:root{--paper:#f7f8f2;--white:#fff;--ink:#203d33;--muted:#6d786f;--line:#dce2d8;--green:#173e32;--lime:#def09b;--soft:#edf0e5;--accent:#d5ddc3;--radius:7px;font-family:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
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span{display:block;color:var(--muted);font-size:10px;margin-bottom:8px}.efficiency-grid strong{font-size:18px;font-weight:500}.notice{background:#edf1e5;border-left:3px solid #a2b784;padding:23px 26px;margin-top:30px;font-size:13px}.notice p{color:var(--muted);margin:8px 0}.notice a{font-size:12px}.directory-search{display:flex;align-items:flex-end;gap:15px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:25px 0}.directory-search>div:first-child{flex:1.5}.directory-search>div:nth-child(2){flex:1}.directory-search>a{font-size:12px;padding:10px}.region-intro{display:grid;grid-template-columns:1fr 1fr;gap:50px;margin:10px 0 35px}.region-intro h2{font-size:26px}.region-intro p{font-size:14px;color:var(--muted)}.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:6px;background:white}.compare-table{border-collapse:collapse;width:100%;text-align:left;font-size:13px}.compare-table th,.compare-table td{padding:20px;border-bottom:1px solid var(--line);border-right:1px solid var(--line);min-width:190px;max-width:310px;vertical-align:top;overflow-wrap:anywhere}.compare-table thead{background:#e9eedf}.compare-table th{font-weight:500}.compare-table thead th{min-width:230px}.compare-table th:first-child{color:var(--muted);min-width:190px;width:205px;font-size:12px}.compare-table thead a{display:block;text-decoration:none;font-size:17px;line-height:1.4;margin:10px 0 12px}.compare-table thead .eyebrow{font-size:9px}.compare-table small{display:block;color:var(--muted);font-size:10px;margin-top:8px}.compare-table tbody tr:nth-child(even){background:#f8faf4}.article{max-width:800px;padding-top:40px;padding-bottom:80px}.article h1{font-size:clamp(36px,4.5vw,59px)}.article h2{font-size:27px;margin-top:40px}.article p{color:#677464;line-height:1.9}.article .lede{font-size:19px;line-height:1.7;margin-bottom:40px}.article-sources{border-top:1px solid var(--line);margin:40px 0 30px;padding-top:20px}.article-sources a{display:block;font-size:12px;margin-top:10px}.calculator{background:#e7eedb;border:1px solid #cedcbd;border-radius:7px;padding:28px;margin-top:35px}.calculator h2{margin-top:10px}.calculator .range{display:flex;gap:20px;margin-bottom:20px}.calculator .range>div{flex:1}.calculator output{display:block;font-size:25px;margin:22px 0;color:var(--green);font-variant-numeric:tabular-nums}.calculator p{margin:0}.request-layout{display:grid;grid-template-columns:1.5fr 1fr;gap:70px}.request-form{background:white;border:1px solid var(--line);border-radius:7px;padding:30px}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:24px}.request-form label span{color:#818c72}.request-form .consent{font-size:12px;font-weight:400;margin:20px 0;display:block}.request-form .consent input{margin-right:6px;vertical-align:middle}.request-form .button{min-width:220px}.request-aside h2{margin-top:15px}.request-aside ol{padding-left:20px;color:var(--muted);font-size:14px}.request-aside li{padding:8px 0 8px 8px}.request-aside .notice{padding:18px 20px}.form-errors{border:1px solid #d59780;background:#fcf1e9;color:#874735;border-radius:4px;padding:15px;margin-bottom:20px;font-size:13px}.form-errors p{margin:6px 0 0}.honeypot{position:absolute;left:-9999px}.success{max-width:760px;min-height:480px;padding-top:70px;padding-bottom:100px;text-align:center}.success .eyebrow{display:block}.success h1{font-size:50px}.success .lede{margin-inline:auto}.success p{color:var(--muted)}.success .row-actions{justify-content:center;margin-top:30px}.success-mark{display:grid;place-items:center;height:60px;width:60px;background:#e7efd6;color:#567532;border-radius:50%;font-size:25px;margin:0 auto 20px}.compare-dock{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);z-index:5;background:#183e32;color:white;border:1px solid #395a45;box-shadow:0 10px 50px #16332240;border-radius:7px;display:flex;gap:30px;align-items:center;padding:13px 16px 13px 22px;width:min(620px,calc(100% - 30px))}.compare-dock>div{flex:1;display:flex;flex-direction:column;font-size:13px}.compare-dock .muted{font-size:10px;color:#b6c7ad}.compare-dock .text-button{color:#cbd9bf}.toast{position:fixed;right:25px;top:25px;z-index:20;background:#e6eecf;border:1px solid #baca9b;border-radius:6px;max-width:min(410px,calc(100% - 30px));padding:16px 24px;box-shadow:0 5px 35px #0a301222;font-size:13px}footer{background:#edf0e6;border-top:1px solid var(--line);padding-bottom:90px}.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:30px;padding-top:44px;padding-bottom:40px}.footer-main .wordmark{font-size:21px}.footer-main .mark{height:29px;width:29px;font-size:23px}.footer-main p{font-size:11px;color:var(--muted);margin-top:14px}.footer-main b{font-size:11px;font-weight:600;display:block;margin-bottom:13px}.footer-main>div>a:not(.wordmark){display:block;text-decoration:none;font-size:11px;margin:8px 0;color:#63725a}.footer-bottom{border-top:1px solid var(--line);padding-top:18px;display:flex;justify-content:space-between;gap:30px;font-size:9px;color:var(--muted)}
@media(min-width:1500px){.hero{gap:110px}}
@media(max-width:1100px){.wrap{width:calc(100% - 48px)}.hero{gap:35px}.hero h1{font-size:58px}.nav nav{gap:20px}.catalog-layout{grid-template-columns:200px 1fr;gap:24px}.catalog-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.stats>div{padding:0 18px;gap:10px}.stats strong{font-size:26px}.stats{grid-template-columns:1fr 1fr 1fr 1.3fr}.supplier-card{padding:17px;gap:10px}.supplier-card .supplier-monogram{display:none}.newsletter{gap:25px;padding:30px}.detail-layout{gap:32px;grid-template-columns:minmax(0,1fr) 290px}.detail-stats strong{font-size:28px}}
@media(max-width:800px){.wrap{width:calc(100% - 36px)}.edition .wrap>span{display:none}.nav{height:auto;min-height:105px;flex-direction:column;align-items:flex-start;justify-content:center;gap:14px;padding-top:18px;padding-bottom:16px}.nav nav{width:100%;justify-content:space-between;gap:10px;font-size:12px}.shortlist-link{padding:5px 8px}.hero{grid-template-columns:1fr;gap:28px;padding-top:35px;padding-bottom:38px}.hero h1{font-size:64px}.hero-copy .lede br{display:none}.hero-copy .lede{max-width:480px}.hero-graphic{min-height:340px;max-width:none}.equipment{height:205px}.unit{height:168px;width:95px;padding:17px 13px}.unit.second{height:190px;width:107px}.vents{height:19px;margin-bottom:7px}.unit-screen{margin-bottom:11px}.graphic-bottom{margin-top:10px}.graphic-top{margin-bottom:8px}.stats{grid-template-columns:1fr 1fr}.stats>div{padding:10px 17px}.stats>div:nth-child(2){border:0}.stats>div:nth-child(3){padding-left:0}.stats strong{font-size:30px}.section{padding-top:40px;padding-bottom:38px}.section-heading{align-items:flex-start}.section-heading h2{font-size:26px}.section-heading .arrow-link{font-size:11px;padding-top:6px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.product-grid>.product-card:last-child:nth-child(3){grid-column:1/-1}.catalog-grid>.product-card:last-child:nth-child(3){grid-column:auto}.supplier-grid{grid-template-columns:1fr}.supplier-grid.two{grid-template-columns:1fr 1fr}.supplier-monogram{display:grid!important}.supplier-card h3{font-size:18px}.guide-grid{gap:20px}.guide-card h3{font-size:21px}.guide-card p{font-size:12px}.newsletter{grid-template-columns:1fr;gap:22px;margin-bottom:40px}.catalog-layout{grid-template-columns:180px 1fr;gap:18px}.catalog-grid{grid-template-columns:1fr}.results-bar{flex-wrap:wrap}.detail-layout{grid-template-columns:1fr}.detail-aside{max-width:none;display:block}.detail-aside .button{max-width:none}.request-layout{grid-template-columns:1fr;gap:35px}.footer-main{grid-template-columns:1fr 1fr}.footer-bottom{flex-direction:column;gap:10px}.directory-search{flex-wrap:wrap}.directory-search>div:first-child{min-width:50%}.region-intro{gap:25px}.compare-dock{gap:15px}.article{padding-top:25px}.efficiency-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){body{font-size:14px}.wrap{width:calc(100% - 32px)}.wordmark{font-size:24px}.hero h1{font-size:52px;letter-spacing:-2px}.hero .eyebrow{font-size:9px}.hero-links{font-size:9px;gap:11px}.hero-graphic{min-height:327px}.hero-copy .lede{font-size:16px}.stats{padding:12px 0}.stats>div{gap:12px}.stats strong{font-size:28px}.stat-note .status-dot{display:none}.stats span:not(.status-dot){font-size:10px}.stat-note p{font-size:10px}.section-heading{flex-direction:column;gap:12px}.product-grid,.supplier-grid.two{grid-template-columns:1fr}.product-grid>.product-card:last-child:nth-child(3){grid-column:auto}.product-card{padding:22px}.product-title{font-size:18px;min-height:26px}.capacity{font-size:40px}.source-pill{font-size:10px}.card-top .eyebrow{font-size:10px}.guide-grid{grid-template-columns:1fr;gap:10px}.guide-card h3{font-size:26px}.newsletter{padding:25px 20px}.newsletter h2{font-size:26px}.input-button{flex-direction:column}.newsletter .consent{display:block}.newsletter .consent input{vertical-align:middle;margin:0 5px 0 0}.page-head{padding-top:23px}.page-head h1{font-size:40px}.page-head .lede{font-size:15px}.catalog-layout{display:block}.filters{background:#ecf0e4;padding:18px;border-radius:6px;margin-bottom:22px}.filters form{display:grid;grid-template-columns:1fr 1fr;gap:12px}.filter-title{grid-column:1/-1;margin-bottom:4px}.filters label{margin:6px 0 -6px;grid-column:1/-1}.filters input,.filters select,.filters .range,.filters .tiny,.filters .button{grid-column:1/-1}.filters .range input{width:100%}.filters .button{margin-top:2px}.filters .tiny{margin:0}.filter-note{display:none}.catalog-grid{grid-template-columns:1fr}.catalog-grid .product-card{padding:22px}.catalog-grid .product-title{font-size:18px}.catalog-grid .source-pill,.catalog-grid .compare-check{font-size:11px}.detail-stats{gap:10px}.detail-stats strong{font-size:24px}.detail-stats small{font-size:12px}.detail-stats span{font-size:10px}.spec-table>div{font-size:12px;grid-template-columns:1fr 1.2fr}.detail-sub{gap:15px;flex-wrap:wrap}.directory-search{display:grid;grid-template-columns:1fr}.directory-search>div{min-width:0!important}.directory-search>a{justify-self:start}.row-actions{flex-wrap:wrap;gap:14px}.region-intro{grid-template-columns:1fr;gap:10px}.field-row{grid-template-columns:1fr;gap:20px}.request-form{padding:22px}.request-form .button{width:100%}.compare-dock{bottom:12px;padding:10px 12px;gap:12px}.compare-dock>div .muted{display:none}.compare-dock .button{padding:10px 12px;font-size:11px;min-height:40px}.compare-dock>div{font-size:12px}.compare-dock .text-button{font-size:11px}.footer-main{gap:25px 18px}.footer-main>div:first-child{grid-column:1/-1}.footer-main{padding-top:30px}.footer-bottom{font-size:9px}.article h1{font-size:40px}.article .lede{font-size:17px}.calculator{padding:20px}.calculator .range{gap:10px}.calculator output{font-size:21px}.success h1{font-size:39px}.success{padding-top:50px}.success .row-actions{flex-direction:column}.empty{padding:40px 20px}.empty h2{font-size:28px}.pagination{gap:15px}.pagination .button{font-size:11px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

.filter-toggle{display:none}@media(max-width:520px){.filter-toggle{display:flex;justify-content:space-between;align-items:center;width:100%;border:0;padding:0;background:transparent;font-weight:600;color:var(--green);font-size:13px}.filter-toggle[aria-expanded=true]{margin-bottom:18px}}
.search-status{font-size:12px;color:var(--muted);margin:0;min-height:0}.search-status:not(:empty){padding:10px 0}[aria-busy=true]>.product-grid,[aria-busy=true]>.supplier-grid{opacity:.55}.hero-search-wrap{position:relative}.home-suggestions{position:absolute;top:100%;left:0;right:0;z-index:6;margin-top:6px;padding:8px 16px;background:#fff;border:1px solid var(--line);border-radius:7px;box-shadow:0 10px 30px #173e3220;max-height:360px;overflow:auto}.home-suggestions ul{list-style:none;margin:0;padding:0}.home-suggestions li+li{border-top:1px solid var(--line)}.home-suggestions li a{display:block;padding:10px 4px;font-size:13px;text-decoration:none;overflow-wrap:anywhere}.home-suggestions li a:hover,.home-suggestions li a:focus-visible{background:#edf1e5}.home-suggestions small{display:block;font-size:11px;color:var(--muted);margin-top:3px}.home-suggestions .all-results{display:block;padding:12px 4px;font-size:12px;border-top:1px solid var(--line)}
.article-byline{font-size:12px;color:var(--muted);margin:18px 0}.article-toc{border:1px solid var(--line);border-radius:7px;background:#edf1e5;padding:22px 26px;margin:28px 0 38px;font-size:14px}.article-toc ol{padding-left:20px;columns:2;column-gap:30px}.article-toc li{break-inside:avoid;margin:8px 0}.guide-section{scroll-margin-top:20px}.article-checklist{padding-left:22px;color:#53634f}.article-checklist li{margin:12px 0;line-height:1.8}.article-table-scroll{overflow-x:auto;margin:25px 0;max-width:100%}.article-table{width:100%;border-collapse:collapse;text-align:left;font-size:13px;line-height:1.65}.article-table caption{text-align:left;font-weight:600;margin-bottom:10px}.article-table th,.article-table td{padding:13px 16px;border:1px solid var(--line);vertical-align:top;min-width:130px}.article-table th{background:#e7eedb;font-weight:600}.article-table tbody tr:nth-child(even){background:#f1f4eb}.long-guide .section-sources{font-size:11px;line-height:1.8;color:var(--muted);margin-top:14px}.context-links{list-style:none;padding:0;font-size:13px}.context-links li{margin:8px 0}.article-faq{border-bottom:1px solid var(--line);padding:18px 0}.article-faq summary{cursor:pointer;font-weight:600;line-height:1.6}.article-faq p{font-size:14px;margin-bottom:6px}.article-sources ol{padding-left:20px}.article-sources li{margin:15px 0}.article-sources li a{font-size:13px;overflow-wrap:anywhere}.article-sources li span{display:block;margin-top:4px}.related-reading{margin-top:38px}.related-reading ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.related-reading li{border-top:1px solid var(--line);padding-top:15px}.related-reading li>a{font-size:15px;font-weight:500}.related-reading li p{font-size:12px;color:var(--muted);margin:8px 0}.long-guide .related-reading ul{grid-template-columns:1fr}.long-guide .lede{margin-bottom:25px}.guide-grid .guide-card{min-width:0}.guide-grid{row-gap:40px}@media(max-width:520px){.article-toc{padding:18px}.article-toc ol{columns:1}.article-table th,.article-table td{padding:10px;min-width:120px}.related-reading ul{grid-template-columns:1fr}.long-guide h1{font-size:36px;overflow-wrap:anywhere}}

/* Tables keep the full model and source identifiers readable on small screens. */
.collection-table{max-width:100%;overflow-x:auto;margin:24px 0 40px;border:1px solid var(--line);border-radius:8px}
.collection-table table{width:100%;border-collapse:collapse;font-size:14px;min-width:780px}
.collection-table caption{text-align:left;padding:16px;color:#52605a;font-size:13px}
.collection-table th,.collection-table td{text-align:left;vertical-align:top;padding:14px;border-bottom:1px solid var(--line)}
.collection-table thead{background:#edf1ea}.collection-table tbody th{font-weight:500;max-width:360px;overflow-wrap:anywhere}
.collection-table tbody tr:last-child>*{border-bottom:0}.collection-table:focus-visible{outline:2px solid #173e32;outline-offset:3px}
@media(max-width:520px){.wordmark{font-size:22px;letter-spacing:-.8px}}
@media(max-width:380px){.wordmark sup{display:none}}
@media(max-width:900px){.nav{height:auto;flex-wrap:wrap;padding-top:18px;padding-bottom:16px}}
@media(max-width:520px){.nav nav{flex-wrap:wrap;justify-content:flex-start;gap:12px 16px}}