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);
}

.neon {
  position: relative;
  isolation: isolate;
  margin: 0;
  font-weight: 800;
  font-size: clamp(26px, 8vw, 42px);
  line-height: 1.2;
  font-family: inherit;
  text-align: center;
  background: linear-gradient(90deg, #2f6df6, #fff7e6);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.neon::before {
  content: attr(data-text);
  position: absolute;
  inset: 0;
  z-index: -1;
  background: inherit;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  filter: blur(8px);
  animation: breathe 2s linear infinite;
}

@keyframes breathe {
  0%, 10% {
    filter: blur(4px);
    opacity: 0.28;
  }
  15%, 25% {
    filter: blur(20px);
    opacity: 1;
  }
  30%, 40% {
    filter: blur(4px);
    opacity: 0.28;
  }
  45%, 55% {
    filter: blur(20px);
    opacity: 1;
  }
  60%, 70% {
    filter: blur(4px);
    opacity: 0.28;
  }
  75%, 85% {
    filter: blur(20px);
    opacity: 1;
  }
  90%, 100% {
    filter: blur(4px);
    opacity: 0.28;
  }
}
@media (prefers-reduced-motion: reduce) {
  .neon::before {
    animation: none;
    filter: blur(10px);
    opacity: 0.85;
  }
}