html[data-prototype-focus="intro-lab"]
  .landing-view
  > :not([data-checkpoint="11"]) {
  display: none;
}

.intro-lab {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  background: #fff;
  color: #111;
}

.intro-lab-stage {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  overflow: hidden;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), #eef0ef 50%, transparent calc(50% + 0.5px)),
    #fff;
  isolation: isolate;
  transition: background-color 420ms ease;
}

.intro-lab-stage::before,
.intro-lab-stage::after {
  position: absolute;
  z-index: 0;
  content: "";
  pointer-events: none;
}

.intro-lab-stage::before {
  inset: 0;
  background:
    linear-gradient(180deg, transparent 20%, rgb(17 17 17 / 3%) 20.1%, transparent 20.2%),
    linear-gradient(180deg, transparent 80%, rgb(17 17 17 / 3%) 80.1%, transparent 80.2%);
}

.intro-lab-stage::after {
  top: 0;
  right: 0;
  bottom: 0;
  width: 38%;
  background: linear-gradient(90deg, transparent, rgb(232 235 234 / 32%));
  opacity: 0;
  transition: opacity 420ms ease;
}

.intro-lab-stage[data-intro-variant="1"]::after {
  opacity: 1;
}

.intro-lab-stage[data-intro-variant="4"] {
  background: #f6f6f3;
}

.intro-lab-stage[data-intro-variant="5"] {
  background:
    linear-gradient(90deg, #fafafa 0 49.95%, #e3e6e5 50%, #fafafa 50.05% 100%);
}

.intro-lab-canvas {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.intro-lab-particle-source {
  position: absolute;
  z-index: 1;
  inset: 0;
  display: grid;
  align-content: center;
  justify-items: center;
  margin: 0;
  padding: 8rem var(--header-gutter) 6rem;
  font-size: clamp(3.8rem, 11vw, 11rem);
  font-weight: 720;
  letter-spacing: -0.085em;
  line-height: 0.84;
  text-align: center;
  pointer-events: none;
  transition: opacity 260ms ease;
}

.intro-lab-particle-source span {
  display: block;
}

.intro-lab-stage[data-enhanced="true"] .intro-lab-particle-source {
  opacity: 0;
}

.intro-lab-stage[data-particle-layout="monument"]
  .intro-lab-particle-source
  span:last-child {
  margin-top: 2rem;
  font-size: 0.3em;
  letter-spacing: -0.065em;
}

.intro-lab-stage[data-particle-layout="editorial-right"]
  .intro-lab-particle-source {
  right: 0;
  left: 48%;
  font-size: clamp(8rem, 24vw, 22rem);
}

.intro-lab-stage[data-particle-layout="korean"]
  .intro-lab-particle-source {
  align-content: center;
  justify-items: start;
  padding-left: 26vw;
  font-size: clamp(4rem, 13vw, 12rem);
  text-align: left;
}

.intro-lab-stage[data-particle-layout="dual"]
  .intro-lab-particle-source {
  display: flex;
  align-items: center;
  justify-content: space-around;
  font-size: clamp(4rem, 13vw, 12rem);
}

.intro-lab-panel {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
}

.intro-lab-panel[hidden] {
  display: none;
}

.intro-lab-panel p,
.intro-lab-panel strong,
.intro-lab-panel span {
  margin: 0;
}

.intro-lab-kicker {
  position: absolute;
  top: clamp(8.5rem, 24vh, 12rem);
  right: var(--header-gutter);
  left: var(--header-gutter);
  font-size: clamp(0.58rem, 0.68vw, 0.72rem);
  font-weight: 760;
  letter-spacing: 0.24em;
  text-align: center;
}

.intro-lab-meta {
  position: absolute;
  top: 50%;
  display: grid;
  gap: 0.45rem;
  color: #737977;
  font-size: 0.55rem;
  font-weight: 740;
  letter-spacing: 0.18em;
  transform: translateY(-50%);
}

.intro-lab-meta-left {
  left: var(--header-gutter);
}

.intro-lab-meta-right {
  right: var(--header-gutter);
  text-align: right;
}

.intro-lab-panel-editorial .intro-lab-kicker {
  right: auto;
  width: 38%;
  text-align: left;
}

.intro-lab-editorial-copy {
  position: absolute;
  top: 50%;
  left: var(--header-gutter);
  display: grid;
  width: 38%;
  gap: 0.15em;
  font-size: clamp(2.7rem, 5.6vw, 6rem);
  font-weight: 620;
  letter-spacing: -0.075em;
  line-height: 0.88;
  transform: translateY(-50%);
}

.intro-lab-editorial-copy strong {
  margin-top: 0.28em;
  color: #777e7c;
  font-size: 0.28em;
  font-weight: 740;
  letter-spacing: 0.16em;
}

.intro-lab-editorial-note {
  position: absolute;
  bottom: clamp(5.7rem, 12vh, 8rem);
  left: var(--header-gutter);
  color: #777e7c;
  font-size: 0.5rem;
  font-weight: 740;
  letter-spacing: 0.2em;
}

.intro-lab-morph-brand,
.intro-lab-morph-caption {
  position: absolute;
  right: 0;
  left: 0;
  text-align: center;
}

.intro-lab-morph-brand {
  top: clamp(8.7rem, 25vh, 12.5rem);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.28em;
}

.intro-lab-morph-caption {
  bottom: clamp(6rem, 14vh, 9rem);
  color: #6f7573;
  font-size: 0.54rem;
  font-weight: 740;
  letter-spacing: 0.22em;
}

.intro-lab-morph-track {
  position: absolute;
  right: var(--header-gutter);
  bottom: clamp(6rem, 14vh, 9rem);
  display: flex;
  gap: 0.35rem;
}

.intro-lab-morph-track i {
  width: 1.8rem;
  height: 1px;
  background: #d8dcdb;
}

.intro-lab-morph-track i:first-child {
  background: #111;
}

.intro-lab-stage[data-morph-step="1"] .intro-lab-morph-track i:first-child,
.intro-lab-stage[data-morph-step="2"] .intro-lab-morph-track i:first-child,
.intro-lab-stage[data-morph-step="3"] .intro-lab-morph-track i:first-child {
  background: #d8dcdb;
}

.intro-lab-stage[data-morph-step="1"] .intro-lab-morph-track i:nth-child(2),
.intro-lab-stage[data-morph-step="2"] .intro-lab-morph-track i:nth-child(3),
.intro-lab-stage[data-morph-step="3"] .intro-lab-morph-track i:nth-child(4) {
  background: #111;
}

.intro-lab-korean-brand {
  position: absolute;
  top: 50%;
  left: var(--header-gutter);
  font-size: clamp(2.8rem, 5.2vw, 5.6rem);
  font-weight: 760;
  letter-spacing: -0.08em;
  line-height: 0.78;
  transform: translateY(-50%);
}

.intro-lab-korean-meta {
  position: absolute;
  right: var(--header-gutter);
  bottom: clamp(5.7rem, 12vh, 8rem);
  color: #6f7573;
  font-size: 0.52rem;
  font-weight: 740;
  letter-spacing: 0.15em;
  line-height: 1.8;
  text-align: right;
}

.intro-lab-frame-copy {
  position: absolute;
  top: 50%;
  right: 0;
  left: 0;
  display: grid;
  justify-items: center;
  gap: 0.75rem;
  text-align: center;
  transform: translateY(-50%);
}

.intro-lab-frame-copy p {
  font-size: clamp(4rem, 10vw, 10rem);
  font-weight: 730;
  letter-spacing: -0.09em;
  line-height: 0.82;
}

.intro-lab-frame-copy strong {
  font-size: clamp(1.1rem, 2.2vw, 2.2rem);
  font-weight: 590;
  letter-spacing: -0.055em;
}

.intro-lab-frame-copy span,
.intro-lab-frame-corner {
  color: #747a78;
  font-size: 0.52rem;
  font-weight: 740;
  letter-spacing: 0.18em;
}

.intro-lab-frame-corner {
  position: absolute;
  top: clamp(7.2rem, 15vh, 9rem);
  right: calc(var(--header-gutter) + 1rem);
}

.intro-lab-dual-center {
  position: absolute;
  top: 50%;
  left: 50%;
  padding: 1.2rem 0.8rem;
  background: #fafafa;
  font-size: 0.54rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  line-height: 1.75;
  text-align: center;
  transform: translate(-50%, -50%);
}

.intro-lab-dual-meta {
  position: absolute;
  right: 0;
  bottom: clamp(6rem, 13vh, 8.5rem);
  left: 0;
  color: #717775;
  font-size: 0.52rem;
  font-weight: 740;
  letter-spacing: 0.2em;
  text-align: center;
}

.intro-lab-controls,
.intro-lab-effect-controls {
  position: absolute;
  z-index: 8;
  bottom: 1.15rem;
  display: flex;
  align-items: stretch;
  gap: 0.2rem;
  padding: 0.25rem;
  border: 1px solid #e0e3e2;
  border-radius: 999px;
  background: rgb(255 255 255 / 88%);
  box-shadow: 0 0.6rem 2rem rgb(15 18 17 / 7%);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.intro-lab-controls {
  left: var(--header-gutter);
}

.intro-lab-effect-controls {
  right: var(--header-gutter);
}

.intro-lab-controls button,
.intro-lab-effect-controls button {
  min-width: 2rem;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: #777e7c;
  cursor: pointer;
}

.intro-lab-controls output,
.intro-lab-effect-controls output {
  display: grid;
  min-width: 10.5rem;
  align-content: center;
  padding: 0.35rem 1rem 0.4rem;
  border-radius: 999px;
  background: #111;
  color: #fff;
  line-height: 1.05;
}

.intro-lab-effect-controls output {
  min-width: 7.4rem;
}

.intro-lab-controls output span,
.intro-lab-effect-controls output span {
  color: rgb(255 255 255 / 55%);
  font-size: 0.45rem;
  font-weight: 760;
  letter-spacing: 0.13em;
}

.intro-lab-controls output strong,
.intro-lab-effect-controls output strong {
  margin-top: 0.18rem;
  font-size: 0.6rem;
  font-weight: 740;
  letter-spacing: 0.04em;
}

.intro-lab-guide {
  position: absolute;
  z-index: 7;
  right: 0;
  bottom: 1.7rem;
  left: 0;
  margin: 0;
  color: #8c9290;
  font-size: 0.46rem;
  font-weight: 720;
  letter-spacing: 0.18em;
  text-align: center;
  pointer-events: none;
}

@media (max-width: 48rem) {
  .intro-lab-stage {
    background: #fff;
  }

  .intro-lab-particle-source {
    padding: 7rem 0.75rem 8rem;
    font-size: clamp(3.2rem, 20vw, 5.4rem);
  }

  .intro-lab-stage[data-particle-layout="editorial-right"]
    .intro-lab-particle-source {
    top: 20%;
    right: 0;
    bottom: auto;
    left: 40%;
    height: 45%;
    font-size: 34vw;
  }

  .intro-lab-stage[data-particle-layout="korean"]
    .intro-lab-particle-source {
    padding-left: 1rem;
    font-size: 18vw;
  }

  .intro-lab-stage[data-particle-layout="dual"]
    .intro-lab-particle-source {
    display: grid;
    align-content: center;
    gap: 0.7rem;
    font-size: 22vw;
  }

  .intro-lab-kicker {
    top: 7rem;
    right: 1rem;
    left: 1rem;
    font-size: 0.48rem;
  }

  .intro-lab-meta {
    top: auto;
    bottom: 7rem;
    font-size: 0.44rem;
    transform: none;
  }

  .intro-lab-meta-left,
  .intro-lab-editorial-copy,
  .intro-lab-editorial-note,
  .intro-lab-korean-brand {
    left: 1rem;
  }

  .intro-lab-meta-right,
  .intro-lab-korean-meta {
    right: 1rem;
  }

  .intro-lab-panel-editorial .intro-lab-kicker,
  .intro-lab-editorial-copy {
    width: 48%;
  }

  .intro-lab-editorial-copy {
    font-size: clamp(2.2rem, 12vw, 3.3rem);
  }

  .intro-lab-editorial-note,
  .intro-lab-korean-meta,
  .intro-lab-dual-meta {
    bottom: 7.2rem;
  }

  .intro-lab-morph-brand {
    top: 7rem;
  }

  .intro-lab-morph-caption {
    bottom: 7.3rem;
  }

  .intro-lab-morph-track,
  .intro-lab-effect-controls,
  .intro-lab-guide {
    display: none;
  }

  .intro-lab-korean-brand {
    top: 7rem;
    font-size: 2.5rem;
    transform: none;
  }

  .intro-lab-frame-copy {
    padding: 0 1rem;
  }

  .intro-lab-frame-copy p {
    font-size: clamp(3.2rem, 18vw, 5rem);
  }

  .intro-lab-frame-corner {
    top: 7rem;
    right: 1rem;
    font-size: 0.42rem;
  }

  .intro-lab-controls {
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
    justify-content: space-between;
  }

  .intro-lab-controls output {
    min-width: 0;
    flex: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .intro-lab-stage,
  .intro-lab-stage::after {
    transition: none;
  }
}