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);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.seg {
  border: 0;
  margin: 0;
  padding: 0;
  width: min(280px, 84vw);
}

.seg__radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 1px;
  height: 1px;
}

.seg__track {
  position: relative;
  display: flex;
  gap: 0;
  padding: 4px;
  background: rgba(255, 247, 230, 0.14);
  border-radius: 999px;
}

.seg__tab {
  position: relative;
  z-index: 1;
  flex: 1 1 0;
  text-align: center;
  padding: 8px 4px;
  font-weight: 600;
  font-size: clamp(12px, 3.4vw, 14px);
  line-height: 1;
  font-family: inherit;
  color: rgba(255, 247, 230, 0.55);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: color 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.seg__pill {
  position: absolute;
  top: 4px;
  left: 4px;
  bottom: 4px;
  width: calc((100% - 4px * 2) / 3);
  border-radius: 999px;
  background: #2f6df6;
  transform: translateX(0);
  transform-origin: center;
  transition: transform 220ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

#seg1-2:checked ~ .seg__track .seg__pill {
  transform: translateX(100%);
}

#seg1-3:checked ~ .seg__track .seg__pill {
  transform: translateX(200%);
}

#seg1-1:checked ~ .seg__track .seg__tab:nth-child(2) {
  color: #fff7e6;
}

#seg1-2:checked ~ .seg__track .seg__tab:nth-child(3) {
  color: #fff7e6;
}

#seg1-3:checked ~ .seg__track .seg__tab:nth-child(4) {
  color: #fff7e6;
}

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

@keyframes seg-loop {
  0%, 15% {
    transform: translateX(0);
  }
  33%, 48% {
    transform: translateX(100%);
  }
  66%, 81% {
    transform: translateX(200%);
  }
  100% {
    transform: translateX(0);
  }
}
@keyframes seg-loop-jelly {
  0%, 15% {
    transform: translateX(0%) scaleX(1);
  }
  22% {
    transform: translateX(58%) scaleX(1.25);
  }
  30% {
    transform: translateX(103%) scaleX(1.05);
  }
  33%, 48% {
    transform: translateX(100%) scaleX(1);
  }
  55% {
    transform: translateX(158%) scaleX(1.25);
  }
  63% {
    transform: translateX(203%) scaleX(1.05);
  }
  66%, 81% {
    transform: translateX(200%) scaleX(1);
  }
  88% {
    transform: translateX(92%) scaleX(1.25);
  }
  96% {
    transform: translateX(-3%) scaleX(1.05);
  }
  100% {
    transform: translateX(0%) scaleX(1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .seg__pill {
    transition: none;
  }
  .seg.is-demo .seg__pill {
    animation: none !important;
  }
}