:root { color-scheme: dark; }
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: radial-gradient(1000px 500px at 50% -10%, #3a1030 0%, #14101c 60%);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color: #f3eefa;
}
.card {
  width: min(92vw, 460px); background: #1d1727; border: 1px solid #3a2b4d;
  border-radius: 16px; padding: 28px; box-shadow: 0 10px 40px rgba(0, 0, 0, .4);
}
.brand { font-size: 13px; letter-spacing: .18em; text-transform: uppercase; color: #ff8fb8; margin-bottom: 6px; }
h1 { margin: 0 0 8px; font-size: 24px; }
p, li { color: #c9bfdb; line-height: 1.55; }
a { color: #ff8fb8; }
.steps { padding-left: 20px; margin: 14px 0 20px; }
.key {
  font-family: ui-monospace, Consolas, monospace; font-size: 18px; background: #120e19;
  border: 1px dashed #6b4a8a; border-radius: 10px; padding: 14px; word-break: break-all;
  text-align: center; margin: 16px 0; user-select: all;
}
.btn {
  display: block; width: 100%; padding: 13px 18px; border: 0; border-radius: 10px;
  background: #ff6fa5; color: #2a0a1a; font-weight: 700; font-size: 16px;
  cursor: pointer; text-align: center; text-decoration: none;
}
.btn:active { transform: scale(.98); }
.muted { font-size: 13px; color: #9a8fb0; }
.spin {
  width: 28px; height: 28px; border: 3px solid #3a2b4d; border-top-color: #ff6fa5;
  border-radius: 50%; animation: s 1s linear infinite; margin: 14px 0;
}
@keyframes s { to { transform: rotate(360deg); } }