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);
}

.blur {
  margin: 0;
  font-weight: 800;
  font-size: clamp(28px, 8.6vw, 44px);
  line-height: 1.2;
  font-family: inherit;
  color: #fff7e6;
  text-align: center;
}

.blur .letter {
  display: inline-block;
  animation: blur-focus 2s ease-out infinite;
  animation-delay: calc(var(--i) * 40ms + var(--n) * 80ms);
}

@keyframes blur-focus {
  0%, 4% {
    opacity: 0;
    filter: blur(14px);
  }
  30%, 76% {
    opacity: 1;
    filter: blur(0);
  }
  96%, 100% {
    opacity: 0;
    filter: blur(14px);
  }
}
@media (prefers-reduced-motion: reduce) {
  .blur .letter {
    animation: none;
    opacity: 1;
    filter: none;
  }
}