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);
}

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: min(420px, 94vw);
}

.hero__hint {
  margin: 0;
  color: rgba(255, 247, 230, 0.78);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.35;
  text-align: center;
}

.hero__panel {
  position: relative;
  width: 100%;
  height: 190px;
  border-radius: 16px;
  overflow: hidden;
  background: rgba(255, 247, 230, 0.04);
  box-shadow: 0 0 0 1px rgba(255, 247, 230, 0.14);
}

.hero__backdrop {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.hero__blob {
  position: absolute;
  width: 130px;
  height: 130px;
  border-radius: 999px;
  filter: blur(28px);
  opacity: 0.3;
}

.hero__blob--a {
  left: 8%;
  top: 6%;
  background: #4cd4a6;
}

.hero__blob--b {
  right: 6%;
  top: 2%;
  background: #ff9ebb;
}

.hero__blob--c {
  left: 30%;
  bottom: -12%;
  background: #6ec8ff;
}

.hero__play {
  position: absolute;
  right: 12px;
  top: 12px;
  z-index: 3;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: none;
  background: #fff7e6;
  color: #17141a;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 300ms ease-out;
}

.hero__play:hover {
  transform: scale(1.06);
}

.hero__play:focus-visible {
  outline: 2px solid #fff7e6;
  outline-offset: 2px;
}

.hero__play:active {
  transform: scale(0.96);
}

.hero__ico {
  width: 15px;
  height: 15px;
}

.hero__ico--pause {
  display: none;
}

.is-playing .hero__ico--play {
  display: none;
}

.is-playing .hero__ico--pause {
  display: block;
}

.hero__core {
  position: absolute;
  inset: 0 0 34px 0;
  display: grid;
  place-items: center;
  z-index: 1;
}

.hero__ring-wrap {
  position: relative;
  width: 128px;
  height: 128px;
  display: grid;
  place-items: center;
}

.hero__ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero__art {
  width: 56px;
  height: 56px;
  border-radius: 999px;
  background: #5b8cf8;
  box-shadow: 0 0 0 1px rgba(255, 247, 230, 0.2);
}

.hero__colorref {
  display: none;
  color: #5b8cf8;
}

.hero__bars {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 28px;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 4px;
  padding: 0 16px 8px;
}

.hero__bar {
  flex: 1 1 auto;
  max-width: 6px;
  height: 100%;
  border-radius: 4px 4px 0 0;
  background: rgba(255, 247, 230, 0.55);
  transform: scaleY(0.2);
  transform-origin: bottom center;
}

@media (max-width: 340px) {
  .hero__panel {
    height: 108px;
  }
  .hero__ring-wrap {
    width: 76px;
    height: 76px;
  }
  .hero__art {
    width: 32px;
    height: 32px;
  }
  .hero__bars {
    height: 20px;
  }
  .hero__play {
    width: 28px;
    height: 28px;
  }
  .hero__blob {
    width: 88px;
    height: 88px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .hero__play {
    transition: none;
  }
}