body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, #020617 0%, #0f172a 100%);
  color: #e2e8f0;
  font-family: Consolas, 'Courier New', monospace;
}

.shell {
  width: min(720px, calc(100vw - 3rem));
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: 24px;
  padding: 2rem;
  background: rgba(15, 23, 42, 0.86);
  box-shadow: 0 25px 60px rgba(2, 6, 23, 0.45);
}

.eyebrow {
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: #38bdf8;
  font-size: 0.75rem;
}

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 4vw, 3rem);
}

p {
  line-height: 1.7;
  color: #cbd5e1;
}

button {
  margin-top: 1.5rem;
  border: 0;
  border-radius: 999px;
  background: #0ea5e9;
  color: #020617;
  padding: 0.8rem 1.2rem;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

pre {
  margin-top: 1rem;
  white-space: pre-wrap;
  color: #7dd3fc;
}