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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #1b1a20;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ic {
  --lift: -20px;
  box-sizing: border-box;
  width: clamp(288px, 94vw, 432px);
}

.ic__sheet {
  padding: 16px;
  border-radius: 16px;
  background: #fbf6ee;
  text-align: center;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
}

.ic__eyebrow {
  margin: 0 0 4px;
  color: #575162;
  font-weight: 700;
  font-size: 10px;
  line-height: 1.2;
  letter-spacing: 0.08em;
  font-family: inherit;
}

.ic__head {
  margin: 0;
  color: #1b1a20;
  font-weight: 800;
  font-size: clamp(14px, 3.2vw, 17px);
  line-height: 1.25;
  font-family: inherit;
}

.ic__head:focus-visible {
  outline: 3px solid #479089;
  outline-offset: 4px;
}

.ic__floor {
  padding: 16px 8px 0;
}

.ic__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
}

.ic__link {
  position: relative;
  display: inline-block;
  padding-bottom: 4px;
  color: #ffffff;
  text-decoration: none;
  font-weight: 700;
  font-size: clamp(12px, 2.8vw, 13px);
  line-height: 1.3;
}

.ic__link:focus-visible {
  outline: 2px solid #b3dad5;
  outline-offset: 3px;
  border-radius: 4px;
}

.ic__rule {
  position: absolute;
  left: 0;
  bottom: 0;
  display: block;
  width: 100%;
  height: 2px;
  background: #b3dad5;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.ic__link:hover .ic__rule,
.ic__link:focus-visible .ic__rule {
  transform: scaleX(1);
}

.ic__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  margin: 12px 0 0;
  padding: 8px 0 0;
  border-top: 1px solid #2c2a33;
}

.ic__copy {
  margin: 0;
  color: #b9b3c4;
  font-weight: 500;
  font-size: 10px;
  line-height: 1.4;
  font-family: inherit;
}

.ic__top {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex: 0 0 auto;
  padding: 4px 8px;
  border: 1px solid #2c2a33;
  border-radius: 999px;
  background: #2c2a33;
  color: #b9b3c4;
  cursor: pointer;
  font-weight: 600;
  font-size: 10px;
  line-height: 1.3;
  font-family: inherit;
}

.ic__top:focus-visible {
  outline: 2px solid #b3dad5;
  outline-offset: 2px;
}

.ic__ic {
  display: flex;
}

.ic.is-demo .ic__sheet {
  animation-name: sheetDrop;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
  animation-fill-mode: backwards;
}

.ic.is-demo .ic__rule {
  animation-name: ruleScan;
  animation-duration: 2s;
  animation-timing-function: ease-out;
  animation-iteration-count: infinite;
  animation-fill-mode: backwards;
}

.ic.is-demo .ic__link:nth-child(2) .ic__rule {
  animation-delay: 180ms;
}

.ic.is-demo .ic__link:nth-child(3) .ic__rule {
  animation-delay: 360ms;
}

.ic.is-demo .ic__link:nth-child(4) .ic__rule {
  animation-delay: 540ms;
}

@keyframes sheetDrop {
  0% {
    transform: translateY(var(--lift));
  }
  22% {
    transform: translateY(0);
  }
  30% {
    transform: translateY(-3px);
  }
  38%, 100% {
    transform: translateY(0);
  }
}
@keyframes ruleScan {
  0% {
    transform: scaleX(0);
  }
  24%, 60% {
    transform: scaleX(1);
  }
  84%, 100% {
    transform: scaleX(0);
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .ic {
    --lift: -14px;
    width: 276px;
  }
  .ic__sheet {
    padding: 8px;
  }
  .ic__head {
    font-size: 13px;
  }
  .ic__floor {
    padding: 8px 0 0;
  }
  .ic__nav {
    gap: 4px 12px;
  }
  .ic__link {
    font-size: 12px;
  }
  .ic__bottom {
    margin: 8px 0 0;
    padding: 4px 0 0;
  }
  .ic__copy {
    font-size: 9px;
  }
  .ic__top {
    font-size: 9px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ic__sheet {
    animation: none !important;
    transform: none !important;
  }
  .ic__rule {
    animation: none !important;
    transition: none !important;
  }
}