:root{
  --navy:#16305c;
  --navy-deep:#0e2242;
  --steel:#4a7ab5;
  --cream:#f2ecd8;
  --bg:#ffffff;
  --bg-soft:#f6f8fb;
  --line:#e3e8ef;
  --text:#1c2430;
  --muted:#5b6675;
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Segoe UI','Helvetica Neue',Arial,'Noto Sans',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;font-size:16px}
img{max-width:100%;display:block}
a{color:var(--steel);text-decoration:none}
ul{list-style:none}
.container{max-width:1120px;margin:0 auto;padding:0 24px}

/* top bar + header */
.topbar{background:var(--navy-deep);color:#cfd8e6;font-size:13px;padding:6px 0}
.topbar .container{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
header.site{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--navy);font-size:17px;flex-shrink:0}
.brand img{width:38px;height:38px;border-radius:8px;object-fit:cover}
.brand small{display:block;font-weight:400;font-size:11px;color:var(--muted);line-height:1.1}
.menu{display:flex;gap:22px;align-items:center;font-size:14.5px;font-weight:500}
.menu > a, .menu .has-sub > a{color:var(--text);padding:20px 0;display:inline-block}
.menu a:hover{color:var(--steel)}
.menu a.active{color:var(--navy);font-weight:700;box-shadow:inset 0 -2px 0 var(--navy)}
.has-sub{position:relative}
.has-sub .sub{position:absolute;top:100%;left:-16px;min-width:220px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 28px rgba(22,48,92,.12);padding:8px;display:none}
.has-sub:hover .sub{display:block}
.has-sub .sub a{display:block;padding:9px 12px;border-radius:8px;font-size:14px}
.has-sub .sub a:hover{background:var(--bg-soft)}
.nav-right{display:flex;align-items:center;gap:12px}
.lang-switch{display:flex;border:1px solid var(--line);border-radius:8px;overflow:hidden}
.lang-switch button{border:0;background:#fff;padding:6px 12px;font-size:13px;cursor:pointer;color:var(--muted);font-weight:600}
.lang-switch button.active{background:var(--navy);color:#fff}
.burger{display:none;background:none;border:0;font-size:22px;color:var(--navy);cursor:pointer;padding:4px 6px}

/* buttons */
.btn{display:inline-block;background:var(--navy);color:#fff;padding:10px 20px;border-radius:10px;font-weight:600;font-size:15px;border:0;cursor:pointer;text-align:center}
.btn:hover{background:var(--steel);color:#fff}
.btn-wa{background:#1faa59}
.btn-wa:hover{background:#188a48}
.btn-ghost{background:transparent;color:var(--navy);border:1.5px solid var(--navy)}
.btn-ghost:hover{background:var(--navy);color:#fff}
.btn-light{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6)}
.btn-light:hover{background:#fff;color:var(--navy)}
.nav-cta{padding:8px 16px;font-size:14px;white-space:nowrap}

/* hero */
.hero{background:linear-gradient(160deg,var(--navy-deep) 0%,var(--navy) 62%,#27508f 100%);color:#fff;padding:76px 0 64px}
.hero .kicker{color:#bcd0ea;font-size:14px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:14px}
.hero h1{font-size:clamp(28px,4.4vw,46px);line-height:1.15;max-width:820px;font-weight:800}
.hero h1 em{font-style:normal;color:#d9c98a}
.hero p.sub{margin:18px 0 28px;max-width:700px;color:#d7e0ee;font-size:17px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:48px}
.stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius);padding:18px 20px}
.stat b{display:block;font-size:26px;color:#fff}
.stat span{font-size:13.5px;color:#b9c7dc}

/* page hero (subpages) */
.page-hero{background:linear-gradient(150deg,var(--navy-deep),#1e3d70);color:#fff;padding:48px 0 44px}
.page-hero h1{font-size:clamp(26px,3.6vw,38px);margin-bottom:10px;font-weight:800}
.page-hero p{color:#c9d6e9;max-width:720px;font-size:16.5px}
.breadcrumb{font-size:13px;color:#9db2cf;margin-bottom:14px}
.breadcrumb a{color:#cfdcee}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{color:#fff}

/* sections */
section{padding:64px 0}
section.soft{background:var(--bg-soft)}
section.tight{padding:44px 0}
.sec-label{color:var(--steel);font-size:13.5px;letter-spacing:.08em;text-transform:uppercase;font-weight:700;margin-bottom:10px}
h2{font-size:clamp(23px,3vw,32px);color:var(--navy);line-height:1.2;margin-bottom:14px}
h3{color:var(--navy)}
p.lead{color:var(--muted);max-width:780px;margin-bottom:32px;font-size:16.5px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;flex-wrap:wrap;margin-bottom:28px}

/* product line cards */
.line-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.line-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.line-card:hover{box-shadow:0 10px 26px rgba(22,48,92,.12);transform:translateY(-3px)}
.line-card .thumb{height:180px;overflow:hidden;background:#eef1f6}
.line-card .thumb img{width:100%;height:100%;object-fit:cover}
.line-card .body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
.line-card h3{font-size:18px;margin-bottom:6px}
.line-card .count{font-size:13px;color:var(--steel);font-weight:700;margin-bottom:8px}
.line-card p{font-size:14px;color:var(--muted);flex:1}
.line-card .tags{margin:10px 0 14px;display:flex;flex-wrap:wrap;gap:6px}
.tag{background:var(--bg-soft);border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:2px 10px;font-size:12px}
.line-card a.more{font-weight:600;color:var(--navy)}
.line-card a.more:hover{color:var(--steel)}

/* featured */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column}
.feat .ph{height:200px;overflow:hidden;background:#eef1f6}
.feat .ph img{width:100%;height:100%;object-fit:cover;transition:.3s}
.feat:hover .ph img{transform:scale(1.04)}
.feat .body{padding:16px 18px 18px;display:flex;flex-direction:column;flex:1}
.feat .cat{font-size:12px;color:var(--steel);font-weight:700;letter-spacing:.04em;text-transform:uppercase}
.feat h3{font-size:16.5px;margin:4px 0 10px}
.feat ul{font-size:13.5px;color:var(--muted);margin-bottom:14px}
.feat ul li{padding:3px 0;border-bottom:1px dashed var(--line)}
.feat ul li b{color:var(--text);font-weight:600}
.feat a.req{margin-top:auto;font-weight:600;color:var(--navy)}

/* gallery */
.cat-block{margin-top:36px}
.cat-block:first-of-type{margin-top:0}
.gal{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gal figure{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden;cursor:zoom-in}
.gal img{width:100%;height:185px;object-fit:cover}
.gal figcaption{padding:8px 12px;font-size:13px;font-weight:600;color:var(--navy);border-top:1px solid var(--line)}
.catalog-tools{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-bottom:20px}
#cat-search{flex:1;min-width:220px;max-width:380px;padding:11px 16px;border:1.5px solid var(--line);border-radius:10px;font-size:15px;outline:none;background:#fff}
#cat-search:focus{border-color:var(--steel)}
#cat-count{font-size:13.5px;color:var(--muted)}

/* spec list */
.spec-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:6px 22px;margin-bottom:34px}
.spec-list .row{display:grid;grid-template-columns:150px 1fr;gap:14px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:14.5px}
.spec-list .row:last-child{border-bottom:0}
.spec-list .row b{color:var(--navy)}
.spec-list .row span{color:var(--muted)}

/* factory */
.factory-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.factory-grid img{width:100%;height:170px;object-fit:cover;border-radius:10px;border:1px solid var(--line);cursor:zoom-in}
.lab-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:18px}
.lab-card{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.lab-card img{width:100%;height:150px;object-fit:cover;cursor:zoom-in}
.lab-card figcaption{padding:10px 14px;font-size:13px;color:var(--muted);line-height:1.45}

/* terms */
.terms{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.term{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.term h3{font-size:16.5px;margin-bottom:8px}
.term p{font-size:14.5px;color:var(--muted)}
.term .num{display:inline-block;background:var(--cream);color:var(--navy);font-weight:800;border-radius:8px;padding:2px 10px;font-size:14px;margin-bottom:10px}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.step .n{font-size:13px;font-weight:800;color:var(--steel)}
.step h3{font-size:16.5px;margin:6px 0}
.step p{font-size:14px;color:var(--muted)}
.step .note{margin-top:8px;font-size:12.5px;color:var(--steel);font-weight:600}

/* scenarios */
.scen-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.scen{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:10px}
.scen .badge{align-self:flex-start;background:var(--cream);color:var(--navy);font-weight:800;font-size:12.5px;border-radius:999px;padding:4px 14px;letter-spacing:.04em}
.scen h3{font-size:18px}
.scen ul{font-size:14px;color:var(--muted)}
.scen ul li{padding:5px 0 5px 22px;position:relative}
.scen ul li::before{content:"✓";position:absolute;left:0;color:var(--steel);font-weight:700}
.scen a.btn{align-self:flex-start;margin-top:auto}

/* documents */
.docs-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:14.5px}
.docs-table th{background:var(--navy);color:#fff;text-align:left;padding:12px 16px;font-size:13.5px;letter-spacing:.03em}
.docs-table td{padding:11px 16px;border-top:1px solid var(--line);color:var(--muted)}
.docs-table td:first-child{color:var(--text);font-weight:600}
.docs-table .ok{color:#1faa59;font-weight:700}

/* faq */
.faq{max-width:820px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin-bottom:12px}
.faq summary{cursor:pointer;font-weight:600;color:var(--navy);font-size:15.5px}
.faq p{margin-top:10px;color:var(--muted);font-size:14.5px}

/* contact */
.contact-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:34px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.contact-card table{width:100%;border-collapse:collapse;font-size:14.5px}
.contact-card td{padding:10px 0;border-bottom:1px dashed var(--line);vertical-align:top}
.contact-card td:first-child{color:var(--muted);width:40%}
.contact-card td:last-child{color:var(--text);font-weight:500}
.contact-card a{font-weight:600}
.contact-cta{background:var(--navy);color:#fff;border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;gap:14px;align-self:start}
.contact-cta h3{font-size:20px;color:#fff}
.contact-cta p{color:#c9d5e8;font-size:14.5px}
.contact-cta .btn{align-self:flex-start}

/* cta band */
.cta-band{background:linear-gradient(140deg,var(--navy),#2a5596);color:#fff;border-radius:var(--radius);padding:34px 36px;display:flex;gap:24px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:24px;margin-bottom:6px}
.cta-band p{color:#cfdcee;font-size:15px;max-width:560px}
.cta-band .btns{display:flex;gap:12px;flex-wrap:wrap}

/* note box */
.note-box{background:var(--cream);border-radius:var(--radius);padding:20px 24px;display:flex;gap:16px;align-items:flex-start;margin-top:28px}
.note-box .ic{font-size:22px;line-height:1.2}
.note-box p{font-size:14.5px;color:var(--navy)}
.note-box a{font-weight:700}

/* lightbox */
.lightbox{display:none;position:fixed;inset:0;background:rgba(10,20,38,.88);z-index:200;align-items:center;justify-content:center;padding:24px}
.lightbox.open{display:flex}
.lightbox figure{max-width:820px;width:100%;background:#fff;border-radius:14px;overflow:hidden;position:relative;margin:0}
.lightbox img{width:100%;max-height:64vh;object-fit:contain;background:#f2f4f8}
.lightbox figcaption{padding:16px 20px;display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.lightbox .code{font-weight:800;color:var(--navy);font-size:17px}
.lightbox .close{position:absolute;top:10px;right:12px;background:none;border:0;color:#fff;font-size:30px;cursor:pointer;line-height:1}
.lightbox figcaption a{font-weight:600}

/* keyword entry cloud */
.kw-cols{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.kw-cols h3{font-size:15px;color:var(--navy);margin-bottom:12px}
.kw-list{display:flex;flex-wrap:wrap;gap:8px}
.kw-list a{background:#fff;border:1px solid var(--line);border-radius:999px;padding:5px 13px;font-size:13px;color:var(--muted)}
.kw-list a:hover{border-color:var(--steel);color:var(--navy);background:var(--bg-soft)}
html[lang="en"] .kw-ru,html[lang="ru"] .kw-en{display:none}

/* footer contact */
.fcontact{line-height:1.8}
.fcontact a{color:#c9d5e8}

/* floating whatsapp */
#waFloat{position:fixed;left:20px;bottom:20px;z-index:130;display:flex;align-items:center;gap:8px;background:#1faa59;color:#fff;padding:11px 16px;border-radius:999px;font-size:14px;font-weight:600;box-shadow:0 8px 20px rgba(31,170,89,.35)}
#waFloat:hover{background:#188a48;color:#fff}
@media(max-width:720px){#waFloat{padding:12px;font-size:0;gap:0}#waFloat::before{content:"✆";font-size:20px}}

/* footer */
footer{background:var(--navy-deep);color:#9fb0c9;padding:38px 0;font-size:13.5px}
footer .container{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:flex-start}
footer b{color:#e6ecf5}
footer .fnav{display:flex;gap:18px;flex-wrap:wrap}
footer .fnav a{color:#c9d5e8}

/* back to top + reveal */
#toTop{position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;background:var(--navy);color:#fff;border:0;font-size:20px;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;z-index:120;box-shadow:0 6px 16px rgba(22,48,92,.35)}
#toTop.show{opacity:1;pointer-events:auto}
#toTop:hover{background:var(--steel)}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .55s ease,transform .55s ease}
.reveal.in{opacity:1;transform:none}

@media(max-width:960px){
  .stats,.steps{grid-template-columns:repeat(2,1fr)}
  .line-grid,.feat-grid,.terms,.scen-grid{grid-template-columns:repeat(2,1fr)}
  .gal,.factory-grid,.lab-grid{grid-template-columns:repeat(3,1fr)}
  .contact-wrap{grid-template-columns:1fr}
  .nav-cta{display:none}
}
@media(max-width:720px){
  .burger{display:block}
  .menu{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:flex-start;gap:0;padding:8px 20px 16px;box-shadow:0 14px 24px rgba(22,48,92,.10)}
  .menu.open{display:flex}
  .menu > a,.menu .has-sub > a{padding:11px 0;width:100%}
  .has-sub .sub{position:static;display:block;border:0;box-shadow:none;padding:0 0 0 12px;min-width:0;background:transparent}
  .stats,.steps,.line-grid,.feat-grid,.terms,.scen-grid{grid-template-columns:1fr}
  .gal{grid-template-columns:repeat(2,1fr)}
  .factory-grid,.lab-grid{grid-template-columns:repeat(2,1fr)}
  .hero{padding:54px 0 46px}
  section{padding:48px 0}
  .cta-band{padding:26px}
  .spec-list .row{grid-template-columns:1fr;gap:2px}
}