:root{--navy:#071a2e;--navy2:#0a2a4d;--blue:#0879e9;--blue2:#0d8cff;--red:#be4939;--ink:#172231;--muted:#637487;--line:#e4eaf1;--soft:#f6f8fb;--white:#fff;--shadow:0 18px 50px rgba(7,26,46,.10);--shadow2:0 8px 26px rgba(7,26,46,.08);--radius:18px;--shell:1360px}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.45;-webkit-font-smoothing:antialiased}body.modal-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}img{display:block;max-width:100%}svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.shell{width:min(var(--shell),calc(100% - 40px));margin:0 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@media(max-width:1120px){.nav{gap:16px}.nav a{font-size:12.5px}.brand img{width:190px;height:40px}.header__cta{display:none}.categories{grid-template-columns:repeat(3,1fr)}.advantages-grid{grid-template-columns:repeat(3,1fr)}.contact-grid{grid-template-columns:1fr 1.4fr}.quick-contact{grid-column:1/-1}.footer__grid{grid-template-columns:1.3fr repeat(2,1fr)}.footer__grid>div:nth-child(4){display:none}}
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@media(max-width:560px){.shell{width:min(100% - 22px,var(--shell))}.hero,.hero__inner{min-height:610px}.hero{background-position:62% center}.hero__shade{background:linear-gradient(90deg,rgba(5,18,32,.96),rgba(5,22,40,.73))}.hero__content{padding:45px 0}.hero__tag{font-size:10.5px}.hero h1{font-size:34px;line-height:1.08;letter-spacing:-.8px}.hero__city{font-size:20px}.hero__lead{font-size:13px;max-width:95%}.hero__benefits{gap:8px;margin-top:22px}.hero-benefit{padding:10px 9px;gap:8px}.hero-benefit__icon{width:34px;height:34px}.hero-benefit span,.hero-benefit b{font-size:10.5px}.hero__actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.hero__actions .primary-btn,.hero__actions .outline-btn{padding:0 10px;font-size:11px;min-height:44px}.section{padding:56px 0}.section-head{margin-bottom:25px}.section-head h2{font-size:25px}.categories{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;padding:2px 1px 10px;scrollbar-width:none}.categories::-webkit-scrollbar{display:none}.category-card{min-width:80%;scroll-snap-align:start}.category-card__image{height:185px}.service-card>img{height:195px}.services-grid{grid-template-columns:1fr}.advantages-grid{grid-template-columns:1fr 1fr;gap:9px}.adv-card{padding:17px 10px}.adv-card span{font-size:10.5px}.lead-card__form{padding:25px 18px}.lead-title h2{font-size:24px}.form-row{grid-template-columns:1fr}.form-bottom{align-items:stretch;flex-direction:column}.lead-card__photo{min-height:260px}.brand-row{display:flex;overflow-x:auto;gap:10px;scroll-snap-type:x mandatory;scrollbar-width:none}.brand-row::-webkit-scrollbar{display:none}.brand-row span{min-width:42%;scroll-snap-align:start;font-size:18px}.reviews-grid{display:flex;overflow-x:auto;gap:12px;scroll-snap-type:x mandatory;scrollbar-width:none}.reviews-grid::-webkit-scrollbar{display:none}.review-card{min-width:88%;scroll-snap-align:start}.contact-section{padding:48px 0 88px}.contact-info h2{font-size:25px}.contact-actions{display:grid;grid-template-columns:1fr 1fr}.contact-actions .primary-btn,.contact-actions .outline-btn{padding:0 10px;font-size:11px}.footer{padding-bottom:85px}.footer__grid{grid-template-columns:1fr 1fr;gap:24px}.footer__brand{grid-column:1/-1}.footer__grid>div:nth-child(4){display:block}.footer__contacts{grid-column:1/-1}.modal-grid{grid-template-columns:1fr 1fr;padding:16px}.modal-head{padding:18px 16px 12px}.modal-actions{padding:0 16px 18px}.reveal{transform:translateY(8px)}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.category-card,.service-card,.primary-btn,.outline-btn{transition:none}}

/* Calculator */
.calculator-section{background:#fff}.calculator-head-note{display:block;margin:12px auto 0;max-width:650px;color:var(--muted);font-size:12.5px;line-height:1.55}.calculator-card{display:grid;grid-template-columns:1.55fr .75fr;gap:22px;border:1px solid var(--line);border-radius:16px;padding:24px;background:linear-gradient(180deg,#fff,#fbfdff);box-shadow:0 15px 42px rgba(7,31,54,.07)}.calculator-form{display:grid;grid-template-columns:repeat(2,1fr);gap:19px}.calc-field{display:flex;flex-direction:column;gap:8px}.calc-field--wide{grid-column:1/-1}.calc-label{font-size:11.5px;font-weight:800;color:#2a3a4a}.calc-tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.calc-tab{border:1px solid #d7e2ee;border-radius:9px;background:#fff;color:#526374;min-height:42px;padding:0 10px;font-weight:750;font-size:11.5px;transition:.2s}.calc-tab:hover{border-color:#78b9f5;color:var(--blue)}.calc-tab.active{background:#eaf5ff;border-color:#8ac8ff;color:#0879e9;box-shadow:inset 0 0 0 1px rgba(8,121,233,.08)}.calc-field input[type=number],.calc-field select{width:100%;height:44px;border:1px solid #dbe4ed;border-radius:9px;background:#fff;padding:0 12px;color:#172231;outline:none}.calc-field input[type=number]:focus,.calc-field select:focus{border-color:#79bdf8;box-shadow:0 0 0 3px rgba(8,121,233,.08)}.calc-input-suffix{position:relative}.calc-input-suffix input{padding-right:48px!important}.calc-input-suffix>span{position:absolute;right:12px;top:50%;transform:translateY(-50%);color:#7b8c9c;font-size:11px}.calc-range{appearance:none;width:100%;height:4px;border-radius:9px;background:#dce8f4;outline:none;margin:7px 0 0}.calc-range::-webkit-slider-thumb{appearance:none;width:18px;height:18px;border-radius:50%;background:#0b83f4;border:3px solid #fff;box-shadow:0 2px 8px rgba(8,121,233,.35)}.calc-range::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:#0b83f4;border:3px solid #fff}.range-scale{display:flex;justify-content:space-between;color:#90a0af;font-size:9.5px}.calc-switch-row{grid-column:1/-1;display:flex;align-items:center;gap:14px;border:1px solid #e0e8f0;border-radius:11px;padding:14px 15px;background:#f9fbfd;cursor:pointer}.calc-switch-row>span:first-child{margin-right:auto}.calc-switch-row b{display:block;font-size:12.5px}.calc-switch-row small{display:block;margin-top:3px;color:#7d8d9c;font-size:10.5px}.calc-switch-row input{position:absolute;opacity:0;pointer-events:none}.calc-switch{position:relative;width:46px;height:26px;border-radius:99px;background:#cbd7e2;flex:0 0 auto;transition:.2s}.calc-switch:after{content:"";position:absolute;width:20px;height:20px;border-radius:50%;left:3px;top:3px;background:#fff;box-shadow:0 2px 6px rgba(7,24,41,.2);transition:.2s}.calc-switch-row input:checked+.calc-switch{background:#0b83f4}.calc-switch-row input:checked+.calc-switch:after{transform:translateX(20px)}.calculator-result{border-radius:13px;background:linear-gradient(145deg,#071d34,#0b3964);color:#fff;padding:24px;display:flex;flex-direction:column;justify-content:center;min-height:320px}.calculator-result__eyebrow{color:#74c5ff;text-transform:uppercase;font-size:10px;font-weight:900;letter-spacing:.08em}.calculator-result strong{display:block;margin:9px 0 7px;font-size:35px;letter-spacing:-1px}.calculator-result>p{margin:0;color:#bdd0e0;font-size:11.5px}.calculator-result ul{margin:20px 0 22px;padding-left:17px;color:#9fb3c5;font-size:10.5px;line-height:1.7}.calculator-result .primary-btn{width:100%}.consent a,.mini-consent a{color:#58b7ff;text-decoration:underline;text-underline-offset:2px}.footer__bottom a{color:#71879b;display:inline}.footer__bottom a:hover{color:#fff}
@media(max-width:820px){.calculator-card{grid-template-columns:1fr}.calculator-form{grid-template-columns:1fr 1fr}.calculator-result{min-height:0}.calc-tabs{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.calculator-card{padding:15px;gap:14px}.calculator-form{grid-template-columns:1fr;gap:15px}.calc-field--wide,.calc-switch-row{grid-column:auto}.calc-tabs{grid-template-columns:1fr 1fr}.calc-tab{font-size:10.5px}.calculator-result{padding:20px}.calculator-result strong{font-size:31px}}

/* Brand logos: responsive layout */
@media(max-width:980px){.brand-row{grid-template-columns:repeat(3,1fr)}.brand-logo-card{min-height:72px}.brand-logo-card img{max-width:145px;height:46px}}
@media(max-width:620px){.brand-row{grid-template-columns:repeat(2,1fr);gap:10px}.brand-logo-card{min-height:68px;padding:10px 12px}.brand-logo-card img{max-width:132px;height:42px}}


/* ===== Brand logos alignment fix ===== */
.brand-row{
  display:grid !important;
  grid-template-columns:repeat(6,minmax(0,1fr)) !important;
  gap:14px !important;
  overflow:visible !important;
  align-items:stretch;
}

.brand-logo-card{
  min-width:0 !important;
  min-height:82px !important;
  padding:16px 20px !important;
  display:flex !important;
  align-items:center !important;
  justify-content:center !important;
  background:#fff;
  border:1px solid #dfe7ef;
  border-radius:12px;
}

.brand-logo-card img{
  width:auto !important;
  max-width:132px !important;
  height:36px !important;
  object-fit:contain !important;
  object-position:center !important;
  flex:none !important;
}

/* Optical sizing: logos have different natural proportions */
.brand-logo-card:nth-child(1) img{max-width:108px !important;height:38px !important;} /* BAXI */
.brand-logo-card:nth-child(2) img{max-width:132px !important;height:34px !important;} /* Bosch */
.brand-logo-card:nth-child(3) img{max-width:132px !important;height:34px !important;} /* Ariston */
.brand-logo-card:nth-child(4) img{max-width:126px !important;height:34px !important;} /* Vaillant */
.brand-logo-card:nth-child(5) img{max-width:126px !important;height:34px !important;} /* Navien */
.brand-logo-card:nth-child(6) img{max-width:124px !important;height:34px !important;} /* STOUT */

@media(max-width:980px){
  .brand-row{
    grid-template-columns:repeat(3,minmax(0,1fr)) !important;
  }
}

@media(max-width:620px){
  .brand-row{
    display:grid !important;
    grid-template-columns:repeat(2,minmax(0,1fr)) !important;
    gap:10px !important;
    overflow:visible !important;
  }
  .brand-logo-card{
    min-width:0 !important;
    min-height:72px !important;
    padding:13px 12px !important;
  }
  .brand-logo-card img{
    max-width:118px !important;
    height:31px !important;
  }
  .brand-logo-card:nth-child(1) img{max-width:96px !important;height:33px !important;}
  .brand-logo-card:nth-child(2) img{max-width:118px !important;height:30px !important;}
  .brand-logo-card:nth-child(3) img{max-width:118px !important;height:30px !important;}
  .brand-logo-card:nth-child(4) img{max-width:112px !important;height:30px !important;}
  .brand-logo-card:nth-child(5) img{max-width:112px !important;height:30px !important;}
  .brand-logo-card:nth-child(6) img{max-width:110px !important;height:30px !important;}
}