/* Aligned with accepted Home and Assessment typography, shell, and chapter styling. */

:root{--ink:#0b2026;--stone:#f3f0e7;--paper:#fbfaf6;--teal:#007a76;--slate:#536469;--line:#cad2cf;--lime:#c7f63b;--mono:'IBM Plex Mono',monospace;--display:'IBM Plex Sans Condensed','Arial Narrow',sans-serif;--body:'IBM Plex Sans',sans-serif;--max:1180px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--stone);color:var(--ink);font:400 1rem/1.6 var(--body);-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
img{display:block;max-width:100%;height:auto}
button{cursor:pointer}
[hidden]{display:none!important}
:focus-visible{outline:3px solid #d3ac64;outline-offset:3px}
section[id]{scroll-margin-top:110px}
.container{width:min(calc(100% - 48px),var(--max));margin-inline:auto}
.section{padding-block:clamp(92px,10vw,148px)}
.kicker{margin:0;color:#006f6b;font:600 .75rem/1.35 var(--mono);letter-spacing:.13em;text-transform:uppercase}
.kicker--light{color:#82d0c9}
h1,h2,h3,p,figure{margin:0}
h1,h2{font-family:var(--display);font-weight:700;letter-spacing:-.035em;line-height:.97;text-wrap:balance}
h2{font-size:clamp(3rem,4.7vw,4.8rem)}
h3{font-weight:500;font-size:1.3125rem;line-height:1.3;letter-spacing:-.015em}
.lede{color:var(--slate);font-size:clamp(1.02rem,1.45vw,1.2rem);line-height:1.66}
.text-link{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding-block:8px;border-bottom:1px solid currentColor;font-size:.8125rem;font-weight:700;letter-spacing:.045em}
.text-link .material-symbols-outlined{font-size:1.25rem}
.text-link:hover{color:var(--teal)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:16px;min-height:56px;padding:0 25px;border:1px solid transparent;background:var(--lime);color:var(--ink);font-weight:700;font-size:.8125rem;letter-spacing:.07em;text-transform:uppercase}
.button:hover{background:#d5fa63}
.button--lime{background:var(--lime);color:var(--ink)}
.button--lime:hover{background:#d5fa63}
.skip-link{position:fixed;z-index:100;top:12px;left:12px;padding:12px 18px;background:white;transform:translateY(-160%)}
.skip-link:focus{transform:none}
.site-header{position:sticky;top:0;z-index:50;height:84px;background:rgba(243,240,231,.94);backdrop-filter:blur(16px);border-bottom:1px solid rgba(11,32,38,.14)}
.nav-shell{display:flex;align-items:center;gap:clamp(28px,4vw,58px);height:100%}
.brand{display:flex;align-items:center;gap:9px;flex:none}
.brand__mark{width:34px;height:34px}
.brand__wordmark{width:clamp(100px,9.2vw,112px);height:auto;flex:none}
.main-nav{display:flex;align-items:center;gap:clamp(20px,2.4vw,34px);margin-left:auto}
.main-nav a{position:relative;display:inline-flex;align-items:center;min-height:84px;font-size:.78rem;color:#526166;font-weight:700;letter-spacing:.035em;white-space:nowrap}
.main-nav a:after{content:"";position:absolute;left:0;right:100%;bottom:-1px;height:2px;background:var(--teal);transition:right .22s ease}.main-nav a:hover{color:var(--ink)}.main-nav a:hover:after{right:0}.main-nav .nav-mobile-cta:after{content:none}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-cta{min-height:44px;padding-inline:17px;white-space:nowrap;background:var(--teal);color:#fff;font-size:1rem;font-weight:700;letter-spacing:normal;text-transform:none}.nav-cta:hover{background:#006f6b}
.nav-mobile-cta{display:none!important}
.nav-toggle{display:none;width:43px;height:43px;border:1px solid var(--line);background:#fff}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);margin:4px auto}
.breadcrumb{display:flex;gap:12px;flex-wrap:wrap;padding-block:25px;color:var(--slate);font-size:.8125rem}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb [aria-current]{color:var(--ink)}
.modernization-hero{overflow:hidden;padding:clamp(44px,5vw,76px) 0 0}
.hero-layout{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(48px,6vw,92px);align-items:center;padding-bottom:clamp(64px,8vw,112px)}
.hero-copy{position:relative;z-index:1}
.hero-copy h1{margin-top:22px;font-size:clamp(3.7rem,5.8vw,5.8rem);line-height:.91;letter-spacing:-.05em}
.hero-copy h1 span{display:block;color:var(--teal)}
.hero-copy .lede{max-width:510px;margin-top:27px}
.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-top:30px}
.hero-actions .text-link{font-size:.8125rem}
.hero-product{position:relative;display:flex;flex-direction:column;justify-content:center;min-width:0;min-height:520px;padding:28px;color:var(--ink)}
.hero-product__heading{display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--slate);font:600 .75rem/1.35 var(--mono);text-transform:uppercase;letter-spacing:.1em}
.hero-product__index{color:var(--teal)}
.hero-product__image{display:flex;align-items:center;justify-content:center;position:relative;flex:1;min-height:350px;border-bottom:1px solid var(--line)}

.hero-product__image img{position:relative;width:112%;max-width:112%;height:auto}
.hero-product figcaption{display:flex;justify-content:space-between;gap:20px;padding-top:21px;font-size:.8125rem;color:var(--slate)}
.hero-product figcaption strong{display:block;color:var(--ink);font-weight:600}
.hero-product__note{max-width:210px;text-align:right}
.outcome-rail{border-top:1px solid var(--line);display:grid;grid-template-columns:repeat(3,1fr);margin-block:0;padding:0;list-style:none}
.outcome-rail li{display:flex;align-items:baseline;gap:16px;min-width:0;padding:25px 26px;border-left:1px solid var(--line)}
.outcome-rail li:first-child{padding-left:0;border-left:0}
.outcome-rail li:last-child{padding-right:0}
.outcome-rail span{color:var(--teal);font:500 .75rem var(--mono)}
.outcome-rail strong{font-size:.9375rem;font-weight:500}
.how{background:var(--ink);color:#fff}
.section-intro{display:grid;grid-template-columns:1.06fr .94fr;gap:clamp(32px,7vw,105px);align-items:end}
.section-intro h2{margin-top:18px}
.section-intro>.lede{padding-bottom:4px}
.how .lede{color:#c7d3d1}
.comparison{margin-top:46px;border:1px solid #476065}
.comparison-switch{display:flex;flex-wrap:wrap;gap:10px 28px;align-items:center;margin:0;padding:22px 30px;border:0;border-bottom:1px solid #476065;background:#17343b}
.comparison-switch legend{float:left;margin-right:32px;padding:0;color:#b9c9c8;font-size:.8125rem}
.comparison-switch label{position:relative;display:flex;align-items:center;gap:10px;min-height:44px;cursor:pointer;font-size:.9375rem;color:#c7d3d1}
.comparison-switch input{width:18px;height:18px;margin:0;accent-color:var(--lime);flex:none}
.comparison-switch label:has(input:checked){color:var(--lime)}
.scenario{padding:34px 38px 30px}
.scenario--conventional{display:none}
.comparison:has(#system-conventional:checked) .scenario--conventional{display:block}
.comparison:has(#system-conventional:checked) .scenario--modern{display:none}
.scenario-top{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-bottom:29px;font-size:.875rem;color:#b9c9c8}
.loop-label{display:flex;align-items:center;gap:10px;color:#b4e9e4}
.loop-label:before{content:'';width:9px;height:9px;background:#7bd8cd;border-radius:50%;flex:none}
.room-grid{display:grid;grid-template-columns:1fr 1fr;gap:38px;border-top:2px solid #7bd8cd;padding-top:27px}
.room{position:relative;display:grid;grid-template-columns:1fr auto;gap:16px 20px;padding:25px 27px;background:#17343b;border:1px solid #476065}
.room:before{content:'';position:absolute;top:-29px;left:50%;height:28px;width:2px;background:#7bd8cd}
.room-name{color:#b9c9c8;font:500 .8125rem var(--mono)}
.room-demand{grid-column:1/-1;font:500 clamp(1.55rem,2.6vw,2.25rem)/1.1 var(--display);letter-spacing:-.02em}
.room-result{grid-column:1/-1;display:flex;gap:10px;align-items:center;margin-top:8px;font-size:.9375rem;color:#b4e9e4}
.room-result:before{content:'subdirectory_arrow_right';font:400 1.3rem/1 'Material Symbols Outlined';font-feature-settings:'liga'}
.room--heat .room-result{color:#ffb59f}
.room-result--waiting{color:#e4d2a9!important}
.mode-tag{align-self:start;border:1px solid currentColor;padding:3px 9px;font-size:.75rem;color:#b4e9e4}
.room--heat .mode-tag{color:#ffb59f}
.scenario-caption{max-width:810px;margin-top:27px;color:#c7d3d1;font-size:1rem}
.comparison-note{margin-top:16px;color:#a5b9ba;font-size:.8125rem}
.technical-bridge{display:grid;grid-template-columns:1fr 1fr;gap:38px;margin-top:36px}
.technical-bridge article{padding-top:24px;border-top:1px solid #476065}
.technical-bridge h3{font-size:1.125rem;color:#fff}
.technical-bridge p{margin-top:12px;color:#c7d3d1;font-size:1rem}
.operating-detail{margin-top:32px;border-block:1px solid #476065}
.operating-detail summary{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:76px;padding:18px 0;list-style:none;cursor:pointer;color:#b4e9e4;font-size:1rem;font-weight:500}
.operating-detail summary::-webkit-details-marker{display:none}
.operating-detail summary:after{content:'+';font-size:1.5rem;flex:none}
.operating-detail[open] summary:after{content:'−'}
.operating-detail__body{padding-bottom:28px}
.mode-table{border-collapse:collapse;width:100%;font-size:1rem;text-align:left}
.mode-table caption{text-align:left;color:#c7d3d1;font-size:.875rem;padding:0 0 18px}
.mode-table td,.mode-table th{padding:17px 20px;border-block:1px solid #476065;vertical-align:top}
.mode-table thead{color:#b4e9e4;font-size:.8125rem}
.mode-table th{font-weight:500}
.mode-table tbody th{width:30%;padding-left:0}
.mode-table thead th:first-child{padding-left:0}
.mode-table td{color:#c7d3d1;padding-right:0}
.operating-detail__body>p{max-width:880px;margin-top:23px;color:#c7d3d1}
.operating-detail .text-link{margin-top:12px;color:#b4e9e4}
.manufacturer-resources{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding-top:26px;font-size:.875rem}
.manufacturer-resources p{color:var(--slate);margin-bottom:7px}
.manufacturer-resources a{display:flex;align-items:center;gap:16px;min-height:44px;color:var(--teal);font-weight:500}
.manufacturer-resources a:hover{text-decoration:underline}
.package{background:var(--stone)}
.package-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:clamp(45px,8vw,112px);align-items:start}
.package-intro h2{margin-top:18px}
.package-intro .lede{margin-top:27px}
.package-signature{margin-top:33px;padding-top:22px;border-top:1px solid var(--line);font-size:.875rem;color:var(--slate)}
.package-signature strong{display:block;margin-top:3px;color:var(--teal);font-weight:500}
.package-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.package-list li{display:grid;grid-template-columns:34px 1fr;gap:19px;padding:25px 0;border-bottom:1px solid var(--line)}
.package-list__number{padding-top:4px;color:var(--teal);font:500 .8125rem var(--mono)}
.package-list p{margin-top:10px;color:var(--slate)}
.package-list__role{display:block;margin-top:12px;color:var(--teal);font:500 .75rem/1.5 var(--mono);letter-spacing:.04em;text-transform:uppercase}
.scope{padding-top:64px;margin-top:66px;border-top:1px solid var(--line);display:grid;grid-template-columns:.82fr 1.18fr;gap:clamp(45px,8vw,112px)}
.scope-intro h3{margin-top:15px;font:700 clamp(2.65rem,4.5vw,4.6rem)/.96 var(--display);letter-spacing:-.025em}
.scope-intro p:not(.kicker){margin-top:19px;color:var(--slate)}
.scope-intro .text-link{margin-top:23px;color:var(--teal)}
.scope-details{border-top:1px solid var(--line)}
.scope-details details{border-bottom:1px solid var(--line)}
.scope-details summary{display:flex;justify-content:space-between;align-items:center;gap:24px;min-height:78px;padding:20px 0;cursor:pointer;font-weight:500;list-style:none;font-size:1rem}
.scope-details summary::-webkit-details-marker{display:none}
.scope-details summary:after{content:'+';color:var(--teal);font:400 1.5rem var(--body);flex:none}
.scope-details details[open] summary:after{content:'−'}
.scope-details summary:hover{color:var(--teal)}
.scope-details details>div{padding:0 32px 24px 0;color:var(--slate)}
.scope-details details p+p{margin-top:14px}
.scope-details strong{color:var(--ink);font-weight:500}
.proof{position:relative;overflow:hidden;background:var(--ink);color:#fff}
.proof-image{position:absolute;inset:0;overflow:hidden}
.proof-image img{width:100%;height:100%;object-fit:cover;object-position:center 8%}
.proof-image:after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(6,25,30,.94) 0%,rgba(6,25,30,.85) 30%,rgba(6,25,30,.62) 56%,rgba(6,25,30,.15) 85%)}
.proof-image figcaption{position:absolute;z-index:2;bottom:17px;right:22px;max-width:calc(100% - 44px);padding:5px 8px;background:rgba(6,25,30,.76);color:#c2cecd;font-size:.75rem}
.proof-copy{position:relative;z-index:1;width:min(calc(100% - 48px),var(--max));margin:auto;padding-block:clamp(76px,7vw,104px)}
.proof-copy .kicker{color:#82d0c9}
.proof-copy h2{max-width:760px;margin-top:27px;font-size:clamp(3.5rem,5.5vw,5.8rem);line-height:.94;letter-spacing:-.045em}
.proof-copy>.lede{max-width:600px;margin-top:25px;color:#e3e9e7}
.proof-facts{display:grid;grid-template-columns:1fr 1fr;gap:26px;max-width:570px;margin-top:32px;padding-top:25px;border-top:1px solid rgba(227,233,231,.3)}
.proof-facts strong{display:block;color:#e5b869;font:700 3rem/1 var(--display);letter-spacing:-.035em}
.proof-facts span{display:block;margin-top:9px;color:#e3e9e7;font-size:.875rem}
.proof-copy .text-link{margin-top:24px;color:#82d0c9}
.proof-attribution{max-width:590px;margin-top:20px;color:#c2cecd;font-size:.8125rem;line-height:1.55}
.delivery{background:#fff}.delivery .section-intro{align-items:start}
.delivery .lede{margin-top:40px}
.delivery-steps{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);margin:clamp(58px,7vw,88px) 0 0;padding:0;border-block:1px solid var(--line)}
.delivery-steps li{padding:32px 26px 38px;border-left:1px solid var(--line)}
.delivery-steps li:first-child{padding-left:0;border-left:0}
.delivery-steps li:last-child{padding-right:0}
.delivery-steps .step-number{font:500 .8125rem var(--mono);color:var(--teal)}
.delivery-steps h3{margin-top:24px;font-size:1.65rem}
.delivery-steps p{margin-top:12px;color:var(--slate)}
.assessment-cta{background:var(--ink);color:#fff;padding-block:clamp(60px,7vw,95px)}
.assessment-cta__layout{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(35px,7vw,95px);align-items:center}
.assessment-cta h2{margin-top:19px;font-size:clamp(3.35rem,5.8vw,5.8rem);line-height:.94;letter-spacing:-.045em}
.assessment-cta h2 span{color:var(--lime)}
.assessment-cta p:not(.kicker){color:#c7d3d1}
.assessment-cta .button{margin-top:26px}
.site-footer{background:#091c21;color:#fff;padding:54px 0 30px;border-top:1px solid rgba(255,255,255,.1)}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px}
.footer-brand .brand{gap:0}.footer-brand .brand__mark{width:44px;height:44px}.footer-brand .brand__wordmark{width:150px}
.footer-brand p{max-width:340px;margin-top:14px;color:#a5b9ba;font-size:.875rem}
.footer-col{display:grid;align-content:start;gap:9px}
.footer-col strong{color:#87d4ce;font-size:.75rem;letter-spacing:.08em;text-transform:uppercase}
.footer-col a{color:#a8b9bb;font-size:.875rem}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:45px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);color:#a5b9ba;font-size:.75rem}
.material-symbols-outlined{font-size:21px;font-variation-settings:'FILL' 0,'wght' 300,'GRAD' 0,'opsz' 24}
@media(min-width:1500px){.hero-product__image img{width:115%;max-width:115%}}
@media(max-width:1100px){.hero-copy h1{font-size:clamp(3.8rem,6.7vw,5.5rem)}.hero-actions{gap:18px}.delivery-steps li{padding-inline:20px}}
@media(max-width:980px){.js .main-nav{display:none;position:absolute;top:84px;left:0;right:0;margin:0;background:var(--stone);padding:12px 24px 22px;flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line);box-shadow:0 20px 44px -30px rgba(11,32,38,.7)}.js .main-nav.open{display:flex}.main-nav a{min-height:48px;padding:13px 0;white-space:normal;font-size:.82rem;border-bottom:1px solid rgba(11,32,38,.1)}.main-nav a:after{display:none}.js .nav-mobile-cta{display:inline-flex!important;justify-content:center;min-height:47px;margin-top:14px;padding:0 18px;border:0;background:var(--teal);color:white}.js .nav-toggle{display:block}.nav-actions{margin-left:auto}.nav-actions>.nav-cta{display:none}.hero-layout{grid-template-columns:1fr;gap:48px}.hero-copy{max-width:840px}.hero-product{width:100%;max-width:760px;min-height:480px}.hero-product__image{min-height:340px}.hero-product__image img{width:min(100%,600px);max-width:100%}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-col:last-child{grid-column:2/-1}.hero-copy h1{font-size:clamp(3.7rem,7.4vw,6rem)}.hero-product__note{max-width:160px}.package-layout,.scope{gap:50px}.section-intro{gap:40px}.delivery-steps{grid-template-columns:1fr 1fr;row-gap:36px}.delivery-steps li:nth-child(3){border-left:0;padding-left:0}.delivery-steps li:nth-child(2){padding-right:0}.proof-facts{gap:16px}}
@media(max-width:760px){.container{width:calc(100% - 48px)}.breadcrumb{padding-block:20px}.modernization-hero{padding-top:22px}.hero-layout{grid-template-columns:1fr;gap:48px;padding-bottom:64px}.hero-copy{max-width:620px}.hero-copy h1{font-size:clamp(3.9rem,10.5vw,5.6rem)}.hero-copy .lede{max-width:570px}.hero-product{min-height:420px;padding:28px}.hero-product__image{min-height:260px}.hero-product__image img{width:min(100%,560px);max-width:100%;max-height:380px;object-fit:contain}.hero-product__note{max-width:240px}.outcome-rail li{padding:20px 15px;display:block}.outcome-rail strong{display:block;margin-top:9px;font-size:.875rem}.section-intro,.package-layout,.scope,.assessment-cta__layout{grid-template-columns:1fr;gap:28px}.section-intro h2{max-width:650px}.comparison-switch{padding:16px 20px;gap:0 24px}.comparison-switch legend{float:none;width:100%;margin:0;padding-top:14px}.scenario{padding:25px 20px}.scenario-top{align-items:start;flex-direction:column;gap:10px}.room-grid{gap:20px}.room{padding:20px 17px;grid-template-columns:1fr}.mode-tag{width:fit-content}.room-demand{font-size:1.75rem}.room-name{font-size:.75rem}.room-result{font-size:.875rem}.technical-bridge{gap:25px}.scope{padding-top:45px;margin-top:48px}.scope-intro{max-width:560px}.proof-image img{object-position:58% 8%}.proof-image:after{background:linear-gradient(90deg,rgba(6,25,30,.9),rgba(6,25,30,.7))}.proof-copy{padding-block:72px}.proof-copy h2{max-width:620px}.proof-copy>.lede{max-width:600px}.proof-facts{max-width:520px}.delivery .lede{margin-top:0}.delivery-steps{margin-top:30px}.assessment-cta__layout{gap:30px}}
@media(max-width:640px){.container,.proof-copy{width:min(calc(100% - 32px),var(--max))}.section{padding-block:82px}.hero-copy h1{font-size:clamp(3.2rem,15vw,4.5rem)}.hero-copy .lede{font-size:1rem}.hero-actions .button{width:100%}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-col:last-child{grid-column:auto}.footer-bottom{flex-direction:column}.assessment-cta h2{font-size:clamp(3.15rem,15vw,4.35rem)}}
@media(max-width:460px){.hero-copy h1{font-size:clamp(3.2rem,15vw,4.5rem)}.hero-actions{gap:14px 22px}.hero-product{min-height:350px;padding:24px 20px}.hero-product__image{min-height:220px}.hero-product__heading{font-size:.75rem}.hero-product figcaption{font-size:.8125rem;gap:15px}.hero-product__note{max-width:150px}.outcome-rail li{padding-inline:10px}.outcome-rail strong{font-size:.8125rem}.outcome-rail li:first-child{padding-left:0}.comparison-switch{gap:0;flex-direction:column;align-items:start}.room-grid{grid-template-columns:1fr;border-top:0;padding-top:0;gap:18px}.room{grid-template-columns:1fr auto;padding:23px}.room:before{display:none}.room-demand{font-size:2rem}.technical-bridge{grid-template-columns:1fr;gap:25px}.comparison-note{font-size:.8125rem}.delivery-steps{grid-template-columns:1fr;row-gap:0}.delivery-steps li,.delivery-steps li:first-child,.delivery-steps li:nth-child(3){padding:24px 0;border-left:0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:30px 1fr;gap:10px 16px}.delivery-steps h3{margin:0}.delivery-steps p{grid-column:2;margin:0}.step-number{padding-top:4px}.footer-bottom{gap:12px}}
@media(max-width:980px){html:not(.js) .site-header{height:auto;position:relative}html:not(.js) .nav-shell{flex-wrap:wrap;padding-block:18px}html:not(.js) .main-nav{display:flex;flex-wrap:wrap;gap:8px 20px;margin:0;width:100%}html:not(.js) .main-nav a{min-height:36px}html:not(.js) .nav-mobile-cta{display:inline-flex!important}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}