/* ===========================================================
   Скайэнерго · Робототехника — дизайн-система
   Тёмная кинематографичная тема, синий акцент. Системные шрифты (RU-safe).
   =========================================================== */
:root{
  --blue:#1667c8; --blue-2:#0b4fa0; --blue-deep:#062f63; --blue-glow:#3d8bff;
  --ink:#0a0e15; --ink-2:#0f1622; --panel:#131c2b; --panel-2:#1a2637;
  --line:rgba(255,255,255,.09); --line-2:rgba(255,255,255,.16);
  --text:#eef3fb; --muted:#9db0c8; --muted-2:#6f819b;
  --white:#fff;
  --maxw:1200px; --radius:16px; --radius-s:10px;
  --shadow:0 24px 60px -20px rgba(0,0,0,.6);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PT Sans", sans-serif;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font); background:var(--ink); color:var(--text);
  line-height:1.6; -webkit-font-smoothing:antialiased; overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
section{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--blue-glow)}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--blue)}
h1,h2,h3{line-height:1.08;letter-spacing:-.02em;font-weight:800}
h1{font-size:clamp(34px,6vw,68px)}
h2{font-size:clamp(28px,4vw,44px)}
h3{font-size:clamp(19px,2.4vw,24px)}
.lead{font-size:clamp(17px,2.1vw,21px);color:var(--muted);max-width:60ch}
.section-pad{padding:clamp(64px,9vw,120px) 0}
.center{text-align:center}
.mx-auto{margin-left:auto;margin-right:auto}
.grad-text{background:linear-gradient(100deg,#fff 30%,var(--blue-glow));-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:15px;
  padding:15px 26px;border-radius:999px;border:1px solid transparent;cursor:pointer;
  transition:transform .25s var(--ease),background .25s,box-shadow .25s;white-space:nowrap}
.btn svg{width:18px;height:18px}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(180deg,var(--blue),var(--blue-2));color:#fff;
  box-shadow:0 12px 30px -10px rgba(22,103,200,.7)}
.btn-primary:hover{box-shadow:0 18px 40px -10px rgba(22,103,200,.9)}
.btn-ghost{background:rgba(255,255,255,.05);border-color:var(--line-2);color:#fff;backdrop-filter:blur(8px)}
.btn-ghost:hover{background:rgba(255,255,255,.1)}
.btn-lg{padding:18px 34px;font-size:16px}

/* ---------- Header ---------- */
.site-header{position:fixed;top:0;left:0;right:0;z-index:100;transition:background .3s,border-color .3s;
  border-bottom:1px solid transparent}
.site-header.scrolled{background:rgba(8,12,20,.82);backdrop-filter:saturate(160%) blur(14px);border-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;letter-spacing:-.01em;font-size:19px}
.brand .logo{width:40px;height:40px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--blue),var(--blue-deep));
  display:grid;place-items:center;box-shadow:0 8px 20px -8px rgba(22,103,200,.8);position:relative;overflow:hidden}
.brand .logo svg{width:24px;height:24px}
.brand small{display:block;font-size:11px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--blue-glow);margin-top:1px}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:9px 14px;border-radius:10px;font-size:15px;font-weight:600;color:var(--muted);transition:color .2s,background .2s}
.nav-links a:hover,.nav-links a.active{color:#fff;background:rgba(255,255,255,.06)}
.nav-cta{display:flex;align-items:center;gap:10px}
.nav-phone{font-weight:800;font-size:15px;color:#fff;display:flex;align-items:center;gap:8px}
.nav-phone svg{width:16px;height:16px;color:var(--blue-glow)}
.burger{display:none;width:44px;height:44px;border-radius:11px;background:rgba(255,255,255,.06);border:1px solid var(--line-2);cursor:pointer;place-items:center}
.burger span{display:block;width:20px;height:2px;background:#fff;position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:20px;height:2px;background:#fff;transition:.3s}
.burger span::before{top:-6px}.burger span::after{top:6px}
body.menu-open .burger span{background:transparent}
body.menu-open .burger span::before{top:0;transform:rotate(45deg)}
body.menu-open .burger span::after{top:0;transform:rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding-top:74px;overflow:hidden}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(6,10,18,.95) 0%,rgba(6,10,18,.72) 42%,rgba(6,10,18,.35) 100%),
             linear-gradient(0deg,var(--ink) 2%,transparent 40%)}
.hero-inner{position:relative;z-index:2;padding:60px 0}
.hero h1{max-width:16ch;margin:18px 0}
.hero .lead{margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:38px;margin-top:54px;flex-wrap:wrap}
.hero-stats .n{font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.02em}
.hero-stats .l{font-size:13.5px;color:var(--muted);margin-top:2px}
.scroll-cue{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);z-index:2;color:var(--muted-2);font-size:12px;letter-spacing:.1em;text-transform:uppercase;display:flex;flex-direction:column;align-items:center;gap:8px}
.scroll-cue .line{width:1px;height:34px;background:linear-gradient(var(--blue-glow),transparent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:.3}50%{opacity:1}}

/* ---------- Cards / grid ---------- */
.grid{display:grid;gap:22px}
.g-2{grid-template-columns:repeat(2,1fr)}
.g-3{grid-template-columns:repeat(3,1fr)}
.g-4{grid-template-columns:repeat(4,1fr)}
.card{background:linear-gradient(180deg,var(--panel),var(--ink-2));border:1px solid var(--line);
  border-radius:var(--radius);padding:28px;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s;position:relative;overflow:hidden}
.card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow)}
.card .ico{width:52px;height:52px;border-radius:13px;display:grid;place-items:center;margin-bottom:18px;
  background:linear-gradient(135deg,rgba(22,103,200,.25),rgba(22,103,200,.05));border:1px solid rgba(61,139,255,.25);color:var(--blue-glow)}
.card .ico svg{width:26px;height:26px}
.card h3{margin-bottom:8px}
.card p{color:var(--muted);font-size:15px}

/* Направления (big split cards) */
.dir-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:440px;display:flex;align-items:flex-end;
  border:1px solid var(--line);transition:transform .4s var(--ease)}
.dir-card:hover{transform:translateY(-5px)}
.dir-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.dir-card:hover img{transform:scale(1.06)}
.dir-card::after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(6,10,18,.96) 8%,rgba(6,10,18,.35) 60%,transparent)}
.dir-card .body{position:relative;z-index:2;padding:34px}
.dir-card .body h3{font-size:clamp(24px,3vw,32px);margin-bottom:10px}
.dir-card .body p{color:var(--muted);margin-bottom:18px;max-width:42ch}
.dir-card .arrow{display:inline-flex;align-items:center;gap:10px;font-weight:700;color:var(--blue-glow)}
.dir-card .arrow svg{width:20px;height:20px;transition:transform .3s}
.dir-card:hover .arrow svg{transform:translateX(6px)}

/* Модели экзо */
.model-card{background:linear-gradient(180deg,var(--panel),var(--ink-2));border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .3s var(--ease),border-color .3s,box-shadow .3s}
.model-card:hover{transform:translateY(-4px);border-color:var(--line-2);box-shadow:var(--shadow)}
.model-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:#000}
.model-media img{width:100%;height:100%;object-fit:cover}
.badge{display:inline-block;padding:5px 12px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.03em}
.badge-blue{background:rgba(22,103,200,.18);color:var(--blue-glow);border:1px solid rgba(61,139,255,.3)}
.badge-amber{background:rgba(230,150,0,.15);color:#ffbf47;border:1px solid rgba(255,191,71,.3)}
.model-media .badge{position:absolute;top:14px;left:14px;z-index:2}
.model-body{padding:24px;display:flex;flex-direction:column;flex:1}
.model-body .code{font-size:13px;font-weight:800;letter-spacing:.1em;color:var(--blue-glow)}
.model-body h3{margin:4px 0 10px}
.spec{list-style:none;margin:14px 0 20px;display:grid;gap:9px}
.spec li{display:flex;justify-content:space-between;gap:14px;font-size:14.5px;padding-bottom:9px;border-bottom:1px solid var(--line)}
.spec li b{color:#fff;font-weight:700;text-align:right}
.spec li span{color:var(--muted)}
.model-actions{margin-top:auto;display:flex;gap:10px;flex-wrap:wrap}

/* Feature rows */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:clamp(30px,5vw,70px);align-items:center}
.feature-row.rev .media{order:2}
.feature-media{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);position:relative;aspect-ratio:4/3;background:#000}
.feature-media img,.feature-media video{width:100%;height:100%;object-fit:cover}
.checklist{list-style:none;display:grid;gap:14px;margin-top:22px}
.checklist li{display:flex;gap:14px;font-size:16px}
.checklist .ck{flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:rgba(22,103,200,.18);border:1px solid rgba(61,139,255,.3);display:grid;place-items:center;color:var(--blue-glow)}
.checklist .ck svg{width:15px;height:15px}

/* Industry chips */
.ind-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.ind{background:linear-gradient(180deg,var(--panel),var(--ink-2));border:1px solid var(--line);border-radius:var(--radius-s);padding:22px;display:flex;gap:16px;align-items:center;transition:border-color .3s,transform .3s}
.ind:hover{border-color:var(--line-2);transform:translateY(-3px)}
.ind .ico{width:44px;height:44px;flex:0 0 auto;border-radius:11px;display:grid;place-items:center;background:rgba(22,103,200,.15);color:var(--blue-glow)}
.ind .ico svg{width:24px;height:24px}
.ind b{display:block;font-size:16px}
.ind span{font-size:13.5px;color:var(--muted)}

/* CTA band */
.cta{position:relative;overflow:hidden;border-radius:clamp(18px,3vw,28px);padding:clamp(40px,6vw,72px);
  background:linear-gradient(120deg,var(--blue-deep),var(--ink-2));border:1px solid var(--line-2);text-align:center}
.cta::before{content:"";position:absolute;inset:0;background:radial-gradient(600px 300px at 50% -10%,rgba(61,139,255,.35),transparent)}
.cta>*{position:relative;z-index:2}
.cta h2{margin-bottom:12px}
.cta .lead{margin:0 auto 28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Video lightbox */
.play-btn{position:absolute;inset:0;display:grid;place-items:center;z-index:3;cursor:pointer;background:rgba(6,10,18,.25);transition:background .3s}
.play-btn:hover{background:rgba(6,10,18,.1)}
.play-btn .circle{width:74px;height:74px;border-radius:50%;background:rgba(22,103,200,.92);display:grid;place-items:center;box-shadow:0 14px 40px -8px rgba(22,103,200,.9);transition:transform .3s}
.play-btn:hover .circle{transform:scale(1.08)}
.play-btn svg{width:30px;height:30px;color:#fff;margin-left:4px}
.lb{position:fixed;inset:0;z-index:1000;background:rgba(4,7,12,.92);backdrop-filter:blur(6px);display:none;place-items:center;padding:24px}
.lb.open{display:grid}
.lb video{max-width:min(440px,92vw);max-height:88vh;border-radius:14px;box-shadow:0 30px 80px -20px #000}
.lb-close{position:absolute;top:22px;right:24px;width:48px;height:48px;border-radius:50%;background:rgba(255,255,255,.1);border:1px solid var(--line-2);color:#fff;font-size:22px;cursor:pointer}

/* Footer */
.site-footer{border-top:1px solid var(--line);background:var(--ink-2);padding:64px 0 30px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.site-footer .brand{margin-bottom:16px}
.foot-about{color:var(--muted);font-size:14.5px;max-width:34ch}
.foot-col h4{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted-2);margin-bottom:16px}
.foot-col a,.foot-col p{display:block;color:var(--muted);font-size:15px;margin-bottom:11px;transition:color .2s}
.foot-col a:hover{color:#fff}
.foot-contact b{color:#fff;font-size:18px;font-weight:800}
.foot-bottom{border-top:1px solid var(--line);margin-top:44px;padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--muted-2);font-size:13.5px}

/* Page hero (inner pages) */
.page-hero{position:relative;padding:calc(74px + clamp(50px,8vw,90px)) 0 clamp(40px,6vw,70px);overflow:hidden;border-bottom:1px solid var(--line)}
.page-hero::before{content:"";position:absolute;inset:0;z-index:0;background:radial-gradient(800px 400px at 80% -20%,rgba(22,103,200,.28),transparent),linear-gradient(180deg,var(--ink-2),var(--ink))}
.page-hero .wrap{position:relative;z-index:2}
.page-hero h1{max-width:18ch;margin:16px 0 14px}
.crumbs{font-size:13.5px;color:var(--muted-2)}
.crumbs a:hover{color:#fff}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}

/* ---------- Responsive ---------- */
@media(max-width:960px){
  .g-4{grid-template-columns:repeat(2,1fr)}
  .g-3{grid-template-columns:1fr}
  .ind-grid{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:30px}
  .feature-row.rev .media{order:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links,.nav-phone{display:none}
  .burger{display:grid}
  .mobile-menu{position:fixed;inset:74px 0 0;background:rgba(8,12,20,.98);backdrop-filter:blur(14px);z-index:99;
    transform:translateX(100%);transition:transform .35s var(--ease);padding:30px 24px;display:flex;flex-direction:column;gap:6px}
  body.menu-open .mobile-menu{transform:none}
  .mobile-menu a{padding:16px;font-size:19px;font-weight:700;border-bottom:1px solid var(--line)}
  .mobile-menu .btn{margin-top:20px;justify-content:center}
}
@media(min-width:961px){.mobile-menu{display:none}}
@media(max-width:600px){
  .g-2,.dir-grid{grid-template-columns:1fr!important}
  .ind-grid{grid-template-columns:1fr}
  .hero-stats{gap:24px}
  .wrap{padding:0 18px}
}

/* ---------- FAQ accordion ---------- */
.faq-theme{margin:44px 0 14px}
.faq-theme .eyebrow{margin-bottom:10px}
.faq-theme p{color:var(--muted);margin-top:6px;max-width:60ch}
.qa{background:linear-gradient(180deg,var(--panel),var(--ink-2));border:1px solid var(--line);border-radius:var(--radius-s);margin:12px 0;overflow:hidden;transition:border-color .2s}
.qa[open]{border-color:rgba(61,139,255,.4)}
.qa>summary{list-style:none;cursor:pointer;padding:20px 24px;font-weight:700;font-size:17px;display:flex;gap:16px;align-items:flex-start}
.qa>summary::-webkit-details-marker{display:none}
.qa>summary .qn{font-size:13px;font-weight:800;color:var(--blue-glow);padding-top:3px;min-width:38px;letter-spacing:.05em}
.qa>summary::after{content:"+";margin-left:auto;font-size:24px;color:var(--muted);line-height:1;font-weight:400}
.qa[open]>summary::after{content:"–";color:var(--blue-glow)}
.qa .ans{padding:0 24px 22px 78px;color:var(--muted);line-height:1.65}
.qa .ans p{margin:0 0 12px}
.qa .ans ul{margin:8px 0 12px;padding-left:20px}
.qa .ans li{margin:7px 0}
.qa .ans b{color:var(--text)}
.faq-note{border-left:2px solid var(--blue);padding:12px 0 12px 18px;margin:10px 0 4px 78px;color:var(--muted);font-size:15px}
.adapt-table{width:100%;border-collapse:collapse;margin:8px 0}
.adapt-table td{padding:13px 16px;border-bottom:1px solid var(--line);font-size:15px}
.adapt-table td:first-child{color:#fff;font-weight:700;width:42%}
.adapt-table td:last-child{color:var(--muted)}
@media(max-width:640px){.qa .ans,.faq-note{padding-left:24px;margin-left:0}}

/* nav phone: prevent wrap, hide on tighter desktop (button remains) */
.nav-phone{white-space:nowrap}
.nav-links a{padding:8px 12px;white-space:nowrap}
@media(max-width:1400px){.nav-phone{display:none}}