:root{
    --bg:#090D13;
    --panel:#0E141D;
    --panel2:#101826;
    --line:rgba(151,167,192,.14);
    --line-strong:rgba(151,167,192,.28);
    --ink:#E9EDF4;
    --dim:#8C98AB;
    --arc:#2F6BFF;
    --arc-hot:#7AA2FF;
    --arc-dim:rgba(47,107,255,.14);
    --display:'Bebas Neue','Arial Narrow',Impact,sans-serif;
    --body:'Inter',-apple-system,'Segoe UI',Roboto,sans-serif;
    --mono:'JetBrains Mono',ui-monospace,'Cascadia Mono',Consolas,monospace;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:auto}
  body{
    background:var(--bg);color:var(--ink);
    font-family:var(--body);font-size:16px;line-height:1.6;
    overflow-x:hidden;-webkit-font-smoothing:antialiased;
  }
  ::selection{background:var(--arc);color:#fff}
  a{color:inherit;text-decoration:none}
  button{font-family:inherit;cursor:pointer}
  :focus-visible{outline:2px solid var(--arc);outline-offset:3px;border-radius:2px}
  .wrap{max-width:1240px;margin:0 auto;padding:0 32px;position:relative;z-index:2}

  /* ---------- НАВИГАЦИЯ ---------- */
  header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    border-bottom:1px solid transparent;transition:background .3s,border-color .3s;
  }
  header.solid{background:rgba(9,13,19,.8);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-color:var(--line)}
  .nav{display:flex;align-items:center;gap:26px;height:66px}
  .logo{display:flex;align-items:center;gap:12px;font-family:var(--display);font-size:24px;letter-spacing:.08em}
  .demo-chip{font-family:var(--mono);font-size:10px;letter-spacing:.18em;color:var(--arc-hot);border:1px solid rgba(47,107,255,.45);padding:3px 8px;border-radius:3px}
  .nav-links{display:flex;gap:26px;margin-left:auto;font-size:13.5px;color:var(--dim);font-weight:500}
  .nav-links a:hover{color:var(--ink)}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:10px;
    font-size:13.5px;font-weight:600;letter-spacing:.02em;
    padding:12px 22px;border-radius:4px;border:1px solid transparent;
    transition:background .2s,border-color .2s,transform .15s;white-space:nowrap;
  }
  .btn-solid{background:var(--arc);color:#fff}
  .btn-solid:hover{background:#4079ff;transform:translateY(-1px)}
  .btn-ghost{border-color:var(--line-strong);color:var(--ink);background:transparent}
  .btn-ghost:hover{border-color:var(--arc);color:var(--arc-hot)}
  .btn-sm{padding:9px 16px;font-size:12.5px}

  /* ---------- СКРОЛЛ-СЦЕНА ---------- */
  #story{position:relative;height:760vh}
  #scene{position:fixed;inset:0;z-index:1}
  #scene canvas{display:block;width:100%;height:100%}
  #story.done #scene,#story.done .ovl,#story.done .rail,#story.done .grain,#story.done .vignette{visibility:hidden}

  .vignette{
    position:fixed;inset:0;z-index:2;pointer-events:none;
    background:radial-gradient(120% 90% at 50% 45%, transparent 55%, rgba(4,6,10,.55) 100%);
  }
  .grain{
    display:none; /* киношное зерно отключено: на светлых панелях читалось как серый шум */
    position:fixed;inset:-60px;z-index:3;pointer-events:none;opacity:.06;
    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='0.9' numOctaves='2'/></filter><rect width='160' height='160' filter='url(%23n)' opacity='0.9'/></svg>");
    animation:grain 1.1s steps(6) infinite;
  }
  @keyframes grain{
    0%{transform:translate(0,0)}20%{transform:translate(-18px,12px)}40%{transform:translate(14px,-20px)}
    60%{transform:translate(-10px,-14px)}80%{transform:translate(16px,10px)}100%{transform:translate(0,0)}
  }

  /* фиксированные текстовые слои-акты */
  .ovl{position:fixed;z-index:5;opacity:0;pointer-events:none;will-change:opacity,transform}
  .ovl .inner{
    background:rgba(9,13,19,.58);
    -webkit-backdrop-filter:blur(16px) saturate(1.15);
    backdrop-filter:blur(16px) saturate(1.15);
    border:1px solid rgba(151,167,192,.15);
    border-radius:20px;
    padding:30px 36px 34px;
    box-shadow:0 18px 50px rgba(0,0,0,.45), inset 0 1px 0 rgba(233,237,244,.05);
  }
  @supports not (backdrop-filter:blur(1px)){
    .ovl .inner{background:rgba(9,13,19,.88)}
  }
  .ovl .eyebrow{
    font-family:var(--mono);font-size:11.5px;letter-spacing:.22em;color:var(--arc-hot);
    text-transform:uppercase;display:flex;align-items:center;gap:12px;margin-bottom:22px;
  }
  .ovl .eyebrow::before{content:"";width:34px;height:1px;background:var(--arc)}
  .ovl h1,.ovl h2{font-family:var(--display);font-weight:400;line-height:.95;letter-spacing:.012em}
  .ovl .sub{color:var(--dim);font-size:16.5px;max-width:480px;margin-top:18px}
  .ovl .sub b{color:var(--ink);font-weight:600}
  .ovl .mono-row{margin-top:22px;font-family:var(--mono);font-size:12px;letter-spacing:.14em;color:var(--dim);display:flex;gap:24px;flex-wrap:wrap}
  .ovl .mono-row span{display:flex;gap:9px;align-items:center}
  .ovl .mono-row i{width:5px;height:5px;background:var(--arc);display:inline-block;border-radius:1px}

  #ovl-hero{left:0;right:0;top:50%;transform:translateY(-50%)}
  #ovl-hero .inner{max-width:740px}
  #ovl-hero h1{font-size:clamp(44px,5.6vw,80px);overflow-wrap:break-word}
  #ovl-hero .accent{color:var(--arc-hot)}
  .scroll-hint{
    position:fixed;bottom:26px;left:50%;transform:translateX(-50%);z-index:6;
    font-family:var(--mono);font-size:10px;letter-spacing:.28em;color:var(--dim);
    display:flex;flex-direction:column;align-items:center;gap:10px;transition:opacity .4s;
  }
  .scroll-hint::after{content:"";width:1px;height:34px;background:linear-gradient(var(--arc),transparent);animation:drop 1.8s ease-in-out infinite}
  @keyframes drop{0%{transform:scaleY(.2);transform-origin:top;opacity:0}35%{transform:scaleY(1);opacity:1}100%{transform:scaleY(1);transform-origin:top;opacity:0}}

  .ovl-card{left:0;right:0}
  .ovl-card .inner{max-width:560px}
  .ovl-card h2{font-size:clamp(38px,4.6vw,62px)}
  #ovl-act2{top:16%}
  #ovl-act3{top:50%;transform:translateY(-50%)}
  #ovl-act3 .inner{margin-left:auto;text-align:right}
  #ovl-act3 .eyebrow{justify-content:flex-end}
  #ovl-act3 .sub{margin-left:auto}
  #ovl-act4{top:14%}
  #ovl-act4 .inner{margin:0 auto;text-align:center;max-width:640px}
  #ovl-act4 .eyebrow{justify-content:center}
  #ovl-act4 .sub{margin:18px auto 0}

  /* акт 5 — цифры */
  #ovl-stats{top:50%;transform:translateY(-50%)}
  .fly-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);backdrop-filter:blur(6px)}
  .fstat{background:rgba(14,20,29,.72);padding:34px 30px;position:relative}
  .fstat::before{content:"";position:absolute;top:0;left:0;width:52px;height:2px;background:var(--arc)}
  .fstat-num{font-family:var(--display);font-size:clamp(44px,4.6vw,64px);line-height:1;display:flex;align-items:baseline;gap:6px}
  .fstat-num small{font-size:.42em;color:var(--arc-hot)}
  .fstat-cap{margin-top:10px;font-size:13px;color:var(--dim);line-height:1.5}

  /* акт 6 — финал */
  #ovl-final{top:50%;transform:translateY(-50%);text-align:center;left:0;right:0}
  #ovl-final h2{font-size:clamp(46px,6vw,86px)}
  #ovl-final .cta-row{display:flex;gap:14px;justify-content:center;margin-top:34px;flex-wrap:wrap}
  #ovl-final .sub{margin:18px auto 0}
  #ovl-final .inner{margin:0 auto;max-width:780px}
  #ovl-stats .inner{margin:0 auto;max-width:1040px}

  /* выноски, привязанные к 3D-точкам */
  .callout{
    position:fixed;z-index:5;opacity:0;pointer-events:none;
    display:flex;align-items:center;gap:0;will-change:transform,opacity;
  }
  .callout .dot{width:9px;height:9px;border-radius:50%;background:var(--arc);box-shadow:0 0 12px rgba(47,107,255,.9);flex:none}
  .callout .lin{width:46px;height:1px;background:linear-gradient(90deg,var(--arc),var(--line-strong));flex:none}
  .callout .txt{
    background:rgba(14,20,29,.85);border:1px solid var(--line-strong);border-left:2px solid var(--arc);
    padding:10px 14px;max-width:240px;backdrop-filter:blur(6px);
  }
  .callout .txt b{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--arc-hot);margin-bottom:4px;text-transform:uppercase}
  .callout .txt span{font-size:12.5px;color:var(--dim);line-height:1.45;display:block}

  /* рейл осей слева */
  .rail{
    position:fixed;left:26px;top:50%;transform:translateY(-50%);z-index:6;
    display:flex;flex-direction:column;gap:0;align-items:flex-start;
  }
  .rail-line{position:absolute;left:16px;top:17px;bottom:17px;width:1px;background:var(--line-strong)}
  .rail-fill{position:absolute;left:16px;top:17px;width:1px;height:0;background:var(--arc)}
  .rail button{
    display:flex;align-items:center;gap:12px;background:none;border:0;padding:9px 0;
    color:var(--dim);position:relative;z-index:1;
  }
  .rail .ax{
    width:33px;height:33px;border-radius:50%;border:1px solid var(--line-strong);
    background:var(--bg);display:flex;align-items:center;justify-content:center;
    font-family:var(--mono);font-size:12px;transition:border-color .25s,color .25s,box-shadow .25s;
  }
  .rail .lbl{font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;opacity:0;transform:translateX(-6px);transition:opacity .25s,transform .25s}
  .rail button:hover .lbl{opacity:1;transform:none}
  .rail button.on .ax{border-color:var(--arc);color:var(--arc-hot);box-shadow:0 0 14px rgba(47,107,255,.45)}
  .rail button.on .lbl{opacity:1;transform:none;color:var(--ink)}

  /* индикатор тоннажа при сборке */
  .tonnage{
    position:fixed;right:32px;bottom:30px;z-index:6;opacity:0;
    font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--dim);text-align:right;
  }
  .tonnage b{display:block;font-family:var(--display);font-size:34px;letter-spacing:.04em;color:var(--ink);line-height:1}
  .tonnage b em{font-style:normal;color:var(--arc-hot);font-size:.5em}

  /* ---------- ОБЫЧНЫЕ СЕКЦИИ ПОСЛЕ СЦЕНЫ ---------- */
  #after{position:relative;z-index:10;background:var(--bg)}
  #after::before{
    content:"";position:absolute;inset:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(124,148,192,.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(124,148,192,.045) 1px, transparent 1px);
    background-size:72px 72px;
  }
  section{padding:110px 0;position:relative}
  .sec-head{display:flex;align-items:center;gap:20px;margin-bottom:56px}
  .axis{
    flex:none;width:34px;height:34px;border:1px solid var(--line-strong);border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    font-family:var(--mono);font-size:12.5px;color:var(--arc-hot);
  }
  .sec-head .rule{flex:none;width:44px;height:1px;background:var(--line-strong)}
  h3.sec-title{font-family:var(--display);font-weight:400;font-size:clamp(34px,4vw,52px);letter-spacing:.02em;line-height:1}
  .sec-note{margin-left:auto;font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--dim);text-transform:uppercase}

  .prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
  .card{background:var(--panel);padding:32px 30px 36px;position:relative;transition:background .25s}
  .card:hover{background:var(--panel2)}
  .card::after{content:"";position:absolute;inset:0;border:1px solid transparent;transition:border-color .25s;pointer-events:none}
  .card:hover::after{border-color:var(--arc)}
  .card-code{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--dim);border:1px solid var(--line);display:inline-block;padding:4px 9px;border-radius:3px;margin-bottom:22px;transition:color .25s,border-color .25s}
  .card:hover .card-code{color:var(--arc-hot);border-color:rgba(47,107,255,.5)}
  .card h4{font-family:var(--display);font-weight:400;font-size:27px;letter-spacing:.03em;margin-bottom:12px}
  .card p{font-size:14px;color:var(--dim)}
  .card p b{color:var(--ink);font-weight:600}
  .card>*{position:relative;z-index:1}
  .card>.card-3d{position:absolute;inset:0;z-index:0;width:100%;height:100%;display:block;opacity:.52;transition:opacity .3s}
  .card:hover>.card-3d{opacity:.8}

  .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:34px;position:relative}
  .steps::before{content:"";position:absolute;top:7px;left:0;right:0;height:1px;background:linear-gradient(90deg,var(--arc) 0%,var(--line-strong) 100%)}
  .step{position:relative;padding-top:34px}
  .step::before{content:"";position:absolute;top:0;left:0;width:15px;height:15px;border-radius:50%;background:var(--bg);border:2px solid var(--arc)}
  .step-num{font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--arc-hot);margin-bottom:10px}
  .step h4{font-size:16.5px;font-weight:600;margin-bottom:9px}
  .step p{font-size:13.5px;color:var(--dim)}

  .cta-panel{
    border:1px solid var(--line);
    background:radial-gradient(700px 300px at 12% -20%, rgba(47,107,255,.18), transparent 60%),var(--panel);
    display:grid;grid-template-columns:1.15fr .85fr;gap:60px;padding:64px;
  }
  .cta-panel .sec-title{font-size:clamp(38px,4.4vw,58px);margin-bottom:22px}
  .cta-list{list-style:none;display:grid;gap:12px;font-size:14px;color:var(--dim)}
  .cta-list li{display:flex;gap:12px;align-items:baseline}
  .cta-list li::before{content:"—";color:var(--arc);flex:none}
  .form{display:grid;gap:14px;align-content:start}
  .field label{display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.18em;color:var(--dim);text-transform:uppercase;margin-bottom:8px}
  .field input,.field textarea{
    width:100%;background:var(--bg);border:1px solid var(--line-strong);border-radius:4px;
    color:var(--ink);font-family:var(--body);font-size:14.5px;padding:13px 15px;transition:border-color .2s;
  }
  .field textarea{min-height:96px;resize:vertical}
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--arc)}
  .form .btn{width:100%;padding:15px}
  .form-note{font-family:var(--mono);font-size:10.5px;letter-spacing:.1em;color:var(--dim)}
  .form-status{display:none;font-size:13.5px;color:var(--arc-hot);border:1px solid rgba(47,107,255,.45);background:var(--arc-dim);border-radius:4px;padding:12px 14px}
  .form-status.show{display:block}

  footer{border-top:1px solid var(--line);padding:44px 0 52px;position:relative;z-index:2}
  .foot{display:flex;gap:30px;align-items:center;flex-wrap:wrap;color:var(--dim);font-size:13px}
  .foot .logo{font-size:20px;color:var(--ink)}
  .foot-links{display:flex;gap:22px;margin-left:auto}
  .foot-links a:hover{color:var(--ink)}
  .foot-note{width:100%;margin-top:18px;font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:#5C6779}

  .rv{opacity:0;transform:translateY(16px);transition:opacity .7s ease,transform .7s ease}
  .rv.in{opacity:1;transform:none}
  .rv-d1{transition-delay:.08s}.rv-d2{transition-delay:.16s}.rv-d3{transition-delay:.24s}.rv-d4{transition-delay:.32s}

  @media (max-width:1024px){
    .nav-links{display:none}
    .rail{display:none}
    .fly-stats{grid-template-columns:repeat(2,1fr)}
    .prod-grid{grid-template-columns:repeat(2,1fr)}
    .steps{grid-template-columns:repeat(2,1fr);gap:40px 30px}
    .steps::before{display:none}
    .cta-panel{grid-template-columns:1fr;padding:44px 36px}
  }
  @media (max-width:680px){
    .wrap{padding:0 20px}
    section{padding:80px 0}
    .callout{display:none}
    .tonnage{right:20px;bottom:22px}
    #ovl-hero h1{font-size:clamp(30px,7.6vw,50px)}
    .ovl-card h2{font-size:clamp(32px,8.5vw,44px)}
    #ovl-final h2{font-size:clamp(36px,10vw,58px)}
    .fly-stats{grid-template-columns:1fr}
    .fstat{padding:22px 22px}
    .prod-grid{grid-template-columns:1fr}
    .steps{grid-template-columns:1fr}
    .sec-note{display:none}
    #ovl-act3 .inner{margin-left:0;text-align:left}
    #ovl-act3 .eyebrow{justify-content:flex-start}
  }
  @media (prefers-reduced-motion:reduce){
    .grain{animation:none}
    .scroll-hint::after{animation:none}
    .rv{opacity:1;transform:none;transition:none}
  }
  /* ================= РЕЖИМ no3d =================
     Мобильные / слабые устройства / нет WebGL / prefers-reduced-motion / Save-Data.
     Сцена не грузится вовсе: постер-герой + акты сцены разворачиваются в поток. */
  .hero-poster,.hero3d-btn{display:none}
  .no3d #scene,.no3d .vignette,.no3d .grain,.no3d .rail,.no3d .tonnage,
  .no3d .scroll-hint,.no3d .callout,.no3d .mtag{display:none!important}
  .no3d #story{height:auto}
  .no3d .hero-poster{
    display:block;position:relative;height:64vh;min-height:420px;overflow:hidden;
    border-bottom:1px solid var(--line);background:var(--bg);
  }
  .no3d .hero-poster::before{
    content:"";position:absolute;inset:-4%;
    background:url("img/hero-poster.jpg") center/cover no-repeat;
    animation:posterKb 26s ease-in-out infinite alternate;
  }
  @keyframes posterKb{from{transform:scale(1)}to{transform:scale(1.09)}}
  .no3d .hero-poster::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(0deg,var(--bg) 0%,transparent 42%),linear-gradient(180deg,rgba(9,13,19,.65),transparent 38%);
  }
  .no3d .hero3d-btn.show{
    display:inline-flex;align-items:center;gap:10px;position:absolute;z-index:3;
    left:50%;bottom:26px;transform:translateX(-50%);
    font-family:var(--body);font-size:13.5px;font-weight:600;letter-spacing:.02em;color:#fff;
    background:rgba(47,107,255,.92);border:1px solid var(--arc-hot);border-radius:6px;
    padding:13px 22px;white-space:nowrap;box-shadow:0 14px 34px -12px rgba(47,107,255,.65);
  }
  .no3d .ovl{
    position:static!important;opacity:1!important;transform:none!important;
    pointer-events:auto;padding:34px 0;will-change:auto;
  }
  .no3d .ovl .inner{margin:0 auto}
  .no3d #ovl-hero{padding-top:44px}
  .no3d #ovl-act3 .inner{margin:0 auto;text-align:left}
  .no3d #ovl-act3 .eyebrow{justify-content:flex-start}
  .no3d #ovl-act3 .sub{margin-left:0}
  @media (prefers-reduced-motion:reduce){ .no3d .hero-poster::before{animation:none} }

  .mtag{
    position:absolute;left:0;top:0;z-index:6;pointer-events:none;
    font-family:var(--mono);font-size:10px;letter-spacing:.14em;
    color:var(--arc-hot);background:rgba(9,13,19,.82);
    border:1px solid var(--arc);border-radius:3px;padding:3px 8px;
    opacity:0;white-space:nowrap;text-shadow:0 0 8px rgba(47,107,255,.5);
  }

/* ── Карточки продукции — теперь ссылки на посадочные (2026-08-05) ── */
.card--link{display:block;text-decoration:none;color:inherit;cursor:pointer}
.card--link:hover{border-color:rgba(47,107,255,.55);transform:translateY(-3px)}
.card--link h4,.card--link p{color:inherit}
/* canvas крутится, но клик проходит на карточку */
.card--link .card-3d{pointer-events:none}
.card-more{display:inline-block;margin-top:10px;font-size:13px;letter-spacing:.06em;color:#2F6BFF;opacity:0;transform:translateX(-4px);transition:.25s}
.card--link:hover .card-more{opacity:1;transform:none}