.closed-beta-banner {
  position: sticky;
  top: 0;
  z-index: 10000;
  padding: 0.55rem 1rem;
  color: #082f49;
  background: #bae6fd;
  border-bottom: 1px solid #38bdf8;
  text-align: center;
  font: 700 0.85rem/1.4 system-ui, sans-serif;
}

.closed-beta-banner strong { letter-spacing: 0.04em; }

.closed-beta-login {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1rem;
  background: #ecfeff;
  border-bottom: 1px solid #a5f3fc;
  font: 600 0.85rem/1.4 system-ui, sans-serif;
}

.closed-beta-login input { min-width: min(24rem, 48vw); }
.closed-beta-login button { white-space: nowrap; }