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);
}

.panel {
  display: grid;
  gap: 14px;
  justify-items: center;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.panel__row {
  display: grid;
  gap: 8px;
  justify-items: center;
}

.marquee {
  width: min(240px, 70vw);
  overflow: hidden;
}

.marquee__track {
  display: flex;
  width: max-content;
}

.marquee__chip {
  margin-right: 14px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  height: 30px;
  padding: 0 12px;
  border-radius: 12px;
  background: rgba(255, 247, 230, 0.1);
  color: #fff7e6;
  font-weight: 700;
  font-size: 12px;
  line-height: 1;
  font-family: inherit;
}

.panel__state {
  position: relative;
  width: 100%;
  min-width: 84px;
  height: 16px;
}

.panel__state-text {
  position: absolute;
  inset: 0;
  width: 100%;
  text-align: center;
  white-space: nowrap;
  font-weight: 700;
  font-size: 12px;
  line-height: 16px;
  font-family: inherit;
  color: rgba(255, 247, 230, 0.7);
}

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

.panel__toggle-track {
  position: relative;
  width: 36px;
  height: 20px;
  border-radius: 999px;
  background: rgba(255, 247, 230, 0.18);
}

.panel__toggle-knob {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #2f6df6;
}

.panel__toggle-label {
  font-weight: 600;
  font-size: 11px;
  line-height: 1;
  font-family: inherit;
  color: rgba(255, 247, 230, 0.68);
}

.panel.is-demo .marquee__track {
  animation: marquee-toggle 2s linear infinite;
}

.panel.is-demo .panel__toggle-knob {
  animation: toggle-knob 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.panel.is-demo .panel__toggle-track {
  animation: toggle-track 2s cubic-bezier(0.2, 0.8, 0.2, 1) infinite;
}

.panel.is-demo .panel__state-text--play {
  animation: state-play 2s steps(1) infinite;
}

.panel.is-demo .panel__state-text--pause {
  animation: state-pause 2s steps(1) infinite;
}

@keyframes marquee-toggle {
  0% {
    transform: translateX(0);
  }
  55% {
    transform: translateX(-30%);
  }
  100% {
    transform: translateX(-30%);
  }
}
@keyframes toggle-knob {
  0%, 50% {
    transform: translateX(0);
  }
  70%, 100% {
    transform: translateX(16px);
  }
}
@keyframes toggle-track {
  0%, 50% {
    background: rgba(255, 247, 230, 0.18);
  }
  70%, 100% {
    background: rgba(47, 109, 246, 0.38);
  }
}
@keyframes state-play {
  0%, 50% {
    opacity: 1;
  }
  60%, 100% {
    opacity: 0;
  }
}
@keyframes state-pause {
  0%, 50% {
    opacity: 0;
  }
  60%, 100% {
    opacity: 1;
  }
}
@media (prefers-reduced-motion: reduce) {
  .marquee__track, .panel__toggle-knob, .panel__toggle-track,
  .panel__state-text--play, .panel__state-text--pause {
    animation: none !important;
  }
  .panel.is-demo .marquee__track {
    transform: translateX(-30%);
  }
  .panel.is-demo .panel__toggle-knob {
    transform: translateX(16px);
  }
  .panel.is-demo .panel__toggle-track {
    background: rgba(47, 109, 246, 0.38);
  }
  .panel.is-demo .panel__state-text--play {
    opacity: 0;
  }
  .panel.is-demo .panel__state-text--pause {
    opacity: 1;
  }
}