/* ==========================================================================
   СК Политех — site-v2
   Тёмная промышленная тема. Фотографий нет: страницу несут типографика,
   структура и движение. Значения движения — из motion-design/EFFECTS.md.
   ========================================================================== */

:root{
  /* --- грунт: тёплый near-black, не чистый чёрный --- */
  --void:#0B0C0A;
  --steel:#131512;
  --steel-2:#1A1D18;
  --line:#272B23;
  --line-soft:#1E211B;

  /* --- текст --- */
  --concrete:#E9E7E0;
  --concrete-2:#B9BCB0;
  --muted:#868B7C;

  /* --- один сигнальный цвет: каска / кран --- */
  --signal:#F0B429;
  --signal-dim:rgba(240,180,41,.14);
  --signal-line:rgba(240,180,41,.28);

  /* --- кривые (EFFECTS.md) --- */
  --ease-out:cubic-bezier(.23,1,.32,1);
  --ease-in-out:cubic-bezier(.77,0,.175,1);

  --gut:clamp(20px,5vw,72px);
  --maxw:1240px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0; background:var(--void); color:var(--concrete);
  font-family:"IBM Plex Sans",system-ui,-apple-system,sans-serif;
  font-size:17px; line-height:1.6; -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3{margin:0;font-family:"IBM Plex Sans Condensed","IBM Plex Sans",sans-serif;font-weight:700;letter-spacing:-.02em;line-height:1.05;text-wrap:balance}
p{margin:0}
ol,ul{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:2px}

.skip{position:absolute;left:-9999px;top:0;background:var(--signal);color:var(--void);padding:10px 16px;z-index:100}
.skip:focus{left:8px;top:8px}

.mono{font-family:"IBM Plex Mono",ui-monospace,monospace}
.label{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--signal);margin-bottom:18px}
.lede{color:var(--concrete-2);max-width:62ch;font-size:17.5px;margin-top:20px}

/* ==================== КНОПКИ ==================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.08em;text-transform:uppercase;
  padding:15px 26px;border:1px solid var(--line);border-radius:2px;cursor:pointer;background:transparent;color:var(--concrete);
  transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .12s var(--ease-out);
}
.btn-sm{padding:10px 16px;font-size:11.5px}
.btn-primary{background:var(--signal);border-color:var(--signal);color:#14140C;font-weight:500}
.btn-ghost{border-color:var(--line)}
@media (hover:hover) and (pointer:fine){
  .btn-primary:hover{background:#FFC845;border-color:#FFC845}
  .btn-ghost:hover{border-color:var(--signal);color:var(--signal)}
}
.btn:active{transform:translateY(1px)}

/* ==================== ШАПКА ==================== */
.hdr{
  position:fixed;inset:0 0 auto 0;z-index:50;
  display:flex;align-items:center;gap:24px;
  padding:14px var(--gut);
  border-bottom:1px solid transparent;
  transition:background-color .3s ease,border-color .3s ease,backdrop-filter .3s ease;
}
.hdr.scrolled{background:rgba(11,12,10,.78);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom-color:var(--line-soft)}
.brand{display:flex;align-items:center;gap:10px;font-family:"IBM Plex Sans Condensed",sans-serif;font-weight:700;font-size:18px;letter-spacing:-.01em}
.brand-mark{width:13px;height:13px;background:var(--signal);flex:0 0 auto;
  clip-path:polygon(0 0,100% 0,100% 62%,62% 100%,0 100%)}
.nav{display:flex;gap:26px;margin-left:auto;font-family:"IBM Plex Mono",monospace;font-size:12.5px;letter-spacing:.05em;color:var(--concrete-2)}
.nav a{position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:var(--signal);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease-out)}
@media (hover:hover) and (pointer:fine){.nav a:hover{color:var(--concrete)}.nav a:hover::after{transform:scaleX(1)}}
.lang-switcher{display:flex;gap:4px}
.lang-btn{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.04em;
  padding:5px 8px;border:1px solid var(--line);border-radius:2px;background:transparent;
  color:var(--muted);cursor:pointer;transition:color .18s ease,border-color .18s ease,background-color .18s ease}
.lang-btn.active{color:var(--signal);border-color:var(--signal-line);background:var(--signal-dim)}
@media (hover:hover) and (pointer:fine){.lang-btn:not(.active):hover{color:var(--concrete);border-color:var(--concrete-2)}}
@media (max-width:860px){.nav{display:none}.hdr .lang-switcher{margin-left:auto}}

/* ==================== HERO ==================== */
.hero{position:relative;padding:clamp(130px,17vh,190px) var(--gut) 0;min-height:640px;overflow:hidden}
.hero-in{position:relative;z-index:2;max-width:var(--maxw);margin:0 auto}

/* фото стройплощадки — под сеткой/зерном, затемнено скримом под текст */
.hero-photo{
  position:absolute;inset:0;z-index:-2;
  background-size:cover;background-position:center 38%;
  filter:saturate(.9) contrast(1.05);
}
.hero-scrim{
  position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(180deg, rgba(11,12,10,.55) 0%, rgba(11,12,10,.72) 55%, rgba(11,12,10,.94) 100%),
    linear-gradient(90deg, rgba(11,12,10,.55) 0%, rgba(11,12,10,.15) 42%, rgba(11,12,10,.1) 100%);
}

/* сетка чертежа: дрейф по ШАГУ ПЛИТКИ (64px) — иначе рывок на стыке */
.hero-grid{
  position:absolute;inset:-120px;z-index:0;opacity:.5;
  background:
    radial-gradient(circle at 12% 22%, var(--signal-dim) 0 1px, transparent 1.4px) 0 0/64px 64px,
    linear-gradient(rgba(240,180,41,.045) 1px, transparent 1px) 0 0/64px 64px,
    linear-gradient(90deg, rgba(240,180,41,.045) 1px, transparent 1px) 0 0/64px 64px;
  animation:drift 80s linear infinite;
  -webkit-mask-image:radial-gradient(ellipse 80% 65% at 50% 30%,#000 30%,transparent 100%);
  mask-image:radial-gradient(ellipse 80% 65% at 50% 30%,#000 30%,transparent 100%);
}
@keyframes drift{to{transform:translate(-64px,-64px)}}

/* зерно: шаговая анимация, не плавная */
.grain{
  position:absolute;inset:-60px;z-index:1;pointer-events:none;opacity:.22;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/></filter><rect width='160' height='160' filter='url(%23n)'/></svg>");
  animation:noise .4s steps(1,end) infinite;
}
/* ВАЖНО: сдвиги — ФИКСИРОВАННЫЕ пиксели, пропорциональные тайлу текстуры (160px),
   НЕ проценты от размера блока. .grain — большой div (inset:-60px на весь hero),
   и translate(-6%,...) от НЕГО — это минус ~90px, а не минус ~10px от тайла: на
   каждом шаге узор дёргался на десятки-сотни пикселей, особенно заметно по краям
   элемента. Баг найден по жалобе Dzianis 01.10.2026 (скриншот: «дёргается, по краям»). */
@keyframes noise{
  0%{transform:translate(0,0)}12.5%{transform:translate(-9px,-6px)}25%{transform:translate(-14px,4px)}
  37.5%{transform:translate(6px,-11px)}50%{transform:translate(-4px,12px)}62.5%{transform:translate(11px,3px)}
  75%{transform:translate(-12px,-9px)}87.5%{transform:translate(3px,7px)}}

.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.2em;text-transform:uppercase;color:var(--signal)}
.h-title{font-size:clamp(42px,7.4vw,98px);margin:26px 0 0;letter-spacing:-.035em;max-width:15ch}
.h-title .word{display:inline-block;white-space:nowrap}
.h-title .ch{display:inline-block}
.h-sub{color:var(--concrete-2);max-width:56ch;margin-top:28px;font-size:clamp(17px,2vw,20px)}
.h-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px}

/* бегущая строка конвейера */
.pipe{position:relative;z-index:2;margin-top:clamp(56px,9vh,100px);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft);padding:16px 0}
.marquee{--gap:2.6rem;display:flex;gap:var(--gap);overflow:hidden;user-select:none;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 6%,#000 94%,transparent)}
.marquee__track{display:flex;gap:var(--gap);flex:0 0 auto;
  font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.18em;color:var(--muted);white-space:nowrap;
  animation:marqueeX 34s linear infinite}
.marquee__track .sep{color:var(--line)}
.marquee__track .lit{color:var(--signal)}
@keyframes marqueeX{to{transform:translateX(calc(-100% - var(--gap)))}}
@media (hover:hover) and (pointer:fine){.marquee:hover .marquee__track{animation-play-state:paused}}

/* ==================== ЧЕРТЁЖ · CTA (op.al-style: один экран, минимум, акцент на фото) ==================== */
.blueprint{position:relative;max-width:none;overflow:hidden;
  padding:clamp(90px,14vh,150px) var(--gut);display:flex;align-items:center;justify-content:center;
  min-height:620px;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.bp-photo{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center;
  filter:saturate(.85) contrast(1.05)}
.bp-scrim{position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(ellipse 70% 60% at 50% 38%, rgba(11,12,10,.35) 0%, rgba(11,12,10,.72) 68%, rgba(11,12,10,.93) 100%),
    linear-gradient(180deg, rgba(11,12,10,.55) 0%, rgba(11,12,10,.3) 30%, rgba(11,12,10,.55) 70%, rgba(11,12,10,.88) 100%)}
.bp-in{position:relative;z-index:2;width:100%;min-width:0;max-width:760px;text-align:center;display:flex;flex-direction:column;align-items:center}
.bp-title{font-size:clamp(28px,4.6vw,52px);letter-spacing:-.03em;margin:18px 0 0;text-wrap:balance}
.bp-in .lede{margin:22px 0 0;max-width:56ch}

.bp-cta-block{position:relative;width:100%;min-width:0;margin-top:40px;display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.bp-glow{position:absolute;left:50%;bottom:-10px;width:min(620px,94%);height:120px;
  transform:translateX(-50%);pointer-events:none;
  background:radial-gradient(ellipse 55% 100% at 50% 100%, rgba(240,180,41,.65) 0%, rgba(240,180,41,.28) 48%, transparent 78%);
  filter:blur(16px);animation:bpPulse 9s ease-in-out infinite}
@keyframes bpPulse{0%,100%{opacity:.8;transform:translateX(-50%) scale(1)}50%{opacity:1;transform:translateX(-50%) scale(1.1)}}

/* ==================== ЦИФРЫ ==================== */
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line-soft);
  border-bottom:1px solid var(--line-soft);margin-top:0}
.stat{background:var(--void);padding:clamp(30px,5vw,54px) var(--gut)}
.stat .n{display:block;font-family:"IBM Plex Sans Condensed",sans-serif;font-weight:700;
  font-size:clamp(44px,7vw,84px);line-height:1;color:var(--signal);letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.stat .l{display:block;margin-top:14px;color:var(--concrete-2);font-size:15px;max-width:30ch}
@media (max-width:820px){.stats{grid-template-columns:1fr}}

/* ==================== ОБЩЕЕ ДЛЯ СЕКЦИЙ ==================== */
.sec{padding:clamp(72px,12vh,140px) var(--gut);max-width:var(--maxw);margin:0 auto}
.sec-head h2{font-size:clamp(28px,4.4vw,50px);max-width:26ch}

/* ==================== ПРОБЛЕМА · FLIP ==================== */
.problem{position:relative;overflow:hidden;max-width:none;margin:0}
.problem-photo{position:absolute;inset:0;z-index:-2;background-size:cover;background-position:center;
  filter:saturate(.9) contrast(1.05)}
.problem-scrim{position:absolute;inset:0;z-index:-1;
  background:
    linear-gradient(100deg, rgba(11,12,10,.88) 0%, rgba(11,12,10,.78) 38%, rgba(11,12,10,.55) 70%, rgba(11,12,10,.82) 100%),
    linear-gradient(180deg, rgba(11,12,10,.3) 0%, rgba(11,12,10,.5) 60%, rgba(11,12,10,.85) 100%)}
.problem-inner{position:relative;z-index:1;max-width:var(--maxw);margin:0 auto}
.flip-shell{margin-top:clamp(40px,6vw,64px)}
.flip-box{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.flip-box.merged{grid-template-columns:1fr;gap:0}
.fnode{
  border:1px solid var(--line);background:var(--steel);border-radius:2px;
  padding:26px 18px;min-height:110px;display:flex;align-items:flex-end;
  font-family:"IBM Plex Mono",monospace;font-size:12.5px;letter-spacing:.12em;color:var(--concrete-2);
  transition:border-color .3s ease,background-color .3s ease,color .3s ease;
}
.flip-box.merged .fnode{
  min-height:0;padding:14px 18px;align-items:center;border-radius:0;
  border-color:var(--signal-line);background:var(--signal-dim);color:var(--signal);
  border-bottom-width:0;
}
.flip-box.merged .fnode:first-child{border-radius:2px 2px 0 0}
.flip-box.merged .fnode:last-child{border-bottom-width:1px;border-radius:0 0 2px 2px}
.flip-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px 24px;margin-top:22px}
.flip-cap{font-family:"IBM Plex Mono",monospace;font-size:13px;letter-spacing:.06em;color:var(--muted);flex:1 1 320px}
.flip-cap[data-cap-merged]{color:var(--signal);letter-spacing:.14em}
.flip-cap.is-hidden{display:none}
@media (max-width:700px){.flip-box{grid-template-columns:repeat(2,1fr)}}

/* ==================== ПОЛНЫЙ ЦИКЛ ==================== */
.cycle-body{position:relative;margin-top:clamp(40px,6vw,64px);padding-left:46px}
.rail{position:absolute;left:14px;top:8px;bottom:8px;width:1px;background:var(--line)}
.rail-fill{position:absolute;left:0;top:0;width:1px;height:0;background:var(--signal);transform-origin:top}
.steps{display:flex;flex-direction:column;gap:2px}
.step{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:start;
  padding:24px 0;border-top:1px solid var(--line-soft);position:relative}
.step:first-child{border-top:0}
.step::before{content:"";position:absolute;left:-38px;top:32px;width:9px;height:9px;border-radius:50%;
  background:var(--void);border:1px solid var(--line);transition:background-color .3s ease,border-color .3s ease}
.step.on::before{background:var(--signal);border-color:var(--signal)}
.step .num{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--muted);padding-top:6px;transition:color .3s ease}
.step.on .num{color:var(--signal)}
.step h3{font-size:clamp(20px,2.6vw,27px);font-weight:600}
.step p{color:var(--concrete-2);margin-top:8px;max-width:58ch;font-size:16px}
@media (max-width:640px){.cycle-body{padding-left:34px}.rail{left:8px}.step::before{left:-30px}.step{grid-template-columns:1fr;gap:6px}}

/* ==================== GREAT STONE ==================== */
.gs{position:relative;overflow:hidden;max-width:none;background:var(--steel);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
/* вадзяны знак: сілуэт 15-га корпуса БНТУ («Карабель»), той жа, што на штампе кампаніі.
   mask, не background-image — колер і празрыстасць кіруюцца тут, незалежна ад самога SVG. */
.gs-ship{
  position:absolute;right:-2%;top:clamp(64px,11vh,110px);
  width:48%;max-width:560px;aspect-ratio:900/300;
  background:var(--signal);opacity:.1;pointer-events:none;z-index:0;
  -webkit-mask-image:url('img/ship-silhouette.svg');mask-image:url('img/ship-silhouette.svg');
  -webkit-mask-size:contain;mask-size:contain;
  -webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;
  -webkit-mask-position:right center;mask-position:right center;
}
.gs-inner{position:relative;z-index:1}
.gs-inner{max-width:var(--maxw);margin:0 auto}
.reveal-clip{clip-path:inset(0 0 0 0)}
.gs .tiles{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:clamp(36px,5vw,56px)}
.tile{background:var(--steel-2);border:1px solid var(--line);border-radius:2px;padding:22px;
  transform-style:preserve-3d;transition:transform .18s var(--ease-out),border-color .25s ease}
.tile h3{font-size:16px;font-weight:600;font-family:"IBM Plex Mono",monospace;letter-spacing:.02em;color:var(--signal)}
.tile p{margin-top:10px;color:var(--concrete-2);font-size:14.5px;line-height:1.55}
@media (hover:hover) and (pointer:fine){.tile:hover{border-color:var(--signal-line)}}
@media (max-width:1000px){.gs .tiles{grid-template-columns:repeat(2,1fr)}}
@media (max-width:560px){.gs .tiles{grid-template-columns:1fr}}
.gs-note{margin:28px 0 30px;color:var(--muted);font-size:14px;max-width:70ch}

/* ==================== КЕЙСЫ ==================== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:clamp(36px,5vw,56px)}
.card{border:1px solid var(--line);border-radius:2px;overflow:hidden;background:var(--steel)}
.card-vis{height:190px;position:relative;overflow:hidden;background:var(--steel-2)}
.card-vis{background-size:cover;background-position:center;transition:transform .5s var(--ease-out)}
.card-vis::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,12,10,0) 55%,rgba(11,12,10,.55) 100%)}
@media (hover:hover) and (pointer:fine){.card:hover .card-vis{transform:scale(1.04)}}
.card h3{padding:18px 18px 0;font-size:20px;font-weight:600}
.spec{margin:14px 0 0;padding:0 18px 18px;display:flex;flex-direction:column;gap:7px}
.spec>div{display:flex;gap:10px;border-top:1px solid var(--line-soft);padding-top:7px;
  font-family:"IBM Plex Mono",monospace;font-size:12px}
.spec dt{color:var(--muted);min-width:76px}
.spec dd{margin:0;color:var(--concrete-2)}
@media (max-width:900px){.cards{grid-template-columns:1fr}}

/* ==================== ПОЧЕМУ МЫ ==================== */
.whylist{margin-top:clamp(36px,5vw,56px);display:flex;flex-direction:column}
.whylist li{display:grid;grid-template-columns:auto 1fr;gap:22px;padding:22px 0;border-top:1px solid var(--line-soft)}
.whylist .num{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--signal)}
.whylist p{font-size:clamp(17px,2.2vw,22px);color:var(--concrete);max-width:52ch}

/* ==================== ФОРМА ==================== */
.lead-sec{max-width:none;background:var(--steel);border-top:1px solid var(--line-soft)}
.lead-grid{max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,68px);align-items:start}
@media (max-width:900px){.lead-grid{grid-template-columns:1fr}}
.promises{margin-top:26px;display:flex;flex-direction:column;gap:10px}
.promises li{padding-left:22px;position:relative;color:var(--concrete-2);font-size:15.5px}
.promises li::before{content:"";position:absolute;left:0;top:10px;width:9px;height:1px;background:var(--signal)}

.lead{display:flex;flex-direction:column;gap:16px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:560px){.two{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.req{color:var(--signal)}
.field input,.field textarea{
  width:100%;background:var(--void);border:1px solid var(--line);border-radius:2px;
  color:var(--concrete);font:inherit;font-size:16px;padding:13px 14px;
  transition:border-color .18s ease,background-color .18s ease}
.field textarea{resize:vertical;min-height:84px}
.field input::placeholder,.field textarea::placeholder{color:#5F6458}
.field input:focus,.field textarea:focus{border-color:var(--signal);outline:none}
.drop{border:1px dashed var(--line);border-radius:2px;padding:22px 16px;text-align:center;cursor:pointer;
  color:var(--muted);font-family:"IBM Plex Mono",monospace;font-size:12px;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease}
@media (hover:hover) and (pointer:fine){.drop:hover{border-color:var(--signal-line);color:var(--concrete-2)}}
.drop.over{border-color:var(--signal);color:var(--signal);background:var(--signal-dim)}
.files{display:flex;flex-direction:column;gap:6px}
.files .f{display:flex;justify-content:space-between;align-items:center;gap:12px;
  border:1px solid var(--line-soft);border-radius:2px;padding:8px 12px;
  font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--concrete-2)}
.files .f button{background:none;border:0;color:var(--muted);cursor:pointer;font:inherit;text-decoration:underline}
.toast{min-height:0;font-family:"IBM Plex Mono",monospace;font-size:12.5px}
.toast.ok{color:var(--signal)}
.toast.err{color:#FF8A6B}
.consent{color:var(--muted);font-size:13px;max-width:52ch}

/* ==================== ПОДВАЛ ==================== */
.ftr{border-top:1px solid var(--line-soft);padding:44px var(--gut)}
.ftr-in{max-width:var(--maxw);margin:0 auto;display:flex;flex-direction:column;gap:12px}
.ftr-note{color:var(--muted);font-size:14px}
.ftr-note.mono{font-family:"IBM Plex Mono",monospace;font-size:11.5px;letter-spacing:.14em;color:var(--line);overflow-x:auto;white-space:nowrap}

/* ==========================================================================
   СОСТОЯНИЯ ДВИЖЕНИЯ
   Покой = ПОКАЗАНО. Прячет только класс, который ставит JS.
   Не выполнится скрипт — страница останется читаемой.
   ========================================================================== */
.js [data-reveal].out>*{opacity:0;transform:translateY(40px)}
.js [data-reveal]>*{transition:opacity .8s var(--ease-out),transform .8s var(--ease-out)}
/* шаг на БЛОК — 0.15s (EFFECTS.md: 0.02-0.04 на букву, 0.15-0.2 на блок).
   Индекс проставляет JS, поэтому работает при любом числе детей. */
.js [data-reveal].out>*{transition-delay:calc(var(--i,0) * 90ms)}

/* вход героя — оркестрованная последовательность, играется один раз */
.js .hero [data-seq]{opacity:0;transform:translateY(24px);
  animation:seqIn .8s var(--ease-out) forwards;
  animation-delay:calc(var(--d,0) * 1ms)}
@keyframes seqIn{to{opacity:1;transform:none}}
.js .h-title .ch{animation:charRise .8s var(--ease-out) backwards;
  animation-delay:calc(220ms + var(--i) * 26ms)}
@keyframes charRise{from{transform:translateY(64px);opacity:0}}
.js .reveal-clip.clip-out{animation:clipOpen .9s var(--ease-in-out) backwards}
@keyframes clipOpen{from{clip-path:inset(0 100% 0 0)}to{clip-path:inset(0 0 0 0)}}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hero-grid,.grain,.marquee__track,.bp-glow{animation:none}
  .js .hero [data-seq],.js .h-title .ch,.js .reveal-clip.clip-out{animation:none;opacity:1;transform:none;clip-path:none}
  .js [data-reveal].out>*{opacity:1;transform:none}
  .js [data-reveal]>*{transition:none}
  .tile,.btn{transition:none}
  .marquee{overflow-x:auto}
}