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);
}

.totop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: 48px;
  height: 48px;
  padding: 0 12px;
  border: 0;
  border-radius: 999px;
  background: #ffd23f;
  overflow: hidden;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  cursor: pointer;
  transition: width 220ms ease-out;
}

.totop:hover,
.totop:focus-visible,
.totop.is-demo-open {
  width: 132px;
}

.totop__arrow {
  flex: none;
  width: 20px;
  height: 20px;
  fill: none;
  stroke: #17141a;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.totop__label {
  font: 600 clamp(13px, 3.6vw, 14px)/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: #17141a;
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .totop {
    transition: none;
  }
}