyan); font-size: 26px; }
.hero-metrics span { color: var(--muted); font-size: 12px; font-weight: 700; }

.hero-panel {
  position: relative;
  min-height: 500px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.02)),
    rgba(13,29,49,.86);
  box-shadow: 0 32px 100px rgba(0,0,0,.32);
  overflow: hidden;
}

.hero-panel::before {
  content: "";
  position: absolute;
  inset: 26px;
  border: 1px solid rgba(0,229,255,.12);
  border-radius: 22px;
}

.panel-bar { display: flex; gap: 8px; margin-bottom: 26px; }
.panel-bar span { width: 12px; height: 12px; border-radius: 50%; background: var(--cyan); opacity: .7; }
.terminal-card {
  position: relative;
  z-index: 1;
  padding: 24px;
  border: 1px solid rgba(0,229,255,.18);
  border-radius: 22px;
  background: rgba(3, 9, 18, .72);
  font-family: Consolas, "Courier New", monospace;
}
.terminal-card p { color: #d9f7ff; line-height: 1.7; }
.terminal-card b { color: var(--green); }
.terminal-card .success { color: var(--cyan); }
.signal-grid { position: absolute; inset: auto 22px 22px 22px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.signal-grid span { height: 86px; border-radius: 18px; background: linear-gradient(180deg, rgba(0,229,255,.18), rgba(25,245,159,.05)); }

.section,
.split-section,
.system-section,
.cta-section {
  padding: clamp(64px, 8vw, 110px) clamp(18px, 5vw, 72px);
}

.section-head {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(240px, .45fr);
  gap: 28px;
  align-items: end;
  margin-bottom: 34px;
}

.service-grid,
.plan-grid,
.system-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-grid article,
.plan-grid article,
.system-grid article,
.stack-list article {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255,255,255,.045);
}

.service-grid article { min-height: 250px; padding: 22px; }
.service-grid span { color: var(--cyan); font-size: 13px; font-weight: 900; }
.service-grid h3 { margin: 46px 0 12px; font-size: 23px; }
.service-grid p,
.stack-list span,
.system-grid span,
.plan-grid p { color: var(--muted); line-height: 1.55; }

.split-section,
.system-section,
.cta-section {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(360px, .7fr);
  gap: 42px;
  align-items: center;
}

.stack-list { display: grid; gap: 14px; }
.stack-list article { padding: 20px; }
.stack-list strong,
.stack-list span { display: block; }
.stack-list strong { margin-bottom: 8px; }

.plans-band {
  border-block: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(0,229,255,.07), rgba(25,245,159,.04));
}
.plan-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.plan-grid article { padding: 26px; }
.plan-grid .featured { border-color: rgba(25,245,159,.42); box-shadow: 0 0 60px rgba(25,245,159,.09); }
.plan-grid strong { color: var(--cyan); }

.system-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.system-grid article { padding: 22px; }
.system-grid b,
.system-grid span { display: block; }
.system-grid b { margin-bottom: 8px; font-size: 20px; }

.cta-section {
  margin: clamp(18px, 5vw, 72px);
  border: 1px solid rgba(0,229,255,.22);
  border-radius: 30px;
  background: linear-gradient(135deg, rgba(0,229,255,.14), rgba(25,245,159,.08));
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  padding: 34px clamp(18px, 5vw, 72px);
  border-top: 1px solid var(--line);
  color: var(--muted);
}
.site-footer strong,
.site-footer span,
.site-footer a { display: block; margin-bottom: 7px; }
.site-footer strong { color: var(--text); }
.site-footer a { text-decoration: none; color: var(--cyan); }

@media (max-width: 1080px) {
  .hero,
  .split-section,
  .system-section,
  .cta-section,
  .section-head {
    grid-template-columns: 1fr;
  }
  .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
  .main-nav { display: none; width: 100%; }
  .main-nav.open { display: grid; }
  .nav-toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 12px; color: var(--text); background: rgba(255,255,255,.04); padding: 10px 12px; }
  .site-header { flex-wrap: wrap; }
  .hero { min-height: auto; }
  .hero-panel { min-height: 390px; }
  .service-grid,
  .plan-grid,
  .system-grid,
  .site-footer { grid-template-columns: 1fr; }
  .cta-section { margin: 18px; }
}