/* Commercial polish layer. Keeps the engineering character while removing instrument-like UI language. */
:root{--header-dark:#0c1219;--panel-dark:#121a23;--soft-blue:#e9f1ff;--soft-gray:#f3f5f7}
html.modal-open{overflow:hidden}

/* Header */
.site-header-v3{position:sticky;top:0;z-index:80;background:#fff;box-shadow:0 1px 0 rgba(13,18,24,.08)}
.contact-strip{background:var(--header-dark);color:#aeb9c6;font-size:12px}
.contact-strip-inner{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.contact-location{white-space:nowrap}
.contact-strip-links{display:flex;align-items:center;gap:20px;flex-wrap:wrap;justify-content:flex-end}
.contact-strip-links a{color:#dce5ef;text-decoration:none;transition:.18s}
.contact-strip-links a:hover{color:#fff}
.header-grid-v3{min-height:78px;display:grid;grid-template-columns:190px minmax(0,1fr) auto;align-items:center;gap:30px}
.nav-v3{display:flex;align-items:center;justify-content:center;gap:30px}
.nav-v3>a,.mega-menu>summary{font-size:13px;font-weight:750;color:var(--ink);text-decoration:none;cursor:pointer;list-style:none;white-space:nowrap}
.mega-menu>summary::-webkit-details-marker{display:none}.mega-menu>summary span{margin-left:5px;color:#7c8795}
.mega-menu{position:static}.mega-menu[open]>summary{color:var(--blue)}
.mega-menu-panel{position:absolute;left:50%;top:112px;transform:translateX(-50%);width:min(1180px,calc(100vw - 40px));background:#fff;border-top:3px solid var(--blue);box-shadow:0 24px 70px rgba(9,17,27,.18);padding:30px;z-index:90}
.mega-menu-head{display:flex;justify-content:space-between;gap:30px;align-items:end;padding-bottom:20px;border-bottom:1px solid var(--line)}
.mega-menu-head>div{display:grid;gap:5px}.mega-menu-head span{color:#718092;font-size:11px}.mega-menu-head strong{font-size:25px}.mega-menu-head>a{color:var(--blue);font-size:12px;font-weight:800;text-decoration:none}
.mega-category-grid{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--line);margin-top:22px}
.mega-category-grid a{min-height:92px;padding:18px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-decoration:none;display:flex;flex-direction:column;justify-content:space-between;gap:12px}
.mega-category-grid a:hover{background:#f5f8fc}.mega-category-grid strong{font-size:14px}.mega-category-grid span{color:#7c8896;font-size:11px}
.mega-service-row{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:22px}
.mega-service-row a{background:#f3f6f9;padding:17px 18px;text-decoration:none;display:grid;gap:5px}.mega-service-row strong{font-size:13px}.mega-service-row span{font-size:11px;color:#778493}
.mobile-menu-v3{display:none}

/* Hero */
.signal-hero-v3 .hero-copy h1{font-size:clamp(48px,5.8vw,86px);line-height:.98;max-width:790px}
.signal-hero-v3 .hero-copy p{max-width:680px;font-size:18px;line-height:1.62}
.signal-hero-v3 .hero-rail{font-size:10px;letter-spacing:.08em;text-transform:none}
.hero-quick-contacts{display:flex;gap:22px;margin-top:25px;flex-wrap:wrap}.hero-quick-contacts a{color:#b7c6d6;text-decoration:none;font-size:12px;border-bottom:1px solid #354250;padding-bottom:4px}
.spectrum-board-v3 .board-head{font-family:inherit;text-transform:none;letter-spacing:0;font-size:11px;font-weight:700}
.registry-section-v3 .section-aside h2{font-size:clamp(38px,4.6vw,64px)}
.selection-band-v3 .selection-code{display:none}.selection-band-v3 .selection-grid{grid-template-columns:170px minmax(250px,1fr) minmax(270px,.9fr) auto;align-items:center}
.scenario-section-v3 .scenario-register article>span{font-family:inherit;letter-spacing:0;text-transform:none;font-size:11px;font-weight:800;color:#8fa0b2}

/* Videos */
.video-section{padding:96px 0;background:#fff}
.section-heading-row{display:grid;grid-template-columns:minmax(0,7fr) minmax(280px,4fr);gap:70px;align-items:end;margin-bottom:38px}.section-heading-row h2{font-size:clamp(38px,4.6vw,62px);margin-top:7px}.section-heading-row>p{color:var(--muted);line-height:1.65;max-width:520px}
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.video-card{margin:0;border:1px solid var(--line);background:#0c1219}.video-card video{display:block;width:100%;aspect-ratio:16/10;object-fit:cover;background:#0b1016}.video-card figcaption{background:#fff;padding:14px 16px;font-size:13px;font-weight:750;border-top:1px solid var(--line)}

/* Equipment rows */
.equipment-row-v3{display:grid;grid-template-columns:116px minmax(0,1fr) 150px 150px;gap:22px;align-items:center;min-height:118px;padding:14px 0;border-bottom:1px solid var(--line)}
.equipment-row-v3 .equipment-thumb{height:86px;border:1px solid var(--line);display:grid;place-items:center;overflow:hidden;background:#fff}.equipment-row-v3 .equipment-thumb img{width:100%;height:100%;object-fit:contain}.equipment-row-v3 .equipment-thumb span{font-size:10px;color:#8a95a2;text-align:center;padding:8px}.equipment-row-v3 .cart-add-mini{text-transform:none;letter-spacing:0;font-family:inherit;font-size:11px;font-weight:800;min-height:42px}
.equipment-section-v3 .equipment-head{align-items:end}.equipment-section-v3 .equipment-head>div h2{font-size:clamp(40px,4.8vw,66px);margin-top:6px}
.advantages-section-v3 .advantages-list b{font-family:inherit}

/* Avito */
.home-avito-section{padding:96px 0;background:#eef1f4}
.avito-block{display:grid;grid-template-columns:minmax(0,7fr) minmax(320px,5fr);gap:0;background:#fff;border:1px solid #e0e5ea;box-shadow:0 18px 50px rgba(20,31,44,.07)}
.avito-copy{padding:46px 48px}.avito-copy h2{font-size:clamp(34px,4vw,54px);max-width:720px;margin-top:8px}.avito-copy>p{max-width:760px;color:#4f5d6d;font-size:16px;line-height:1.68;margin-top:18px}.avito-actions{display:flex;gap:22px;align-items:center;margin-top:28px;flex-wrap:wrap}
.avito-card{margin:24px;background:linear-gradient(135deg,#e7f2ff,#edf9f3);padding:34px 30px;display:flex;flex-direction:column;justify-content:center}.avito-card>span{font-size:11px;font-weight:800;color:#4e5d6d}.avito-card>strong{font-size:34px;margin:12px 0}.avito-card p{font-size:14px;line-height:1.6}.avito-card ul{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:9px}.avito-card li{font-size:13px;padding-left:21px;position:relative}.avito-card li:before{content:'✓';position:absolute;left:0;color:#168151;font-weight:900}

/* General commercial pages */
.commercial-page{padding-bottom:90px}.page-hero{padding:42px 0 58px;border-bottom:1px solid var(--line)}.page-hero-compact{padding-bottom:42px}.page-hero h1{font-size:clamp(48px,6vw,82px);line-height:1.02;max-width:1000px;margin:8px 0 22px}.page-hero>p{max-width:850px;font-size:18px;line-height:1.65;color:#566474}.page-hero .hero-actions{margin-top:28px}
.service-cards{display:grid;margin:52px 0 70px;border-top:1px solid var(--ink);border-left:1px solid var(--line)}.service-cards-3{grid-template-columns:repeat(3,1fr)}.service-cards-4{grid-template-columns:repeat(4,1fr)}.service-cards article{padding:27px 24px 30px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.service-cards article>span{color:var(--blue);font-size:11px;font-weight:850}.service-cards h2{font-size:21px;margin:23px 0 12px}.service-cards p{color:#637080;font-size:14px;line-height:1.65}
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:44px 0}.contact-card{min-height:165px;padding:24px;border:1px solid var(--line);text-decoration:none;display:flex;flex-direction:column;justify-content:space-between}.contact-card:hover{border-color:var(--blue);background:#f7faff}.contact-card span{font-size:11px;color:#718091}.contact-card strong{font-size:18px;overflow-wrap:anywhere}.contact-card small{font-size:11px;color:var(--blue);font-weight:750}
.contact-info-band{display:grid;grid-template-columns:1fr 1fr 1.2fr;margin:0 0 62px;background:#101720;color:#fff}.contact-info-band>div{padding:24px 26px;border-right:1px solid #2b3744;display:grid;gap:8px}.contact-info-band span{font-size:10px;color:#8190a1}.contact-info-band strong{font-size:15px}.contact-info-band small{color:#9eabb8}
.process-section{display:grid;grid-template-columns:minmax(260px,4fr) minmax(0,8fr);gap:70px;margin:80px 0}.process-copy h2{font-size:clamp(38px,4.5vw,60px);margin-top:8px}.process-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--ink)}.process-list li{display:grid;grid-template-columns:54px 1fr;gap:20px;padding:20px 0;border-bottom:1px solid var(--line)}.process-list b{color:var(--blue)}.process-list strong{font-size:17px}.process-list p{margin-top:5px;color:var(--muted);line-height:1.55}
.notice-panel{margin:60px 0;background:#eef3fa;border-left:4px solid var(--blue);padding:30px 34px}.notice-panel h2{font-size:24px}.notice-panel p{margin-top:10px;max-width:1000px;color:#566475;line-height:1.7}
.page-form-section{margin-top:72px;display:grid;grid-template-columns:minmax(260px,4fr) minmax(0,8fr);gap:70px;align-items:start}.page-form-copy h2{font-size:clamp(36px,4.2vw,56px);margin-top:8px}.page-form-copy p{color:var(--muted);line-height:1.65;margin-top:16px}.page-form-card{background:#101720;color:#fff;padding:34px}.page-form-card .lead-form input,.page-form-card .lead-form textarea{background:#0c1219}.page-form-card .consent span{color:#9ba8b6!important}.page-form-card .consent a{color:#c9dcff}
.audit-intro-grid,.audit-result{display:grid;grid-template-columns:minmax(260px,4fr) minmax(0,8fr);gap:70px;margin:70px 0}.audit-intro-grid h2,.audit-result h2{font-size:clamp(38px,4.6vw,62px);margin-top:8px}.audit-points{border-top:1px solid var(--ink)}.audit-points p{padding:19px 0;border-bottom:1px solid var(--line);font-size:16px;line-height:1.6}.audit-result ul{margin:0;padding:0;list-style:none;border-top:1px solid var(--ink)}.audit-result li{padding:17px 0 17px 26px;border-bottom:1px solid var(--line);position:relative;line-height:1.55}.audit-result li:before{content:'✓';position:absolute;left:0;color:var(--blue);font-weight:900}
.legal-document{max-width:960px;margin:48px auto 0}.legal-document section{padding:28px 0;border-bottom:1px solid var(--line)}.legal-document h2{font-size:23px;margin-bottom:12px}.legal-document p{color:#4f5d6d;line-height:1.75}.legal-document a{color:var(--blue)}

/* Product */
.product-v3 .technical-corner{font-family:inherit;text-transform:none;letter-spacing:0;font-size:11px;font-weight:800}.product-v3 .product-status-line{font-family:inherit;letter-spacing:0;text-transform:none}.product-v3 .product-status-line span{font-size:11px}.product-v3 .product-status-line b{font-size:11px}.diagram-grid-v3{grid-template-columns:repeat(2,minmax(0,1fr))}.diagram-grid-v3 figure{box-shadow:0 6px 24px rgba(18,30,43,.05)}.diagram-grid-v3 img{aspect-ratio:1.63/1;object-fit:contain}.diagram-grid-v3 figcaption{font-size:13px;line-height:1.45}.document-list a>span{font-family:inherit;letter-spacing:0;text-transform:none}

/* Modal */
.success-modal{position:fixed;inset:0;z-index:120;display:grid;place-items:center;padding:20px;opacity:0;transition:.18s}.success-modal[hidden]{display:none}.success-modal.is-open{opacity:1}.success-modal-backdrop{position:absolute;inset:0;background:rgba(5,10,16,.72);backdrop-filter:blur(4px)}.success-modal-card{position:relative;z-index:1;width:min(560px,100%);background:#fff;padding:44px 44px 40px;box-shadow:0 28px 90px rgba(0,0,0,.3);transform:translateY(10px);transition:.18s}.success-modal.is-open .success-modal-card{transform:none}.success-modal-close{position:absolute;right:17px;top:15px;width:36px;height:36px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:22px}.success-mark{display:grid;place-items:center;width:50px;height:50px;background:var(--blue);color:#fff;font-size:24px;font-weight:900;margin-bottom:24px}.success-modal-card h2{font-size:38px;margin:8px 0 13px}.success-modal-card p{color:#5f6d7c;line-height:1.65}.success-modal-actions{display:flex;align-items:center;gap:22px;margin-top:28px;flex-wrap:wrap}

/* Footer */
.footer-bottom-v3{align-items:flex-end}.footer-bottom-v3>div{display:flex;gap:22px;flex-wrap:wrap}.developer-credit{font-size:10px!important;color:#738294!important;white-space:nowrap}

@media(max-width:1100px){
  .contact-strip-inner{align-items:flex-start;padding-top:8px;padding-bottom:8px}.contact-strip-links{gap:12px 16px}
  .header-grid-v3{grid-template-columns:170px 1fr auto}.nav-v3{gap:18px}.nav-v3>a,.mega-menu>summary{font-size:12px}.mega-menu-panel{top:118px}.mega-category-grid{grid-template-columns:repeat(3,1fr)}
  .video-grid{grid-template-columns:1fr 1fr}.video-card:first-child{grid-column:1/-1}.equipment-row-v3{grid-template-columns:100px minmax(0,1fr) 125px 135px}
  .service-cards-4{grid-template-columns:1fr 1fr}.contact-grid{grid-template-columns:1fr 1fr}.page-form-section,.process-section,.audit-intro-grid,.audit-result{grid-template-columns:1fr;gap:36px}.selection-band-v3 .selection-grid{grid-template-columns:1fr 1fr;gap:28px}.selection-band-v3 .selection-grid>a{justify-self:start}
}
@media(max-width:860px){
  .contact-strip{display:none}.header-grid-v3{min-height:70px;grid-template-columns:1fr auto auto}.nav-v3{display:none}.mobile-menu-v3{display:block;position:relative}.mobile-menu-v3>summary{cursor:pointer;font-size:12px;font-weight:800}.mobile-menu-v3>div{position:absolute;right:0;top:36px;width:min(360px,calc(100vw - 32px));background:#fff;border-top:3px solid var(--blue);box-shadow:0 20px 60px rgba(0,0,0,.18);padding:14px;display:grid}.mobile-menu-v3 a{padding:11px 8px;border-bottom:1px solid var(--line);text-decoration:none;font-size:13px}.mobile-menu-v3 .mobile-sub{padding-left:22px;color:#657384;font-size:12px}
  .section-heading-row{grid-template-columns:1fr;gap:18px}.avito-block{grid-template-columns:1fr}.avito-card{margin:0 24px 24px}.service-cards-3{grid-template-columns:1fr}.contact-info-band{grid-template-columns:1fr}.contact-info-band>div{border-right:0;border-bottom:1px solid #2b3744}
  .diagram-grid-v3{grid-template-columns:1fr}
}
@media(max-width:680px){
  .header-grid-v3{gap:12px}.header-grid-v3 .brand-image{width:142px;min-width:142px}.header-grid-v3 .brand-image img{width:142px}.header-action{padding-left:10px;padding-right:10px}
  .signal-hero-v3 .hero-copy h1{font-size:44px}.signal-hero-v3 .hero-copy p{font-size:16px}.selection-band-v3 .selection-grid{grid-template-columns:1fr}.video-grid{grid-template-columns:1fr}.video-card:first-child{grid-column:auto}
  .equipment-row-v3{grid-template-columns:78px minmax(0,1fr);gap:12px;padding:16px 0}.equipment-row-v3 .equipment-thumb{height:70px}.equipment-row-v3 .equipment-price{grid-column:2}.equipment-row-v3 .cart-add-mini{grid-column:1/-1;width:100%}
  .avito-copy{padding:32px 24px}.avito-card{padding:27px 23px;margin:0 14px 14px}.avito-copy h2{font-size:34px}.contact-grid{grid-template-columns:1fr}.service-cards-4{grid-template-columns:1fr}.page-hero h1{font-size:44px}.page-hero>p{font-size:16px}.page-form-card{padding:24px 18px}.success-modal-card{padding:38px 24px 28px}.success-modal-card h2{font-size:32px}.footer-bottom-v3{align-items:flex-start;flex-direction:column}.developer-credit{white-space:normal}
}