:root{
  --bg:#0a1120; --bg2:#0e1729; --card:#111d33; --line:#1d2c47;
  --text:#e6edf7; --muted:#93a3bd; --accent:#22d3ee; --accent2:#3b82f6; --ok:#4ade80;
  --radius:16px; --maxw:1180px;
  --font:'Manrope',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
svg{display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.accent{background:linear-gradient(90deg,var(--accent),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}

/* header */
.header{position:sticky;top:0;z-index:50;background:rgba(10,17,32,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.header__inner{display:flex;align-items:center;gap:32px;height:68px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:22px;letter-spacing:.5px}
.logo b{color:var(--accent)}
.logo__mark{width:32px;height:32px;color:var(--accent)}
.logo--sm{font-size:20px;margin-bottom:10px}
.nav{display:flex;gap:26px;margin-left:auto}
.nav a{color:var(--muted);font-weight:600;font-size:15px;transition:color .2s}
.nav a:hover{color:var(--text)}
.header__phone{font-weight:700;white-space:nowrap}
.burger{display:none;background:none;border:0;width:40px;height:40px;cursor:pointer;flex-direction:column;justify-content:center;gap:5px;padding:8px}
.burger span{display:block;height:2px;background:var(--text);border-radius:2px;transition:.25s}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 26px;border-radius:12px;font-weight:700;font-size:16px;transition:transform .15s,box-shadow .2s,background .2s;border:1px solid transparent}
.btn--primary{background:linear-gradient(90deg,var(--accent),var(--accent2));color:#04121f;box-shadow:0 8px 30px -10px rgba(34,211,238,.6)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 34px -10px rgba(34,211,238,.8)}
.btn--ghost{border-color:var(--line);color:var(--text)}
.btn--ghost:hover{border-color:var(--accent)}

/* hero */
.hero{position:relative;overflow:hidden;padding:80px 0 90px;background:
  radial-gradient(700px 400px at 85% 20%,rgba(59,130,246,.18),transparent 60%),
  radial-gradient(600px 400px at 10% 90%,rgba(34,211,238,.10),transparent 60%)}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:48px 48px;opacity:.35;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 75%);pointer-events:none}
.hero__inner{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.eyebrow{color:var(--accent);font-weight:700;font-size:13px;letter-spacing:1.6px;text-transform:uppercase;margin-bottom:14px}
h1{font-size:clamp(34px,5vw,58px);line-height:1.08;font-weight:800;letter-spacing:-.5px;margin-bottom:22px}
h2{font-size:clamp(28px,3.4vw,40px);line-height:1.15;font-weight:800;letter-spacing:-.3px;margin-bottom:14px}
h3{font-size:19px;font-weight:700;margin-bottom:8px}
.lead{font-size:18px;color:var(--muted);max-width:580px;margin-bottom:32px}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:32px}
.hero__badges{display:flex;flex-wrap:wrap;gap:10px 22px;list-style:none;color:var(--muted);font-size:14px;font-weight:600}
.hero__badges li{display:flex;align-items:center;gap:8px}
.hero__badges li::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 10px var(--ok)}
.netart{width:100%;max-width:460px;margin-left:auto}
.netart__lines path{stroke-dasharray:6 6;animation:dash 18s linear infinite}
.blink{animation:blink 1.6s ease-in-out infinite}.d2{animation-delay:.6s}
@keyframes dash{to{stroke-dashoffset:-240}}
@keyframes blink{50%{opacity:.25}}

/* sections */
.section{padding:90px 0}
.section--alt{background:var(--bg2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{max-width:720px;margin-bottom:46px}
.section__sub{color:var(--muted);font-size:17px;margin-bottom:24px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;transition:transform .2s,border-color .2s}
.card:hover{transform:translateY(-4px);border-color:rgba(34,211,238,.5)}
.card p{color:var(--muted);font-size:15px}
.card__icon{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;background:rgba(34,211,238,.1);margin-bottom:18px}
.card__icon svg{width:26px;height:26px;fill:none;stroke:var(--accent);stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}

/* split / steps */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.steps-list{list-style:none;counter-reset:s;display:grid;gap:14px}
.steps-list li{counter-increment:s;position:relative;padding:20px 22px 20px 72px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius)}
.steps-list li::before{content:counter(s,decimal-leading-zero);position:absolute;left:22px;top:20px;font-weight:800;color:var(--accent);font-size:20px}
.steps-list b{display:block;margin-bottom:4px}
.steps-list span{color:var(--muted);font-size:15px}

/* features */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.feature{padding:26px 22px;border-left:2px solid var(--line);transition:border-color .2s}
.feature:hover{border-color:var(--accent)}
.feature__num{display:block;font-weight:800;font-size:14px;color:var(--accent);margin-bottom:12px}
.feature p{color:var(--muted);font-size:15px}

/* process */
.process{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;position:relative}
.process__step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px 26px}
.process__step span{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent2));color:#04121f;font-weight:800;font-size:18px;margin-bottom:18px}
.process__step p{color:var(--muted);font-size:15px}

/* cases */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case{background:linear-gradient(180deg,var(--card),var(--bg2));border:1px dashed var(--line);border-radius:var(--radius);padding:26px 24px;min-height:190px}
.case__tag{display:inline-block;font-size:12px;font-weight:700;color:var(--accent);background:rgba(34,211,238,.1);padding:4px 10px;border-radius:20px;margin-bottom:14px}
.case p{color:var(--muted);font-size:15px}

/* contacts */
.contacts{background:radial-gradient(700px 360px at 80% 50%,rgba(59,130,246,.15),transparent 60%),var(--bg2);border-top:1px solid var(--line)}
.contacts__inner{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.contact-list{list-style:none;display:grid;gap:14px}
.contact-list li{display:grid;grid-template-columns:110px 1fr;gap:12px;font-weight:600}
.contact-list span{color:var(--muted);font-weight:500}
.contact-list a:hover{color:var(--accent)}
.messengers{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.msg{display:flex;align-items:center;gap:14px;padding:20px;border-radius:var(--radius);background:var(--card);border:1px solid var(--line);transition:transform .2s,border-color .2s}
.msg:hover{transform:translateY(-3px)}
.msg svg{width:34px;height:34px;flex:none}
.msg b{display:block}.msg small{color:var(--muted);font-size:13px}
.msg--tg svg{fill:#2aabee}.msg--tg:hover{border-color:#2aabee}
.msg--max svg{fill:#8b5cf6}.msg--max:hover{border-color:#8b5cf6}
.msg--wa svg{fill:#25d366}.msg--wa:hover{border-color:#25d366}
.msg--vk svg{fill:#0077ff}.msg--vk:hover{border-color:#0077ff}

/* footer */
.footer{padding:50px 0 26px;border-top:1px solid var(--line)}
.footer__inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;margin-bottom:30px}
.footer p{color:var(--muted);font-size:14px;max-width:360px}
.footer__links,.footer__contacts{display:flex;flex-direction:column;gap:8px;font-size:15px}
.footer__links a{color:var(--muted)}.footer__links a:hover,.footer__contacts a:hover{color:var(--accent)}
.footer__copy{color:#61718c;font-size:13px;border-top:1px solid var(--line);padding-top:20px}

/* floating telegram */
.fab{position:fixed;right:20px;bottom:20px;z-index:60;width:58px;height:58px;border-radius:50%;background:#2aabee;display:grid;place-items:center;box-shadow:0 10px 30px -6px rgba(42,171,238,.7);transition:transform .2s}
.fab:hover{transform:scale(1.08)}
.fab svg{width:28px;height:28px;fill:#fff}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}

/* responsive */
@media (max-width:1024px){
  .cards,.features{grid-template-columns:repeat(2,1fr)}
  .header__phone{display:none}
}
@media (max-width:860px){
  .burger{display:flex;margin-left:auto}
  .nav{position:fixed;top:68px;left:0;right:0;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 20px 18px;transform:translateY(-120%);transition:transform .3s;margin:0}
  .nav a{padding:12px 0;border-bottom:1px solid var(--line);font-size:17px}
  .nav.is-open{transform:none}
  .burger.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .burger.is-open span:nth-child(2){opacity:0}
  .burger.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .hero{padding:50px 0 60px}
  .hero__inner,.split,.contacts__inner{grid-template-columns:1fr}
  .hero__art{order:-1}.netart{max-width:300px;margin:0 auto}
  .process,.cases{grid-template-columns:1fr}
  .footer__inner{grid-template-columns:1fr}
  .section{padding:64px 0}
}
@media (max-width:520px){
  .cards,.features,.messengers{grid-template-columns:1fr}
  .container{padding:0 16px}
  .btn{width:100%}
  .contact-list li{grid-template-columns:1fr;gap:0}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}