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);
}

.ssc {
  display: grid;
  justify-items: center;
  gap: 12px;
}

.ssc__badge {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  opacity: 0;
  transform: scale(0.7);
  transition: opacity 220ms ease-out, transform 220ms cubic-bezier(0.2, 1.4, 0.4, 1);
}

.ssc__badge--show {
  opacity: 1;
  transform: scale(1);
}

.ssc__circle {
  fill: #4cd4a6;
  opacity: 0.16;
}

.ssc__check {
  fill: none;
  stroke: #4cd4a6;
  stroke-width: 3.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.ssc__label {
  font: 600 13px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  color: rgba(23, 20, 26, 0.64);
}

.ssc__btn {
  border: 0;
  border-radius: 12px;
  padding: 8px 16px;
  background: #17141a;
  color: #fff7e6;
  font: 700 13px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  cursor: pointer;
  transition: transform 140ms ease-out;
}
.ssc__btn:active {
  transform: scale(0.96);
}

@media (max-width: 340px) {
  .ssc__badge {
    width: 44px;
    height: 44px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ssc__badge {
    transition: none;
  }
  .ssc__btn {
    transition: none;
  }
}