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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #eaf1ff;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.cardgrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  width: 200px;
}

.cardgrid__card {
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 8px;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 8px 16px rgba(23, 20, 26, 0.08);
  animation: cardLift 2s ease-out infinite;
}

.cardgrid__card--a {
  animation-delay: 0s;
}

.cardgrid__card--b {
  animation-delay: -1.5s;
}

.cardgrid__card--c {
  animation-delay: -1s;
}

.cardgrid__card--d {
  animation-delay: -0.5s;
}

.cardgrid__icon {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(47, 109, 246, 0.14);
  color: #2f6df6;
  font-size: 18px;
  animation: iconScale 2s ease-out infinite;
}

.cardgrid__card--a .cardgrid__icon {
  animation-delay: 0s;
}

.cardgrid__card--b .cardgrid__icon {
  animation-delay: -1.5s;
}

.cardgrid__card--c .cardgrid__icon {
  animation-delay: -1s;
}

.cardgrid__card--d .cardgrid__icon {
  animation-delay: -0.5s;
}

.cardgrid__label {
  margin: 0;
  color: #17141a;
  font-weight: 600;
  font-size: 12px;
  line-height: 1.2;
  font-family: inherit;
}

@keyframes cardLift {
  0%, 60%, 100% {
    transform: translateY(0);
    box-shadow: 0 8px 16px rgba(23, 20, 26, 0.08);
  }
  20% {
    transform: translateY(-5px);
    box-shadow: 0 14px 22px rgba(23, 20, 26, 0.12);
  }
}
@keyframes iconScale {
  0%, 60%, 100% {
    transform: scale(1);
    background: rgba(47, 109, 246, 0.14);
  }
  20% {
    transform: scale(1.12);
    background: rgba(47, 109, 246, 0.22);
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .cardgrid {
    width: 176px;
    gap: 4px;
  }
  .cardgrid__card {
    padding: 4px;
  }
  .cardgrid__icon {
    width: 28px;
    height: 28px;
    font-size: 14px;
  }
  .cardgrid__label {
    font-size: 10px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .cardgrid__card, .cardgrid__icon {
    animation: none !important;
    transform: none;
  }
}