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);
}

.sk-card {
  position: relative;
  width: min(260px, 84vw);
  height: 140px;
  box-sizing: border-box;
  padding: 20px;
  border-radius: 16px;
  background: #17141a;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  overflow: hidden;
}

.sk-skeleton, .sk-content {
  position: absolute;
  inset: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sk-bar {
  height: 12px;
  border-radius: 4px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.1) 25%, rgba(255, 255, 255, 0.24) 50%, rgba(255, 255, 255, 0.1) 75%);
  background-size: 200% 100%;
  animation: sk-shimmer 1.1s linear infinite;
}

.sk-bar--title {
  width: 60%;
  height: 16px;
}

.sk-bar--line.short {
  width: 40%;
}

@keyframes sk-shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}
.sk-content {
  justify-content: center;
  color: #fff7e6;
  font-family: -apple-system, "Segoe UI", sans-serif;
}

.sk-content__title {
  font-weight: 700;
  font-size: 15px;
  line-height: 1.3;
  font-family: inherit;
}

.sk-content__line {
  font-weight: 400;
  font-size: 12px;
  line-height: 1.5;
  font-family: inherit;
  color: #2f6df6;
}

.sk-content {
  opacity: 0;
}

@keyframes sk-out {
  0%, 30% {
    opacity: 1;
  }
  75%, 100% {
    opacity: 0;
  }
}
@keyframes sk-in {
  0%, 30% {
    opacity: 0;
  }
  75%, 100% {
    opacity: 1;
  }
}
.sk-card.is-demo .sk-skeleton {
  animation: sk-out 2s ease-out infinite;
}

.sk-card.is-demo .sk-content {
  animation: sk-in 2s ease-out infinite;
}

@media (prefers-reduced-motion: reduce) {
  .sk-bar {
    animation: none !important;
  }
  .sk-card.is-demo .sk-skeleton,
  .sk-card.is-demo .sk-content {
    animation: none !important;
  }
  .sk-skeleton {
    opacity: 0;
  }
  .sk-content {
    opacity: 1;
  }
}