/* ============================================================
   Митрофановский кварцевый порфир — промышленный минимализм
   Дизайн-система прототипа
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Oswald:wght@500;600;700&display=swap');

:root{
  --graphite:#23282B; --steel:#3C4348; --terra:#B35A38; --terra-d:#8F4327;
  --stone:#CDB99A; --stone-l:#E4D8C2; --paper:#F4F1EB; --line:#E3DCD0;
  --ink:#23282B; --muted:#7C7A73; --light:#ECE7DE;
  --maxw:1160px; --r:8px;
  --sh:0 6px 22px rgba(35,40,43,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:Inter,system-ui,sans-serif;line-height:1.55;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;margin:0;line-height:1.1}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.num{font-family:Oswald;font-weight:600;letter-spacing:.01em}
.label{font-size:11px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--terra)}
.eyebrow{display:flex;align-items:baseline;gap:14px;margin-bottom:26px}
.eyebrow .n{font-family:Oswald;font-weight:600;color:var(--terra);font-size:17px}
.eyebrow h2{font-size:28px}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:14px;
  padding:13px 22px;border-radius:4px;border:1px solid transparent;cursor:pointer;transition:.15s;white-space:nowrap}
.btn-pri{background:var(--terra);color:#fff}
.btn-pri:hover{background:var(--terra-d)}
.btn-ghost{background:transparent;color:var(--graphite);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--graphite)}
.btn-dark{background:var(--graphite);color:#fff}
.btn-dark:hover{background:#000}
.btn-lg{padding:16px 30px;font-size:15px}

/* ── Icons ── */
.ic{width:40px;height:40px;fill:none;stroke:currentColor;stroke-width:1.7;
  stroke-linecap:round;stroke-linejoin:round;color:var(--graphite);--acc:var(--terra)}
.ic-sm{width:30px;height:30px}
.ic-lg{width:52px;height:52px}
.on-dark{color:var(--light)}
.on-dark .ic{color:var(--light)}

/* ── Header ── */
.hdr{position:sticky;top:0;z-index:50;background:rgba(244,241,235,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.hdr .bar{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:flex;align-items:center;gap:11px}
.logo .mk{height:34px;width:auto;flex:none}
.logo .lt{display:flex;flex-direction:column;line-height:1}
.logo .lt b{font-size:15px;font-weight:800;letter-spacing:-.01em}
.logo .lt i{font-style:normal;font-size:9.5px;font-weight:600;letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted);margin-top:4px}
.nav{display:flex;gap:22px;margin-left:8px}
.nav a{font-size:14px;font-weight:600;color:#46453f;padding:6px 0;border-bottom:2px solid transparent}
.nav a:hover,.nav a.on{color:var(--graphite);border-color:var(--terra)}
.hdr .right{margin-left:auto;display:flex;align-items:center;gap:18px}
.hdr .tel{font-weight:700;font-size:15px;white-space:nowrap}
.hdr .tel small{display:block;font-size:10px;font-weight:600;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}

/* ── Hero ── */
.hero{position:relative;color:#fff;overflow:hidden;background:var(--graphite)}
.hero .bg{position:absolute;inset:0}
.hero .bg img{width:100%;height:100%;object-fit:cover;opacity:.55}
.hero .bg:after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(23,26,28,.92) 0%,rgba(23,26,28,.7) 45%,rgba(23,26,28,.35) 100%)}
.hero .inner{position:relative;padding:84px 0 78px}
.hero .label{color:var(--stone)}
.hero h1{font-size:52px;line-height:1.02;margin:16px 0 18px;max-width:780px}
.hero h1 em{font-style:normal;color:var(--stone-l)}
.hero .sub{font-size:18px;color:#D7D1C6;max-width:560px;margin:0 0 30px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero .stats{display:flex;gap:36px;flex-wrap:wrap;margin-top:46px;
  padding-top:28px;border-top:1px solid rgba(255,255,255,.16)}
.hero .stats .s b{font-family:Oswald;font-weight:600;font-size:34px;display:block;line-height:1}
.hero .stats .s span{font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:#A9A296;margin-top:6px;display:block}
.hero .stats .s b em{font-style:normal;color:var(--terra);font-size:22px}

/* ── Sections ── */
section{padding:62px 0}
.sec-tint{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.lead{color:var(--muted);max-width:640px;font-size:16px;margin:-12px 0 34px}

/* ── Logistics dark strip ── */
.strip{background:var(--graphite);color:var(--light);padding:44px 0}
.strip .label{color:var(--stone)}
.logi{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;margin-top:24px}
.logi .it{display:flex;gap:14px;align-items:flex-start}
.logi .it b{display:block;font-size:15px;font-weight:700}
.logi .it span{font-size:13px;color:#A59E92;line-height:1.4}

/* ── USP cards ── */
.usp{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.usp .card{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:24px 22px}
.usp .card b{display:block;font-size:15px;font-weight:700;margin:14px 0 4px}
.usp .card .big{font-family:Oswald;font-weight:600;font-size:24px;color:var(--terra)}
.usp .card span{font-size:13px;color:var(--muted);line-height:1.45}

/* ── Catalog ── */
.cat{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.15s;display:flex;flex-direction:column}
.prod:hover{box-shadow:var(--sh);transform:translateY(-2px)}
.prod .ph{aspect-ratio:4/3;overflow:hidden;background:var(--stone)}
.prod .ph img{width:100%;height:100%;object-fit:cover}
.prod .bd{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.prod .frac{font-family:Oswald;font-weight:600;font-size:22px}
.prod h3{font-size:16px;margin:3px 0 8px}
.prod p{font-size:13px;color:var(--muted);margin:0 0 14px;flex:1}
.prod .row{display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);padding-top:14px}
.prod .price{font-size:12px;color:var(--muted)}
.prod .price b{display:block;font-family:Oswald;font-weight:600;font-size:18px;color:var(--graphite)}
.tag{display:inline-block;font-size:11px;font-weight:700;letter-spacing:.05em;
  padding:4px 9px;border-radius:3px;background:var(--stone-l);color:var(--terra-d)}

/* ── Trust / docs ── */
.docs{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.doc{display:flex;gap:16px;align-items:flex-start;background:#fff;
  border:1px solid var(--line);border-radius:var(--r);padding:22px}
.doc b{display:block;font-size:15px;font-weight:700;margin-bottom:3px}
.doc span{font-size:13px;color:var(--muted)}
.doc .dl{font-size:12px;font-weight:700;color:var(--terra);margin-top:9px;display:inline-flex;gap:6px;align-items:center}

/* ── Split (image + text) ── */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center}
.split.rev{grid-template-columns:1fr 1.05fr}
.split .pic{border-radius:var(--r);overflow:hidden;aspect-ratio:5/4;box-shadow:var(--sh)}
.split .pic img{width:100%;height:100%;object-fit:cover}
.split h2{font-size:30px;margin-bottom:16px}
.split p{color:#4f4e48;font-size:15.5px;margin:0 0 14px}
.minis{display:flex;gap:30px;flex-wrap:wrap;margin-top:22px}
.minis .m b{font-family:Oswald;font-weight:600;font-size:26px;display:block;color:var(--graphite)}
.minis .m span{font-size:12px;color:var(--muted);letter-spacing:.04em;text-transform:uppercase}

/* ── Applications ── */
.apps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.app{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 20px}
.app b{display:block;font-size:15px;margin:12px 0 4px}
.app span{font-size:13px;color:var(--muted)}

/* ── Geo / 2 modes ── */
.modes{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.mode{border:1px solid var(--line);border-radius:var(--r);padding:30px 28px;background:#fff}
.mode.far{background:var(--graphite);color:var(--light);border-color:var(--graphite)}
.mode h3{font-size:21px;margin-bottom:6px}
.mode .vol{font-family:Oswald;font-weight:600;font-size:15px;color:var(--terra);margin-bottom:14px}
.mode ul{margin:0;padding:0;list-style:none}
.mode li{font-size:14px;padding:8px 0;border-bottom:1px solid var(--line);display:flex;gap:10px;align-items:center}
.mode.far li{border-color:rgba(255,255,255,.12);color:#CFC8BC}
.mode li:last-child{border:none}
.geolist{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.geolist a{font-size:13px;font-weight:600;padding:8px 13px;border:1px solid var(--line);
  border-radius:4px;background:var(--paper)}
.geolist a:hover{border-color:var(--terra);color:var(--terra-d)}
.mode.far .geolist a{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);color:var(--light)}

/* ── CTA / Form ── */
.cta-band{background:var(--graphite);color:#fff}
.formwrap{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.formwrap h2{font-size:32px;margin-bottom:14px}
.formwrap p{color:#C3BCB0;font-size:15.5px}
.formwrap .chk{display:flex;gap:10px;align-items:flex-start;margin-top:12px;font-size:14px;color:#C3BCB0}
.formwrap .chk svg{flex:none;margin-top:1px;color:var(--terra)}
.form{background:#fff;border-radius:10px;padding:28px;color:var(--ink);box-shadow:var(--sh)}
.form .f{margin-bottom:14px}
.form label{display:block;font-size:12px;font-weight:700;letter-spacing:.04em;
  text-transform:uppercase;color:#6b6a64;margin-bottom:6px}
.form input,.form select,.form textarea{width:100%;font:inherit;font-size:14px;
  padding:11px 13px;border:1px solid var(--line);border-radius:5px;background:var(--paper);color:var(--ink)}
.form input:focus,.form select:focus,.form textarea:focus{outline:none;border-color:var(--terra);background:#fff}
.form .two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form .btn{width:100%;justify-content:center}
.routed{margin-top:14px;font-size:13px;padding:12px 14px;border-radius:6px;
  background:var(--stone-l);color:var(--terra-d);display:none}
.routed.show{display:block}
.routed b{font-weight:800}

/* ── Calculator ── */
.calc{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:start}
.calc .panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:26px;box-shadow:var(--sh)}
.calc .seg{display:flex;background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:4px;margin-bottom:18px}
.calc .seg button{flex:1;border:none;background:none;font:inherit;font-weight:700;font-size:13px;
  padding:9px;border-radius:4px;cursor:pointer;color:var(--muted)}
.calc .seg button.on{background:var(--graphite);color:#fff}
.calc .out{background:var(--graphite);color:#fff;border-radius:10px;padding:26px}
.calc .out .big{font-family:Oswald;font-weight:600;font-size:46px;line-height:1;color:var(--stone-l)}
.calc .out .big em{font-style:normal;font-size:22px;color:#A9A296}
.calc .out .row2{display:flex;justify-content:space-between;padding:11px 0;
  border-bottom:1px solid rgba(255,255,255,.12);font-size:14px}
.calc .out .row2:last-child{border:none}
.calc .out .row2 span{color:#A9A296}
.dens{font-size:12px;color:var(--muted);margin-top:14px;line-height:1.5}

/* ── Breadcrumb / page head ── */
.crumb{font-size:13px;color:var(--muted);padding:18px 0}
.crumb a:hover{color:var(--terra)}
.phead{padding:8px 0 40px}
.phead h1{font-size:40px;max-width:760px}
.phead .sub{color:var(--muted);font-size:17px;margin-top:14px;max-width:620px}

/* ── Spec table ── */
.spec{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.spec tr{border-bottom:1px solid var(--line)}
.spec tr:last-child{border:none}
.spec td{padding:13px 18px;font-size:14px}
.spec td:first-child{color:var(--muted);width:55%}
.spec td:last-child{font-weight:700;text-align:right}
.spec tr:nth-child(even){background:var(--paper)}

/* ── Price / assortment table ── */
.ptable-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:#fff;max-width:880px}
.ptable{width:100%;border-collapse:collapse;min-width:580px}
.ptable thead th{background:var(--graphite);color:#fff;font-size:11.5px;letter-spacing:.04em;
  text-transform:uppercase;text-align:left;padding:12px 18px;font-weight:700}
.ptable thead th:last-child{text-align:right}
.ptable td{padding:12px 18px;font-size:14px;border-bottom:1px solid var(--line)}
.ptable tbody tr:last-child td{border-bottom:none}
.ptable td:first-child{font-weight:600;color:var(--ink)}
.ptable td:first-child a{color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line)}
.ptable td:first-child a:hover{color:var(--terra-d);border-color:var(--terra)}
.ptable td:last-child{text-align:right;font-weight:700;font-family:Oswald;white-space:nowrap}
.ptable tr.grp td{background:var(--paper);font-weight:700;font-size:12px;letter-spacing:.03em;
  text-transform:uppercase;color:var(--terra-d);padding:11px 18px}

/* ── Footer ── */
footer{background:var(--graphite);color:#B6AFA3;padding:54px 0 30px;font-size:14px}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.12)}
footer h4{color:#fff;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px;font-weight:700}
footer a{display:block;padding:5px 0;color:#B6AFA3}
footer a:hover{color:#fff}
footer .logo b{color:#fff}
footer .logo span{color:#8a847a}
footer .req{font-size:12.5px;line-height:1.7;color:#8f897f;margin-top:14px}
footer .bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  padding-top:22px;font-size:12.5px;color:#7c766c}
.tel-lg{font-family:Oswald;font-weight:600;font-size:22px;color:#fff;margin-bottom:4px}

/* ── Utility ── */
.center{text-align:center}
.mt{margin-top:34px}
.muted{color:var(--muted)}
.notice{background:#fff;border:1px solid var(--line);border-left:3px solid var(--terra);
  border-radius:6px;padding:16px 20px;font-size:13.5px;color:#5a5a55;margin-top:24px}

/* ── Prose (SEO-текст) ── */
.prose{max-width:780px}
.prose p{font-size:15.5px;color:#46453f;margin:0 0 15px;line-height:1.72}
.prose h3{font-size:19px;margin:28px 0 11px;letter-spacing:-.01em}
.prose ul{margin:0 0 15px;padding-left:4px;list-style:none}
.prose li{font-size:15px;color:#46453f;line-height:1.6;padding:6px 0 6px 26px;position:relative}
.prose li::before{content:"";position:absolute;left:4px;top:13px;width:8px;height:8px;
  background:var(--terra);opacity:.5;border-radius:2px;transform:rotate(45deg)}
.prose b{color:var(--ink)}

/* ── FAQ ── */
.faq{max-width:820px}
.faq .qa{border-bottom:1px solid var(--line);padding:17px 0}
.faq .qa:first-child{border-top:1px solid var(--line)}
.faq .q{font-weight:700;font-size:16.5px;margin-bottom:8px;display:flex;gap:11px;align-items:baseline}
.faq .q::before{content:"?";color:#fff;background:var(--terra);font-size:12px;font-weight:800;
  width:20px;height:20px;border-radius:5px;display:inline-flex;align-items:center;justify-content:center;flex:none}
.faq .a{color:#55554f;font-size:14.5px;line-height:1.65;padding-left:31px}

/* ── Responsive ── */
@media(max-width:920px){
  .hero h1{font-size:38px}
  .logi,.usp,.apps{grid-template-columns:repeat(2,1fr)}
  .cat,.docs{grid-template-columns:repeat(2,1fr)}
  .split,.split.rev,.formwrap,.calc,.modes{grid-template-columns:1fr}
  .hdr .tel{display:none}
  .hdr .bar{flex-wrap:wrap;height:auto;padding:9px 0;gap:10px 16px}
  .nav{order:3;width:100%;gap:18px;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:2px}
  .nav a{white-space:nowrap;padding-bottom:2px}
  .hdr .right{margin-left:auto}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .cat,.usp,.docs,.apps,.logi{grid-template-columns:1fr}
  .hero h1{font-size:31px}
  .form .two{grid-template-columns:1fr}
}