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);
}

.footer {
  box-sizing: border-box;
  display: flex;
  align-items: stretch;
  width: clamp(260px, 90vw, 420px);
  padding: 16px 12px 12px;
  border: 0;
  border-top: 6px solid #17141a;
  border-radius: 0;
  background: #fff7e6;
}

.footer__col {
  box-sizing: border-box;
  flex: 1;
  min-width: 0;
  padding: 0 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer__col:first-child {
  padding-left: 0;
}

.footer__heading {
  margin: 0;
  color: #17141a;
  opacity: 0.72;
  font-weight: 800;
  font-size: clamp(9px, 2.2vw, 10px);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer__col:first-child .footer__heading {
  color: #0a4fe8;
  opacity: 1;
}

.footer__link {
  margin: 0;
  color: #17141a;
  font-weight: 700;
  font-size: clamp(11px, 2.6vw, 13px);
}

.footer__rule {
  flex: 0 0 auto;
  width: 3px;
  background: #17141a;
  transform-origin: top;
  transform: scaleY(0);
  animation: drawLine 2s ease-out infinite;
}

.footer__rule--b {
  animation-delay: -0.6s;
}

@keyframes drawLine {
  0%, 100% {
    transform: scaleY(0);
  }
  25%, 85% {
    transform: scaleY(1);
  }
}
@media (prefers-reduced-motion: reduce) {
  .footer__rule {
    animation: none !important;
    transform: scaleY(1);
  }
}