:root {
  --bg: #181818;
  --text: #d2d2d2;
  --muted: #9e9e9e;
  --cube-half: 250px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: "Quicksand", "Helvetica Neue", Arial, sans-serif;
  font-weight: 320;
}

/* Desktop: one third of the viewport width. */
.site-shell {
  width: 33.333vw;
  margin: 0 auto;
  padding: 14px 0 70px;
}

.top-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
  font-size: 11px;
  color: var(--muted);
}
.top-nav a {
  color: inherit;
  text-decoration: none;
  transition: color .2s ease;
}
.top-nav a:hover { color: #fff; }
.lang {
  border: 0;
  background: transparent;
  padding: 0 0 0 6px;
  cursor: pointer;
  font-size: 13px;
}

.brand {
  text-align: center;
  padding: 40px 0 48px;
}
.logo {
  font-size: clamp(28px, 2.55vw, 47px);
  line-height: 1;
  letter-spacing: .16em;
  font-weight: 300;
  white-space: nowrap;
}
.tagline {
  margin-top: 12px;
  font-size: clamp(11px, .88vw, 17px);
  letter-spacing: .24em;
  color: #aaa;
  white-space: nowrap;
}

.hero-cube {
  position: relative;
  width: 100%;
}

/* The rotating object may project outside its square while turning, but all
   site typography stays visually above it. */
.scene {
  z-index: 1;
}
.top-nav,
.brand,
.copy {
  position: relative;
  z-index: 10;
}

.scene {
  width: 68.425%;
  max-width: 68.425%;
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  position: relative;
  perspective: 6000px;
  perspective-origin: 50% 50%;
  overflow: visible;
}

.turner,
.cube {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transform-origin: 50% 50%;
}

.turner { will-change: transform; }
.cube { will-change: transform; }

.face {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #111;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform-style: preserve-3d;
}

.face-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  user-select: none;
  pointer-events: none;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transform-origin: 50% 50%;
}

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

.arrow {
  position: absolute;
  top: 50%;
  z-index: 5;
  width: 42px;
  height: 78px;
  padding: 0;
  transform: translateY(-50%);
  border: 0;
  background: transparent;
  cursor: pointer;
  opacity: .56;
  transition: opacity .28s ease;
}
.arrow img {
  display: block;
  width: 27px;
  height: 54px;
  margin: auto;
  object-fit: contain;
  pointer-events: none;
  transition: filter .28s ease, opacity .28s ease;
}
.arrow:hover { opacity: 1; }
.arrow:hover img { filter: brightness(0) invert(1); }
.arrow:active { opacity: .78; }
/* Cube is smaller now, so keep the arrows visually balanced a bit outside its sides. */
.arrow-left { left: calc(15.7875% - 114px); }
.arrow-right { right: calc(15.7875% - 114px); }
.arrow-right img { transform: scaleX(-1); }

.copy {
  padding-top: 36px;
  text-align: center;
}
.copy h1 {
  margin: 0 0 16px;
  font-size: 13px;
  line-height: 1.45;
  font-weight: 400;
  letter-spacing: .01em;
  color: #ededed;
}
.copy p {
  margin: 0 auto 13px;
  max-width: 92%;
  font-size: 13px;
  line-height: 1.65;
  color: #9f9f9f;
}

@media (max-width: 760px) {
  .site-shell {
    width: 88vw;
    padding-top: 12px;
  }
  .top-nav {
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 5px;
    scrollbar-width: none;
  }
  .top-nav::-webkit-scrollbar { display: none; }
  .brand { padding: 34px 0 36px; }
  .logo { font-size: clamp(29px, 8vw, 44px); }
  .tagline { font-size: 11px; letter-spacing: .18em; }

  /* Smaller cube on phones so a true 3D turn has room to open. */
  .scene {
    width: 57.5vw;
    max-width: 57.5vw;
  }
  .arrow-left { left: -6vw; }
  .arrow-right { right: -6vw; }
  .arrow {
    width: 34px;
    height: 64px;
  }
  .arrow img {
    width: 21px;
    height: 45px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}


@media (hover: hover) and (pointer: fine) {
  .scene { cursor: pointer; }
}