html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #17141a;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.rb-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #fff7e6;
  font: 600 12px/1 -apple-system, "Segoe UI", sans-serif;
}

.rb-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: #2f6df6;
}

@keyframes rb-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(47, 109, 246, 0.55);
    transform: scale(1);
  }
  70% {
    box-shadow: 0 0 0 8px rgba(47, 109, 246, 0);
    transform: scale(1.15);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(47, 109, 246, 0);
    transform: scale(1);
  }
}
.rb-badge.is-demo .rb-dot {
  animation: rb-pulse 1.6s ease-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .rb-badge.is-demo .rb-dot {
    animation: none !important;
    box-shadow: none !important;
    transform: none !important;
  }
}