/* ============================================================
   S1 · HERO — орбы моделей + 3D-куб SOVAKOD
   ============================================================ */
.hero { padding: 0; height: 100vh; height: 100svh; }
.hero__pin {
  position: relative; height: 100%;
  display: flex; flex-direction: column; align-items: center;
  justify-content: flex-start; padding-top: max(11vh, 88px);
  overflow: hidden;
}
.hero__kicker { color: var(--amber); margin-bottom: 22px; }

.hero__title {
  font-family: var(--display); font-weight: 700; text-align: center;
  font-size: clamp(26px, 4.4vw, 60px); line-height: 1.14;
  letter-spacing: -0.01em; z-index: 6; position: relative;
}
.hero__line { display: block; overflow: hidden; }
.hero__line > span { display: inline-block; will-change: transform; }
.hero__title em { font-style: normal; color: var(--amber); }

/* сцена */
.hero__stage {
  position: absolute; inset: 0; z-index: 5;
  pointer-events: none;
}

/* --------- протагонист: сквозной куб SOVAKOD (CSS 3D) --------- */
#protagonist {
  position: fixed; inset: 0; z-index: 42;
  pointer-events: none;
}
.cube-wrap {
  --size: clamp(120px, 15vw, 200px);
  position: absolute; left: 0; top: 0;
  width: var(--size); height: var(--size);
  perspective: 1200px;
  will-change: transform;
}
.cube-pulse { position: absolute; inset: 0; transform-style: preserve-3d; }
.cube {
  position: absolute; inset: 0; transform-style: preserve-3d;
  will-change: transform;
}
.cube__face {
  position: absolute; inset: 0;
  border: 1px solid rgba(255,163,0,.35);
  background: rgba(18,18,20,.55);
  backface-visibility: visible;
  display: grid; place-items: center;
  box-shadow: inset 0 0 40px rgba(255,163,0,.05);
}
.cube__face img { width: 62%; height: 62%; border-radius: 18%; }
.cube__face--front  { transform: translateZ(calc(var(--size)/2)); background: rgba(18,18,20,.9); }
.cube__face--back   { transform: rotateY(180deg) translateZ(calc(var(--size)/2)); }
.cube__face--left   { transform: rotateY(-90deg) translateZ(calc(var(--size)/2)); }
.cube__face--right  { transform: rotateY(90deg) translateZ(calc(var(--size)/2)); }
.cube__face--top    { transform: rotateX(90deg) translateZ(calc(var(--size)/2)); }
.cube__face--bottom { transform: rotateX(-90deg) translateZ(calc(var(--size)/2)); }

.cube__glow {
  position: absolute; inset: -55%;
  background: radial-gradient(closest-side, rgba(255,163,0,.22), transparent 70%);
  opacity: .5; will-change: opacity, transform;
}
.cube__shadow {
  position: absolute; left: -22%; right: -22%; bottom: -34%;
  height: 22%; border-radius: 50%;
  background: radial-gradient(closest-side, rgba(0,0,0,.6), transparent 70%),
              radial-gradient(closest-side, rgba(255,163,0,.12), transparent 60%);
  transform: translateZ(0);
}
.cube__counter {
  position: absolute; left: 50%; bottom: -46px; transform: translateX(-50%);
  color: var(--dim); font-size: 11px; white-space: nowrap;
}
.cube__counter.is-full { color: var(--amber); }

/* --------- орбы моделей --------- */
.orb {
  position: absolute; left: 50%; top: 58%;
  width: 0; height: 0;
  will-change: transform;
}
.orb__ball {
  --d: clamp(64px, 7.4vw, 108px);
  width: var(--d); height: var(--d);
  margin: calc(var(--d) / -2) 0 0 calc(var(--d) / -2);
  border-radius: 50%;
  display: grid; place-items: center;
  background:
    radial-gradient(circle at 32% 28%, rgba(255,255,255,.14), transparent 42%),
    radial-gradient(circle at 68% 78%, rgba(255,163,0,.08), transparent 50%),
    rgba(20,20,23,.88);
  border: 1px solid var(--line);
  box-shadow: 0 18px 44px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.08);
  will-change: transform;
}
.orb__ball img { width: 44%; height: 44%; }
.orb[data-orb="openai"] .orb__ball img { filter: invert(1); }

.orb__chips {
  position: absolute; left: 50%; top: 50%;
  display: flex; gap: 6px; flex-direction: column; align-items: flex-start;
  transform: translate(calc(clamp(64px,7.4vw,108px)/2 + 12px), -50%);
}
.chip {
  font-size: 10.5px; letter-spacing: .1em; white-space: nowrap;
  color: var(--muted); background: rgba(11,11,13,.82);
  border: 1px solid var(--line); border-radius: 100px;
  padding: 5px 12px;
  backface-visibility: hidden;
}
.orb[data-orb="claude"] .chip { border-color: rgba(217,119,87,.4); }
.orb[data-orb="gemini"] .chip, .orb[data-orb="glm"] .chip { transform-origin: left center; }

/* --------- вспышка поглощения --------- */
.absorb-ring {
  position: absolute; left: 50%; top: 58%;
  width: 12px; height: 12px; margin: -6px 0 0 -6px;
  border: 2px solid var(--amber); border-radius: 50%;
  opacity: 0; pointer-events: none;
}

/* --------- скролл-хинт --------- */
.hero__hint {
  position: absolute; bottom: 26px; left: 50%; transform: translateX(-50%);
  display: flex; align-items: center; gap: 12px;
  color: var(--dim); font-size: 11px; z-index: 6;
}
.hero__mouse {
  width: 20px; height: 32px; border: 1px solid var(--line);
  border-radius: 12px; display: grid; justify-items: center; padding-top: 6px;
}
.hero__mouse i {
  width: 3px; height: 7px; border-radius: 3px; background: var(--amber);
  animation: wheel 1.6s ease-in-out infinite;
}
@keyframes wheel { 0%{transform:translateY(0);opacity:1} 70%{transform:translateY(9px);opacity:0} 100%{opacity:0} }

/* letterbox — transform-only, без height-анимаций */
.lb {
  position: fixed; left: 0; right: 0; height: 6vh; z-index: 60;
  background: #000; pointer-events: none;
  transform: scaleY(0); will-change: transform;
}
.lb--top { top: 0; transform-origin: center top; }
.lb--bot { bottom: 0; transform-origin: center bottom; }

/* гигантское слово-призрак за секцией */
.ghost-word {
  position: absolute; top: 6%; left: 50%; transform: translateX(-50%);
  font-family: var(--display); font-weight: 800;
  font-size: clamp(90px, 22vw, 340px); line-height: 1;
  color: transparent; -webkit-text-stroke: 1px rgba(242,239,232,.05);
  pointer-events: none; user-select: none; white-space: nowrap;
  z-index: 0; will-change: transform;
}

@media (max-width: 900px) {
  .orb__chips { display: none; }
  .hero__title { padding: 0 16px; }
  .ghost-word { font-size: 34vw; }
}