:root{--paper:#f8f9f6;--ink:#242b28;--muted:#63716a;--accent:#2b625b;--line:#dce2dc;--serif:Georgia,'Times New Roman',serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:35px}body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Arial,sans-serif;font-size:16px;line-height:1.6}a{color:inherit;text-decoration:none}button{font:inherit}button,a,summary{-webkit-tap-highlight-color:transparent}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #43877c;outline-offset:5px}.wrap{width:min(1240px,calc(100% - 96px));margin-inline:auto}.header{height:110px;display:flex;align-items:center;justify-content:space-between;gap:25px}.wordmark{font-size:29px;font-weight:600;letter-spacing:-1.4px;display:inline-flex;align-items:baseline}.wordmark span{font-weight:350;color:var(--accent)}.wordmark i{height:5px;width:5px;background:var(--accent);border-radius:50%;margin-left:5px}.header nav{display:flex;gap:35px;font-size:14px}.header nav a:hover{color:var(--accent)}.pill{display:inline-flex;align-items:center;justify-content:center;padding:14px 25px;border-radius:30px;background:var(--accent);color:#fff;font-size:14px;font-weight:500;transition:background .2s,transform .2s}.pill:hover{background:#204d47;transform:translateY(-2px)}.pill.small{padding:10px 20px;background:transparent;color:var(--ink);border:1px solid #cdd6ce}.eyebrow{font-size:12px;line-height:1.6;letter-spacing:1.5px;font-weight:600;text-transform:uppercase;color:var(--accent);margin:0 0 25px}.hero{display:grid;grid-template-columns:1.04fr 1fr;gap:60px;align-items:center;padding-top:68px;padding-bottom:95px}.hero h1{font-size:clamp(38px,4vw,58px);font-weight:500;line-height:1.08;letter-spacing:-2.5px;margin:0 0 30px}.hero h1 span{font-family:var(--serif);font-style:italic;font-weight:400;color:var(--accent);display:block;margin-top:12px}.lead{max-width:450px;font-size:18px;line-height:1.65;color:var(--muted);margin:0 0 30px}.hero-note{font-size:12px;color:var(--muted);margin-top:20px}.blueprint{background:#eef2ed;padding:20px 15px 15px;border:1px solid #e2e7df;border-radius:2px}.blueprint svg{display:block;width:100%;height:auto}.drawing-label,.drawing-bottom{display:flex;justify-content:space-between;padding:0 10px;font-size:10px;letter-spacing:1.3px;color:#62726a}.drawing-bottom{letter-spacing:0;font-size:12px;padding-top:8px}.strap{border-block:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;padding-block:23px;font-size:14px;color:var(--muted)}.strap span:first-child{color:var(--ink)}.section{padding-block:100px}.section-head{display:grid;grid-template-columns:1fr 2fr 1.7fr;gap:30px;align-items:start;margin-bottom:56px}.section-head .eyebrow{padding-top:10px}.section-head>p:last-child{font-size:17px;color:var(--muted);margin:7px 0 0}h2{font-size:clamp(35px,3.8vw,49px);line-height:1.12;letter-spacing:-1.8px;font-weight:450;margin:0}h3{font-weight:500;letter-spacing:-.5px;line-height:1.3}.clue-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:45px}.clue-grid>div{border-top:1px solid var(--line);padding-top:20px}.index{font:italic 20px var(--serif);color:var(--accent)}.clue-grid h3{font-size:23px;margin:20px 0 15px}.clue-grid p{color:var(--muted);max-width:330px}.system-line{text-align:center;border-top:1px solid var(--line);padding-top:32px;margin:38px 0 0;color:var(--muted);font-size:13px}.system-line b{padding-inline:10px;color:#93a59c}.brain-section{background:#eaf0eb}.brain-layout{display:grid;grid-template-columns:1fr 1.8fr;gap:55px}.iq-tabs{display:flex;flex-direction:column}.iq-tabs button{cursor:pointer;border:0;border-top:1px solid #cbd7cd;text-align:left;background:transparent;padding:23px 18px;color:var(--ink);font-size:23px;letter-spacing:-.5px}.iq-tabs button:last-child{border-bottom:1px solid #cbd7cd}.iq-tabs button>span{font-size:12px;color:var(--muted);vertical-align:middle;margin-right:22px}.iq-tabs small{display:block;font-size:14px;color:var(--muted);letter-spacing:0;margin-left:40px}.iq-tabs button[aria-selected=true]{background:var(--accent);color:white;border-radius:4px}.iq-tabs button[aria-selected=true] span,.iq-tabs button[aria-selected=true] small{color:#d0e1d8}.iq-panel{background:var(--paper);padding:42px 45px;border:1px solid #d5dfd5;border-radius:4px;min-height:438px}.iq-panel .eyebrow{margin-bottom:15px}.iq-panel h3{font-size:30px;line-height:1.2;margin:0 0 18px}.iq-panel>p:not(.eyebrow){color:var(--muted);max-width:520px}.connection-diagram{display:flex;align-items:center;justify-content:space-between;gap:13px;margin-block:30px;position:relative}.connection-diagram:before{content:'';position:absolute;left:10%;right:10%;height:1px;background:#bfd0c4}.connection-diagram>span,.core{position:relative;background:var(--paper);padding:8px 12px;border:1px solid #cfdacf;border-radius:30px;font-size:12px;z-index:1}.core{font-size:20px;letter-spacing:-1px;padding:15px 12px;border-color:var(--accent);color:var(--accent)}.core span{font-weight:300}.panel-foot{border-top:1px solid var(--line);padding-top:15px;font-size:13px}.record-section{display:grid;grid-template-columns:1.1fr 1fr;gap:110px;align-items:center}.record-section h2{font-size:43px}.section-copy{font-size:18px;color:var(--muted);max-width:560px;margin:25px 0}.text-label{display:block;color:var(--accent);font-size:14px;margin-top:35px}.record-preview{border:1px solid var(--line);background:#fff;padding:30px 32px;box-shadow:0 20px 45px #253a2b08;transform:rotate(-1deg)}.record-top{display:flex;justify-content:space-between;color:var(--muted);font-size:10px;letter-spacing:1.5px}.record-preview h3{font-size:25px;margin:22px 0 30px}.record-row{display:flex;gap:18px;align-items:center;border-top:1px solid #e8ebe6;padding:17px 0}.record-row>span{color:#8a9b91;font-size:12px}.record-row>span:last-child{margin-left:auto;font-size:25px}.record-row b{font-size:15px;font-weight:500}.record-row small{display:block;color:var(--muted);font-size:13px}.record-base{margin-top:15px;background:#eef3ed;padding:15px;color:var(--accent);font-size:13px}.upgrade{background:#283b34;color:#f4f7f1}.upgrade-inner{padding-block:85px}.upgrade .eyebrow{color:#b4cabe}.upgrade h2{font-size:56px}.upgrade-inner>p:not(.eyebrow){color:#c2cec7;font-size:18px}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:50px;margin-top:60px}.steps>div{border-top:1px solid #50645a;padding-top:20px}.steps span{color:#a4c3b4;font-size:13px}.steps h3{font-size:23px}.steps p{color:#b5c5ba;max-width:300px}.articles-head{grid-template-columns:1fr 2.3fr 1.4fr}.article-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:35px}.article-art{height:190px;background:#e7ede6;display:flex;align-items:center;justify-content:space-around;overflow:hidden;margin-bottom:27px;padding:25px;color:var(--accent)}.article-art>span{font:italic 54px var(--serif)}.bars{height:100px;display:flex;align-items:end;gap:8px}.bars i{width:13px;background:#547e6d;height:40%}.bars i:nth-child(2){height:55%}.bars i:nth-child(3){height:70%}.bars i:nth-child(4){height:85%}.bars i:nth-child(5){height:100%}.art-two{background:#e9eef0;color:#45646a}.rings{position:relative;width:100px;height:100px}.rings i{position:absolute;border:1px solid #749098;border-radius:50%;inset:0}.rings i:nth-child(2){inset:15px}.rings i:nth-child(3){inset:30px}.art-three{background:#edece1;color:#7c7651}.energy-lines{width:85px;display:grid;gap:15px}.energy-lines i{height:1px;background:#9c9368;transform:rotate(-30deg)}.article-grid .eyebrow{font-size:10px;margin-bottom:12px}.article-grid h3{font-size:26px;margin:0 0 12px}.article-grid article>p:not(.eyebrow){font-size:15px;color:var(--muted)}summary{cursor:pointer;font-size:14px;color:var(--accent);padding:12px 0;text-decoration:underline;text-underline-offset:5px}.article-body{font-size:15px;color:var(--muted);border-top:1px solid var(--line)}.homes{border-top:1px solid var(--line);text-align:center;padding-top:70px}.homes .section-copy{margin:25px auto 40px}.home-types{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.home-types span{border:1px solid var(--line);border-radius:30px;padding:10px 19px;font-size:14px}.closing{background:#e6eee7;text-align:center;padding-block:85px}.closing h2{font-size:58px}.closing p:not(.eyebrow){color:var(--muted);font-size:18px;margin:25px auto}.closing .light{background:var(--accent);padding-inline:34px}.closing-link{display:block;margin-top:20px;font-size:14px;color:var(--accent);text-decoration:underline;text-underline-offset:4px}footer{padding-block:32px;display:flex;align-items:center;gap:30px}footer p{font-size:13px;color:var(--muted)}footer small{margin-left:auto;font-size:12px;color:var(--muted)}.skip{position:fixed;top:-100px;left:20px;z-index:20;background:var(--ink);color:white;padding:10px}.skip:focus{top:10px}@media(min-width:1450px){.hero{padding-block:90px 110px}.hero h1{font-size:62px}}@media(max-width:1000px){.wrap{width:calc(100% - 56px)}.hero{gap:25px}.hero h1{font-size:43px;letter-spacing:-1.7px}.section-head{grid-template-columns:.8fr 1.5fr 1.3fr;gap:20px}.section{padding-block:75px}.record-section{gap:45px}.brain-layout{gap:25px}.iq-panel{padding:30px}.connection-diagram{gap:5px;flex-wrap:wrap}.connection-diagram>span{font-size:11px;padding:7px}.article-grid{gap:20px}footer{gap:15px;flex-wrap:wrap}}@media(max-width:700px){.wrap{width:calc(100% - 40px)}.header{height:85px}.header nav{display:none}.wordmark{font-size:26px}.hero{grid-template-columns:1fr;padding-top:40px;padding-bottom:45px;gap:35px}.hero h1{font-size:44px;max-width:530px}.hero .eyebrow{font-size:10px;letter-spacing:1.3px}.lead{font-size:17px}.blueprint{max-width:500px;width:100%;margin:auto}.strap{display:block;padding-block:20px}.strap span{display:block;font-size:13px}.section{padding-block:60px}.section-head{display:block;margin-bottom:35px}.section-head .eyebrow{padding:0}.section-head h2{margin-bottom:22px}h2{font-size:39px}.clue-grid{grid-template-columns:1fr;gap:25px}.clue-grid h3{margin-top:14px}.clue-grid p{max-width:none}.system-line{line-height:2.2}.brain-layout{grid-template-columns:1fr;gap:25px}.iq-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px}.iq-tabs button{font-size:20px;padding:15px 13px;border:1px solid #cbd7cd;border-radius:4px}.iq-tabs button:last-child{border:1px solid #cbd7cd}.iq-tabs button>span{margin-right:7px;font-size:11px}.iq-tabs small{font-size:12px;margin-left:0}.iq-panel{padding:25px;min-height:0}.iq-panel h3{font-size:27px}.connection-diagram{justify-content:center}.connection-diagram>span{font-size:11px}.record-section{grid-template-columns:1fr;gap:25px}.record-section h2{font-size:39px}.record-preview{padding:25px}.upgrade-inner{padding-block:60px}.upgrade h2,.closing h2{font-size:43px}.steps{grid-template-columns:1fr;gap:20px;margin-top:40px}.steps h3{margin-block:12px}.steps p{max-width:none}.article-grid{grid-template-columns:1fr;gap:40px}.article-art{height:185px}.article-grid h3 br{display:none}.closing{padding-block:60px}footer{align-items:flex-start;gap:5px 20px;padding-block:25px}footer small{width:100%;margin:10px 0 0}footer p{margin-left:auto}.home-types span{font-size:13px}.eyebrow{font-size:11px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.pill{transition:none}}

.brand-logo{display:block;width:250px;flex-shrink:0}.brand-logo img{display:block;width:100%;height:auto}.footer-logo{width:210px}@media(max-width:700px){.brand-logo{width:195px}.header{gap:12px}.header .pill.small{font-size:12px;padding:9px 13px}.footer-logo{width:190px}}@media(max-width:360px){.header .brand-logo{width:165px}}
:root{--paper:#fafbf8;--ink:#192923;--accent:#235d51}.header{height:120px;border-bottom:1px solid var(--line)}.brand-logo{width:290px}.footer-logo{width:235px}.hero{grid-template-columns:1.12fr 1fr;gap:58px;padding-block:88px 95px}.hero h1{font-size:clamp(45px,4.7vw,68px);letter-spacing:-3px;line-height:1.04}.hero h1 span{margin-top:18px}.hero .eyebrow{letter-spacing:2px;font-size:13px}.hero .lead{font-size:19px;max-width:480px}.hero-actions{display:flex;align-items:center;gap:24px;flex-wrap:wrap}.quiet-link{font-size:14px;border-bottom:1px solid #9ab5a4;padding-block:6px;color:var(--accent)}.pill{padding:16px 27px;font-size:15px}.hero-note{margin-top:25px}.blueprint{border-radius:16px;background:#e9f0e8;padding:24px 16px;box-shadow:0 30px 65px #254b3210;transform:rotate(1.5deg)}.drawing-label{font-size:11px}.strap{font-size:16px;padding-block:26px}.section{padding-block:115px}.section-head h2{font-size:50px}.clue-grid h3{font-size:25px}.brain-section{background:#dfeadf}.iq-panel{border-radius:14px;padding:45px 48px;box-shadow:0 20px 50px #28473108}.record-preview{border-radius:12px;padding:35px}.record-section h2{font-size:48px}.upgrade{background:#192e26}.upgrade h2{font-size:65px;font-weight:450;letter-spacing:-2.5px}.article-art{height:215px;border-radius:10px}.article-grid h3{font-size:29px}.article-grid summary{font-weight:500}.homes{padding-top:85px}.closing{background:#192e26;color:#f4f7f1;padding-block:100px}.closing .eyebrow{color:#a5c6b1}.closing h2{font-size:68px;letter-spacing:-2.5px}.closing p:not(.eyebrow){color:#c2d2c6}.closing .pill{background:#e2ecdf;color:#18382b}.launch-status{display:block;color:#b5cfbd;font-size:14px;margin-bottom:25px}footer{padding-block:35px}.pro-section{background:#e9efe8;border-top:1px solid var(--line)}.pro-section .section{display:grid;grid-template-columns:1fr 1fr;gap:90px;align-items:center}.pro-section p:not(.eyebrow){font-size:18px;color:var(--muted)}.pro-badge{display:inline-block;font-size:35px;font-weight:600;border:1px solid #abc5b5;border-radius:12px;padding:15px 25px;background:#fafbf8}.pro-badge span{color:var(--accent);font-weight:400}
@media(min-width:1450px){.hero h1{font-size:68px}}@media(max-width:1000px){.hero{gap:30px}.hero h1{font-size:48px}.header .brand-logo{width:245px}.section-head h2{font-size:40px}.section{padding-block:85px}.iq-panel{padding:32px}.record-section h2{font-size:41px}}@media(max-width:700px){.header{height:95px}.header .brand-logo{width:205px}.hero{grid-template-columns:1fr;padding-block:48px 55px;gap:45px}.hero h1{font-size:47px;letter-spacing:-2px}.hero .eyebrow{font-size:11px}.hero .lead{font-size:18px}.hero-actions{gap:18px}.blueprint{transform:none;border-radius:12px}.section{padding-block:65px}.section-head h2,.record-section h2{font-size:40px}.upgrade h2,.closing h2{font-size:47px;letter-spacing:-1.8px}.iq-panel{padding:27px}.closing{padding-block:75px}.footer-logo{width:200px}.pro-section .section{grid-template-columns:1fr;gap:25px}}@media(max-width:360px){.header .brand-logo{width:165px}.hero h1{font-size:41px}}

.topic-hint{font-size:13px!important;letter-spacing:.08em;text-transform:uppercase;margin:28px 0 0;color:#2b625b}
.connection-diagram>button{position:relative;border:1px solid #cdd7d0;border-radius:40px;background:#fafbf8;padding:12px 16px;font:inherit;font-size:14px;color:#24362f;cursor:pointer;transition:background .2s,color .2s}
.connection-diagram>button:hover,.connection-diagram>button[aria-pressed="true"]{background:#2b625b;color:white;border-color:#2b625b}
.connection-diagram>button:focus-visible{outline:3px solid #2b625b;outline-offset:4px}
.topic-detail{background:#edf3ee;border-radius:12px;padding:20px 24px;margin:8px 0 24px}.topic-detail[hidden]{display:none}.topic-detail h4{margin:0 0 8px;font-size:20px}.topic-detail p{margin:0;font-size:16px!important;line-height:1.6}
.contact-note{margin-top:28px!important;font-size:16px!important}.contact-note a,footer p a{color:inherit;text-underline-offset:4px}footer p a{display:inline-block;margin-top:8px;font-size:14px}
/* HouseIQ learning edition */
:root{--paper:#fbfbf8;--ink:#182e2a;--accent:#215d54}
.header{height:100px;border-bottom:1px solid var(--line)}.header nav{font-size:14px;gap:24px}.hero{grid-template-columns:1fr 1.12fr;gap:44px;padding-top:48px;padding-bottom:54px}.hero h1{font-size:clamp(40px,4.1vw,62px);letter-spacing:-2.7px}.hero h1 span{color:#215d54}.hero .lead{font-size:18px;max-width:440px}.hero-note{font-size:14px}.hero .eyebrow{font-size:14px}.house-explorer{position:relative;aspect-ratio:1/1.06;background:#102e2d;border-radius:24px;overflow:hidden;box-shadow:0 22px 60px #173e3024}.house-explorer>img{width:100%;height:100%;object-fit:cover;display:block}.explorer-caption{position:absolute;z-index:1;left:24px;right:24px;top:23px;display:flex;justify-content:space-between;color:#fff;font-size:12px;letter-spacing:.1em}.explorer-bottom{position:absolute;bottom:20px;left:24px;color:white;font-size:14px}.hotspot{position:absolute;display:flex;align-items:center;gap:9px;background:#ffffffed;color:#143e35;border:1px solid #ffffff70;padding:9px 14px 9px 9px;border-radius:30px;font-size:14px;box-shadow:0 5px 20px #0003;transition:transform .2s,background .2s}.hotspot b{display:grid;place-items:center;background:#215d54;color:white;border-radius:50%;width:27px;height:27px;font-size:12px}.hotspot:hover{transform:translateY(-4px);background:white}.hs-insulation{top:24%;left:5%}.hs-windows{top:42%;right:4%}.hs-heating{bottom:27%;left:4%}.hs-cooling{bottom:14%;right:5%}.learning-section{padding-block:72px}.learning-heading{display:flex;justify-content:space-between;gap:40px;align-items:end;margin-bottom:36px}.learning-heading h2,.learning-section>h2{font-size:clamp(34px,3.8vw,52px);line-height:1.08;letter-spacing:-1.8px;font-weight:500;margin:0}.learning-heading>p{color:var(--muted);font-size:17px;max-width:350px}.learning-heading .eyebrow{font-size:12px;margin-bottom:18px}.topic-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.topic-card{position:relative;min-height:310px;background:var(--topic);padding:24px;border-radius:18px;overflow:hidden;color:#1c302b;transition:transform .2s,box-shadow .2s}.topic-card:hover{transform:translateY(-6px);box-shadow:0 15px 28px #1b35271c}.topic-no{font-size:12px;font-weight:600;letter-spacing:.08em}.topic-symbol{display:block;font-size:68px;font-family:Georgia,serif;line-height:1.2;margin:22px 0 8px;opacity:.65}.topic-card h3{font-size:24px;line-height:1.1;letter-spacing:-.7px;margin:12px 0}.topic-card p{font-size:16px;line-height:1.4;margin:0 0 22px;max-width:210px}.read-label{display:inline-block;font-size:14px;border-bottom:1px solid currentColor;padding-bottom:4px;font-weight:500}.strap{font-size:16px;margin-top:12px}.brain-section{background:#123e38;color:#f6f8f2}.brain-section .eyebrow{color:#b7d5c3}.brain-section .section-head>p:last-child{color:#c7d8d0}.iq-tabs button{color:#e8f2eb;border-color:#ffffff30}.iq-tabs button small,.iq-tabs button>span{color:#b7cfc5}.iq-tabs button[aria-selected="true"]{background:#d1e9cf;color:#173d33}.iq-tabs button[aria-selected="true"] small,.iq-tabs button[aria-selected="true"]>span{color:#2f6252}.iq-panel{color:var(--ink);background:#fafbf8}.iq-panel .eyebrow{color:var(--accent)}.connection-diagram{flex-wrap:wrap;gap:12px}.journal-grid,.story-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.story-card{display:flex;flex-direction:column;align-items:start;background:#f0f2eb;border-radius:18px;padding:30px;min-height:270px;border-top:4px solid #215d54;transition:background .2s,transform .2s}.story-card:nth-child(2n){background:#f2ede4;border-color:#bc8356}.story-card:hover{transform:translateY(-4px);background:#e4ede3}.story-meta{font-size:12px;letter-spacing:.09em;font-weight:600;color:#37675b}.story-card h3{font-size:27px;line-height:1.2;letter-spacing:-.7px;margin:24px 0 12px;max-width:420px}.story-card p{font-size:17px;color:#53635a;line-height:1.6;margin:0 0 24px}.story-card .read-label{margin-top:auto}.upgrade{background:#d5e5da}.closing{background:#123e38;color:#f5f7ed}.closing .eyebrow{color:#b9d6c4}.closing p{color:#dae7dc}.closing .pill{background:#d1e9cf;color:#173d33}.closing .launch-status{color:#d4e4da}.pro-section{background:#eebd65}.topic-hero{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;padding-block:65px}.topic-hero h1{font-size:clamp(42px,5vw,68px);letter-spacing:-2.7px;line-height:1.02;font-weight:500;margin:0 0 28px}.topic-hero .lead{max-width:500px}.breadcrumb{display:inline-block;font-size:14px;text-decoration:underline;text-underline-offset:5px;margin-bottom:30px;color:#526d62}.topic-hero .eyebrow{font-size:13px}.topic-visual{position:relative;border-radius:22px;overflow:hidden;background:var(--topic);aspect-ratio:1}.topic-visual img{width:100%;height:100%;object-fit:cover}.visual-caption{position:absolute;bottom:22px;left:22px;background:var(--topic);border-radius:40px;padding:10px 20px;font-size:16px;font-weight:500}.topic-hero+.learning-section{border-top:1px solid var(--line)}.learning-section>h2{max-width:720px;margin-bottom:36px}.related{padding:40px 0 70px}.related-links{display:flex;flex-wrap:wrap;gap:12px}.related-links a{border:1px solid #becdc1;padding:13px 22px;border-radius:40px;font-size:16px}.related-links a:hover{background:#d5e5da}.article-intro{padding-block:60px;max-width:1000px}.article-intro h1{font-size:clamp(38px,5vw,68px);line-height:1.07;letter-spacing:-2px;max-width:900px;margin:0 0 28px;font-weight:500}.article-intro .lead{max-width:740px;font-size:23px}.article-reading{width:min(720px,calc(100% - 48px));margin:0 auto;padding-bottom:80px}.article-reading section{padding-bottom:26px}.article-reading h2{font-size:27px;line-height:1.2;letter-spacing:-.6px;font-weight:500}.article-reading p{font-size:19px;line-height:1.85;color:#42584e}.takeaway{background:#d5e5da;border-left:4px solid #215d54;padding:25px 30px;border-radius:0 12px 12px 0;margin:20px 0 32px}.takeaway .eyebrow{font-size:12px;margin-bottom:12px}.takeaway p:last-child{margin:0;color:#183d32}.source-note{font-size:14px;margin:0 0 32px;color:#526d62}.source-note a{text-decoration:underline;text-underline-offset:4px}footer{padding-block:38px}
@media(max-width:1000px){.topic-grid{grid-template-columns:repeat(2,1fr)}.hero{gap:24px}.hero h1{font-size:42px}.hotspot{font-size:12px;padding:7px 10px 7px 7px}.hotspot b{width:22px;height:22px}.header nav{gap:15px}.topic-hero{gap:30px}}
@media(max-width:700px){.wrap{width:calc(100% - 40px)}.header{height:88px;gap:12px}.header nav{display:none}.header .brand-logo{max-width:190px}.hero{grid-template-columns:1fr;gap:28px;padding-top:36px;padding-bottom:20px}.hero h1{font-size:43px;letter-spacing:-1.8px}.hero .lead{font-size:17px}.house-explorer{aspect-ratio:1.1}.hotspot{font-size:14px}.learning-section{padding-block:46px}.learning-heading{display:block;margin-bottom:26px}.learning-heading h2,.learning-section>h2{font-size:36px}.learning-heading>p{font-size:16px}.topic-grid{gap:12px}.topic-card{padding:18px;min-height:300px}.topic-card h3{font-size:22px}.topic-card p{font-size:15px}.topic-symbol{font-size:52px}.topic-no{font-size:12px}.journal-grid,.story-grid{grid-template-columns:1fr}.story-card{padding:24px;min-height:250px}.story-card h3{font-size:26px}.topic-hero{grid-template-columns:1fr;gap:30px;padding-block:35px}.topic-hero h1{font-size:46px}.topic-visual{aspect-ratio:1.2}.article-intro{padding-block:35px}.article-intro h1{font-size:42px}.article-intro .lead{font-size:20px}.article-reading p{font-size:18px}.explorer-caption{left:18px;right:18px;top:18px;font-size:11px}.explorer-bottom{left:18px;bottom:13px}.hs-insulation{top:23%;left:3%}.hs-windows{top:42%;right:3%}.hs-heating{bottom:26%;left:3%}.hs-cooling{bottom:12%;right:3%}.connection-diagram>button{padding:10px 12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}

.home-story-card{display:block;width:min(100%,470px);margin-top:30px;padding:26px 30px 25px;background:#192e2b;border:1px solid #293e38;border-radius:12px;color:#fff;box-shadow:0 12px 24px #142d2510}
.story-ticket{display:block;position:static;margin:0 0 20px;padding:0;color:#b7cec3;font-size:12px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;background:none;border:0;transform:none;border-radius:0}
.home-story-card p{font-size:clamp(28px,2.6vw,36px);line-height:1.12;letter-spacing:-1px;font-weight:400;margin:0 0 20px;color:#f7f8f3}
.home-story-card strong{font-weight:500;color:#d2e7d8}
.home-story-card>span:last-child{display:block;border-top:1px solid #ffffff24;padding-top:16px;font-size:16px;color:#c8d6cc}
@media(max-width:700px){.home-story-card{padding:24px;border-radius:10px}.home-story-card p{font-size:30px}}
/* Future home identity and preview */
.identity-card{position:relative;width:100%;max-width:555px;padding:24px 26px;background:#172f2b;border-radius:16px;overflow:hidden;box-shadow:0 15px 28px #123b2518;transition:transform .2s,box-shadow .2s}.identity-card:hover{transform:translateY(-4px);box-shadow:0 20px 35px #123b252b}.identity-top{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;letter-spacing:.11em;color:#bed1c6}.identity-preview{border:1px solid #91b5a270;border-radius:30px;padding:5px 9px;font-size:10px;white-space:nowrap}.identity-body{display:flex;align-items:center;gap:24px;margin:26px 0}.identity-body img{padding:10px;background:#edf3e9;border-radius:50%;flex-shrink:0}.identity-card .identity-body p{font-size:36px;line-height:1.08;margin:0;font-weight:400}.identity-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;border-top:1px solid #ffffff24;padding-top:18px;font-size:14px;color:#d0dfd5}.identity-link{border-bottom:1px solid #d0dfd5;padding-bottom:3px;white-space:nowrap;font-size:14px}.future-hero{display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:center;padding-block:65px 80px}.future-hero h1{font-size:clamp(48px,6vw,80px);font-weight:500;line-height:1.02;letter-spacing:-3px;margin:0 0 28px}.future-hero .lead{max-width:510px;font-size:20px}.future-status{font-size:14px;color:#5f786c}.home-pass{position:relative;background:#183e36;color:#f5f6ee;border-radius:20px;padding:34px;box-shadow:0 25px 45px #183e3628;transform:rotate(2deg)}.pass-header{display:flex;align-items:center;gap:16px;font-size:12px;letter-spacing:.12em;line-height:1.5;color:#bed8c7}.pass-header img{background:#edf3e9;border-radius:50%;padding:8px}.pass-title{font-size:46px;line-height:1.08;letter-spacing:-1.8px;margin:36px 0 28px}.pass-rule{height:1px;background:#b7d0bd50}.pass-caption{font-size:17px;color:#d1e1d2}.pass-code{display:flex;flex-direction:column;gap:8px;border-top:1px dashed #b7d0bd50;margin-top:28px;padding-top:22px}.pass-code span{font-size:11px;letter-spacing:.12em;color:#a9c4b4}.pass-code b{font-size:16px;letter-spacing:.07em;font-weight:500}.future-section{padding-block:70px;border-top:1px solid var(--line)}.future-section h2,.future-example h2,.future-close h2{font-size:clamp(36px,4vw,54px);font-weight:500;line-height:1.1;letter-spacing:-1.7px;margin:0 0 36px}.future-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px 60px;margin-top:50px}.future-grid>div{border-top:1px solid #cad8ce;padding-top:22px}.future-number,.privacy-label{font-size:12px;letter-spacing:.08em;color:#37685a}.future-grid h3,.privacy-grid h3{font-size:26px;font-weight:500;letter-spacing:-.6px;line-height:1.2;margin:20px 0 14px}.future-grid p,.privacy-grid p,.future-example p,.future-close p{font-size:17px;line-height:1.7;color:#546c5f}.future-example{background:#d5e5da;padding-block:75px}.future-example>.wrap{display:grid;grid-template-columns:1fr 1.2fr;gap:65px;align-items:center}.future-example h2{margin-bottom:24px}.future-example .example-note{font-size:14px}.equipment-preview{background:#fbfcf8;border-radius:18px;padding:30px;box-shadow:0 15px 40px #1d492418}.equipment-top{display:flex;justify-content:space-between;gap:20px;font-size:11px;letter-spacing:.08em;color:#5e7d6a}.equipment-preview h3{font-size:28px;font-weight:500;letter-spacing:-.8px;margin:30px 0 4px}.equipment-preview .equipment-sub{margin:0;font-size:14px}.equipment-preview dl{margin:24px 0}.equipment-preview dl>div{display:flex;justify-content:space-between;gap:28px;padding:15px 0;border-top:1px solid #d7e2d9;font-size:15px}.equipment-preview dt{color:#647a6a}.equipment-preview dd{margin:0;text-align:right;max-width:230px}.equipment-preview .equipment-note{font-size:13px;margin:0}.privacy-intro{font-size:19px;max-width:800px;line-height:1.8;color:#546c5f}.privacy-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:42px}.privacy-grid>div{padding:24px;border-radius:14px;background:#f0f3ed}.privacy-grid>div:last-child{background:#e1eae2}.future-close{padding-block:70px;background:#173e35;color:white}.future-close .eyebrow{color:#c1d8c4}.future-close p{color:#d4e2d7}.future-close .pill{background:#d2e7d8;color:#173e35}.future-close .contact-note{font-size:16px}
@media(max-width:700px){.identity-card{padding:22px}.identity-top{font-size:10px;letter-spacing:.05em}.identity-body{gap:18px}.identity-body img{width:64px;height:64px}.identity-card .identity-body p{font-size:31px}.identity-bottom{align-items:start;flex-direction:column;gap:10px}.future-hero{grid-template-columns:1fr;gap:36px;padding-block:35px 55px}.future-hero h1{font-size:54px}.home-pass{transform:none;padding:28px}.pass-title{font-size:40px}.future-section{padding-block:45px}.future-grid,.privacy-grid{grid-template-columns:1fr;gap:24px}.future-example{padding-block:45px}.future-example>.wrap{grid-template-columns:1fr;gap:28px}.equipment-preview{padding:23px}.equipment-top{font-size:10px}.equipment-preview dl>div{gap:20px}.future-close{padding-block:45px}}
.header-preview{display:flex;align-items:center;gap:11px;flex-shrink:0;background:#172f2b;color:#f6f8f2;border:1px solid #29473b;border-radius:12px;padding:10px 15px 10px 11px;transition:background .2s,transform .2s}.header-preview:hover{background:#245045;transform:translateY(-2px)}.header-preview img{padding:5px;background:#edf3e9;border-radius:50%;flex-shrink:0}.header-preview b{display:block;font-size:14px;font-weight:500;line-height:1.4}.header-preview small{display:block;font-size:12px;line-height:1.4;color:#bad2c3}.header-preview .header-preview-mobile{display:none}
@media(max-width:1000px) and (min-width:701px){.header nav{gap:12px}.header .brand-logo{max-width:220px}.header-preview{padding:9px;gap:8px}.header-preview b{font-size:13px}}
@media(max-width:700px){.header-preview{gap:8px;padding:8px 10px;border-radius:10px}.header-preview img{width:30px;height:30px;padding:4px}.header-preview .header-preview-desktop{display:none}.header-preview .header-preview-mobile{display:block;font-size:14px}.header-preview small{font-size:12px}.header .brand-logo{max-width:170px;min-width:0}.header{gap:10px}}
@media(max-width:370px){.header .brand-logo{max-width:145px}.header-preview{padding:7px;gap:6px}.header-preview .header-preview-mobile{font-size:13px}}

.future-hero .chapter-copy{margin-top:-8px}.chapter-copy strong{display:inline-block;color:var(--ink);font-weight:500;margin-bottom:8px}
/* Section 04 uses a light surface: keep all copy dark and readable. */
.upgrade{color:#182e2a}.upgrade .eyebrow{color:#285f50}.upgrade h2,.upgrade .steps h3{color:#182e2a}.upgrade-inner>p:not(.eyebrow),.upgrade .steps p{color:#3e594c}.upgrade .steps span{color:#285f50}.upgrade .steps>div{border-top-color:#8aa898}
.strap{display:none}.approach-redesign{padding-block:30px 72px}.approach-heading{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:end;margin-bottom:38px}.approach-heading h2{font-size:clamp(42px,4.5vw,62px);line-height:1.05;letter-spacing:-2px;font-weight:500;margin:0}.approach-heading h2 em{font-family:Georgia,serif;font-weight:400;color:#215d54}.approach-heading .eyebrow{margin-bottom:18px}.approach-intro{border-left:2px solid #b5cfbd;padding-left:25px}.approach-label{font-size:12px;letter-spacing:.1em;color:#215d54}.approach-intro p{font-size:18px;line-height:1.65;color:#52675c;margin:14px 0 0}.clue-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.clue-card{display:flex;flex-direction:column;align-items:start;padding:28px;border-radius:18px;color:#173d35;background:#e2eaf0;transition:transform .2s,box-shadow .2s}.clue-card:hover{transform:translateY(-5px);box-shadow:0 14px 25px #1b352518}.energy-clue{background:#f3e3c9}.moisture-clue{background:#dfe9db}.clue-top{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;font-size:12px;letter-spacing:.08em;font-weight:500}.clue-mark{font-family:Georgia,serif;font-size:24px;letter-spacing:-1px;color:#4f7269}.clue-card .clue-question{font-size:36px;line-height:1.1;letter-spacing:-1.3px;margin:28px 0 22px;color:#173d35}.clue-card h3{font-size:21px;line-height:1.3;letter-spacing:-.5px;font-weight:500;margin:0 0 14px}.clue-card>p:not(.clue-question){font-size:16px;line-height:1.65;color:#4c6458;margin:0 0 25px}.clue-card .read-label{margin-top:auto}.connected-strip{display:flex;align-items:center;gap:50px;padding:26px 30px;margin-top:22px;border:1px solid #d8e2d6;border-radius:14px;background:#f1f4ed}.connected-strip>span{font-size:18px;line-height:1.4;white-space:nowrap;color:#215d54}.connected-strip strong{font-weight:500}.connected-strip p{font-size:15px;line-height:1.8;color:#52685b;margin:0}
@media(max-width:700px){.approach-redesign{padding-block:12px 45px}.approach-heading{grid-template-columns:1fr;gap:25px;margin-bottom:25px}.approach-heading h2{font-size:44px}.approach-intro p{font-size:16px}.clue-cards{grid-template-columns:1fr;gap:15px}.clue-card{padding:25px}.clue-card .clue-question{font-size:34px;margin-top:20px}.connected-strip{flex-direction:column;align-items:start;gap:16px;padding:23px}}
/* A shared doorway keeps encyclopedia learning within reach on every screen. */
.encyclopedia-mobile{display:none}.encyclopedia-doorway{display:flex;flex-wrap:wrap;align-items:baseline;gap:.75rem 1.5rem;margin:0 0 1.75rem;font-size:1rem}.encyclopedia-doorway a{color:var(--accent);text-decoration:underline;text-underline-offset:5px;padding:.5rem 0}.encyclopedia-doorway span{color:var(--muted);font-size:.9375rem}
@media(max-width:700px){.header .brand-logo{flex-shrink:1}.encyclopedia-mobile{display:block;border-bottom:1px solid var(--line)}.encyclopedia-mobile a{display:inline-block;padding:.65rem 0;font-size:.9375rem;color:var(--accent);text-decoration:underline;text-underline-offset:4px}}
/* Let enlarged text use another row instead of clipping navigation or the logo. */
@media(max-width:1000px){.header{height:auto;min-height:88px;flex-wrap:wrap;padding-block:12px}.header nav{flex-wrap:wrap}.header-preview{max-width:100%;overflow-wrap:anywhere}}
@media(max-width:700px){.header .brand-logo{flex:1 1 110px;min-width:110px}}