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);
}

.pt {
  position: relative;
  width: min(400px, 96vw);
  padding-top: 16px;
  overflow: hidden;
}

.pt__sheen {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, #2f6df6, transparent);
  animation: pt-sheen 2.6s linear infinite;
}

@keyframes pt-sheen {
  0% {
    transform: translateX(-100%);
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translateX(100%);
    opacity: 0;
  }
}
.pt__top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.pt__mark {
  width: 22px;
  height: 22px;
  border-radius: 8px;
  background: #2f6df6;
}

.pt__tagline {
  margin: 0;
  font-weight: 600;
  font-size: 11px;
  line-height: 1.3;
  font-family: inherit;
  color: rgba(255, 247, 230, 0.55);
}

.pt__group {
  border-top: 1px solid rgba(255, 247, 230, 0.12);
  padding-top: 8px;
}

.pt__group-toggle {
  display: block;
  width: 100%;
  box-sizing: border-box;
  text-align: left;
  border: 0;
  cursor: pointer;
  padding: 4px 0;
  background: transparent;
  color: #fff7e6;
  font-weight: 700;
  font-size: 11px;
  line-height: 1;
  font-family: inherit;
  letter-spacing: 0.04em;
}

.pt__links-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.pt__links-wrap.is-open {
  grid-template-rows: 1fr;
}

.pt__links {
  list-style: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.pt__links li {
  padding-top: 8px;
}

.pt__links a {
  color: rgba(255, 247, 230, 0.68);
  text-decoration: none;
  font-weight: 500;
  font-size: 12px;
  line-height: 1.6;
  font-family: inherit;
}

@media (prefers-reduced-motion: reduce) {
  .pt__sheen {
    animation: none !important;
    opacity: 0 !important;
  }
  .pt__links-wrap {
    transition: none !important;
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .pt__tagline, .pt__mark {
    display: none;
  }
  .pt {
    padding-top: 8px;
  }
  .pt__top {
    margin-bottom: 8px;
  }
  .pt__group {
    padding-top: 4px;
  }
  .pt__links li {
    padding-top: 4px;
  }
  .pt__links a {
    font-size: 11px;
  }
}