* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: #0b0f17;
  color: #eaf0ff;
}
.wrap {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}
.card {
  width: 100%;
  max-width: 520px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 18px;
  padding: 26px;
  backdrop-filter: blur(10px);
}
.badge {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.18);
  padding: 8px 10px;
  border-radius: 999px;
  margin: 0 0 12px;
  font-size: 13px;
}
h1 { margin: 0 0 10px; font-size: 28px; line-height: 1.1; }
.sub { margin: 0 0 18px; opacity: 0.9; }
.btn {
  display: block;
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  background: #25D366;
  color: #0b0f17;
  padding: 14px 16px;
  border-radius: 14px;
}
.btn:hover { filter: brightness(0.95); }
.hint { margin: 14px 0 0; font-size: 13px; opacity: 0.75; }