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);
}

.ls-block {
  display: grid;
  gap: 4px;
  text-align: center;
}

.ls-line {
  margin: 0;
  font: 800 clamp(20px, 6vw, 30px)/1.2 -apple-system, "Segoe UI", sans-serif;
  color: #2f6df6;
  opacity: 0;
  filter: blur(7px);
}

.ls-line--l {
  transform: translateX(-40px);
}

.ls-line--r {
  transform: translateX(40px);
}

@keyframes ls-in-l {
  0% {
    opacity: 0;
    transform: translateX(-40px);
    filter: blur(7px);
  }
  25%, 80% {
    opacity: 1;
    transform: none;
    filter: blur(0);
  }
  100% {
    opacity: 0;
    transform: translateX(-40px);
    filter: blur(7px);
  }
}
@keyframes ls-in-r {
  0% {
    opacity: 0;
    transform: translateX(40px);
    filter: blur(7px);
  }
  25%, 80% {
    opacity: 1;
    transform: none;
    filter: blur(0);
  }
  100% {
    opacity: 0;
    transform: translateX(40px);
    filter: blur(7px);
  }
}
.ls-block.is-demo .ls-line--l {
  animation: ls-in-l 2s linear(0, 0.051, 0.176, 0.341, 0.518, 0.685, 0.831, 0.947, 1.032, 1.087, 1.117, 1.126, 1.121, 1.105, 1.085, 1.062, 1.041, 1.022, 1.008, 0.997, 1) infinite;
}

.ls-block.is-demo .ls-line--r {
  animation: ls-in-r 2s linear(0, 0.051, 0.176, 0.341, 0.518, 0.685, 0.831, 0.947, 1.032, 1.087, 1.117, 1.126, 1.121, 1.105, 1.085, 1.062, 1.041, 1.022, 1.008, 0.997, 1) infinite;
  animation-delay: 160ms;
}

@media (prefers-reduced-motion: reduce) {
  .ls-line,
  .ls-block.is-demo .ls-line {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
}