@font-face{font-family:Roboto;src:url(fonts/Roboto-Regular.woff2) format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:Roboto;src:url(fonts/Roboto-Medium.woff2) format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:Roboto;src:url(fonts/Roboto-SemiBold.woff2) format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:Roboto;src:url(fonts/Roboto-Bold.woff2) format("woff2");font-weight:700;font-display:swap}

:root{
  --red:#E0362B;
  --red-2:#C42B21;
  --slate:#3C4852;
  --slate-2:#2F3942;
  --light:#F1F2F3;
  --white:#fff;
  --ink:#1C2228;
  --muted:#66707A;
  --line:rgba(28,34,40,.14);
  --line-l:rgba(255,255,255,.22);
  --r-sec:36px;
  --r:10px;
  --wrap:1240px;
  --pad:clamp(20px,4.5vw,64px);
  --top-h:72px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font:400 16px/1.55 Roboto,system-ui,sans-serif;color:var(--ink);background:var(--slate-2);overflow-x:hidden}
@supports(overflow:clip){body{overflow-x:clip}}
img{display:block;max-width:100%;height:auto}
a{color:inherit}
h1,h2,h3{margin:0;font-weight:500;letter-spacing:-.02em;line-height:1.08}
h2{font-size:clamp(30px,3.6vw,48px)}
h3{font-size:20px;letter-spacing:-.01em}
p{margin:0}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--pad)}

/* ---------- кнопки и метки ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 26px;border-radius:999px;border:1.5px solid transparent;font-weight:500;font-size:15px;text-decoration:none;white-space:nowrap;transition:background .2s,color .2s,border-color .2s,transform .2s;background:none}
.btn:active{transform:translateY(1px)}
.btn--sm{min-height:38px;padding:0 18px;font-size:14px}
.btn--red{background:var(--red);color:#fff}
.btn--red:hover{background:var(--red-2)}
.btn--white{background:#fff;color:var(--ink)}
.btn--white:hover{background:var(--light)}
.btn--glass{color:#fff;border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.08);backdrop-filter:blur(6px)}
.btn--glass:hover{background:rgba(255,255,255,.2)}
.btn--line{border-color:var(--line);color:var(--ink)}
.btn--line:hover{border-color:var(--ink)}
.btn--line-light{border-color:var(--line-l);color:#fff}
.btn--line-light:hover{border-color:#fff}

.tag{display:inline-block;padding:5px 9px 4px;border:1px solid currentColor;border-radius:3px;font-size:11px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;line-height:1.2;opacity:.85}
.tag--light{color:#fff}
.tag--red{color:var(--red);opacity:1}

/* ---------- шапка ---------- */
.top{position:fixed;z-index:50;top:14px;left:14px;right:14px;height:var(--top-h);display:flex;align-items:center;gap:24px;padding:0 14px 0 22px;background:#fff;border-radius:16px;box-shadow:0 10px 30px rgba(20,26,32,.12)}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--red);font-weight:700;font-size:20px;letter-spacing:.06em}
.logo svg{width:34px;height:34px}
.logo span{display:flex;flex-direction:column;line-height:1}
.logo small{font-size:10px;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-top:4px}
.logo--light{color:#fff}
.nav{display:flex;gap:28px;margin:0 auto}
.nav a{text-decoration:none;font-size:14px;color:var(--ink);opacity:.8}
.nav a:hover{opacity:1;color:var(--red)}
.top__right{display:flex;align-items:center;gap:16px}
.top__lang{font-size:13px;font-weight:600;text-decoration:none;color:var(--muted)}
.top__phone{font-weight:600;text-decoration:none;font-size:15px}
.burger{display:none;width:44px;height:44px;border:0;background:var(--light);border-radius:10px;position:relative}
.burger span{position:absolute;left:12px;right:12px;height:2px;background:var(--ink);transition:transform .2s}
.burger span:first-child{top:17px}.burger span:last-child{top:25px}
.burger[aria-expanded=true] span:first-child{transform:translateY(4px) rotate(45deg)}
.burger[aria-expanded=true] span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ---------- стопка секций ---------- */
main{position:relative}
.stack{position:sticky;top:var(--t,0px);border-radius:var(--r-sec) var(--r-sec) 0 0;margin-top:calc(var(--r-sec) * -1);box-shadow:0 -18px 40px rgba(16,22,28,.22)}
.stack--flow{position:relative;top:0}
.sec{padding:clamp(72px,9vw,120px) 0 clamp(96px,11vw,150px)}
.sec--red{background:var(--red);color:#fff}
.sec--slate{background:var(--slate);color:#fff}
.sec--light{background:var(--light)}
.sec--white{background:#fff}
.sec--red p,.sec--slate p{color:rgba(255,255,255,.82)}

.head2{display:grid;grid-template-columns:1fr 1fr;gap:28px 64px;align-items:end;margin-bottom:56px}
.head2 .tag{margin-bottom:18px}
.head2>p{max-width:520px;justify-self:end;font-size:15px}
.sec--light .head2>p,.sec--white .head2>p{color:var(--muted)}

/* ---------- фото-экраны: прозрачные «окна» в фиксированную стопку фото ---------- */
.bgstack{position:fixed;inset:0 0 auto;height:100vh;height:100lvh;z-index:0;background:var(--slate-2)}
.bgstack img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .9s ease}
.bgstack img.on{opacity:1}
main{z-index:1}
.grp{position:relative;margin-top:calc(var(--r-sec) * -1)}
.grp>.stack:first-child{margin-top:0}
.photo{position:relative;height:100vh;height:100svh;min-height:600px;color:#fff}
.photo::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(18,24,30,.45) 0%,rgba(18,24,30,.1) 35%,rgba(18,24,30,.72) 100%)}
.photo__in{position:relative;z-index:1;height:100%;max-width:var(--wrap);margin:0 auto;padding:calc(var(--top-h) + 60px) var(--pad) clamp(70px,9vh,110px)}

.hero{display:grid;grid-template-columns:1.25fr 1fr;grid-template-rows:auto 1fr auto;column-gap:56px;align-items:end}
.hero>.tag{grid-column:1/-1;align-self:start;justify-self:start}
.hero__title{grid-column:1;font-size:clamp(52px,8.4vw,124px);font-weight:500;letter-spacing:-.04em;line-height:.95}
.hero__side{grid-column:2;padding-bottom:10px;border-bottom:1px solid var(--line-l);padding-bottom:22px}
.hero__side p{font-size:17px;color:rgba(255,255,255,.88);margin-bottom:24px;max-width:440px}
.hero__btns{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:18px}
.hero__calc{font-size:14px;font-weight:500;text-decoration:none;border-bottom:1px solid rgba(255,255,255,.5);padding-bottom:2px}
.hero__calc:hover{border-color:#fff}
.hero__facts{grid-column:1/-1;list-style:none;margin:44px 0 0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.hero__facts li{border-top:1px solid var(--line-l);padding-top:14px;font-size:14px;color:rgba(255,255,255,.8)}
.hero__facts b{display:block;font-size:22px;font-weight:500;color:#fff;margin-bottom:2px}

.band{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;gap:18px}
.band h2{font-size:clamp(38px,5.4vw,76px);max-width:820px;letter-spacing:-.035em}
.band p{max-width:480px;font-size:17px;color:rgba(255,255,255,.88)}
.band .btn{margin-top:8px}

/* ---------- ситуации ---------- */
.sit{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line-l)}
.sit__item{text-align:left;background:none;border:0;border-bottom:1px solid var(--line-l);padding:28px 28px 30px 0;display:grid;grid-template-columns:44px 1fr;column-gap:16px;row-gap:6px;color:#fff;transition:background .2s}
.sit__item:nth-child(3n+2),.sit__item:nth-child(3n){padding-left:28px;border-left:1px solid var(--line-l)}
.sit__item svg{grid-row:1/3;width:36px;height:36px;fill:none;stroke:#fff;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.sit__item b{font-size:18px;font-weight:500}
.sit__item span{font-size:14px;color:rgba(255,255,255,.78)}
.sit__item:hover{background:rgba(255,255,255,.06)}
.sit__item:hover b{text-decoration:underline;text-underline-offset:4px}

/* ---------- системы ---------- */
.sys{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.sys__card{background:var(--slate-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.sys__card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.sys__body{padding:22px 20px 22px;display:flex;flex-direction:column;flex:1}
.sys__who{font-size:14px;margin:8px 0 14px}
.pm{list-style:none;margin:0 0 18px;padding:0;font-size:14px;color:rgba(255,255,255,.86)}
.pm li{position:relative;padding-left:20px;margin-bottom:6px}
.pm li::before{position:absolute;left:0;top:0;font-weight:700}
.pm .plus::before{content:"+";color:#7BD389}
.pm .minus::before{content:"–";color:#FF8A80}
.sys__nums{margin:auto 0 18px;display:grid;gap:8px;border-top:1px solid var(--line-l);padding-top:14px}
.sys__nums div{display:flex;justify-content:space-between;gap:10px;font-size:13px}
.sys__nums dt{color:rgba(255,255,255,.65)}
.sys__nums dd{margin:0;font-weight:600;font-size:15px;text-align:right}
.sys__card .btn--line{border-color:var(--line-l);color:#fff;width:100%}
.sys__card .btn--line:hover{background:var(--red);border-color:var(--red)}

/* ---------- радиаторы / пол ---------- */
.split{display:grid;grid-template-columns:.9fr 1.1fr;gap:clamp(32px,5vw,80px);align-items:center}
.split__img img{border-radius:var(--r);aspect-ratio:4/5;object-fit:cover;object-position:78% 50%;width:100%}
.split__text .tag{margin-bottom:18px}
.split__text h2{margin-bottom:18px}
.split__text>p{color:var(--muted);max-width:560px;margin-bottom:32px}
.opt{display:grid;gap:12px}
.opt__item{background:#fff;border-radius:var(--r);padding:20px 22px;border:1px solid var(--line)}
.opt__item p{color:var(--muted);font-size:15px;margin-top:6px}
.opt__item--hot{border-color:var(--red);box-shadow:inset 4px 0 0 var(--red)}
.opt__item .tag{margin-bottom:10px}
.scheme{display:grid;grid-template-columns:1fr 40px 1fr 40px 1fr;align-items:center;margin-top:72px}
.scheme__step img{border-radius:var(--r);aspect-ratio:3/2;object-fit:cover;width:100%;margin-bottom:14px}
.scheme__step b{display:block;font-weight:500;font-size:17px;margin-bottom:4px}
.scheme__step span{font-size:14px;color:var(--muted)}
.scheme__arrow{height:2px;background:var(--red);position:relative;margin:0 6px;align-self:start;top:calc(25% + 0px)}
.scheme__arrow::after{content:"";position:absolute;right:-1px;top:-4px;border:5px solid transparent;border-left:7px solid var(--red);border-right:0}

/* ---------- ошибки монтажа ---------- */
.mis{display:grid;grid-auto-flow:column;grid-auto-columns:calc((100% - 32px) / 3);gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:6px;scrollbar-width:none;outline-offset:6px}
.mis::-webkit-scrollbar{display:none}
.mis__card{scroll-snap-align:start;background:var(--light);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column;padding-bottom:22px}
.mis__pic{aspect-ratio:9/5;background:#E4E7EA;overflow:hidden}
.mis__pic img,.mis__pic svg{width:100%;height:100%;object-fit:cover;display:block}
.mis__n{margin:20px 22px 6px;font-size:13px;font-weight:600;color:var(--red)}
.mis__card h3{margin:0 22px 10px;font-size:21px}
.mis__risk{align-self:flex-start;margin:0 22px 14px;font-style:normal;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;background:var(--red);color:#fff;padding:5px 9px 4px;border-radius:3px}
.mis__card>p{margin:0 22px;font-size:15px;color:var(--muted)}
.mis__card .mis__ok{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);color:var(--ink)}
.mis__ok b{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--red);margin-bottom:4px;font-weight:600}
.mis__nav{display:flex;align-items:center;gap:10px;margin-top:24px}
.mis__btn{width:48px;height:48px;border-radius:50%;border:1.5px solid var(--line);background:#fff;font-size:18px;display:grid;place-items:center;transition:border-color .2s,background .2s}
.mis__btn:hover:not(:disabled){border-color:var(--ink)}
.mis__btn:disabled{opacity:.35;cursor:default}
.mis__nav .btn{margin-left:auto}
/* схемы в карточках */
.ill{background:#E9ECEE}
.ill-slab{fill:#B9C0C6}.ill-screed{fill:#D3D8DC}.ill-ins{fill:#F4F5F6;stroke:#C9CED3}.ill-tile{fill:var(--slate)}
.ill-pipe{fill:var(--red)}
.ill-pipe-s,.ill-pipe-l{fill:none;stroke:var(--red);stroke-width:5;stroke-linecap:round;stroke-linejoin:round}
.ill-crack{fill:none;stroke:var(--ink);stroke-width:2.5;stroke-linecap:round}
.ill-drop{fill:#4A90C8}
.ill-gauge{fill:#fff;stroke:var(--slate);stroke-width:6}
.ill-tick{stroke:var(--slate);stroke-width:3;stroke-linecap:round}
.ill-needle{stroke:var(--red);stroke-width:4;stroke-linecap:round}
.ill-hub{fill:var(--slate)}
.ill-door{fill:none;stroke:var(--slate);stroke-width:4}
.ill-dim{stroke:var(--ink);stroke-width:2}
.ill-cold{fill:#DCE6EE}.ill-warm{fill:#F6DCD6}.ill-room{fill:#F1F2F3;stroke:#C9CED3}
.ill-txt{font:500 13px Roboto,sans-serif;fill:var(--ink)}

/* ---------- калькулятор ---------- */
.calc{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(32px,5vw,72px);align-items:start}
.calc__intro{position:sticky;top:calc(var(--top-h) + 40px)}
.calc__intro .tag{margin-bottom:18px}
.calc__intro h2{margin-bottom:16px}
.calc__intro p{color:var(--muted);margin-bottom:26px}
.check{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.check li{position:relative;padding-left:28px;font-size:15px}
.check li::before{content:"";position:absolute;left:0;top:5px;width:16px;height:9px;border-left:2px solid var(--red);border-bottom:2px solid var(--red);transform:rotate(-45deg)}
.check--light li::before{border-color:#fff}
.calc__box{background:var(--light);border-radius:20px;padding:clamp(20px,3vw,36px);display:grid;gap:26px}
.q{border:0;margin:0;padding:0;min-width:0}
.q legend{display:flex;align-items:center;gap:10px;font-weight:500;font-size:17px;margin-bottom:14px;padding:0}
.q legend i{font-style:normal;display:inline-grid;place-items:center;width:26px;height:26px;border-radius:50%;background:var(--red);color:#fff;font-size:13px;font-weight:600}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips label{position:relative}
.chips input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.chips span{display:inline-flex;align-items:center;min-height:44px;padding:0 18px;border-radius:999px;background:#fff;border:1.5px solid var(--line);font-size:15px;transition:all .15s;cursor:pointer}
.chips input:hover+span{border-color:var(--ink)}
.chips input:checked+span{background:var(--ink);border-color:var(--ink);color:#fff}
.chips input:focus-visible+span{outline:2px solid var(--red);outline-offset:2px}
.area{display:flex;align-items:center;gap:18px}
.area input[type=range]{flex:1;appearance:none;-webkit-appearance:none;height:6px;border-radius:3px;background:linear-gradient(90deg,var(--red) var(--p,22%),#d5d8db var(--p,22%));outline-offset:6px}
.area input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;border-radius:50%;background:#fff;border:3px solid var(--red);box-shadow:0 2px 8px rgba(0,0,0,.18);cursor:grab}
.area input[type=range]::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:#fff;border:3px solid var(--red);cursor:grab}
.area__num{display:flex;align-items:center;gap:6px;background:#fff;border:1.5px solid var(--line);border-radius:10px;padding:0 12px;height:48px}
.area__num input{width:62px;border:0;font:600 20px Roboto,sans-serif;text-align:right;background:none;-moz-appearance:textfield;color:var(--ink)}
.area__num input::-webkit-inner-spin-button{-webkit-appearance:none}
.area__num input:focus{outline:none}
.area__num:focus-within{border-color:var(--ink)}
.area__scale{display:flex;justify-content:space-between;font-size:12px;color:var(--muted);margin-top:8px;padding-right:120px}
.q--opts{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px}
.q--opts legend{grid-column:1/-1;margin-bottom:4px}
.opt-check{display:flex;align-items:center;gap:10px;font-size:15px;cursor:pointer}
.opt-check input{width:20px;height:20px;accent-color:var(--red);margin:0;flex:none}
.opt-check[hidden]{display:none}
.res{background:var(--slate);color:#fff;border-radius:16px;padding:26px 26px 22px}
.res__label{font-size:12px;letter-spacing:.12em;text-transform:uppercase;opacity:.75}
.res__sum{font-size:clamp(30px,4vw,44px);font-weight:500;letter-spacing:-.02em;margin:6px 0 4px}
.res__note{font-size:14px;color:rgba(255,255,255,.75);min-height:1em}
.res__rows{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px;margin:20px 0;padding:18px 0;border-top:1px solid var(--line-l);border-bottom:1px solid var(--line-l)}
.res__rows dt{font-size:12px;color:rgba(255,255,255,.65)}
.res__rows dd{margin:2px 0 0;font-weight:600;font-size:16px}
.res__btns{display:flex;flex-wrap:wrap;gap:10px}
.res__small{font-size:13px;color:rgba(255,255,255,.65);margin-top:12px}

/* ---------- пакеты ---------- */
.packs{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.pack{border:1px solid var(--line-l);border-radius:var(--r);padding:30px 28px;display:flex;flex-direction:column;gap:14px}
.pack h3{font-size:24px}
.pack__price{font-size:32px;font-weight:500;color:#fff !important;letter-spacing:-.02em}
.pack__days{font-size:14px;margin-top:auto}
.pack--hot{background:var(--red);border-color:var(--red)}
.pack--hot .tag{align-self:flex-start}
.pack .btn{align-self:flex-start}

/* ---------- прайс ---------- */
.price{border-top:1px solid var(--line)}
.price__row{display:grid;grid-template-columns:1.1fr 1.6fr .7fr;gap:24px;padding:18px 0;border-bottom:1px solid var(--line);align-items:baseline}
.price__row b{font-weight:500;font-size:17px}
.price__row span{color:var(--muted);font-size:14px}
.price__row em{font-style:normal;font-weight:600;text-align:right;white-space:nowrap}
.price__note{font-size:13px;color:var(--muted);margin-top:18px}

/* ---------- сравнение ---------- */
.cmp-wrap{background:#fff;color:var(--ink);border-radius:16px;overflow-x:auto}
.cmp{width:100%;border-collapse:collapse;min-width:760px;font-size:15px}
.cmp th,.cmp td{padding:16px 18px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.cmp thead th{font-weight:600;font-size:15px;background:var(--light)}
.cmp tbody th{font-weight:500;color:var(--muted);width:20%}
.cmp tbody tr:last-child>*{border-bottom:0}
.cmp td[data-sys],.cmp td[data-run]{font-weight:600}
.advice{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:28px}
.advice p{border-top:1px solid var(--line-l);padding-top:14px;font-size:14px}
.advice b{display:block;color:#fff;font-weight:500;font-size:16px;margin-bottom:4px}

/* ---------- шаги на фото ---------- */
.photo--steps{height:auto;min-height:100vh;min-height:100svh}
.photo--steps::after{background:linear-gradient(180deg,rgba(18,24,30,.55),rgba(18,24,30,.8))}
.steps{height:auto;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:center;padding-top:clamp(80px,10vh,130px)}
.steps__head .tag{margin-bottom:16px}
.steps__head h2{font-size:clamp(34px,4.6vw,64px);margin-bottom:40px}
.steps__list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:12px;counter-reset:s}
.steps__list li{counter-increment:s;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-radius:var(--r);padding:20px 18px 22px}
.steps__list li::before{content:"0" counter(s);display:block;font-size:13px;font-weight:600;color:#fff;background:var(--red);border-radius:4px;width:max-content;padding:3px 7px;margin-bottom:16px}
.steps__list b{display:block;font-weight:500;font-size:18px;margin-bottom:6px}
.steps__list span{font-size:14px;color:rgba(255,255,255,.82)}
.steps__pay{margin-top:24px;font-size:15px;color:rgba(255,255,255,.9)}

/* ---------- работы ---------- */
.works{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.work{border-radius:var(--r);background:var(--light);overflow:hidden}
.work summary{list-style:none;cursor:pointer;position:relative}
.work summary::-webkit-details-marker{display:none}
.work img{aspect-ratio:16/9;object-fit:cover;width:100%;transition:transform .5s}
.work summary:hover img{transform:scale(1.03)}
.work__meta{display:grid;grid-template-columns:1fr auto;gap:2px 16px;padding:18px 22px 20px;background:var(--light);position:relative}
.work__meta b{font-weight:500;font-size:19px}
.work__meta span{grid-row:2;color:var(--muted);font-size:14px}
.work__meta em{grid-row:1/3;grid-column:2;align-self:center;font-style:normal;font-weight:600;font-size:18px;color:var(--red)}
.work__meta::after{content:"Смета ↓";position:absolute;right:22px;top:-40px;background:#fff;font-size:13px;font-weight:500;padding:6px 12px;border-radius:999px}
.work[open] .work__meta::after{content:"Свернуть ↑"}
.work__est{list-style:none;margin:0;padding:0 22px 20px;font-size:14px}
.work__est li{display:flex;justify-content:space-between;gap:16px;padding:10px 0;border-top:1px solid var(--line);color:var(--muted)}
.work__est b{color:var(--ink);font-weight:600;white-space:nowrap}

/* ---------- доверие ---------- */
.guar{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:40px}
.guar div{border-top:2px solid var(--red);padding-top:16px}
.guar b{display:block;font-size:24px;font-weight:500;margin-bottom:6px}
.guar span{font-size:14px;color:rgba(255,255,255,.75)}
.brands{display:flex;flex-wrap:wrap;gap:10px 34px;padding:22px 0;border-top:1px solid var(--line-l);border-bottom:1px solid var(--line-l);margin-bottom:40px;font-weight:600;font-size:18px;letter-spacing:.04em;color:rgba(255,255,255,.55)}
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.reviews blockquote{margin:0;background:var(--slate-2);border-radius:var(--r);padding:26px 24px;display:flex;flex-direction:column;gap:18px}
.reviews p{font-size:16px;color:#fff !important}
.reviews footer{margin-top:auto;font-size:13px;color:rgba(255,255,255,.6)}

/* ---------- вопросы ---------- */
.faq{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(32px,5vw,80px);align-items:start}
.faq__head{position:sticky;top:calc(var(--top-h) + 40px)}
.faq__head .tag{margin-bottom:18px}
.faq__head h2{margin-bottom:14px}
.faq__head p{color:var(--muted);margin-bottom:24px}
.faq__list details{border-bottom:1px solid var(--line)}
.faq__list details:first-child{border-top:1px solid var(--line)}
.faq__list summary{list-style:none;cursor:pointer;padding:20px 44px 20px 0;font-weight:500;font-size:17px;position:relative}
.faq__list summary::-webkit-details-marker{display:none}
.faq__list summary::after{content:"";position:absolute;right:6px;top:50%;width:12px;height:12px;border-right:2px solid var(--red);border-bottom:2px solid var(--red);transform:translateY(-70%) rotate(45deg);transition:transform .2s}
.faq__list details[open] summary::after{transform:translateY(-30%) rotate(-135deg)}
.faq__list p{padding:0 44px 22px 0;color:var(--muted)}

/* ---------- контакты и подвал ---------- */
#contacts{padding-bottom:clamp(80px,9vw,120px)}
.contacts{display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(32px,5vw,80px);align-items:end}
.contacts .tag{margin-bottom:18px}
.contacts h2{font-size:clamp(34px,4.6vw,60px);margin-bottom:16px}
.contacts p{max-width:520px;margin-bottom:28px}
.contacts__btns{display:flex;flex-wrap:wrap;gap:10px}
.contacts__info{margin:0;display:grid;gap:18px}
.contacts__info div{border-top:1px solid var(--line-l);padding-top:12px}
.contacts__info dt{font-size:12px;letter-spacing:.1em;text-transform:uppercase;opacity:.7}
.contacts__info dd{margin:4px 0 0}
.foot{background:var(--slate-2);color:rgba(255,255,255,.65);font-size:14px;position:relative;z-index:2}
.foot__in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding-top:28px;padding-bottom:28px}
.foot a{text-decoration:none}
.foot .logo{font-size:18px}
.foot .logo svg{width:28px;height:28px}

.mbar{display:none}

/* ---------- адаптив ---------- */
@media (max-width:1180px){
  .nav{gap:18px}
  .sys{grid-template-columns:1fr 1fr}
  .steps__list{grid-template-columns:repeat(3,1fr)}
  .advice{grid-template-columns:1fr 1fr}
}
@media (max-width:980px){
  :root{--top-h:62px;--r-sec:28px}
  /* на телефоне текст первого экрана выше экрана — растягиваем окно, чтобы красная секция не наезжала на факты */
  .photo{height:auto;min-height:100vh;min-height:100svh}
  .photo__in{height:auto;min-height:100vh;min-height:100svh;padding-bottom:calc(var(--r-sec) + 48px)}
  .top{top:10px;left:10px;right:10px;gap:12px;padding:0 10px 0 16px}
  .nav{position:fixed;top:calc(var(--top-h) + 18px);left:10px;right:10px;flex-direction:column;gap:0;background:#fff;border-radius:16px;padding:8px 20px;box-shadow:0 20px 40px rgba(0,0,0,.2);display:none}
  .nav.open{display:flex}
  .nav a{padding:14px 0;border-bottom:1px solid var(--line);font-size:17px}
  .nav a:last-child{border:0}
  .burger{display:block}
  .top__phone{display:none}
  .head2{grid-template-columns:1fr;gap:18px;margin-bottom:40px}
  .head2>p{justify-self:start}
  .hero{grid-template-columns:1fr;grid-template-rows:auto 1fr auto auto}
  .hero__side{grid-column:1;margin-top:28px}
  .hero__facts{grid-template-columns:1fr 1fr;margin-top:28px}
  .sit{grid-template-columns:1fr 1fr}
  .sit__item:nth-child(n){padding-left:0;border-left:0;padding-right:20px}
  .sit__item:nth-child(2n){padding-left:20px;border-left:1px solid var(--line-l)}
  .split,.calc,.faq,.contacts{grid-template-columns:1fr}
  .split__img img{aspect-ratio:16/10}
  .calc__intro,.faq__head{position:static}
  .scheme{grid-template-columns:1fr;gap:28px}
  .scheme__arrow{display:none}
  .packs,.reviews{grid-template-columns:1fr}
  .mis{grid-auto-columns:calc((100% - 16px) / 2)}
  .guar{grid-template-columns:1fr 1fr}
  .works{grid-template-columns:1fr}
  .price__row{grid-template-columns:1fr auto;gap:4px 16px}
  .price__row span{grid-row:2;grid-column:1}
  .price__row em{grid-row:1/3;grid-column:2;align-self:center}
}
@media (max-width:640px){
  body{padding-bottom:60px}
  .top__right .btn{display:none}
  .hero__title{font-size:clamp(46px,14vw,64px)}
  .hero__side p{font-size:16px}
  .hero__facts{gap:10px}
  .hero__facts b{font-size:18px}
  .sit{grid-template-columns:1fr}
  .sit__item:nth-child(n){padding:22px 0;border-left:0}
  .sys{grid-template-columns:1fr}
  .q--opts{grid-template-columns:1fr}
  .area__scale{padding-right:110px}
  .res__rows{grid-template-columns:1fr 1fr}
  .res__btns .btn{width:100%}
  .btn{white-space:normal;text-align:center;line-height:1.3;padding-top:10px;padding-bottom:10px}
  .calc>*,.split>*,.contacts>*,.faq>*{min-width:0}
  .steps__list{grid-template-columns:1fr}
  .mis{grid-auto-columns:86%}
  .mis__nav{flex-wrap:wrap}
  .mis__nav .btn{margin-left:0;flex:1 0 100%;white-space:normal;text-align:center}
  .advice,.guar{grid-template-columns:1fr}
  .mbar{display:grid;grid-template-columns:1fr 1fr 1fr;position:fixed;z-index:60;left:0;right:0;bottom:0;height:60px;background:var(--slate-2);border-top:1px solid rgba(255,255,255,.1)}
  .mbar a{display:grid;place-items:center;color:#fff;text-decoration:none;font-weight:500;font-size:15px}
  .mbar a:nth-child(2){background:var(--red)}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none !important}}

/* ---------- лёгкие анимации (класс js-anim ставит fx.js; при «уменьшить движение» его нет) ---------- */
.js-anim .hero__title .ln{display:block;overflow:hidden;padding:.14em 0 .06em}
.js-anim .hero__title .ln+.ln{margin-top:-.2em}
.js-anim .hero__title .ln>span{display:block;transform:translateY(135%);transition:transform 1.1s cubic-bezier(.2,.8,.2,1);transition-delay:calc(.2s + var(--i) * .14s)}
.js-anim .ready .hero__title .ln>span{transform:none}
.js-anim .hero>.tag,.js-anim .hero__side,.js-anim .hero__facts li{opacity:0;transform:translateY(16px);transition:opacity .8s ease,transform .8s cubic-bezier(.2,.8,.2,1)}
.js-anim .ready .hero>.tag,.js-anim .ready .hero__side,.js-anim .ready .hero__facts li{opacity:1;transform:none}
.js-anim .ready .hero__side{transition-delay:.55s}
.js-anim .ready .hero__facts li{transition-delay:.75s}
.js-anim .ready .hero__facts li:nth-child(2){transition-delay:.85s}
.js-anim .ready .hero__facts li:nth-child(3){transition-delay:.95s}
.js-anim .ready .hero__facts li:nth-child(4){transition-delay:1.05s}
.js-anim .rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .8s cubic-bezier(.2,.75,.2,1);transition-delay:var(--d,0s)}
.js-anim .rv.in{opacity:1;transform:none}

/* наведение */
.btn--red{box-shadow:0 0 0 rgba(224,54,43,0)}
.btn--red:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(224,54,43,.32)}
.sys__card,.mis__card,.pack,.work,.reviews blockquote,.opt__item{transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s}
.sys__card:hover,.mis__card:hover,.pack:hover,.reviews blockquote:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(16,22,28,.18)}
.sys__card img{transition:transform .8s cubic-bezier(.2,.8,.2,1)}
.sys__card{isolation:isolate}
.sys__card:hover img{transform:scale(1.05)}
.sit__item svg{transition:transform .35s cubic-bezier(.2,.8,.2,1)}
.sit__item:hover svg{transform:translateY(-3px) scale(1.08)}
.res__sum{transition:color .3s}
.res__sum.flash{color:#ff8a80}

/* ---------- лента «9 ошибок»: до края окна, счётчик и стрелки у заголовка ---------- */
#mistakes .mis{grid-auto-columns:var(--cw,calc((100% - 32px) / 3));padding-right:var(--pad);cursor:grab;-webkit-user-select:none;user-select:none}
#mistakes .mis.drag{cursor:grabbing;scroll-snap-type:none}
#mistakes .mis.drag .mis__card{pointer-events:none}
@keyframes nudge{0%,100%{transform:none}35%,60%{transform:translateX(-64px)}}
#mistakes .mis.nudge .mis__card{animation:nudge 1.3s cubic-bezier(.45,0,.2,1)}
#mistakes .mis__nav .btn{margin-left:0}
.head2 .misbar{grid-column:2;justify-self:end;display:flex;align-items:center;gap:14px}
.misbar__n{font-size:20px;font-weight:500;letter-spacing:.02em;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.misbar__n b{color:var(--ink);font-weight:600}
.misbar__line{width:110px;height:3px;border-radius:2px;background:var(--line);position:relative;overflow:hidden;margin-right:6px}
.misbar__line i{position:absolute;inset:0;background:var(--red);transform-origin:left;transform:scaleX(.33);transition:transform .35s cubic-bezier(.2,.8,.2,1)}
.misbar .mis__btn{width:56px;height:56px;border:1.5px solid var(--red);color:var(--red);font-size:20px}
.misbar .mis__btn:hover:not(:disabled){background:var(--red);color:#fff;border-color:var(--red)}
.misbar .mis__btn:disabled{border-color:var(--line);color:var(--muted);opacity:1}
@media (max-width:980px){.head2 .misbar{grid-column:1;justify-self:start}}
@media (max-width:640px){
  #mistakes .mis{grid-auto-columns:82%}
  .misbar__line{width:70px}
  .misbar .mis__btn{width:48px;height:48px}
}
@media (prefers-reduced-motion:reduce){#mistakes .mis.nudge .mis__card{animation:none}.btn--red:hover,.sys__card:hover,.mis__card:hover,.pack:hover,.reviews blockquote:hover{transform:none}}