* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  background: radial-gradient(circle at 20% -10%, #08243a, #01030a 55%);
  color: #e7ebff;
}
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2.5rem;
  gap: 1rem;
}
.hero h1 {
  font-size: clamp(2.4rem, 3.6vw, 3.4rem);
  margin: 0;
}
.hero p {
  max-width: 32rem;
  margin: 0;
  color: rgba(231, 235, 255, 0.85);
}
.muted {
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}
.btn {
  border-radius: 999px;
  padding: 0.8rem 1.8rem;
  text-decoration: none;
  font-weight: 600;
}
.btn.primary {
  background: linear-gradient(135deg, #66d4ff, #94ff94);
  color: #021214;
}