:root{--ink:#182e29;--green:#175e48;--mint:#d9eee4;--soft:#f2f5f1;--line:#d9e1da;--muted:#586960;--cream:#fafbf7}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--cream);font-family:Arial,Helvetica,sans-serif;color:var(--ink);font-size:16px;line-height:1.65}a{color:inherit;text-decoration:none}p{color:var(--muted)}h1,h2,h3{font-weight:500;line-height:1.1;letter-spacing:-.045em}h1{font-size:68px;margin:20px 0 28px}h2{font-size:42px;margin:14px 0 24px}h3{font-size:25px;letter-spacing:-.03em}.wrap{max-width:1240px;margin:auto;padding:0 42px}header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line)}.navwrap{max-width:1360px;margin:auto;display:flex;justify-content:space-between;align-items:center;height:100px;padding:0 42px}.brand{display:flex;gap:12px;align-items:center;font-size:16px;letter-spacing:.07em;line-height:1.18;font-weight:600;flex-shrink:0}.brand strong{color:var(--green)}.mark{position:relative;width:48px;height:53px;border:1.5px solid var(--green);border-radius:3px;color:var(--green);font-size:29px;line-height:57px;padding-left:8px;letter-spacing:-.04em}.mark small{position:absolute;font-size:9px;left:6px;top:5px;line-height:1}nav{display:flex;gap:26px;align-items:center}nav a{font-size:13px;font-weight:600}nav a:hover,.footer-nav a:hover{color:var(--green);text-decoration:underline;text-underline-offset:7px}nav a[aria-current=page]{color:var(--green);text-decoration:underline;text-underline-offset:7px}.menu{display:none}.hero{position:relative;min-height:610px;overflow:hidden}.hero-image{position:absolute;inset:0 0 0 25%;background:url(hero.webp) center center/cover no-repeat;mask-image:linear-gradient(to right,transparent 0%,#000 24%);-webkit-mask-image:linear-gradient(to right,transparent 0%,#000 24%)}.hero:after{content:'';position:absolute;inset:0;background:linear-gradient(to right,var(--cream) 0%,rgba(250,251,247,.96) 24%,rgba(250,251,247,.7) 40%,transparent 62%);pointer-events:none}.hero-content{position:relative;z-index:2;padding-top:45px;padding-bottom:66px}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--green);margin:0 0 16px}.hero h1{font-size:76px;line-height:.98;letter-spacing:-.06em;margin:20px 0 25px;max-width:570px}.hero h1 em{font-style:normal;color:var(--green)}.hero-content>p:not(.eyebrow){font-size:16px;max-width:450px;line-height:1.6;color:#3d5449}.actions{display:flex;gap:24px;align-items:center;margin-top:25px}.button{display:inline-flex;align-items:center;justify-content:center;gap:25px;border:1px solid var(--green);background:var(--green);color:white;padding:14px 20px;font-size:13px;font-weight:600;cursor:pointer;border-radius:2px;line-height:1.3;text-decoration:none}.button:hover{background:#0d4432;transform:translateY(-1px)}.button:disabled{background:#65796d;cursor:not-allowed;transform:none}.button.light{background:#e6f1e8;color:var(--ink);border-color:#e6f1e8}.button.outline{background:transparent;color:var(--green)}.text-link{font-size:13px;font-weight:600;color:var(--green)}.text-link:hover{text-decoration:underline}.hero-caption{position:absolute;bottom:20px;right:42px;font-size:9px;letter-spacing:.17em;color:#25483e;z-index:2;background:#ffffffc9;padding:6px 10px}.topicbar{background:#e9eee7;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.topicbar .wrap{display:flex;justify-content:space-between;gap:16px;padding-top:21px;padding-bottom:21px;font-size:12px;font-weight:600}.topicbar span:first-child{color:var(--green)}.section{padding-top:80px;padding-bottom:80px}.section-heading{display:flex;justify-content:space-between;align-items:end;gap:50px;margin-bottom:40px}.section-heading h2{margin-bottom:0}.section-heading>p{max-width:380px;margin-bottom:0;font-size:15px}.editorial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.feature{border-top:1px solid #9aafa1;padding:25px 0 10px}.feature p{font-size:14px}.number{font-size:10px;font-weight:700;letter-spacing:.12em;color:var(--green)}.arrow{display:block;color:var(--green);font-size:12px;font-weight:700;margin-top:24px}.mini-art{height:130px;margin:22px 0 26px;background:#e7eee4;overflow:hidden;position:relative}.strata{display:flex;align-items:end;padding:15px;gap:9px;background:linear-gradient(135deg,#d7e5df,#eef2e9)}.strata i{width:34%;height:65%;background:#87aa98;clip-path:polygon(0 40%,25% 0,100% 22%,100% 100%,0 100%)}.strata i:nth-child(2){height:98%;background:#618f7b}.strata i:nth-child(3){height:76%;background:#acbba0}.chemical{display:flex;justify-content:center;align-items:center;gap:24px;color:#25644e;font-size:26px;background:#e5eee7}.chemical span:last-child{font-size:20px;color:#628a72}.cells{display:flex;align-items:center;justify-content:center;gap:12px;background:linear-gradient(130deg,#e9efe2,#d6e8dd)}.cells i{width:26px;height:80px;background:linear-gradient(to right,#316a50,#83ac91,#316a50);border-radius:6px;box-shadow:0 5px 8px #254b4022}.planner-band{background:#e8eee5;padding:65px 0}.split,.two{display:grid;grid-template-columns:1fr 1fr;gap:70px}.split p{max-width:430px;font-size:15px}.split .button{margin-top:20px}.calculator-preview{background:#fafbf7;border:1px solid #cbd9cc;padding:28px 34px;align-self:center;box-shadow:0 20px 36px #21492d09}.preview-top{display:flex;justify-content:space-between;gap:20px;font-size:9px;letter-spacing:.08em;color:var(--green)}.preview-top span{text-transform:none;font-size:10px;letter-spacing:0}.capacity{font-size:58px;letter-spacing:-.05em;line-height:1.2;margin-top:20px}.capacity small{font-size:15px;color:var(--muted);letter-spacing:0}.formula-line{font-size:12px;border-bottom:1px solid var(--line);padding:5px 0 20px;color:var(--muted)}.result-preview{color:var(--green);font-size:47px;letter-spacing:-.04em;margin-top:18px}.result-preview small{font-size:14px;letter-spacing:0}.calculator-preview p{font-size:11px;margin:8px 0 0}.research-rows>a{display:flex;gap:45px;align-items:center;border-top:1px solid var(--line);padding:30px 0}.research-rows>a:last-child{border-bottom:1px solid var(--line)}.research-rows span{min-width:120px;font-size:23px;color:var(--green)}.research-rows small{font-size:9px;letter-spacing:.07em}.research-rows h3{margin:0 0 12px}.research-rows p{font-size:13px;margin:0}.research-rows b{margin-left:auto;font-weight:400;font-size:28px}.directory-teaser{padding-top:10px;padding-bottom:70px;display:flex;justify-content:space-between;align-items:center;gap:40px}.directory-teaser p{max-width:560px;font-size:14px}.cta{display:flex;justify-content:space-between;align-items:center;background:#194c3a;padding:45px 50px;margin-bottom:70px;color:white}.cta h2{font-size:37px;margin-bottom:0}.cta .eyebrow{color:#bbd7bc}.intro{padding-top:65px;padding-bottom:48px;border-bottom:1px solid var(--line)}.intro h1{max-width:900px}.lede{max-width:740px;font-size:19px;line-height:1.6}.content-section{padding-top:65px;padding-bottom:65px}.tint{background:#eaf0e6}.readable,.narrow{max-width:930px}.narrow h2{font-size:30px;margin-top:40px}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;background:#f9fbf7}td,th{padding:20px;border-bottom:1px solid var(--line);font-size:14px}th{font-size:12px;color:var(--green)}.source{display:inline-block;color:var(--green);font-size:12px;text-decoration:underline;text-underline-offset:4px}.reading{padding:28px 0;border-bottom:1px solid #c8d6c8}.reading h3{margin:12px 0}.sources li{padding:10px}.sources a{text-decoration:underline}.sources small{display:block;color:var(--muted);font-size:12px}.filters{display:flex;gap:30px;background:#eaf0e6;padding:25px}.filters label{flex:1}.directory-row{padding:30px 0;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:30px}.directory-row h2{font-size:29px;margin:8px 0}.directory-row p{margin:0}.tag{font-size:11px;color:var(--green);text-transform:uppercase;letter-spacing:.1em}label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:20px}input,select,textarea{display:block;width:100%;margin-top:8px;background:#fff;border:1px solid #a5b8aa;padding:13px;font:inherit;color:var(--ink);border-radius:2px}input:focus,textarea:focus,select:focus{outline:2px solid #4d8e6a;outline-offset:2px}.filters label{margin:0}.planner-layout{display:grid;grid-template-columns:1fr 1fr;gap:60px}.planner-output{background:#194c3a;color:white;padding:40px;align-self:start}.planner-output h2{font-size:56px}.planner-output h2 small{display:block;font-size:18px;letter-spacing:0;margin-top:8px}.planner-output .eyebrow,.planner-output p{color:#d1e6d3}.planner-output p{font-size:13px}.rule{border-top:1px solid #ffffff40;margin:25px 0}.reset{background:none;border:0;text-decoration:underline;color:var(--green);cursor:pointer;padding:18px;font-size:12px}.notice{border-left:3px solid #729981;padding:15px 20px;background:#eaf0e6;font-size:14px}.check{display:flex;align-items:start;gap:10px;font-weight:400;font-size:12px}.check input{width:18px;flex:none;margin-top:4px}.check a{text-decoration:underline}.honey{position:absolute;left:-9999px}.skip{position:absolute;top:-100px;z-index:200;background:white;padding:15px}.skip:focus{top:0}button,a,input,select,textarea{touch-action:manipulation}a:focus-visible,button:focus-visible{outline:3px solid #3f8869;outline-offset:5px}footer{background:#e9eee7;padding:45px 0 0}.footer-top{display:flex;justify-content:space-between;align-items:center;gap:30px}.footer-top p{font-size:12px;margin:0}.footer-nav{display:flex;gap:28px;padding-top:35px;padding-bottom:30px;font-size:12px}.footnote{border-top:1px solid #cbd8cb;padding-top:20px;padding-bottom:25px;display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted)}[hidden]{display:none!important}
@media(min-width:1600px){.hero{min-height:660px}.hero-content{padding-top:65px}}
@media(max-width:1050px){.navwrap{padding:0 26px}nav{gap:17px}.brand{font-size:14px}.wrap{padding-left:30px;padding-right:30px}.hero h1{font-size:68px}.hero{min-height:590px}.hero-content{padding-top:50px}.split,.two{gap:40px}.hero-content>p:not(.eyebrow){max-width:370px}.actions{gap:16px}}
@media(max-width:800px){.navwrap{height:82px}.menu{display:flex;gap:12px;background:none;border:0;color:var(--green);padding:10px;font-size:13px}nav{display:none;position:absolute;top:82px;left:0;right:0;background:white;padding:20px 30px;box-shadow:0 8px 12px #0001;flex-direction:column;align-items:start}nav.open{display:flex}nav a{padding:7px 0}.brand{font-size:13px}.mark{width:40px;height:44px;line-height:48px;font-size:25px}.hero h1{font-size:65px}.hero-image{left:10%}.hero:after{background:linear-gradient(to right,#fafbf7 0%,#fafbf7e0 35%,#fafbf750 76%,transparent)}.hero-caption{right:20px;font-size:8px}.hero-content{padding-top:48px}.section-heading{display:block}.section-heading>p{max-width:100%;margin-top:20px}.section-heading>a{display:block;margin-top:20px}.editorial-grid{gap:22px}.mini-art{height:105px}.chemical{font-size:20px;gap:12px}.chemical span:last-child{font-size:15px}.two,.split,.planner-layout{grid-template-columns:1fr}.topicbar .wrap{flex-wrap:wrap;font-size:10px;justify-content:start;gap:12px 24px}.topicbar span:first-child{width:100%}.section{padding-top:55px;padding-bottom:55px}h2{font-size:35px}.intro h1{font-size:52px}.cta{margin:0 25px 50px;padding:30px;gap:30px}.cta h2{font-size:29px}.footer-nav{flex-wrap:wrap;gap:16px 24px}.footer-top{align-items:start}.footnote{flex-direction:column;gap:8px}.research-rows>a{gap:25px}.research-rows span{min-width:90px}}
@media(max-width:560px){.wrap{padding-left:24px;padding-right:24px}.navwrap{padding:0 22px}.hero{min-height:750px}.hero-content{padding-top:33px;padding-bottom:300px}.hero .eyebrow{font-size:9px;letter-spacing:.12em}.hero h1{font-size:62px;margin:20px 0}.hero-content>p:not(.eyebrow){font-size:14px;max-width:330px}.desktop{display:none}.hero-image{inset:310px 0 0 0;background-position:68% center;mask-image:linear-gradient(to bottom,transparent,#000 30%);-webkit-mask-image:linear-gradient(to bottom,transparent,#000 30%)}.hero:after{background:linear-gradient(to bottom,#fafbf7 0%,#fafbf7 44%,#fafbf7cc 57%,transparent 76%)}.hero-caption{bottom:14px;right:12px;left:12px;text-align:center}.actions{flex-wrap:wrap;gap:19px}.button{padding:13px 16px}.editorial-grid{grid-template-columns:1fr;gap:30px}.feature{padding-bottom:0}.mini-art{height:125px}.feature h3{margin:18px 0 10px}.feature .arrow{margin-top:16px}.section-heading{margin-bottom:30px}.section-heading h2{font-size:34px}.section-heading>p{font-size:14px}.split{gap:35px}.calculator-preview{padding:24px}.preview-top{font-size:8px;gap:8px}.capacity{font-size:50px}.result-preview{font-size:44px}.research-rows>a{gap:18px;align-items:start}.research-rows h3{font-size:23px}.research-rows span{min-width:75px;font-size:18px}.research-rows small{font-size:8px;letter-spacing:0}.research-rows p{font-size:12px}.directory-teaser{display:block;padding-top:0;padding-bottom:45px}.directory-teaser .button{margin-top:12px}.directory-teaser h2{font-size:34px}.cta{display:block;margin-left:18px;margin-right:18px;padding:30px 25px}.cta .button{margin-top:30px}.footer-top{display:block}.footer-top p{margin-top:25px}.footer-nav{font-size:11px}.intro{padding-top:40px;padding-bottom:30px}.intro h1{font-size:43px}.lede{font-size:16px}.two{gap:35px}.planner-output{padding:28px}.planner-output h2{font-size:48px}.filters{display:block;padding:20px}.filters label+label{margin-top:20px}.directory-row{display:block}.directory-row .text-link{display:inline-block;margin-top:20px}.directory-row h2{font-size:27px}.directory-row p{font-size:14px}.narrow h2{font-size:27px}.content-section{padding-top:40px;padding-bottom:40px}td,th{padding:14px;font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}