:root {
  color-scheme: dark;
  --bg: #0b0f17;
  --panel: #121826;
  --text: #e8edf5;
  --muted: #94a3b8;
  --accent: #6ee7b7;
  --border: rgba(148, 163, 184, 0.18);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 20% -10%, #1e293b 0%, var(--bg) 55%);
  color: var(--text);
  display: grid;
  place-items: center;
  padding: 2rem;
}
main {
  width: min(640px, 100%);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.25rem 2rem;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
}
.eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 0.75rem;
}
h1 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
  font-weight: 650;
}
.lead {
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0 0 1rem;
}
p {
  margin: 0 0 1.25rem;
  line-height: 1.6;
  color: #cbd5e1;
}
footer {
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}