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

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

.of {
  box-sizing: border-box;
  width: min(248px, 86vw);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  text-align: center;
  color: #17141a;
}

.of__icon {
  display: block;
  font-size: clamp(38px, 12vw, 52px);
  line-height: 0;
  color: rgba(23, 20, 26, 0.42);
}

.of__title {
  margin: 0;
  font-size: clamp(12px, 4vw, 14px);
  line-height: 1.3;
  font-weight: 800;
}

.of__sub {
  margin: 0;
  min-height: 14px;
  font-size: 11px;
  line-height: 14px;
  font-weight: 500;
  color: rgba(23, 20, 26, 0.72);
}

.of__btn {
  height: 30px;
  margin: 0;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  background: #0a4fe8;
  color: #fff7e6;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  cursor: pointer;
}

.of__btn:disabled {
  opacity: 0.64;
  cursor: default;
}

.of__btn:focus-visible {
  outline: 2px solid #17141a;
  outline-offset: 2px;
}

.of__arrow {
  display: block;
  font-size: 14px;
  line-height: 0;
}

.of__btn-t {
  line-height: 1;
}

.of.is-demo .of__arrow,
.of.is-trying .of__arrow {
  animation: of-turn 2s linear infinite;
}

@keyframes of-turn {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}
.of.is-demo .of__icon {
  animation: of-dim 2s ease-in-out infinite;
}

@keyframes of-dim {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.46;
    transform: scale(0.94);
  }
}
@media (prefers-reduced-motion: reduce) {
  .of.is-demo .of__arrow,
  .of.is-trying .of__arrow,
  .of.is-demo .of__icon {
    animation: none !important;
  }
}