/* Стиль по мотивам neurosoft.com: тёмно-синий текст, голубой акцент, тёмный промо-экран,
   светло-серые карточки с радиусом 20px, крупные фото, Open Sans, много воздуха */
:root{
  --ink:#364a60;        /* основной текст и заголовки */
  --ink-soft:#5e6978;   /* второстепенный текст */
  --muted:#8d94a3;      /* подписи, даты */
  --slate:#3f5265;      /* промо-экран */
  --deep:#293645;       /* тёмные полосы */
  --night:#081b2e;      /* подвал */
  --soft:#f5f5f8;       /* подложки карточек */
  --line:#d8dade;
  --accent:#49aef8;
  --accent-strong:#149bfc;
  --on-dark:#ffffff;
  --on-dark-soft:#b8c5d4;
  --bg:#ffffff;
  --royal:#3a62d6;      /* королевский синий, промо-экран слева */
  --royal-mid:#3f68dc;
  --royal-light:#7da2f5;/* светлый край градиента за слайдером */
  --font:"Open Sans",Arial,sans-serif;
  --r-lg:20px;--r-sm:4px;--wrap:1240px;
  --space:clamp(64px,9vw,120px);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.7 var(--font)}
a{color:var(--accent-strong);text-decoration:none;transition:color .2s}
a:hover{color:var(--ink)}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:var(--r-sm)}
img{max-width:100%;height:auto;display:block}
h1,h2,h3{color:inherit;margin:0;text-wrap:balance;font-weight:700}
h2{font-size:clamp(28px,3.4vw,42px);line-height:1.25}
h3{font-size:clamp(20px,1.8vw,26px);line-height:1.3}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(20px,env(safe-area-inset-left,0px));padding-right:max(20px,env(safe-area-inset-right,0px))}
.section{padding-block:var(--space)}
.section--soft{background:var(--soft)}
.section__head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:clamp(36px,4vw,56px)}
.section__head p{max-width:560px;color:var(--ink-soft);margin-top:16px;font-size:18px}

/* кнопки */
.btn{display:inline-flex;align-items:center;gap:14px;padding:18px 34px;border-radius:var(--r-sm);font-weight:600;font-size:16px;line-height:1.2;border:2px solid var(--accent);background:var(--accent);color:var(--on-dark);transition:background .2s,border-color .2s,color .2s}
.btn:hover{background:var(--accent-strong);border-color:var(--accent-strong);color:var(--on-dark)}
.btn--line{background:transparent;color:var(--ink);border-color:var(--line)}
.btn--line:hover{background:transparent;border-color:var(--accent);color:var(--accent-strong)}
.btn--on-dark{background:transparent;color:var(--on-dark);border-color:rgba(255,255,255,.4)}
.btn--on-dark:hover{background:transparent;border-color:var(--on-dark);color:var(--on-dark)}
.arrow{flex:none;display:inline-flex;align-items:center;justify-content:center;width:60px;height:60px;border-radius:50%;border:2px solid var(--line);color:var(--ink);transition:border-color .2s,color .2s}
.arrow svg{width:24px;height:20px}
a:hover .arrow,.arrow:hover{border-color:var(--accent-strong);color:var(--accent-strong)}

/* шапка */
.header{background:var(--bg);position:sticky;top:env(safe-area-inset-top,0px);z-index:20;border-bottom:1px solid var(--soft)}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:21;background:var(--bg)}
.header__in{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:88px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:14px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand__mark{width:40px;height:40px;flex:none}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__name{font-weight:700;font-size:19px}
.brand__sub{font-size:13px;color:var(--muted)}
.nav{display:flex;gap:40px}
.nav__link{color:var(--ink);font-weight:600;font-size:16px;padding-block:6px;border-bottom:2px solid transparent}
.nav__link:hover{color:var(--accent-strong)}
.nav__link.is-active{border-bottom-color:var(--accent)}
.nav-toggle{display:none;border:2px solid var(--line);background:var(--bg);color:var(--ink);border-radius:var(--r-sm);padding:10px 16px;font:600 15px var(--font);cursor:pointer}
@media (max-width:820px){
  .header__in{min-height:72px}
  .nav-toggle{display:block}
  .nav{display:none;width:100%;flex-direction:column;gap:4px;padding-bottom:20px}
  .nav.is-open{display:flex}
  .nav__link{padding-block:10px;border-bottom:1px solid var(--soft)}
  .nav__link.is-active{border-bottom-color:var(--soft);color:var(--accent-strong)}
}

/* промо-экран */
.promo{background:var(--slate);color:var(--on-dark);padding-block:clamp(56px,7vw,96px);overflow:hidden}
.promo__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(40px,5vw,80px);align-items:center}
.promo h1{font-size:clamp(34px,4.4vw,56px);line-height:1.3}
.promo__lead{font-size:clamp(18px,1.6vw,22px);line-height:1.6;color:var(--on-dark-soft);margin-top:28px;max-width:34ch}
.promo__actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:44px}
.promo__note{margin-top:36px;font-size:15px;color:var(--on-dark-soft);max-width:34ch}
.slide{background:var(--soft);border-radius:var(--r-lg);overflow:hidden;color:var(--ink)}
.slide__img{aspect-ratio:16/10;max-width:100%}
.slide__img img{width:100%;height:100%;object-fit:cover}
.slide__body{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:28px 36px}
.slide__title{font-weight:700;font-size:18px;text-transform:uppercase;letter-spacing:.02em;line-height:1.4}
.slide__text{font-size:15px;color:var(--ink-soft);margin-top:6px}
@media (max-width:900px){.promo__grid{grid-template-columns:1fr}.slide__body{padding:22px 24px}}



/* критерии: компактные карточки с иконками */
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.card{background:var(--soft);border-radius:var(--r-lg);padding:28px;display:flex;flex-direction:column;gap:12px}
.card__icon{width:52px;height:52px;border-radius:14px;background:var(--bg);color:var(--accent-strong);display:inline-flex;align-items:center;justify-content:center;margin-bottom:6px}
.card__icon svg{width:28px;height:28px}
.card h3{font-size:18px;line-height:1.35}
.card p{color:var(--ink-soft);font-size:15px;line-height:1.6}
.section--compact{padding-block:clamp(56px,6vw,88px)}
@media (max-width:1000px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:540px){.cards{grid-template-columns:1fr;gap:12px}.card{padding:22px;flex-direction:row;align-items:flex-start;gap:16px}.card__icon{flex:none;margin:0;width:44px;height:44px}.card__icon svg{width:24px;height:24px}}

/* широкая карточка публикации */
.feature{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);background:var(--bg);border-radius:var(--r-lg);overflow:hidden;color:var(--ink)}
.feature:hover{color:var(--ink)}
.feature__img{min-height:360px;max-width:100%}
.feature__img img{width:100%;height:100%;object-fit:cover}
.feature__body{padding:clamp(32px,4vw,56px);display:flex;flex-direction:column;gap:20px;justify-content:center}
.feature__meta{font-size:14px;color:var(--muted)}
.feature__body p{color:var(--ink-soft)}
.feature__foot{display:flex;align-items:center;gap:16px;font-weight:600;margin-top:12px}
@media (max-width:860px){.feature{grid-template-columns:1fr}.feature__img{min-height:0;aspect-ratio:16/9}}
.section__foot{margin-top:48px}

/* вопросы */
.faq__grid{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:clamp(40px,6vw,96px);align-items:start}
.faq__grid .section__head{display:block;margin:0}
.faq{display:flex;flex-direction:column;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;font-weight:600;font-size:19px;padding-block:28px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:24px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";flex:none;display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;border:2px solid var(--line);font-size:22px;font-weight:400;color:var(--ink);transition:transform .2s,border-color .2s}
.faq details[open] summary::after{transform:rotate(45deg);border-color:var(--accent)}
.faq details p{color:var(--ink-soft);padding-bottom:32px;max-width:62ch}
@media (max-width:860px){.faq__grid{grid-template-columns:1fr}}

/* о компании */
.company{background:var(--deep);color:var(--on-dark)}
.company__grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(40px,6vw,96px);align-items:center}
.company__img{border-radius:var(--r-lg);overflow:hidden;aspect-ratio:4/3;max-width:100%}
.company__img img{width:100%;height:100%;object-fit:cover}
.company__text{display:flex;flex-direction:column;gap:22px}
.company__text p{color:var(--on-dark-soft)}
.company__links{display:flex;gap:16px;flex-wrap:wrap;margin-top:16px}
.company .btn--line{color:var(--on-dark);border-color:rgba(255,255,255,.4)}
.company .btn--line:hover{border-color:var(--on-dark);color:var(--on-dark)}
@media (max-width:860px){.company__grid{grid-template-columns:1fr}}

/* шапка внутренних страниц */
.pagehead{background:var(--slate);color:var(--on-dark);padding-block:clamp(48px,6vw,80px)}
.pagehead h1{font-size:clamp(30px,4vw,50px);line-height:1.25;max-width:22ch}
.pagehead__lead{color:var(--on-dark-soft);font-size:clamp(17px,1.5vw,20px);margin-top:24px;max-width:60ch}
.breadcrumbs{font-size:14px;color:var(--on-dark-soft);margin-bottom:28px;display:flex;gap:10px;flex-wrap:wrap}
.breadcrumbs a{color:var(--on-dark-soft)}
.breadcrumbs a:hover{color:var(--on-dark)}
.pagehead__meta{margin-top:28px;font-size:14px;color:var(--on-dark-soft)}
.banner{border-radius:var(--r-lg);overflow:hidden;position:relative;max-width:100%;aspect-ratio:21/8}
.banner img{width:100%;height:100%;object-fit:cover}
@media (max-width:640px){.banner{aspect-ratio:4/3}}

/* текст статьи */
.page{padding-block:var(--space)}
.prose{max-width:780px;font-size:18px;line-height:1.8}
.prose > * + *{margin-top:24px}
.prose h2{font-size:clamp(26px,2.8vw,34px);margin-top:72px}
.prose h3{margin-top:48px}
.prose ul,.prose ol{padding-left:24px}
.prose li + li{margin-top:12px}
.prose li::marker{color:var(--accent-strong)}
.prose .lead{font-size:20px;color:var(--ink-soft)}
.prose .muted,.muted{color:var(--muted);font-size:15px;line-height:1.7}
.callout{background:var(--soft);border-radius:var(--r-lg);padding:32px 36px}
.table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r-lg);border:1px solid var(--line)}
.prose table{border-collapse:collapse;width:100%;font-size:15px;line-height:1.5;min-width:640px}
.prose th,.prose td{padding:18px 20px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.prose tr:last-child td{border-bottom:0}
.prose th{background:var(--soft);font-weight:600;font-size:13px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft)}
.prose td:first-child{font-weight:600;white-space:nowrap}
.figure{margin:48px 0 0;border-radius:var(--r-lg);overflow:hidden;max-width:100%;aspect-ratio:8/3}
.figure img{width:100%;height:100%;object-fit:cover}
@media (max-width:640px){.figure{aspect-ratio:16/9}}

/* карточка модели в рейтинге */
.model{display:grid;grid-template-columns:220px minmax(0,1fr);gap:36px;align-items:start;background:var(--soft);border-radius:var(--r-lg);padding:36px;margin-top:32px}
.model__img{background:var(--bg);border-radius:var(--r-lg);padding:20px;display:flex;justify-content:center;align-items:center;aspect-ratio:3/4;max-width:100%}
.model__img img{max-height:100%;width:auto;object-fit:contain}
.model__rank{font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-strong)}
.model h3{margin-top:6px}
.model p{margin-top:16px;color:var(--ink-soft);font-size:17px}
.model dl{margin:24px 0 0;display:grid;grid-template-columns:auto 1fr;gap:10px 24px;font-size:15px;line-height:1.5;padding-top:20px;border-top:1px solid var(--line)}
.model dt{color:var(--muted)}
.model dd{margin:0}
@media (max-width:640px){.model{grid-template-columns:1fr;padding:24px}.model__img{aspect-ratio:auto;height:240px}}

/* список статей */
.posts{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,360px),1fr));gap:40px}
.post{background:var(--soft);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;color:var(--ink)}
.post:hover{color:var(--ink)}
.post__img{aspect-ratio:16/9;max-width:100%}
.post__img img{width:100%;height:100%;object-fit:cover}
.post__body{padding:32px;display:flex;flex-direction:column;gap:14px;flex:1}
.post__body p{color:var(--ink-soft);font-size:16px;flex:1}
.post__meta{font-size:14px;color:var(--muted)}

/* реквизиты */
.facts-list{display:grid;grid-template-columns:auto 1fr;gap:16px 40px;margin:0;background:var(--soft);border-radius:var(--r-lg);padding:36px}
.facts-list dt{color:var(--muted)}
.facts-list dd{margin:0;font-weight:600;overflow-wrap:anywhere}
@media (max-width:560px){.facts-list{grid-template-columns:1fr;gap:4px}.facts-list dd{margin-bottom:14px}}

/* подвал */
.footer{background:var(--night);color:var(--on-dark-soft);font-size:15px}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-block:80px 56px}
.footer__brand{font-weight:700;font-size:19px;color:var(--on-dark);margin-bottom:12px}
.footer__title{font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--on-dark);margin-bottom:16px}
.footer__links,.footer__contacts{display:flex;flex-direction:column;gap:12px}
.footer a{color:var(--on-dark-soft)}
.footer a:hover{color:var(--on-dark)}
.footer__strong{color:var(--on-dark);font-weight:600;font-size:18px}
.footer__bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:28px;border-top:1px solid rgba(255,255,255,.12);font-size:13.5px;color:var(--muted)}
@media (max-width:820px){.footer__grid{grid-template-columns:1fr;gap:36px;padding-block:56px 40px}}
.prose > :first-child{margin-top:0}
.feature__img img{object-position:78% center}
.card__img--contain{background:var(--bg)}
.card__img--contain img{object-fit:contain;padding:12px}

/* слайдер «Топ рециркуляторов»: стрелки-квадраты как у neurosoft, карточка модели */
.slider{min-width:0}
.slider__head{display:flex;align-items:center;gap:20px;margin-bottom:20px}
.slider__nav{display:flex;gap:12px;flex:none}
.slider__btn{width:65px;height:65px;border-radius:var(--r-lg);border:0;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;background:var(--soft);color:var(--ink);transition:background .2s,color .2s}
.slider__btn--next{background:var(--deep);color:var(--on-dark)}
.slider__btn:hover{background:var(--accent);color:var(--on-dark)}
.slider__btn svg{width:24px;height:20px}
.slider__btn--prev svg{transform:scaleX(-1)}
.slider__label{display:flex;flex-direction:column;gap:2px;font-weight:700;font-size:15px;text-transform:uppercase;letter-spacing:.06em}
.slider__count{font-weight:400;letter-spacing:0;text-transform:none;color:var(--on-dark-soft);font-variant-numeric:tabular-nums}
.slider__track{display:grid}
.slider__track > .top{grid-area:1/1;opacity:0;visibility:hidden;transition:opacity .45s,visibility .45s}
.slider__track > .top.is-active{opacity:1;visibility:visible}
.slider__dots{display:flex;gap:8px;margin-top:22px;flex-wrap:wrap}
.slider__dot{width:28px;height:4px;border-radius:2px;border:0;padding:0;background:rgba(255,255,255,.3);cursor:pointer}
.slider__dot.is-active{background:var(--accent)}
.top{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1fr);background:var(--bg);border-radius:var(--r-lg);overflow:hidden;color:var(--ink)}
.top:hover{color:var(--ink)}
.top__img{aspect-ratio:3/4;max-width:100%;background:var(--soft)}
.top__img img{width:100%;height:100%;object-fit:cover}
.top__body{padding:clamp(24px,3vw,40px);display:flex;flex-direction:column;gap:10px;justify-content:center}
.top__rank{font-size:13px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--accent-strong)}
.top__name{font-size:clamp(22px,2.2vw,30px);font-weight:700;line-height:1.25}
.top__specs{list-style:none;margin:10px 0 0;padding:0;display:flex;flex-direction:column;gap:8px;font-size:15px;color:var(--ink-soft);line-height:1.45}
.top__specs li{padding-left:18px;position:relative}
.top__specs li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:2px;background:var(--accent)}
.top__more{display:flex;align-items:center;gap:14px;font-weight:600;font-size:15px;margin-top:18px}
.top__more .arrow{width:48px;height:48px}
@media (max-width:480px){.top__body{padding:18px}.top__specs{font-size:14px}.top__more{font-size:0;gap:0}.slider__btn{width:54px;height:54px;border-radius:16px}}
@media (max-width:480px){
  .brand{gap:10px}
  .brand__mark{width:34px;height:34px}
  .brand__name{font-size:16px}
  .brand__sub{font-size:12px}
  .nav-toggle{padding:8px 12px;font-size:14px}
  .header__in{gap:12px}
}

/* картинки в родных пропорциях: без обрезки */
.feature{grid-template-columns:1fr}
.feature__img{min-height:0;aspect-ratio:auto}
.feature__img img{height:auto;object-fit:initial}
.feature__body{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px 48px;align-items:end}
.feature__body > *{grid-column:1}
.feature__body .feature__foot{grid-column:2;grid-row:1 / span 3;margin:0;align-self:center}
@media (max-width:760px){.feature__body{grid-template-columns:1fr}.feature__body .feature__foot{grid-column:1;grid-row:auto}}
.company__grid{grid-template-columns:minmax(0,.75fr) minmax(0,1.25fr)}
.company__img{aspect-ratio:auto}
.company__img img{height:auto}
@media (max-width:860px){.company__grid{grid-template-columns:1fr}.company__img{max-width:380px}}
.banner,.figure,.post__img{aspect-ratio:auto}
.banner img,.figure img,.post__img img{height:auto;object-fit:initial}
.model__img{padding:0;overflow:hidden;background:var(--soft)}
.model__img img{width:100%;height:100%;max-height:none;object-fit:cover}
@media (max-width:640px){.model__img{height:auto;aspect-ratio:3/4;max-width:260px}}
.top__img{aspect-ratio:auto;min-height:320px;position:relative}
.top__img img{position:absolute;inset:0}
@media (max-width:480px){.top__img{min-height:260px}}
.model{scroll-margin-top:110px}
@media (max-width:540px){
  .card{display:grid;grid-template-columns:44px minmax(0,1fr);gap:6px 16px;align-items:start}
  .card__icon{grid-row:1 / span 2}
  .card h3,.card p{grid-column:2}
}

/* слайдер PRO: квадратное фото, модель целиком, фон ячейки = фон снимка */
.top__img{--photo-bg:#f6f5f1;background:var(--photo-bg);min-height:0;position:static;display:flex;align-items:center;justify-content:center}
.top__img img{position:static;width:100%;height:auto;aspect-ratio:1/1;object-fit:contain}
@media (max-width:560px){
  .top{grid-template-columns:1fr}
  .top__img{height:240px}
  .top__img img{width:auto;height:100%}
  .top__more{font-size:15px;gap:14px}
}

/* промо-экран: светлый градиент королевского синего, светлее за слайдером */
.promo{background:linear-gradient(100deg,var(--royal) 0%,var(--royal-mid) 45%,var(--royal-light) 100%)}
.promo__lead,.promo__note{color:rgba(255,255,255,.92)}
.promo .btn{background:var(--on-dark);border-color:var(--on-dark);color:var(--royal)}
.promo .btn:hover{background:#eaf0ff;border-color:#eaf0ff;color:var(--royal)}
.promo .slider__count{color:rgba(255,255,255,.85)}
.promo .slider__dot{background:rgba(255,255,255,.45)}
.promo .slider__dot.is-active{background:var(--on-dark)}
.slider__btn--next{background:var(--royal);box-shadow:inset 0 0 0 2px rgba(255,255,255,.35)}
@media (max-width:900px){.promo{background:linear-gradient(180deg,var(--royal) 0%,var(--royal-mid) 55%,var(--royal-light) 100%)}}
.prose td a{color:var(--accent-strong);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.prose td a:hover{color:var(--ink)}
.company__text p a{color:var(--on-dark);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.company__text p a:hover{color:var(--accent)}
.prose p a,.prose li a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}