:root{
  --paper:#EDEAE3;
  --paper2:#E3DFD6;
  --ink:#1B1D1F;
  --ink2:#4A4E52;
  --steel:#6B7176;
  --line:#C9C3B8;
  --red:#B5121B;
  --red-d:#8E0E15;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:"Golos Text",system-ui,sans-serif;font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3{font-family:"Oswald",system-ui,sans-serif;font-weight:600;line-height:1.05;margin:0}
h1{font-weight:700;letter-spacing:-.01em}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{width:min(1120px,92vw);margin:0 auto}
::selection{background:var(--red);color:#fff}

.masthead{position:sticky;top:0;z-index:40;background:var(--paper);
  border-bottom:2px solid var(--ink)}
.masthead .wrap{display:flex;align-items:center;justify-content:space-between;
  min-height:60px;gap:1rem}
.logo{font-family:"Oswald";font-weight:700;font-size:21px;letter-spacing:.06em;
  display:flex;flex-direction:column;line-height:1}
.logo span{font-family:"Golos Text";font-weight:400;font-size:10.5px;letter-spacing:.02em;
  color:var(--steel);margin-top:3px}
.mainnav{display:flex;align-items:center;gap:1.5rem}
.mainnav a{font-family:"Oswald";font-weight:500;font-size:15px;color:var(--ink2)}
.mainnav a:hover{color:var(--red)}
.callbtn{background:var(--red);color:#fff!important;padding:.5rem .95rem;
  font-weight:600;letter-spacing:.02em}
.callbtn:hover{background:var(--red-d)}

.btn-solid,.btn-line{display:inline-block;font-family:"Oswald";font-weight:600;
  font-size:16px;letter-spacing:.02em;padding:.78rem 1.4rem;border:2px solid var(--ink)}
.btn-solid{background:var(--red);border-color:var(--red);color:#fff}
.btn-solid:hover{background:var(--red-d);border-color:var(--red-d)}
.btn-line{background:transparent;color:var(--ink)}
.btn-line:hover{background:var(--ink);color:var(--paper)}

.hero{position:relative;border-bottom:2px solid var(--ink);overflow:hidden;
  background:
    linear-gradient(var(--line) 1px,transparent 1px) 0 0/100% 64px,
    linear-gradient(90deg,var(--line) 1px,transparent 1px) 0 0/64px 100%,
    var(--paper)}
.grid-marks{position:absolute;inset:0;pointer-events:none}
.mk{position:absolute;font:11px/1 ui-monospace,SFMono-Regular,Menlo,monospace;
  color:var(--steel)}
.mk-x{top:8px;left:calc(var(--c)*25% + 10px)}
.mk-y{left:8px;top:calc(18% + var(--r)*26%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center;
  padding:5.5rem 0 4.5rem;position:relative}
.tag{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12.5px;
  color:var(--red);margin:0 0 1.1rem;letter-spacing:.01em}
.hero h1{font-size:clamp(2.5rem,5.3vw,4rem)}
.lede{font-size:19px;color:var(--ink2);max-width:34ch;margin:1.3rem 0 1.8rem}
.hero-act{display:flex;gap:.9rem;flex-wrap:wrap}
.spec-row{display:flex;gap:2.2rem;margin:2.6rem 0 0;padding-top:1.4rem;
  border-top:1px solid var(--line)}
.spec-row div{display:flex;flex-direction:column}
.spec-row dt{font-family:"Oswald";font-weight:700;font-size:26px;color:var(--ink)}
.spec-row dd{margin:.2rem 0 0;font-size:13px;color:var(--steel);max-width:14ch}
.hero-fig{margin:0;position:relative}
.hero-fig img{width:100%;filter:drop-shadow(0 18px 30px rgba(0,0,0,.22))}
.hero-fig figcaption{font:11px/1.3 ui-monospace,SFMono-Regular,Menlo,monospace;
  color:var(--steel);margin-top:.8rem;text-align:right}

.band{padding:4.5rem 0;border-bottom:1px solid var(--line)}
.band-head{max-width:62ch;margin-bottom:2.6rem}
.band-head h2{font-size:clamp(1.8rem,3.4vw,2.5rem)}
.band-head p{color:var(--ink2);margin:.9rem 0 0}

.objekty{background:var(--paper2)}
.obj-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line)}
.obj{background:var(--paper2);padding:1.7rem 1.5rem 1.5rem;display:flex;
  flex-direction:column;gap:.5rem;transition:background .18s ease,color .18s ease}
.obj-no{font:12px/1 ui-monospace,monospace;color:var(--steel)}
.obj h3{font-size:22px}
.obj p{margin:0;font-size:14.5px;color:var(--ink2)}
.obj-lead{margin-top:auto;padding-top:.9rem;font-family:"Oswald";font-weight:600;
  font-size:14px;color:var(--red)}
.obj:hover{background:var(--ink);color:var(--paper)}
.obj:hover .obj-no,.obj:hover p{color:#B9BDC0}
.obj:hover .obj-lead{color:#fff}

.how-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:3rem;align-items:start}
.how-intro h2{font-size:clamp(1.8rem,3.4vw,2.5rem)}
.how-intro p{color:var(--ink2);margin:1rem 0 0}
.layers{display:flex;flex-direction:column}
.layer{display:grid;grid-template-columns:auto 1fr;gap:1.3rem;padding:1.4rem 0;
  border-top:1px solid var(--line)}
.layer:first-child{border-top:none;padding-top:0}
.layer-no{font-family:"Oswald";font-weight:700;font-size:34px;color:var(--red);line-height:1}
.layer h3{font-size:20px;margin-bottom:.3rem}
.layer p{margin:0;color:var(--ink2);font-size:15.5px}

.prod-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1.6rem}
.prod{display:grid;grid-template-columns:120px 1fr;gap:1.4rem;border:1px solid var(--line);
  background:var(--paper);padding:1.4rem;transition:border-color .18s,transform .18s}
.prod:hover{border-color:var(--ink);transform:translateY(-2px)}
.prod-img{background:var(--paper2);display:flex;align-items:center;justify-content:center;
  padding:.6rem}
.prod-body h3{font-size:21px}
.prod-tex{font:12px/1 ui-monospace,monospace;color:var(--steel);margin:.3rem 0 .6rem}
.prod-body p{margin:0;font-size:14.5px;color:var(--ink2)}
.prod-pal{display:flex;gap:4px;margin:.9rem 0 .7rem}
.prod-pal span{width:18px;height:18px;border:1px solid rgba(0,0,0,.15)}
.prod-more{font-family:"Oswald";font-weight:600;font-size:13.5px;color:var(--red)}

.dolgo{background:var(--ink);color:var(--paper);border-bottom:none}
.dolgo-grid{display:grid;grid-template-columns:auto 1fr;gap:3.5rem;align-items:center}
.datum{display:flex;align-items:baseline;gap:.4rem;color:var(--red)}
.datum .big{font-family:"Oswald";font-weight:700;font-size:clamp(7rem,15vw,12rem);
  line-height:.8;font-variant-numeric:tabular-nums}
.datum .unit{font-family:"Oswald";font-weight:500;font-size:2rem;color:var(--paper)}
.dolgo-text h2{font-size:clamp(1.8rem,3.4vw,2.4rem)}
.dolgo-text p{color:#C7C9CB;margin:1rem 0 1.3rem}
.ticks{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.6rem}
.ticks li{position:relative;padding-left:1.6rem;color:#DADCDE;font-size:15.5px}
.ticks li::before{content:"";position:absolute;left:0;top:.5em;width:10px;height:10px;
  background:var(--red)}

.qa-list{border-top:1px solid var(--line);max-width:80ch}
.qa{border-bottom:1px solid var(--line)}
.qa summary{font-family:"Oswald";font-weight:600;font-size:19px;padding:1.2rem 2.2rem 1.2rem 0;
  cursor:pointer;position:relative;list-style:none}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{content:"+";position:absolute;right:.3rem;top:1rem;font-size:24px;
  color:var(--red);font-family:"Oswald"}
.qa[open] summary::after{content:"–"}
.qa p{margin:0 0 1.3rem;color:var(--ink2);max-width:72ch}

.contact{background:var(--paper2);border-bottom:none}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:3.5rem}
.contact-info h2{font-size:clamp(1.8rem,3.4vw,2.4rem)}
.contact-info>p{color:var(--ink2);margin:1rem 0 1.8rem;max-width:40ch}
.contact-lines{list-style:none;padding:0;margin:0}
.contact-lines li{display:grid;grid-template-columns:90px 1fr;gap:1rem;padding:.7rem 0;
  border-top:1px solid var(--line);font-size:15.5px}
.contact-lines span{font-family:"Oswald";font-weight:500;color:var(--steel);font-size:13px;
  padding-top:2px}
.contact-lines a:hover{color:var(--red)}
.contact-form{display:flex;flex-direction:column;gap:1rem;background:var(--paper);
  border:2px solid var(--ink);padding:1.8rem}
.contact-form label{display:flex;flex-direction:column;gap:.4rem;font-size:13.5px;
  font-family:"Oswald";font-weight:500;color:var(--ink2)}
.contact-form input,.contact-form select{font-family:"Golos Text";font-size:16px;
  padding:.7rem .8rem;border:1px solid var(--steel);background:var(--paper);color:var(--ink)}
.contact-form input:focus,.contact-form select:focus{outline:2px solid var(--red);
  border-color:var(--red)}
.contact-form button{background:var(--red);color:#fff;border:none;font-family:"Oswald";
  font-weight:600;font-size:17px;padding:.9rem;cursor:pointer;letter-spacing:.02em}
.contact-form button:hover{background:var(--red-d)}
.contact-form small{color:var(--steel);font-size:12px;line-height:1.4}

.colophon{background:var(--ink);color:var(--paper);padding:3rem 0 2rem}
.co-brand{display:flex;gap:1.5rem;align-items:baseline;flex-wrap:wrap;
  padding-bottom:1.8rem;border-bottom:1px solid #3A3E42;margin-bottom:1.8rem}
.co-logo{font-family:"Oswald";font-weight:700;font-size:22px;letter-spacing:.06em}
.co-brand p{margin:0;color:var(--steel);font-size:13px;max-width:48ch}
.co-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;font-size:14.5px}
.co-cols b{display:block;font-family:"Oswald";font-weight:500;font-size:12px;
  color:var(--steel);margin-bottom:.5rem}
.co-cols a:hover{color:var(--red)}
.co-foot{margin-top:1.8rem;padding-top:1.4rem;border-top:1px solid #3A3E42;
  color:var(--steel);font-size:12px}

.pdp{padding:2.5rem 0 4rem}
.crumbs{font:12px/1 ui-monospace,monospace;color:var(--steel);margin-bottom:2rem}
.crumbs a:hover{color:var(--red)}
.pdp-grid{display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:start}
.pdp-stage{background:var(--paper2);border:1px solid var(--line);padding:2rem;
  display:flex;align-items:center;justify-content:center;min-height:360px}
.pdp-stage img{max-height:400px;width:auto}
.pdp-thumbs{display:flex;gap:.6rem;flex-wrap:wrap;margin-top:.8rem}
.thumb{width:66px;height:66px;border:1px solid var(--line);background:var(--paper);
  padding:4px;cursor:pointer}
.thumb.on{border-color:var(--red)}
.thumb img{width:100%;height:100%;object-fit:contain}
.pdp-info h1{font-size:clamp(2rem,4vw,2.7rem)}
.pdp-short{font-size:18px;color:var(--ink2);margin:1rem 0 1.3rem}
.pdp-uses{font-size:14.5px;padding:.8rem 1rem;background:var(--paper2);
  border-left:3px solid var(--red);margin-bottom:1.6rem}
.specs{width:100%;border-collapse:collapse;margin:0 0 2rem}
.specs th,.specs td{text-align:left;padding:.7rem 0;border-bottom:1px solid var(--line);
  font-size:15px;vertical-align:top}
.specs th{font-family:"Oswald";font-weight:500;color:var(--steel);width:40%;font-size:14px}
.pdp-info h2{font-size:20px;margin:0 0 1rem}
.palette{list-style:none;padding:0;margin:0 0 2rem;display:grid;
  grid-template-columns:1fr 1fr;gap:.6rem}
.palette li{display:flex;align-items:center;gap:.6rem;font-size:14px}
.chip{width:22px;height:22px;border:1px solid rgba(0,0,0,.2);flex:none}
.pdp-cta{display:flex;gap:.9rem;flex-wrap:wrap}
.pdp-long{margin-top:3rem;padding-top:2.5rem;border-top:1px solid var(--line);max-width:74ch}
.pdp-long h2{font-size:22px;margin-bottom:1rem}
.pdp-long p{color:var(--ink2)}

@media(max-width:860px){
  .mainnav{gap:.9rem}.mainnav a:not(.callbtn){display:none}
  .hero-grid,.how-grid,.prod-grid,.dolgo-grid,.contact-grid,.pdp-grid,.co-cols,
  .obj-grid{grid-template-columns:1fr}
  .hero-grid{gap:2rem;padding:3rem 0}
  .hero-fig{max-width:300px;margin:0 auto}
  .obj-grid{gap:1px}
  .spec-row{flex-wrap:wrap;gap:1.4rem}
  .datum{justify-content:center}
  .palette{grid-template-columns:1fr}
  .prod{grid-template-columns:90px 1fr}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto}}