.site-intro {
  display: none;
}

.js .site-intro {
  position: fixed;
  inset: var(--header-h) 0 0;
  z-index: 700;
  display: block;
  overflow: hidden;
  pointer-events: none;
  background:
    linear-gradient(rgba(13, 13, 13, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(13, 13, 13, 0.03) 1px, transparent 1px),
    var(--paper);
  background-size: 18px 18px, 18px 18px, auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.46s ease, visibility 0s linear 0.46s;
}

.site-intro::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, var(--paper) 0%, transparent 18%, transparent 74%, var(--paper) 100%);
  pointer-events: none;
  z-index: 2;
  opacity: 1;
  transition: opacity 0.32s ease;
}

.js .site-intro.is-running {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

.js .site-intro.is-clearing {
  opacity: 0;
  visibility: visible;
}

body.intro-is-running {
  overflow: hidden;
}

body.intro-is-running:not(.intro-is-revealing) .grid {
  opacity: 0 !important;
}

body.intro-is-revealing .grid {
  opacity: 1 !important;
  transition: opacity 0.34s ease;
}

.site-intro__tile {
  position: absolute;
  left: 0;
  top: 0;
  width: 110px;
  height: 78px;
  border: var(--border);
  background: var(--white);
  color: var(--black);
  overflow: hidden;
  transform: translate3d(var(--intro-x, 0), var(--intro-y, 0), 0) scale(var(--intro-scale, 1));
  transform-origin: center;
  clip-path: inset(0 calc(50% - 8px) 0 calc(50% - 8px));
  opacity: 0;
  transition:
    transform 0.72s cubic-bezier(0.26, 0.84, 0.22, 1),
    width 0.72s cubic-bezier(0.26, 0.84, 0.22, 1),
    height 0.72s cubic-bezier(0.26, 0.84, 0.22, 1),
    clip-path 0.84s cubic-bezier(0.24, 0.82, 0.18, 1),
    opacity 0.32s ease,
    background 0.32s ease,
    border-color 0.32s ease,
    color 0.32s ease;
  will-change: transform, width, height, opacity;
}

.site-intro__tile.is-born,
.site-intro__tile.is-picked {
  z-index: 3;
  opacity: 1;
}

.site-intro__tile.is-born {
  border-color: transparent;
  box-shadow: 0 0 22px rgba(13, 13, 13, 0.08);
}

.site-intro__tile.is-born:not(.is-picked) {
  background: transparent !important;
  box-shadow: none;
}

.site-intro__tile.is-picked {
  border: var(--border);
  clip-path: inset(0 0 0 0);
  box-shadow: 0 18px 48px rgba(13, 13, 13, 0.13);
}

.site-intro__tile.is-emerging {
  transition-duration: 0.96s;
}

.site-intro__tile.is-layout {
  z-index: 5;
  opacity: 1;
  clip-path: inset(0 0 0 0);
  border: var(--border);
  box-shadow: none;
  transition-duration: 0.58s;
  transition-timing-function: cubic-bezier(0.72, -0.04, 0.16, 1);
}

.site-intro__tile.is-fade {
  opacity: 0;
  transition: opacity 0.28s ease;
}

.site-intro__tile-code {
  position: absolute;
  top: -22%;
  left: 50%;
  z-index: 2;
  height: 144%;
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.08;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: pre;
  color: rgba(13, 13, 13, 0.76);
  text-shadow: 0 0 12px rgba(13, 13, 13, 0.28);
  writing-mode: vertical-rl;
  transform: translate3d(-50%, 0, 0);
  opacity: 1;
  animation: tileCodeRise 0.82s linear infinite;
  transition: opacity 0.42s ease, transform 0.74s cubic-bezier(0.24, 0.82, 0.18, 1);
  pointer-events: none;
}

.site-intro__tile > :not(.site-intro__tile-code) {
  opacity: 0;
  transition: opacity 0.36s ease 0.18s;
}

.site-intro__tile.is-picked > :not(.site-intro__tile-code),
.site-intro__tile.is-layout > :not(.site-intro__tile-code) {
  opacity: 1;
}

.site-intro__tile.is-picked .site-intro__tile-code {
  opacity: 0;
  transform: translate3d(-50%, 32px, 0);
}

.site-intro__rain {
  position: absolute;
  top: calc(var(--rain-shift) * -1);
  z-index: 1;
  width: 18px;
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1.12;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  color: rgba(13, 13, 13, 0.58);
  text-shadow: 0 0 10px rgba(13, 13, 13, 0.22);
  writing-mode: vertical-rl;
  animation: matrixRain var(--rain-duration, 2.6s) linear infinite;
  animation-delay: var(--rain-delay, 0s);
  will-change: transform, opacity;
}

.site-intro.is-picking .site-intro__rain {
  opacity: 0.12 !important;
  transition: opacity 0.42s ease;
}

@keyframes matrixRain {
  0% { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(0, var(--rain-shift, 420px), 0); }
}

@keyframes tileCodeRise {
  0% { transform: translate3d(-50%, -18px, 0); }
  100% { transform: translate3d(-50%, 22px, 0); }
}

@media (max-width: 540px) {
  .site-intro__tile {
    width: 92px;
    height: 70px;
  }

  .site-intro__rain {
    width: 14px;
    font-size: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .js .site-intro {
    display: none;
  }
}