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);
}

.wf {
  width: min(400px, 88vw);
}

.wf__scroll {
  height: clamp(150px, 62vh, 216px);
  overflow-y: auto;
  scrollbar-width: none;
}
.wf__scroll::-webkit-scrollbar {
  display: none;
}

.wf__spacer {
  height: 32%;
}

.wf__line {
  margin: 0;
  padding: 0 16px;
  text-align: center;
  font: 700 clamp(24px, 6vw, 34px)/1.5 -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  letter-spacing: -0.01em;
}

.wf__w {
  color: rgba(23, 20, 26, 0.16);
}

@supports (animation-timeline: view()) {
  .wf__w:not(.is-demo) {
    animation: wf-in linear both;
    animation-timeline: view();
    animation-range: entry 0% cover 42%;
  }
}
@supports not (animation-timeline: view()) {
  .wf__w:not(.is-demo) {
    color: #17141a;
  }
}
@keyframes wf-in {
  from {
    color: rgba(23, 20, 26, 0.16);
  }
  to {
    color: #17141a;
  }
}
.wf__w.is-demo {
  animation: wf-loop 2s linear infinite;
}

.wf__w.is-demo:nth-of-type(1) {
  animation-delay: 0ms;
}

.wf__w.is-demo:nth-of-type(2) {
  animation-delay: 140ms;
}

.wf__w.is-demo:nth-of-type(3) {
  animation-delay: 280ms;
}

.wf__w.is-demo:nth-of-type(4) {
  animation-delay: 420ms;
}

.wf__w.is-demo:nth-of-type(5) {
  animation-delay: 560ms;
}

.wf__w.is-demo:nth-of-type(6) {
  animation-delay: 700ms;
}

@keyframes wf-loop {
  0% {
    color: rgba(23, 20, 26, 0.16);
  }
  18% {
    color: #17141a;
  }
  82% {
    color: #17141a;
  }
  100% {
    color: rgba(23, 20, 26, 0.16);
  }
}
@media (prefers-reduced-motion: reduce) {
  .wf__w.is-demo {
    animation: none !important;
    color: #17141a !important;
  }
  .wf__scroll {
    scroll-behavior: auto;
  }
}