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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ffd23f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.track {
  position: relative;
  width: clamp(200px, 58vw, 280px);
  height: 16px;
  border-radius: 999px;
  background: rgba(23, 20, 26, 0.14);
  overflow: hidden;
}

.bar {
  position: absolute;
  inset: 0;
  width: 62%;
  border-radius: inherit;
  background-image: repeating-linear-gradient(45deg, #17141a 0 10px, rgba(23, 20, 26, 0.55) 10px 20px);
  background-size: 28px 28px;
}

.bar.is-demo {
  animation: stripe-move 1s linear infinite;
}

@keyframes stripe-move {
  from {
    background-position: 0 0;
  }
  to {
    background-position: 28px 0;
  }
}
.cap {
  margin: 14px 0 0;
  color: rgba(23, 20, 26, 0.75);
  font: 600 clamp(12px, 3.2vw, 14px)/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

@media (prefers-reduced-motion: reduce) {
  .bar.is-demo {
    animation: none;
  }
}