:root{--bg:#f5f7f8;--surface:#fff;--ink:#111923;--muted:#5b6672;--line:#dce2e6;--accent:#b1d3ff;--accent2:#b1d3ff;--dark:#101923;--radius:20px;--shadow:0 18px 50px rgba(15,25,35,.08);--max:1240px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}a{color:inherit;text-decoration:none}.container{width:min(var(--max),calc(100% - 40px));margin:auto}.narrow{max-width:900px}.section{padding:72px 0}.section-muted{background:#edf1f3}.section-dark{background:var(--dark);color:#fff}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:12px;font-weight:900;color:#76818b;margin-bottom:12px}.section-dark .eyebrow,.product-hero .eyebrow{color:#aebac4}h1,h2,h3{line-height:1.08;margin:0 0 20px;letter-spacing:-.035em}h1{font-size:clamp(38px,5vw,68px);max-width:1000px}h2{font-size:clamp(30px,3.3vw,48px)}h3{font-size:32px}.lead{font-size:21px;color:var(--muted);max-width:850px}.section-dark .lead,.product-hero .lead{color:#c5ced5}.site-header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.topbar{min-height:82px;display:flex;align-items:center;gap:30px}.brand{font-size:26px;font-weight:950;letter-spacing:-.04em;display:flex;align-items:baseline;white-space:nowrap}.brand span{background:var(--accent);padding:1px 5px;border-radius:4px}.brand small{font-size:10px;letter-spacing:.02em;font-weight:700;color:#6e7984;margin-left:9px}.nav{display:flex;gap:22px;margin-left:auto}.nav a{font-weight:750;font-size:14px}.header-cta{display:flex;align-items:center;gap:14px}.phone{font-weight:900;white-space:nowrap}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:50px;padding:0 22px;border:0;border-radius:12px;background:var(--accent);color:#121a1f;font-weight:900;cursor:pointer;font-size:15px}.btn:hover{background:var(--accent2)}.btn-small{min-height:42px;padding:0 16px}.btn-light{background:#fff}.menu-toggle{display:none;border:0;background:transparent;font-size:28px}.breadcrumbs{display:flex;gap:8px;align-items:center;padding-top:20px;font-size:13px;color:#66727c;overflow:auto;white-space:nowrap}.hero{background:linear-gradient(135deg,#101923 0%,#172a39 65%,#213c4c 100%);color:#fff;padding:76px 0}.hero-grid{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(360px,.65fr);gap:58px;align-items:start}.hero-text{font-size:22px;color:#c7d1d8;max-width:760px}.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.hero-points span{border:1px solid rgba(255,255,255,.18);border-radius:999px;padding:8px 12px;color:#dbe3e7;font-size:13px}.hero-panel{background:#fff;color:var(--ink);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}.hero-panel>strong{font-size:24px}.hero-panel>p{color:var(--muted)}.search-box{display:flex;gap:10px}.search-box input{width:100%;min-height:54px;border:1px solid var(--line);border-radius:12px;padding:0 16px;font-size:16px;background:#fff}.search-box-hero{max-width:760px;margin-top:28px}.search-box-hero input{min-height:60px;border:0}.search-box-large{max-width:820px;margin:30px 0 42px}.lead-form{display:grid;gap:14px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.lead-form label{display:grid;gap:6px;font-size:12px;font-weight:800;color:#55616b}.lead-form input,.lead-form textarea{width:100%;border:1px solid #d8dfe4;border-radius:10px;background:#fff;padding:12px 13px;font:inherit;color:var(--ink)}.lead-form textarea{resize:vertical}.lead-form-compact .form-grid{grid-template-columns:1fr}.lead-form-compact .serial-field{display:none}.file-field{border:1px dashed #bdc7ce;border-radius:10px;padding:10px}.privacy{display:flex!important;grid-template-columns:auto 1fr!important;align-items:start!important;gap:9px!important}.privacy input{width:auto;margin-top:4px}.form-status{font-size:13px;font-weight:800}.form-status.success{color:#23713d}.form-status.error{color:#b12d2d}.hp{position:absolute!important;left:-9999px!important}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:30px}.section-head h2{margin-bottom:0}.section-head>a{font-weight:900}.tile-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.tile{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;min-height:170px;transition:.18s}.tile:hover,.model-card:hover,.article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.tile strong{display:block;font-size:20px;margin-bottom:12px}.tile span{color:var(--muted);font-size:14px}.brand-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.brand-grid>a{border:1px solid rgba(255,255,255,.16);padding:20px;border-radius:14px;font-weight:900;display:grid;gap:7px}.brand-grid>a span{font-size:12px;font-weight:600;color:#aeb8bf}.brand-grid-light>a{background:#fff;border-color:var(--line);min-height:135px}.brand-grid-light>a span{color:var(--muted);font-weight:500}.split{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:start}.steps{display:grid;gap:10px;margin-top:28px}.steps>div,.request-tips>div{display:flex;gap:16px;align-items:flex-start;padding:16px 0;border-top:1px solid var(--line)}.steps b,.request-tips b{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--accent);font-size:12px;flex:0 0 auto}.steps span,.request-tips span{display:grid}.steps strong,.request-tips strong{font-size:17px}.accent-card{background:var(--accent);border-radius:var(--radius);padding:34px}.accent-card .eyebrow{color:#31577f}.accent-card p{font-size:18px}.accent-card .btn{background:var(--dark);color:#fff}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.article-card{display:grid;align-content:start;gap:10px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;transition:.18s}.article-card>span{font-size:11px;text-transform:uppercase;letter-spacing:.1em;font-weight:900;color:#7a858e}.article-card strong{font-size:21px;line-height:1.2}.article-card p{color:var(--muted);font-size:14px}.article-card em{font-style:normal;font-weight:900;margin-top:auto}.cta{padding-top:0}.cta-box{background:var(--dark);color:#fff;border-radius:24px;padding:38px 44px;display:flex;align-items:center;justify-content:space-between;gap:30px}.cta-box h2{margin:0;max-width:850px}.cta-box .eyebrow{color:#aeb8bf}.product-hero{background:var(--dark);color:#fff;padding:62px 0}.product-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:start}.quote-card,.form-card{background:#fff;color:var(--ink);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}.quote-card h2{font-size:28px}.quote-card>p{color:var(--muted)}.facts{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:32px}.facts>div{border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:16px;display:grid}.facts span{font-size:12px;color:#9eabb5}.facts strong{font-size:16px}.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}.model-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;display:grid;gap:6px;transition:.18s}.model-card .model-brand{font-size:11px;font-weight:900;color:#77838c;letter-spacing:.1em}.model-card strong{font-size:22px}.model-card span{color:var(--muted);font-size:14px}.model-card em{font-style:normal;font-weight:900;margin-top:10px}.content-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:54px;align-items:start}.prose{font-size:18px}.prose h2{font-size:32px;margin-top:44px}.prose p,.prose li{color:#3d4852}.prose li{margin:8px 0}.note{background:#eff4f5;border-left:5px solid var(--accent2);padding:20px;margin:30px 0;border-radius:0 14px 14px 0}.side-links{display:grid;gap:0;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}.side-links strong,.side-links a{padding:16px;border-bottom:1px solid var(--line)}.side-links a:hover{background:#f2f5f6}.sticky{position:sticky;top:112px}.seo-copy{margin-top:55px;max-width:900px}.seo-copy h2{font-size:32px}.empty{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;margin-top:30px}.form-page{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:start}.request-tips{margin-top:28px}.site-footer{background:#0c141c;color:#dce3e7;padding:55px 0 20px}.footer-grid{display:grid;grid-template-columns:1.35fr .8fr .8fr .9fr;gap:42px}.footer-grid>div{display:grid;align-content:start;gap:10px}.footer-grid p{color:#95a3ad}.footer-brand{color:#fff;width:max-content}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:18px;color:#7f8d97;font-size:12px}@media(max-width:1050px){.nav{display:none;position:absolute;top:82px;left:0;right:0;background:#fff;padding:20px;box-shadow:var(--shadow);flex-direction:column}.nav.open{display:flex}.menu-toggle{display:block}.header-cta .phone{display:none}.hero-grid,.product-grid,.content-grid,.split,.form-page{grid-template-columns:1fr}.hero-panel{max-width:700px}.tile-grid{grid-template-columns:repeat(2,1fr)}.brand-grid{grid-template-columns:repeat(3,1fr)}.article-grid{grid-template-columns:repeat(2,1fr)}.sticky{position:static}}@media(max-width:680px){.container{width:min(100% - 24px,var(--max))}.section{padding:48px 0}.topbar{min-height:68px}.brand{font-size:23px}.brand small{display:none}.header-cta .btn{display:none}.hero{padding:48px 0}.hero-grid{gap:30px}.hero h1{font-size:42px}.hero-text{font-size:18px}.hero-panel{padding:18px}.search-box{display:grid}.tile-grid,.brand-grid,.article-grid,.model-grid,.facts,.form-grid{grid-template-columns:1fr}.section-head{align-items:start;display:grid}.cta-box{padding:28px;display:grid}.quote-card,.form-card{padding:18px}.footer-grid{grid-template-columns:1fr}.content-grid{gap:30px}}
.subdirectory{display:grid;gap:32px;margin-top:48px}.subdirectory section{border-top:1px solid var(--line);padding-top:26px}.subdirectory h2{font-size:28px}.chips{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.chips a{display:inline-flex;padding:9px 13px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px;font-weight:800}.chips a:hover{border-color:#aeb9c0;box-shadow:0 6px 18px rgba(15,25,35,.06)}.section-inner{margin-top:48px}.section-inner>h2,.related>h2{font-size:32px}.related{margin-top:52px}.text-link{font-weight:900}.footer-grid{grid-template-columns:1.35fr .8fr .8fr .75fr}.article.prose p{max-width:850px}@media(max-width:1050px){.footer-grid{grid-template-columns:1fr 1fr}}@media(max-width:680px){.footer-grid{grid-template-columns:1fr}}
.file-field small{font-size:11px;font-weight:600;color:#7a858e;line-height:1.35}.file-field input{padding:8px 0;border:0;background:transparent}
.search-enhanced{position:relative}.search-suggest{position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:20;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);overflow:hidden;color:var(--ink)}.search-suggest a{display:grid;grid-template-columns:100px 1fr auto;gap:12px;align-items:center;padding:11px 14px;border-bottom:1px solid var(--line)}.search-suggest a:last-child{border-bottom:0}.search-suggest a:hover{background:#f4f7f8}.search-suggest span{font-size:11px;font-weight:900;color:#78848d}.search-suggest strong{font-size:15px}.search-suggest em{font-size:11px;font-style:normal;color:#66737c}@media(max-width:680px){.search-suggest a{grid-template-columns:75px 1fr}.search-suggest em{grid-column:2}}

.brand-tools{display:flex;align-items:end;justify-content:space-between;gap:24px;margin:34px 0 12px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:16px}.model-filter{display:grid;gap:7px;min-width:min(520px,100%);font-size:12px;font-weight:900;color:#66737c}.model-filter input{min-height:48px;border:1px solid var(--line);border-radius:11px;padding:0 14px;font:inherit;color:var(--ink);background:#fff}.alpha-nav{display:flex;flex-wrap:wrap;gap:7px;justify-content:flex-end}.alpha-nav a{display:grid;place-items:center;min-width:34px;height:34px;padding:0 8px;border:1px solid var(--line);border-radius:9px;background:#f7f9fa;font-weight:900;font-size:12px}.model-group{padding-top:34px;scroll-margin-top:100px}.model-group+.model-group{border-top:1px solid var(--line);margin-top:34px}.model-group-head{display:flex;align-items:baseline;gap:12px}.model-group-head h2{font-size:31px;margin:0}.model-group-head span{font-size:12px;color:var(--muted);font-weight:800}.filter-empty{margin:30px 0;padding:20px;border:1px solid var(--line);border-radius:14px;background:#fff;font-weight:750}.model-card[hidden],.model-group[hidden]{display:none!important}@media(max-width:760px){.brand-tools{display:grid;align-items:stretch}.model-filter{min-width:0}.alpha-nav{justify-content:flex-start}}

.product-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;display:grid;gap:6px;transition:.18s}.product-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.product-card .model-brand{font-size:11px;font-weight:900;color:#77838c;letter-spacing:.1em}.product-card strong{font-size:20px;overflow-wrap:anywhere}.product-card span{color:var(--muted);font-size:14px}.product-card em{font-style:normal;font-weight:900;margin-top:10px}.product-card[hidden]{display:none!important}.spec-table{display:grid;border:1px solid var(--line);border-radius:16px;overflow:hidden;background:#fff}.spec-table>div{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding:14px 18px;border-bottom:1px solid var(--line)}.spec-table>div:last-child{border-bottom:0}.spec-table span{color:var(--muted)}.drawing-box{margin:20px 0 34px;border:1px solid var(--line);border-radius:18px;background:#fff;padding:20px}.drawing-box img{display:block;max-width:100%;height:auto;margin:auto}.drawing-box figcaption{font-size:13px;color:var(--muted);margin-top:12px}.drawing-pending{background:#f2f5f6;border-style:dashed}.drawing-pending strong{font-size:18px}.drawing-pending p{margin-bottom:0}.model-filter+ .model-grid{margin-top:20px}@media(max-width:680px){.spec-table>div{grid-template-columns:1fr}.product-card strong{font-size:18px}}
.feature-catalog{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:30px}.feature-catalog>a{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;display:grid;gap:8px}.feature-catalog>a:hover{box-shadow:var(--shadow);transform:translateY(-2px)}.feature-catalog span{font-size:13px;font-weight:950;letter-spacing:.14em}.feature-catalog strong{font-size:34px;line-height:1.1}.feature-catalog em{font-style:normal;color:var(--muted);font-weight:800}@media(max-width:680px){.feature-catalog{grid-template-columns:1fr}}


/* V4: server-side technical size filters */
.hero-points a{border:1px solid rgba(177,211,255,.70);border-radius:999px;padding:8px 12px;color:var(--accent);font-size:13px;font-weight:900}.size-filter{margin:30px 0;background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 12px 32px rgba(15,25,35,.05)}.size-filter-head{display:flex;justify-content:space-between;align-items:start;gap:20px;margin-bottom:20px}.size-filter-head>div{display:grid;gap:3px}.size-filter-head strong{font-size:22px}.size-filter-head span{color:var(--muted);font-size:13px}.size-filter-head>a,.filter-result-head>a{font-weight:900;font-size:13px;text-decoration:underline}.size-filter-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.size-filter label{display:grid;gap:7px;font-size:12px;font-weight:900;color:#65717a}.size-filter input,.size-filter select{width:100%;min-height:46px;border:1px solid var(--line);border-radius:10px;padding:0 12px;background:#fff;color:var(--ink);font:inherit}.range-field>div{display:grid;grid-template-columns:1fr 1fr;gap:8px}.size-filter-actions{display:flex;align-items:center;gap:18px;margin-top:20px}.size-filter-actions>span{font-size:12px;color:var(--muted);max-width:600px}.filter-result-head{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 0;border-bottom:1px solid var(--line);margin-bottom:10px}.filter-result-head>div{display:grid}.filter-result-head strong{font-size:20px}.filter-result-head span{font-size:13px;color:var(--muted)}@media(max-width:1000px){.size-filter-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:620px){.size-filter{padding:16px}.size-filter-grid{grid-template-columns:1fr}.size-filter-head,.size-filter-actions,.filter-result-head{display:grid}.range-field>div{grid-template-columns:1fr 1fr}}
.feature-catalog-many{grid-template-columns:repeat(3,1fr)}
.feature-catalog-many>a{min-height:150px}
@media(max-width:1050px){.feature-catalog-many{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.feature-catalog-many{grid-template-columns:1fr}}
.drawing-gallery{display:grid;gap:16px}.drawing-gallery .drawing-box{margin:0}.drawing-gallery img{max-height:760px;object-fit:contain}

/* V6: module landings, product data quality and contextual requests */
.form-context{display:grid;gap:2px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#f5f8f9}.form-context span{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:900}.form-context strong{font-size:14px;overflow-wrap:anywhere}
.catalog-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:20px 0 26px}.catalog-stats>div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;display:grid;gap:4px}.catalog-stats span{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-weight:900}.catalog-stats strong{font-size:18px;overflow-wrap:anywhere}
.module-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:30px 0}.module-grid>a{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;display:grid;gap:5px;transition:.18s}.module-grid>a:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.module-grid span{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:var(--muted);font-weight:900}.module-grid strong{font-size:25px}.module-grid em{font-style:normal;font-size:13px;font-weight:850}
.data-quality{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:18px 0 36px;padding:16px 18px;border:1px solid var(--line);border-radius:14px;background:#f8fafb}.data-quality>div{display:grid;gap:4px}.data-quality span{font-size:12px;color:var(--muted)}.copy-specs{border:0;border-radius:10px;padding:11px 14px;background:var(--dark);color:#fff;font-weight:900;cursor:pointer;white-space:nowrap}.copy-specs.copied{background:#2d713f}
.range-summary{display:flex;flex-wrap:wrap;gap:10px;margin:20px 0}.range-summary span{display:inline-flex;gap:5px;padding:9px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;font-size:13px}
@media(max-width:900px){.catalog-stats,.module-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:620px){.catalog-stats,.module-grid{grid-template-columns:1fr}.data-quality{display:grid}.copy-specs{width:100%}}

/* V6: drawing + exact parametric specification visualization */
.product-media-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.85fr);gap:18px;align-items:start;margin:22px 0 34px}
.product-media-grid .drawing-gallery{display:grid;grid-template-columns:1fr;gap:16px;margin:0}
.spec-visual-box{position:sticky;top:104px}
.spec-visual-box img{width:100%;height:auto;display:block;background:#fff;border-radius:12px}
.spec-visual-box figcaption{font-size:13px;line-height:1.55;color:#5c6870;margin-top:10px}
.spec-visual-box figcaption strong{color:#27323a}
@media(max-width:900px){.product-media-grid{grid-template-columns:1fr}.spec-visual-box{position:static}}

/* V6: original technical article visuals */
.article-card{overflow:hidden}
.article-thumb{width:calc(100% + 48px);max-width:none;height:155px;object-fit:cover;margin:-24px -24px 8px;display:block;border-bottom:1px solid var(--line)}
.article-hero-image{margin:30px 0 38px}
.article-hero-image img{width:100%;height:auto;display:block;border-radius:18px;box-shadow:var(--shadow)}
.article-hero-image figcaption{font-size:13px;color:var(--muted);margin-top:9px}

/* V6 contact page */
.contact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.contact-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;box-shadow:var(--shadow)}
.contact-card>span{display:block;font-size:12px;text-transform:uppercase;letter-spacing:.08em;font-weight:900;color:#7a858e;margin-bottom:10px}
.contact-value{display:block;font-size:22px;font-weight:900;line-height:1.2;word-break:break-word}
.contact-card p{color:var(--muted);font-size:14px;margin:10px 0 0}
@media(max-width:1000px){.contact-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.contact-grid{grid-template-columns:1fr}}

/* V6 homepage visual identity and related projects */
.hero{background-image:linear-gradient(90deg,rgba(10,17,23,.97) 0%,rgba(13,23,30,.88) 38%,rgba(14,24,31,.50) 68%,rgba(14,24,31,.36) 100%),url('/assets/images/hero-opu.webp');background-size:cover;background-position:center center;background-repeat:no-repeat}
.hero .hero-grid{min-height:610px;align-items:center}
.hero-panel{background:rgba(255,255,255,.96);backdrop-filter:blur(12px)}
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:28px}
.project-grid>a{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px;display:grid;gap:10px;transition:.18s}
.project-grid>a:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.project-grid strong{font-size:21px}.project-grid span{color:var(--muted)}.project-grid em{font-style:normal;font-weight:900;margin-top:8px}
@media(max-width:900px){.project-grid{grid-template-columns:1fr}.hero .hero-grid{min-height:auto}}

/* V8: knowledge hubs, stronger editorial interlinking and regional SEO */
.knowledge-hubs{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:32px 0 46px}.knowledge-hub{display:grid;gap:7px;min-height:155px;padding:24px;border:1px solid var(--line);border-radius:18px;background:#fff;transition:.18s}.knowledge-hub:hover{transform:translateY(-2px);box-shadow:var(--shadow)}.knowledge-hub>span{font-size:11px;text-transform:uppercase;letter-spacing:.1em;color:#77838c;font-weight:950}.knowledge-hub>strong{font-size:22px;line-height:1.2}.knowledge-hub>em{font-style:normal;font-weight:900;margin-top:auto}.article-grid-compact .article-card strong{font-size:19px}.knowledge-strip{padding-top:0}.knowledge-strip .article-grid{grid-template-columns:repeat(4,1fr)}.city-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.city-grid .tile{min-height:110px}.city-grid .tile strong{font-size:18px}.city-grid .tile span{font-size:12px}.hero-points a{transition:.18s}.hero-points a:hover{background:rgba(177,211,255,.18)}
@media(max-width:1050px){.knowledge-hubs{grid-template-columns:repeat(2,1fr)}.knowledge-strip .article-grid,.city-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.knowledge-hubs,.knowledge-strip .article-grid,.city-grid{grid-template-columns:1fr}}

/* V9: nationwide SEO navigation */
.footer-cities{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;margin-top:30px;padding-top:20px;border-top:1px solid rgba(255,255,255,.10);font-size:13px;color:#9aa7b0}.footer-cities strong{color:#dce3e7}.footer-cities a{color:#b8c4cb}.footer-cities a:hover{color:#fff}.russia-strip .chips{margin-top:8px}.russia-strip .muted{margin-top:16px;color:var(--muted);font-size:13px}
@media(max-width:1050px) and (min-width:681px){.footer-grid{grid-template-columns:repeat(2,1fr)}}


/* V11: conversion, real-drawing viewer and mobile product UX */
.lead-form{scroll-margin-top:110px}.lead-form input:focus,.lead-form textarea:focus,.size-filter input:focus,.size-filter select:focus,.search-box input:focus{outline:3px solid rgba(177,211,255,.35);border-color:#8fbbea}.lead-form button:disabled{opacity:.6;cursor:wait}.lead-form-compact .compact-optional{display:none}.lead-form-compact .form-grid{grid-template-columns:1fr 1fr}.lead-form-compact .file-field small{display:block}.quote-card{border:1px solid rgba(17,25,35,.08)}
.request-checklist{background:#101923;color:#fff;padding:56px 0}.request-checklist-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:26px}.request-checklist-head h2{margin:0}.request-checklist .eyebrow{color:#aebac4}.request-checklist-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.request-checklist-grid>div{border:1px solid rgba(255,255,255,.13);border-radius:16px;padding:20px;display:grid;gap:8px;background:rgba(255,255,255,.035)}.request-checklist-grid b{color:var(--accent);font-size:13px}.request-checklist-grid strong{font-size:18px}.request-checklist-grid span{font-size:13px;color:#b7c3ca}
.media-card{position:relative;overflow:hidden}.media-badge{position:absolute;top:12px;left:12px;z-index:2;background:#101923;color:#fff;border-radius:999px;padding:7px 10px;font-size:11px;font-weight:900;letter-spacing:.03em;box-shadow:0 6px 18px rgba(0,0,0,.18)}.media-badge-generated{background:var(--accent);color:#101923}.media-open{display:block;width:100%;border:0;background:#fff;padding:0;cursor:zoom-in}.media-open img{transition:transform .2s}.media-open:hover img{transform:scale(1.012)}.media-lightbox{position:fixed;inset:0;z-index:100;background:rgba(6,10,14,.94);display:grid;grid-template-rows:auto 1fr;align-items:center;padding:18px}.media-lightbox[hidden]{display:none}.media-lightbox-top{display:flex;justify-content:flex-end}.media-lightbox-close{border:1px solid rgba(255,255,255,.2);background:#fff;color:#111;border-radius:999px;width:44px;height:44px;font-size:25px;cursor:pointer}.media-lightbox-stage{min-height:0;display:grid;place-items:center;overflow:auto}.media-lightbox img{max-width:min(1500px,96vw);max-height:88vh;width:auto;height:auto;background:#fff;border-radius:10px;box-shadow:0 20px 60px rgba(0,0,0,.38)}body.media-lock{overflow:hidden}
.mobile-product-cta{display:none}.product-hero .quote-card .lead-form{scroll-margin-top:100px}
@media(max-width:900px){.request-checklist-grid{grid-template-columns:repeat(2,1fr)}.lead-form-compact .form-grid{grid-template-columns:1fr 1fr}}
@media(max-width:680px){body:has(.mobile-product-cta){padding-bottom:74px}.lead-form-compact .form-grid{grid-template-columns:1fr}.request-checklist{padding:42px 0}.request-checklist-head{display:grid;align-items:start}.request-checklist-grid{grid-template-columns:1fr}.mobile-product-cta{position:fixed;z-index:60;left:0;right:0;bottom:0;display:grid;grid-template-columns:.72fr 1.28fr;gap:8px;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:9px 12px max(9px,env(safe-area-inset-bottom));box-shadow:0 -12px 32px rgba(15,25,35,.12)}.mobile-product-cta .btn{min-height:48px}.mobile-product-call{display:grid;place-items:center;border:1px solid var(--line);border-radius:12px;font-weight:900;background:#fff}.media-lightbox{padding:8px}.media-lightbox img{max-width:98vw;max-height:82vh}.product-media-grid{gap:12px}.drawing-box{padding:12px}.media-badge{top:8px;left:8px}}


/* V12.1 HOTFIX: desktop header + visible e-mail + contacts navigation */
.site-header .topbar{width:min(1480px,calc(100% - 32px));gap:18px}
.site-header .nav{gap:15px}
.site-header .nav a{font-size:13px;white-space:nowrap;line-height:1.15}
.site-header .header-cta{gap:10px;flex:0 0 auto}
.site-header .brand{flex:0 0 auto}
.site-header .phone{font-size:15px}
.lead-form-compact .form-grid>label{display:grid}
.lead-form-compact .form-grid>.serial-field{display:none}
.lead-form-compact .form-grid>.email-field{display:grid}
@media(max-width:1320px){
  .site-header .nav{display:none;position:absolute;top:82px;left:0;right:0;background:#fff;padding:20px;box-shadow:var(--shadow);flex-direction:column;gap:0}
  .site-header .nav.open{display:flex}
  .site-header .nav a{padding:11px 4px;border-bottom:1px solid var(--line);font-size:14px}
  .site-header .menu-toggle{display:block}
  .site-header .header-cta .phone{display:none}
}
@media(max-width:680px){
  .site-header .topbar{width:min(100% - 24px,1480px)}
}


/* V12.6: compact header contacts, brand filters, blue design system */
.header-phones{display:grid;gap:2px;justify-items:end;line-height:1.1}.header-alt-contact{display:flex;align-items:center;justify-content:flex-end;gap:6px}.phone-alt{font-size:12px;color:#526170;font-weight:850}.messenger-link{width:27px;height:27px;border-radius:50%;display:grid;place-items:center;border:1px solid var(--line);background:#fff;transition:.16s}.messenger-link:hover{background:var(--accent);border-color:var(--accent)}.messenger-link svg{width:15px;height:15px;fill:#101923}.header-cta{gap:10px}.header-cta .btn{white-space:nowrap}.nav{gap:16px}.nav a{white-space:nowrap}.topbar{gap:18px}
.equipment-brand-filter{margin:28px 0 34px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;display:grid;gap:14px}.equipment-brand-filter-head{display:flex;align-items:end;justify-content:space-between;gap:18px}.equipment-brand-filter-head>div{display:grid;gap:6px}.equipment-brand-filter-head strong{display:block;font-size:22px;line-height:1.2}.equipment-brand-filter-head span{display:block;font-size:13px;line-height:1.35;color:var(--muted)}.equipment-brand-chips{display:flex;flex-wrap:wrap;gap:8px}.equipment-brand-chips a{padding:8px 12px;border-radius:999px;border:1px solid var(--line);background:#f8fafb;font-size:13px;font-weight:850}.equipment-brand-chips a:hover,.equipment-brand-chips a[aria-current="true"]{border-color:#8cbcff;background:var(--accent);color:#101923}.equipment-brand-select{display:flex;align-items:center;gap:8px}.equipment-brand-select select{min-height:44px;border:1px solid var(--line);border-radius:10px;padding:0 12px;background:#fff;color:var(--ink);font:inherit;font-weight:750}.filter-summary{font-size:14px;color:var(--muted);margin:-12px 0 22px}.filter-summary strong{color:var(--ink)}
.oem-badge{display:inline-flex;width:max-content;max-width:100%;padding:5px 9px;border-radius:8px;background:var(--accent);font-size:12px!important;color:#101923!important;font-weight:950!important;letter-spacing:.02em}.oem-unverified{background:#eef2f4;color:#68747d!important}.original-card .oem-line{font-size:12px;color:#526170;font-weight:850}.original-card strong{overflow-wrap:anywhere}
@media(max-width:1320px){.nav{gap:12px}.nav a{font-size:13px}.phone-main{font-size:13px}.phone-alt{display:none}.header-cta{gap:8px}.topbar{gap:14px}}
@media(max-width:1160px){.nav{display:none;position:absolute;top:82px;left:0;right:0;background:#fff;padding:20px;box-shadow:var(--shadow);flex-direction:column}.nav.open{display:flex}.menu-toggle{display:block}.header-cta .phone-main{display:none}.header-phones{display:block}.header-alt-contact{gap:5px}}
@media(max-width:760px){.header-cta .btn{display:none}.header-alt-contact .phone-alt{display:none}.messenger-link{width:34px;height:34px}.equipment-brand-filter-head{display:grid;align-items:start}.equipment-brand-select{display:grid}.equipment-brand-select select{width:100%}}

/* V12.7 — original OEM catalog cards */
.original-facts{margin-top:24px}
.original-catalog-media{padding-top:34px}
.original-media-grid{align-items:start}
.original-media-grid .drawing-gallery{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.original-media-grid .drawing-box{min-height:100%}
.catalog-meta-table{display:grid;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;margin:18px 0 28px}
.catalog-meta-table>div{display:grid;grid-template-columns:minmax(180px,.8fr) minmax(0,1.2fr);gap:18px;padding:13px 16px;border-bottom:1px solid var(--line);align-items:center}
.catalog-meta-table>div:last-child{border-bottom:0}
.catalog-meta-table span{color:var(--muted);font-size:14px}
.catalog-meta-table strong{font-size:15px;overflow-wrap:anywhere}
.original-card .original-card-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px;color:var(--muted);font-size:12px;font-style:normal}
.original-card .original-card-meta b{font-weight:600;color:var(--ink)}
@media(max-width:720px){
  .catalog-meta-table>div{grid-template-columns:1fr;gap:4px;padding:12px 14px}
  .original-media-grid .drawing-gallery{grid-template-columns:1fr}
}

/* V12.7.2: strict media top alignment */
.product-media-grid{align-items:start}
.product-media-grid > .drawing-gallery,.product-media-grid > .spec-visual-box{margin-top:0!important;align-self:start!important}
.product-media-grid > .spec-visual-box{position:static!important;top:auto!important;margin:0!important}


/* V12.7.3: original catalog positions on standard model pages */
.lead-on-dark{color:#c7d4de;max-width:980px;margin-top:-8px;margin-bottom:24px}
.original-home-grid a{display:grid;gap:6px}.original-home-grid a>strong{font-size:20px}.original-home-grid a>em{font-style:normal;font-size:12px;color:var(--accent)}
.model-original-section{background:#f5f8fa;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.catalog-position-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:24px}
.catalog-position-card{display:grid;grid-template-columns:150px minmax(0,1fr);min-height:190px;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:0 10px 30px rgba(15,25,35,.05);transition:.16s}
.catalog-position-card:hover{transform:translateY(-2px);border-color:#8fbbea;box-shadow:0 16px 34px rgba(15,25,35,.09)}
.catalog-position-image{display:grid;place-items:center;background:#f6f8f9;border-right:1px solid var(--line);padding:10px;min-height:188px}.catalog-position-image img{width:100%;height:100%;max-height:180px;object-fit:contain;background:#fff}
.catalog-position-body{padding:16px;display:flex;flex-direction:column;align-items:flex-start;gap:8px;min-width:0}.catalog-position-body small{color:var(--muted);font-weight:800}.catalog-position-body>strong{font-size:18px;overflow-wrap:anywhere}.catalog-position-body>em{margin-top:auto;font-size:12px;font-style:normal;font-weight:850;color:#376a9e}
.catalog-position-meta{display:grid;gap:4px;color:#526170;font-size:12px}.catalog-position-meta i{font-style:normal}.catalog-position-meta b{color:#101923}
.catalog-position-card:not(:has(.catalog-position-image)){grid-template-columns:1fr}
@media(max-width:1120px){.catalog-position-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.catalog-position-grid{grid-template-columns:1fr}.catalog-position-card{grid-template-columns:112px minmax(0,1fr);min-height:150px}.catalog-position-image{min-height:148px}.catalog-position-body{padding:13px}.original-home-grid a>strong{font-size:18px}}

/* V12.7.4 model imagery */
.model-card-with-image{padding:0;overflow:hidden;align-content:start}.model-card-with-image>.model-brand,.model-card-with-image>strong,.model-card-with-image>span:not(.model-card-image),.model-card-with-image>em{margin-left:22px;margin-right:22px}.model-card-with-image>em{margin-bottom:22px}.model-card-image{position:relative;display:block!important;margin:0!important;width:100%;aspect-ratio:16/9;background:#eef3f6;border-bottom:1px solid var(--line);overflow:hidden}.model-card-image img{width:100%;height:100%;object-fit:contain;display:block}.model-card-image small{position:absolute;left:10px;bottom:10px;background:rgba(16,25,35,.82);color:#fff;border-radius:999px;padding:5px 8px;font-size:10px;font-weight:800}.model-hero-photo{margin:28px 0 4px;background:#fff;border:1px solid rgba(255,255,255,.14);border-radius:18px;overflow:hidden;max-width:760px}.model-hero-photo img{display:block;width:100%;max-height:430px;object-fit:contain;background:#f4f7f9}.model-hero-photo figcaption{padding:11px 14px;background:#fff;color:#5c6872;font-size:12px;line-height:1.4}@media(max-width:680px){.model-card-with-image>.model-brand,.model-card-with-image>strong,.model-card-with-image>span:not(.model-card-image),.model-card-with-image>em{margin-left:18px;margin-right:18px}.model-card-with-image>em{margin-bottom:18px}}