:root{
  --navy:#06192c; --navy-2:#0a2744; --blue:#1477ff; --cyan:#43d6ff;
  --ice:#ecf8ff; --cream:#fff8ed; --ink:#102236; --muted:#607085;
  --line:#dce7f0; --white:#fff; --green:#24b97b; --orange:#ff8a3d;
  --shadow:0 22px 60px rgba(4,30,58,.14); --radius:28px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit}
button,a{font:inherit}
.container{width:min(1180px,calc(100% - 40px));margin-inline:auto}
.narrow{width:min(820px,calc(100% - 40px))}
.skip-link{position:absolute;left:-9999px;top:10px;background:#fff;padding:10px;z-index:100}
.skip-link:focus{left:10px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(6,25,44,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,.12)}
.nav-wrap{height:76px;display:flex;align-items:center;gap:30px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:#fff;font-weight:900;letter-spacing:.04em;font-size:1.18rem}
.brand-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:11px;background:linear-gradient(145deg,var(--cyan),var(--blue));box-shadow:0 8px 24px rgba(20,119,255,.35)}
.main-nav{display:flex;gap:24px;margin-left:auto}
.main-nav a{color:#c7d7e6;text-decoration:none;font-size:.93rem;font-weight:650}
.main-nav a:hover{color:#fff}
.menu-toggle{display:none;margin-left:auto;border:1px solid rgba(255,255,255,.25);background:transparent;color:#fff;padding:8px 12px;border-radius:10px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:999px;padding:15px 23px;text-decoration:none;font-weight:800;transition:.25s transform,.25s box-shadow,.25s background}
.button:hover{transform:translateY(-2px)}
.button-small{padding:11px 17px;background:#fff;color:var(--navy);font-size:.88rem}
.button-primary{color:#fff;background:linear-gradient(135deg,var(--blue),#0754d9);box-shadow:0 16px 35px rgba(20,119,255,.32)}
.button-white{background:#fff;color:var(--navy);box-shadow:0 14px 34px rgba(0,0,0,.17)}
.hero{position:relative;overflow:hidden;background:linear-gradient(125deg,#f4fbff 0%,#e9f5ff 48%,#f8fbfd 100%);padding:82px 0 72px}
.hero:after{content:"";position:absolute;inset:auto 0 0;height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent)}
.hero-grid{position:relative;display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:45px;z-index:2}
.hero-glow{position:absolute;border-radius:50%;filter:blur(4px);opacity:.65}
.hero-glow-one{width:440px;height:440px;right:-120px;top:-180px;background:radial-gradient(circle,#69dfff 0%,transparent 68%)}
.hero-glow-two{width:400px;height:400px;left:-190px;bottom:-250px;background:radial-gradient(circle,#8baaff 0%,transparent 70%)}
.eyebrow{display:inline-flex;margin-bottom:15px;color:#0a67cf;background:#e0f2ff;border:1px solid #b9e2ff;border-radius:999px;padding:7px 12px;text-transform:uppercase;letter-spacing:.11em;font-size:.72rem;font-weight:900}
.eyebrow.light{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.22);color:#aee8ff}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(3rem,6vw,5.75rem);line-height:.95;letter-spacing:-.065em;margin-bottom:25px;max-width:760px}
h2{font-size:clamp(2.2rem,4.5vw,4rem);line-height:1.05;letter-spacing:-.045em;margin-bottom:18px}
h3{line-height:1.2}
.hero-lead{font-size:1.18rem;color:#40546a;max-width:650px}
.hero-actions{display:flex;align-items:center;gap:22px;margin:30px 0 22px;flex-wrap:wrap}
.text-link{font-weight:800;color:#0a5bc2;text-underline-offset:5px}
.trust-row{display:flex;flex-wrap:wrap;gap:16px 24px;list-style:none;padding:0;margin:0;color:#334c64;font-weight:700;font-size:.91rem}
.trust-row span{color:var(--green)}
.microcopy{margin-top:18px;color:#718096;font-size:.78rem;max-width:600px}
.hero-visual{position:relative;min-height:520px;display:grid;place-items:center}
.hero-visual img{position:relative;width:min(590px,100%);filter:drop-shadow(0 38px 35px rgba(8,35,61,.26));z-index:2}
.product-orbit{position:absolute;width:460px;height:460px;border-radius:50%;background:linear-gradient(145deg,#fff,#caedff);box-shadow:inset 0 0 0 1px rgba(25,113,180,.12),0 30px 80px rgba(18,102,174,.17)}
.hero-badge{position:absolute;z-index:3;background:rgba(255,255,255,.93);border:1px solid rgba(24,102,166,.15);box-shadow:var(--shadow);border-radius:18px;padding:13px 16px;display:flex;flex-direction:column;backdrop-filter:blur(12px)}
.hero-badge strong{font-size:1.35rem;line-height:1}
.hero-badge span{font-size:.75rem;color:#64768a;font-weight:700;margin-top:5px}
.badge-cooling{top:65px;left:4px}.badge-heating{right:4px;bottom:70px}
.fact-bar{background:var(--navy);color:#fff;padding:26px 0}
.fact-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.fact-grid article{display:flex;gap:13px;align-items:flex-start;padding:8px}
.fact-grid strong{display:block;font-size:.95rem}
.fact-grid small{display:block;color:#a9bfd4;line-height:1.4;margin-top:4px}
.fact-icon{flex:none;width:40px;height:40px;display:grid;place-items:center;border-radius:13px;font-weight:900}
.fact-icon.cold{background:#0c4f87;color:#6bd8ff}.fact-icon.heat{background:#7b3119;color:#ffad74}.fact-icon.quiet{background:#1b415f;color:#b7e3ff}.fact-icon.app{background:#163a74;color:#7ea8ff}
.section{padding:100px 0}
.section-heading{max-width:790px;margin-bottom:44px}
.section-heading.centered{text-align:center;margin-inline:auto;margin-bottom:48px}
.section-heading p{color:var(--muted);font-size:1.05rem}
.uses-section{background:#fff}
.use-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:20px}
.use-card{position:relative;border-radius:25px;overflow:hidden;min-height:330px;box-shadow:0 18px 45px rgba(5,34,61,.12)}
.use-card-photo{grid-column:span 4}
.use-card-photo img{width:100%;height:100%;object-fit:cover}
.use-card-photo:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 38%,rgba(3,17,31,.9))}
.use-overlay{position:absolute;inset:auto 25px 23px;color:#fff;z-index:2}
.use-overlay span,.gradient-card div>span{text-transform:uppercase;letter-spacing:.1em;font-size:.72rem;font-weight:900;opacity:.78}
.use-overlay h3{font-size:1.7rem;margin:5px 0}
.use-overlay p{margin:0;color:#d9e6f1}
.gradient-card{grid-column:span 2;display:flex;flex-direction:column;justify-content:space-between;padding:27px;color:#fff;background:linear-gradient(145deg,#07213b,#0b6fb7)}
.gradient-card.warm{background:linear-gradient(145deg,#7b2f14,#ef833b)}
.gradient-card h3{font-size:1.35rem;margin:6px 0 10px}.gradient-card p{color:rgba(255,255,255,.8);font-size:.92rem}.large-icon{font-size:2.4rem}
.feature-section{background:linear-gradient(180deg,#f5fbff,#fff)}
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.feature-visual{position:relative}
.image-panel{min-height:610px;display:grid;place-items:center;border-radius:var(--radius);background:radial-gradient(circle at 35% 30%,#bceaff,#edf8ff 55%,#d8e8f4);box-shadow:var(--shadow);overflow:hidden}
.image-panel img{width:83%;filter:drop-shadow(0 28px 32px rgba(4,31,55,.24))}
.mini-stat{position:absolute;right:-22px;bottom:35px;background:#fff;padding:20px 24px;border-radius:20px;box-shadow:var(--shadow);display:flex;flex-direction:column}
.mini-stat strong{font-size:1.65rem}.mini-stat span{font-size:.8rem;color:var(--muted)}
.feature-copy>p{color:var(--muted)}
.feature-list{display:grid;gap:6px;margin-top:30px}
.feature-list article{display:grid;grid-template-columns:48px 1fr;gap:15px;padding:18px 0;border-bottom:1px solid var(--line)}
.feature-list article:last-child{border-bottom:0}
.feature-list h3{margin-bottom:7px}.feature-list p{color:var(--muted);margin:0}
.number{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:#e7f4ff;color:#0870de;font-weight:900}
.specs-section{background:linear-gradient(135deg,var(--navy),#0b3558);color:#fff}
.specs-section .section-heading p{color:#b7c7d6}
.spec-layout{display:grid;grid-template-columns:.92fr 1.08fr;gap:28px}
.spec-cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.spec-cards article{padding:25px;border-radius:21px;background:rgba(255,255,255,.075);border:1px solid rgba(255,255,255,.13)}
.spec-cards small{display:block;color:#9db5c9}.spec-cards strong{display:block;font-size:2rem;margin:8px 0 2px}.spec-cards span{color:#7ecfff;font-size:.84rem}
.spec-table-wrap{border-radius:24px;overflow:hidden;background:#fff;color:var(--ink)}
table{width:100%;border-collapse:collapse}
th,td{text-align:left;padding:16px 20px;border-bottom:1px solid var(--line)}
th{width:46%;font-size:.9rem;color:#5e7082}td{font-weight:750}
tr:last-child th,tr:last-child td{border-bottom:0}
.gallery-section{background:#fff}
.gallery-grid{display:grid;grid-template-columns:1.45fr .78fr .78fr;gap:18px}
.gallery-grid figure{margin:0;border:1px solid var(--line);border-radius:24px;background:#f8fbfd;overflow:hidden}
.gallery-grid img{width:100%;height:330px;object-fit:contain;padding:18px}
.gallery-main img{height:430px}
.gallery-grid figcaption{padding:14px 18px;border-top:1px solid var(--line);font-size:.86rem;color:var(--muted);font-weight:700}
.considerations-section{background:linear-gradient(180deg,#f6fbff,#fff)}
.decision-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.decision-card{padding:32px;border-radius:25px;background:#fff;border:1px solid var(--line);box-shadow:0 16px 40px rgba(5,37,66,.08)}
.decision-card.positive{border-top:5px solid var(--green)}.decision-card.neutral{border-top:5px solid var(--orange)}
.decision-title{display:flex;align-items:center;gap:13px}.decision-title span{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;background:#ecfff7;color:#0b9660;font-weight:900}.neutral .decision-title span{background:#fff3ea;color:#d96218}
.decision-title h3{margin:0}
.decision-card ul{padding-left:22px;margin-bottom:0}.decision-card li{padding:6px 0;color:#53677b}
.faq-section{background:#fff}
.faq-list{display:grid;gap:12px}
details{border:1px solid var(--line);border-radius:18px;padding:0 20px;background:#fff;box-shadow:0 8px 24px rgba(7,34,59,.055)}
summary{cursor:pointer;list-style:none;padding:20px 36px 20px 0;font-weight:850;position:relative}
summary::-webkit-details-marker{display:none}
summary:after{content:"+";position:absolute;right:0;top:16px;font-size:1.5rem;color:#0871da}
details[open] summary:after{content:"–"}
details p{color:var(--muted);padding:0 30px 19px 0;margin:0}
.final-cta{position:relative;overflow:hidden;background:linear-gradient(125deg,#06203a,#0b63ab);color:#fff;padding:70px 0}
.final-cta:before{content:"";position:absolute;width:500px;height:500px;right:-180px;top:-220px;border-radius:50%;background:radial-gradient(circle,#43d6ff 0%,transparent 67%);opacity:.45}
.final-cta-grid{display:grid;grid-template-columns:1.2fr .8fr;align-items:center;gap:30px;position:relative}
.final-cta h2{max-width:730px}.final-cta p{color:#c4d8e8;max-width:700px}
.final-cta img{width:380px;justify-self:end;filter:drop-shadow(0 35px 30px rgba(0,0,0,.3))}
.site-footer{background:#041321;color:#c0d0dd;padding:60px 0 25px}
.footer-grid{display:grid;grid-template-columns:1fr .65fr 1.1fr;gap:50px}
.footer-brand{margin-bottom:16px}.footer-grid h3{color:#fff;font-size:1rem}.footer-grid a{display:block;text-decoration:none;margin:9px 0}.footer-grid a:hover{color:#fff}.footer-grid p{font-size:.9rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:22px;display:flex;justify-content:space-between;gap:20px;font-size:.78rem;color:#8095a8}
.mobile-offer{display:none}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.reveal{opacity:1;transform:none;transition:none}.button{transition:none}}
@media(max-width:980px){
 .main-nav{display:none;position:absolute;top:76px;left:20px;right:20px;background:#0a2946;border:1px solid rgba(255,255,255,.15);padding:18px;border-radius:18px;flex-direction:column}
 .main-nav.open{display:flex}.menu-toggle{display:block}.desktop-cta{display:none}
 .hero-grid,.split-grid,.spec-layout,.final-cta-grid{grid-template-columns:1fr}
 .hero{padding-top:55px}.hero-visual{min-height:430px}.hero-visual img{width:min(560px,95%)}.product-orbit{width:380px;height:380px}
 .fact-grid{grid-template-columns:1fr 1fr}.use-card-photo{grid-column:span 6}.gradient-card{grid-column:span 6;min-height:240px}
 .feature-visual{order:2}.image-panel{min-height:500px}.mini-stat{right:12px}
 .gallery-grid{grid-template-columns:1fr 1fr}.gallery-main{grid-column:span 2}
 .final-cta img{justify-self:center}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:last-child{grid-column:span 2}
}
@media(max-width:650px){
 body{padding-bottom:72px}.container,.narrow{width:min(100% - 26px,1180px)}
 .nav-wrap{height:66px}.main-nav{top:66px}.hero{padding:44px 0 40px}
 h1{font-size:3.05rem}.hero-lead{font-size:1.03rem}.hero-actions{align-items:stretch}.hero-actions .button{width:100%}.text-link{text-align:center}
 .trust-row{display:grid;gap:8px}.hero-visual{min-height:350px;margin-top:10px}.product-orbit{width:280px;height:280px}.hero-badge{padding:10px 12px}.badge-cooling{top:32px}.badge-heating{bottom:30px}
 .fact-grid,.spec-cards,.decision-grid,.gallery-grid,.footer-grid{grid-template-columns:1fr}
 .fact-grid article{border-bottom:1px solid rgba(255,255,255,.1);padding:13px 0}
 .section{padding:72px 0}.use-card-photo,.gradient-card{grid-column:span 12;min-height:320px}.gradient-card{min-height:250px}
 .image-panel{min-height:400px}.mini-stat{bottom:15px}
 .gallery-main{grid-column:auto}.gallery-grid img,.gallery-main img{height:310px}
 .footer-grid>div:last-child{grid-column:auto}.footer-bottom{flex-direction:column}
 .mobile-offer{display:block;position:fixed;left:0;right:0;bottom:0;padding:9px 13px;background:rgba(4,19,33,.96);z-index:60;backdrop-filter:blur(12px)}.mobile-offer .button{width:100%;padding:12px}
}


/* V2 purchase-intent modules */
.affiliate-note{max-width:650px;margin-top:18px;padding:12px 15px;border-left:4px solid var(--blue);border-radius:10px;background:rgba(255,255,255,.72);color:#52677c;font-size:.78rem}
.verdict-section{background:linear-gradient(180deg,#fff,#f5fbff)}
.verdict-grid{display:grid;grid-template-columns:1fr 1fr 1.05fr;gap:22px;align-items:stretch}
.verdict-card,.decision-summary{border-radius:25px;padding:30px;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px rgba(4,35,63,.09)}
.verdict-card.buy{border-top:5px solid var(--green)}.verdict-card.caution{border-top:5px solid var(--orange)}
.verdict-label,.setup-type{display:inline-flex;text-transform:uppercase;letter-spacing:.1em;font-size:.7rem;font-weight:900;color:#61758a;margin-bottom:10px}
.verdict-card h3,.decision-summary h3{font-size:1.45rem;margin-bottom:15px}
.verdict-card ul{margin:0;padding-left:21px}.verdict-card li{padding:6px 0;color:#53677b}
.decision-summary{color:#fff;background:linear-gradient(145deg,#061d34,#0b64aa);border:0;display:flex;flex-direction:column;justify-content:center}
.decision-summary p{color:#c2d7e8}.decision-summary .button{align-self:flex-start;margin-top:8px}
.setup-section{background:#fff}
.setup-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.setup-card{position:relative;padding:31px;border:1px solid var(--line);border-radius:25px;background:linear-gradient(180deg,#fff,#f8fbfd);box-shadow:0 18px 45px rgba(4,35,63,.08)}
.setup-card.featured{border:2px solid var(--blue);box-shadow:0 25px 60px rgba(20,119,255,.16);transform:translateY(-8px)}
.recommended{position:absolute;right:18px;top:18px;border-radius:999px;padding:6px 10px;background:#e4f3ff;color:#0868ce;font-size:.68rem;font-weight:900;text-transform:uppercase;letter-spacing:.08em}
.setup-icon{width:52px;height:52px;display:grid;place-items:center;border-radius:17px;background:linear-gradient(145deg,#e8f7ff,#c9eaff);font-size:1.55rem;margin-bottom:22px}
.setup-card h3{font-size:1.5rem;margin-bottom:12px}.setup-card p{color:var(--muted)}.setup-card ul{padding-left:20px;margin-bottom:0}.setup-card li{padding:5px 0;color:#53677b}
.setup-cta{margin-top:28px;padding:22px 25px;border-radius:22px;background:#eef8ff;display:flex;align-items:center;justify-content:space-between;gap:20px;border:1px solid #cde9fc}
.setup-cta div{display:flex;flex-direction:column}.setup-cta span{font-size:.86rem;color:var(--muted);margin-top:3px}
.intent-strip{padding:55px 0;background:linear-gradient(135deg,#0b5ea4,#082642);color:#fff}
.intent-strip-inner{display:flex;justify-content:space-between;align-items:center;gap:35px}.intent-strip h2{font-size:clamp(2rem,4vw,3.4rem);max-width:760px}.intent-strip p{color:#c3d8e8;max-width:780px;margin-bottom:0}.intent-strip .button{flex:none}
.sources-section{background:#f5f9fc;border-top:1px solid var(--line)}
.sources-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center}.sources-grid p{color:var(--muted)}
.source-links{display:grid;gap:12px}.source-links a{display:flex;justify-content:space-between;align-items:center;padding:18px 20px;border-radius:16px;background:#fff;border:1px solid var(--line);text-decoration:none;font-weight:800;box-shadow:0 10px 25px rgba(4,35,63,.05)}.source-links a:hover{border-color:#86c7f2;transform:translateY(-1px)}
@media(max-width:980px){.verdict-grid{grid-template-columns:1fr 1fr}.decision-summary{grid-column:span 2}.setup-grid{grid-template-columns:1fr}.setup-card.featured{transform:none}.sources-grid{grid-template-columns:1fr}.intent-strip-inner{align-items:flex-start;flex-direction:column}.intent-strip .button{align-self:flex-start}}
@media(max-width:650px){.verdict-grid{grid-template-columns:1fr}.decision-summary{grid-column:auto}.setup-cta{align-items:stretch;flex-direction:column}.setup-cta .button{width:100%}.intent-strip .button{width:100%}}