* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; font-family: Inter, system-ui, sans-serif; }
body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: #0b1020;
  color: #f8fafc;
}
.shell { width: min(92vw, 720px); }
.card {
  padding: 40px;
  border: 1px solid #27324a;
  border-radius: 24px;
  background: #121a2d;
  box-shadow: 0 24px 80px rgba(0,0,0,.35);
}
.badge {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: #1f2a44;
  font-size: 12px;
  letter-spacing: .08em;
}
h1 { margin: 18px 0 12px; font-size: clamp(2rem, 5vw, 3.3rem); }
p { color: #cbd5e1; line-height: 1.6; }
button {
  margin-top: 18px;
  padding: 12px 18px;
  border: 0;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 700;
}
small { display: block; margin-top: 14px; color: #94a3b8; }