/* ============================================================
   Эксперт — дезинфекция и чистка вентиляции
   Дизайн-система + компоненты
   ============================================================ */

:root{
  /* палитра: чистый фон, тёмный текст, бирюзовый акцент из логотипа */
  --bg:        #ffffff;
  --bg-soft:   #f3f8fb;
  --bg-deep:   #0c1b22;     /* тёмная «канальная» секция */
  --ink:       #0f2530;
  --ink-2:     #3a5563;
  --muted:     #6c8794;
  --line:      #e2ecf1;

  --accent:    #06a6c0;     /* основной акцент */
  --accent-d:  #0784a0;
  --accent-l:  #19c4dd;
  --air:       #7fe7f4;     /* свежий воздух */
  --grime:     #2b2114;     /* грязь в канале */
  --grime-2:   #4a3a22;
  --warn:      #ff7a3d;     /* «грязный» акцент */

  --radius:    18px;
  --radius-sm: 12px;
  --shadow:    0 18px 50px -22px rgba(13,52,66,.45);
  --shadow-sm: 0 8px 24px -12px rgba(13,52,66,.35);
  --container: 1180px;
  --ease:      cubic-bezier(.16,1,.3,1);
  --header-h:  74px;
}

*,*::before,*::after{box-sizing:border-box}
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
html.lenis{scroll-behavior:auto}
.lenis.lenis-smooth{scroll-behavior:auto}
.lenis.lenis-stopped{overflow:hidden}

body{
  margin:0;
  font-family:"Golos Text",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
  overflow-x:clip;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3{line-height:1.12;letter-spacing:-.02em;margin:0;font-weight:800}
::selection{background:var(--accent);color:#fff}

.container{width:100%;max-width:var(--container);margin-inline:auto;padding-inline:22px}

.skip-link{
  position:fixed;left:12px;top:-60px;z-index:300;background:var(--accent);color:#fff;
  padding:10px 16px;border-radius:10px;transition:top .2s;
}
.skip-link:focus{top:12px}

/* ---------- Кнопки ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55em;justify-content:center;
  padding:13px 22px;border-radius:999px;font-weight:700;font-size:.96rem;
  transition:transform .25s var(--ease),box-shadow .25s,background .25s,color .25s;
  white-space:nowrap;
}
.btn .ico{width:1.15em;height:1.15em;fill:currentColor;flex:none}
.btn--call{background:var(--accent);color:#fff;box-shadow:0 12px 26px -12px rgba(6,166,192,.85)}
.btn--call:hover{background:var(--accent-d);transform:translateY(-2px)}
.btn--ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent-d);transform:translateY(-2px)}
.btn--lg{padding:16px 28px;font-size:1.04rem}
.btn--block{width:100%}

/* ---------- Линии воздушного потока (фон) ---------- */
.airflow{
  position:absolute;inset:0;width:100%;height:100%;z-index:0;pointer-events:none;
  opacity:.5;color:var(--accent);
}
.airflow__line{
  fill:none;stroke:currentColor;stroke-width:2;opacity:.18;
  stroke-dasharray:14 22;
  animation:flow 26s linear infinite;
}
.airflow__line:nth-child(2){animation-duration:34s;color:var(--air)}
.airflow__line:nth-child(3){animation-duration:30s}
.airflow__line:nth-child(4){animation-duration:38s;color:var(--air)}
@keyframes flow{to{stroke-dashoffset:-720}}

/* ============================================================
   ШАПКА
   ============================================================ */
.header{
  position:sticky;top:0;z-index:120;
  background:rgba(255,255,255,.82);
  backdrop-filter:saturate(160%) blur(14px);
  border-bottom:1px solid var(--line);
}
.header__inner{display:flex;align-items:center;gap:18px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand__logo{height:46px;width:auto;display:block}
.brand__sub{font-size:.64rem;line-height:1.25;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.02em;padding-left:12px;border-left:1.5px solid var(--line)}

.nav{display:flex;gap:6px;margin-left:auto}
.nav a{
  padding:9px 13px;border-radius:10px;font-weight:600;font-size:.95rem;color:var(--ink-2);
  position:relative;transition:color .2s,background .2s;
}
.nav a:hover{color:var(--accent-d);background:var(--bg-soft)}

.header__cta{display:flex;align-items:center;gap:14px;margin-left:8px}
.phone-link{font-weight:800;font-size:1.02rem;white-space:nowrap}
.phone-link:hover{color:var(--accent-d)}

.burger{display:none;flex-direction:column;gap:5px;padding:8px;margin-left:auto}
.burger span{width:24px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

.mobile-menu{
  display:flex;flex-direction:column;padding:8px 22px 18px;gap:2px;
  border-bottom:1px solid var(--line);background:#fff;
}
.mobile-menu[hidden]{display:none}
.mobile-menu a{padding:13px 8px;font-weight:700;border-bottom:1px solid var(--line)}
.mobile-menu a:last-child{border-bottom:0}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;overflow:hidden;
  min-height:clamp(560px,86vh,820px);
  display:flex;align-items:center;
  background:
    radial-gradient(120% 80% at 80% -10%,rgba(6,166,192,.12),transparent 60%),
    radial-gradient(90% 60% at 10% 110%,rgba(127,231,244,.16),transparent 55%),
    var(--bg);
}
.hero__dust{position:absolute;inset:0;width:100%;height:100%;z-index:1}
.hero__inner{position:relative;z-index:2;max-width:880px;padding-block:60px}
.hero__eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:.86rem;
  color:var(--accent-d);background:rgba(6,166,192,.09);border:1px solid rgba(6,166,192,.2);
  padding:7px 15px;border-radius:999px;margin:0 0 22px;
}
.hero__eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 0 rgba(6,166,192,.6);animation:pdot 2.4s infinite}
@keyframes pdot{70%{box-shadow:0 0 0 9px rgba(6,166,192,0)}100%{box-shadow:0 0 0 0 rgba(6,166,192,0)}}
.hero__title{font-size:clamp(2.3rem,6vw,4.4rem);font-weight:900;margin-bottom:22px}
.grad{background:linear-gradient(100deg,var(--accent),var(--accent-l) 55%,var(--air));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero__lead{font-size:clamp(1.05rem,2vw,1.28rem);color:var(--ink-2);max-width:680px;margin-bottom:32px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px}
.hero__hint{display:inline-flex;align-items:center;gap:8px;color:var(--muted);font-weight:600;font-size:.95rem}
.hero__hint-arrow{display:inline-block;animation:bob 1.8s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(6px)}}

/* ============================================================
   ⭐ SCROLL-TO-CLEAN
   ============================================================ */
.clean-stage{position:relative;height:240vh;background:var(--bg-deep)}
.clean-vp{
  position:sticky;top:0;height:100vh;overflow:hidden;
  display:flex;align-items:stretch;
}
.clean-layer{position:absolute;inset:0;background-size:cover;background-position:center}
/* чистый канал (база) */
.clean-layer--clean{filter:saturate(1.12) brightness(1.12) contrast(1.03)}
.clean-layer--clean::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(120% 85% at 50% 28%,rgba(11,182,214,.10),transparent 55%),
    linear-gradient(180deg,rgba(8,28,38,.34),rgba(8,28,38,.10) 38%,rgba(8,28,38,.7));
}
/* грязный слой: ТОТ ЖЕ кадр, затемнён; стирается сверху вниз (--p:0..1) */
.clean-layer--dirty{
  clip-path:inset(calc(var(--p,0)*100%) 0 0 0);
  background-color:#15100a;
  filter:brightness(.46) sepia(.5) contrast(1.06) saturate(.8);
}
.grime{position:absolute;inset:0;background-size:cover;background-position:center;pointer-events:none}
/* реальная текстура жирного канала поверх — придаёт настоящую грязь */
.grime--grease{mix-blend-mode:multiply;opacity:.55;filter:contrast(1.25) brightness(.7)}
/* процедурная копоть */
.grime--soot{background-image:url('assets/textures/grime-soot.png');background-size:cover;mix-blend-mode:multiply;opacity:.9}
/* виньетка + жирные пятна по углам */
.grime--vignette{
  background:
    radial-gradient(78% 62% at 50% 45%,transparent 32%,rgba(0,0,0,.5) 100%),
    radial-gradient(42% 32% at 20% 26%,rgba(70,52,24,.55),transparent 60%),
    radial-gradient(46% 36% at 82% 74%,rgba(20,14,6,.7),transparent 60%);
}
/* светящаяся «зачистка» на границе грязь/чистота */
.sweep{
  position:absolute;left:0;right:0;top:calc(var(--p,0)*100%);
  height:0;z-index:5;pointer-events:none;opacity:0;transition:opacity .35s;
}
.sweep.is-on{opacity:1}
.sweep__glow{
  position:absolute;left:-5%;right:-5%;top:50%;height:170px;transform:translateY(-50%);
  background:radial-gradient(55% 100% at 50% 50%,rgba(127,231,244,.4),rgba(11,182,214,.12) 55%,transparent 72%);
  filter:blur(8px);
}
.sweep__line{
  position:absolute;left:0;right:0;top:50%;height:3px;transform:translateY(-50%);
  background:linear-gradient(90deg,transparent,rgba(189,238,249,.6) 10%,#fff 50%,rgba(189,238,249,.6) 90%,transparent);
  box-shadow:0 0 18px 3px rgba(127,231,244,.85),0 0 46px 10px rgba(11,182,214,.45);
}
.sweep__spark{position:absolute;top:50%;width:6px;height:6px;border-radius:50%;background:#fff;box-shadow:0 0 12px 3px rgba(127,231,244,.95)}
.sweep__spark--1{left:16%;animation:spark 1.9s ease-in-out infinite}
.sweep__spark--2{left:52%;animation:spark 2.4s ease-in-out infinite .5s}
.sweep__spark--3{left:81%;animation:spark 2.1s ease-in-out infinite .9s}
@keyframes spark{0%,100%{transform:translate(0,-50%) scale(.5);opacity:.35}50%{transform:translate(0,-170%) scale(1);opacity:1}}
.clean-dust{position:absolute;inset:0;width:100%;height:100%;z-index:4;pointer-events:none}

.clean-copy{position:relative;z-index:6;align-self:stretch;display:flex;flex-direction:column;justify-content:space-between;padding-block:90px 70px;width:100%}
.clean-copy__top{display:flex;justify-content:center}
.pill{display:inline-flex;align-items:center;gap:9px;padding:9px 18px;border-radius:999px;font-weight:700;font-size:.92rem;backdrop-filter:blur(4px)}
.pill__dot{width:8px;height:8px;border-radius:50%;flex:none}
.pill--dirty{background:rgba(43,33,20,.6);color:#f4d9b8;border:1px solid rgba(255,170,90,.35)}
.pill--dirty .pill__dot{background:#d99a4e}
.pill--clean{background:rgba(6,166,192,.22);color:#dff7fc;border:1px solid rgba(127,231,244,.45);margin-bottom:18px}
.pill--clean .pill__dot{background:var(--air);box-shadow:0 0 10px var(--air)}
.clean-copy__bottom{max-width:640px;color:#eaf7fb;display:flex;flex-direction:column;align-items:flex-start}
.clean-copy__title{font-size:clamp(1.9rem,4.6vw,3.2rem);color:#fff;margin-bottom:14px;text-shadow:0 4px 30px rgba(0,0,0,.5)}
.clean-copy__bottom p{color:#cfe6ee;font-size:1.06rem;text-shadow:0 2px 16px rgba(0,0,0,.5)}

/* ============================================================
   СЕКЦИИ
   ============================================================ */
.section{position:relative;z-index:1;padding-block:clamp(64px,9vw,110px)}
.section__head{max-width:760px;margin-bottom:48px}
.section__eyebrow{display:inline-block;color:var(--accent-d);font-weight:800;text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;margin:0 0 12px}
.section__title{font-size:clamp(1.7rem,4vw,2.9rem);margin-bottom:14px}
.section__sub{color:var(--ink-2);font-size:1.08rem;margin:0}

/* ---------- Услуги ---------- */
.services{background:var(--bg)}
.services__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.service{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  box-shadow:var(--shadow);display:flex;flex-direction:column;
}
.service__body{padding:26px 26px 30px;display:flex;flex-direction:column;gap:14px;flex:1}
.service__title{font-size:1.38rem;font-weight:800}
.service__price{font-size:1.7rem;font-weight:900;color:var(--accent-d);margin:0}
.service__price span{font-size:.95rem;color:var(--muted);font-weight:700;vertical-align:middle}
.service p{color:var(--ink-2);margin:0;font-size:1rem}
.service__list{list-style:none;margin:4px 0 0;padding:0;display:flex;flex-direction:column;gap:9px}
.service__list li{position:relative;padding-left:30px;color:var(--ink-2);font-size:.97rem}
.service__list li::before{
  content:"";position:absolute;left:0;top:3px;width:19px;height:19px;border-radius:50%;
  background:rgba(6,166,192,.12) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m5 12 4 4 10-10' fill='none' stroke='%2306a6c0' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/13px no-repeat;
}
.service__body .btn{margin-top:auto;align-self:flex-start}

/* ---------- Ползунок «было/стало» ---------- */
.ba{
  position:relative;aspect-ratio:4/3;overflow:hidden;user-select:none;
  background:#0c1b22;touch-action:pan-y;cursor:ew-resize;
}
.ba__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ba__before{position:absolute;inset:0;width:100%;height:100%;overflow:hidden;clip-path:inset(0 calc(100% - var(--ba,55%)) 0 0)}
.ba__tag{
  position:absolute;top:14px;z-index:4;padding:5px 13px;border-radius:999px;font-size:.78rem;font-weight:800;
  text-transform:uppercase;letter-spacing:.05em;backdrop-filter:blur(3px);
}
.ba__tag--before{left:14px;background:rgba(43,33,20,.7);color:#ffd9b0}
.ba__tag--after{right:14px;background:rgba(6,166,192,.85);color:#fff}
.ba__line{position:absolute;top:0;bottom:0;left:var(--ba,55%);width:3px;background:#fff;z-index:5;transform:translateX(-50%);box-shadow:0 0 14px rgba(0,0,0,.4)}
.ba__handle{
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  width:46px;height:46px;border-radius:50%;background:#fff;color:var(--accent-d);
  display:grid;place-items:center;font-size:1.1rem;font-weight:700;
  box-shadow:0 6px 18px rgba(0,0,0,.35);
}
.ba__range{
  position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;z-index:6;
}

/* ---------- Юр-блок ---------- */
.legal{
  margin-top:34px;display:flex;gap:20px;align-items:flex-start;
  background:linear-gradient(120deg,var(--bg-soft),#fff);
  border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:var(--radius);padding:26px 28px;
}
.legal__ico{width:42px;height:42px;flex:none;color:var(--accent-d)}
.legal h3{font-size:1.2rem;margin-bottom:8px}
.legal p{margin:0;color:var(--ink-2)}

/* ---------- Отрасли ---------- */
.industries{background:var(--bg-soft)}
.ind-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:16px}
.ind{
  display:flex;flex-direction:column;gap:12px;align-items:flex-start;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:20px 18px;font-weight:700;transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;
}
.ind:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:rgba(6,166,192,.4)}
.ind__ic{width:46px;height:46px;border-radius:12px;background:rgba(6,166,192,.1);display:grid;place-items:center;color:var(--accent-d)}
.ind__ic svg{width:26px;height:26px}

/* ---------- Счётчики ---------- */
.counters{background:var(--bg-deep);color:#fff;overflow:hidden}
.counters .container{position:relative;z-index:2}
.counters__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.counter{text-align:center;padding:18px}
.counter__num{display:block;font-size:clamp(2.2rem,5vw,3.4rem);font-weight:900;color:var(--air);letter-spacing:-.03em;line-height:1}
.counter__label{display:block;margin-top:10px;color:#aecdda;font-weight:600;font-size:.98rem}
.counters__note{color:#5f8294;font-size:.82rem;margin-top:26px}

/* ---------- Галерея ---------- */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:200px;gap:14px}
.gal-item{position:relative;overflow:hidden;border-radius:var(--radius-sm);background:#0c1b22}
.gal-item img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease),opacity .3s}
.gal-item::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(6,166,192,.35));opacity:0;transition:opacity .3s}
.gal-item:hover img{transform:scale(1.07)}
.gal-item:hover::after{opacity:1}
.gal-item--wide{grid-column:span 2;grid-row:span 2}

/* ---------- Клиенты ---------- */
.clients{background:var(--bg-soft)}
.client-row{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:22px}
.client{
  flex:1 1 160px;max-width:210px;height:110px;display:grid;place-items:center;padding:18px 24px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);
  filter:grayscale(1);opacity:.72;transition:.35s;
}
.client img{max-height:70px;width:auto;object-fit:contain}
.client:hover{filter:none;opacity:1;transform:translateY(-4px);box-shadow:var(--shadow-sm)}

/* ---------- Сертификаты ---------- */
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cert{
  display:flex;flex-direction:column;gap:0;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);transition:transform .3s var(--ease),box-shadow .3s;
}
.cert:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.cert img{width:100%;height:300px;object-fit:contain;background:var(--bg-soft);padding:14px}
.cert__cap{padding:14px 18px;font-weight:700;border-top:1px solid var(--line);text-align:left;font-size:.95rem}

/* ---------- Статьи ---------- */
.art-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.art{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px;
  display:flex;flex-direction:column;gap:12px;transition:transform .3s var(--ease),box-shadow .3s,border-color .3s;
}
.art:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:rgba(6,166,192,.35)}
.art__ic{width:50px;height:50px;border-radius:14px;background:rgba(6,166,192,.1);color:var(--accent-d);display:grid;place-items:center}
.art__ic svg{width:28px;height:28px}
.art h3{font-size:1.16rem}
.art p{color:var(--ink-2);font-size:.98rem;margin:0;flex:1}
.art__more{color:var(--accent-d);font-weight:700;font-size:.95rem;margin-top:4px}
.art__more:hover{text-decoration:underline}

/* ---------- Контакты ---------- */
.contacts__grid{display:grid;grid-template-columns:1fr 1.1fr;gap:30px;align-items:stretch}
.contacts__info{display:flex;flex-direction:column;gap:14px}
.contact-card{
  display:flex;align-items:center;gap:16px;padding:18px 20px;border-radius:var(--radius-sm);
  background:#fff;border:1px solid var(--line);transition:.25s;
}
.contact-card--phone{background:linear-gradient(120deg,rgba(6,166,192,.1),#fff);border-color:rgba(6,166,192,.35)}
a.contact-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:var(--accent)}
.contact-card__ic{width:46px;height:46px;border-radius:12px;flex:none;display:grid;place-items:center;background:rgba(6,166,192,.12);color:var(--accent-d)}
.contact-card__ic svg{width:24px;height:24px}
.contact-card span small{display:block;color:var(--muted);font-size:.82rem;font-weight:600}
.contact-card span strong{font-size:1.12rem}
.contacts__map{position:relative;border-radius:var(--radius);overflow:hidden;min-height:340px;border:1px solid var(--line);box-shadow:var(--shadow-sm);display:block}
.contacts__map iframe{width:100%;height:100%;min-height:340px;border:0;filter:grayscale(.2)}
.contacts__map-hint{position:absolute;left:14px;bottom:14px;background:#fff;color:var(--accent-d);font-weight:700;padding:9px 15px;border-radius:999px;box-shadow:var(--shadow-sm);font-size:.9rem}

/* ============================================================
   ПОДВАЛ
   ============================================================ */
.footer{background:var(--bg-deep);color:#cfe2ea;padding-block:50px}
.footer__inner{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px;align-items:start}
.brand--footer .brand__logo{height:50px}
.footer__brand p{margin:14px 0 0;color:#8fb0bd;font-size:.95rem}
.footer__col{display:flex;flex-direction:column;gap:10px}
.footer__col a{color:#dbeaf0;font-weight:600}
.footer__col a:hover{color:var(--air)}
.footer__col--legal{align-items:flex-start}
.footer__col--legal span{color:#6f93a1;font-size:.88rem}

/* ============================================================
   FAB (липкая кнопка «Позвонить»)
   ============================================================ */
.fab{
  position:fixed;right:20px;bottom:20px;z-index:130;
  display:inline-flex;align-items:center;gap:10px;
  background:var(--accent);color:#fff;font-weight:800;
  padding:14px 22px 14px 18px;border-radius:999px;
  box-shadow:0 16px 34px -10px rgba(6,166,192,.9);
  transform:translateY(140%);transition:transform .45s var(--ease),background .25s;
}
.fab.is-visible{transform:translateY(0)}
.fab:hover{background:var(--accent-d)}
.fab svg{width:22px;height:22px;fill:#fff;position:relative;z-index:2}
.fab__pulse{position:absolute;inset:0;border-radius:999px;background:var(--accent);z-index:1;animation:fabpulse 2.2s ease-out infinite}
@keyframes fabpulse{0%{box-shadow:0 0 0 0 rgba(6,166,192,.55)}100%{box-shadow:0 0 0 22px rgba(6,166,192,0)}}
.fab__text{position:relative;z-index:2}

/* ============================================================
   ЛАЙТБОКС
   ============================================================ */
.lightbox{
  position:fixed;inset:0;z-index:200;background:rgba(7,18,24,.94);
  display:flex;align-items:center;justify-content:center;padding:30px;
  opacity:0;animation:fade .25s forwards;
}
.lightbox[hidden]{display:none}
@keyframes fade{to{opacity:1}}
.lightbox__img{max-width:92vw;max-height:88vh;border-radius:10px;box-shadow:0 30px 80px rgba(0,0,0,.6)}
.lightbox__close,.lightbox__nav{
  position:absolute;color:#fff;background:rgba(255,255,255,.12);border-radius:50%;
  width:54px;height:54px;display:grid;place-items:center;font-size:1.7rem;transition:.2s;
}
.lightbox__close{top:24px;right:24px;font-size:1.3rem}
.lightbox__close:hover,.lightbox__nav:hover{background:var(--accent)}
.lightbox__prev{left:24px;top:50%;transform:translateY(-50%)}
.lightbox__next{right:24px;top:50%;transform:translateY(-50%)}

/* ============================================================
   REVEAL
   ============================================================ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ============================================================
   АДАПТИВ
   ============================================================ */
@media (max-width:1080px){
  .nav{display:none}
  .burger{display:flex}
  .header__cta .btn--call{display:none}
  .footer__inner{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1/-1}
}
@media (max-width:860px){
  body{font-size:16px}
  .services__grid{grid-template-columns:1fr}
  .cert-grid{grid-template-columns:1fr 1fr}
  .art-grid{grid-template-columns:1fr}
  .contacts__grid{grid-template-columns:1fr}
  .counters__grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .gallery{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px}
  .phone-link{display:none}
  .clean-stage{height:200vh}
}
@media (max-width:560px){
  .container{padding-inline:16px}
  .hero{min-height:auto;padding-block:30px}
  .hero__actions .btn{width:100%}
  .cert-grid{grid-template-columns:1fr}
  .cert img{height:360px}
  .client{flex-basis:130px;height:90px;padding:14px}
  .gallery{grid-template-columns:1fr 1fr;grid-auto-rows:130px}
  .gal-item--wide{grid-column:span 2;grid-row:span 1}
  .fab__text{display:none}
  .fab{padding:15px;right:16px;bottom:16px}
  .legal{flex-direction:column;gap:12px}
  .brand__sub{display:none}
  .brand__logo{height:42px}
}

/* ============================================================
   ДОСТУПНОСТЬ: prefers-reduced-motion → спокойная статика
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
  .clean-stage{height:auto}
  .clean-vp{position:relative;height:auto;min-height:64vh}
  .clean-layer--dirty{clip-path:inset(100% 0 0 0)} /* сразу чисто */
  .sweep,.hero__dust,.clean-dust,.airflow,.hero__hint-arrow{display:none}
  .fab{transform:none}
}