:root{
  --bg:#f4f7fb;
  --bg2:#eef3f9;
  --card:#ffffff;
  --line:#dde6f1;
  --line2:#e8eef6;
  --text:#12243b;
  --muted:#66768d;
  --blue:#13365f;
  --blue2:#1e5aa6;
  --blue3:#3978c6;
  --accent:#eff6ff;
  --green:#17784a;
  --greenbg:#ebf8f0;
  --orange:#9d6508;
  --orangebg:#fff4df;
  --graybg:#edf1f6;
  --shadow:0 14px 34px rgba(15,39,77,.08);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:linear-gradient(180deg,var(--bg),var(--bg2));color:var(--text);font:16px/1.5 Inter,system-ui,-apple-system,Segoe UI,Arial,sans-serif}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.wrap{max-width:1280px;margin:0 auto;padding:0 22px}
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(221,230,241,.95)}
.nav{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:16px 0}
.logo{font-size:32px;font-weight:950;letter-spacing:.05em;color:var(--blue)}
.links{display:flex;flex-wrap:wrap;gap:24px;font-weight:700;color:#314863}.links a:hover{color:var(--blue2)}
.hero{padding:58px 0 32px}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:26px;align-items:stretch}
.hero-main{background:linear-gradient(135deg,#13355f 0%,#1d4f8f 58%,#4f8ed3 100%);color:#fff;border-radius:28px;padding:46px 42px;box-shadow:var(--shadow)}
.hero-main h1{font-size:clamp(40px,6vw,74px);line-height:1.02;margin:0 0 18px;font-weight:950;letter-spacing:-.03em}
.hero-main p{font-size:21px;line-height:1.45;max-width:820px;margin:0;color:#e4efff}
.hero-side{display:grid;grid-template-rows:auto 1fr;gap:18px}
.hero-panel,.hero-note{background:var(--card);border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow)}
.hero-panel{padding:24px}.hero-note{padding:22px}
.hero-panel h3,.hero-note h3{margin:0 0 16px;font-size:22px}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat{padding:18px;border-radius:18px;background:#f6f9fd;border:1px solid #e7eef7}
.stat .num{font-size:34px;font-weight:900;color:var(--blue)}
.stat .label{margin-top:4px;font-weight:700}.stat .sub{margin-top:2px;color:var(--muted);font-size:14px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.btn{display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:14px;padding:14px 20px;background:var(--blue2);color:#fff;font-weight:850;cursor:pointer;box-shadow:0 8px 22px rgba(28,82,145,.18)}
.btn:hover{transform:translateY(-1px)}
.btn.alt{background:#fff;color:var(--blue)}
.btn.ghost{background:#eef4fb;color:var(--blue)}
.section{padding:12px 0 42px}.section-block{background:var(--card);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow);padding:28px}
.section-title{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:18px}
.section-title h2{font-size:34px;line-height:1.1;margin:0;letter-spacing:-.02em}.muted{color:var(--muted)}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.feature{padding:22px;border-radius:20px;background:#f7faff;border:1px solid #e7eef7}.feature h3{margin:0 0 8px;font-size:20px}.feature p{margin:0;color:var(--muted)}
.info-strip{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.pill{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;background:#f2f7fc;border:1px solid #e2eaf3;font-weight:700;color:#2d4768}
.footer{background:#fff;border-top:1px solid var(--line);padding:26px 0 34px;margin-top:10px}.footer-grid{display:flex;justify-content:space-between;gap:22px;align-items:flex-start}.small{font-size:13px}
.catalog-hero{padding:30px 0 16px}.catalog-banner{background:linear-gradient(135deg,#13365f,#215a9b);color:#fff;border-radius:28px;padding:28px 30px;box-shadow:var(--shadow)}
.catalog-banner h1{margin:0;font-size:44px;line-height:1.05;letter-spacing:-.03em}.catalog-banner p{margin:10px 0 0;color:#e4efff;font-size:18px;max-width:800px}
.banner-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;align-items:end;margin-top:18px}.banner-metrics{display:flex;gap:10px;flex-wrap:wrap}.banner-chip{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.14);padding:10px 14px;border-radius:14px;font-weight:800}
.filters-wrap{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow);margin-top:18px}
.filters{display:grid;grid-template-columns:2fr repeat(4,1fr) auto;gap:12px}input,select,button{font:inherit}input,select{width:100%;padding:14px 15px;border:1px solid #cfdae7;border-radius:14px;background:#fff;color:var(--text)}input::placeholder{color:#8b9ab0}button.secondary{background:#edf3fb;color:#204d84;border:0;border-radius:14px;padding:14px 16px;font-weight:800;cursor:pointer}
.summary{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;align-items:center;margin:16px 4px 6px;color:#4f627c}.summary strong{color:var(--blue)}
.badge{display:inline-flex;align-items:center;border-radius:999px;padding:7px 11px;font-size:12px;font-weight:900;line-height:1;white-space:nowrap;letter-spacing:.01em}.badge.inv{background:#e8f4ff;color:#13518f}.badge.std{background:#fff3e4;color:#a55d07}.badge.stock-ok{background:var(--greenbg);color:var(--green)}.badge.stock-zero{background:var(--orangebg);color:var(--orange)}.badge.stock-unk{background:var(--graybg);color:#617183}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(285px,1fr));gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:24px;overflow:hidden;display:flex;flex-direction:column;box-shadow:var(--shadow);transition:transform .18s ease, box-shadow .18s ease}.card:hover{transform:translateY(-4px);box-shadow:0 20px 38px rgba(15,39,77,.12)}
.thumb{aspect-ratio:4/3;background:radial-gradient(circle at top right,#f8fbff,#e8f1fa);display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;border-bottom:1px solid var(--line2)}
.thumb img{width:100%;height:100%;object-fit:contain;padding:16px}.thumb .placeholder{font-size:15px;color:#72829a;text-align:center;padding:20px}
.card-body{padding:18px 18px 16px;display:flex;flex-direction:column;gap:12px;flex:1}
.brand{color:#607086;font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.title{font-size:22px;line-height:1.22;margin:0;font-weight:900;letter-spacing:-.02em}.article{color:#607086;font-size:14px}
.price{font-size:31px;font-weight:950;color:var(--blue);letter-spacing:-.02em}
.specs{display:grid;grid-template-columns:1fr 1fr;gap:10px 12px;padding-top:10px;border-top:1px dashed #d7e2ee}.spec{min-width:0}.spec .k{display:block;color:#74839a;font-size:12px}.spec .v{display:block;font-weight:800;margin-top:2px}
.card-actions{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:auto;padding-top:4px}.card-meta{font-size:13px;color:#738299}.btnsmall{padding:11px 13px;border-radius:12px;background:#eaf2ff;color:#124b8e;font-weight:850;border:0;cursor:pointer}
.pager{display:flex;justify-content:center;align-items:center;gap:12px;margin:28px 0}.pager button{min-width:120px}.pager button[disabled]{opacity:.4;cursor:default}
.modal{position:fixed;inset:0;background:rgba(11,22,37,.6);display:none;align-items:flex-start;justify-content:center;padding:22px;z-index:40;overflow:auto}.modal.show{display:flex}
.sheet{width:min(1180px,100%);background:#fff;border-radius:28px;box-shadow:0 30px 60px rgba(5,17,33,.28);overflow:hidden;border:1px solid #d7e2ef}.sheet-top{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid #e8eef6;background:#fbfdff}.sheet-close{border:0;background:#eef3fa;color:#264e80;font-size:20px;width:42px;height:42px;border-radius:12px;cursor:pointer;font-weight:900}
.sheet-body{padding:24px;display:grid;grid-template-columns:1.02fr .98fr;gap:28px}.gallery-main{aspect-ratio:4/3;background:#f7fbff;border:1px solid var(--line);border-radius:20px;display:flex;align-items:center;justify-content:center;overflow:hidden}.gallery-main img{width:100%;height:100%;object-fit:contain;padding:18px}.gallery-thumbs{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}.gallery-thumbs button{width:76px;height:76px;border-radius:12px;padding:0;border:1px solid var(--line);background:#fff;overflow:hidden;cursor:pointer}.gallery-thumbs img{width:100%;height:100%;object-fit:contain;padding:6px}
.det-brand{color:#62748d;text-transform:uppercase;font-weight:900;font-size:12px;letter-spacing:.08em}.det-title{margin:6px 0 10px;font-size:36px;line-height:1.12;letter-spacing:-.03em}.det-price{font-size:36px;font-weight:950;color:var(--blue);margin:8px 0 12px}.infobox{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 12px}
.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px 18px;margin:14px 0 18px;padding:16px;border:1px solid var(--line);border-radius:18px;background:#f7fbff}.desc{color:#32445a;margin:0 0 14px}.spec-table{display:grid;grid-template-columns:1fr 1fr;gap:8px 18px}.rowline{padding:10px 0;border-bottom:1px solid #edf2f7}.rowline .k{display:block;color:#718196;font-size:13px}.rowline .v{display:block;font-weight:800;margin-top:2px}.stockline,.equip{margin:14px 0 0}
.hide{display:none!important}
@media (max-width:1100px){.hero-grid,.sheet-body{grid-template-columns:1fr}.feature-grid{grid-template-columns:1fr 1fr}.filters{grid-template-columns:1fr 1fr 1fr}.filters .wide{grid-column:1/-1}}
@media (max-width:760px){.nav{flex-direction:column;align-items:flex-start}.wrap{padding:0 14px}.hero-main{padding:30px 24px}.hero-main p{font-size:18px}.stat-grid,.feature-grid,.specs,.quick-grid,.spec-table{grid-template-columns:1fr 1fr}.catalog-banner h1{font-size:34px}.section-title{flex-direction:column;align-items:flex-start}.footer-grid{flex-direction:column}.links{gap:14px}}
@media (max-width:540px){.stat-grid,.feature-grid,.filters,.specs,.quick-grid,.spec-table,.grid{grid-template-columns:1fr}.title{font-size:20px}.price,.det-price{font-size:28px}.hero-main h1{font-size:40px}.sheet-top,.sheet-body{padding:16px}}


.customer-points{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
.customer-point{padding:16px 18px;border-radius:18px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);color:#eef5ff}
.customer-point b{display:block;font-size:18px;margin-bottom:4px}
.contact-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:16px}
.contact-card{padding:22px;border-radius:20px;background:#f7faff;border:1px solid #e7eef7}
.contact-card h3{margin:0 0 10px;font-size:22px}
.contact-list{display:grid;gap:12px;margin-top:12px}
.contact-item{padding:14px 16px;border-radius:16px;background:#fff;border:1px solid #e4ebf4}
.contact-item .label{display:block;color:#708097;font-size:13px;margin-bottom:4px}
.contact-item .value{display:block;font-weight:800;color:#13365f}
.note-box{padding:18px 20px;border-radius:18px;background:#eff6ff;border:1px solid #dce9fb;color:#34516f}
.quick-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
@media (max-width:760px){.customer-points,.contact-grid{grid-template-columns:1fr}}

/* KVANT shop public site */
.site-brand{display:flex;align-items:center;gap:12px}.brand-mark{display:grid;place-items:center;width:42px;height:42px;background:#193f70;color:white;border-radius:12px;font-size:24px;font-weight:950}.brand-name{font-size:27px;font-weight:950;color:#15375d;letter-spacing:.035em}.brand-sub{font-size:11px;color:#7a899e;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.nav-btn{display:inline-flex;align-items:center;padding:11px 16px;border-radius:12px;color:white!important;background:#1c59a1;font-weight:800}
.shop-hero{padding:46px 0 28px;background:linear-gradient(160deg,#edf5fe,transparent 70%)}.shop-hero-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:20px}.shop-main{padding:54px 44px;border-radius:28px;color:#fff;background:linear-gradient(122deg,rgba(15,42,75,.93),rgba(23,72,128,.92)),url('img/hero-placeholder.svg') center/cover;box-shadow:0 20px 60px rgba(21,57,97,.15)}.shop-main .eyebrow{letter-spacing:.13em;color:#a9cffe;text-transform:uppercase;font-size:13px;font-weight:800;margin-bottom:16px}.shop-main h1{font-size:clamp(37px,4.3vw,61px);letter-spacing:-.035em;line-height:1.05;margin:0 0 20px}.shop-main p{color:#e2ecfa;font-size:19px;max-width:680px}.hero-right{display:grid;gap:18px}.hero-small{background:#fff;border:1px solid #dfebf7;border-radius:24px;padding:25px;box-shadow:var(--shadow)}.hero-small h3{margin:0 0 8px;font-size:23px}.hero-small p{margin:0;color:#66768d}.hero-small .symbol{font-size:31px;display:block;margin-bottom:12px}.minor-link{color:#1b5b9f;font-weight:800;display:inline-block;margin-top:16px}
.eyebrow-dark{color:#2c69a8;font-size:13px;font-weight:900;letter-spacing:.11em;text-transform:uppercase}.block-lead{max-width:760px;color:#677a90;margin:6px 0 22px;font-size:17px}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.category-tile{display:flex;flex-direction:column;min-height:208px;padding:24px;border:1px solid #e0e8f3;border-radius:22px;background:linear-gradient(145deg,#fff,#f6f9fd);position:relative;overflow:hidden;transition:.15s ease}.category-tile:hover{border-color:#b7cee7;transform:translateY(-3px);box-shadow:var(--shadow)}.category-tile .tile-ico{font-size:36px;margin-bottom:16px}.category-tile h3{font-size:23px;margin:0 0 7px}.category-tile p{color:#66768d;margin:0;font-size:14px}.category-tile .tile-footer{margin-top:auto;padding-top:16px;font-weight:850;color:#1d579a}.category-tile.active{border-color:#a9c8ef;background:linear-gradient(135deg,#f0f7ff,#fff)}.category-tile .tile-status{position:absolute;right:18px;top:19px;background:#e6f4ea;color:#207341;font-size:11px;font-weight:900;border-radius:50px;padding:6px 10px}
.service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.service-tile{padding:22px;border-radius:20px;background:#f8fbff;border:1px solid #e5ecf5}.service-tile h3{margin:0 0 9px;font-size:19px}.service-tile p{margin:0;color:#63758c;font-size:14px}.service-tile .s-number{font-size:12px;color:#326ba7;letter-spacing:.12em;font-weight:900;margin-bottom:12px}
.contacts-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.contact-panel{padding:24px;background:#f7faff;border:1px solid #e5ecf5;border-radius:20px}.contact-panel h3{margin:0 0 14px;font-size:22px}.contact-detail{padding:12px 0;border-bottom:1px solid #e2ebf4}.contact-detail:last-child{border:0}.contact-detail small{display:block;color:#76869b;margin-bottom:2px}.contact-detail b{font-size:19px;color:#19395f}.contact-detail a{color:#19599f}.contact-btns{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}
.install-strip{background:linear-gradient(110deg,#13365f,#265e9f);border-radius:22px;padding:28px 30px;color:#fff;margin:20px 0 0;display:flex;justify-content:space-between;align-items:center;gap:20px}.install-strip h3{font-size:25px;margin:0 0 6px}.install-strip p{color:#d6e8ff;margin:0}.install-strip .btn{white-space:nowrap;background:#fff;color:#164270}
.install-form{display:grid;grid-template-columns:1fr 1fr;gap:16px}.install-form .full{grid-column:1/-1}.install-form label{font-size:13px;font-weight:850;color:#3e5979;display:block;margin-bottom:6px}.install-form textarea{width:100%;min-height:110px;resize:vertical;padding:14px;border-radius:14px;border:1px solid #cfdae7;font:inherit}.install-form input[type=checkbox]{width:auto}.estimate{background:#eaf3ff;padding:20px;border-radius:18px;border:1px solid #cddff7}.estimate-amount{font-size:34px;font-weight:950;color:#143e71}.estimate small{color:#667d95}.calc-note{font-size:13px;color:#728197}.form-status{font-weight:800;padding:12px;border-radius:10px;display:none}.form-status.visible{display:block}.form-status.error{background:#fff0ef;color:#9d302b}.form-status.ok{background:#eaf7ee;color:#176a3e}
.catalog-support{margin:0 auto 20px;padding:20px 24px;background:#eaf3ff;border:1px solid #cbdff5;border-radius:22px;display:flex;align-items:center;justify-content:space-between;gap:16px}.catalog-support b{font-size:22px}.catalog-support p{margin:4px 0 0;color:#506b87}.catalog-support .btn{white-space:nowrap}
.nav a[aria-current=page]{color:#1a5da8}
@media(max-width:960px){.shop-hero-grid,.category-grid,.service-grid{grid-template-columns:1fr 1fr}.shop-main{grid-column:1/-1}.hero-right{grid-column:1/-1;grid-template-columns:1fr 1fr}}
@media(max-width:670px){.shop-hero-grid,.hero-right,.category-grid,.service-grid,.contacts-grid,.install-form{grid-template-columns:1fr}.install-form .full{grid-column:auto}.shop-main{padding:31px 24px}.shop-main h1{font-size:38px}.install-strip,.catalog-support{flex-direction:column;align-items:flex-start}.links{gap:12px;font-size:13px}.nav-btn{padding:8px 11px}.brand-name{font-size:22px}.brand-mark{width:36px;height:36px}.category-tile{min-height:175px}}

/* v12: panoramic hero; no duplicate product tiles */
.shop-hero{padding:30px 0 26px}
.shop-hero-grid{display:block!important}
.shop-main{width:100%;min-height:345px;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;padding:52px 64px;background:radial-gradient(circle at 89% 18%,rgba(92,159,227,.46),transparent 37%),linear-gradient(118deg,#153458 0%,#204f86 64%,#387abc 100%);box-shadow:0 22px 50px rgba(24,62,107,.15)}
.shop-main h1{max-width:890px;font-size:clamp(39px,4.4vw,65px)}
.shop-main p{max-width:830px}
.hero-right{display:none!important}
/* v12: polished estimate and contact form */
.calc-shell{border:1px solid #dbe7f5;background:linear-gradient(140deg,#f9fcff,#fff 60%);padding:26px;border-radius:25px;box-shadow:0 16px 36px rgba(18,53,97,.07)}
.calc-header{display:flex;align-items:center;gap:14px;margin:5px 0 17px}
.calc-header.full{grid-column:1/-1;margin:13px 0 0;padding-top:24px;border-top:1px solid #e3ecf6}
.calc-step{display:grid;place-items:center;flex-shrink:0;width:42px;height:42px;border-radius:14px;background:#e5f0ff;color:#174d88;font-weight:950;font-size:18px}
.calc-header strong{font-size:20px;color:#13365f}.calc-header p{margin:2px 0 0;color:#71829a;font-size:14px}
.install-form{gap:17px 22px}
.install-form>div:not(.estimate):not(.calc-header):not(.full){background:#f6f9fe;border:1px solid #e2ebf6;border-radius:17px;padding:14px 15px}
.install-form label{font-size:14px;margin-bottom:8px}
.install-form select,.install-form input:not([type=checkbox]),.install-form textarea{border:1px solid #cfdded;background:#fff;border-radius:12px;min-height:46px}
.install-form select:focus,.install-form input:focus,.install-form textarea:focus{outline:3px solid #c5dcf8;border-color:#3d81cf}
.install-form .full>label{margin-bottom:8px}
.estimate{position:relative;padding:26px 30px;border-radius:22px;color:#17375d;background:linear-gradient(110deg,#ebf5ff,#d9eaff);border:1px solid #bfd6f1}
.estimate-eyebrow{font-weight:900;color:#2864a2;letter-spacing:.09em;text-transform:uppercase;font-size:12px;margin-bottom:7px}
.estimate-amount{font-size:clamp(31px,4vw,47px);letter-spacing:-.045em;margin:7px 0}
.estimate small{font-size:14px;color:#516c8d}
.form-status.visible{padding:15px;border-radius:14px}
.install-form .contact-btns{margin-top:12px}
.install-form .contact-btns .btn{padding:15px 20px}
@media(max-width:670px){.shop-main{min-height:0;padding:38px 26px}.shop-main h1{font-size:37px}.calc-shell{padding:15px}.install-form{grid-template-columns:1fr}.calc-header.full{grid-column:auto}.estimate{padding:22px}}