:root{
  --inox-1:#f4f6f8; --inox-2:#dfe4e9; --ink:#161b21; --ink-2:#4c5661;
  --line:#dde2e7; --accent:#0e6ba8; --accent-d:#0a4e7c; --white:#fff;
  --shadow:0 2px 14px rgba(20,30,40,.09); --radius:6px;
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--white);line-height:1.65;font-size:16.5px}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-d)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}

/* ---------- top bar ---------- */
.topbar{background:var(--ink);color:#c9d2db;font-size:13.5px}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;
  gap:14px;flex-wrap:wrap;min-height:40px}
.topbar a{color:#c9d2db}
.topbar a:hover{color:#fff}
.topbar ul{list-style:none;display:flex;gap:16px;margin:0;padding:0;flex-wrap:wrap}
.topbar .social{gap:12px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid var(--line);box-shadow:0 1px 8px rgba(0,0,0,.05)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;
  gap:18px;min-height:78px}
.logo img{max-height:56px;width:auto}
.nav-toggle{display:none;background:none;border:1px solid var(--line);
  border-radius:4px;padding:8px 11px;font-size:20px;line-height:1;cursor:pointer}
nav.main ul{list-style:none;display:flex;align-items:center;gap:4px;margin:0;padding:0}
nav.main a{display:block;padding:10px 13px;color:var(--ink);font-weight:600;
  font-size:15px;border-radius:4px}
nav.main a:hover,nav.main li.active>a{color:var(--accent);background:var(--inox-1)}
nav.main li{position:relative}
nav.main .sub{display:none;position:absolute;left:0;top:100%;background:#fff;
  border:1px solid var(--line);box-shadow:var(--shadow);min-width:250px;
  flex-direction:column;gap:0;padding:6px 0;border-radius:var(--radius)}
nav.main li:hover>.sub{display:flex}
nav.main .sub a{padding:9px 16px;font-weight:500;border-radius:0}
.has-sub>a::after{content:"▾";margin-left:6px;font-size:11px}

/* ---------- slideshow ---------- */
.slideshow{position:relative;overflow:hidden;background:#0c1116}
.slides{position:relative;height:clamp(320px,52vw,600px)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .9s ease;
  display:flex;align-items:center}
.slide.on{opacity:1}
.slide img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.slide::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(8,12,16,.78) 0%,rgba(8,12,16,.45) 55%,rgba(8,12,16,.2) 100%)}
.slide .caption{position:relative;z-index:2;color:#fff;max-width:var(--maxw);
  margin:0 auto;padding:0 26px;width:100%}
.slide .caption h2{font-size:clamp(24px,3.4vw,42px);margin:0 0 10px;line-height:1.2}
.slide .caption p{font-size:clamp(15px,1.5vw,20px);margin:0 0 6px;color:#e4eaef}
.slide .caption .btn{margin-top:18px}
.sl-nav{position:absolute;top:50%;transform:translateY(-50%);z-index:5;
  background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.35);
  color:#fff;width:46px;height:46px;border-radius:50%;font-size:22px;cursor:pointer}
.sl-nav:hover{background:rgba(255,255,255,.32)}
.sl-prev{left:16px} .sl-next{right:16px}
.dots{position:absolute;bottom:18px;left:0;right:0;z-index:5;display:flex;
  justify-content:center;gap:9px}
.dots button{width:11px;height:11px;border-radius:50%;border:0;cursor:pointer;
  background:rgba(255,255,255,.45)}
.dots button.on{background:#fff;transform:scale(1.2)}

/* ---------- generic ---------- */
.section{padding:64px 0}
.section.alt{background:var(--inox-1)}
.section-head{text-align:center;max-width:760px;margin:0 auto 42px}
.section-head h2{font-size:clamp(23px,2.7vw,33px);margin:0 0 12px}
.section-head p{color:var(--ink-2);margin:0}
.rule{width:64px;height:3px;background:var(--accent);margin:14px auto 0;border-radius:2px}
h1,h2,h3,h4{line-height:1.25}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:12px 24px;
  border-radius:var(--radius);font-weight:600;border:0;cursor:pointer;font-size:15.5px}
.btn:hover{background:var(--accent-d);color:#fff}
.btn.ghost{background:transparent;border:2px solid #fff;color:#fff}
.btn.ghost:hover{background:#fff;color:var(--ink)}

.page-head{background:var(--ink);color:#fff;padding:44px 0}
.page-head h1{margin:0;font-size:clamp(24px,3vw,34px)}
.crumbs{margin-top:8px;font-size:14px;color:#a9b6c2}
.crumbs a{color:#cfe0ee}

.grid{display:grid;gap:26px}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow)}
.card h3{margin:0 0 10px;font-size:19px}
.card p{margin:0;color:var(--ink-2);font-size:15.5px}
.card .ico{width:48px;height:48px;border-radius:8px;background:var(--inox-1);
  color:var(--accent);display:flex;align-items:center;justify-content:center;
  font-size:23px;margin-bottom:14px}

.chips{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.chips span{background:#fff;border:1px solid var(--line);border-radius:40px;
  padding:9px 18px;font-weight:600;font-size:14.5px;box-shadow:var(--shadow)}

/* ---------- product blocks ---------- */
.prod{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  margin-bottom:34px;background:#fff;box-shadow:var(--shadow)}
.prod .head{padding:20px 24px;background:var(--inox-1);border-bottom:1px solid var(--line)}
.prod .head h3{margin:0 0 6px;font-size:20px;color:var(--accent-d)}
.prod .head p{margin:0;color:var(--ink-2);font-size:15.5px}
.gal{display:grid;grid-template-columns:repeat(auto-fill,minmax(215px,1fr));
  gap:12px;padding:18px}
.gal a{display:block;overflow:hidden;border-radius:4px;background:var(--inox-2);
  aspect-ratio:4/3}
.gal img{width:100%;height:100%;object-fit:cover;transition:transform .45s ease}
.gal a:hover img{transform:scale(1.07)}
.note{background:var(--inox-1);border-left:4px solid var(--accent);
  padding:18px 22px;border-radius:4px;margin:22px 0;color:var(--ink-2)}

/* masonry-ish works gallery */
.works{columns:4;column-gap:12px}
.works a{display:block;margin:0 0 12px;break-inside:avoid;border-radius:4px;
  overflow:hidden;background:var(--inox-2)}
.works img{width:100%;transition:transform .45s ease,filter .3s}
.works a:hover img{transform:scale(1.05);filter:brightness(1.06)}

/* ---------- lightbox ---------- */
.lb{position:fixed;inset:0;background:rgba(8,11,15,.94);z-index:200;
  display:none;align-items:center;justify-content:center}
.lb.on{display:flex}
.lb img{max-width:92vw;max-height:82vh;object-fit:contain;border-radius:4px}
.lb .cap{position:absolute;bottom:24px;left:0;right:0;text-align:center;
  color:#dfe6ec;font-size:14.5px;padding:0 20px}
.lb button{position:absolute;background:rgba(255,255,255,.13);
  border:1px solid rgba(255,255,255,.3);color:#fff;width:48px;height:48px;
  border-radius:50%;font-size:24px;cursor:pointer}
.lb button:hover{background:rgba(255,255,255,.3)}
.lb .x{top:20px;right:20px}
.lb .p{left:20px;top:50%;transform:translateY(-50%)}
.lb .n{right:20px;top:50%;transform:translateY(-50%)}

/* ---------- contact ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:36px}
.info li{list-style:none;display:flex;gap:14px;margin-bottom:20px}
.info ul{padding:0;margin:0}
.info .ico{flex:0 0 42px;height:42px;border-radius:8px;background:var(--inox-1);
  color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:19px}
.info strong{display:block;font-size:14px;color:var(--ink-2);font-weight:600}
form label{display:block;font-weight:600;font-size:14.5px;margin:0 0 6px}
form .row{margin-bottom:16px}
form input,form textarea{width:100%;padding:12px 14px;border:1px solid var(--line);
  border-radius:var(--radius);font:inherit;background:#fff}
form input:focus,form textarea:focus{outline:2px solid var(--accent);border-color:transparent}
form textarea{min-height:150px;resize:vertical}
.captcha{display:flex;align-items:center;gap:12px;background:var(--inox-1);
  border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.captcha .q{font-weight:700;font-size:17px;white-space:nowrap}
.captcha input{max-width:110px}
.msg{padding:13px 16px;border-radius:var(--radius);margin-bottom:16px;display:none}
.msg.ok{background:#e6f6ec;color:#1c6b3a;border:1px solid #b7e2c6;display:block}
.msg.err{background:#fdeaea;color:#8f2020;border:1px solid #f3c4c4;display:block}
.map{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  margin-top:44px;line-height:0}
.map iframe{width:100%;height:430px;border:0}

/* ---------- footer ---------- */
footer.site{background:var(--ink);color:#a9b6c2;padding:52px 0 0;font-size:15px}
footer.site h4{color:#fff;font-size:17px;margin:0 0 16px}
footer.site a{color:#c9d2db}
footer.site a:hover{color:#fff}
footer.site ul{list-style:none;padding:0;margin:0}
footer.site li{margin-bottom:9px}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:36px;padding-bottom:36px}
.f-logo img{max-height:64px;margin-bottom:16px}
.f-social{display:flex;gap:10px;margin-top:16px}
.f-social a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,.09);
  display:flex;align-items:center;justify-content:center}
.f-social a:hover{background:var(--accent)}
.copy{border-top:1px solid rgba(255,255,255,.11);padding:18px 0;display:flex;
  justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;font-size:14px}
.copy img{max-height:26px;display:inline-block}
.copy .pw{display:flex;align-items:center;gap:8px}

.up{position:fixed;right:20px;bottom:20px;width:46px;height:46px;border-radius:50%;
  background:var(--accent);color:#fff;border:0;cursor:pointer;font-size:20px;
  display:none;z-index:80;box-shadow:var(--shadow)}
.up.on{display:block}

/* ---------- responsive ---------- */
@media(max-width:980px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .works{columns:3}
  .contact-grid{grid-template-columns:1fr}
  .f-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .nav-toggle{display:block}
  nav.main{position:absolute;left:0;right:0;top:100%;background:#fff;
    border-top:1px solid var(--line);box-shadow:var(--shadow);display:none}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;align-items:stretch;padding:8px 0}
  nav.main .sub{position:static;display:flex;border:0;box-shadow:none;
    background:var(--inox-1);border-radius:0}
  nav.main li:hover>.sub{display:flex}
  .site-header .wrap{position:relative}
  .g3,.g2,.g4{grid-template-columns:1fr}
  .works{columns:2}
  .f-grid{grid-template-columns:1fr}
  .topbar .wrap{justify-content:center;font-size:13px}
  .section{padding:46px 0}
}