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);
}

.gc {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.gc__bob {
  display: flex;
  justify-content: center;
  width: 100%;
}

.gc__card {
  position: relative;
  width: min(100%, 288px);
  aspect-ratio: 288/168;
  transform-style: preserve-3d;
  cursor: pointer;
  transition: transform 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.gc__card:focus-visible {
  outline: 3px solid #ffd23f;
  outline-offset: 4px;
  border-radius: 16px;
}

.gc.is-flipped .gc__card {
  transform: rotateY(180deg);
}

.gc__face {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  border-radius: 16px;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  padding: 16px;
}

.gc__face--front {
  background: #b9a0ff;
  color: #17141a;
}

.gc__face--back {
  background: #fff7e6;
  color: #17141a;
  transform: rotateY(180deg);
  gap: 8px;
}

.gc__brand {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  font-weight: 800;
  font-size: clamp(10px, 2.8vw, 12px);
  letter-spacing: 0.2em;
  color: rgba(23, 20, 26, 0.78);
}

.gc__ico {
  width: 18px;
  height: 18px;
  color: #17141a;
}

.gc__amount {
  margin: 0;
  font-weight: 800;
  font-size: clamp(28px, 8vw, 38px);
  line-height: 1;
  color: #17141a;
}

.gc__hint {
  margin: 0;
  font-weight: 700;
  font-size: clamp(10px, 2.8vw, 11px);
  color: rgba(23, 20, 26, 0.78);
}

.gc__balLabel {
  margin: 0;
  font-weight: 700;
  font-size: clamp(10px, 2.8vw, 11px);
  color: rgba(23, 20, 26, 0.72);
}

.gc__bal {
  margin: 0;
  font-weight: 800;
  font-size: clamp(22px, 6.4vw, 28px);
  line-height: 1;
  color: #2f6df6;
}

.gc__pinRow {
  display: flex;
  align-items: center;
  gap: 8px;
}

.gc__pinDots {
  font-weight: 800;
  font-size: clamp(11px, 3.2vw, 13px);
  letter-spacing: 0.1em;
  color: #17141a;
}

.gc__pinBtn {
  border: 0;
  cursor: pointer;
  background: #17141a;
  color: #fff7e6;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 700;
  font-size: clamp(10px, 2.8vw, 11px);
  padding: 4px 12px;
  line-height: 1.3;
}

.gc__pinBtn:focus-visible {
  outline: 3px solid #b9a0ff;
  outline-offset: 2px;
}

.gc__live {
  margin: 0;
  min-height: 1.2em;
  font-weight: 700;
  font-size: clamp(10px, 2.8vw, 11px);
  color: #fff7e6;
}

.gc.is-demo .gc__bob {
  animation: gcFloat 2s ease-in-out infinite;
}

@keyframes gcFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}
.gc.is-demo .gc__card {
  animation: gcCut 2s steps(1, end) infinite;
  transition: none;
}

@keyframes gcCut {
  0%, 30% {
    transform: rotateY(0deg);
  }
  30.5%, 85% {
    transform: rotateY(180deg);
  }
  85.5%, 100% {
    transform: rotateY(0deg);
  }
}
.gc.is-demo .gc__pinDots {
  animation: gcPin 2s steps(1, end) infinite;
}

@keyframes gcPin {
  0%, 46% {
    opacity: 1;
  }
  46.5%, 60% {
    opacity: 0.35;
  }
  60.5%, 100% {
    opacity: 1;
  }
}
@media (max-width: 340px) {
  .gc__face {
    padding: 8px;
  }
  .gc__card {
    width: min(100%, 232px);
  }
  .gc {
    gap: 4px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .gc.is-demo .gc__bob,
  .gc.is-demo .gc__card,
  .gc.is-demo .gc__pinDots {
    animation: none !important;
  }
  .gc__card {
    transition: none !important;
  }
  .gc.is-demo .gc__card {
    transform: rotateY(180deg);
  }
}