:root{--bg:#07101f;--panel:#0d1a2e;--panel2:#10213a;--line:#213654;--text:#f4f8ff;--muted:#9eacc0;--blue:#2f80ff;--cyan:#4ed8ff;--max:1180px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 Inter,Arial,sans-serif}a{color:inherit}.container{width:min(var(--max),calc(100% - 40px));margin:auto}.header{position:sticky;top:0;z-index:20;background:rgba(7,16,31,.9);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.header__inner{height:76px;display:flex;align-items:center;justify-content:space-between}.logo{text-decoration:none;font-weight:800;letter-spacing:.11em;font-size:20px}.logo span{color:var(--cyan)}.nav{display:flex;align-items:center;gap:30px}.nav>a:not(.button){text-decoration:none;color:#c9d3e2}.nav>a:hover{color:#fff}.menu-button{display:none;background:none;border:1px solid var(--line);color:#fff;border-radius:8px;padding:8px 12px}.button{display:inline-flex;justify-content:center;align-items:center;border:0;border-radius:8px;padding:14px 22px;background:linear-gradient(135deg,var(--blue),#1265e8);color:white;font:inherit;font-weight:700;text-decoration:none;cursor:pointer;box-shadow:0 12px 32px rgba(47,128,255,.2)}.button:hover{filter:brightness(1.1)}.button--small{padding:10px 16px}.hero{padding:96px 0 84px;background:radial-gradient(circle at 70% 30%,rgba(31,111,255,.2),transparent 35%)}.hero__grid{display:grid;grid-template-columns:1.25fr .75fr;gap:72px;align-items:center}.eyebrow{margin-bottom:14px;color:var(--cyan);font-size:13px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.hero h1,.product-hero h1{font-size:clamp(42px,6vw,72px);line-height:1.05;letter-spacing:-.04em;margin:0 0 26px;max-width:950px}h2{font-size:clamp(32px,4vw,48px);line-height:1.12;letter-spacing:-.03em;margin:0 0 28px}h3{line-height:1.25}.lead{font-size:20px;color:#bfcbda;max-width:780px}.hero__actions{display:flex;align-items:center;gap:28px;margin:34px 0}.text-link{color:var(--cyan);font-weight:700;text-decoration:none}.checks{display:flex;flex-wrap:wrap;gap:12px 26px;padding:0;margin:38px 0 0;list-style:none;color:#c7d2e1}.checks li:before{content:'✓';color:var(--cyan);margin-right:8px}.hero-card{padding:30px;background:linear-gradient(145deg,rgba(23,47,82,.95),rgba(10,24,43,.95));border:1px solid #2a4569;border-radius:20px;box-shadow:0 30px 80px rgba(0,0,0,.35)}.board{height:260px;position:relative;border:1px solid #2e5a85;border-radius:13px;background:linear-gradient(90deg,transparent 49%,#1f3f62 50%,transparent 51%),linear-gradient(transparent 49%,#1f3f62 50%,transparent 51%);background-size:48px 48px;display:flex;align-items:center;justify-content:center;gap:18px}.board i{position:absolute;width:13px;height:13px;background:var(--cyan);border-radius:50%;box-shadow:0 0 22px var(--cyan)}.board i:nth-child(1){left:12%;top:20%}.board i:nth-child(2){right:14%;top:18%}.board i:nth-child(3){left:22%;bottom:18%}.board i:nth-child(4){right:28%;bottom:14%}.board i:nth-child(5){left:46%;top:12%}.board i:nth-child(6){right:8%;bottom:38%}.board b{font-size:28px}.hero-card p{color:var(--muted);margin:24px 0 0}.hero-card>strong{font-size:25px}.section{padding:92px 0}.section--alt{background:#0a1628;border-block:1px solid var(--line)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px}.search input{width:330px;max-width:100%;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:#0c192c;color:white;font:inherit}.catalog{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.product{padding:26px;background:var(--panel);border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;transition:.2s}.product:hover{transform:translateY(-3px);border-color:#3b6597}.product__top{display:flex;justify-content:space-between;gap:10px;color:var(--cyan);font-size:12px;text-transform:uppercase;letter-spacing:.08em}.product__top em{color:#7f91a8;font-style:normal}.product h3{font-size:20px;margin:23px 0 8px}.product p{color:var(--muted)}.product__article{color:#e4ebf5!important;font-weight:700}.product a{margin-top:auto;padding-top:14px;color:var(--cyan);text-decoration:none;font-weight:700}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.steps>div{padding:25px;border-left:2px solid var(--blue);background:var(--panel)}.steps b{color:var(--cyan)}.steps h3{margin:14px 0 8px}.steps p{color:var(--muted);margin:0}.about{display:grid;grid-template-columns:1fr 1fr;gap:70px}.about p{color:var(--muted)}.request{background:linear-gradient(135deg,#0d203b,#081426)}.request__grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.contacts{display:flex;flex-direction:column;gap:8px;margin-top:30px}.contacts a{font-size:20px;font-weight:700;text-decoration:none;color:var(--cyan)}.form{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding:30px;background:rgba(7,16,31,.7);border:1px solid var(--line);border-radius:14px}.form label{display:flex;flex-direction:column;gap:7px;font-size:14px;color:#c5d0df}.form input,.form textarea{width:100%;padding:13px 14px;background:#07111f;color:white;border:1px solid #29405f;border-radius:7px;font:inherit}.form input:focus,.form textarea:focus{outline:2px solid var(--blue);border-color:transparent}.form__wide{grid-column:1/-1}.file{padding:15px;border:1px dashed #3b577b;border-radius:8px}.file input{padding:5px;border:0}.file small{color:var(--muted)}.consent{flex-direction:row!important;align-items:flex-start}.consent input{width:18px;margin-top:4px}.consent a{color:var(--cyan)}.form-status{margin:0}.form-status.success{color:#5fe3a1}.form-status.error{color:#ff7f91}.trap{position:absolute!important;left:-9999px!important}.product-hero{padding:92px 0 60px;background:radial-gradient(circle at 70% 0,rgba(47,128,255,.22),transparent 42%)}.product-hero .back{display:inline-block;margin-bottom:42px;color:var(--muted);text-decoration:none}.product-hero .article{font-size:18px}.chips{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 34px}.chips span{padding:8px 12px;background:var(--panel2);border:1px solid var(--line);border-radius:999px;color:#c8d4e4}.footer{border-top:1px solid var(--line);padding:32px 0;color:var(--muted)}.footer__inner{display:flex;justify-content:space-between;align-items:center;gap:20px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.empty{padding:22px;background:var(--panel);color:var(--muted)}
.catalog-shell{display:grid;grid-template-columns:260px minmax(0,1fr);gap:28px;align-items:start}.catalog-shell .catalog{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-menu{position:sticky;top:96px;padding:14px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.catalog-menu button{width:100%;display:flex;justify-content:space-between;gap:10px;padding:10px 12px;border:0;border-radius:7px;background:transparent;color:#b9c6d8;font:inherit;text-align:left;cursor:pointer}.catalog-menu button:hover,.catalog-menu button.active{background:#18345a;color:#fff}.catalog-menu button span{color:#7590b2;font-size:13px}.catalog-menu__all{font-weight:800;margin-bottom:8px}.catalog-menu__group{padding-top:10px;border-top:1px solid var(--line);margin-top:10px}.catalog-menu__section{font-weight:800;color:#eaf2ff!important}.catalog-menu__children{padding-left:10px}.catalog-menu__children button{font-size:14px}.product__media{height:180px;margin:-26px -26px 22px;display:flex;align-items:center;justify-content:center;overflow:hidden;border-radius:12px 12px 0 0;background:linear-gradient(145deg,#132845,#091729);text-decoration:none}.product__media img{width:100%;height:100%;object-fit:contain;background:#fff}.product__media span{color:#7890ad;font-size:14px}.product-gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:34px 0}.product-gallery a,.product-gallery__empty{height:260px;display:flex;align-items:center;justify-content:center;overflow:hidden;border:1px solid var(--line);border-radius:12px;background:#fff}.product-gallery img{width:100%;height:100%;object-fit:contain}.product-gallery__empty{grid-column:1/-1;background:var(--panel);color:var(--muted)}
@media(max-width:900px){.hero__grid,.request__grid,.about{grid-template-columns:1fr}.hero-card{display:none}.catalog-shell{grid-template-columns:1fr}.catalog-menu{position:static;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.catalog-menu__all{grid-column:1/-1;margin:0}.catalog-menu__group{margin:0}.catalog{grid-template-columns:repeat(2,1fr)}.steps{grid-template-columns:repeat(2,1fr)}.section-head{align-items:flex-start;flex-direction:column}.search,.search input{width:100%}.product-gallery a,.product-gallery__empty{height:210px}}
@media(max-width:680px){.container{width:min(100% - 28px,var(--max))}.header__inner{height:66px}.menu-button{display:block}.nav{display:none;position:absolute;top:66px;left:0;right:0;padding:22px;background:#07101f;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch}.nav.open{display:flex}.hero{padding:68px 0}.hero h1,.product-hero h1{font-size:40px}.section{padding:68px 0}.catalog-menu{grid-template-columns:1fr}.catalog,.steps,.form,.product-gallery{grid-template-columns:1fr}.product-gallery a,.product-gallery__empty{height:240px}.form{padding:20px}.form__wide{grid-column:auto}.footer__inner{flex-direction:column;align-items:flex-start}.hero__actions{align-items:flex-start;flex-direction:column}.checks{display:block}.checks li{margin:8px 0}}

/* Compact catalog */
.catalog-filters{display:grid;grid-template-columns:minmax(220px,1fr) minmax(220px,1fr) auto auto;gap:12px;align-items:end;margin:10px 0 24px;padding:16px;background:linear-gradient(135deg,#0d1c32,#0a1729);border:1px solid var(--line);border-radius:14px}.catalog-filters label{display:flex;flex-direction:column;gap:6px}.catalog-filters label span{color:#8fa2bb;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.08em}.catalog-filters select{width:100%;height:46px;padding:0 42px 0 14px;border:1px solid #2a4569;border-radius:9px;background:#081528;color:#edf5ff;font:inherit;cursor:pointer}.catalog-filters select:focus{outline:2px solid var(--blue);border-color:transparent}.catalog-reset{height:46px;padding:0 17px;border:1px solid #2a4569;border-radius:9px;background:transparent;color:#c6d3e3;font:inherit;cursor:pointer}.catalog-reset:hover{border-color:var(--cyan);color:#fff}.catalog-count{min-width:86px;height:46px;display:flex;flex-direction:column;justify-content:center;padding-left:14px;border-left:1px solid var(--line)}.catalog-count strong{font-size:19px;line-height:1;color:var(--cyan)}.catalog-count span{font-size:10px;color:#8294aa;white-space:nowrap}.catalog-shell{display:block}.catalog-shell .catalog,.catalog{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.product{min-width:0;padding:14px;border-radius:14px;overflow:hidden}.product:hover{transform:translateY(-4px);box-shadow:0 16px 36px rgba(0,0,0,.22)}.product__media{height:170px;margin:-14px -14px 14px;border-radius:14px 14px 0 0}.product__top{align-items:center;gap:8px;font-size:10px;letter-spacing:.06em}.product__top span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.product__top em{flex:0 0 auto}.product h3{font-size:16px;line-height:1.35;margin:12px 0 6px;min-height:43px}.product h3 a{margin:0;padding:0;color:var(--text);text-decoration:none}.product__article{margin:0;color:#aebdd0!important;font-size:13px;line-height:1.4;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.product__link{margin-top:auto!important;padding-top:12px!important;font-size:13px}.product[hidden]{display:none}
@media(max-width:1050px){.catalog-shell .catalog,.catalog{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:900px){.catalog-filters{grid-template-columns:1fr 1fr auto}.catalog-count{display:none}.catalog-shell .catalog,.catalog{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:680px){.catalog-filters{grid-template-columns:1fr 1fr}.catalog-reset{grid-column:1/-1}.catalog-shell .catalog,.catalog{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.product{padding:10px}.product__media{height:145px;margin:-10px -10px 12px}.product__top em{display:none}.product h3{font-size:14px;min-height:57px}.product-gallery{grid-template-columns:1fr}.form{grid-template-columns:1fr}}
@media(max-width:420px){.catalog-filters{grid-template-columns:1fr}.catalog-reset{grid-column:auto}.catalog-shell .catalog,.catalog{gap:10px}.product__media{height:128px}.product__top{font-size:9px}.product h3{font-size:13px}.product__article,.product__link{font-size:12px}}

/* Product image failures and selectable variants */
.image-fallback{display:none;padding:24px;color:#91a5bf!important;font-size:13px!important;font-weight:600;text-align:center}.product-gallery [data-image-frame]{background:linear-gradient(145deg,#12243d,#0a1729)}.image-error{background:linear-gradient(145deg,#12243d,#0a1729)!important}.image-error .image-fallback{display:block}.variant-picker{max-width:620px;margin:0 0 30px;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.variant-picker label{display:block;margin-bottom:8px;color:#dce7f5;font-weight:700}.variant-picker select{width:100%;padding:13px 42px 13px 14px;border:1px solid #2a4569;border-radius:8px;background:#081528;color:#fff;font:inherit;cursor:pointer}.variant-picker select:focus{outline:2px solid var(--blue);border-color:transparent}
.hero__grid{display:block}.hero__grid>div:first-child{max-width:1000px}
.product-gallery{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}

/* Cable assembly constructor */
.constructor-hero{padding:76px 0 42px;background:radial-gradient(circle at 72% 10%,rgba(78,216,255,.18),transparent 34%)}.constructor-hero h1{max-width:920px;margin:0 0 20px;font-size:clamp(40px,6vw,68px);line-height:1.05;letter-spacing:-.04em}.constructor-section{padding-top:32px}.constructor-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:24px;align-items:start}.constructor{display:grid;gap:20px}.constructor fieldset{min-width:0;margin:0;padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--panel)}.constructor legend{padding:0 10px;font-size:20px;font-weight:800}.constructor legend span{display:inline-grid;place-items:center;width:30px;height:30px;margin-right:8px;border-radius:50%;background:var(--blue);font-size:14px}.constructor-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.constructor label{display:flex;flex-direction:column;gap:7px;color:#cbd6e5;font-size:14px}.constructor select,.constructor input[type=number]{width:100%;min-height:48px;padding:11px 42px 11px 13px;border:1px solid #2a4569;border-radius:8px;background:#081528;color:#fff;font:inherit}.constructor select:focus,.constructor input:focus{outline:2px solid var(--blue);border-color:transparent}.ends-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}.cable-end{display:grid;align-content:start;gap:15px}.check-row{display:flex!important;flex-direction:row!important;align-items:center;gap:10px!important;padding:10px 0}.check-row input{width:18px;height:18px}.radio-row{display:flex;gap:24px;flex-wrap:wrap}.radio-row label{flex-direction:row;align-items:center}.spec-panel{position:sticky;top:98px;padding:26px;border:1px solid #2d527a;border-radius:16px;background:linear-gradient(145deg,#102540,#09172a);box-shadow:0 28px 70px rgba(0,0,0,.28)}.spec-panel__head{display:flex;justify-content:space-between;gap:12px;align-items:center;color:#9fb0c6;font-size:13px}.spec-panel__head b{padding:5px 8px;border-radius:6px;background:#3b2930;color:#ffb6c0;text-align:center}.spec-panel__head b.is-known{background:#153b33;color:#7ce7bd}.spec-panel h2{font-size:30px;margin:20px 0}.spec-panel dl{margin:0 0 20px}.spec-panel dl div{padding:12px 0;border-top:1px solid var(--line)}.spec-panel dt{color:#8195ae;font-size:12px;text-transform:uppercase;letter-spacing:.07em}.spec-panel dd{margin:4px 0 0;color:#edf5ff;font-weight:700}.spec-panel p{color:#9fb0c6;font-size:14px}.spec-panel .button{width:100%;margin-top:8px}.seo-copy p{max-width:980px;color:#b7c5d6}.seo-copy h3{margin-top:34px}.seo-terms{line-height:1.9}.constructor-promo__inner{display:grid;grid-template-columns:1fr auto;gap:38px;align-items:center}.constructor-promo h2{margin-bottom:12px}.constructor-promo p{max-width:780px;margin:0;color:#aebdd0}.product-aliases{max-width:900px;margin:34px 0;padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:12px}.product-aliases h2{font-size:24px;margin:0 0 15px}.product-aliases ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 28px;margin:0;padding-left:20px;color:#c8d4e4}
@media(max-width:900px){.constructor-layout{grid-template-columns:1fr}.spec-panel{position:static}.constructor-promo__inner{grid-template-columns:1fr}.constructor-promo .button{justify-self:start}}
@media(max-width:680px){.constructor-grid,.ends-grid,.product-aliases ul{grid-template-columns:1fr}.constructor fieldset{padding:18px}.radio-row{display:grid;gap:12px}.constructor-hero{padding-top:54px}}
.button:disabled{cursor:not-allowed;filter:grayscale(.5);opacity:.5;box-shadow:none}.form label small{color:var(--muted);font-size:12px;line-height:1.4}.constructor option:disabled{color:#748196}
.constructor [hidden]{display:none!important}