html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #ff4d1f;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.caption {
  position: absolute;
  z-index: 1;
  top: 24px;
  left: 24px;
  margin: 0;
  color: #fff7e6;
  font-weight: 700;
  font-size: clamp(16px, 5vw, 22px);
  line-height: 1;
  font-family: inherit;
}

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

.layer {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 55%;
  display: flex;
  width: 200%;
}

.wave {
  width: 50%;
  height: 100%;
  flex: none;
  display: block;
  fill: #fff7e6;
}

.layer--back {
  opacity: 0.4;
  animation: drift 6s linear infinite;
}

.layer--front {
  opacity: 0.85;
  animation: drift 3.9s linear infinite;
}

@keyframes drift {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}
@media (prefers-reduced-motion: reduce) {
  .layer {
    animation: none;
  }
}