/* ventilatsioon.abctoru.ee — дизайн-система «Внутри канала».
   Графит и оцинкованная сталь, белый лист; голубой (#25a9e0, из логотипа) — только «воздух»; тёплый пыльный — только «грязь».
   Шрифты свои: Onest (текст и заголовки), JetBrains Mono (инженерные подписи). */
@font-face{font-family:Onest;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/fonts/onest-latin.052df74533.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:Onest;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/fonts/onest-latin-ext.14e7d3079b.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1E9F,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:Onest;font-style:normal;font-display:swap;font-weight:100 900;src:url(/assets/fonts/onest-cyrillic.68e5e01d62.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-display:swap;font-weight:100 800;src:url(/assets/fonts/mono-latin.18be452724.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-display:swap;font-weight:100 800;src:url(/assets/fonts/mono-latin-ext.79bfdab9ba.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+1E00-1E9F,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-display:swap;font-weight:100 800;src:url(/assets/fonts/mono-cyrillic.d274604c40.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}

:root{
  --ink:#0b0e11;--ink-2:#14191e;--ink-3:#1f262d;
  --paper:#f3f5f6;--white:#fff;--line:#dde3e7;--line-d:rgba(255,255,255,.12);
  --text:#1b232a;--mute:#56636e;--on-d:#eef2f4;--on-d2:#a4b0ba;--on-d3:#76838d;
  --air:#25a9e0;--air-ink:#0a6c95;--dust:#a3875f;--err:#c2342e;--ok:#14804a;
  --sans:Onest,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --hdr:72px;--r:20px;--ease:cubic-bezier(.16,1,.3,1);
  color-scheme:light;
}
*,*::before,*::after{box-sizing:border-box}
html{overscroll-behavior-x:none;-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--hdr) + 12px)}
@media (prefers-reduced-motion:no-preference){html:not(.lenis){scroll-behavior:smooth}}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
.lenis.lenis-stopped{overflow:hidden}
body{overscroll-behavior-x:none;margin:0;background:var(--white);color:var(--text);font-family:var(--sans);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img,svg,canvas{display:block;max-width:100%}
a{color:inherit}
h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.03em;color:var(--ink);text-wrap:balance}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
strong{font-weight:650;color:var(--ink)}
.mono{font-family:var(--mono);font-size:.78rem;letter-spacing:.06em;text-transform:uppercase}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:12px;top:-80px;z-index:100;background:var(--white);color:var(--ink);padding:.7rem 1rem;border-radius:10px;font-weight:600}
.skip:focus{top:12px}
:focus-visible{outline:2px solid var(--air);outline-offset:3px;border-radius:4px}
.wrap{width:100%;max-width:1280px;margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
@media (min-width:768px){.wrap{padding-left:max(32px,env(safe-area-inset-left,0px));padding-right:max(32px,env(safe-area-inset-right,0px))}}
.ic{width:1.2em;height:1.2em;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}
.ic--arrow{transition:transform .35s var(--ease)}

html.intro [data-intro]{opacity:0}
html.nav-open,html.nav-open body{overflow:hidden}

/* подписи-«шильдики» */
.eyebrow{display:inline-flex;align-items:center;gap:.6rem;margin:0 0 1.2rem;font-family:var(--mono);font-size:.74rem;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--air-ink)}
.eyebrow::before{content:"";width:7px;height:7px;background:var(--air);flex-shrink:0}
[data-tone="dark"] .eyebrow{color:var(--on-d2)}
.h2{font-size:clamp(1.8rem,3.6vw,3.25rem);line-height:1.06;letter-spacing:-.035em}

/* кнопки и ссылки */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.6rem;min-height:48px;padding:.8rem 1.35rem;border-radius:999px;border:1px solid transparent;font:inherit;font-size:.97rem;font-weight:600;line-height:1.2;text-decoration:none;cursor:pointer;transition:background-color .3s var(--ease),color .3s var(--ease),border-color .3s,transform .2s var(--ease)}
.btn:active{transform:scale(.97)}
.btn:hover .ic--arrow{transform:translateX(4px)}
.btn--light{background:var(--white);color:var(--ink)}
.btn--light:hover{background:#dde6eb}
.btn--cta{background:var(--cta-bg,var(--ink));color:var(--cta-fg,var(--white))}
.btn--cta:hover{background:var(--cta-hover,#2a333b)}
.btn--ghost-dark{color:var(--white);border-color:rgba(255,255,255,.28)}
.btn--ghost-dark:hover{border-color:rgba(255,255,255,.6)}
.btn--lg{min-height:56px;padding:1rem 1.65rem;font-size:1.02rem}
.btn--block{width:100%}
.link-u{position:relative;display:inline-flex;align-items:center;gap:.45rem;font-weight:600;text-decoration:none;color:var(--ink);padding-block:.3rem}
.link-u::after{content:"";position:absolute;left:0;right:0;bottom:0;height:1px;background:currentColor;transform-origin:right;transform:scaleX(.35);opacity:.45;transition:transform .5s var(--ease),opacity .3s}
.link-u:hover::after{transform-origin:left;transform:scaleX(1);opacity:1}
.link-u:hover .ic--arrow{transform:translateX(4px)}
.link-u--light{color:var(--white)}

/* шапка */
.hdr{position:fixed;inset:0 0 auto;z-index:50;height:var(--hdr);color:var(--white);--cta-bg:var(--white);--cta-fg:var(--ink);--cta-hover:#dde6eb;transition:background-color .4s var(--ease),color .4s var(--ease),border-color .4s;border-bottom:1px solid transparent}
.hdr.is-scrolled{background:rgba(11,14,17,.78);-webkit-backdrop-filter:saturate(1.5) blur(16px);backdrop-filter:saturate(1.5) blur(16px);border-color:var(--line-d)}
.hdr[data-on="light"].is-scrolled{background:rgba(255,255,255,.84);color:var(--ink);border-color:var(--line);--cta-bg:var(--ink);--cta-fg:var(--white);--cta-hover:#2a333b}
.hdr__in{height:100%;display:flex;align-items:center;gap:1.4rem}
.hdr__logo{display:flex;align-items:center;gap:.75rem;margin-right:auto;text-decoration:none;color:inherit}
.hdr__logo img{height:36px;width:auto}
.logo-on-light,.hdr[data-on="light"].is-scrolled .logo-on-dark{display:none}
.hdr[data-on="light"].is-scrolled .logo-on-light{display:block}
.hdr__tag{font-size:.82rem;font-weight:500;line-height:1.2;opacity:.72;padding-left:.75rem;border-left:1px solid currentColor;max-width:10rem}
.hdr__nav{display:none;gap:1.5rem}
.hdr__nav a,.hdr__phone{position:relative;font-size:.93rem;font-weight:500;text-decoration:none;opacity:.86;transition:opacity .2s}
.hdr__nav a::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .45s var(--ease)}
.hdr__nav a:hover,.hdr__nav a[aria-current]{opacity:1}
.hdr__nav a:hover::after,.hdr__nav a[aria-current]::after{transform:scaleX(1);transform-origin:left}
.hdr__lang{display:none;gap:.1rem;font-family:var(--mono);font-size:.74rem}
.hdr__lang a,.mnav__lang a{padding:.35rem .5rem;border-radius:6px;text-decoration:none;opacity:.6;letter-spacing:.06em}
.hdr__lang a[aria-current],.mnav__lang a[aria-current]{opacity:1;box-shadow:inset 0 0 0 1px currentColor}
.hdr__phone{display:none;align-items:center;gap:.45rem;font-family:var(--mono);font-size:.82rem}
.hdr__cta{display:none;min-height:42px;padding:.55rem 1.1rem;font-size:.9rem}
@media (min-width:600px){.hdr__cta{display:inline-flex}}
@media (min-width:1120px){.hdr__nav,.hdr__lang{display:flex}.mnav{display:none}}
@media (min-width:1380px){.hdr__phone{display:inline-flex}}
@media (max-width:420px){.hdr__tag{display:none}}

/* мобильное меню */
.mnav summary{list-style:none;display:grid;place-items:center;width:46px;height:46px;cursor:pointer;border-radius:12px}
.mnav summary::-webkit-details-marker{display:none}
.mnav__bars{position:relative;width:22px;height:12px}
.mnav__bars i{position:absolute;left:0;right:0;height:2px;border-radius:2px;background:currentColor;transition:transform .45s var(--ease),top .45s var(--ease)}
.mnav__bars i:first-child{top:0}.mnav__bars i:last-child{top:10px}
.mnav[open] .mnav__bars i:first-child{top:5px;transform:rotate(45deg)}
.mnav[open] .mnav__bars i:last-child{top:5px;transform:rotate(-45deg)}
.mnav__panel{position:fixed;left:0;right:0;top:var(--hdr);bottom:0;z-index:49;overflow:auto;background:var(--ink);color:var(--white);display:flex;flex-direction:column;justify-content:space-between;gap:2rem;padding:1.5rem max(16px,env(safe-area-inset-right,0px)) calc(1.5rem + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.mnav__links{display:grid}
.mnav__links a{font-size:clamp(1.7rem,7vw,2.4rem);font-weight:600;letter-spacing:-.03em;text-decoration:none;padding:.45rem 0;border-bottom:1px solid var(--line-d)}
.mnav__links a[aria-current]{color:var(--air)}
.mnav__foot{display:grid;gap:.8rem}
.mnav__lang{display:flex;gap:.4rem;font-family:var(--mono);font-size:.85rem}
.mnav__phone{display:inline-flex;align-items:center;gap:.6rem;font-family:var(--mono);font-size:1.05rem;text-decoration:none}
.hdr:has(.mnav[open]){background:var(--ink);color:var(--white)}
.hdr:has(.mnav[open]) .logo-on-dark{display:block}.hdr:has(.mnav[open]) .logo-on-light{display:none}

/* первый экран */
.hero{position:relative;overflow:hidden;background:var(--ink);color:var(--on-d)}
.hero h1{color:var(--white)}
.hero__in{position:relative;z-index:2}
.hero--home .hero__in{padding-top:calc(var(--hdr) + clamp(2.5rem,9vh,6rem));padding-bottom:clamp(2rem,4vh,3rem)}
.hero__eyebrow{display:block;line-height:1.7}
.hero__eyebrow::before{display:inline-block;margin-right:.6rem;vertical-align:1px}
.hero__eyebrow span{color:var(--on-d3)}
.hero__eyebrow i{font-style:normal;margin-inline:.1rem;opacity:.5}
.hero__eyebrow span::before{content:"·";margin-inline:.6rem;opacity:.5}
.hero__title{font-size:clamp(2.1rem,4.4vw,4.25rem);line-height:1.02;letter-spacing:-.04em;font-weight:600;max-width:17ch}
.hero__l1,.hero__l2{display:block}
.hero__l2{color:var(--on-d3)}
.hero__lead{font-size:clamp(1.05rem,1.5vw,1.22rem);line-height:1.55;color:var(--on-d2);max-width:35rem;margin-top:clamp(1.4rem,3vh,2rem)}
.hero__cta{display:flex;flex-wrap:wrap;align-items:center;gap:1rem 1.6rem;margin-top:clamp(1.6rem,4vh,2.4rem)}
.hero__phone{display:inline-flex;align-items:center;gap:.5rem;margin-top:clamp(1.8rem,5vh,3rem);color:var(--on-d2);text-decoration:none}
.hero__phone:hover{color:var(--white)}
.hero__media{position:relative;margin-top:-2.5rem}
.hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,var(--ink) 0%,rgba(11,14,17,0) 30%,rgba(11,14,17,0) 80%,var(--ink) 100%);pointer-events:none}
.hero__poster{width:100%;aspect-ratio:3/4;object-fit:cover}
.hero__gl{position:absolute;inset:0;width:100%;height:100%;opacity:0;transition:opacity 1.2s var(--ease)}
.hero__gl.is-on{opacity:1}
@media (min-width:900px){
  .hero--home{min-height:min(100svh,1040px);display:flex;align-items:center}
  .hero--home .hero__in{padding-top:calc(var(--hdr) + 3rem);padding-bottom:4rem}
  .hero__media{position:absolute;inset:0;margin:0}
  .hero__media::after{background:linear-gradient(90deg,var(--ink) 0%,rgba(11,14,17,.86) 28%,rgba(11,14,17,0) 58%),linear-gradient(0deg,var(--ink) 0%,rgba(11,14,17,0) 22%)}
  .hero__poster{position:absolute;inset:0;height:100%;aspect-ratio:auto}
}
.hero--page .hero__in{display:grid;gap:2.5rem;align-items:center;padding-top:calc(var(--hdr) + clamp(2.5rem,7vh,4.5rem));padding-bottom:clamp(3rem,7vh,5rem)}
.hero__title--page{font-size:clamp(2rem,4vw,3.5rem);max-width:18ch}
.crumbs{display:flex;flex-wrap:wrap;gap:.6rem;margin-bottom:1.6rem;color:var(--on-d3)}
.crumbs a{color:var(--on-d2);text-decoration:none}
.crumbs a:hover{color:var(--white)}
.hero__schema{color:var(--on-d3);max-width:560px;justify-self:end;width:100%}
@media (min-width:980px){.hero--schema .hero__in{grid-template-columns:1.15fr .85fr}}

/* секции */
.sec{padding-block:clamp(4.5rem,10vw,8.5rem);background:var(--white)}
.sec--soft{background:var(--paper)}
.sec-head{max-width:860px;margin-bottom:clamp(2.4rem,5vw,4rem)}
.sec-head__intro{font-size:clamp(1.05rem,1.4vw,1.18rem);color:var(--mute);max-width:42rem;margin-top:1.2rem}
.split{display:grid;gap:2.5rem}
@media (min-width:1000px){.split{grid-template-columns:5fr 7fr;gap:5rem;align-items:start}.split__head{position:sticky;top:calc(var(--hdr) + 2rem)}.split .sec-head{margin-bottom:0}}
.prose{max-width:46rem}
.prose p{font-size:1.06rem}
.big{font-size:clamp(1.25rem,2vw,1.5rem);line-height:1.4;color:var(--ink)}

/* услуги: крупные ряды со схемами */
.svc__list{border-top:1px solid var(--line)}
.svc__row{display:grid;gap:1.8rem;padding-block:clamp(2.5rem,5vw,4.5rem);border-bottom:1px solid var(--line);align-items:center}
.svc__fig{display:block;color:var(--ink);background:var(--paper);border-radius:var(--r);padding:clamp(1rem,3vw,2.4rem);transition:background-color .5s var(--ease)}
.svc__fig:hover{background:#e9eef1}
.svc__tag{color:var(--air-ink);margin-bottom:.9rem}
.svc__title{font-size:clamp(1.7rem,3.2vw,2.7rem);line-height:1.05;letter-spacing:-.04em;margin-bottom:1rem}
.svc__title a{text-decoration:none}
.svc__title a:hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:.15em}
.svc__txt p{color:var(--mute);max-width:30rem}
.svc__txt .link-u{margin-top:1.2rem}
@media (min-width:900px){.svc__row{grid-template-columns:7fr 5fr;gap:clamp(2.5rem,6vw,6rem)}.svc__row--flip{grid-template-columns:5fr 7fr}.svc__row--flip .svc__fig{order:2}}

/* инженерные схемы */
.schema{width:100%;height:auto;overflow:visible}
.schema .ln{fill:none;stroke:currentColor;stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}
.schema .air{fill:none;stroke:var(--air);stroke-width:2;stroke-linecap:round;stroke-dasharray:5 9;animation:airflow 1.15s linear infinite}
.schema .air--out{stroke:var(--dust)}
.schema .tip{fill:none;stroke:var(--air);stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.schema .tip--out{stroke:var(--dust)}
.schema .lbl{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;fill:currentColor;opacity:.78;paint-order:stroke;stroke:var(--schema-halo,var(--paper));stroke-width:5px;stroke-linejoin:round}
.hero .schema{--schema-halo:var(--ink)}
.svc__fig:hover .schema{--schema-halo:#e9eef1}
@keyframes airflow{to{stroke-dashoffset:-28}}

/* признаки и списки-строки */
.rows{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.rows__item{display:grid;grid-template-columns:auto 1fr;gap:1.2rem;padding-block:1.5rem;border-bottom:1px solid var(--line)}
.rows__ic{width:28px;height:28px;color:var(--air-ink);stroke-width:1.5;margin-top:.15rem}
.rows__item h3{font-size:1.18rem;letter-spacing:-.02em;margin-bottom:.35rem}
.rows__item p{color:var(--mute);margin:0}
@media (min-width:860px){.rows--grid{display:grid;grid-template-columns:1fr 1fr;column-gap:3.5rem;border-top:0}.rows--grid .rows__item:nth-child(-n+2){border-top:1px solid var(--line)}}

/* история чистки (3D) */
.story{position:relative;background:#06080a;color:var(--on-d)}
.story h2{color:var(--white)}
.story__pin{position:relative;padding-top:clamp(4rem,10vw,6rem)}
.story__head{position:relative;z-index:2;padding-bottom:2rem}
.story__stage{position:relative;aspect-ratio:4/5;max-width:100%;overflow:hidden}
.story__poster,.story__gl{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.story__gl{opacity:0;transition:opacity 1s var(--ease)}
.story__gl.is-on{opacity:1}
.story__shade{position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse at 50% 50%,transparent 42%,rgba(0,0,0,.55) 100%),linear-gradient(180deg,#06080a 0%,rgba(6,8,10,0) 14%,rgba(6,8,10,0) 86%,#06080a 100%)}
.story__ui{position:relative;z-index:2;padding-block:1.5rem 4.5rem;display:grid;gap:1.6rem}
.story__caps{list-style:none;margin:0;padding:0;display:grid}
.story__cap{grid-area:1/1;max-width:32rem;opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.story__cap.is-on{opacity:1;transform:none}
.story__cap span{display:block;color:var(--air);margin-bottom:.6rem}
.story__cap b{display:block;font-size:clamp(1.4rem,3vw,2.2rem);font-weight:650;letter-spacing:-.035em;line-height:1.1;color:var(--white);margin-bottom:.6rem}
.story__cap p{color:var(--on-d2)}
.story__meter{display:flex;align-items:center;gap:.9rem;color:var(--on-d3);max-width:32rem}
.story__meter i{flex:1;height:2px;background:var(--line-d);overflow:hidden}
.story__meter b{display:block;height:100%;transform-origin:left;transform:scaleX(var(--m,0));background:linear-gradient(90deg,var(--dust),var(--air))}
.story__flash{position:absolute;inset:0;z-index:3;background:var(--white);opacity:0;pointer-events:none}
@media (min-width:900px){
  html.js:not(.rm) .story{height:340vh}
  .story__pin{position:sticky;top:0;height:100vh;height:100svh;padding:0;overflow:hidden}
  .story__stage{position:absolute;inset:0;aspect-ratio:auto}
  .story__shade{background:radial-gradient(ellipse at 50% 50%,transparent 45%,rgba(0,0,0,.6) 100%),linear-gradient(0deg,rgba(6,8,10,.88) 0%,rgba(6,8,10,0) 42%),linear-gradient(180deg,rgba(6,8,10,.75) 0%,rgba(6,8,10,0) 28%)}
  .story__head{position:absolute;left:0;right:0;top:calc(var(--hdr) + 2.5rem);padding-bottom:0}
  .story__head>*{max-width:36rem}
  .story__ui{position:absolute;left:0;right:0;bottom:0;padding-block:0 3rem}
  html:not(.js) .story__pin,html.rm .story__pin{position:relative;height:auto;min-height:90svh}
  html:not(.js) .story__ui,html.rm .story__ui{position:relative;padding-top:60svh}
}
html.rm .story__cap,html:not(.js) .story__cap{opacity:1;transform:none;grid-area:auto;margin-bottom:1.2rem}
html.rm .story__caps,html:not(.js) .story__caps{display:block}

/* до и после */
.ba-fig{margin:0}
.ba{position:relative;aspect-ratio:16/9;max-width:100%;border-radius:var(--r);overflow:hidden;background:var(--ink);--x:50%;user-select:none;-webkit-user-select:none}
.ba__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.ba__after{position:absolute;inset:0;clip-path:inset(0 0 0 var(--x))}
.ba__line{position:absolute;top:0;bottom:0;left:var(--x);width:2px;margin-left:-1px;background:var(--white);pointer-events:none}
.ba__knob{position:absolute;top:50%;left:var(--x);width:52px;height:52px;margin:-26px 0 0 -26px;border-radius:50%;background:var(--white);color:var(--ink);display:grid;place-items:center;box-shadow:0 10px 30px rgba(0,0,0,.35);pointer-events:none;transition:transform .3s var(--ease)}
.ba:hover .ba__knob{transform:scale(1.08)}
.ba__tag{position:absolute;top:14px;padding:.35rem .65rem;border-radius:6px;background:rgba(11,14,17,.72);color:var(--white);pointer-events:none}
.ba__tag--l{left:14px}.ba__tag--r{right:14px}
.ba__range{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize;touch-action:pan-y}
.ba:has(.ba__range:focus-visible){outline:2px solid var(--air);outline-offset:4px}
.note{margin-top:1rem;font-size:.88rem;color:var(--mute)}

/* что входит */
.checks{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.checks li{display:grid;grid-template-columns:auto 1fr;gap:1rem;padding-block:1.05rem;border-bottom:1px solid var(--line);font-size:1.05rem}
.checks .ic{width:20px;height:20px;color:var(--air-ink);stroke-width:2.2;margin-top:.2rem}
.aside{margin-top:1.6rem;padding-left:1.1rem;border-left:2px solid var(--air);color:var(--mute);font-size:.98rem}

/* процесс */
.proc__wrap{position:relative}
.proc__list{list-style:none;margin:0;padding:0 0 0 2.4rem;display:grid;gap:2.4rem}
.proc__line{position:absolute;left:7px;top:.4rem;bottom:.4rem;width:2px;background:var(--line);overflow:hidden}
.proc__line i{display:block;width:100%;height:100%;background:var(--ink);transform-origin:top;transform:scaleY(var(--p,1))}
.proc__item{position:relative}
.proc__item::before{content:"";position:absolute;left:calc(-2.4rem + 1px);top:.3rem;width:14px;height:14px;border-radius:50%;background:var(--white);box-shadow:inset 0 0 0 2px var(--ink)}
.proc__n{display:block;color:var(--air-ink);margin-bottom:.6rem}
.proc__item h3{font-size:1.3rem;letter-spacing:-.025em;margin-bottom:.5rem}
.proc__item p{color:var(--mute)}
@media (min-width:980px){
  .proc__list{grid-template-columns:repeat(4,1fr);gap:2.5rem;padding:2.6rem 0 0}
  .proc__line{left:0;right:0;top:7px;bottom:auto;width:auto;height:2px}
  .proc__line i{transform-origin:left;transform:scaleX(var(--p,1))}
  .proc__item::before{left:0;top:-2.6rem}
}

/* почему мы */
.trust__list{list-style:none;margin:0;padding:0;display:grid;gap:2.4rem}
.trust__list li{border-top:2px solid var(--ink);padding-top:1.4rem}
.trust__list h3{font-size:1.35rem;letter-spacing:-.025em;margin-bottom:.6rem}
.trust__list p{color:var(--mute)}
@media (min-width:900px){.trust__list{grid-template-columns:repeat(3,1fr);gap:3rem}}

/* цены */
.prices{width:100%;border-collapse:collapse}
.prices th,.prices td{padding:1.25rem 0;border-bottom:1px solid var(--line);vertical-align:top;text-align:left}
.prices tr:first-child th,.prices tr:first-child td{border-top:1px solid var(--line)}
.prices th{font-size:1.12rem;font-weight:600;color:var(--ink);padding-right:1.5rem}
.prices th small{display:block;font-size:.9rem;font-weight:400;color:var(--mute);margin-top:.2rem}
.prices td{text-align:right;font-size:.95rem;color:var(--ink);white-space:nowrap}

.areas{list-style:none;margin:1.5rem 0 0;padding:0;display:flex;flex-wrap:wrap;gap:.5rem}
.areas li{display:inline-flex;align-items:center;gap:.45rem;padding:.55rem .9rem;border:1px solid var(--line);border-radius:999px;font-weight:500}
.areas .ic{color:var(--air-ink)}

/* вопросы */
.faq{border-top:1px solid var(--line)}
.faq__item{border-bottom:1px solid var(--line)}
.faq__item summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:1.5rem;padding-block:1.35rem;cursor:pointer}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary :is(h2,h3){font-size:1.14rem;font-weight:600;letter-spacing:-.02em;margin:0;line-height:inherit}
.faq__item summary:hover :is(h2,h3){color:var(--air-ink)}
.faq__pm{position:relative;flex-shrink:0;width:16px;height:16px}
.faq__pm::before,.faq__pm::after{content:"";position:absolute;left:0;right:0;top:50%;height:1.5px;margin-top:-.75px;background:var(--ink);transition:transform .45s var(--ease)}
.faq__pm::after{transform:rotate(90deg)}
.faq__item[open] .faq__pm::after{transform:rotate(0)}
.faq__a{overflow:hidden}
.faq__a p{color:var(--mute);max-width:46rem}
.faq__a>*:last-child{padding-bottom:1.4rem}

/* юр. текст */
.legal{max-width:780px}
.legal h2{font-size:1.4rem;letter-spacing:-.02em;margin:2.4rem 0 .8rem}
.legal__date{color:var(--mute)}
.legal ul{padding-left:1.2rem}
.legal li{margin-bottom:.4rem}
.legal a,.prose a,.faq__a a,.aside a{color:var(--air-ink)}

/* контакты */
.contact{margin:0;border-top:1px solid var(--line)}
.contact__row{display:grid;gap:.4rem;padding-block:1.4rem;border-bottom:1px solid var(--line)}
.contact__row dt{color:var(--mute)}
.contact__row dd{margin:0;font-size:1.1rem;color:var(--ink)}
.contact__big{font-size:clamp(1.6rem,3.6vw,2.6rem);font-weight:600;letter-spacing:-.035em;text-decoration:none;color:var(--ink)}
.contact__big:hover{color:var(--air-ink)}
@media (min-width:800px){.contact__row{grid-template-columns:220px 1fr;align-items:baseline}}

/* финальная заявка */
.final{position:relative;background:var(--ink);color:var(--on-d);padding-block:clamp(5rem,11vw,9rem);overflow:hidden}
.final__grid{display:grid;gap:3rem}
@media (min-width:1000px){.final__grid{grid-template-columns:6fr 5fr;gap:5rem;align-items:start}}
.final__title{font-size:clamp(2.2rem,4.6vw,4.25rem);line-height:1;letter-spacing:-.04em;color:var(--white)}
.final__lead{font-size:1.12rem;color:var(--on-d2);max-width:30rem;margin-top:1.6rem}
.final__phones{list-style:none;margin:2.4rem 0 0;padding:0;border-top:1px solid var(--line-d)}
.final__phones a{display:block;padding-block:.9rem;border-bottom:1px solid var(--line-d);font-size:clamp(1.5rem,3.2vw,2.3rem);font-weight:600;letter-spacing:-.03em;color:var(--white);text-decoration:none;transition:color .3s,padding .5s var(--ease)}
.final__phones a:hover{color:var(--air);padding-left:.5rem}
.final__hours{margin-top:1.4rem;color:var(--on-d3)}
.form{background:var(--white);color:var(--text);border-radius:var(--r);padding:clamp(1.4rem,3.5vw,2.4rem);--cta-bg:var(--ink);--cta-fg:var(--white);--cta-hover:#2a333b}
.form__title{font-size:1.4rem;letter-spacing:-.03em;margin-bottom:1.4rem}
.form__row{display:grid;gap:0 1rem}
@media (min-width:560px){.form__row{grid-template-columns:1fr 1fr}}
.fld{display:grid;gap:.4rem;margin-bottom:1rem}
.fld label{font-size:.88rem;font-weight:600;color:var(--ink)}
.fld small{font-weight:400;color:var(--mute)}
.fld input,.fld select,.fld textarea{width:100%;min-height:50px;font:inherit;font-size:16px;color:var(--ink);padding:.75rem .9rem;border:1px solid #cdd5db;border-radius:10px;background:#f7f9fa;transition:border-color .25s,box-shadow .25s,background-color .25s;appearance:none;-webkit-appearance:none}
.fld select{background-image:linear-gradient(45deg,transparent 50%,var(--mute) 50%),linear-gradient(135deg,var(--mute) 50%,transparent 50%);background-position:calc(100% - 20px) 55%,calc(100% - 14px) 55%;background-size:6px 6px;background-repeat:no-repeat;padding-right:2.4rem}
.fld textarea{min-height:104px;resize:vertical}
.fld input:hover,.fld select:hover,.fld textarea:hover{border-color:#aeb9c1}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:none;border-color:var(--ink);background:var(--white);box-shadow:0 0 0 4px rgba(37,169,224,.22)}
.fld [aria-invalid="true"]{border-color:var(--err);background:#fff6f5}
.fld__err{margin:0;font-size:.84rem;color:var(--err);min-height:0}
.fld__err:empty{display:none}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}
.form .btn{margin-top:.4rem}
.form.is-busy .btn{opacity:.75;pointer-events:none}
.form__note{font-size:.84rem;color:var(--mute);margin:1rem 0 0}
.form__note a{color:var(--air-ink)}
.form__status{margin:.8rem 0 0;font-weight:600}
.form__status:empty{display:none}
.form__status.is-err{color:var(--err)}
.form.is-sent>:not(.form__status){display:none}
.form.is-sent .form__status{display:grid;justify-items:start;gap:1rem;margin:0;padding-block:1.5rem;font-size:1.25rem;line-height:1.35;color:var(--ink)}
.form.is-sent .form__status .ic{width:44px;height:44px;padding:10px;border-radius:50%;background:#e2f3ea;color:var(--ok);stroke-width:2.4}

/* подвал */
.ftr{background:#07090b;color:var(--on-d3);padding:3.5rem 0 calc(6rem + env(safe-area-inset-bottom,0px));font-size:.95rem;border-top:1px solid var(--line-d)}
.ftr__grid{display:grid;gap:2.2rem}
@media (min-width:900px){.ftr{padding-bottom:2.4rem}.ftr__grid{grid-template-columns:1.4fr 1fr 1fr}}
.ftr__brand img{height:44px;width:auto;margin-bottom:1.1rem}
.ftr__brand p{max-width:24rem}
.ftr a{color:var(--on-d2);text-decoration:none;transition:color .2s}
.ftr a:hover{color:var(--white)}
.ftr__nav,.ftr__contact{display:grid;gap:.5rem;align-content:start}
.ftr__bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.8rem;margin-top:2.6rem;padding-top:1.3rem;border-top:1px solid var(--line-d)}
.ftr__lang a+a{margin-left:1rem}

/* нижняя панель на телефоне */
.dock{position:fixed;left:0;right:0;bottom:0;z-index:40;display:grid;grid-template-columns:1fr 1.4fr;gap:.6rem;padding:.6rem max(16px,env(safe-area-inset-right,0px)) calc(.6rem + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));background:rgba(11,14,17,.9);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-top:1px solid var(--line-d);transform:translateY(110%);transition:transform .5s var(--ease)}
.dock.is-on{transform:none}
@media (min-width:900px){.dock{display:none}}

/* пометки черновика (до подтверждения Артёма) */
mark.todo,mark.confirm{border-radius:3px;padding:0 .15em;color:inherit}
mark.todo{background:rgba(214,69,69,.16);outline:1px dashed #d64545}
mark.confirm{background:rgba(58,143,214,.14);outline:1px dashed #3a8fd6}

/* маски строк для заголовков */
.ln-mask{padding-bottom:.12em;margin-bottom:-.12em}

@media (prefers-reduced-motion:reduce){
  .schema .air{animation:none;stroke-dasharray:none}
  *,*::before,*::after{transition-duration:.01ms!important}
}

/* ---------- телефон: доводка (цели касания ≥ 44 px, читаемость, ритм) ---------- */
.hdr__logo{min-height:44px}
.link-u{min-height:44px}
.crumbs a{display:inline-flex;align-items:center;min-height:44px;margin-block:-.75rem;padding-inline:.35rem;margin-inline:-.35rem}
.contact__big{display:inline-block;padding-block:.35rem}
.ftr__nav,.ftr__contact{gap:0}
.ftr__nav a,.ftr__contact a{display:inline-flex;align-items:center;min-height:44px}
.ftr__lang a{display:inline-flex;align-items:center;justify-content:center;min-height:44px;min-width:44px}
.ftr__copy{text-transform:none;letter-spacing:.02em}
.mnav__lang a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px}
.mnav__phone,.hero__phone{min-height:44px}
.svc__title a{display:inline-block;padding-block:.5rem;margin-block:-.3rem}
@media (max-width:899px){
  .sec{padding-block:clamp(3.5rem,13vw,4.75rem)}
  .sec-head{margin-bottom:2rem}
  .split{gap:1.75rem}
  .split .sec-head{margin-bottom:0}
  .svc__row{gap:1.25rem;padding-block:2.25rem}
  .svc__fig{padding:1.1rem}
  .story__pin{padding-top:3.5rem}
  .story__ui{padding-block:1.25rem 3.5rem}
  .final{padding-block:4.25rem}
  .final__grid{gap:2.4rem}
  /* первый экран: труба фоном на весь экран, как на компьютере */
  .hero--home{min-height:100vh;min-height:100svh}
  .hero--home .hero__in{padding-top:calc(var(--hdr) + 2rem);padding-bottom:2rem}
  .hero__media{position:absolute;inset:0;margin:0}
  .hero__poster{position:absolute;inset:0;width:100%;height:100%;aspect-ratio:auto;object-fit:cover;object-position:50% 100%}
  .hero__media::after{background:linear-gradient(180deg,rgba(11,14,17,.6) 0%,rgba(11,14,17,.35) 45%,rgba(11,14,17,0) 62%)}
  /* картинка первого экрана видна сразу, не ждёт скриптов (быстрее показ на телефоне) */
  html.intro .hero__media{opacity:1}
  .hero--page .hero__in{padding-bottom:3rem}
  .ftr__nav{grid-template-columns:1fr 1fr;column-gap:1rem}
}
@media (max-width:599px){
  .mono{font-size:.8125rem}
  .eyebrow{font-size:.8125rem}
  .hero__eyebrow span{display:none}
  .hero__phone{font-size:.95rem}
  .fld label{font-size:.94rem}
  .fld small{font-size:.9em}
}
/* невысокий экран: меню помещается целиком */
@media (max-height:740px){
  .mnav__links a{font-size:1.55rem;padding:.35rem 0}
  .mnav__panel{gap:1.25rem}
}
/* телефон горизонтально */
@media (max-height:500px) and (orientation:landscape){
  .hero--home .hero__in{padding-top:calc(var(--hdr) + 1.25rem)}
  .hero__title{font-size:clamp(2rem,5.2vw,3rem)}
  .hero__title--page{font-size:clamp(1.9rem,4.6vw,2.8rem)}
  .mnav__links a{font-size:1.3rem;padding:.25rem 0}
}

/* ---------- непрерывный путь: один 3D-холст под первым экраном и историей ---------- */
.journey-gl{position:fixed;left:0;top:0;width:100%;height:100vh;height:100lvh;z-index:-1;opacity:0;pointer-events:none;transition:opacity 1s var(--ease)}
html.journey-on .journey-gl{opacity:1}
html.journey-on .hero--home{background:transparent}
html.journey-on .hero--home .hero__poster{opacity:0!important;transition:opacity 1.2s var(--ease)}
html.journey-on .story{background:transparent}
html.journey-on .story__poster{opacity:0;transition:opacity .8s var(--ease)}
html.journey .story__gl{display:none}
/* история держится на экране на любой ширине, пока камера чистит канал */
html.journey .story{height:360vh}
html.journey .story__pin{position:sticky;top:0;height:100vh;height:100svh;padding:0;overflow:hidden}
html.journey .story__stage{position:absolute;inset:0;aspect-ratio:auto}
html.journey .story__head{position:absolute;left:0;right:0;top:calc(var(--hdr) + 1.5rem);padding-bottom:0}
html.journey .story__ui{position:absolute;left:0;right:0;bottom:0}
@media (max-width:899px){
  html.journey .story__ui{padding-block:0 calc(5.6rem + env(safe-area-inset-bottom,0px))}
  html.journey .story__shade{background:radial-gradient(ellipse at 50% 45%,transparent 40%,rgba(0,0,0,.5) 100%),linear-gradient(180deg,rgba(6,8,10,.82) 0%,rgba(6,8,10,0) 30%,rgba(6,8,10,0) 52%,rgba(6,8,10,.9) 82%)}
  html.journey .story__cap b{font-size:1.5rem}
}
@media (min-width:900px){html.js.journey .story{height:400vh}}
/* стык первого экрана и истории без полос: затемнение истории — только когда она закреплена */
html.journey .story__shade{opacity:0;transition:opacity .6s var(--ease)}
html.journey .story.is-pinned .story__shade{opacity:1}
@media (min-width:900px){html.journey-on .hero--home .hero__media::after{background:linear-gradient(90deg,var(--ink) 0%,rgba(11,14,17,.86) 28%,rgba(11,14,17,0) 58%)}}
/* подписи и заголовок истории читаются на любом кадре (яркий металл у устья, свет на выходе) */
@media (min-width:900px){html.journey .story__shade{background:radial-gradient(ellipse at 50% 50%,transparent 45%,rgba(0,0,0,.55) 100%),linear-gradient(0deg,rgba(6,8,10,.94) 0%,rgba(6,8,10,.62) 20%,rgba(6,8,10,0) 44%),linear-gradient(180deg,rgba(6,8,10,.8) 0%,rgba(6,8,10,0) 30%)}}
@media (max-width:899px){html.journey .story__shade{background:radial-gradient(ellipse at 50% 45%,transparent 40%,rgba(0,0,0,.5) 100%),linear-gradient(180deg,rgba(6,8,10,.86) 0%,rgba(6,8,10,0) 28%,rgba(6,8,10,0) 48%,rgba(6,8,10,.72) 66%,rgba(6,8,10,.95) 84%)}}
.story__head{transition:opacity .4s var(--ease)}
html.journey .story__pin::after{content:"";position:absolute;left:0;right:0;bottom:0;height:48%;z-index:1;pointer-events:none;background:linear-gradient(0deg,rgba(6,8,10,.95) 0%,rgba(6,8,10,.72) 45%,rgba(6,8,10,0) 100%)}
html.journey .story__head,html.journey .story__ui{z-index:2}
html.journey .story__head h2,html.journey .story__cap b,html.journey .story__cap p{text-shadow:0 2px 18px rgba(0,0,0,.6)}
/* телефон: первый экран появляется сразу при отрисовке (CSS), без ожидания скриптов — быстрее и для людей, и для Google */
@keyframes heroIn{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
@media (max-width:899px){
  html.intro [data-intro]{opacity:1}
  .hero [data-intro]{animation:heroIn .9s var(--ease) both}
  .hero .hero__eyebrow,.hero .crumbs{animation-delay:.05s}
  .hero .hero__title{animation-delay:.12s}
  .hero .hero__lead{animation-delay:.22s}
  .hero .hero__cta{animation-delay:.32s}
  .hero .hero__phone{animation-delay:.4s}
  .hero .hero__media{animation:none}
}
@media (max-width:899px) and (prefers-reduced-motion:reduce){.hero [data-intro]{animation:none}}
/* финал истории: итог поверх чистой трубы снаружи */
.story__final{display:none}
html.journey .story__final{display:block;position:absolute;left:0;right:0;z-index:3;opacity:0;pointer-events:none;will-change:opacity,transform}
html.journey .story__final.is-on{pointer-events:auto}
.story__final-title{margin:0 0 1rem;font-size:clamp(2.2rem,4.6vw,4.25rem);font-weight:600;line-height:1.02;letter-spacing:-.04em;color:var(--white);text-shadow:0 4px 30px rgba(0,0,0,.45)}
.story__final-title span{display:block}
.story__final-title span+span{color:var(--air)}
.story__final-text{max-width:30rem;color:var(--on-d2);font-size:1.08rem;text-shadow:0 2px 14px rgba(0,0,0,.6)}
.story__final-cta{display:flex;flex-wrap:wrap;align-items:center;gap:1rem 1.6rem;margin-top:1.8rem}
@media (min-width:900px){html.journey .story__final{top:0;bottom:0;display:flex;flex-direction:column;justify-content:center}html.journey .story__final>*{max-width:34rem}}
@media (max-width:899px){html.journey .story__final{top:calc(var(--hdr) + 1.5rem)}.story__final-title{font-size:clamp(2rem,8.6vw,2.6rem)}}

/* Финал истории на телефоне: нижнее затемнение под подписями гасило трубу — на итоге оно плавно уходит */
@media (max-width:899px){html.journey .story__pin::after{transition:opacity .6s var(--ease)}
html.journey .story.is-final .story__pin::after{opacity:0}
html.journey .story.is-pinned.is-final .story__shade{opacity:0}}

/* Фото с объектов: пары «до / после» (сверху «до», снизу «после») */
.ph-grid{list-style:none;padding:0;margin:clamp(2rem,4vw,3rem) 0 0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(1.25rem,2.4vw,2rem)}
.ph{margin:0;display:grid;gap:.5rem}
.ph__cell{position:relative;aspect-ratio:3/2;border-radius:var(--r);overflow:hidden;background:var(--ink)}
.ph__img{display:block;width:100%;height:100%;object-fit:cover}
.ph__tag{position:absolute;top:12px;left:12px;padding:.3rem .65rem;border-radius:6px;background:rgba(11,14,17,.78);color:var(--white);font-size:.82rem;letter-spacing:.04em}
.ph__tag--after{background:var(--air-ink)}
.ph__cap{margin-top:.5rem;font-weight:500;color:var(--text);line-height:1.4}
@media (max-width:899px){.ph-grid{grid-template-columns:minmax(0,1fr);max-width:560px}}

/* Вложения к заявке */
.fld__label{font-size:.94rem;font-weight:600;color:var(--ink)}
.fld__label small{font-weight:400;color:var(--mute);font-size:.9em}
.files{position:relative;display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1rem}
.files__input{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden;clip-path:inset(50%)}
.files__btn{display:inline-flex;align-items:center;gap:.55rem;min-height:48px;padding:.7rem 1.1rem;border:1px dashed #aeb9c1;border-radius:10px;background:#f7f9fa;color:var(--ink);font-weight:600;font-size:.94rem;cursor:pointer;transition:border-color .25s,background-color .25s}
.files__btn .ic{width:20px;height:20px}
.files__btn:hover{border-color:var(--ink);background:var(--white)}
.files__input:focus-visible+.files__btn{outline:none;border-color:var(--ink);box-shadow:0 0 0 4px rgba(37,169,224,.22)}
.files__input[aria-invalid="true"]+.files__btn{border-color:var(--err);background:#fff6f5}
.files__picked{font-size:.9rem;color:var(--text)}
.files__clear{min-height:44px;padding:0 .4rem;border:0;background:none;color:var(--air-ink);font:inherit;font-size:.9rem;text-decoration:underline;cursor:pointer}
.files__clear[hidden]{display:none}
.fld__hint{margin:0;font-size:.84rem;color:var(--mute);line-height:1.45}