:root{
    --bg:#0c0f14;
    --bg-soft:#11161e;
    --card:#151b24;
    --line:#232c39;
    --text:#e7edf5;
    --muted:#94a3b8;
    --accent:#2f80ed;
    --accent-2:#56a9f5;
    --accent-deep:#1b5bb0;
    --warn:#fbbf24;
    --radius:16px;
    --maxw:1140px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{
    font-family:'Segoe UI',system-ui,-apple-system,Roboto,Arial,sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  a{color:inherit;text-decoration:none}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
  section{padding:90px 0}
  h2{font-size:clamp(26px,4vw,38px);font-weight:800;letter-spacing:-.5px;margin-bottom:14px}
  .lead{color:var(--muted);max-width:620px;margin-bottom:46px;font-size:17px}
  .accent{color:var(--accent)}

  /* HEADER */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(12,15,20,.78);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:68px}
  .logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:-.3px}
  .logo .mark{width:40px;height:40px;display:grid;place-items:center}
  .logo .mark img{width:40px;height:40px;object-fit:contain;display:block}
  .nav-links{display:flex;gap:30px;font-size:15px;color:var(--muted)}
  .nav-links a:hover{color:var(--text)}
  .nav .cta{padding:10px 18px;border-radius:10px;background:var(--accent);color:#ffffff;font-weight:700;font-size:14px}
  .nav .cta:hover{background:var(--accent-2)}
  .burger{display:none;flex-direction:column;gap:5px;cursor:pointer}
  .burger span{width:24px;height:2px;background:var(--text);border-radius:2px}

  /* HERO */
  .hero{
    position:relative;padding:96px 0 88px;
    background:
      radial-gradient(900px 420px at 78% -10%,rgba(47,128,237,.16),transparent 60%),
      radial-gradient(700px 380px at 8% 30%,rgba(86,169,245,.08),transparent 60%);
  }
  .hero-grid{
    position:absolute;inset:0;z-index:0;opacity:.35;
    background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
    background-size:46px 46px;
    -webkit-mask-image:radial-gradient(700px 500px at 70% 0%,#000,transparent 75%);
            mask-image:radial-gradient(700px 500px at 70% 0%,#000,transparent 75%);
  }
  .hero .wrap{position:relative;z-index:1}
  .pill{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);
    border:1px solid rgba(47,128,237,.35);background:rgba(47,128,237,.07);
    padding:7px 14px;border-radius:999px;margin-bottom:24px;font-weight:600;
  }
  .pill .dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px var(--accent)}
  .hero h1{font-size:clamp(34px,5.6vw,60px);line-height:1.05;font-weight:900;letter-spacing:-1.4px;max-width:880px}
  .hero h1 span{background:linear-gradient(120deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero p{color:var(--muted);font-size:19px;max-width:600px;margin:24px 0 34px}
  .btn-row{display:flex;gap:14px;flex-wrap:wrap}
  .btn{padding:15px 28px;border-radius:12px;font-weight:700;font-size:16px;transition:.2s;cursor:pointer;border:none}
  .btn-primary{background:var(--accent);color:#ffffff}
  .btn-primary:hover{background:var(--accent-2);transform:translateY(-2px)}
  .btn-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
  .stats{display:flex;gap:42px;margin-top:56px;flex-wrap:wrap}
  .stat .num{font-size:32px;font-weight:900;color:var(--text)}
  .stat .lbl{color:var(--muted);font-size:14px}

  /* SERVICES */
  .grid{display:grid;gap:20px}
  .cols-3{grid-template-columns:repeat(3,1fr)}
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    padding:30px;transition:.25s;
  }
  .card:hover{border-color:rgba(47,128,237,.45);transform:translateY(-4px)}
  .card .ico{
    width:50px;height:50px;border-radius:12px;display:grid;place-items:center;margin-bottom:18px;
    background:rgba(47,128,237,.1);border:1px solid rgba(47,128,237,.25);
  }
  .card h3{font-size:19px;margin-bottom:9px}
  .card p{color:var(--muted);font-size:15px}

  /* REFERENCES */
  #references{background:var(--bg-soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
  .ref-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:16px}
  .ref-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:42px}
  .ref{
    position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
    aspect-ratio:4/3;cursor:pointer;background:var(--card);
  }
  .ref img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
  .ref .ph{position:absolute;inset:0;display:grid;place-items:center}
  .ref .ph svg{width:64px;height:64px;opacity:.25}
  .ref .ph.g1{background:linear-gradient(135deg,#16202b,#0f1620)}
  .ref .ph.g2{background:linear-gradient(135deg,#13241f,#0f1a16)}
  .ref .ph.g3{background:linear-gradient(135deg,#1b1f2c,#12141d)}
  .ref .meta{
    position:absolute;inset:auto 0 0 0;padding:18px;z-index:2;
    background:linear-gradient(transparent,rgba(8,11,15,.92));
  }
  .ref .meta .tag{font-size:12px;color:var(--accent);font-weight:700;text-transform:uppercase;letter-spacing:.6px}
  .ref .meta h4{font-size:16px;margin-top:4px}
  .ref:hover{border-color:rgba(47,128,237,.45)}
  .ref:hover .badge{transform:translateY(0);opacity:1}
  .badge{
    position:absolute;top:14px;right:14px;z-index:3;font-size:12px;font-weight:700;
    background:var(--accent);color:#ffffff;padding:5px 10px;border-radius:8px;
    transform:translateY(-6px);opacity:0;transition:.25s;
  }
  .ref-note{margin-top:30px;color:var(--muted);font-size:14px;display:flex;align-items:center;gap:9px}

  /* WHY */
  .why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .why{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px}
  .why .n{font-size:13px;color:var(--accent);font-weight:800;margin-bottom:10px}
  .why h4{font-size:16px;margin-bottom:7px}
  .why p{color:var(--muted);font-size:14px}

  /* CONTACT */
  #contact{background:var(--bg-soft);border-top:1px solid var(--line)}
  .contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}
  .contact-info .row{display:flex;gap:14px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}
  .contact-info .row .ci{width:42px;height:42px;border-radius:10px;background:rgba(47,128,237,.1);display:grid;place-items:center;flex-shrink:0}
  .contact-info .row .lbl{font-size:13px;color:var(--muted)}
  .contact-info .row .val{font-size:17px;font-weight:600}
  form{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:14px;color:var(--muted);margin-bottom:7px}
  .field input,.field textarea{
    width:100%;padding:13px 15px;border-radius:10px;background:var(--bg);
    border:1px solid var(--line);color:var(--text);font-size:15px;font-family:inherit;
  }
  .field input:focus,.field textarea:focus{outline:none;border-color:var(--accent)}
  .field textarea{resize:vertical;min-height:96px}
  form .btn-primary{width:100%}
  .form-ok{display:none;text-align:center;padding:30px;color:var(--accent);font-weight:600}

  /* LIGHTBOX */
  .lb{position:fixed;inset:0;z-index:100;background:rgba(6,9,13,.92);backdrop-filter:blur(4px);
      display:none;align-items:center;justify-content:center;padding:30px;cursor:zoom-out}
  .lb.open{display:flex}
  .lb img{max-width:92vw;max-height:82vh;border-radius:12px;border:1px solid var(--line);cursor:default;box-shadow:0 20px 60px rgba(0,0,0,.6)}
  .lb-cap{position:absolute;bottom:26px;left:0;right:0;text-align:center;color:var(--text);font-size:16px;font-weight:600}
  .lb-x{position:absolute;top:22px;right:26px;width:44px;height:44px;border-radius:11px;border:1px solid var(--line);
        background:rgba(21,27,36,.8);color:var(--text);font-size:22px;cursor:pointer;line-height:1}
  .lb-x:hover{border-color:var(--accent);color:var(--accent)}
  .lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;
          border:1px solid var(--line);background:rgba(21,27,36,.8);color:var(--text);font-size:24px;cursor:pointer}
  .lb-nav:hover{border-color:var(--accent);color:var(--accent)}
  .lb-prev{left:24px}.lb-next{right:24px}
  @media(max-width:560px){.lb-nav{display:none}}

  /* FOOTER */
  footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:14px}
  .foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
  .foot a:hover{color:var(--accent)}

  @media(max-width:880px){
    .cols-3,.ref-grid{grid-template-columns:1fr 1fr}
    .why-grid{grid-template-columns:1fr 1fr}
    .contact-grid{grid-template-columns:1fr;gap:30px}
    .nav-links{display:none}
    .burger{display:flex}
    .nav-links.open{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:var(--bg-soft);padding:20px 22px;gap:18px;border-bottom:1px solid var(--line)}
  }
  @media(max-width:560px){
    .cols-3,.ref-grid,.why-grid{grid-template-columns:1fr}
    section{padding:64px 0}
    .stats{gap:28px}
  }

  /* Hero split (главная) */
  .hero-split .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:50px;align-items:center}
  .hero-copy{min-width:0}
  .hero-media{border-radius:18px;overflow:hidden;border:1px solid var(--line);box-shadow:0 30px 60px -30px rgba(0,0,0,.7)}
  .hero-media img{width:100%;height:100%;object-fit:cover;display:block;aspect-ratio:4/3}
  @media(max-width:880px){ .hero-split .wrap{grid-template-columns:1fr;gap:32px} }
  @media(max-width:560px){ .hero-media{display:none} }

  /* Выпадающее меню «Услуги» */
  .has-drop{position:relative;display:inline-flex;align-items:center}
  .has-drop>a::after{content:"▾";font-size:11px;margin-left:5px;opacity:.7}
  .has-drop::after{content:"";position:absolute;top:100%;left:50%;transform:translateX(-50%);width:250px;height:16px}
  .drop{position:absolute;top:calc(100% + 12px);left:50%;transform:translateX(-50%);min-width:240px;background:var(--bg-soft);border:1px solid var(--line);border-radius:12px;padding:8px;display:none;flex-direction:column;gap:2px;box-shadow:0 24px 48px -24px rgba(0,0,0,.75)}
  .has-drop:hover .drop,.drop:hover{display:flex}
  .drop a{padding:10px 12px;border-radius:8px;font-size:14px;color:var(--muted);white-space:nowrap}
  .drop a:hover{background:var(--card);color:var(--accent)}
  @media(max-width:880px){
    .has-drop{display:block}
    .has-drop>a::after,.has-drop::after{display:none}
    .drop{position:static;transform:none;display:flex;border:none;box-shadow:none;background:none;padding:6px 0 0 14px;min-width:0}
  }

  /* Плавающие кнопки */
  .fab{position:fixed;left:20px;z-index:60;width:46px;height:46px;border-radius:50%;border:1px solid var(--line);background:var(--bg-soft);color:var(--text);align-items:center;justify-content:center;cursor:pointer;box-shadow:0 10px 24px -8px rgba(0,0,0,.6);transition:.2s;text-decoration:none}
  .fab:hover{border-color:var(--accent);color:var(--accent)}
  .fab svg{width:22px;height:22px}
  .fab-top{bottom:20px;display:none}
  .fab-top.show{display:flex}
  .fab-call{bottom:20px;display:none;background:var(--accent);color:#fff;border-color:var(--accent)}
  .fab-call:hover{color:#fff;opacity:.92}
  @media(max-width:880px){
    .fab-call{display:flex}
    .fab-top{bottom:76px}
  }

  /* PROCESS */
  .steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:18px;counter-reset:step}
  .step{position:relative;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 22px;transition:.25s}
  .step:hover{border-color:rgba(47,128,237,.45);transform:translateY(-4px)}
  .step::before{
    counter-increment:step;content:"0" counter(step);
    font-size:15px;font-weight:900;color:var(--accent);
    display:inline-grid;place-items:center;width:38px;height:38px;margin-bottom:16px;
    background:rgba(47,128,237,.1);border:1px solid rgba(47,128,237,.25);border-radius:10px;
  }
  .step h4{font-size:16px;margin-bottom:7px}
  .step p{color:var(--muted);font-size:14px}

  /* FAQ */
  .faq{display:grid;gap:12px;max-width:840px}
  .qa{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .2s}
  .qa[open]{border-color:rgba(47,128,237,.4)}
  .qa summary{
    list-style:none;cursor:pointer;padding:20px 22px;font-weight:600;font-size:16px;
    display:flex;justify-content:space-between;align-items:center;gap:16px;
  }
  .qa summary::-webkit-details-marker{display:none}
  .qa summary::after{content:"+";font-size:24px;line-height:1;color:var(--accent);transition:transform .2s;flex-shrink:0}
  .qa[open] summary::after{transform:rotate(45deg)}
  .qa .a{padding:0 22px 20px;color:var(--muted);font-size:15px}

  /* SCROLL REVEAL */
  .reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
  .reveal.in{opacity:1;transform:none}
  @media(prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    .reveal{opacity:1;transform:none;transition:none}
  }
  section[id]{scroll-margin-top:84px}

  /* DESIGN POLISH */
  ::selection{background:rgba(47,128,237,.28);color:#fff}
  ::-webkit-scrollbar{width:11px;height:11px}
  ::-webkit-scrollbar-track{background:var(--bg)}
  ::-webkit-scrollbar-thumb{background:#2a3647;border-radius:8px;border:2px solid var(--bg)}
  ::-webkit-scrollbar-thumb:hover{background:#384a63}
  a:focus-visible,button:focus-visible,summary:focus-visible,.ref:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:8px}

  /* section eyebrow */
  .eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
  .eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}

  /* SVG icons */
  .card .ico,.contact-info .row .ci{color:var(--accent);transition:.25s}
  .card .ico svg{width:26px;height:26px}
  .contact-info .row .ci svg{width:20px;height:20px}
  .card:hover .ico{background:var(--accent);border-color:var(--accent);color:#ffffff}

  /* card accent line */
  .card{position:relative;overflow:hidden}
  .card::after{content:"";position:absolute;inset:0 0 auto 0;height:3px;background:linear-gradient(90deg,var(--accent),var(--accent-2));transform:scaleX(0);transform-origin:left;transition:transform .35s ease}
  .card:hover::after{transform:scaleX(1)}

  /* why-card hover */
  .why{transition:.25s}
  .why:hover{border-color:rgba(47,128,237,.45);transform:translateY(-4px)}

  /* reference image zoom */
  .ref img{transition:transform .55s ease}
  .ref:hover img{transform:scale(1.06)}

  /* button & cta glow */
  .btn-primary{box-shadow:0 10px 26px -10px rgba(47,128,237,.55)}
  .btn-primary:hover{box-shadow:0 14px 30px -10px rgba(47,128,237,.7)}
  .nav .cta{transition:.2s;box-shadow:0 8px 20px -10px rgba(47,128,237,.55)}

  /* hero stats divider */
  .stats{border-top:1px solid var(--line);padding-top:34px;margin-top:46px}

  /* brands / элементная база */
  .brands{margin-top:50px;border-top:1px solid var(--line);padding-top:32px}
  .brands .cap{font-size:13px;font-weight:700;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted);margin-bottom:18px}
  .brand-list{display:flex;flex-wrap:wrap;gap:12px}
  .brand{display:inline-flex;align-items:center;padding:11px 18px;border:1px solid var(--line);border-radius:10px;background:var(--card);font-weight:700;font-size:15px;color:var(--text);transition:.2s}
  .brand:hover{border-color:rgba(47,128,237,.45);color:var(--accent);transform:translateY(-2px)}

  /* prose / SEO-текст */
  .prose{max-width:860px;color:var(--muted);font-size:16px}
  .prose p{margin-bottom:16px;line-height:1.75}
  .prose p:last-child{margin-bottom:0}