/* ProfiTherm — сайт v2. Один файл стилей вместо девяти. */
@font-face{font-family:"IBM Plex Sans";font-weight:400;font-display:swap;src:url(fonts/ibm-plex-sans-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:500;font-display:swap;src:url(fonts/ibm-plex-sans-500.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:600;font-display:swap;src:url(fonts/ibm-plex-sans-600.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:700;font-display:swap;src:url(fonts/ibm-plex-sans-700.woff2) format("woff2")}

:root{
  --red:#e82436;--red-d:#c81a2b;--ink:#1f2321;--text:#3a403d;--muted:#6b726f;
  --line:#e2e5e1;--bg:#f4f5f3;--white:#fff;--ok:#1d6b35;
  --r:10px;--wrap:1240px;--gut:20px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;overflow-x:clip}
body{margin:0;font:16px/1.55 "IBM Plex Sans",-apple-system,"Segoe UI",Arial,sans-serif;color:var(--text);background:var(--white);overflow-x:clip}
img{max-width:100%;height:auto;display:block}
a{color:var(--ink)}
h1,h2,h3{color:var(--ink);line-height:1.15;margin:0 0 .5em;font-weight:700;overflow-wrap:break-word}
h1{font-size:clamp(28px,4vw,40px)}
h2{font-size:clamp(23px,2.8vw,30px)}
h3{font-size:19px;font-weight:600}
p{margin:0 0 1em}
button,input,select,textarea{font:inherit;color:inherit}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:focus-visible{outline:2px solid var(--red);outline-offset:2px}

/* ---------- Кнопки ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border:0;border-radius:8px;background:var(--red);color:#fff;font-weight:600;font-size:15.5px;text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--red-d)}
.btn-line{background:#fff;color:var(--ink);border:1.5px solid var(--ink)}
.btn-line:hover{background:var(--ink);color:#fff}
.btn-lg{min-height:54px;padding:0 30px;font-size:17px}
.btn-block{width:100%}
.link{color:var(--ink);font-weight:500}
.link:hover{color:var(--red)}

/* ---------- Шапка ---------- */
.hd{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.hd-top{display:flex;align-items:center;gap:24px;height:76px}
.hd-logo img{width:150px;height:auto}
.hd-search{position:relative;flex:1 1 auto;max-width:560px}
.hd-search input{width:100%;height:46px;padding:0 48px 0 16px;border:1.5px solid #cfd4ce;border-radius:8px;background:#fff;font-size:15.5px}
.hd-search input:focus{outline:0;border-color:var(--ink)}
.hd-search-ico{position:absolute;right:6px;top:5px;width:36px;height:36px;border:0;border-radius:6px;background:var(--bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f2321' stroke-width='2.2' stroke-linecap='round'%3E%3Ccircle cx='11' cy='11' r='7'/%3E%3Cpath d='m20 20-3.5-3.5'/%3E%3C/svg%3E") no-repeat center/19px;cursor:pointer}
.hd-phone{margin-left:auto;display:flex;flex-direction:column;text-decoration:none;line-height:1.2;white-space:nowrap}
.hd-phone b{font-size:17px;color:var(--ink)}
.hd-phone small{font-size:12.5px;color:var(--muted)}
.hd-burger{display:none}
.hd-nav{display:flex;gap:4px;height:48px;align-items:center}
.hd-nav a{padding:8px 12px;border-radius:6px;text-decoration:none;font-size:15px;font-weight:500;color:var(--ink);white-space:nowrap}
.hd-nav a:hover,.hd-nav a[aria-current]{background:var(--bg)}
.hd-nav a.hd-cat{background:var(--ink);color:#fff;padding:8px 16px}
.hd-nav a.hd-cat:hover{background:#000}

/* выпадающие подсказки поиска */
.sr-box{position:absolute;left:0;right:0;top:calc(100% + 6px);background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 18px 40px #1f232126;max-height:70vh;overflow-y:auto;padding:6px 0;display:none}
.sr-box.open{display:block}
.sr-group{padding:6px 0}
.sr-group+.sr-group{border-top:1px solid var(--line)}
.sr-title{padding:6px 16px;font-size:13px;color:var(--muted);font-weight:600}
.sr-item{display:flex;align-items:center;gap:12px;padding:9px 16px;text-decoration:none;color:var(--ink)}
.sr-item:hover,.sr-item.act{background:var(--bg)}
.sr-item img{width:44px;height:44px;object-fit:contain;border-radius:6px;background:#fff;border:1px solid var(--line);flex:0 0 auto}
.sr-item span{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.sr-item b{font-size:15px;font-weight:600}
.sr-item small{font-size:13px;color:var(--muted)}
.sr-tag{flex:0 0 auto;font-style:normal;font-size:13px;font-weight:600;padding:3px 9px;border-radius:999px;background:var(--bg);white-space:nowrap}
.sr-tag.ok{background:#e6f3ea;color:var(--ok)}
.sr-note{padding:8px 16px;font-size:13px;color:var(--muted)}
.sr-empty{padding:14px 16px;font-size:14.5px}

/* ---------- Хлебные крошки ---------- */
.crumbs{display:flex;flex-wrap:wrap;gap:6px;padding-top:18px;padding-bottom:10px;font-size:14px;color:var(--muted)}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--red)}
.crumbs span[aria-hidden]{opacity:.6}

/* ---------- Секции ---------- */
.sec{padding:56px 0}
.sec-grey{background:var(--bg)}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.sec-head h2{margin:0}
.sec-head p{margin:6px 0 0;color:var(--muted)}

/* ---------- Главная ---------- */
.hero{background:var(--bg)}
.hero-in{display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;padding:48px var(--gut)}
.hero h1{font-size:clamp(32px,4.6vw,52px);margin-bottom:16px}
.hero-sub{font-size:18px;color:var(--text);max-width:520px}
.hero-btns{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 28px;margin:0;padding:0;list-style:none}
.hero-facts li{display:flex;flex-direction:column}
.hero-facts b{font-size:22px;color:var(--ink)}
.hero-facts span{font-size:14px;color:var(--muted)}
.hero-img{border-radius:14px;overflow:hidden;aspect-ratio:4/3}
.hero-img img{width:100%;height:100%;object-fit:cover}

.cats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.cat{display:grid;grid-template-columns:1fr 120px;gap:12px;align-items:center;padding:20px;border:1px solid var(--line);border-radius:var(--r);background:#fff;text-decoration:none;color:var(--text)}
.cat:hover{border-color:var(--ink)}
.cat h3{margin:0 0 4px;font-size:18px}
.cat p{margin:0;font-size:14.5px}
.cat .from{display:block;margin-top:8px;font-weight:600;color:var(--ink)}
.cat img{width:120px;height:96px;object-fit:contain}

.benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.benefit{padding:22px;border-radius:var(--r);background:#fff;border:1px solid var(--line)}
.benefit b{display:block;font-size:24px;color:var(--ink);margin-bottom:6px}
.benefit p{margin:0;font-size:15px}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;counter-reset:s}
.step{padding:22px;border-radius:var(--r);background:#fff;border:1px solid var(--line)}
.step::before{counter-increment:s;content:counter(s);display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:50%;background:var(--ink);color:#fff;font-weight:700;margin-bottom:12px}
.step h3{margin-bottom:6px}
.step p{margin:0;font-size:15px}

.arts{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.art{display:block;padding:18px;border:1px solid var(--line);border-radius:var(--r);text-decoration:none;font-weight:600;color:var(--ink);background:#fff}
.art:hover{border-color:var(--ink)}

/* ---------- Карточка в сетке ---------- */
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.pc{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:var(--r);background:#fff;overflow:hidden;transition:box-shadow .15s}
.pc:hover{box-shadow:0 10px 28px #1f23211f}
.pc-img{display:block;aspect-ratio:4/3;background:#fff;padding:12px;border-bottom:1px solid var(--line)}
.pc-img img{width:100%;height:100%;object-fit:contain}
.pc-body{display:flex;flex-direction:column;gap:8px;padding:14px 16px 16px;flex:1 1 auto}
.pc-line{font-size:13px;color:var(--muted)}
.pc-name{font-size:17px;font-weight:600;color:var(--ink);text-decoration:none;line-height:1.25}
.pc-name:hover{color:var(--red)}
.pc-specs{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.pc-specs li{font-size:13px;padding:3px 8px;border-radius:6px;background:var(--bg);color:var(--ink)}
.pc-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;padding-top:6px}
.pc-price{font-size:20px;font-weight:700;color:var(--ink);white-space:nowrap}
.pc-foot .btn{min-height:40px;padding:0 16px;font-size:14.5px}

/* ---------- Каталог ---------- */
.cat-page{display:grid;grid-template-columns:260px minmax(0,1fr);gap:28px;align-items:start;padding-bottom:56px}
.filters{position:sticky;top:140px;border:1px solid var(--line);border-radius:var(--r);padding:18px}
.filters h2{font-size:18px;margin-bottom:12px}
.f-group{border-top:1px solid var(--line);padding:14px 0}
.f-group:first-of-type{border-top:0;padding-top:0}
.f-group legend,.f-label{font-weight:600;color:var(--ink);font-size:15px;margin-bottom:8px;padding:0}
.f-group fieldset{border:0;margin:0;padding:0}
.f-check{display:flex;align-items:flex-start;gap:10px;padding:5px 0;font-size:15px;cursor:pointer}
.f-check input{width:18px;height:18px;margin:2px 0 0;accent-color:var(--red)}
.f-check small{display:block;color:var(--muted);font-size:13px}
.f-area{display:flex;align-items:center;gap:8px}
.f-area input{width:100%;height:42px;padding:0 12px;border:1.5px solid #cfd4ce;border-radius:8px}
.f-hint{font-size:13px;color:var(--muted);margin:6px 0 0}
.f-reset{background:none;border:0;padding:0;color:var(--red);font-weight:600;cursor:pointer}
.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.toolbar select{height:42px;padding:0 12px;border:1.5px solid #cfd4ce;border-radius:8px;background:#fff}
.count{color:var(--muted);font-size:15px}
.f-open{display:none}
.filters .f-close.x,.f-apply{display:none}
.cat-page .grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.empty{padding:28px;border:1px dashed #cfd4ce;border-radius:var(--r);text-align:center}
.other{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.other a{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border:1px solid var(--line);border-radius:var(--r);text-decoration:none;color:var(--text);background:#fff}
.other a:hover{border-color:var(--ink)}
.other b{color:var(--ink);font-size:16.5px}
.other span{font-size:14px}

/* ---------- Карточка товара ---------- */
.pd{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);gap:44px;align-items:start;padding-bottom:40px}
.pd-gal-main{aspect-ratio:4/3;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;display:block}
.pd-gal-main img{width:100%;height:100%;object-fit:contain}
.pd-thumbs{display:flex;gap:10px;margin-top:10px}
.pd-thumb{width:84px;aspect-ratio:4/3;padding:0;border:1.5px solid var(--line);border-radius:8px;overflow:hidden;background:#fff;cursor:pointer}
.pd-thumb img{width:100%;height:100%;object-fit:contain}
.pd-thumb[aria-pressed="true"]{border-color:var(--ink)}
.pd-code{font-size:14px;color:var(--muted);margin:0 0 6px}
.pd h1{font-size:clamp(26px,3.2vw,36px);margin-bottom:18px}
.pd-key{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:0 0 18px;padding:0;list-style:none}
.pd-key li{background:#fff;padding:12px 14px;display:flex;flex-direction:column}
.pd-key span{font-size:13px;color:var(--muted)}
.pd-key b{font-size:19px;color:var(--ink)}
.pd-buy{border:1px solid var(--line);border-radius:12px;padding:18px}
.pd-price{display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 12px;margin-bottom:14px}
.pd-price b{font-size:32px;color:var(--ink);line-height:1}
.pd-price small{color:var(--muted);font-size:13.5px}
.pd-btns{display:grid;grid-template-columns:1fr auto;gap:10px}
.pd-trust{display:flex;flex-wrap:wrap;gap:6px 18px;margin:14px 0 0;padding:0;list-style:none;font-size:14px}
.pd-trust li::before{content:"✓";color:var(--ok);font-weight:700;margin-right:6px}
.pd-var{margin-top:20px}
.pd-var p{font-size:14.5px;color:var(--muted);margin:0 0 8px}
.pd-var-list{display:flex;flex-wrap:wrap;gap:8px}
.pd-var-list a{display:flex;flex-direction:column;min-width:82px;padding:7px 11px;border:1.5px solid var(--line);border-radius:8px;text-decoration:none;color:var(--ink);background:#fff;line-height:1.25}
.pd-var-list a b{font-size:14.5px}
.pd-var-list a small{font-size:12.5px;color:var(--muted)}
.pd-var-list a:hover{border-color:var(--ink)}
.pd-var-list a[aria-current]{border-color:var(--red);background:#fff5f6}

.tabs{border-bottom:1px solid var(--line);display:flex;gap:4px;overflow-x:auto;scrollbar-width:none}
.tab{flex:0 0 auto;padding:14px 18px;border:0;border-bottom:3px solid transparent;background:none;font-weight:600;font-size:16px;color:var(--muted);cursor:pointer}
.tab[aria-selected="true"]{color:var(--ink);border-bottom-color:var(--red)}
.panel{padding:26px 0 10px;max-width:860px}
.panel[hidden]{display:none}
.spec{width:100%;border-collapse:collapse}
.spec th,.spec td{padding:11px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:15.5px}
.spec th{width:50%;font-weight:400;color:var(--muted);padding-right:16px}
.spec td{color:var(--ink);font-weight:500}
.note{font-size:14px;color:var(--muted);margin-top:12px}
.fit{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:18px 0}
.fit div{padding:16px;border-radius:10px;background:var(--bg)}
.fit h3{font-size:16px;margin-bottom:6px}
.fit p{margin:0;font-size:15px}
.areas{width:100%;border-collapse:collapse;margin:8px 0}
.areas th,.areas td{border:1px solid var(--line);padding:10px 12px;text-align:left;font-size:15px}
.areas thead th{background:var(--bg);color:var(--ink);font-weight:600}
.checks{margin:0;padding-left:20px}
.checks li{margin-bottom:6px}
.docs{display:flex;flex-direction:column;gap:10px;margin:0;padding:0;list-style:none}
.docs a{display:inline-flex;gap:10px;align-items:center;font-weight:500}
.docs a::before{content:"PDF";font-size:11px;font-weight:700;padding:3px 6px;border-radius:4px;background:var(--red);color:#fff}
.also{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}

.mbar{display:none}

/* ---------- Форма заказа ---------- */
.order{width:min(460px,calc(100% - 24px));border:0;border-radius:14px;padding:24px}
.order::backdrop{background:#1f2321a6}
.order-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.order-head h2{font-size:22px;margin:0}
.x{width:40px;height:40px;flex:0 0 auto;border:0;border-radius:50%;background:var(--bg);font-size:24px;line-height:1;cursor:pointer}
.order-prod{margin:10px 0 16px;padding:10px 12px;border-radius:8px;background:var(--bg);font-weight:600;color:var(--ink)}
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px;font-size:14.5px;font-weight:500;color:var(--ink)}
.field input,.field textarea{width:100%;min-height:46px;padding:10px 12px;border:1.5px solid #cfd4ce;border-radius:8px;font-size:16px}
.field textarea{min-height:76px;resize:vertical}
.field input:focus,.field textarea:focus{outline:0;border-color:var(--ink)}
.order small{display:block;font-size:12.5px;color:var(--muted);margin-top:10px}
.order-msg{margin-top:12px;font-weight:500}
.order-msg.ok{color:var(--ok)}
.order-msg.err{color:var(--red-d)}
.hp{position:absolute;left:-9999px}

/* ---------- Подвал ---------- */
.ft{background:var(--ink);color:#c8cdca;padding:44px 0 28px;margin-top:20px}
.ft-in{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:28px}
.ft b{display:block;color:#fff;margin-bottom:10px}
.ft a{display:block;color:#c8cdca;text-decoration:none;padding:3px 0;font-size:15px}
.ft a:hover{color:#fff}
.ft-phone{font-size:20px;color:#fff!important;font-weight:600}
.ft-copy{grid-column:1/-1;border-top:1px solid #ffffff1f;padding-top:16px;font-size:13.5px}

/* ---------- Планшет ---------- */
@media (max-width:1080px){
  .grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .cat-page .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .also{grid-template-columns:repeat(2,minmax(0,1fr))}
  .hd-nav{overflow-x:auto;scrollbar-width:none}
}

/* ---------- Телефон ---------- */
@media (max-width:860px){
  :root{--gut:16px}
  .hd-top{flex-wrap:wrap;height:auto;gap:10px;padding-top:10px;padding-bottom:10px}
  .hd-logo{margin-right:auto}
  .hd-logo img{width:120px}
  .hd-search{order:5;flex:1 1 100%;max-width:none}
  .hd-phone{margin-left:0;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f2321' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 16.9v3a2 2 0 0 1-2.2 2 19.8 19.8 0 0 1-8.6-3.1 19.5 19.5 0 0 1-6-6A19.8 19.8 0 0 1 2.1 4.2 2 2 0 0 1 4.1 2h3a2 2 0 0 1 2 1.7c.1 1 .4 1.9.7 2.8a2 2 0 0 1-.5 2.1L8 9.9a16 16 0 0 0 6 6l1.3-1.3a2 2 0 0 1 2.1-.4c.9.3 1.8.6 2.8.7a2 2 0 0 1 1.7 2z'/%3E%3C/svg%3E") no-repeat center/20px}
  .hd-phone b,.hd-phone small{display:none}
  .hd-burger{display:block;width:44px;height:44px;border:1px solid var(--line);border-radius:10px;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f2321' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M4 7h16M4 12h16M4 17h16'/%3E%3C/svg%3E") no-repeat center/22px;cursor:pointer}
  .hd-burger[aria-expanded="true"]{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231f2321' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 6l12 12M18 6 6 18'/%3E%3C/svg%3E")}
  .hd-order{display:none}
  .hd-nav{display:none;flex-direction:column;align-items:stretch;height:auto;gap:0;padding-bottom:12px}
  .hd-nav.open{display:flex}
  .hd-nav a{padding:13px 4px;border-radius:0;border-bottom:1px solid var(--line);font-size:17px}
  .hd-nav a.hd-cat{background:none;color:var(--ink);padding:13px 4px}
  .sr-box{position:fixed;left:0;right:0;top:auto;border-radius:0;border-left:0;border-right:0;max-height:calc(100dvh - 130px)}

  .sec{padding:38px 0}
  .sec-head{flex-direction:column;align-items:flex-start;gap:6px}
  .hero-in{grid-template-columns:1fr;gap:24px;padding:28px var(--gut)}
  .hero-img{order:-1;aspect-ratio:16/9}
  .hero-sub{font-size:16.5px}
  .hero-btns .btn{flex:1 1 auto}
  .cats,.benefits,.steps,.arts,.other{grid-template-columns:1fr}
  .cat{grid-template-columns:1fr 92px;padding:16px}
  .cat img{width:92px;height:76px}
  .grid,.cat-page .grid,.also{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .pc-body{padding:10px 12px 12px;gap:6px}
  .pc-name{font-size:15px}
  .pc-specs li{font-size:12px;padding:2px 6px}
  .pc-foot{flex-direction:column;align-items:stretch;gap:8px}
  .pc-price{font-size:18px}

  .cat-page{grid-template-columns:1fr;gap:0}
  .f-open{display:inline-flex}
  .filters{display:none;position:fixed;inset:0;z-index:60;border:0;border-radius:0;overflow-y:auto;background:#fff;padding:18px 16px 90px}
  .filters.open{display:block}
  .filters.open .f-close.x,.filters.open .f-apply{display:block}
  .f-apply{position:fixed;left:0;right:0;bottom:0;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line)}

  .pd{grid-template-columns:1fr;gap:18px}
  .pd-gal{margin:0 calc(-1*var(--gut))}
  .pd-gal-main{border-radius:0;border-left:0;border-right:0}
  .pd-thumbs{padding:0 var(--gut)}
  .pd-thumb{width:68px}
  .pd-key b{font-size:17px}
  .pd-btns{grid-template-columns:1fr}
  .fit{grid-template-columns:1fr}
  .tab{padding:12px 14px;font-size:15px}
  .spec th{width:52%}
  .mbar{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:40;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:#fff;border-top:1px solid var(--line);box-shadow:0 -8px 24px #1f23211a;transform:translateY(110%);transition:transform .2s}
  .mbar.show{transform:none}
  .mbar b{font-size:19px;color:var(--ink);white-space:nowrap}
  .mbar small{display:block;font-size:12.5px;color:var(--muted);white-space:nowrap}
  .ft{padding-bottom:90px}
  .ft-in{grid-template-columns:1fr 1fr}
  .ft-in>div:first-child{grid-column:1/-1}
}
@media (max-width:370px){
  .grid,.cat-page .grid,.also{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* ---------- Содержимое старых страниц (статьи, разделы) ---------- */
.pt-main,main{min-width:0}
main table:not(.spec):not(.areas){max-width:100%}
@media (max-width:860px){
  .pt-article-layout{grid-template-columns:minmax(0,1fr)!important}
  .pt-article-toc,.pt-article-body,.pt-hero-copy,.pt-card,.pt-buy-card,.pt-product,.pt-cat-card,.pt-guide-card,.pt-zone-card{min-width:0}
  .pt-article-body{overflow-wrap:anywhere}
  .pt-tech-figure,.pt-node-figure,.diagram-frame,.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
  .guide-nav{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
  .guide-nav a{flex:0 0 auto}
  .cable-compare{grid-template-columns:minmax(0,1fr)!important}
  .compare-table{overflow-x:auto;max-width:100%}
  .pt-cards{grid-template-columns:minmax(0,1fr)!important}
  .pt-card{min-height:0!important}
  main table:not(.spec):not(.areas):not(#cat-table){display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .pt-button,.button{max-width:100%;white-space:normal;text-align:center}
}
/* кнопки старых страниц в стиле новых */
.pt-button,main .button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;background:var(--red);color:#fff!important;font-weight:600;text-decoration:none;border:0}
.pt-button:hover,main .button:hover{background:var(--red-d)}

/* ===================== Типовые блоки для разделов и статей ===================== */
.page-head{background:var(--bg);padding:28px 0 34px}
.page-head h1{max-width:900px}
.page-head .lead,.lead{font-size:18px;line-height:1.55;color:var(--text);max-width:760px}
.page-head .lbl{display:none}
.page-head img{border-radius:12px;margin-top:16px;max-height:420px;width:100%;object-fit:cover}
.lbl{font-size:14px;color:var(--muted);margin:0 0 6px;font-weight:500}

.prose{color:var(--text)}
.prose>*:first-child{margin-top:0}
.prose h2{margin:1.4em 0 .5em}
.prose>h2:first-child,.prose>div:first-child>h2:first-child{margin-top:0}
.prose h3{margin:1.2em 0 .4em}
.prose p,.prose li{max-width:780px}
.prose ul,.prose ol{padding-left:22px;margin:0 0 1em}
.prose li{margin-bottom:6px}
.prose a:not(.btn):not(.card){color:var(--ink);text-decoration-color:#b9c0bb;text-underline-offset:3px}
.prose a:not(.btn):not(.card):hover{color:var(--red);text-decoration-color:currentColor}
.prose img{border-radius:10px}
.prose b,.prose strong{color:var(--ink)}
.prose .btn{margin:6px 10px 6px 0;color:#fff;text-decoration:none}
.prose .link{font-weight:500}
.prose hr{border:0;border-top:1px solid var(--line);margin:24px 0}
.prose blockquote{margin:16px 0;padding:12px 18px;border-left:3px solid var(--red);background:var(--bg);border-radius:0 8px 8px 0}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:18px 0;padding:0;list-style:none}
.prose .cards{max-width:none}
.card{display:block;padding:18px;border:1px solid var(--line);border-radius:var(--r);background:#fff;color:var(--text);text-decoration:none!important;min-width:0}
.sec-grey .card{background:#fff}
.card h2,.card h3{font-size:18px;margin:0 0 6px!important}
.card p{margin:0 0 8px;font-size:15px}
.card p:last-child{margin-bottom:0}
.card img{width:100%;aspect-ratio:4/3;object-fit:contain;margin-bottom:12px;background:#fff}
.card ul{padding-left:18px;font-size:15px}
a.card:hover{border-color:var(--ink)}
a.card h3,a.card h2{color:var(--ink)}
li.card{margin:0}

.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center;margin:8px 0}
.split>img,.split>picture img,.split>figure img{width:100%;border-radius:12px;object-fit:cover}
.gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:16px 0}
.gallery img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px}
.fig{margin:20px 0}
.fig img{border:1px solid var(--line);background:#fff}
.fig figcaption{font-size:14px;color:var(--muted);margin-top:8px}
.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:16px 0;border:1px solid var(--line);border-radius:10px}
.tbl table{width:100%;border-collapse:collapse;min-width:520px}
.tbl th,.tbl td{padding:10px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;font-size:15px}
.tbl thead th{background:var(--bg);color:var(--ink);font-weight:600;white-space:nowrap}
.tbl tr:last-child td{border-bottom:0}
.tbl tbody th{font-weight:500;color:var(--ink)}
.callout{margin:20px 0;padding:16px 18px;border-radius:10px;background:#fff8e8;border:1px solid #f1e2b8}
.callout h2,.callout h3{font-size:17px;margin:0 0 6px!important}
.callout p:last-child{margin-bottom:0}
.summary{margin:24px 0;padding:18px 20px;border-radius:12px;background:var(--bg);border:1px solid var(--line)}
.summary h2{font-size:18px!important;margin:0 0 10px!important}
.summary ul{margin-bottom:8px}
.summary p:last-child{margin:0}
.hint{font-size:15px;color:var(--muted);padding:10px 14px;border-left:3px solid var(--line);margin:16px 0}
.form{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;max-width:760px;margin:18px 0;padding:20px;border:1px solid var(--line);border-radius:12px;background:#fff}
.form label{display:flex;flex-direction:column;gap:5px;font-weight:500;color:var(--ink);font-size:14.5px}
.form input:not([type=checkbox]):not([type=radio]),.form select,.form textarea{width:100%;min-height:46px;padding:10px 12px;border:1.5px solid #cfd4ce;border-radius:8px;background:#fff;font-size:16px}
.form textarea,.form label:has(textarea),.form button,.form p{grid-column:1/-1}
.form button{justify-self:start}
.form button:not(.btn){min-height:48px;padding:0 24px;border:0;border-radius:8px;background:var(--red);color:#fff;font-weight:600;cursor:pointer}

/* статьи */
.art-wrap{padding-bottom:40px}
.art-head{max-width:820px;padding:4px 0 18px}
.art-head h1{font-size:clamp(28px,3.6vw,42px)}
.art-meta{font-size:14px;color:var(--muted);margin:0}
.art-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.art-body{max-width:780px;font-size:17px;line-height:1.65}
.art-cover{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:12px;margin-bottom:24px}
.art-side{position:sticky;top:140px;display:flex;flex-direction:column;gap:16px}
.toc{display:flex;flex-direction:column;gap:2px;padding:16px;border:1px solid var(--line);border-radius:12px}
.toc b{color:var(--ink);margin-bottom:6px}
.toc a{font-size:14.5px;color:var(--text);text-decoration:none;padding:5px 0;line-height:1.35}
.toc a:hover{color:var(--red)}
.toc-m{display:none}
.side-card{padding:18px;border-radius:12px;background:var(--bg)}
.side-card b{display:block;color:var(--ink);font-size:17px;margin-bottom:4px}
.side-card p{font-size:14.5px}
.art-cta{margin-top:36px;padding:24px;border-radius:12px;background:var(--ink);color:#d7dbd8}
.art-cta h2{color:#fff;margin:0 0 8px!important;font-size:22px}
.art-cta-btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}
.art-cta .btn-line{background:transparent;color:#fff;border-color:#fff}
.art-cta-links{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:16px}
.art-cta-links a{color:#fff!important}

.ia{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut) 40px}

@media (max-width:860px){
  .page-head{padding:20px 0 24px}
  .page-head .lead,.lead{font-size:16.5px}
  .split{grid-template-columns:1fr;gap:18px}
  .cards{grid-template-columns:1fr}
  .art-grid{grid-template-columns:minmax(0,1fr);gap:0}
  .art-side{position:static;margin-top:28px}
  .art-side .toc{display:none}
  .art-body{font-size:16.5px}
  .toc-m{display:block;margin:0 0 20px;border:1px solid var(--line);border-radius:10px}
  .toc-m summary{padding:12px 14px;font-weight:600;color:var(--ink);cursor:pointer}
  .toc-m nav{display:flex;flex-direction:column;padding:0 14px 12px}
  .toc-m a{padding:7px 0;color:var(--text);text-decoration:none;border-top:1px solid var(--line);font-size:15px}
  .form{padding:16px}
  .tbl table{min-width:480px}
}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.chips a{padding:7px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;text-decoration:none!important;font-size:14.5px;font-weight:500;color:var(--ink)}
.chips a:hover{border-color:var(--ink)}
.prose dl{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:8px 20px;margin:12px 0}
.prose dt{color:var(--muted)}
.prose dd{margin:0;color:var(--ink);font-weight:500}
@media (max-width:860px){.prose dl{grid-template-columns:1fr;gap:2px}.prose dd{margin-bottom:8px}}
/* совместимые мембраны */
.pd-membr{margin-top:14px;padding:14px 16px;border-radius:10px;background:#eef6f3;border:1px solid #cfe5dc}
.pd-membr b{display:block;color:var(--ink);margin-bottom:4px}
.pd-membr p{margin:0 0 6px;font-size:14.5px}
.membr-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.membr-card{padding:18px;border:1px solid var(--line);border-radius:var(--r);background:#fff;display:flex;flex-direction:column;gap:4px}
.membr-card b{font-size:20px;color:var(--ink)}
.membr-card span{font-size:14px;color:var(--muted)}
@media (max-width:860px){.membr-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}