:root {
  color-scheme: dark;
  --bg: #090909;
  --text: #e9e7e2;
  --muted: #706e69;
  --accent: #ff5722;
  --cube-size: clamp(250px, 31vw, 470px);
  font-family: Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--bg); scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

button { font: inherit; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.shell {
  position: relative;
  min-height: 100dvh;
  overflow: hidden;
  background:
    radial-gradient(circle at 52% 44%, rgba(255, 255, 255, .025), transparent 31%),
    var(--bg);
}

.masthead {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  min-height: 72px;
  padding: 22px 28px;
  font-size: 10px;
  line-height: 1.35;
  letter-spacing: .08em;
  color: #a8a59f;
  mix-blend-mode: difference;
}

.identity { display: grid; width: max-content; }

.masthead nav {
  display: flex;
  gap: 24px;
  font-size: 11px;
}

.masthead a { transition: color .25s ease; }
.masthead a:hover, .masthead a:focus-visible { color: #fff; }

.edition { justify-self: end; margin: 0; text-align: right; }

.stage {
  position: relative;
  min-height: 100dvh;
  isolation: isolate;
}

.brand-mark {
  position: absolute;
  z-index: 1;
  left: 2.4vw;
  bottom: -.035em;
  font-size: clamp(15rem, 36vw, 43rem);
  font-weight: 700;
  line-height: .68;
  letter-spacing: -.095em;
  color: var(--accent);
  user-select: none;
}

.project-meta {
  position: absolute;
  z-index: 8;
  left: 3vw;
  top: 35%;
  display: grid;
  grid-template-columns: 72px 180px;
  gap: 3px 14px;
  font-size: 10px;
  line-height: 1.35;
  color: #827f79;
}

.project-meta p { margin: 0; }
.project-meta__index { grid-row: span 2; }
.project-meta__title { color: #bbb8b2; }
.project-meta__type { letter-spacing: .08em; }

.cube-wrap {
  position: absolute;
  z-index: 10;
  left: 50%;
  top: 50%;
  width: var(--cube-size);
  transform: translate(-50%, -50%);
}

.scene {
  width: var(--cube-size);
  height: var(--cube-size);
  perspective: 1100px;
}

.cube {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transform: rotateX(-18deg) rotateY(32deg);
  will-change: transform;
}

.scene.has-focus .cube {
  transform-style: preserve-3d;
}

.face {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 12px;
  padding: 5px;
  background: #0d0d0d;
  backface-visibility: visible;
  transform-style: preserve-3d;
}

.tile {
  background-image: var(--image);
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  background-color: #080808;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.08);
  transform: translateZ(var(--idle-z));
  transform-style: preserve-3d;
  will-change: transform, filter, opacity;
  transition:
    transform .8s cubic-bezier(.16, 1, .3, 1),
    filter .55s ease,
    opacity .55s ease;
}

.scene.has-focus .tile {
  filter: brightness(.16) saturate(.3) blur(2.5px);
  opacity: .48;
  transform: translateZ(0) scale(.94);
}

.scene.has-focus .tile.is-active {
  filter: brightness(1.08) saturate(1.08);
  opacity: 1;
  z-index: 3;
  transform: translate3d(var(--scatter-x), var(--scatter-y), var(--scatter-z));
  box-shadow: 0 3px 8px rgba(0,0,0,.2), inset 0 0 0 1px rgba(255,255,255,.16);
}

.face--front { transform: rotateY(0deg) translateZ(calc(var(--cube-size) / 2)); }
.face--back { transform: rotateY(180deg) translateZ(calc(var(--cube-size) / 2)); }
.face--right { transform: rotateY(90deg) translateZ(calc(var(--cube-size) / 2)); }
.face--left { transform: rotateY(-90deg) translateZ(calc(var(--cube-size) / 2)); }
.face--top { transform: rotateX(90deg) translateZ(calc(var(--cube-size) / 2)); }
.face--bottom { transform: rotateX(-90deg) translateZ(calc(var(--cube-size) / 2)); }

.hint {
  margin: 30px 0 0;
  font-size: 10px;
  text-align: center;
  letter-spacing: .08em;
  color: #5f5d58;
}

.rail {
  position: absolute;
  z-index: 15;
  top: 0;
  right: 2.3vw;
  width: clamp(250px, 24vw, 420px);
  height: 100dvh;
  overflow: hidden;
}

.rail__track {
  display: grid;
  align-content: start;
  will-change: transform;
}

.project-link {
  appearance: none;
  display: block;
  width: 100%;
  height: 40px;
  padding: 0;
  border: 0;
  color: #5c5a56;
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition:
    color .25s ease,
    transform .16s ease-out,
    filter .35s ease,
    opacity .35s ease;
}

.project-link span {
  font-size: clamp(11px, .84vw, 14px);
  font-weight: 600;
  letter-spacing: -.025em;
  white-space: nowrap;
}

.rail.has-focus .project-link:not(.is-active) {
  color: #353431;
  filter: blur(1.8px);
  opacity: .42;
}

.project-link:hover,
.project-link:focus-visible,
.project-link.is-active {
  color: var(--accent);
  transform: translateX(18px);
  transition-duration: .25s, .45s, .35s, .35s;
  transition-timing-function: ease, cubic-bezier(.16, 1, .3, 1), ease, ease;
  outline: none;
}

.rail__fade {
  position: absolute;
  z-index: 2;
  left: 0;
  right: 0;
  height: 17vh;
  pointer-events: none;
}

.rail__fade--top { top: 0; background: linear-gradient(var(--bg), transparent); }
.rail__fade--bottom { bottom: 0; background: linear-gradient(transparent, var(--bg)); }

footer {
  position: absolute;
  z-index: 6;
  left: 3vw;
  right: 2.3vw;
  bottom: 22px;
  display: flex;
  justify-content: space-between;
  align-items: end;
  font-size: 9px;
  line-height: 1.35;
  letter-spacing: .08em;
  color: #4c4a46;
}

footer p { margin: 0; }

@media (max-width: 900px) {
  :root { --cube-size: clamp(210px, 56vw, 360px); }

  .masthead { grid-template-columns: 1fr auto; padding: 18px 16px; }
  .masthead nav { gap: 16px; }
  .edition { display: none; }

  .brand-mark {
    left: 2vw;
    bottom: 22vh;
    font-size: clamp(12rem, 55vw, 24rem);
    opacity: .94;
  }

  .cube-wrap { left: 50%; top: 42%; }
  .hint { display: none; }

  .project-meta {
    top: 88px;
    bottom: auto;
    left: 16px;
    grid-template-columns: 52px 1fr;
  }

  .rail {
    top: auto;
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 20vh;
    padding: 0 16px;
  }

  .rail__track { padding: 0; }
  .project-link { height: 42px; }
  .rail__fade { height: 50px; }
  footer { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .cube, .tile, .project-link { transition-duration: .01ms; }
}