/* ============================================================
   ОСНОВА — промышленные полы
   Тёмная сцена, стеклянные панели, золотой металлик.
   ============================================================ */

:root{
  --bg:#101012;
  --bg-2:#151517;
  --panel:rgba(255,255,255,.038);
  --panel-2:rgba(255,255,255,.06);
  --line:rgba(255,255,255,.085);
  --line-2:rgba(255,255,255,.16);

  --ink:#EFECE6;
  --ink-70:rgba(239,236,230,.68);
  --ink-45:rgba(239,236,230,.44);
  --ink-25:rgba(239,236,230,.24);

  --gold:#D9B978;
  --gold-lt:#F6E6C2;
  --gold-dk:#6E5227;
  --metal:linear-gradient(104deg,#6E5227 0%,#D9B978 22%,#F8ECD2 40%,#C7A461 58%,#F2DEB4 76%,#77592C 100%);
  --metal-soft:linear-gradient(104deg,rgba(110,82,39,.9),rgba(217,185,120,.95),rgba(248,236,210,1),rgba(199,164,97,.95),rgba(119,89,44,.9));

  --shadow:0 24px 60px rgba(0,0,0,.55),0 2px 8px rgba(0,0,0,.4);
  --shadow-lift:0 34px 80px rgba(0,0,0,.62),0 0 0 1px rgba(217,185,120,.22);

  --display:"Geologica","Golos Text",system-ui,sans-serif;
  --body:"Golos Text","Segoe UI",system-ui,sans-serif;
  --mono:"Martian Mono","JetBrains Mono",ui-monospace,monospace;

  --wrap:1300px;
  --pad:clamp(18px,4.4vw,64px);
  --r:18px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font:400 16.5px/1.62 var(--body);
  -webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative;
}
/* тонкая плёнка шума — она и даёт ощущение материала, а не заливки */
body::before{
  content:"";position:fixed;inset:0;z-index:1;pointer-events:none;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}
main,header,footer{position:relative;z-index:2}

h1,h2,h3{margin:0;font-family:var(--display);font-weight:600;letter-spacing:-.028em;line-height:1.06}
p{margin:0}ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
svg{display:block;max-width:100%}
button{font:inherit;color:inherit}
:focus-visible{outline:1px solid var(--gold);outline-offset:3px}

.skip{position:absolute;left:-999px;z-index:99;background:var(--gold);color:#111;padding:10px 16px;border-radius:99px}
.skip:focus{left:10px;top:10px}

.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad)}
.mono{font-family:var(--mono);font-weight:400;font-size:10.5px;letter-spacing:.06em;text-transform:uppercase}

/* золото по тексту */
.au{
  background:var(--metal);-webkit-background-clip:text;background-clip:text;
  color:transparent;background-size:220% 100%;animation:sheen 9s linear infinite;
}
@keyframes sheen{to{background-position:220% 0}}

.eyebrow{color:var(--gold);margin-bottom:18px}
.h2{font-size:clamp(27px,3.4vw,46px)}
.lede{max-width:58ch;color:var(--ink-70);font-size:clamp(15.5px,1.2vw,17px)}
.head{margin-bottom:clamp(34px,4.4vw,60px)}
.head .lede{margin-top:18px}
.head--center{text-align:center}
.head--center .lede{margin-inline:auto}
.head--row{display:grid;grid-template-columns:1fr .9fr;gap:30px;align-items:end}
.head--row .lede{margin-top:0}
@media (max-width:900px){.head--row{grid-template-columns:1fr;align-items:start}}

/* кнопки-пилюли */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:15px 30px;border:1px solid transparent;border-radius:999px;
  font:500 14.5px/1 var(--body);cursor:pointer;position:relative;overflow:hidden;
  transition:transform .25s cubic-bezier(.2,.9,.3,1),box-shadow .25s,border-color .25s,color .25s;
}
.btn--mark{background:var(--metal);background-size:200% 100%;color:#20180A;font-weight:600;box-shadow:0 10px 30px rgba(217,185,120,.18)}
.btn--mark:hover{background-position:100% 0;transform:translateY(-2px);box-shadow:0 16px 40px rgba(217,185,120,.3)}
.btn--ghost{border-color:var(--line-2);color:var(--ink)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-lt);transform:translateY(-2px)}
.btn--sm{padding:11px 20px;font-size:13.5px}
.btn--w{width:100%}

/* стеклянная панель */
.glass{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:var(--shadow);
}

/* ---------- шапка ---------- */
.top{position:sticky;top:0;z-index:60;background:rgba(16,16,18,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line)}
.top__in{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad);min-height:72px;display:flex;align-items:center;gap:32px}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand__m{width:26px;height:26px;flex:none;color:var(--ink)}
.brand__n{font-family:var(--display);font-weight:600;font-size:16px;letter-spacing:.08em}
.nav{display:flex;gap:26px;margin-left:auto;font-size:14.5px;color:var(--ink-70)}
.nav a{position:relative;padding:6px 0;transition:color .2s}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:1px;background:var(--metal);transition:right .3s}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{right:0}
.top__cta{display:flex;align-items:center;gap:14px}
.top__tel{font-size:12px;text-transform:none;letter-spacing:.02em;white-space:nowrap;color:var(--ink)}
.top__tel:empty{display:none}
.top__line{height:1px;background:transparent}
.top__line i{display:block;height:100%;width:0;background:var(--metal)}
@media (max-width:1120px){.nav{display:none}}

/* ---------- герой ---------- */
.hero{position:relative;background:var(--bg);overflow:hidden}
.hero::after{ /* световое пятно над сценой */
  content:"";position:absolute;left:50%;top:-10%;width:120vw;height:80vh;transform:translateX(-50%);
  background:radial-gradient(50% 50% at 50% 50%,rgba(217,185,120,.13),transparent 70%);pointer-events:none;
}
.hero__scene{height:auto}
.hero__sticky{position:relative;min-height:calc(100vh - 72px);padding:72px 0 96px;display:flex;align-items:center;overflow:hidden}
.hero__grid{
  max-width:var(--wrap);margin:0 auto;padding-inline:var(--pad);width:100%;position:relative;z-index:3;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,60px);align-items:center;
}
.hero__h1{font-size:clamp(34px,4.6vw,68px);letter-spacing:-.038em;font-weight:600}
.hero__h1 .line{display:block;padding-bottom:.06em}
.hero__h1 .line > span{display:block}
.hero__lede{margin-top:24px;max-width:46ch;color:var(--ink-70)}
.hero__act{margin-top:30px;display:flex;gap:12px;flex-wrap:wrap}
.hero__hint{margin-top:30px;color:var(--ink-25);text-transform:none;letter-spacing:.04em}
.ready .hero__lede{animation:fadeUp .9s ease .5s both}
.ready .hero__act{animation:fadeUp .9s ease .62s both}
.ready .hero__hint{animation:fadeUp .9s ease .8s both}
.ready .hero__art{animation:fadeUp 1.1s ease .3s both}
@keyframes fadeUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

/* полированный пол рисуется в canvas и реагирует на курсор */
.floorc{position:absolute;inset:0;width:100%;height:100%;z-index:1;display:block}

.hero__art{margin:0;min-width:0;position:relative}
.cut svg{width:100%;height:auto;overflow:visible}
/* отражение разреза в полу */
.cut__refl{
  height:120px;overflow:hidden;opacity:.2;filter:blur(1.4px);margin-top:-1px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 78%);
}
.cut__refl svg{width:100%;height:auto;transform:scaleY(-1);transform-origin:top center}
.cut__refl text,.cut__refl line{display:none}
@media (max-width:980px){.cut__refl{height:70px}}

@media (max-width:980px){
  .hero__scene{height:auto}
  .hero__sticky{position:static;height:auto;padding:44px 0 60px}
  .hero__grid{grid-template-columns:1fr}
  .hero__art{order:-1;margin-bottom:12px}
  .hero__hint{display:none}
  .floor{height:38%}
}

/* ---------- факты ---------- */
.facts{padding:0 0 clamp(50px,6vw,86px);position:relative;z-index:3}
.facts__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.fact{padding:26px 24px 24px;border-radius:var(--r);background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(14px);transition:transform .3s cubic-bezier(.2,.9,.3,1),border-color .3s,box-shadow .3s}
.fact:hover{transform:translateY(-4px);border-color:rgba(217,185,120,.32);box-shadow:var(--shadow)}
.fact__n{font-family:var(--display);font-weight:600;font-size:clamp(34px,3.6vw,50px);line-height:1;letter-spacing:-.04em}
.fact__l{margin:12px 0 10px;color:var(--gold)}
.fact__t{font-size:13.5px;line-height:1.5;color:var(--ink-45)}
@media (max-width:900px){.facts__grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.facts__grid{grid-template-columns:1fr}}

/* ---------- секции ---------- */
section{position:relative}
.systems,.select,.base,.process,.clients,.docs,.objects,.faq,.lead{padding:clamp(60px,7.5vw,110px) 0}
.select,.faq{background:
  radial-gradient(70% 60% at 15% 0%,rgba(217,185,120,.07),transparent 60%),
  var(--bg-2)}
.select::before,.faq::before{content:"";position:absolute;inset:0 0 auto;height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}

/* ---------- системы ---------- */
.sys{display:grid;gap:14px}
.scard{
  display:grid;grid-template-columns:minmax(0,190px) minmax(0,1fr) minmax(0,290px);
  gap:clamp(18px,2.6vw,40px);padding:clamp(20px,2.4vw,32px);align-items:start;
  border-radius:var(--r);background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(14px);
  transition:transform .35s cubic-bezier(.2,.9,.3,1),border-color .35s,box-shadow .35s,background .35s;
}
.scard:hover{transform:translateY(-4px);background:var(--panel-2);border-color:rgba(217,185,120,.3);box-shadow:var(--shadow-lift)}
.scard__art{align-self:center;border-radius:12px;overflow:hidden;box-shadow:0 10px 26px rgba(0,0,0,.45)}
.scard__i{font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--gold)}
.scard__t{font-size:clamp(19px,1.9vw,26px);margin:8px 0 12px}
.scard__x{color:var(--ink-70);font-size:15px;max-width:52ch}
.scard__no{margin-top:13px;font-size:14px;color:var(--ink-45);padding-left:14px;border-left:1px solid;border-image:var(--metal) 1}
.scard__no b{font-weight:600;color:var(--ink)}
.scard__sp{display:grid;gap:8px}
.scard__sp li{display:flex;justify-content:space-between;gap:14px;border-bottom:1px solid var(--line);padding-bottom:8px}
.scard__sp span{font-family:var(--mono);font-size:9.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-45)}
.scard__sp b{font-weight:500;font-size:13.5px;text-align:right}
@media (max-width:1020px){
  .scard{grid-template-columns:140px minmax(0,1fr);grid-template-areas:"art body" "sp sp"}
  .scard__art{grid-area:art}.scard__b{grid-area:body}.scard__sp{grid-area:sp;margin-top:4px}
}
@media (max-width:620px){
  .scard{grid-template-columns:1fr;grid-template-areas:"art" "body" "sp"}
  .scard__art{max-width:220px}
}

/* ---------- подбор ---------- */
.sel__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,440px);gap:clamp(24px,3.4vw,54px);align-items:start}
@media (max-width:1020px){.sel__grid{grid-template-columns:1fr}}
.sel__q{padding:clamp(20px,2.4vw,32px);border-radius:var(--r);background:var(--panel);border:1px solid var(--line);backdrop-filter:blur(14px)}
.q{border:0;margin:0 0 26px;padding:0}
.q:last-child{margin-bottom:0}
.q__t{color:var(--ink-45);padding:0 0 12px}
.opts{display:flex;flex-wrap:wrap;gap:8px}
.opt{
  padding:11px 18px;background:rgba(255,255,255,.03);color:var(--ink-70);
  border:1px solid var(--line);border-radius:999px;cursor:pointer;font-size:14px;
  transition:all .22s cubic-bezier(.2,.9,.3,1);
}
.opt:hover{border-color:var(--line-2);color:var(--ink);transform:translateY(-1px)}
.opt.is-on{background:var(--metal);color:#20180A;border-color:transparent;font-weight:600;box-shadow:0 8px 22px rgba(217,185,120,.2)}
.opts--multi .opt.is-on::before{content:"✓ "}

.sel__out{position:sticky;top:100px;border-radius:var(--r);overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.025));
  border:1px solid var(--line);backdrop-filter:blur(16px);box-shadow:var(--shadow);
  padding:clamp(22px,2.4vw,30px)}
@media (max-width:1020px){.sel__out{position:static}}
.res__c{color:var(--gold)}
.res__t{font-size:clamp(21px,2.1vw,28px);margin:10px 0 6px}
.res__s{color:var(--ink-45);font-size:14px}
.res__cut{margin:20px 0 16px;border-radius:12px;overflow:hidden;box-shadow:0 12px 30px rgba(0,0,0,.5)}
.res__cut svg{width:100%;height:auto}
.res__sp{display:grid;gap:7px;margin-bottom:16px}
.res__sp li{display:flex;justify-content:space-between;gap:12px;font-size:13px;color:var(--ink-45);border-bottom:1px solid var(--line);padding-bottom:7px}
.res__sp b{font-weight:500;color:var(--ink);text-align:right}
.res__w{font-size:13.5px;color:var(--ink-70);padding-left:14px;border-left:1px solid;border-image:var(--metal) 1;margin-bottom:14px}
.res__p{margin-top:12px;color:var(--ink-25);text-transform:none;letter-spacing:.03em}

/* ---------- основание ---------- */
.base__grid{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(0,.88fr);gap:clamp(28px,4.4vw,68px);align-items:start}
@media (max-width:960px){.base__grid{grid-template-columns:1fr}}
.checks{margin-top:32px;display:grid;gap:10px}
.checks li{display:grid;grid-template-columns:190px 170px 1fr;gap:18px;padding:18px 20px;align-items:baseline;
  border-radius:14px;background:var(--panel);border:1px solid var(--line);transition:border-color .3s,transform .3s}
.checks li:hover{border-color:rgba(217,185,120,.28);transform:translateX(4px)}
.checks__n{color:var(--ink-45)}
.checks__v{font-family:var(--display);font-weight:500;font-size:18px;letter-spacing:-.02em;color:var(--gold-lt)}
.checks__d{color:var(--ink-45);font-size:14px;line-height:1.5}
@media (max-width:860px){.checks li{grid-template-columns:1fr;gap:5px}}
.base__art{margin:0;position:sticky;top:104px}
.base__art .cut{border-radius:14px;overflow:hidden;box-shadow:var(--shadow)}
.base__art figcaption{margin-top:14px;color:var(--ink-45);text-transform:none;letter-spacing:.03em}
@media (max-width:960px){.base__art{position:static}}

/* ---------- процесс ---------- */
.process{background:var(--bg-2)}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;counter-reset:st}
@media (max-width:940px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.steps{grid-template-columns:1fr}}
.pstep{position:relative;padding:26px 24px 30px;border-radius:var(--r);background:var(--panel);border:1px solid var(--line);
  backdrop-filter:blur(12px);counter-increment:st;overflow:hidden;
  transition:transform .35s cubic-bezier(.2,.9,.3,1),border-color .35s,box-shadow .35s}
.pstep::before{
  content:counter(st,decimal-leading-zero);position:absolute;right:18px;top:10px;
  font-family:var(--display);font-weight:600;font-size:56px;line-height:1;
  background:var(--metal);-webkit-background-clip:text;background-clip:text;color:transparent;opacity:.22;
}
.pstep:hover{transform:translateY(-4px);border-color:rgba(217,185,120,.3);box-shadow:var(--shadow-lift)}
.pstep__d{color:var(--gold);margin-bottom:14px}
.pstep__t{font-size:19px;margin-bottom:9px}
.pstep__x{color:var(--ink-45);font-size:14.5px;line-height:1.5}

/* ---------- клиенты ---------- */
.clients{padding-block:clamp(40px,5vw,70px);border-block:1px solid var(--line)}
.mq{overflow:hidden;position:relative;-webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.mq__t{display:flex;gap:14px;width:max-content;animation:mq 34s linear infinite}
.clients:hover .mq__t{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}
.logo{
  width:190px;height:86px;flex:none;border-radius:12px;border:1px dashed var(--line-2);
  display:grid;place-items:center;color:var(--ink-25);background:rgba(255,255,255,.02);
}
.logo b{font-family:var(--mono);font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;font-weight:400}

/* ---------- документы ---------- */
.docs__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media (max-width:960px){.docs__grid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.docs__grid{grid-template-columns:1fr}}
.doc{border-radius:var(--r);background:var(--panel);border:1px solid var(--line);padding:18px;transition:transform .3s,border-color .3s}
.doc:hover{transform:translateY(-4px);border-color:rgba(217,185,120,.3)}
.doc__ph{aspect-ratio:3/4;border-radius:10px;border:1px dashed var(--line-2);display:grid;place-items:center;
  background:linear-gradient(160deg,rgba(255,255,255,.05),rgba(255,255,255,.01));position:relative;overflow:hidden}
.doc__ph img{width:100%;height:100%;object-fit:cover}
.doc__ph::after{content:attr(data-ph);position:absolute;font-family:var(--mono);font-size:9.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-25)}
.doc__ph:has(img)::after{content:none}
.doc__t{margin-top:14px;font-family:var(--display);font-weight:500;font-size:15px;letter-spacing:-.01em}
.doc__s{margin-top:5px;color:var(--ink-45);font-size:13px}

/* ---------- объекты ---------- */
.objs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:960px){.objs{grid-template-columns:1fr 1fr}}
@media (max-width:620px){.objs{grid-template-columns:1fr}}
.obj{border-radius:var(--r);overflow:hidden;background:var(--panel);border:1px solid var(--line);
  transition:transform .35s cubic-bezier(.2,.9,.3,1),border-color .35s,box-shadow .35s}
.obj:hover{transform:translateY(-5px);border-color:rgba(217,185,120,.3);box-shadow:var(--shadow-lift)}
.obj__ph{position:relative;aspect-ratio:4/3;display:grid;place-items:center;overflow:hidden;
  background:linear-gradient(160deg,rgba(255,255,255,.06),rgba(255,255,255,.015))}
.obj__ph img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.9,.3,1)}
.obj:hover .obj__ph img{transform:scale(1.05)}
.obj__ph::after{content:attr(data-ph);position:absolute;font-family:var(--mono);font-size:10px;letter-spacing:.05em;text-transform:uppercase;color:var(--ink-25)}
.obj__ph:has(img)::after{content:none}
.obj__b{padding:18px 20px 22px}
.obj__t{font-family:var(--display);font-weight:500;font-size:17px;letter-spacing:-.02em}
.obj__m{display:flex;flex-wrap:wrap;gap:6px 14px;margin-top:9px}
.obj__m span{font-family:var(--mono);font-size:9.5px;letter-spacing:.05em;text-transform:uppercase;color:var(--gold);opacity:.8}
.objs__note{margin-top:22px;color:var(--ink-25);text-transform:none;letter-spacing:.03em}

/* ---------- вопросы ---------- */
.faq__grid{display:grid;grid-template-columns:minmax(0,.72fr) minmax(0,1.28fr);gap:clamp(26px,3.6vw,66px);align-items:start}
@media (max-width:920px){.faq__grid{grid-template-columns:1fr}}
.faq .head{margin-bottom:0}
.qs{display:grid;gap:10px}
.qa{border-radius:14px;background:var(--panel);border:1px solid var(--line);overflow:hidden;transition:border-color .3s,background .3s}
.qa[open]{border-color:rgba(217,185,120,.28);background:var(--panel-2)}
.qa summary{padding:20px 52px 20px 22px;cursor:pointer;font-size:16.5px;font-weight:500;list-style:none;position:relative}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{
  content:"";position:absolute;right:22px;top:50%;width:9px;height:9px;
  border-right:1.5px solid var(--gold);border-bottom:1.5px solid var(--gold);
  transform:translateY(-70%) rotate(45deg);transition:transform .3s;
}
.qa[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.qa p{padding:0 26px 22px;color:var(--ink-70);font-size:15px;max-width:66ch}

/* ---------- заявка ---------- */
.lead__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:clamp(28px,4.4vw,68px);align-items:start}
@media (max-width:920px){.lead__grid{grid-template-columns:1fr}}
.lead__a{margin-top:24px;color:var(--ink-25);text-transform:none;letter-spacing:.03em}
.form{display:grid;gap:14px;padding:clamp(22px,2.6vw,34px);border-radius:var(--r);
  background:linear-gradient(160deg,rgba(255,255,255,.07),rgba(255,255,255,.02));
  border:1px solid var(--line);backdrop-filter:blur(16px);box-shadow:var(--shadow)}
.f{display:grid;gap:7px}
.f__n{font-family:var(--mono);font-size:9.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-45)}
.f input,.f textarea{
  width:100%;padding:14px 16px;background:rgba(0,0,0,.28);border:1px solid var(--line);
  border-radius:12px;font:400 15.5px/1.4 var(--body);color:var(--ink);transition:border-color .25s,background .25s;
}
.f input::placeholder,.f textarea::placeholder{color:var(--ink-25)}
.f input:focus,.f textarea:focus{outline:none;border-color:rgba(217,185,120,.5);background:rgba(0,0,0,.4)}
.f textarea{resize:vertical;min-height:88px}
.ch{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--ink-45);cursor:pointer}
.ch input{margin-top:2px;width:16px;height:16px;accent-color:var(--gold)}
.form__s{min-height:18px;color:#E0A26A;text-transform:none;letter-spacing:.03em}
.form__s.ok{color:var(--gold-lt)}

/* ---------- подвал ---------- */
.foot{background:#0B0B0C;border-top:1px solid var(--line);padding:clamp(48px,5.6vw,80px) 0 24px;color:var(--ink-70)}
.foot__grid{display:grid;grid-template-columns:1.3fr .7fr 1fr;gap:clamp(26px,3.6vw,56px)}
@media (max-width:840px){.foot__grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.foot__grid{grid-template-columns:1fr}}
.foot__l{margin-top:15px;max-width:34ch;color:var(--ink-45);font-size:14.5px}
.foot__c{color:var(--ink-25);margin-bottom:14px}
.foot__nav{display:grid;gap:9px;align-content:start;font-size:14.5px}
.foot__nav a{color:var(--ink-70)}
.foot__nav a:hover{color:var(--gold)}
.foot__cont{display:grid;gap:12px;align-content:start}
.cs{display:grid;gap:3px}
.cs__c{color:var(--ink-25);font-size:9.5px}
.cs__v{font-size:14.5px;color:var(--ink)}
.cs.empty .cs__v{display:block;min-height:20px;border-bottom:1px dashed var(--line-2);pointer-events:none}
.cs.empty .cs__v::after{content:"—";color:var(--ink-25)}
.foot__b{margin-top:clamp(34px,4.4vw,58px);padding-top:18px;border-top:1px solid var(--line);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--ink-25);text-transform:none;font-size:10px}

/* ---------- разрез ---------- */
.cut .lay{transform:translateY(calc(var(--p,0) * var(--s) * -1px));will-change:transform;transition:transform .7s cubic-bezier(.16,1,.3,1)}
.hero__art{cursor:default}
.hero__art:hover #heroCut,.hero__art:focus-within #heroCut{--p:1!important}
.hero__art:hover #heroRefl,.hero__art:focus-within #heroRefl{--p:1!important}
#baseCut{--p:.6}
#heroCut .lead{opacity:calc(var(--p,0) * .6)}
#heroCut .cut__mm{opacity:calc(.1 + var(--p,0) * .6)}
.cut__name{font-family:var(--mono);font-size:11px;letter-spacing:.03em;fill:var(--ink)}
.cut__mm{font-family:var(--mono);font-size:11px;letter-spacing:.03em;fill:var(--gold);opacity:.75}
.cut__rule{stroke:var(--gold);opacity:.4;stroke-width:1}

/* ---------- появление ---------- */
[data-rv]{opacity:0;transform:translateY(26px);transition:opacity .9s cubic-bezier(.16,1,.3,1),transform .9s cubic-bezier(.16,1,.3,1)}
[data-rv].in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  [data-rv]{opacity:1;transform:none;transition:none}
  .hero__h1 .line span,.hero__lede,.hero__act,.hero__hint,.hero__art{animation:none;transform:none;opacity:1}
  .au,.floor__sweep,.mq__t{animation:none}
  .btn,.opt,.nav a::after,.scard,.pstep,.obj,.fact,.checks li{transition:none}
  .pre{display:none}
  .cur{display:none}
  .w i{transform:none!important;animation:none!important}
}

/* ============================================================
   Сцена загрузки
   ============================================================ */
.pre{
  position:fixed;inset:0;z-index:200;background:#08080A;display:grid;place-content:center;
  gap:18px;justify-items:center;
  animation:preFail 0s linear 3.5s forwards;   /* страховка, если скрипт не отработал */
}
.pre.done{opacity:0;visibility:hidden;transform:translateY(-2%);transition:opacity .7s ease,transform .9s cubic-bezier(.7,0,.2,1),visibility 0s .9s}
@keyframes preFail{to{opacity:0;visibility:hidden}}
.pre__in{display:grid;justify-items:center;gap:14px}
.pre__m{width:34px;height:34px;color:var(--ink);animation:preFloat 2.6s ease-in-out infinite}
@keyframes preFloat{50%{transform:translateY(-6px)}}
.pre__n{font-family:var(--display);font-weight:600;font-size:15px;letter-spacing:.42em;padding-left:.42em;color:var(--ink)}
.pre__c{color:var(--gold);font-size:11px;letter-spacing:.1em}
.pre__bar{position:absolute;left:0;right:0;bottom:0;height:1px;background:rgba(255,255,255,.08)}
.pre__bar i{display:block;height:100%;width:0;background:var(--metal)}

/* курсор */
.cur{position:fixed;left:0;top:0;z-index:190;pointer-events:none;mix-blend-mode:difference}
.cur i{position:absolute;border-radius:50%;transform:translate(-50%,-50%)}
.cur__d{width:6px;height:6px;background:#fff}
.cur__r{width:34px;height:34px;border:1px solid rgba(255,255,255,.55);transition:width .3s,height .3s,border-color .3s}
.cur.on .cur__r{width:56px;height:56px;border-color:#fff}
@media (pointer:coarse),(max-width:900px){.cur{display:none}}

/* появление слов в заголовках */
.w{display:inline-block;overflow:hidden;vertical-align:top}
.w i{display:inline-block;font-style:normal;transform:translateY(110%);transition:transform .9s cubic-bezier(.16,1,.3,1)}
.hero__h1 .w{padding-bottom:.04em}
.ready .hero__h1 .w i,.sw.in .w i{transform:none}

/* горизонтальная лента систем */
.hpin{position:relative}
.hsticky{position:sticky;top:72px;height:calc(100vh - 72px);min-height:520px;display:flex;align-items:center;overflow:hidden}
.htrack{display:flex;gap:16px;padding-inline:var(--pad);will-change:transform}
.hhint{color:var(--ink-25);margin-top:26px;text-transform:none;letter-spacing:.05em}
.htrack .scard{
  width:min(72vw,470px);flex:none;grid-template-columns:1fr;grid-template-areas:"art" "body" "sp";
  align-content:start;gap:18px;padding:24px;
}
.htrack .scard__art{max-width:230px;align-self:start}
@media (max-width:1020px){
  .hpin{height:auto!important}
  .hsticky{position:static;height:auto;display:block;overflow:visible}
  .htrack{flex-direction:column;transform:none!important;width:auto}
  .htrack .scard{width:auto}
  .hhint{display:none}
}

/* мелочи, по которым видно уровень */
::selection{background:rgba(217,185,120,.85);color:#14100A}
html{scrollbar-color:rgba(217,185,120,.4) transparent;scrollbar-width:thin}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0B0C}
::-webkit-scrollbar-thumb{background:rgba(217,185,120,.32);border-radius:99px;border:3px solid #0B0B0C}
::-webkit-scrollbar-thumb:hover{background:rgba(217,185,120,.5)}

/* блик, который бежит за курсором внутри кнопки */
.btn--ghost::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .3s;
  background:radial-gradient(140px 140px at var(--mx,50%) var(--my,50%),rgba(217,185,120,.22),transparent 70%);
}
.btn--ghost:hover::before{opacity:1}

/* лёгкий наклон карточек за курсором */
.tilt{transform-style:preserve-3d}