:root {
  --bg-main: hsl(230, 45%, 5%);
  --bg-surface: hsl(230, 40%, 8%);
  --bg-card: hsl(230, 38%, 12%);
  --bg-card-hover: hsl(230, 38%, 16%);
  --border: hsl(228, 25%, 19%);
  --text-main: hsl(210, 40%, 98%);
  --text-muted: hsl(215, 20%, 65%);
  --text-dim: hsl(215, 16%, 45%);
  --accent-purple: hsl(265, 89%, 66%);
  --accent-cyan: hsl(190, 95%, 48%);
  --accent-emerald: hsl(152, 69%, 45%);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
header {
  border-bottom: 1px solid var(--border);
  background: hsla(230, 45%, 5%, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 50;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.15rem;
}
.brand-badge {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
}
.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}
.nav-links a:hover, .nav-links a.active { color: var(--text-main); }
.btn-primary {
  background: var(--accent-cyan);
  color: hsl(190, 95%, 8%);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
}
.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-main);
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.875rem;
  text-decoration: none;
}
.container { max-width: 1200px; margin: 0 auto; padding: 2.5rem 1.5rem; flex: 1; }
.hero { padding: 3rem 0; text-align: center; max-width: 860px; margin: 0 auto; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: hsla(190, 95%, 48%, 0.1);
  color: var(--accent-cyan);
  border: 1px solid hsla(190, 95%, 48%, 0.25);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
}
.pulse-dot {
  width: 8px; height: 8px; background: var(--accent-emerald); border-radius: 50%; box-shadow: 0 0 10px var(--accent-emerald);
}
.hero h1 { font-size: 2.75rem; font-weight: 800; line-height: 1.15; margin-bottom: 1.25rem; }
.hero p { font-size: 1.1rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 2rem; }
.telemetry-bar {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.75rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3.5rem;
}
.telemetry-item { display: flex; flex-direction: column; gap: 0.35rem; }
.telemetry-label { font-size: 0.75rem; font-weight: 600; color: var(--text-dim); text-transform: uppercase; }
.telemetry-value { font-family: var(--font-mono); font-size: 1.15rem; font-weight: 700; color: var(--text-main); }
.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 1.5rem; margin-bottom: 3.5rem; }
.card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: 10px; padding: 1.5rem; display: flex; flex-direction: column; justify-content: space-between; }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; }
.card-title { font-size: 1.15rem; font-weight: 700; }
.card-metrics {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem;
  background: var(--bg-card); border-radius: 6px; padding: 0.85rem; margin: 1rem 0; font-family: var(--font-mono); font-size: 0.8rem;
}
.card-metric-val { font-weight: 700; color: var(--text-main); }
.card-metric-lbl { color: var(--text-dim); font-size: 0.7rem; }
footer { border-top: 1px solid var(--border); background: var(--bg-surface); padding: 2rem 1.5rem; font-size: 0.85rem; color: var(--text-muted); }