@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--ink:#153c38;--muted:#58716c;--paper:#f5f7f2;--white:#fff;--line:#dbe5dd;--green:#176b58;--lime:#d6efb7;--blue:#dcefeb;--serif:Manrope,Arial,sans-serif;--sans:'DM Sans',Arial,sans-serif;--max:1160px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 var(--sans)}a{color:inherit}img,svg{max-width:100%}.wrap{width:min(var(--max),calc(100% - 48px));margin:auto}.topline{font-size:12px;color:#d9eee3;background:#163d38;padding:8px 0}.topline .wrap{display:flex;justify-content:space-between;gap:14px}.topline a{color:inherit}.header{background:var(--paper);border-bottom:1px solid var(--line)}.nav{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;font:800 16px var(--serif);letter-spacing:-.5px}.brand-logo{display:block;width:228px;height:auto}.brand-mark{width:36px;height:36px;border-radius:12px;background:var(--green);display:grid;place-items:center;color:white}.brand-mark svg{width:22px}.navlinks{display:flex;gap:28px;align-items:center;font-size:14px;font-weight:600}.navlinks a{text-decoration:none}.navlinks a:hover,.text-link:hover{color:var(--green);text-decoration:underline}.nav-cta,.button{display:inline-flex;align-items:center;justify-content:center;background:var(--green);color:white;border:0;border-radius:999px;padding:12px 19px;text-decoration:none;font:600 14px var(--sans);transition:transform .18s,background .18s}.nav-cta:hover,.button:hover{background:#0e5445;transform:translateY(-1px)}.hero{padding:78px 0 76px;overflow:hidden;background:radial-gradient(ellipse at 83% 26%,#d9ecda 0,transparent 38%),var(--paper)}.hero-grid{display:grid;grid-template-columns:1.07fr .93fr;gap:56px;align-items:center}.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:12px;font-weight:700;letter-spacing:1.25px;text-transform:uppercase}.eyebrow:before{content:'';width:20px;height:1px;background:currentColor}.hero h1,.page-hero h1{font:700 clamp(42px,5.4vw,70px)/1.07 var(--serif);letter-spacing:-3.6px;margin:18px 0 22px;max-width:660px}.hero h1 em{font-style:normal;color:var(--green)}.hero-copy{font-size:18px;line-height:1.7;color:var(--muted);max-width:580px}.hero-actions{display:flex;align-items:center;gap:18px;margin-top:30px}.text-link{font-size:14px;font-weight:600;text-decoration:none}.hero-note{font-size:12px;color:var(--muted);margin-top:22px}.water-illustration{position:relative;min-height:370px;border-radius:28px;background:#e5f0e8;display:grid;place-items:center;overflow:hidden}.water-illustration:before,.water-illustration:after{content:'';position:absolute;border:1px solid #b8d7ca;border-radius:50%;width:360px;height:360px}.water-illustration:after{width:480px;height:480px}.drop{z-index:1;width:min(245px,60%);filter:drop-shadow(0 20px 15px #345b4220)}.stat-pill{position:absolute;z-index:2;background:white;border:1px solid var(--line);border-radius:16px;padding:13px 16px;box-shadow:0 12px 35px #163d3810;font-size:12px;color:var(--muted)}.stat-pill strong{display:block;font:700 20px var(--serif);color:var(--ink)}.pill-a{left:20px;top:45px}.pill-b{right:20px;bottom:43px}.section{padding:80px 0}.section-white{background:#fff}.section-head{display:flex;justify-content:space-between;align-items:end;gap:26px;margin-bottom:32px}.section-head h2{margin:9px 0 0;font:700 clamp(29px,3.4vw,42px)/1.15 var(--serif);letter-spacing:-1.6px}.section-head p{max-width:400px;color:var(--muted);margin:0}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:25px;display:flex;flex-direction:column;min-height:250px;text-decoration:none;transition:transform .18s,box-shadow .18s}.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px #173c3810}.card .number{font:700 12px var(--serif);color:#6f9183}.card h3{font:700 21px/1.25 var(--serif);letter-spacing:-.5px;margin:29px 0 10px}.card p{color:var(--muted);font-size:14px;margin:0 0 23px}.card .text-link{margin-top:auto;color:var(--green)}.callout{padding:40px 44px;border-radius:22px;background:#e7f0e6;display:grid;grid-template-columns:1fr auto;align-items:center;gap:32px}.callout h2{font:700 29px/1.2 var(--serif);margin:0 0 9px;letter-spacing:-1px}.callout p{margin:0;color:var(--muted);max-width:650px}.disclaimer{font-size:12px;color:var(--muted);border-left:3px solid #a4c6b4;padding:10px 0 10px 15px;margin-top:25px}.footer{background:#163d38;color:#d9eee3;padding:42px 0 24px}.footer-grid{display:flex;justify-content:space-between;gap:32px}.footer p{max-width:420px;color:#afc9bf;font-size:13px}.footer-links{display:flex;gap:22px;align-items:flex-start;font-size:13px}.footer-links a{color:inherit}.copyright{border-top:1px solid #ffffff25;padding-top:18px;margin-top:30px;color:#afc9bf;font-size:11px}.page-hero{padding:68px 0 48px;background:radial-gradient(ellipse at 85% 25%,#dceee3 0,transparent 35%),var(--paper)}.page-hero h1{font-size:clamp(38px,5vw,60px);max-width:850px}.page-hero p{max-width:700px;color:var(--muted);font-size:18px}.article-layout{display:grid;grid-template-columns:minmax(0,760px) 250px;gap:72px;padding:38px 0 90px}.article h2{font:700 28px/1.25 var(--serif);letter-spacing:-.8px;margin:43px 0 14px}.article h3{font:700 19px/1.3 var(--serif);margin:28px 0 8px}.article p,.article li{color:#405c56}.article ul,.article ol{padding-left:22px}.article li{padding:4px 0}.article a{color:#176b58}.article blockquote{border-left:3px solid #80ad97;margin:24px 0;padding:7px 0 7px 18px;color:#325e50}.source-box{background:#f1f6f1;border:1px solid var(--line);border-radius:14px;padding:20px;margin:24px 0}.source-box h3{margin-top:0}.source-box li{font-size:14px}.sidebar{position:sticky;top:20px;align-self:start;border:1px solid var(--line);border-radius:14px;padding:18px;background:#fff;font-size:13px}.sidebar strong{display:block;margin-bottom:8px}.sidebar a{display:block;padding:5px 0;text-decoration:none;color:var(--muted)}.updated{font-size:12px;color:#6d8980}.footnote{font-size:13px;color:var(--muted)}@media(max-width:800px){.wrap{width:min(100% - 34px,var(--max))}.navlinks{gap:15px}.navlinks a:not(.nav-cta){display:none}.hero{padding:53px 0}.hero-grid{grid-template-columns:1fr;gap:32px}.hero h1{letter-spacing:-2.3px}.water-illustration{min-height:300px}.section{padding:60px 0}.section-head{display:block}.section-head p{margin-top:14px}.cards{grid-template-columns:1fr}.card{min-height:205px}.callout{grid-template-columns:1fr;padding:28px}.article-layout{grid-template-columns:1fr;gap:25px}.sidebar{position:static;order:-1}.footer-grid{display:block}.footer-links{flex-wrap:wrap;margin-top:22px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media(max-width:480px){.brand-logo{width:185px}}
.table-scroll{overflow-x:auto;margin:24px 0;border:1px solid var(--line);border-radius:14px;background:#fff}.comparison-table{width:100%;min-width:680px;border-collapse:collapse;font-size:14px;line-height:1.55}.comparison-table caption{padding:15px 18px;text-align:left;color:var(--muted);font-size:13px}.comparison-table th,.comparison-table td{padding:14px 16px;text-align:left;vertical-align:top;border-top:1px solid var(--line)}.comparison-table thead th{background:#e7f0e6;color:var(--ink);font-weight:700}.comparison-table tbody th{width:150px;color:var(--ink);font-weight:700}.comparison-table td{color:#405c56}
.finder{margin:26px 0;padding:24px;background:#eaf2eb;border:1px solid #cddfd1;border-radius:18px}.finder h3{margin:0 0 8px}.finder p{font-size:14px}.finder label{display:block;font-size:13px;font-weight:700;margin:16px 0 7px}.finder-controls{display:flex;gap:10px;flex-wrap:wrap}.finder select{min-width:min(100%,300px);padding:11px 13px;border:1px solid #b8cbc0;border-radius:10px;background:white;color:var(--ink);font:14px var(--sans)}.finder .button{cursor:pointer}.finder-results{margin-top:16px}.finder-hint{margin:0;padding:14px;background:white;border-radius:10px}.finder-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}.finder-card{padding:17px;background:white;border:1px solid var(--line);border-radius:12px}.finder-card h4{font:700 16px/1.3 var(--serif);margin:0 0 9px}.finder-card p{font-size:13px;margin:8px 0;color:#405c56}.finder-card .finder-status{font-size:11px;text-transform:uppercase;letter-spacing:.7px;color:#58716c;font-weight:700}.finder-card a{font-size:13px}.finder-note{font-size:12px;color:#58716c;margin-top:13px!important}
@media(max-width:480px){.finder{padding:17px}.finder-controls{display:grid}.finder select,.finder .button{width:100%}}
.converter{margin:28px 0;padding:24px;background:#eaf2eb;border:1px solid #cddfd1;border-radius:18px}.converter h3{margin:0 0 8px}.converter p{font-size:14px}.converter label{display:block;font-size:13px;font-weight:700;margin:14px 0 6px}.converter input,.converter select{display:block;width:min(100%,420px);padding:11px 13px;border:1px solid #b8cbc0;border-radius:10px;background:white;color:var(--ink);font:15px var(--sans)}.converter .button{margin-top:16px;cursor:pointer}.converter-result{min-height:26px;font-weight:700;color:var(--ink);margin-bottom:4px}.converter-note{font-size:12px!important;color:var(--muted);margin-bottom:0}
@media(max-width:480px){.converter{padding:17px}.converter input,.converter select{width:100%}}