:root {
  color-scheme: dark;
  --ink: #f4f7f2;
  --muted: #9ba6a0;
  --accent: #9effc5;
  --surface: #07090d;
}

* { box-sizing: border-box; }

html { min-height: 100%; }

body {
  min-height: 100vh;
  margin: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 70% 20%, rgba(66, 255, 159, 0.08), transparent 30rem),
    radial-gradient(circle at 15% 80%, rgba(64, 127, 255, 0.08), transparent 28rem),
    var(--surface);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.23;
  background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, black, transparent 78%);
}

main {
  position: relative;
  width: min(92vw, 920px);
  padding: clamp(2rem, 7vw, 5rem);
}

.signal {
  width: 3.4rem;
  height: 3.4rem;
  margin-bottom: 3rem;
  border: 1px solid rgba(158, 255, 197, 0.45);
  border-radius: 50%;
  box-shadow: 0 0 0 10px rgba(158,255,197,.025), 0 0 80px rgba(158,255,197,.15);
  position: relative;
}

.signal::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  background: var(--accent);
  transform: translate(-50%, -50%);
  box-shadow: 0 0 1rem var(--accent);
}

.eyebrow {
  margin: 0 0 1.25rem;
  color: var(--accent);
  font-size: .78rem;
  font-weight: 650;
  letter-spacing: .22em;
  text-transform: uppercase;
}

h1 {
  max-width: 15ch;
  margin: 0;
  font-size: clamp(2.8rem, 8vw, 6.6rem);
  font-weight: 530;
  letter-spacing: -.055em;
  line-height: .96;
  text-wrap: balance;
}

.lede {
  margin: 2rem 0 3.5rem;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.25rem);
}

.status {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin: 0;
  color: #cad2ce;
  font-size: .8rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.status span {
  width: .45rem;
  height: .45rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 .7rem rgba(158,255,197,.8);
}

@media (prefers-reduced-motion: no-preference) {
  .status span { animation: breathe 2.8s ease-in-out infinite; }
  @keyframes breathe { 50% { opacity: .35; transform: scale(.75); } }
}

@media (max-width: 520px) {
  main { padding: 1.5rem; }
  .signal { margin-bottom: 2.2rem; }
  .lede { margin-bottom: 2.5rem; }
}