[data-btu-calculator-section]{--btu-navy: #06183f;--btu-blue: #6183e0;--btu-blue-strong: #5884e7;--btu-blue-text: #5070c2;--btu-pale: #f5f7fb;--btu-line: #8491a3;--btu-muted: rgba(6, 24, 63, .6);--btu-soft-text: #667085;--btu-heading-font: var(--font-heading, "Spectral", Georgia, serif);--btu-body-font: var(--font-body, "Inter Tight", Inter, Arial, sans-serif);color:var(--btu-navy);font-family:var(--btu-body-font);font-size:16px;line-height:1.45;overflow:clip}[data-btu-calculator-section],[data-btu-calculator-section] *,[data-btu-calculator-section] *:before,[data-btu-calculator-section] *:after{box-sizing:border-box}[data-btu-calculator-section] [hidden]{display:none!important}[data-btu-calculator-section] h1,[data-btu-calculator-section] h2,[data-btu-calculator-section] h3,[data-btu-calculator-section] p,[data-btu-calculator-section] ul,[data-btu-calculator-section] ol,[data-btu-calculator-section] dl,[data-btu-calculator-section] dd,[data-btu-calculator-section] fieldset{margin:0}[data-btu-calculator-section] ul,[data-btu-calculator-section] ol{padding:0}[data-btu-calculator-section] button,[data-btu-calculator-section] input{color:inherit;font:inherit}[data-btu-calculator-section] button,[data-btu-calculator-section] a{-webkit-tap-highlight-color:transparent}[data-btu-calculator-section] img{display:block;max-width:100%}[data-btu-calculator-section] a{color:inherit;text-decoration:none}[data-btu-calculator-section] :focus-visible{outline:3px solid var(--btu-navy);outline-offset:4px}.btu-shell{margin-inline:auto;max-width:1720px;width:calc(100% - 200px)}.btu-eyebrow{color:var(--btu-blue-text);font-size:20.5px;font-weight:500;letter-spacing:0;line-height:1.53;text-transform:uppercase}.btu-hero{background-image:var(--btu-hero-image);background-position:right top -148px;background-repeat:no-repeat;background-size:144% auto;height:1004px;min-height:720px;position:relative}.btu-hero__content{left:max(5.2vw,54px);position:absolute;top:162px;width:620px}.btu-hero h1{font-family:var(--btu-heading-font);font-size:clamp(62px,4.01vw,77px);font-weight:500;letter-spacing:-1.28px;line-height:.99;margin-top:22px;max-width:590px}.btu-hero__copy{color:var(--btu-blue-text);font-size:20.5px;line-height:1.53;margin-top:15px!important;max-width:587px}.btu-hero__actions{display:flex;gap:19px;margin-top:39px}.btu-button{align-items:center;border:1.5px solid var(--btu-navy);border-radius:999px;display:inline-flex;font-size:15px;font-weight:600;height:44px;justify-content:center;min-width:210px;padding:0 29px;transition:background-color .16s ease,color .16s ease,transform .16s ease}.btu-button:hover{transform:translateY(-1px)}.btu-button--primary{background:var(--btu-blue);border-color:var(--btu-blue);color:#fff!important;gap:12px}.btu-button--primary img{filter:brightness(0) invert(1);transform:rotate(180deg)}.btu-button--secondary{background:#ffffffc2}.btu-hero__facts{align-items:center;bottom:-320px;display:flex;gap:22px;list-style:none;position:absolute;white-space:nowrap}.btu-hero__facts li{align-items:center;display:flex;font-size:16.5px;gap:6px;line-height:1.9}.btu-hero__facts img{filter:brightness(0) saturate(100%) invert(37%) sepia(28%) saturate(1432%) hue-rotate(184deg) brightness(94%);height:11px;object-fit:contain;transform:rotate(90deg);width:8px}.btu-process{background:#fff;height:741px;padding-top:89px}.btu-process__intro{text-align:center}.btu-process__intro h2,.btu-recommendations__intro h2{font-family:var(--btu-heading-font);font-size:68px;font-weight:500;letter-spacing:-1.28px;line-height:1.25;margin-top:17px}.btu-process__intro>p:last-child,.btu-recommendations__intro>p:last-child{color:var(--btu-blue-text);font-size:20.5px;line-height:1.53;margin-top:40px}.btu-process__divider{height:1px;margin-top:60px;object-fit:fill;width:100%}.btu-process__steps{display:grid;gap:0;grid-template-columns:repeat(4,minmax(0,279px));justify-content:space-between;list-style:none;padding:39px 86px 0!important}.btu-process__steps strong{color:var(--btu-blue-text);display:block;font-size:33px;font-weight:600;line-height:1}.btu-process__steps h3{font-family:var(--btu-body-font);font-size:25px;font-weight:600;line-height:1.26;margin-top:13px}.btu-process__steps p{color:var(--btu-muted);font-size:20.5px;line-height:1.53;margin-top:18px!important;max-width:285px}.btu-calculator-stage{align-items:center;background:var(--btu-pale);display:flex;min-height:1121px;padding:104px max(32px,7.29vw) 105px}.btu-wizard-card{background:#fff;border-radius:45px;box-shadow:0 10px 75px #00000038;margin:auto;max-width:1640px;overflow:hidden;width:100%}.btu-wizard{display:grid;grid-template-columns:minmax(0,1104px) 536px;min-height:912px}.btu-wizard__main{min-width:0;padding:60px 140px 145px 84px;position:relative}.btu-progress{color:var(--btu-blue-text);font-size:25px;line-height:1.26}.btu-progress__track{background:#d9d9d9;border-radius:20px;height:9px;margin-top:16px;overflow:hidden;width:100%}.btu-progress__track i{background:var(--btu-blue-strong);border-radius:inherit;display:block;height:100%;transition:width .26s ease}.btu-step,.btu-result{padding-top:20px}.btu-step>h2{font-family:var(--btu-heading-font);font-size:56px;font-weight:500;letter-spacing:-1.28px;line-height:1.523}.btu-step__lede{color:var(--btu-muted);font-size:20.5px;line-height:1.53;margin-top:0!important}.btu-fieldset{border:0;min-width:0;padding:0}.btu-step .btu-fieldset,.btu-step 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span{color:var(--btu-soft-text);font-size:16px;letter-spacing:.7px;line-height:1.25;margin-top:5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;width:100%}.btu-choice--single{align-items:flex-start;color:#000;font-size:22px;font-weight:500;height:74px}.btu-choice:hover,.btu-choice.is-selected{background:#eef3ff;border-color:var(--btu-blue)}.btu-choice.is-selected{box-shadow:inset 0 0 0 1px var(--btu-blue)}.btu-choice-grid.is-invalid{border-radius:36px;box-shadow:0 0 0 3px #b42318}.btu-number-control{align-items:center;border:2px solid var(--btu-line);border-radius:60px;display:flex;height:86px;max-width:493px;overflow:hidden;padding-right:25px}.btu-number-control input{-webkit-appearance:textfield;appearance:textfield;background:transparent;border:0;font-size:22px;font-weight:500;height:100%;min-width:0;outline:none;padding:0 26px;width:100%}.btu-number-control input::-webkit-inner-spin-button,.btu-number-control input::-webkit-outer-spin-button{opacity:1}.btu-number-control span{color:var(--btu-soft-text);flex:0 0 auto;font-size:18px;letter-spacing:1px}.btu-number-control--compact{max-width:420px}.btu-field-help{color:var(--btu-soft-text);display:block;font-size:13px;line-height:1.45;margin:8px 0 0 18px;max-width:520px}.btu-accuracy-panel{border:1px solid #d8deea;border-radius:24px;margin-top:24px;padding:0 22px}.btu-accuracy-panel[open]{padding-bottom:22px}.btu-accuracy-panel>summary{align-items:center;color:var(--btu-navy);cursor:pointer;display:flex;font-size:16px;font-weight:600;justify-content:space-between;list-style:none;min-height:58px}.btu-accuracy-panel>summary::-webkit-details-marker{display:none}.btu-accuracy-panel>summary:after{color:var(--btu-blue-text);content:"+";font-size:22px;font-weight:400;margin-left:14px}.btu-accuracy-panel[open]>summary:after{content:"\2212"}.btu-accuracy-panel>summary span{color:var(--btu-blue-text);font-size:12px;font-weight:600;letter-spacing:.35px;margin-left:auto}.btu-accuracy-panel>p{color:var(--btu-soft-text);font-size:14px;line-height:1.45}.btu-accuracy-panel .btu-fieldset{margin-top:18px}.btu-field--zip>input{background:transparent;border:2px solid var(--btu-line);border-radius:60px;font-size:21px;height:80px;max-width:493px;outline:none;padding:0 28px;width:100%}.btu-field--zip>input:focus,.btu-number-control:focus-within{border-color:var(--btu-blue);box-shadow:0 0 0 1px var(--btu-blue)}.btu-error{color:#b42318;display:block;font-size:15px;margin-top:8px}.btu-climate-status{color:var(--btu-blue-text);font-size:17px;margin-top:22px}.btu-climate-status:empty{display:none}.btu-wizard__nav{bottom:63px;display:flex;gap:22px;position:absolute;right:140px}.btu-nav-button{align-items:center;background:var(--btu-blue-strong);border:0;border-radius:50%;cursor:pointer;display:flex;height:40px;justify-content:center;padding:0;width:40px}.btu-nav-button img{filter:brightness(0) invert(1);height:15px;width:10px}.btu-nav-button--back img{transform:rotate(180deg)}.btu-nav-button:disabled{background:#aeb0b2;cursor:default}.btu-calculator-disclaimer{color:var(--btu-soft-text);display:block;font-size:11.5px;line-height:1.45;margin:42px 150px 0 0!important;max-width:760px}.btu-calculator-disclaimer a{color:var(--btu-blue-text);text-decoration:underline;text-underline-offset:2px}.btu-summary{background:var(--btu-navy);color:#fff;min-width:0;padding:126px 73px 70px}.btu-summary h2{color:#fff;font-family:var(--btu-heading-font);font-size:32px;font-weight:500;letter-spacing:-1.28px;line-height:1}.btu-summary dl{margin-top:48px}.btu-summary dl>div{border-bottom:1px solid rgba(255,255,255,.2);min-height:110px;padding:0 0 19px}.btu-summary dl>div:first-child{min-height:82px}.btu-summary dl>div+div{padding-top:20px}.btu-summary dt{color:var(--btu-soft-text);font-size:16px;letter-spacing:1px;line-height:1;text-transform:uppercase}.btu-summary dd{color:#fff;font-size:21px;font-weight:500;line-height:1.25;margin-top:21px;overflow-wrap:anywhere}[data-btu-step-panel="1"] .btu-fieldset:last-of-type legend{margin-bottom:7px}.btu-result{padding-top:59px;text-align:center}.r-cap{color:var(--btu-blue-text);font-size:20.5px;font-weight:500;line-height:1.53;text-transform:uppercase}.r-big{color:var(--btu-navy);font-family:var(--btu-heading-font);font-size:92px;font-weight:500;letter-spacing:-1.28px;line-height:.927;margin-top:37px!important}.r-big small{font-family:var(--btu-body-font);font-size:36px;font-weight:400;letter-spacing:0}.r-big-review{font-size:44px;line-height:1.08}.r-best{color:var(--btu-muted);font-size:20.5px;font-weight:500;line-height:1.53;margin-top:45px!important}.r-loads{color:var(--btu-soft-text);font-size:15px;line-height:1.45;margin-top:10px!important}.r-loads b{color:var(--btu-navy)}.r-governing-note{color:var(--btu-soft-text);font-size:13px;line-height:1.45;margin:9px auto 0!important;max-width:660px}.r-range{margin:35px auto 0;max-width:628px}.r-range__bar{display:grid;grid-template-columns:repeat(3,1fr);height:13px;position:relative}.r-range__bar i{background:#e6edf6;display:block}.r-range__bar i:first-child{border-radius:9px 0 0 9px}.r-range__bar i:nth-child(2){background:#b8cdfb}.r-range__bar i:nth-child(3){background:#e9dfcd;border-radius:0 9px 9px 0}.r-range__bar b{background:var(--btu-navy);height:38px;position:absolute;top:-13px;transform:translate(-50%);width:4px}.r-range__labels{color:#667085;display:flex;font-size:13px;justify-content:space-between;line-height:2.415;margin-top:18px}.r-factors{display:grid;gap:8px;grid-template-columns:repeat(3,minmax(0,1fr));margin:26px auto 0;max-width:804px}.r-factors>div{background:#f6f7fa;border-radius:50px;min-height:139px;padding:31px;text-align:left}.r-factors b,.r-factors span{display:block}.r-factors b{font-size:21px;font-weight:600;line-height:1.15}.r-factors span{color:#667085;font-size:16px;line-height:1.375;margin-top:4px}.r-cta{align-items:center;background:var(--btu-blue);border-radius:999px;color:#fff!important;display:inline-flex;font-size:21px;font-weight:500;height:65px;justify-content:center;margin-top:53px;min-width:359px;padding:0 28px}.r-details{color:var(--btu-soft-text);font-size:14px;margin:22px auto 0;max-width:720px;text-align:left}.r-details summary{color:var(--btu-blue-text);cursor:pointer;font-weight:600;margin:0 auto;width:max-content}.r-details ul{list-style:disc;margin-top:14px!important;padding-left:22px!important}.r-details li+li{margin-top:7px}.r-warning{color:var(--btu-muted);font-size:14px;margin:24px auto 0;max-width:620px}.r-analyzing{align-items:center;display:flex;flex-direction:column;justify-content:center;min-height:520px}.r-analyzing span{animation:btu-spin .8s linear infinite;border:4px solid #dbe4f9;border-radius:50%;border-top-color:var(--btu-blue);height:58px;width:58px}.r-analyzing p{font-family:var(--btu-heading-font);font-size:42px;margin-top:28px!important}.r-analyzing small{color:var(--btu-muted);font-size:16px;margin-top:8px}@keyframes btu-spin{to{transform:rotate(360deg)}}.btu-recommendations{background:#fff;min-height:1215px;padding:137px 0 73px}.btu-recommendations__intro{text-align:center}.btu-recommendations__intro h2{font-size:68px;margin-top:39px}.btu-recommendations__intro>p:last-child{margin-top:26px}.btu-products{display:grid;gap:30px;grid-template-columns:repeat(3,minmax(0,1fr));margin-top:67px;margin-inline:auto;max-width:1651px}.btu-product-card{border:2px solid var(--btu-line);border-radius:58px;min-height:726px;min-width:0;padding:38px 52px 45px}.btu-product-card__image{background:#f4f3ef;display:block;overflow:hidden;margin-inline:auto;max-width:424px;width:100%}.btu-product-card__image img{aspect-ratio:1;height:auto;object-fit:contain;width:100%}.btu-product-card__series{color:var(--btu-blue-text);font-size:17.5px;font-weight:500;line-height:1.794;margin-top:19px!important;text-transform:uppercase}.btu-product-card h3{font-family:var(--btu-body-font);font-size:23.5px;font-weight:600;line-height:1.336;margin-top:14px}.btu-product-card__meta{color:var(--btu-soft-text);font-size:17.5px;line-height:1.794;margin-top:14px!important}.btu-product-card__price{color:var(--btu-navy);font-size:33px;font-weight:600;line-height:.951;margin-top:28px!important}.btu-product-card__price s{color:var(--btu-soft-text);font-size:16px;font-weight:400;margin-left:10px}@media(max-width:1500px){.btu-shell{width:calc(100% - 112px)}.btu-hero__content{left:5.2vw}.btu-process__steps{padding-inline:30px!important}.btu-wizard{grid-template-columns:minmax(0,2.06fr) 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p{margin-top:8px!important;max-width:none}.btu-calculator-stage{padding:42px 16px}.btu-wizard-card{border-radius:26px;box-shadow:0 10px 45px #00000029}.btu-wizard__main{min-height:0;padding:34px 22px 150px}.btu-progress{font-size:18px}.btu-progress__track{height:7px}.btu-step{padding-top:24px}.btu-step>h2{font-size:36px}.btu-step__lede{font-size:15px}.btu-step .btu-fieldset,.btu-step .btu-field{margin-top:22px}.btu-choice-grid,.btu-choice-grid--rooms,.btu-choice-grid--three{gap:10px;grid-template-columns:1fr}.btu-accuracy-panel>summary{align-items:flex-start;flex-wrap:wrap;gap:4px 10px;padding-block:13px}.btu-accuracy-panel>summary span{margin-left:0;order:3;width:100%}.btu-accuracy-panel>summary:after{margin-left:auto}.btu-field-help{margin-left:0}.btu-choice{border-radius:28px;height:66px;padding:7px 20px}.btu-choice b{font-size:17px}.btu-choice 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