/* ============================================================
   ПРОМБЕЗОПАСНОСТЬ — инженерные системы зданий
   ============================================================ */

:root{
  --ink:      #131A22;
  --ink-2:    #1E2833;
  --steel:    #64707E;
  --line:     #DCE2E8;
  --line-2:   #EDF1F5;
  --paper:    #F1F5F8;
  --white:    #FFFFFF;
  --signal:   #1D4E79;
  --signal-d: #143A5C;
  --signal-l: #E7EEF5;
  --flame:    #C6421C;
  --amber:    #EE6C2B;

  --wrap: 1280px;
  --gut: 24px;
  --r: 6px;
  --r-lg: 12px;
  --shadow: 0 18px 40px -24px rgba(19,26,34,.45);

  --f-display: "Golos Text", "Segoe UI", Roboto, Arial, sans-serif;
  --f-text: "IBM Plex Sans", "Segoe UI", Roboto, Arial, sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
}

body{margin:0;font-family:var(--f-text);font-size:16px;line-height:1.6;color:var(--ink);background:#fff;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-family:var(--f-display);font-weight:700;letter-spacing:-.02em;line-height:1.15;margin:0}
h1{font-size:clamp(30px,4.2vw,52px)}
h2{font-size:clamp(25px,3vw,38px)}
h3{font-size:clamp(18px,1.5vw,21px);letter-spacing:-.01em}
p{margin:0 0 1em}
a{color:inherit}
img{max-width:100%;display:block}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:2px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--gut)}
.section{padding:86px 0}
.section--tight{padding:56px 0}
.section--paper{background:var(--paper)}
.section--dark{background:var(--ink);color:#DCE4EC}
.section--dark h2,.section--dark h3,.section--dark h4{color:#fff}
.lead{font-size:18px;color:var(--steel);max-width:64ch}
.section--dark .lead{color:#9FB0C0}
.muted{color:var(--steel)}

.shead{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.shead__text{max-width:70ch}
.shead h2{margin-bottom:12px}
.shead p{margin:0;color:var(--steel)}
.section--dark .shead p{color:#9BA9B8}
.shead__mark{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--signal);font-weight:600;margin-bottom:14px}
.shead__mark svg{color:var(--amber);flex:none}
.section--dark .shead__mark{color:var(--amber)}
.section--dark .shead__mark svg{color:var(--amber)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:15px;font-weight:600;
  padding:14px 26px;border:1px solid transparent;border-radius:var(--r);text-decoration:none;cursor:pointer;
  transition:background .18s,color .18s,border-color .18s,transform .12s}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--signal);color:#fff}
.btn--primary:hover{background:var(--signal-d)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--ghost:hover{border-color:var(--signal);color:var(--signal)}
.btn--light{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(255,255,255,.32)}
.btn--light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn--wide{width:100%}
.btn--sm{padding:10px 16px;font-size:13.5px}
.btn--wa{background:#25D366;color:#fff}
.btn--wa:hover{background:#1eb856}
.btn--tg{background:#2AABEE;color:#fff}
.btn--tg:hover{background:#1f97d6}

/* ============ ЗАГЛУШКИ ПОД ИЗОБРАЖЕНИЯ ============ */
.ph{position:relative;overflow:hidden;background:#E9F0F6;border-radius:var(--r);background-size:cover;background-position:center}
.ph::before{content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(29,78,121,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(29,78,121,.07) 1px,transparent 1px);
  background-size:24px 24px}
.ph__lbl{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;
  text-align:center;padding:16px;color:#8CA0B3;font-size:12.5px;line-height:1.45}
.ph__lbl b{font-weight:600;color:#7B90A4;word-break:break-all}
.ph[style*="url"]::before,.ph[style*="url"] .ph__lbl{display:none}
.ph--4x3{aspect-ratio:4/3}
.ph--3x4{aspect-ratio:3/4}
.ph--16x9{aspect-ratio:16/9}
.ph--1x1{aspect-ratio:1/1}
.ph--21x9{aspect-ratio:21/9}

/* ============ ШАПКА ============ */
.topbar{background:var(--ink);color:#98A6B5;font-size:13.5px}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:42px}
.topbar a{color:#C6D1DC;text-decoration:none}
.topbar a:hover{color:#fff}
.topbar__l,.topbar__r{display:flex;align-items:center;gap:22px}
.topbar__item{display:flex;align-items:center;gap:7px;white-space:nowrap}
.topbar svg{flex:none;opacity:.75}
.msg{display:flex;gap:8px}
.msg a{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;color:#fff;transition:transform .15s}
.msg a:hover{transform:scale(1.12)}
.msg .wa{background:#25D366}
.msg .tg{background:#2AABEE}

.header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .2s}
.header.is-stuck{box-shadow:0 8px 24px -14px rgba(19,26,34,.35)}
.header .wrap{display:flex;align-items:center;gap:26px;height:86px;transition:height .2s}
.header.is-stuck .wrap{height:70px}

.logo{display:flex;align-items:center;gap:12px;text-decoration:none;flex:none}
.logo__mark{width:42px;height:42px;flex:none;color:var(--signal)}
.logo__name{display:block;font-family:var(--f-display);font-weight:700;font-size:21px;line-height:1;color:var(--ink)}
.logo__sub{display:block;font-size:11.5px;color:var(--steel);line-height:1.3;margin-top:5px;max-width:200px}

.nav{margin-left:auto}
.nav ul{display:flex;gap:20px}
.nav a{text-decoration:none;font-size:14.5px;font-weight:500;color:var(--ink);padding:6px 0;border-bottom:2px solid transparent;display:block;white-space:nowrap}
.nav a:hover{color:var(--signal)}
.nav a[aria-current="page"]{border-bottom-color:var(--amber)}

.header__cta{display:flex;align-items:center;gap:18px;flex:none}
.header__phone{font-family:var(--f-display);font-weight:700;font-size:18px;text-decoration:none;white-space:nowrap}
.header__phone span{display:block;font-family:var(--f-text);font-size:11.5px;font-weight:400;color:var(--steel)}

.burger{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r);cursor:pointer;padding:0;margin-left:auto}
.burger i{display:block;width:18px;height:2px;background:var(--ink);margin:3.5px auto;transition:transform .2s,opacity .2s}
.burger[aria-expanded="true"] i:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.burger[aria-expanded="true"] i:nth-child(2){opacity:0}
.burger[aria-expanded="true"] i:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

/* ============ ГЕРОЙ-СЛАЙДЕР ============ */
.hero{position:relative;background:var(--ink);color:#fff;overflow:hidden;min-height:620px;display:flex;align-items:center}
.hero__bg{position:absolute;inset:0}
.hero__slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;background-size:cover;background-position:center}
.hero__slide.is-on{opacity:1}
.hero__slide::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(13,19,26,.96) 0%,rgba(13,19,26,.86) 45%,rgba(13,19,26,.42) 100%)}
.hero__grid{position:absolute;inset:0;z-index:1;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(110% 90% at 18% 25%,#000 30%,transparent 100%);
  mask-image:radial-gradient(110% 90% at 18% 25%,#000 30%,transparent 100%)}
.hero .wrap{position:relative;z-index:3;width:100%;padding-top:64px;padding-bottom:74px}
.hero__in{max-width:680px}
.hero__eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:13.5px;font-weight:600;color:var(--amber);
  border:1px solid rgba(238,108,43,.45);border-radius:100px;padding:7px 15px;margin-bottom:24px}
.hero h1{color:#fff}
.hero__sub{font-size:19px;color:#BCC9D6;margin:20px 0 32px;max-width:52ch}
.hero__acts{display:flex;gap:14px;flex-wrap:wrap}
.hero__marks{display:flex;gap:28px;flex-wrap:wrap;margin-top:48px}
.hero__mark{display:flex;align-items:center;gap:10px;font-size:14.5px;color:#D3DDE7}
.hero__mark svg{color:var(--amber);flex:none}

.hero__dots{position:absolute;left:var(--gut);bottom:28px;z-index:4;display:flex;gap:10px}
.hero__dots button{width:42px;height:4px;border:0;padding:0;border-radius:2px;background:rgba(255,255,255,.28);cursor:pointer;transition:background .2s}
.hero__dots button[aria-selected="true"]{background:var(--amber)}
.hero__arrows{position:absolute;right:var(--gut);bottom:24px;z-index:4;display:flex;gap:8px}
.hero__arrows button{width:44px;height:44px;border:1px solid rgba(255,255,255,.3);background:rgba(255,255,255,.06);
  color:#fff;border-radius:var(--r);cursor:pointer;display:grid;place-items:center;transition:.18s}
.hero__arrows button:hover{background:#fff;color:var(--ink)}
.hero .wrap{max-width:calc(var(--wrap))}

/* ============ ПОЛОСА ПРЕИМУЩЕСТВ ============ */
.strip{border-bottom:1px solid var(--line);background:#fff}
.strip ul{display:grid;grid-template-columns:repeat(4,1fr)}
.strip li{display:flex;gap:14px;align-items:flex-start;padding:26px 26px 26px 0;border-right:1px solid var(--line)}
.strip li:last-child{border-right:0}
.strip li:not(:first-child){padding-left:26px}
.strip svg{flex:none;color:var(--signal);margin-top:2px}
.strip b{display:block;font-family:var(--f-display);font-size:15.5px;font-weight:600}
.strip span{font-size:13.5px;color:var(--steel)}

/* ============ СЧЁТЧИКИ ============ */
.counters{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.counter b{display:block;font-family:var(--f-display);font-size:clamp(34px,4vw,50px);line-height:1;color:var(--signal);font-variant-numeric:tabular-nums}
.section--dark .counter b{color:var(--amber)}
.counter span{display:block;font-size:14.5px;color:var(--steel);margin-top:10px}
.section--dark .counter span{color:#9BA9B8}

/* ============ КАРТОЧКИ КАТЕГОРИЙ ============ */
.ccards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.ccard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
  overflow:hidden;text-decoration:none;color:inherit;transition:border-color .2s,box-shadow .2s,transform .2s}
.ccard:hover{border-color:var(--signal);box-shadow:var(--shadow);transform:translateY(-3px)}
.ccard .ph{border-radius:0}
.ccard__b{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}
.ccard h3{margin-bottom:10px;transition:color .18s}
.ccard:hover h3{color:var(--signal)}
.ccard__list{font-size:14px;color:var(--steel);line-height:1.7;margin-bottom:18px}
.ccard__list li{position:relative;padding-left:14px}
.ccard__list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:1px;background:var(--amber)}
.ccard__more{margin-top:auto;font-size:14.5px;font-weight:600;color:var(--signal);display:flex;align-items:center;gap:8px}
.ccard__more svg{transition:transform .2s}
.ccard:hover .ccard__more svg{transform:translateX(4px)}

/* ============ КАРТОЧКА ТОВАРА ============ */
.pcards{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.pcards--3{grid-template-columns:repeat(3,1fr)}
.pcard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;transition:border-color .2s,box-shadow .2s}
.pcard:hover{border-color:var(--signal);box-shadow:var(--shadow)}
.pcard__img{position:relative}
.pcard__img .ph{border-radius:0}
.pcard__tag{position:absolute;top:12px;left:12px;z-index:2;font-size:11.5px;font-weight:600;padding:5px 10px;border-radius:100px}
.pcard__tag--stock{background:#E9F7EE;color:#1C7C42;border:1px solid #C6E9D3}
.pcard__tag--order{background:#FCF2E6;color:#9A5A12;border:1px solid #F2DBBC}
.pcard__b{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.pcard h3{font-size:17px;line-height:1.3;margin-bottom:8px}
.pcard__spec{font-size:13.5px;color:var(--steel);line-height:1.6;margin-bottom:16px}
.pcard__foot{margin-top:auto;display:flex;gap:8px}
.pcard__foot .btn{flex:1}

/* ============ ТАБЫ ============ */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:32px}
.tab{border:1px solid var(--line);background:#fff;border-radius:100px;padding:11px 20px;font-size:14.5px;font-weight:500;
  color:var(--ink);cursor:pointer;transition:.18s;white-space:nowrap}
.tab:hover{border-color:var(--signal);color:var(--signal)}
.tab[aria-selected="true"]{background:var(--signal);border-color:var(--signal);color:#fff}
.section--dark .tab{background:transparent;border-color:rgba(255,255,255,.22);color:#D3DDE7}
.section--dark .tab[aria-selected="true"]{background:var(--amber);border-color:var(--amber);color:var(--ink)}
.tabpane{display:none}
.tabpane.is-on{display:block}

.persona{display:grid;grid-template-columns:.9fr 1.1fr;gap:44px;align-items:center}
.persona h3{font-size:24px;margin-bottom:14px}

/* ============ АККОРДЕОН ============ */
.acc{border-top:1px solid var(--line)}
.section--dark .acc{border-color:rgba(255,255,255,.16)}
.acc__i{border-bottom:1px solid var(--line)}
.section--dark .acc__i{border-color:rgba(255,255,255,.16)}
.acc__h{width:100%;background:none;border:0;padding:22px 44px 22px 0;text-align:left;cursor:pointer;position:relative;
  font-family:var(--f-display);font-weight:600;font-size:18px;color:inherit;letter-spacing:-.01em}
.acc__h::after{content:"";position:absolute;right:6px;top:50%;width:11px;height:11px;margin-top:-8px;
  border-right:2px solid var(--signal);border-bottom:2px solid var(--signal);transform:rotate(45deg);transition:transform .22s}
.section--dark .acc__h::after{border-color:var(--amber)}
.acc__i.is-open .acc__h::after{transform:rotate(-135deg);margin-top:-3px}
.acc__c{max-height:0;overflow:hidden;transition:max-height .3s ease}
.acc__c > div{padding:0 0 24px;color:var(--steel);max-width:80ch}
.section--dark .acc__c > div{color:#9BA9B8}

/* ============ БЛОКИ ПРЕИМУЩЕСТВ ============ */
.adv{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.adv--3{grid-template-columns:repeat(3,1fr)}
.adv--2{grid-template-columns:repeat(2,1fr)}
.advb{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px 24px;transition:border-color .2s,transform .2s}
.advb:hover{border-color:var(--signal);transform:translateY(-3px)}
.advb__ic{width:52px;height:52px;border-radius:var(--r);background:var(--signal-l);color:var(--signal);display:grid;place-items:center;margin-bottom:18px}
.advb h3{margin-bottom:14px}
.advb li{position:relative;padding-left:20px;font-size:14.5px;color:var(--steel);margin-bottom:9px;line-height:1.5}
.advb li::before{content:"";position:absolute;left:0;top:7px;width:8px;height:8px;border-radius:2px;background:var(--amber)}

/* ============ ЧЕКЛИСТ ============ */
.checks li{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15.5px}
.checks li:last-child{border-bottom:0}
.checks svg{flex:none;color:var(--signal);margin-top:4px}
.section--dark .checks li{border-color:rgba(255,255,255,.14)}
.section--dark .checks svg{color:var(--amber)}

/* ============ ШАГИ ============ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;counter-reset:s}
.step{position:relative;padding-top:24px;border-top:1px solid rgba(255,255,255,.2);counter-increment:s}
.step::before{content:counter(s,decimal-leading-zero);font-family:var(--f-display);font-weight:700;font-size:13px;color:var(--amber);
  position:absolute;top:-11px;left:0;background:var(--ink);padding-right:10px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14.5px;color:#9BA9B8;margin:0}

/* ============ СЛАЙДЕР ============ */
.slider{position:relative}
.slider__track{display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;scroll-behavior:smooth;padding-bottom:6px;scrollbar-width:none}
.slider__track::-webkit-scrollbar{display:none}
.slider__it{flex:0 0 calc((100% - 60px)/4);scroll-snap-align:start;cursor:zoom-in;text-decoration:none;color:inherit}
.slider__it .ph{border:1px solid var(--line);transition:border-color .2s}
.slider__it:hover .ph{border-color:var(--signal)}
.slider__it b{display:block;font-size:14.5px;font-weight:600;margin-top:12px}
.slider__it span{font-size:13px;color:var(--steel)}
.slider__nav{display:flex;gap:8px;margin-top:22px}
.slider__nav button{width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r);cursor:pointer;
  display:grid;place-items:center;color:var(--ink);transition:.18s}
.slider__nav button:hover{background:var(--signal);border-color:var(--signal);color:#fff}

/* ============ ОТЗЫВЫ ============ */
.quotes{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.quote{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:30px}
.quote__q{color:var(--amber);margin-bottom:10px}
.quote p{font-size:15.5px;line-height:1.65}
.quote__who{display:flex;gap:14px;align-items:center;border-top:1px solid var(--line);padding-top:18px;margin-top:6px}
.quote__ava{width:46px;height:46px;border-radius:50%;background:var(--signal-l);display:grid;place-items:center;
  font-family:var(--f-display);font-weight:700;color:var(--signal);flex:none;font-size:14px}
.quote__who b{display:block;font-size:15px}
.quote__who span{font-size:13.5px;color:var(--steel)}

/* ============ ДОКУМЕНТЫ ============ */
.docs{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.doc{display:block;text-decoration:none;color:inherit;cursor:zoom-in}
.doc .ph{border:1px solid var(--line);transition:border-color .2s}
.doc:hover .ph{border-color:var(--signal)}
.doc b{display:block;font-size:14.5px;font-weight:600;margin-top:12px}
.doc span{font-size:13px;color:var(--steel)}

/* ============ ФИЛЬТР КАТАЛОГА ============ */
.filterbar{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-bottom:26px}
.search{position:relative;flex:1;min-width:240px;max-width:380px}
.search input{width:100%;padding:13px 15px 13px 44px;border:1px solid var(--line);border-radius:var(--r);font:400 15px/1.4 var(--f-text)}
.search input:focus{outline:none;border-color:var(--signal);box-shadow:0 0 0 3px rgba(29,78,121,.12)}
.search svg{position:absolute;left:15px;top:50%;margin-top:-9px;color:var(--steel)}
.filter-count{font-size:14px;color:var(--steel);margin-left:auto}
.empty{padding:60px 0;text-align:center;color:var(--steel);display:none}
.empty.is-on{display:block}

/* ============ ФОРМЫ ============ */
.form{display:grid;gap:16px}
.field label{display:block;font-size:13.5px;font-weight:500;margin-bottom:6px;color:var(--steel)}
.field input,.field textarea,.field select{width:100%;font:400 15.5px/1.5 var(--f-text);color:var(--ink);
  padding:13px 15px;border:1px solid var(--line);border-radius:var(--r);background:#fff;transition:border-color .15s}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--signal);outline:none;box-shadow:0 0 0 3px rgba(29,78,121,.12)}
.field textarea{min-height:110px;resize:vertical}
.field--row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.form__agree{display:flex;gap:10px;align-items:flex-start;font-size:13px;color:var(--steel);line-height:1.5}
.form__agree input{margin-top:3px;flex:none;width:16px;height:16px;accent-color:var(--signal)}
.form__err{color:var(--flame);font-size:13px;display:none}
.field.is-bad input,.field.is-bad textarea{border-color:var(--flame)}
.field.is-bad .form__err{display:block}
.form__ok{display:none;border:1px solid var(--signal);border-left-width:3px;background:var(--signal-l);padding:18px 20px;border-radius:var(--r);font-size:15px}
.form.is-sent .form__ok{display:block}
.form.is-sent .form__body{display:none}
.formcard{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:32px;box-shadow:var(--shadow)}

.pick{display:flex;gap:10px}
.pick label{flex:1;position:relative;cursor:pointer}
.pick input{position:absolute;opacity:0;pointer-events:none}
.pick span{display:flex;align-items:center;justify-content:center;gap:8px;padding:12px;border:1px solid var(--line);
  border-radius:var(--r);font-size:14.5px;transition:.15s}
.pick input:checked + span{border-color:var(--signal);background:var(--signal-l);color:var(--signal);font-weight:600}
.pick input:focus-visible + span{outline:3px solid var(--amber);outline-offset:2px}

.filebox{display:block;border:1px dashed var(--line);border-radius:var(--r);padding:15px;text-align:center;font-size:14px;color:var(--steel);cursor:pointer;transition:.15s}
.filebox:hover{border-color:var(--signal);color:var(--signal)}
.filebox input{display:none}

/* ============ КОНТАКТЫ ============ */
.contacts{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.contact b{display:block;font-family:var(--f-display);font-size:14px;color:var(--steel);font-weight:600;margin-bottom:8px}
.contact a{text-decoration:none}
.contact a:hover{color:var(--signal)}
.contact__big{font-family:var(--f-display);font-size:21px;font-weight:700;line-height:1.45}
.map{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.map iframe{width:100%;height:100%;border:0;display:block;aspect-ratio:21/9}

/* ============ CTA ============ */
.cta{background:var(--signal);color:#fff}
.cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-top:54px;padding-bottom:54px;flex-wrap:wrap}
.cta h2{color:#fff;max-width:20ch}
.cta p{color:#C9DDF0;margin:10px 0 0;max-width:50ch}

/* ============ ПОДВАЛ ============ */
.footer{background:var(--ink);color:#93A3B3;font-size:14.5px;padding:58px 0 28px}
.footer a{color:#C6D1DC;text-decoration:none}
.footer a:hover{color:#fff}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px}
.footer h4{color:#fff;font-size:14px;font-family:var(--f-display);margin-bottom:16px}
.footer li{margin-bottom:9px}
.footer .logo__name{color:#fff}
.footer .logo__sub{color:#8593A3}
.footer__bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:22px;display:flex;
  justify-content:space-between;gap:20px;font-size:13px;color:#778696;flex-wrap:wrap}

/* ============ КРОШКИ И ЗАГОЛОВОК СТРАНИЦЫ ============ */
.crumbs{font-size:13.5px;color:var(--steel);padding:18px 0}
.crumbs a{text-decoration:none}
.crumbs a:hover{color:var(--signal)}
.crumbs span{margin:0 8px;opacity:.5}
.phead{background:var(--paper);border-bottom:1px solid var(--line);padding:10px 0 54px}
.phead h1{max-width:22ch;margin-bottom:14px}
.phead p{color:var(--steel);font-size:17px;max-width:66ch;margin:0}

/* ============ МОДАЛЬНОЕ ОКНО ============ */
.modal{position:fixed;inset:0;z-index:100;display:none;align-items:center;justify-content:center;padding:20px}
.modal.is-open{display:flex}
.modal__bg{position:absolute;inset:0;background:rgba(12,18,24,.72)}
.modal__box{position:relative;background:#fff;border-radius:var(--r-lg);max-width:500px;width:100%;padding:34px;max-height:90vh;overflow:auto}
.modal__close{position:absolute;top:14px;right:14px;width:36px;height:36px;border:0;background:var(--paper);border-radius:var(--r);
  cursor:pointer;font-size:18px;line-height:1;color:var(--steel);z-index:2}
.modal__close:hover{background:var(--line)}
.lightbox .modal__box{max-width:720px;padding:16px}
.lightbox .ph{aspect-ratio:3/4;max-height:76vh}

/* ============ НАВЕРХ ============ */
.totop{position:fixed;right:22px;bottom:22px;z-index:50;width:48px;height:48px;border-radius:var(--r);border:0;
  background:var(--signal);color:#fff;cursor:pointer;display:grid;place-items:center;opacity:0;pointer-events:none;
  transform:translateY(10px);transition:opacity .2s,transform .2s;box-shadow:var(--shadow)}
.totop.is-on{opacity:1;pointer-events:auto;transform:none}
.totop:hover{background:var(--signal-d)}

/* ============ ПОЯВЛЕНИЕ ПРИ ПРОКРУТКЕ ============ */
.js .rv{opacity:0;transform:translateY(16px)}
.js .rv.is-in{opacity:1;transform:none;transition:opacity .5s ease,transform .5s ease}
@media (prefers-reduced-motion: reduce){.js .rv{opacity:1;transform:none}}

/* ============ АДАПТИВ ============ */
@media (max-width:1400px){.logo__sub{display:none}}
@media (max-width:1180px){
  .nav ul{gap:15px}
  .nav a{font-size:13.5px}
  .header__phone{font-size:16px}
  .pcards{grid-template-columns:repeat(3,1fr)}
  .slider__it{flex-basis:calc((100% - 40px)/3)}
}
@media (max-width:980px){
  .header .wrap{height:72px;gap:16px}
  .header.is-stuck .wrap{height:64px}
  .nav{position:fixed;top:72px;left:0;right:0;bottom:0;background:#fff;padding:24px var(--gut);overflow:auto;display:none;border-top:1px solid var(--line)}
  .nav.is-open{display:block}
  .nav ul{flex-direction:column;gap:0}
  .nav a{padding:15px 0;border-bottom:1px solid var(--line);font-size:17px}
  .nav a[aria-current="page"]{border-bottom-color:var(--line);color:var(--signal)}
  .burger{display:block}
  .header__cta{display:none}
  .topbar__l .topbar__item:not(:first-child){display:none}
  .strip ul{grid-template-columns:1fr 1fr}
  .strip li{border-bottom:1px solid var(--line);padding-left:0 !important;padding-right:20px}
  .strip li:nth-child(2n){border-right:0}
  .ccards,.adv,.counters{grid-template-columns:1fr 1fr}
  .pcards,.pcards--3{grid-template-columns:repeat(2,1fr)}
  .steps,.contacts,.docs{grid-template-columns:1fr 1fr}
  .persona{grid-template-columns:1fr;gap:28px}
  .footer__grid{grid-template-columns:1fr 1fr}
  .slider__it{flex-basis:calc((100% - 20px)/2)}
  .hero{min-height:540px}
}
@media (max-width:640px){
  :root{--gut:18px}
  .section{padding:54px 0}
  .topbar .wrap{height:auto;padding-top:8px;padding-bottom:8px;flex-wrap:wrap;justify-content:flex-start;gap:6px 16px}
  .topbar__l,.topbar__r{gap:14px}
  .topbar__r .topbar__item{display:none}
  .topbar__item{font-size:12.5px}
  .hero{min-height:0}
  .hero .wrap{padding-top:48px;padding-bottom:92px}
  .hero__arrows{display:none}
  .strip ul{grid-template-columns:1fr}
  .strip li{border-right:0}
  .ccards,.adv,.counters,.quotes,.contacts,.docs,.field--row,.pcards,.pcards--3,.steps{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .slider__it{flex-basis:80%}
  .formcard{padding:22px}
  .modal__box{padding:24px}
}

/* ============================================================
   НОВЫЕ БЛОКИ: карточка изделия, схема, опросный лист
   ============================================================ */

/* ---------- Карточка изделия ---------- */
.prod{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.gal__main{position:relative;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;cursor:zoom-in}
.gal__main .ph{border-radius:0}
.gal__thumbs{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-top:12px}
.gal__t{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;cursor:pointer;background:none;padding:0;transition:border-color .18s}
.gal__t .ph{border-radius:0}
.gal__t .ph__lbl{font-size:9.5px;gap:2px;padding:4px}
.gal__t .ph__lbl svg{display:none}
.gal__t[aria-selected="true"]{border-color:var(--amber);box-shadow:0 0 0 1px var(--amber)}

.prod__art{font-size:13px;color:var(--steel);letter-spacing:.04em;margin-bottom:10px}
.prod__lead{font-size:17px;color:var(--steel);margin:16px 0 22px}
.prod__facts{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;margin-bottom:24px}
.prod__fact{background:#fff;padding:16px 18px}
.prod__fact b{display:block;font-family:var(--f-display);font-size:19px;line-height:1.2}
.prod__fact span{font-size:13px;color:var(--steel)}
.prod__acts{display:flex;gap:12px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;padding:6px 12px;border-radius:100px;
  background:#E9F7EE;color:#1C7C42;border:1px solid #C6E9D3}
.badge--amber{background:#FDF0E8;color:#9E4517;border-color:#F6D6C4}

/* ---------- Спецификация / характеристики ---------- */
.spec{width:100%;border-collapse:collapse;font-size:15px}
.spec th{text-align:left;font-family:var(--f-display);font-size:14px;font-weight:600;color:var(--steel);padding:0 16px 12px 0;border-bottom:1px solid var(--line)}
.spec td{padding:13px 16px 13px 0;border-bottom:1px solid var(--line);vertical-align:top}
.spec td:first-child{width:42%;color:var(--steel)}
.spec td:last-child{font-weight:500}
.spec tr:hover td{background:#FAFCFE}

/* ---------- Нормативная база ---------- */
.norms{display:grid;grid-template-columns:repeat(2,1fr);gap:0 28px}
.norms li{position:relative;padding:11px 0 11px 26px;border-bottom:1px solid var(--line);font-size:14.5px}
.norms li::before{content:"";position:absolute;left:0;top:17px;width:10px;height:2px;background:var(--amber)}

/* ---------- Интерактивная схема БТП ---------- */
.schema{background:var(--ink);border-radius:var(--r-lg);padding:28px;color:#DCE4EC}
.schema__top{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:22px}
.schema__sw{display:inline-flex;align-items:center;gap:9px;border:1px solid rgba(255,255,255,.22);border-radius:100px;
  padding:9px 16px;font-size:14px;cursor:pointer;color:#C3CFDB;transition:.18s;user-select:none}
.schema__sw input{position:absolute;opacity:0;pointer-events:none}
.schema__sw i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.28);transition:.18s}
.schema__sw:hover{border-color:rgba(255,255,255,.45);color:#fff}
.schema__sw.is-on{background:rgba(255,255,255,.08);border-color:var(--amber);color:#fff}
.schema__sw.is-on i{background:var(--amber);box-shadow:0 0 10px var(--amber)}
.schema__svg{width:100%;height:auto;display:block}
.schema__grp{opacity:.14;transition:opacity .3s}
.schema__grp.is-on{opacity:1}
.schema__note{font-size:13.5px;color:#8FA0B1;margin-top:18px}

/* ---------- Проекты ---------- */
.projects{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.project{border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;background:#fff;transition:border-color .2s,transform .2s}
.project:hover{border-color:var(--signal);transform:translateY(-3px)}
.project .ph{border-radius:0}
.project__b{padding:20px}
.project__b b{display:block;font-family:var(--f-display);font-size:17px;margin-bottom:6px}
.project__b span{font-size:13.5px;color:var(--steel)}
.project__tag{display:inline-block;font-size:12px;font-weight:600;color:var(--signal);background:var(--signal-l);
  padding:4px 10px;border-radius:100px;margin-bottom:10px}

/* ---------- Опросный лист ---------- */
.wiz{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.wiz__bar{display:flex;gap:2px;background:var(--line)}
.wiz__bar button{flex:1;background:#fff;border:0;padding:16px 10px 14px;cursor:pointer;text-align:left;
  border-bottom:3px solid transparent;transition:.18s;min-width:0}
.wiz__bar button:hover{background:var(--paper)}
.wiz__bar button[aria-selected="true"]{border-bottom-color:var(--amber)}
.wiz__bar b{display:block;font-family:var(--f-display);font-size:11.5px;color:var(--steel);font-weight:600;letter-spacing:.03em}
.wiz__bar span{display:block;font-size:13.5px;font-weight:500;margin-top:3px;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.wiz__bar button[aria-selected="true"] span{color:var(--signal)}
.wiz__body{padding:32px}
.wiz__step{display:none}
.wiz__step.is-on{display:block}
.wiz__step > h3{margin-bottom:6px}
.wiz__step > p{color:var(--steel);font-size:14.5px;margin-bottom:24px}
.wiz__foot{display:flex;justify-content:space-between;gap:14px;border-top:1px solid var(--line);padding:20px 32px;background:var(--paper);flex-wrap:wrap}
.wiz__prog{height:3px;background:var(--line)}
.wiz__prog i{display:block;height:3px;background:var(--amber);width:0;transition:width .3s}

.fs{border:0;padding:0;margin:0 0 26px}
.fs > legend{font-family:var(--f-display);font-weight:600;font-size:15px;color:var(--ink);padding:0 0 12px;
  border-bottom:1px solid var(--line);width:100%;margin-bottom:16px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.unit{position:relative}
.unit input{padding-right:62px}
.unit em{position:absolute;right:14px;top:34px;font-style:normal;font-size:13px;color:var(--steel);pointer-events:none}

.opts{display:flex;gap:10px;flex-wrap:wrap}
.opts label{position:relative;cursor:pointer}
.opts input{position:absolute;opacity:0;pointer-events:none}
.opts span{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border:1px solid var(--line);
  border-radius:100px;font-size:14px;transition:.15s;background:#fff}
.opts input:checked + span{border-color:var(--signal);background:var(--signal-l);color:var(--signal);font-weight:600}
.opts input:focus-visible + span{outline:3px solid var(--amber);outline-offset:2px}
.opts--box span{border-radius:var(--r)}

.sum{border:1px solid var(--line);border-radius:var(--r);background:var(--paper);padding:20px;max-height:340px;overflow:auto;
  font-size:14px;line-height:1.7}
.sum dl{margin:0;display:grid;grid-template-columns:1fr 1fr;gap:4px 18px}
.sum dt{color:var(--steel)}
.sum dd{margin:0;font-weight:500}
.sum h4{margin:14px 0 6px;font-size:13px;color:var(--signal);font-family:var(--f-display)}
.sum h4:first-child{margin-top:0}

@media print{
  .topbar,.header,.footer,.wiz__bar,.wiz__foot,.totop,.modal,.crumbs,.phead .btn,.section--dark{display:none !important}
  body{font-size:12pt}
  .wiz{border:0}
  .wiz__step{display:block !important;page-break-inside:avoid}
  .wiz__body{padding:0}
}

@media (max-width:980px){
  .prod{grid-template-columns:1fr;gap:32px}
  .projects{grid-template-columns:1fr 1fr}
  .norms{grid-template-columns:1fr}
  .wiz__bar{overflow-x:auto}
  .wiz__bar button{min-width:150px}
}
@media (max-width:640px){
  .prod__facts,.grid2,.grid3,.projects{grid-template-columns:1fr}
  .gal__thumbs{grid-template-columns:repeat(3,1fr)}
  .wiz__body{padding:22px}
  .wiz__foot{padding:18px 22px}
  .sum dl{grid-template-columns:1fr}
  .schema{padding:18px}
}

/* ---------- Карточка контактного лица ---------- */
.vcard{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-lg);padding:22px}
.vcard__ava{width:52px;height:52px;border-radius:50%;background:var(--signal-l);color:var(--signal);
  display:grid;place-items:center;font-family:var(--f-display);font-weight:700;flex:none}
.vcard b{display:block;font-family:var(--f-display);font-size:17px;line-height:1.3}
.vcard > div > span{display:block;font-size:13.5px;color:var(--steel);margin-top:3px}
.vcard p{margin:12px 0 0;font-size:15px;line-height:1.7}
.vcard a{text-decoration:none;color:var(--signal)}
.vcard a:hover{text-decoration:underline}

/* ---------- Фотогалерея с ручным перелистыванием ---------- */
.pslide{position:relative}
.pslide__it{display:none}
.pslide__it.is-on{display:block}
.pslide__nav{display:flex;align-items:center;gap:12px;margin-top:14px}
.pslide__nav button{width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:var(--r);
  cursor:pointer;display:grid;place-items:center;color:var(--ink);transition:.18s}
.pslide__nav button:hover{background:var(--signal);border-color:var(--signal);color:#fff}
.pslide__nav span{font-size:14px;color:var(--steel);font-variant-numeric:tabular-nums}

/* ---------- Ссылка на мессенджер MAX в верхней панели ---------- */
.topbar__max{display:inline-flex;align-items:center;gap:7px;padding:4px 12px;border-radius:100px;
  border:1px solid rgba(255,255,255,.28);font-size:13px;font-weight:600;color:#fff !important;
  text-decoration:none;transition:.18s;white-space:nowrap}
.topbar__max:hover{background:#fff;color:var(--ink) !important;border-color:#fff}

/* ---------- Карта ---------- */
.map--tall iframe{aspect-ratio:4/3}

/* ---------- Два проекта в ряд ---------- */
.projects--2{grid-template-columns:repeat(2,1fr);max-width:860px}
@media (max-width:640px){.projects--2{grid-template-columns:1fr}}