@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;600;650;700&family=Manrope:wght@400;500;600;650;700;800&display=swap');
:root{--paper:#f2f5f5;--ink:#112c3c;--muted:#516975;--line:#cfdbdf;--accent:#176c58;--mint:#7be5c0;--dark:#0c202e;--font:'DM Sans',Arial,sans-serif}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.6 var(--font)}button,input{font:inherit}button,a,input,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-underline-offset:4px}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #d16b18;outline-offset:5px}button{border:0}header,main,footer{max-width:1400px;margin:auto;padding-inline:52px}.top{height:100px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:13px;text-decoration:none;font-size:12px;letter-spacing:1.7px;font-weight:700}.logo{display:grid;place-content:center;background:var(--ink);color:var(--mint);width:46px;height:46px;border-radius:50%;font:700 28px/1 Arial;letter-spacing:-2px;position:relative;display:block;text-align:center;padding-top:9px}.logo sub{font-size:15px;vertical-align:baseline;position:relative;top:6px;left:1px}.occasion{font-size:12px;letter-spacing:1.2px;text-decoration:none;font-weight:700}.occasion span{display:block;font-size:14px;font-weight:400;letter-spacing:0;color:var(--muted)}.intro{display:flex;justify-content:space-between;align-items:end;gap:32px;padding:45px 0 35px}.eyebrow{font-size:12px!important;font-weight:700;letter-spacing:1.7px;line-height:1.6;margin:0 0 16px}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:'Manrope',var(--font)}h1{font-size:clamp(35px,4.3vw,58px);line-height:1.16;letter-spacing:-2.2px;font-weight:650;margin-bottom:0}h1 span{color:var(--accent)}.intro-right{max-width:365px;padding-bottom:2px}.intro-right p{margin-bottom:9px}.muted{color:var(--muted);font-size:14px}.tabs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:0 0 24px}.tab{display:flex;text-align:left;align-items:center;padding:20px 24px;gap:16px;border:1px solid var(--line);background:transparent;border-radius:8px;font-weight:600;color:var(--ink);transition:background .15s}.tab small{display:block;font-size:14px;font-weight:400;color:var(--muted);margin-top:1px}.tab-num{font-size:13px;color:var(--muted);align-self:start;padding-top:3px}.tab-symbol{margin-left:auto;font-size:25px;font-weight:400}.tab.active{background:var(--ink);color:white;border-color:var(--ink)}.tab.active small,.tab.active .tab-num{color:var(--mint)}.tab[data-tab=air].active small,.tab[data-tab=air].active .tab-num{color:#f6bd7b}.tab[data-tab=climate].active small,.tab[data-tab=climate].active .tab-num{color:#a7c6ff}.panel[hidden]{display:none}.lab{display:grid;grid-template-columns:minmax(300px,.87fr) minmax(0,1.5fr);border:1px solid var(--line);border-radius:12px;overflow:hidden;background:white}.controls{padding:32px}.controls>.eyebrow{color:var(--accent)}h2{font-size:32px;line-height:1.25;letter-spacing:-1px;font-weight:650;margin-bottom:18px}.controls>p:not(.eyebrow){color:var(--muted);font-size:16px;line-height:1.65;margin-bottom:22px}.slider-head{display:flex;justify-content:space-between;align-items:center;gap:10px;font-size:14px;margin:18px 0 6px}.slider-head output{font-weight:700;color:var(--accent);white-space:nowrap}input[type=range]{width:100%;accent-color:var(--accent);height:22px;margin:0;cursor:pointer}.range-ends{font-size:12px;display:flex;justify-content:space-between;color:var(--muted)}.presets{display:flex;flex-wrap:wrap;gap:7px;margin-top:17px}.presets button{background:#edf3f2;border:1px solid transparent;color:var(--muted);padding:6px 12px;border-radius:5px;font-size:14px}.presets button.active{border-color:var(--accent);color:var(--accent);background:#e2f3ed}.result{border-top:1px solid var(--line);padding-top:22px;margin-top:25px}.result .eyebrow{font-size:11px!important;color:var(--muted)}.result h3{font-size:19px;margin:8px 0;line-height:1.35}.result p{font-size:14px;color:var(--muted);line-height:1.6;margin-bottom:0}.note{font-size:12px!important;line-height:1.65!important;color:var(--muted);margin:18px 0 0!important}.visual{background:var(--dark);color:#e8f1f5;padding:25px 28px 21px;display:flex;flex-direction:column;justify-content:space-between;min-width:0}.visual-top,.visual-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px}.visual-top{letter-spacing:1.3px}.badge{font-size:11px;letter-spacing:0;background:#213b4a;border:1px solid #375261;color:#b7cbd4;padding:5px 8px;border-radius:4px;white-space:nowrap}.visual svg{width:100%;height:auto;display:block;min-height:300px;margin:20px 0}.diagram-label{font:13px var(--font);fill:#afc5d2}.formula{font:600 26px var(--font);fill:#f6bd7b}.visual-bottom{color:#b7cbd4}.visual-note{font-size:12px;color:#a4bac6;border-top:1px solid #2b4350;padding-top:15px;margin:16px 0 0;line-height:1.65}.legend-dot{width:7px;height:7px;display:inline-block;background:var(--mint);border-radius:50%;margin-right:5px}.legend-dot.amber{background:#f6bd7b}.legend-dot.blue{background:#a7c6ff}.legend-line{width:20px;height:2px;background:#f6cf78;display:inline-block;vertical-align:middle;margin-left:15px;margin-right:5px}.text-button{background:none;color:#c2d5de;text-decoration:underline;text-underline-offset:4px;font-size:12px;padding:7px 0}.under-grid{display:grid;grid-template-columns:1fr 1fr;margin-top:36px;gap:52px}.under-grid article{padding-top:24px;border-top:1px solid var(--line)}.under-grid .eyebrow{color:var(--muted)}h3{font-size:24px;line-height:1.35;font-weight:650;letter-spacing:-.4px;margin-bottom:17px}.under-grid p{color:var(--muted)}.source-link{display:inline-block;font-size:12px;color:var(--accent);margin-top:6px}.steps{display:flex;gap:12px;margin:20px 0}.steps button{width:38px;height:38px;border-radius:50%;background:#e0e9e9;color:var(--muted);font-size:14px}.steps button.active{background:var(--accent);color:white}.step-title{font-size:17px;font-weight:700;margin-bottom:5px;color:var(--ink)!important}#step-content{min-height:136px}.fact-inline{display:flex;align-items:center;gap:20px;background:#e4eeed;padding:16px;margin-top:20px}.fact-inline strong{font-size:28px;white-space:nowrap;font-weight:500}.fact-inline span{font-size:13px;line-height:1.5;color:var(--muted)}.recovery{background:#deede8;display:grid;grid-template-columns:1fr 1fr;gap:60px;padding:35px;border-radius:8px;margin-top:38px}.recovery p{font-size:14px;color:#43655b}.years{display:grid;grid-template-columns:repeat(3,1fr);align-content:center;gap:18px}.years strong{font:500 35px 'Manrope',sans-serif;letter-spacing:-1px;display:block;color:#225b48}.years span{font-size:13px;display:block}.years p{grid-column:1/-1;font-size:12px;margin:12px 0 0}.takeaway{border-left:3px solid var(--accent);background:#e3ecee;padding:24px 28px;margin-top:32px}.takeaway>span{font-size:12px;letter-spacing:1.5px;font-weight:700}.takeaway p{margin:8px 0 0;font-size:16px}.takeaway a{font-size:12px}.scenario-list{display:grid;gap:9px;margin:25px 0}.scenario-list button{border:1px solid var(--line);background:white;text-align:left;padding:14px 12px;border-radius:5px;font-size:14px;color:var(--ink)}.scenario-list button span{font-size:12px;margin-right:10px;color:var(--muted)}.scenario-list button.active{border-color:#426dad;background:#eaf0fc}.climate-visual{--flow:#a7c6ff}#climate-flow{padding:24px 20px;min-height:370px;display:flex;flex-direction:column;align-items:center;justify-content:center}.flow-node{max-width:460px;width:100%;padding:17px 22px;border:1px solid #446283;background:#182f45;border-radius:7px}.flow-node strong{display:block;color:#c5d9ff;font-size:20px;font-weight:500}.flow-node span{display:block;color:#b5c8d7;font-size:14px;line-height:1.5;margin-top:4px}.flow-arrow{color:#95b9f7;line-height:1.2;font-size:27px;padding:6px}.flow-split{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%}.flow-split .flow-node strong{font-size:17px}.flow-split .flow-node{padding:16px}.compare{margin-top:56px}.section-heading h2{font-size:29px}.section-heading .eyebrow{color:var(--muted);margin-bottom:10px}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;font-size:14px}th,td{padding:17px 18px;border-bottom:1px solid var(--line);vertical-align:top}thead th{font-size:12px;letter-spacing:.7px;color:var(--muted);font-weight:500;background:#e7eded}tbody th{font-weight:600}.reading{margin:40px 0 50px;padding-top:18px;border-top:1px solid var(--line)}details summary{cursor:pointer;list-style-position:outside;margin-left:18px;font-size:15px;color:var(--ink);font-weight:600;padding:8px 0}details p{margin-top:14px}.reading summary{display:flex;justify-content:space-between;margin:0;font-size:16px}.reading p,.reading li{font-size:14px;color:var(--muted)}.reading li{margin-bottom:12px}.reading ol{padding-left:22px}.reading a{color:var(--accent)}footer{border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding-top:25px;padding-bottom:30px}footer p{font-size:12px;color:var(--muted);margin:0}.skip{position:absolute;top:-100px;left:20px;background:white;padding:12px;z-index:5}.skip:focus{top:10px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.noscript{text-align:center;background:white;padding:15px}.uv-flow{stroke-dasharray:9 8;animation:travel 2.4s linear infinite}.flow{stroke-dasharray:8 6;animation:travel 3s linear infinite}.paused .uv-flow,.paused .flow{animation-play-state:paused}@keyframes travel{to{stroke-dashoffset:-68}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}@media(min-width:1450px){header,main,footer{max-width:1440px}}@media(max-width:1000px){header,main,footer{padding-inline:28px}.tab{padding:16px;gap:10px}.controls{padding:24px}.visual{padding:22px}.intro-right{max-width:290px}.lab{grid-template-columns:minmax(280px,1fr) minmax(0,1.3fr)}.under-grid{gap:32px}.recovery{gap:25px}.years strong{font-size:29px}.visual-top{font-size:10px;letter-spacing:.5px}.visual-bottom{flex-wrap:wrap}.visual svg{min-height:260px}}@media(max-width:760px){header,main,footer{padding-inline:20px}.top{height:84px}.brand{font-size:10px;letter-spacing:1px}.occasion{font-size:11px}.occasion span{font-size:11px;max-width:155px}.intro{display:block;padding:32px 0 24px}h1{font-size:40px;letter-spacing:-1.7px}.intro-right{max-width:100%;margin-top:20px}.intro-right p{font-size:14px}.intro-right br{display:none}.tabs{gap:6px}.tab{display:block;padding:12px 10px;font-size:13px;line-height:1.35}.tab-num{display:block;margin-bottom:8px;font-size:11px}.tab small{font-size:11px;margin-top:6px}.tab-symbol{display:none}.lab{grid-template-columns:1fr}.controls{padding:25px}h2{font-size:29px}.controls h2 br{display:none}.visual{padding:20px 14px}.visual svg{margin:10px 0;min-height:0}.visual-note{font-size:12px}.visual-top{font-size:11px}.under-grid{grid-template-columns:1fr;gap:10px;margin-top:15px}.under-grid article{margin-top:15px}.under-grid h3{font-size:22px}#step-content{min-height:120px}.recovery{grid-template-columns:1fr;padding:25px;gap:20px}.years strong{font-size:30px}.years{gap:10px}.compare{margin-top:40px}.section-heading h2{font-size:24px}th,td{padding:13px 12px;min-width:145px}th:first-child{min-width:135px}footer{align-items:start;gap:20px}footer .brand{max-width:180px}footer .logo{min-width:42px}footer p{max-width:120px}.flow-split{gap:8px}.flow-split .flow-node{padding:12px}#climate-flow{padding:24px 8px}.takeaway{padding:20px}.reading{margin-bottom:30px}}@media(max-width:370px){header,main,footer{padding-inline:14px}h1{font-size:35px}.top .brand>span:last-child{max-width:90px}.occasion span{max-width:130px}.tab{padding:10px 7px}.years strong{font-size:26px}}
