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);
}

.vcard {
  width: 260px;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 14px 24px rgba(23, 20, 26, 0.32);
  background: #0b0d14;
}

.vcard__thumb {
  position: relative;
  height: 146px;
  display: grid;
  place-items: center;
  background: radial-gradient(120% 90% at 30% 20%, rgba(47, 109, 246, 0.55), transparent 60%), linear-gradient(160deg, #1a2036, #0b0d14 70%);
}

.vcard__ring {
  position: absolute;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  opacity: 0;
  transform: scale(0.8);
}

.vcard__play {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 0;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  cursor: pointer;
  transition: transform 220ms ease-out, background 220ms ease-out;
}

.vcard__play:hover {
  background: rgba(255, 255, 255, 0.28);
  transform: scale(1.06);
}

.vcard__play svg {
  transform: translateX(2px);
}

.vcard__time {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 4px 8px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.6);
  color: #fff;
  font: 700 11px/1 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
}

.vcard__bar {
  height: 4px;
  background: rgba(255, 255, 255, 0.14);
}

.vcard__bar-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: #2f6df6;
}

.stage.is-demo .vcard__ring {
  animation: vcard-ping 2s ease-out infinite;
}

@keyframes vcard-ping {
  0% {
    opacity: 0.55;
    transform: scale(0.8);
  }
  70% {
    opacity: 0;
    transform: scale(1.35);
  }
  100% {
    opacity: 0;
    transform: scale(1.35);
  }
}
@media (prefers-reduced-motion: reduce) {
  .stage.is-demo .vcard__ring {
    animation: none;
    opacity: 0;
  }
}