/* Престиж-Упак — design system (impeccable redesign 2026). OKLCH, committed engineering-blue + amber. */
:root{
  --paper:oklch(0.985 0.004 240);
  --surface:oklch(0.965 0.006 240);
  --surface-2:oklch(0.945 0.007 240);
  --ink:oklch(0.25 0.03 255);
  --muted:oklch(0.47 0.02 255);
  --line:oklch(0.90 0.008 245);
  --line-strong:oklch(0.83 0.01 245);
  --blue:oklch(0.46 0.10 252);
  --blue-2:oklch(0.40 0.095 253);
  --blue-deep:oklch(0.30 0.075 254);
  --blue-ink:oklch(0.21 0.05 256);
  --amber:oklch(0.76 0.145 68);
  --amber-deep:oklch(0.70 0.155 62);
  --on-blue:oklch(0.97 0.01 245);
  --on-blue-dim:oklch(0.86 0.02 245);
  --fh:'Geologica',system-ui,-apple-system,sans-serif;
  --fb:'Golos Text',system-ui,-apple-system,sans-serif;
  --r-sm:7px; --r:10px; --r-lg:14px;
  --sh-card:0 14px 34px -20px oklch(0.30 0.06 255 / .55);
  --wrap:1180px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--fb);color:var(--ink);background:var(--paper);line-height:1.6;
  font-size:clamp(15px,0.9rem + 0.2vw,17px);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{display:block;max-width:100%;height:auto}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--blue-2)}
h1,h2,h3,h4{font-family:var(--fh);line-height:1.1;letter-spacing:-0.015em;font-weight:700;color:var(--blue-ink)}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:3px}
.wrap{width:min(var(--wrap),100% - 3rem);margin-inline:auto}
.vh{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;z-index:100;background:var(--amber);color:var(--blue-ink);
  padding:.7rem 1.1rem;font-family:var(--fh);font-weight:600;border-radius:0 0 var(--r) 0}
.skip:focus{left:0}

/* buttons */
.btn{font-family:var(--fh);font-weight:600;font-size:15px;padding:.66rem 1.2rem;border-radius:var(--r-sm);
  display:inline-flex;align-items:center;gap:.5rem;cursor:pointer;border:0;transition:transform .15s var(--ease),background .15s,box-shadow .15s;line-height:1.1}
.btn-amber{background:var(--amber);color:var(--blue-ink);box-shadow:0 1px 0 oklch(0.6 0.14 60)}
.btn-amber:hover{background:var(--amber-deep);color:var(--blue-ink);transform:translateY(-1px)}
.btn-blue{background:var(--blue);color:var(--on-blue)}
.btn-blue:hover{background:var(--blue-2);color:var(--on-blue);transform:translateY(-1px)}
.btn-ghost{border:1.5px solid color-mix(in oklch,var(--on-blue) 55%,transparent);color:var(--on-blue)}
.btn-ghost:hover{background:color-mix(in oklch,var(--on-blue) 12%,transparent);color:var(--on-blue)}
.btn-outline{border:1.5px solid var(--line-strong);color:var(--blue);background:transparent}
.btn-outline:hover{border-color:var(--blue);background:var(--surface)}

.eyebrow{font-family:var(--fh);font-weight:600;font-size:13px;letter-spacing:.16em;text-transform:uppercase}
.section{padding:clamp(2.8rem,6vw,5rem) 0}
.section-tint{background:var(--surface)}
.lead{font-size:clamp(1rem,0.3vw + 1rem,1.2rem);color:var(--muted)}

/* header */
.top{position:sticky;top:0;z-index:40;background:color-mix(in oklch,var(--paper) 86%,transparent);
  backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:1.6rem;min-height:74px}
.brand{display:flex;align-items:center;gap:.7rem;flex-shrink:0}
.brand svg{width:40px;height:40px;flex-shrink:0}
.brand .txt b{font-family:var(--fh);font-weight:800;font-size:18px;letter-spacing:.01em;color:var(--blue-ink);display:block;line-height:1}
.brand .txt span{font-size:11px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}
.nav{display:flex;gap:1.5rem;margin-left:auto;align-items:center}
.nav a{font-family:var(--fb);font-weight:500;font-size:15px;color:var(--ink);padding:.5rem 0;position:relative}
.nav a:hover,.nav a[aria-current]{color:var(--blue)}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-1px;height:2px;background:var(--amber);transition:right .25s var(--ease)}
.nav a:hover::after,.nav a[aria-current]::after{right:0}
.top .phone{font-family:var(--fh);font-weight:600;font-size:15px;white-space:nowrap;color:var(--blue-ink)}
.top .phone:hover{color:var(--blue)}
.burger{display:none;margin-left:auto;background:transparent;border:0;width:44px;height:44px;cursor:pointer;padding:10px}
.burger span{display:block;height:2.5px;background:var(--blue-ink);border-radius:2px;margin:5px 0;transition:.25s var(--ease)}
.burger[aria-expanded=true] span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.burger[aria-expanded=true] span:nth-child(2){opacity:0}
.burger[aria-expanded=true] span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

@media(max-width:900px){
  .nav{position:fixed;inset:74px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;
    background:var(--paper);border-bottom:1px solid var(--line);padding:.5rem 0;margin:0;
    box-shadow:var(--sh-card);transform:translateY(-12px);opacity:0;visibility:hidden;transition:.22s var(--ease)}
  .nav[data-open=true]{transform:none;opacity:1;visibility:visible}
  .nav a{padding:.85rem 1.5rem;font-size:16px;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .nav .btn{margin:.7rem 1.5rem}
  .top .phone{margin-left:auto}
  .burger{display:block}
  .top .wrap{gap:.8rem}
}
@media(max-width:520px){ .top .phone{font-size:14px} .brand .txt b{font-size:16px} }

/* hero */
.hero{position:relative;background:var(--blue-deep);color:var(--on-blue);overflow:hidden;isolation:isolate}
.hero>img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2;filter:saturate(.9)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,oklch(0.20 0.055 256 / .96) 0%,oklch(0.24 0.06 256 / .82) 44%,oklch(0.28 0.07 256 / .5) 100%)}
.hero .wrap{padding:clamp(2.8rem,7vw,6rem) 0 clamp(2rem,4vw,3rem)}
.hero .eyebrow{color:var(--amber);margin-bottom:1.1rem}
.hero h1{font-size:clamp(2rem,3vw + 1rem,3.9rem);font-weight:800;max-width:17ch;letter-spacing:-0.02em;color:var(--on-blue)}
.hero .lead{margin-top:1.3rem;font-size:clamp(1rem,0.3vw + 1rem,1.22rem);max-width:54ch;color:var(--on-blue-dim)}
.hero .cta{margin-top:2rem;display:flex;gap:.9rem;flex-wrap:wrap}
.trust{margin-top:clamp(2.2rem,5vw,3.6rem);display:flex;flex-wrap:wrap;gap:0 2rem;
  border-top:1px solid color-mix(in oklch,var(--on-blue) 22%,transparent);padding-top:1.1rem}
.trust b{font-family:var(--fh);font-weight:600;font-size:14px;letter-spacing:.01em;color:var(--on-blue);
  display:flex;align-items:center;gap:.55rem;padding:.4rem 0}
.trust b::before{content:"";width:7px;height:7px;background:var(--amber);border-radius:2px;transform:rotate(45deg);flex-shrink:0}

/* page header (interior pages) */
.pagehead{background:var(--blue-deep);color:var(--on-blue);padding:clamp(2rem,4vw,3.2rem) 0 clamp(1.6rem,3vw,2.4rem)}
.pagehead .crumbs{font-size:13px;color:var(--on-blue-dim);margin-bottom:.7rem;font-family:var(--fh);letter-spacing:.02em}
.pagehead .crumbs a{color:var(--on-blue-dim)}.pagehead .crumbs a:hover{color:var(--amber)}
.pagehead h1{color:var(--on-blue);font-size:clamp(1.7rem,2vw + 1rem,2.7rem)}

/* reasons */
.reasons h2{font-size:clamp(1.5rem,1.4vw + 1rem,2.1rem)}
.reasons .sub{color:var(--muted);margin-top:.5rem;max-width:58ch}
.grid4{margin-top:2.4rem;display:grid;grid-template-columns:repeat(4,1fr);gap:0 1.5rem}
.reason{padding:1.4rem 0 0;border-top:2px solid var(--blue)}
.reason .n{font-family:var(--fh);font-weight:700;font-size:13px;color:var(--amber-deep);letter-spacing:.05em}
.reason h3{font-size:1.14rem;margin:.7rem 0 .5rem}
.reason p{font-size:.93rem;color:var(--muted);line-height:1.55}
@media(max-width:820px){.grid4{grid-template-columns:1fr 1fr;gap:0 1.4rem}}
@media(max-width:480px){.grid4{grid-template-columns:1fr}}

/* section heading with link */
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:1rem;margin-bottom:1.8rem;flex-wrap:wrap}
.sec-head h2{font-size:clamp(1.5rem,1.4vw + 1rem,2.1rem)}
.sec-head .more{font-family:var(--fh);font-weight:600;font-size:14px;color:var(--blue);white-space:nowrap}

/* product cards */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:1.2rem}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;transition:transform .18s var(--ease),box-shadow .18s,border-color .18s}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh-card);border-color:var(--line-strong)}
.card .ph{aspect-ratio:4/3;background:#fff;display:grid;place-items:center;overflow:hidden;border-bottom:1px solid var(--line)}
.card .ph img{width:100%;height:100%;object-fit:contain;padding:.9rem}
.card .body{padding:1rem 1.1rem 1.15rem;display:flex;flex-direction:column;gap:.35rem;flex:1}
.card h3{font-size:1.05rem}
.card p{font-size:.87rem;color:var(--muted)}
.card .tag{margin-top:auto;font-family:var(--fh);font-weight:600;font-size:12px;color:var(--blue);letter-spacing:.03em;padding-top:.5rem}

/* prose (content/literature/news bodies) */
.layout{display:grid;grid-template-columns:1fr;gap:2rem}
.prose{max-width:72ch;font-size:1.02rem}
.prose>*+*{margin-top:1rem}
.prose h1,.prose h2{font-size:1.5rem;margin-top:2rem}
.prose h3{font-size:1.2rem;margin-top:1.6rem;color:var(--blue-2)}
.prose p{color:var(--ink)}
.prose a{text-decoration:underline;text-underline-offset:2px}
.prose ul,.prose ol{padding-left:1.3rem}
.prose li{margin-top:.35rem}
.prose li::marker{color:var(--blue)}
.prose img{border-radius:var(--r);margin:.5rem 0;border:1px solid var(--line)}
.prose table{border-collapse:collapse;width:100%;margin:1rem 0;font-size:.95rem;display:block;overflow-x:auto}
.prose td,.prose th{border:1px solid var(--line);padding:.6rem .8rem;text-align:left;vertical-align:top}
.prose tr:nth-child(even) td{background:var(--surface)}
.prose blockquote{border-top:2px solid var(--blue);background:var(--surface);padding:1rem 1.2rem;border-radius:0 0 var(--r) var(--r)}

/* documents (literature list) */
.doclist{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1rem;margin-top:1.5rem}
.doc{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:1.1rem 1.2rem;transition:.18s var(--ease)}
.doc:hover{border-color:var(--blue);transform:translateY(-2px);box-shadow:var(--sh-card)}
.doc b{font-family:var(--fh);font-size:1.05rem;color:var(--blue-ink);display:block}
.doc span{font-size:.86rem;color:var(--muted)}

/* catalog item detail */
.item-detail{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:2.5rem;align-items:start}
.item-media .main-img{width:100%;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);object-fit:contain;aspect-ratio:4/3;padding:1rem}
.item-thumbs{display:flex;gap:.6rem;margin-top:.7rem;flex-wrap:wrap}
.item-thumbs a{width:74px;height:74px;border:1px solid var(--line);border-radius:var(--r-sm);overflow:hidden;background:#fff}
.item-thumbs img{width:100%;height:100%;object-fit:contain;padding:.3rem}
.item-info h1{font-size:clamp(1.5rem,1.5vw + 1rem,2.2rem);margin-bottom:.4rem}
.item-info .short{color:var(--muted);margin-bottom:1.2rem}
@media(max-width:760px){.item-detail{grid-template-columns:1fr;gap:1.5rem}}

/* other products rail */
.rail{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--line)}
.rail h2{font-size:1.3rem;margin-bottom:1.2rem}

/* gallery */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.9rem}
.gallery a{display:block;border-radius:var(--r);overflow:hidden;background:var(--surface-2);aspect-ratio:1;position:relative}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .35s var(--ease)}
.gallery a:hover img{transform:scale(1.05)}

/* news archive */
.news-list{display:flex;flex-direction:column;gap:0}
.news-item{padding:1.5rem 0;border-top:1px solid var(--line);display:grid;grid-template-columns:130px 1fr;gap:1.5rem}
.news-item time{font-family:var(--fh);font-weight:600;color:var(--amber-deep);font-size:.9rem}
.news-item h3{font-size:1.15rem;margin-bottom:.5rem}
.news-item .body{color:var(--muted);font-size:.95rem}
@media(max-width:600px){.news-item{grid-template-columns:1fr;gap:.4rem}}

/* contacts */
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:2.5rem;align-items:start}
.contact-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.5rem}
.contact-card dt{font-family:var(--fh);font-weight:600;color:var(--blue);font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;margin-top:1rem}
.contact-card dd{font-size:1.1rem;margin-top:.15rem}
.contact-card dt:first-child{margin-top:0}
@media(max-width:760px){.contact-grid{grid-template-columns:1fr;gap:1.5rem}}

/* footer */
.foot{background:var(--blue-deep);color:var(--on-blue-dim);padding:clamp(2.5rem,5vw,3.8rem) 0 2rem;margin-top:clamp(3rem,6vw,5rem)}
.foot .cols{display:grid;grid-template-columns:1.4fr 1fr 1.2fr;gap:2rem}
.foot h4{color:var(--on-blue);font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;margin-bottom:.9rem;font-family:var(--fh)}
.foot a{color:var(--on-blue-dim)}.foot a:hover{color:var(--amber)}
.foot .fnav{display:flex;flex-direction:column;gap:.5rem}
.foot .fbrand b{font-family:var(--fh);font-weight:800;color:var(--on-blue);font-size:1.1rem;display:block;margin-bottom:.5rem}
.foot .phone-lg{font-family:var(--fh);font-weight:700;font-size:1.3rem;color:var(--on-blue)}
.foot .legal{margin-top:2rem;padding-top:1.4rem;border-top:1px solid color-mix(in oklch,var(--on-blue) 18%,transparent);
  font-size:.82rem;display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;color:color-mix(in oklch,var(--on-blue) 60%,transparent)}
@media(max-width:760px){.foot .cols{grid-template-columns:1fr;gap:1.6rem}}

/* 404 */
.err{text-align:center;padding:clamp(3rem,10vw,7rem) 0}
.err .code{font-family:var(--fh);font-weight:800;font-size:clamp(4rem,15vw,8rem);color:var(--blue);line-height:1}
.err h1{margin:.5rem 0 1rem}

@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{
  .top,.foot,.hero .cta,.burger,.rail{display:none}
  body{color:#000;background:#fff;font-size:11pt}
  a{color:#000;text-decoration:underline}
  .pagehead,.hero{background:#fff;color:#000}
  .pagehead h1,.hero h1{color:#000}
}

/* contacts map */
.contact-map{display:block;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;background:var(--surface)}
.contact-map img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.contact-map:hover img{transform:scale(1.03)}