/* ===== 3D51 — v2 «неон» ===== */
*,*::before,*::after{box-sizing:border-box}
:root{
  --bg:#05070d; --bg2:#080d17; --panel:rgba(255,255,255,.045); --panel2:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.10); --line2:rgba(255,255,255,.16);
  --ink:#eaf2ff; --txt:#c3d2e8; --mut:#8ba0bd; --dim:#5f7189;
  --acc:#22d3ee; --acc2:#8b5cf6; --acc3:#f0abfc;
  --grad:linear-gradient(120deg,#22d3ee 0%,#60a5fa 45%,#8b5cf6 100%);
  --grad-soft:linear-gradient(120deg,rgba(34,211,238,.22),rgba(139,92,246,.22));
  --sh:0 24px 60px rgba(0,0,0,.55);
  --r:18px; --r2:26px;
}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--txt);overflow-x:hidden;
  font:400 17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(1100px 620px at 78% -8%,rgba(34,211,238,.13),transparent 60%),
    radial-gradient(900px 560px at 6% 6%,rgba(139,92,246,.12),transparent 62%),
    radial-gradient(1400px 900px at 50% 115%,rgba(34,211,238,.07),transparent 65%);
}
img{max-width:100%;display:block}
a{color:var(--acc);text-decoration:none}
a:hover{color:var(--acc3)}
h1,h2,h3,h4{color:var(--ink);margin:0;line-height:1.12;letter-spacing:-.02em;font-weight:800}
p{margin:0}
.wrap{width:min(1180px,92vw);margin:0 auto;position:relative;z-index:2}
.grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--mut)}
.dim{color:var(--dim)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;cursor:pointer;border:0;
  padding:15px 26px;border-radius:999px;font:700 16px/1 inherit;color:#04121a;
  background:var(--grad);box-shadow:0 10px 30px rgba(34,211,238,.28);
  transition:transform .25s cubic-bezier(.2,.8,.2,1),box-shadow .25s;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 18px 44px rgba(34,211,238,.4);color:#04121a}
.btn--ghost{
  background:transparent;color:var(--ink);border:1px solid var(--line2);box-shadow:none;
}
.btn--ghost:hover{border-color:var(--acc);color:#fff;box-shadow:0 0 0 4px rgba(34,211,238,.09)}

/* ---------- header ---------- */
.hd{position:fixed;inset:0 0 auto;z-index:60;transition:background .3s,backdrop-filter .3s,border-color .3s;border-bottom:1px solid transparent}
.hd--solid{background:rgba(5,7,13,.72);backdrop-filter:blur(14px);border-bottom-color:var(--line)}
.hd__in{display:flex;align-items:center;justify-content:space-between;gap:22px;height:74px}
.logo{font-weight:900;font-size:22px;letter-spacing:-.03em;color:var(--ink);display:flex;align-items:baseline;gap:2px}
.logo b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.logo span{color:var(--dim);font-size:14px;font-weight:700}
.nav{display:flex;gap:26px}
.nav a{color:var(--txt);font-size:15px;font-weight:600}
.nav a:hover{color:#fff}
.hd__cta{display:flex;align-items:center;gap:16px}
.tel{color:var(--ink);font-weight:700;font-size:15px;white-space:nowrap}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line2);background:transparent;border-radius:12px;position:relative;cursor:pointer}
.burger i{position:absolute;left:12px;right:12px;height:2px;background:var(--ink);border-radius:2px;transition:.3s}
.burger i:nth-child(1){top:15px}.burger i:nth-child(2){top:21px}.burger i:nth-child(3){top:27px}
.burger.on i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger.on i:nth-child(2){opacity:0}
.burger.on i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:120px 0 90px;overflow:hidden}
.hero__cv{position:absolute;inset:0;width:100%;height:100%;z-index:1}
.hero__veil{position:absolute;inset:0;z-index:1;pointer-events:none;
  background:linear-gradient(90deg,rgba(5,7,13,.94) 0%,rgba(5,7,13,.82) 38%,rgba(5,7,13,.35) 62%,rgba(5,7,13,.15) 100%);}
.hero__in{position:relative;z-index:3;width:min(1180px,92vw);margin:0 auto}
.hero__box{max-width:660px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font:700 12.5px/1 inherit;letter-spacing:.16em;text-transform:uppercase;
  color:var(--acc);background:var(--panel);border:1px solid var(--line);padding:9px 15px;border-radius:999px}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--acc);box-shadow:0 0 12px var(--acc);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}
.hero h1{font-size:clamp(38px,6.4vw,76px);margin:24px 0 0;letter-spacing:-.035em}
.hero h1 em{font-style:normal;display:block}
.hero__lead{margin:22px 0 0;font-size:clamp(17px,2vw,20px);color:var(--mut);max-width:560px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero__chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.chip{
  display:inline-flex;align-items:center;gap:9px;padding:11px 16px;border-radius:14px;
  background:var(--panel);border:1px solid var(--line);color:var(--txt);font-size:14.5px;font-weight:600;
  backdrop-filter:blur(10px);animation:float 6s ease-in-out infinite;
}
.chip:nth-child(2){animation-delay:1.4s}.chip:nth-child(3){animation-delay:2.6s}
.chip svg{width:17px;height:17px;stroke:var(--acc)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
.scrollhint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:3;display:flex;flex-direction:column;align-items:center;gap:8px;color:var(--dim);font-size:12px;letter-spacing:.14em;text-transform:uppercase}
.scrollhint i{width:1px;height:34px;background:linear-gradient(var(--acc),transparent);animation:drop 1.8s infinite}
@keyframes drop{0%{opacity:0;transform:scaleY(.2)}50%{opacity:1}100%{opacity:0;transform:scaleY(1)}}

/* ---------- marquee ---------- */
.marq{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.02);overflow:hidden;position:relative;z-index:2}
.marq__track{display:flex;gap:0;width:max-content;animation:slide 38s linear infinite}
.marq__item{display:flex;align-items:center;gap:26px;padding:17px 26px;color:var(--mut);font:700 14px/1 inherit;letter-spacing:.13em;text-transform:uppercase;white-space:nowrap}
.marq__item b{color:var(--ink)}
.marq__item s{width:6px;height:6px;border-radius:50%;background:var(--acc2);text-decoration:none}
@keyframes slide{to{transform:translateX(-50%)}}

/* ---------- sections ---------- */
.sec{padding:104px 0;position:relative;z-index:2}
.sec--tight{padding:82px 0}
.sec__head{max-width:760px;margin-bottom:48px}
.sec__head h2{font-size:clamp(28px,4vw,46px);margin:18px 0 0}
.sec__head p{margin-top:16px;color:var(--mut);font-size:17.5px}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.card{
  position:relative;padding:28px 26px 30px;border-radius:var(--r);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.05),rgba(255,255,255,.015));
  transition:transform .3s cubic-bezier(.2,.8,.2,1),border-color .3s,box-shadow .3s;
  overflow:hidden;
}
.card::after{
  content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;opacity:0;pointer-events:none;
  background:var(--grad);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;transition:opacity .35s;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh)}
.card:hover::after{opacity:1}
.card__ico{width:50px;height:50px;border-radius:14px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--grad-soft);border:1px solid var(--line)}
.card__ico svg{width:25px;height:25px;stroke:var(--acc);fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.card h3{font-size:19.5px;margin-bottom:10px}
.card p{color:var(--mut);font-size:15.6px}
.card__tag{display:inline-block;margin-top:14px;font-size:13px;font-weight:700;color:var(--acc);letter-spacing:.04em}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;position:relative}
.step{padding:26px 24px;border-radius:var(--r);border:1px solid var(--line);background:var(--panel);position:relative}
.step b{display:block;font:900 40px/1 inherit;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;margin-bottom:14px}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--mut);font-size:15.4px}

/* ---------- materials ---------- */
.mats{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.mat{padding:20px;border-radius:16px;border:1px solid var(--line);background:var(--panel)}
.mat__top{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.mat__dot{width:14px;height:14px;border-radius:50%;box-shadow:0 0 14px currentColor}
.mat b{color:var(--ink);font-size:17px}
.mat p{color:var(--mut);font-size:15px}

/* ---------- prices ---------- */
.prices{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.price{padding:34px 28px;border-radius:var(--r2);border:1px solid var(--line);background:var(--panel);position:relative;transition:transform .3s}
.price:hover{transform:translateY(-5px)}
.price--hot{border-color:transparent;background:
  linear-gradient(#0a1120,#0a1120) padding-box,var(--grad) border-box;box-shadow:0 24px 70px rgba(34,211,238,.16)}
.price__badge{position:absolute;top:-13px;left:28px;background:var(--grad);color:#04121a;font:800 12px/1 inherit;letter-spacing:.1em;text-transform:uppercase;padding:8px 14px;border-radius:999px}
.price h3{font-size:17px;color:var(--mut);font-weight:700;letter-spacing:.02em}
.price .sum{font:900 clamp(30px,4vw,42px)/1 inherit;color:var(--ink);margin:16px 0 6px;letter-spacing:-.03em}
.price ul{list-style:none;padding:0;margin:20px 0 0;display:grid;gap:11px}
.price li{display:flex;gap:10px;color:var(--txt);font-size:15.4px}
.price li::before{content:"";flex:0 0 18px;height:18px;margin-top:3px;border-radius:50%;
  background:var(--grad-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='3.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 6L9 17l-5-5'/%3E%3C/svg%3E") center/12px no-repeat}

/* ---------- faq ---------- */
.faq{display:grid;gap:12px;max-width:900px}
.faq details{border:1px solid var(--line);border-radius:16px;background:var(--panel);overflow:hidden;transition:border-color .3s}
.faq details[open]{border-color:var(--line2);background:rgba(255,255,255,.06)}
.faq summary{cursor:pointer;list-style:none;padding:20px 56px 20px 22px;font-weight:700;color:var(--ink);font-size:16.5px;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:24px;color:var(--acc);transition:transform .3s}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq p{padding:0 22px 22px;color:var(--mut);font-size:15.8px}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;align-items:start}
.form{padding:32px 30px;border-radius:var(--r2);border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));backdrop-filter:blur(10px)}
.fields{display:grid;gap:14px;margin-top:22px}
.field label{display:block;font-size:13.5px;font-weight:700;color:var(--mut);margin-bottom:7px;letter-spacing:.03em}
.field input,.field textarea,.field select{
  width:100%;padding:14px 15px;border-radius:13px;border:1px solid var(--line2);
  background:rgba(4,8,16,.6);color:var(--ink);font:400 16px/1.4 inherit;outline:none;transition:border-color .25s,box-shadow .25s;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--acc);box-shadow:0 0 0 4px rgba(34,211,238,.12)}
.field textarea{min-height:110px;resize:vertical}
.field .hint{display:block;font-size:12.5px;color:var(--dim);margin-top:7px;line-height:1.45}
.field input[type=file]{padding:11px 12px;font-size:13.5px;color:var(--mut);background:rgba(255,255,255,.02)}
.field select option{background:#0a1120}
.form__note{font-size:13.5px;color:var(--dim);margin-top:14px}
.ok{margin-top:16px;padding:15px 18px;border-radius:14px;border:1px solid rgba(34,211,238,.4);background:rgba(34,211,238,.1);color:var(--ink);font-weight:600;display:none}
.ok.on{display:block}
.info{display:grid;gap:14px}
.ibox{padding:22px;border-radius:var(--r);border:1px solid var(--line);background:var(--panel)}
.ibox b{display:block;color:var(--mut);font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:9px}
.ibox a,.ibox span{color:var(--ink);font-weight:700;font-size:17px}
.ibox p{color:var(--mut);font-size:15.4px;margin-top:6px}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:44px 0;position:relative;z-index:2;background:rgba(4,7,14,.6)}
.foot{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}
.foot .logo{font-size:19px}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.8,.2,1),transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}
.prog{position:fixed;top:0;left:0;height:2px;width:0;z-index:70;background:var(--grad)}
.cglow{position:fixed;width:520px;height:520px;left:0;top:0;margin:-260px 0 0 -260px;border-radius:50%;pointer-events:none;z-index:1;
  background:radial-gradient(circle,rgba(34,211,238,.10),transparent 62%);transition:opacity .4s;opacity:0}

/* ---------- responsive ---------- */
@media (max-width:1000px){
  .contact{grid-template-columns:1fr}
  .nav{position:fixed;inset:74px 0 auto;flex-direction:column;gap:0;background:rgba(5,7,13,.97);backdrop-filter:blur(16px);
    border-bottom:1px solid var(--line);padding:10px 6vw 22px;transform:translateY(-140%);transition:transform .38s cubic-bezier(.2,.8,.2,1)}
  .nav.on{transform:none}
  .nav a{padding:15px 4px;border-bottom:1px solid var(--line);font-size:17px}
  .burger{display:block}
  .tel{display:none}
}
@media (max-width:760px){
  .hero{display:flex;flex-direction:column;padding:88px 0 0;min-height:auto}
  .hero__cv{position:relative;order:1;height:40vh;min-height:290px;width:100%}
  .hero__veil{display:none}
  .hero__in{order:2;padding:22px 0 34px}
  .scrollhint{display:none}
  .sec{padding:74px 0}
  .sec__head{margin-bottom:34px}
  .cglow{display:none}
  .btn{padding:14px 22px;font-size:15px}
}
@media (max-width:560px){
  .hd__cta .btn{display:none}
  .hero h1{font-size:clamp(30px,8.8vw,44px)}
  .hero__lead{font-size:16.5px}
  .hero__chips{gap:9px}
  .chip{font-size:13.4px;padding:10px 13px;border-radius:12px}
  .eyebrow{font-size:11px;padding:8px 12px;letter-spacing:.12em}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .chip,.marq__track,.scrollhint i,.eyebrow i{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
}

/* ---------- подстраницы под запросы ---------- */
.subhero{padding:132px 0 22px;position:relative;z-index:2}
.crumbs{font-size:13.5px;color:var(--dim);margin-bottom:16px}
.crumbs a{color:var(--mut)}
.crumbs a:hover{color:#fff}
.subhero h1{font-size:clamp(28px,4.6vw,52px);margin:14px 0 0;letter-spacing:-.03em}
.subhero .lead{margin-top:16px;color:var(--mut);font-size:18px;max-width:840px}
.sec--sub{padding:52px 0}
.art{max-width:900px}
.art h2{font-size:clamp(22px,3vw,32px);margin:40px 0 14px}
.art h3{font-size:19.5px;margin:26px 0 10px}
.art p{margin:0 0 15px;color:var(--mut);font-size:16.8px}
.art ul,.art ol{margin:0 0 18px;padding-left:24px;color:var(--mut);font-size:16.8px}
.art li{margin-bottom:9px}
.art b,.art strong{color:var(--ink)}
.tbl{width:100%;border-collapse:collapse;margin:10px 0 20px;font-size:15.8px}
.tbl th,.tbl td{padding:13px 14px;border-bottom:1px solid var(--line);text-align:left}
.tbl th{color:var(--mut);font-size:12.5px;letter-spacing:.08em;text-transform:uppercase}
.tbl td:last-child{color:var(--ink);font-weight:700;white-space:nowrap}
.tbl tr:hover td{background:rgba(255,255,255,.03)}
.related{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}
.related a{padding:11px 16px;border:1px solid var(--line);border-radius:12px;color:var(--txt);
  font-size:14.6px;font-weight:600;background:var(--panel)}
.related a:hover{border-color:var(--acc);color:#fff}
.pagefoot{display:flex;flex-wrap:wrap;gap:22px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line)}
@media (max-width:760px){
  .subhero{padding:104px 0 8px}
  .tbl th,.tbl td{padding:10px 8px;font-size:14.6px}
}