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);
}

.ts04-track {
  display: flex;
  align-items: center;
  gap: 0;
}

.ts04-node {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: rgba(23, 20, 26, 0.16);
  flex: 0 0 auto;
}
.ts04-node.is-done {
  background: #2f6df6;
}

.ts04-line {
  width: 40px;
  height: 3px;
  background: rgba(23, 20, 26, 0.16);
  flex: 0 0 auto;
}
.ts04-line.is-done {
  background: #2f6df6;
}

.ts04-step {
  position: relative;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
}

.ts04-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid #2f6df6;
  opacity: 0;
}

.ts04-step.is-demo .ts04-ring {
  animation: ts04-pulse 2s ease-out infinite;
}

@keyframes ts04-pulse {
  0% {
    transform: scale(0.7);
    opacity: 0.8;
  }
  70% {
    transform: scale(1.8);
    opacity: 0;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}
.ts04-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #0a4fe8;
  color: #fff7e6;
  display: grid;
  place-items: center;
  font: 700 13px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

@media (prefers-reduced-motion: reduce) {
  .ts04-ring, .ts04-step.is-demo .ts04-ring {
    animation: none !important;
    opacity: 0.6 !important;
    transform: scale(1) !important;
  }
}