/* Responsive layer — keeps the heating site usable from compact laptops to phones. */
img{max-width:100%;height:auto}body{overflow-x:hidden}.site-header nav{min-width:0}.home-hero,.detail-page{min-width:0}
@media(max-width:1100px){.site-header{padding-inline:4vw}.site-header nav{gap:18px}.site-header nav a,.site-header nav summary,.site-header .lang{font-size:.88rem}.detail-layout.has-switcher{grid-template-columns:160px minmax(0,1fr) 220px;gap:3vw}.detail-page{padding-inline:6vw}}
@media(max-width:780px){.site-header{height:72px;padding:0 16px;gap:16px;justify-content:flex-start;overflow-x:auto;-webkit-overflow-scrolling:touch}.site-header .brand-logo{width:128px;height:54px;flex:0 0 auto}.site-header nav{display:flex;gap:16px;flex:0 0 auto;white-space:nowrap}.site-header nav a,.site-header nav summary,.site-header .lang{font-size:.82rem}.site-header .lang{margin-left:auto;flex:0 0 auto}.nav-submenu{position:fixed;left:16px;right:16px;top:66px;max-height:calc(100vh - 84px);overflow:auto}.home-hero{min-height:600px}.hero-content{padding:96px 6vw 96px}.home-hero .hero-copy{font-size:1rem;max-width:min(92vw,560px)}.hero-actions{align-items:flex-start;flex-direction:column}.button,.button-secondary{min-height:46px}.section-block,.company-copy,.catalog-panel,.inquiry{padding-inline:6vw}.product-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}.detail-page{padding:62px 6vw 94px}.detail-page h1{font-size:clamp(2.45rem,11vw,4.1rem)}.detail-intro{font-size:1rem}.detail-layout.has-switcher,.detail-layout{grid-template-columns:1fr}.product-switcher{position:static;order:-1}.detail-aside{width:100%}.detail-visual{height:clamp(220px,56vw,360px)}footer{flex-wrap:wrap;align-items:flex-start}}
@media(max-width:480px){.site-header{gap:12px}.site-header .brand-logo{width:112px}.site-header nav{gap:13px}.site-header nav a,.site-header nav summary,.site-header .lang{font-size:.76rem}.home-hero{min-height:570px}.home-hero h1{font-size:clamp(2.55rem,12vw,3.5rem)}.hero-content{padding-top:78px}.product-matrix{grid-template-columns:1fr}.product-card-link{min-height:245px}.section-block{padding-block:58px}.company-image{min-height:270px}.workflow li{grid-template-columns:42px 1fr}.catalog-panel{padding-block:56px}.detail-page{padding-inline:20px}.detail-visual{margin-top:28px}.detail-aside{padding:20px}footer{padding:24px 20px}}