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);
}

.badge {
  border: 0;
  border-radius: 999px;
  padding: 16px 36px;
  background: #fff7e6;
  color: #17141a;
  font-weight: 700;
  font-size: clamp(15px, 4vw, 18px);
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.a-shake.is-shaking {
  animation: shake 500ms cubic-bezier(0.36, 0.07, 0.19, 0.97) 1;
}

.a-shake.is-demo {
  animation: shake-loop 2s cubic-bezier(0.36, 0.07, 0.19, 0.97) infinite;
}

@keyframes shake {
  10%, 90% {
    transform: translateX(-4px);
  }
  20%, 80% {
    transform: translateX(8px);
  }
  30%, 70% {
    transform: translateX(-8px);
  }
  40%, 60% {
    transform: translateX(5.6px);
  }
  50% {
    transform: translateX(-5.6px);
  }
}
@keyframes shake-loop {
  0%, 60% {
    transform: translateX(0);
  }
  62%, 78% {
    transform: translateX(-4px);
  }
  64%, 76% {
    transform: translateX(8px);
  }
  66%, 74% {
    transform: translateX(-8px);
  }
  68%, 72% {
    transform: translateX(5.6px);
  }
  70% {
    transform: translateX(-5.6px);
  }
  80%, 100% {
    transform: translateX(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .a-shake.is-shaking, .a-shake.is-demo {
    animation: none;
  }
  .a-shake.is-shaking {
    background: #ffe0d8;
  }
}