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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.gt {
  width: min(240px, 82vw);
}

.gt__radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.gt__nav {
  position: relative;
  display: flex;
  gap: 8px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(12px) saturate(160%);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
}

.gt__tab {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  box-sizing: border-box;
  width: 68px;
  text-align: center;
  padding: 8px 0;
  font: 600 clamp(11px, 3.2vw, 13px)/1 -apple-system, "Segoe UI", sans-serif;
  color: #17141a;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.gt__pill {
  position: absolute;
  top: 4px;
  left: 4px;
  bottom: 4px;
  box-sizing: border-box;
  width: 68px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(6px);
  box-shadow: 0 6px 12px rgba(23, 20, 26, 0.32);
  transform: translateX(0);
  transition: transform 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

#gt-1:checked ~ .gt__nav .gt__pill {
  transform: translateX(0);
}

#gt-2:checked ~ .gt__nav .gt__pill {
  transform: translateX(calc(68px + 8px));
}

#gt-3:checked ~ .gt__nav .gt__pill {
  transform: translateX(calc((68px + 8px) * 2));
}

.gt.is-demo .gt__pill {
  animation: gt-loop 2s cubic-bezier(0.2, 1.4, 0.4, 1) infinite;
}

@keyframes gt-loop {
  0%, 15% {
    transform: translateX(0);
  }
  33%, 48% {
    transform: translateX(calc(68px + 8px));
  }
  66%, 81% {
    transform: translateX(calc((68px + 8px) * 2));
  }
  100% {
    transform: translateX(0);
  }
}
@media (prefers-reduced-motion: reduce) {
  .gt__pill {
    transition: none;
  }
  .gt.is-demo .gt__pill {
    animation: none !important;
  }
}