:root{--graphite:#1c1d1f;--basalt:#2a2c30;--lime:#ecebe7;--paper:#f6f5f2;--ember:#f26a1a;--f:"Roboto Flex",system-ui,-apple-system,"Segoe UI",sans-serif;--gut:clamp(16px,4vw,56px)}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--graphite);font-family:var(--f);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
.acc{color:var(--ember)}
.bwrap{max-width:1180px;margin:0 auto;padding:0 var(--gut)}
.bwrap.narrow{max-width:820px}
/* header */
.bh{position:sticky;top:12px;z-index:20;margin:12px var(--gut) 0;display:flex;align-items:center;gap:24px;height:58px;padding:0 8px 0 18px;border-radius:999px;background:rgba(28,29,31,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);color:var(--lime)}
.logo{display:flex;align-items:center;gap:11px;text-decoration:none}
.logo-mark{flex:none;display:block}
.logo-txt{display:flex;flex-direction:column;line-height:1;font-family:Manrope,var(--f)}
.logo-txt b{font-weight:700;font-size:18px;letter-spacing:.17em;color:var(--lime)}
.logo-txt small{margin-top:4px;font-weight:700;font-size:8.5px;letter-spacing:.31em;color:var(--ember)}
.bnav{display:flex;gap:24px;margin-left:auto}
.bnav a{text-decoration:none;font-size:15px;font-weight:500;opacity:.78}
.bnav a:hover,.bnav a[aria-current]{opacity:1;color:#fff}
.bnav a[aria-current]{box-shadow:inset 0 -2px 0 var(--ember)}
.blangs{display:flex;gap:2px;padding:3px;border:1px solid rgba(236,235,231,.18);border-radius:999px}
.blangs a{padding:6px 10px;border-radius:999px;font-size:12.5px;font-weight:700;text-decoration:none;opacity:.7}
.blangs a[aria-current]{background:var(--lime);color:var(--graphite);opacity:1}
.bbtn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:999px;background:var(--ember);color:#fff;font-weight:700;font-size:15px;text-decoration:none;white-space:nowrap}
.bbtn:hover{filter:brightness(1.08)}
.bbtn.line{background:transparent;border:1px solid rgba(236,235,231,.4);color:var(--lime)}
@media (max-width:980px){.bnav{display:none}.blangs{margin-left:auto}}
@media (max-width:560px){.hdr-tel{display:none}.bh{height:54px;padding-left:14px}.logo-txt small{font-size:7.5px}}
/* hero + list */
.bl-hero{padding:clamp(56px,9vw,110px) 0 clamp(28px,4vw,48px)}
.kick{display:flex;align-items:center;gap:12px;margin:0 0 14px;font-size:14px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:#4a4d52}
.kick::before{content:"";width:36px;height:2px;background:var(--ember);flex:none}
.bl-h1{margin:0;font-family:var(--f);font-weight:800;letter-spacing:-.02em;font-size:clamp(34px,5.4vw,68px);line-height:1.04;font-variation-settings:"wdth" 112}
.bl-lead{margin:18px 0 0;max-width:720px;font-size:clamp(17px,1.6vw,20px);color:rgba(28,29,31,.72)}
.bl-list{padding:0 0 clamp(64px,8vw,110px)}
.bl-list.rel{padding-top:clamp(48px,6vw,80px);background:var(--lime)}
.rel-h{margin:0 0 28px;font-size:clamp(26px,3vw,38px);font-weight:800;letter-spacing:-.02em}
.bt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:24px}
.bcard{display:flex;flex-direction:column;background:#fff;border-radius:24px;overflow:hidden;text-decoration:none;color:var(--graphite);transition:transform .35s,box-shadow .35s}
.bcard:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(28,29,31,.12)}
.bc-ph{display:block;aspect-ratio:16/10;overflow:hidden;background:#e4e2dd}
.bc-ph img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .6s}
.bcard:hover .bc-ph img{transform:scale(1.05)}
.bc-bd{display:flex;flex-direction:column;gap:8px;padding:22px 24px 26px;flex:1}
.bc-k{font-size:13px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--ember)}
.bc-h{font-size:21px;font-weight:800;line-height:1.25}
.bc-p{font-size:15.5px;line-height:1.55;color:rgba(28,29,31,.7)}
.bc-more{margin-top:auto;padding-top:8px;font-weight:700;font-size:15px}
/* article */
.post-hd{padding:clamp(40px,7vw,90px) 0 clamp(24px,3vw,36px)}
.crumbs{margin-bottom:22px;font-size:14px;color:rgba(28,29,31,.6)}
.crumbs a{text-decoration:none}.crumbs a:hover{color:var(--ember)}
.meta{margin:18px 0 0;font-size:14px;color:rgba(28,29,31,.55)}
.post-img{margin:0 auto clamp(32px,4vw,56px);max-width:1180px;padding:0 var(--gut)}
.post-img img{display:block;width:100%;aspect-ratio:16/8;object-fit:cover;border-radius:28px}
.post-body{padding-bottom:clamp(56px,7vw,96px);font-size:18px;line-height:1.72}
.post-body h2{margin:1.9em 0 .6em;font-size:clamp(25px,2.8vw,34px);line-height:1.18;font-weight:800;letter-spacing:-.015em}
.post-body h3{margin:1.5em 0 .4em;font-size:21px;line-height:1.3}
.post-body p{margin:0 0 1.1em}
.post-body ul,.post-body ol{margin:0 0 1.3em;padding-left:1.25em}
.post-body li{margin:.35em 0}
.post-body li::marker{color:var(--ember)}
.post-body strong{font-weight:700}
.post-body a{color:var(--ember);text-underline-offset:3px}
.post-body table{width:100%;border-collapse:collapse;margin:0 0 1.5em;font-size:16px;background:#fff;border-radius:16px;overflow:hidden}
.post-body th,.post-body td{padding:12px 14px;text-align:left;border-bottom:1px solid #ecebe7;vertical-align:top}
.post-body th{background:var(--graphite);color:var(--lime);font-weight:700}
.post-body .note{margin:1.6em 0;padding:20px 24px;border-radius:18px;background:#fff;border:1px solid rgba(242,106,26,.35)}
@media (max-width:600px){.post-body table{display:block;overflow-x:auto}}
/* cta + footer */
.bcta{background:var(--graphite);color:var(--lime);padding:clamp(56px,7vw,96px) 0}
.bcta h2{margin:0 0 10px;font-size:clamp(28px,3.6vw,46px);font-weight:800;letter-spacing:-.02em}
.bcta p{margin:0 0 26px;max-width:620px;color:rgba(236,235,231,.75)}
.bcta-b{display:flex;gap:12px;flex-wrap:wrap}
.bfoot{background:#141517;color:rgba(236,235,231,.6);font-size:14px;padding:22px 0}
.bfoot .bwrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.bfoot a{color:inherit}
/* product pages */
.pr-hero{padding:clamp(40px,7vw,90px) 0 clamp(28px,4vw,48px)}
.pr-grid{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:clamp(24px,4vw,64px);align-items:center}
.pr-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.bbtn.ghost{background:transparent;color:var(--graphite);border:1px solid rgba(28,29,31,.28)}
.pr-fig{margin:0;border-radius:28px;overflow:hidden;background:#f1efeb;aspect-ratio:4/3}
.pr-fig img{width:100%;height:100%;object-fit:cover;display:block}
.pr-specs{padding:0 0 clamp(32px,4vw,56px)}
.pr-dl{margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,200px),1fr));gap:1px;background:rgba(28,29,31,.1);border-radius:22px;overflow:hidden}
.pr-dl>div{background:#fff;padding:20px 22px}
.pr-dl dt{font-size:12.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ember)}
.pr-dl dd{margin:6px 0 0;font-size:19px;font-weight:800;line-height:1.25}
.pr-photo{margin:0 0 1.5em}
.pr-photo img{display:block;width:100%;border-radius:22px;aspect-ratio:16/9;object-fit:cover}
.pr-body{padding-bottom:clamp(32px,4vw,56px)}
.pr-faq{padding:0 0 clamp(56px,7vw,96px)}
.faq-q{border-bottom:1px solid rgba(28,29,31,.14)}
.faq-q:first-of-type{border-top:1px solid rgba(28,29,31,.14)}
.faq-q summary{list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;cursor:pointer;font-size:clamp(17px,1.5vw,20px);font-weight:700;line-height:1.3}
.faq-q summary::-webkit-details-marker{display:none}
.faq-q summary i{flex:none;width:34px;height:34px;border-radius:50%;background:#fff;position:relative}
.faq-q summary i::before,.faq-q summary i::after{content:"";position:absolute;left:50%;top:50%;width:14px;height:2px;margin:-1px 0 0 -7px;background:var(--ember);transition:transform .3s}
.faq-q summary i::after{transform:rotate(90deg)}
.faq-q[open] summary i{background:var(--ember)}
.faq-q[open] summary i::before,.faq-q[open] summary i::after{background:#fff}
.faq-q[open] summary i::after{transform:rotate(0)}
.faq-q p{margin:0 0 22px;font-size:17px;line-height:1.65;color:rgba(28,29,31,.78)}
.pr-others{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,230px),1fr));gap:20px}
.pr-card{display:flex;flex-direction:column;gap:6px;padding:0 0 20px;background:#fff;border-radius:22px;overflow:hidden;text-decoration:none;color:var(--graphite);transition:transform .35s,box-shadow .35s}
.pr-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(28,29,31,.12)}
.pr-card-ph{display:block;aspect-ratio:4/3;overflow:hidden;background:#f1efeb;margin-bottom:10px}
.pr-card-ph img{width:100%;height:100%;object-fit:cover;display:block}
.pr-card .bc-k,.pr-card-h{padding:0 20px}
.pr-card-h{font-size:18px;font-weight:800;line-height:1.25}
@media (max-width:800px){.pr-grid{grid-template-columns:1fr}.pr-fig{order:-1}}
.wa-ico{flex:none;margin-right:8px;color:#25D366}

/* thermostat catalog */
.pr-cat{padding:0 0 clamp(48px,6vw,80px)}
.pr-cat-p{margin:-14px 0 28px;max-width:720px;color:rgba(28,29,31,.7)}
.pr-cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,300px),1fr));gap:22px}
.pr-item{display:flex;flex-direction:column;background:#fff;border-radius:24px;overflow:hidden}
.pr-item-ph{aspect-ratio:4/3;background:#f4f3f1;display:flex;align-items:center;justify-content:center;padding:18px}
.pr-item-ph img{max-width:100%;max-height:100%;object-fit:contain}
.pr-item-bd{display:flex;flex-direction:column;gap:8px;padding:20px 22px 24px;flex:1}
.pr-item h3{margin:0;font-size:20px;line-height:1.25;font-weight:800}
.pr-item ul{margin:4px 0 8px;padding-left:1.1em;font-size:15.5px;line-height:1.5;color:rgba(28,29,31,.78)}
.pr-item li::marker{color:var(--ember)}
.pr-item-a{margin-top:auto;display:inline-flex;align-items:center;font-weight:700;font-size:15px;color:var(--graphite);text-decoration:none;border-bottom:2px solid var(--ember);align-self:flex-start;padding-bottom:3px}

.pr-item-ph{padding:0;background:none}
.pr-item-ph img{width:100%;height:100%;max-width:none;max-height:none;object-fit:cover}

/* Social icons in the footer */
.soc{display:flex;gap:10px;align-items:center}
.soc a{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:rgba(236,235,231,.08);color:rgba(236,235,231,.82);transition:background .2s,color .2s}
.soc a:hover,.soc a:focus-visible{background:#F26A1A;color:#1C1D1F}
.bfoot .bwrap{align-items:center}