:root{
  --green:#0b6b4f;--green-2:#15916d;--deep:#073f32;--mint:#e9f7f1;--cream:#f7fbf8;
  --ink:#17312a;--muted:#63746e;--white:#fff;--shadow:0 18px 50px rgba(5,50,38,.10);
  --radius:24px;--container:1160px
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#fff;line-height:1.65}
a{text-decoration:none;color:inherit}
.container{width:min(calc(100% - 40px),var(--container));margin:auto}
.site-header{position:fixed;z-index:50;top:0;left:0;width:100%;background:rgba(255,255,255,.88);backdrop-filter:blur(16px);border-bottom:1px solid rgba(11,107,79,.08)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;color:var(--deep)}
.brand-mark{width:42px;height:42px;display:grid;place-items:center;border-radius:14px;background:var(--mint);font-size:24px}
.brand strong,.brand small{display:block;line-height:1.05}.brand small{font-size:12px;color:var(--green-2);margin-top:4px;letter-spacing:.08em;text-transform:uppercase}
.nav{display:flex;align-items:center;gap:25px;font-size:14px;font-weight:700}.nav a{color:#47625a}.nav a:hover{color:var(--green)}.nav-cta{padding:11px 17px;border-radius:999px;background:var(--green);color:#fff!important}
.menu-toggle{display:none;border:0;background:none;font-size:27px;color:var(--deep)}
.hero{min-height:760px;padding:150px 0 100px;position:relative;overflow:hidden;background:linear-gradient(135deg,#effbf5 0%,#fff 56%,#e9f7f1 100%)}
.hero-bg{position:absolute;width:700px;height:700px;border-radius:50%;right:-250px;top:80px;background:radial-gradient(circle,rgba(21,145,109,.13),transparent 67%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:50px;position:relative;z-index:2}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;margin-bottom:16px}
.hero h1{font-size:clamp(44px,6vw,74px);line-height:1.03;letter-spacing:-.045em;color:var(--deep);max-width:700px}.hero h1 span{color:var(--green-2)}
.lead{font-size:19px;color:var(--muted);max-width:650px;margin:25px 0}.hero-quote{font-weight:800;color:var(--green);font-size:17px}
.hero-actions{display:flex;gap:13px;margin-top:30px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:999px;font-weight:800}.btn-primary{background:var(--green);color:#fff;box-shadow:0 10px 25px rgba(11,107,79,.2)}.btn-light{background:#fff;border:1px solid #d9ebe4;color:var(--green)}
.hero-art{height:500px;position:relative;display:grid;place-items:center}.earth{width:230px;height:230px;border-radius:50%;display:grid;place-items:center;font-size:150px;background:#dff5ec;box-shadow:0 35px 90px rgba(11,107,79,.2);animation:float 5s ease-in-out infinite}.earth-orbit{position:absolute;border:1px solid rgba(21,145,109,.22);border-radius:50%}.orbit-1{width:350px;height:350px}.orbit-2{width:460px;height:210px;transform:rotate(-28deg)}
.floating-card{position:absolute;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);padding:15px 18px;border-radius:18px;box-shadow:var(--shadow);display:grid;grid-template-columns:auto 1fr;column-gap:10px;align-items:center}.floating-card:first-letter{font-size:24px}.floating-card b{font-size:14px}.floating-card small{grid-column:2;color:var(--muted);font-size:11px}.card-a{top:60px;right:20px}.card-b{left:5px;bottom:105px}.card-c{right:0;bottom:40px}
.wave{position:absolute;bottom:-1px;left:0;width:100%;height:70px;background:#fff;clip-path:ellipse(65% 65% at 50% 100%)}
.section{padding:105px 0}.tint{background:var(--cream)}.dark{background:var(--deep);color:#fff}.section-heading{text-align:center;max-width:760px;margin:0 auto 52px}.section-heading h2{font-size:clamp(34px,4vw,52px);line-height:1.08;letter-spacing:-.035em;margin-bottom:15px;color:var(--deep)}.section-heading p{color:var(--muted)}.section-heading.light h2{color:#fff}.section-heading.light p{color:#bad3cb}
.cards.three{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}.issue-card{padding:32px;background:#fff;border:1px solid #e4f0eb;border-radius:var(--radius);box-shadow:var(--shadow);transition:.3s}.issue-card:hover,.solution:hover,.institution:hover,.fact:hover{transform:translateY(-6px)}.icon{width:64px;height:64px;border-radius:19px;display:grid;place-items:center;font-size:31px;margin-bottom:25px;background:var(--mint)}.issue-card h3{font-size:22px;margin-bottom:10px}.issue-card p{color:var(--muted)}.card-line{display:block;width:45px;height:4px;background:var(--green-2);border-radius:9px;margin-top:24px}
.why-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;align-items:center}.why-visual{min-height:420px;border-radius:32px;background:linear-gradient(145deg,#dff6eb,#a8e2cd);display:grid;place-items:center;box-shadow:var(--shadow);overflow:hidden}.leaf-scene{text-align:center;font-size:95px;line-height:.9}.leaf-scene span{font-size:29px;font-weight:900;line-height:1.05;color:var(--deep)}.why-grid h2{font-size:clamp(34px,4vw,51px);line-height:1.08;letter-spacing:-.04em}.large{font-size:18px;color:var(--muted);margin:22px 0}.mini-points{display:grid;gap:15px}.mini-points div{padding:16px 18px;border-left:4px solid var(--green-2);background:#fff;border-radius:0 15px 15px 0;box-shadow:0 8px 25px rgba(0,0,0,.04)}.mini-points b,.mini-points span{display:block}.mini-points span{color:var(--muted);font-size:14px}
.institution-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.institution{padding:28px;border:1px solid #e2eee9;border-radius:22px;transition:.3s}.institution strong{font-size:25px;color:var(--green)}.institution p{font-size:14px;color:var(--muted);margin:12px 0 20px}.institution span{font-size:12px;font-weight:800;color:var(--green)}
.cause-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.cause{display:flex;gap:20px;padding:24px;border:1px solid rgba(255,255,255,.12);border-radius:20px;background:rgba(255,255,255,.05)}.cause>span{font-size:34px}.cause h3{margin-bottom:4px}.cause p{color:#b7d0c8;font-size:14px}
.solution-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}.solution{border:1px solid #e3efe9;border-radius:26px;padding:30px;background:#fff;transition:.3s;box-shadow:0 10px 30px rgba(5,50,38,.04)}.solution:last-child{grid-column:1/-1}.solution-icon{font-size:35px}.solution h3{font-size:23px;margin:10px 0}.solution ul{padding-left:19px;color:var(--muted);font-size:14px}.solution li{margin:5px 0}.solution blockquote{margin-top:18px;color:var(--green);font-weight:800;font-size:14px}
.effects{background:linear-gradient(180deg,#f7fbf8,#fff)}.effect-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}.effect{display:flex;gap:17px;padding:21px;border:1px solid #e5eee9;border-radius:18px;background:#fff}.effect>span{font-size:30px}.effect h3{font-size:17px}.effect p{font-size:13px;color:var(--muted)}.big-quote{text-align:center;font-size:24px;font-weight:900;color:var(--green);margin-top:55px}
.facts{background:var(--cream)}.fact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.fact{padding:23px;background:#fff;border:1px solid #e5eee9;border-radius:20px;display:flex;gap:14px;transition:.3s}.fact span{font-size:28px}.fact p{font-size:14px;color:#52665f}.fact-quote{text-align:center;margin-top:45px;font-size:25px;font-weight:900;color:var(--deep)}
.action{background:#fff}.action-box{background:linear-gradient(135deg,var(--deep),var(--green));border-radius:35px;padding:55px;display:grid;grid-template-columns:1fr 1fr;gap:50px;color:#fff;box-shadow:0 25px 70px rgba(7,63,50,.22)}.action-copy .eyebrow{color:#a9ead5}.action-copy h2{font-size:50px;line-height:1.05;margin-bottom:15px}.action-copy p{color:#c7ddd6}.action-list{display:flex;flex-wrap:wrap;align-content:center;gap:12px}.action-list span{padding:13px 16px;border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.08);border-radius:999px;font-weight:800;font-size:14px}
.comparison{display:grid;grid-template-columns:1fr 1fr;min-height:390px}.comparison-half{display:grid;place-items:center;text-align:center;padding:60px;position:relative;overflow:hidden}.comparison-half:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at center,rgba(255,255,255,.22),transparent 55%)}.comparison-half>div{position:relative;z-index:1;max-width:400px}.clean{background:linear-gradient(135deg,#9fe0bd,#4fbf8e);color:#073f32}.polluted{background:linear-gradient(135deg,#53605c,#222d2a);color:#fff}.comparison-half span{font-size:55px}.comparison-half h2{font-size:38px;margin:8px 0}.comparison-half p{opacity:.82}
.footer{background:#052f27;color:#b8d2ca;padding:70px 0 25px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:60px}.footer-brand{color:#fff;margin-bottom:18px}.footer p{max-width:390px;font-size:14px}.footer h4{color:#fff;margin-bottom:14px}.footer-grid>div>a:not(.brand){display:block;font-size:14px;margin:8px 0}.footer-grid>div>a:not(.brand):hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:45px;padding-top:20px;display:flex;justify-content:space-between;font-size:12px}
.back-top{position:fixed;right:20px;bottom:20px;width:45px;height:45px;border:0;border-radius:50%;background:var(--green);color:#fff;font-size:20px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.3s}.back-top.show{opacity:1;pointer-events:auto}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .7s ease,transform .7s ease}.reveal.visible{opacity:1;transform:none}
@keyframes float{50%{transform:translateY(-12px)}}
@media(max-width:900px){.nav{gap:13px;font-size:12px}.hero-grid,.why-grid,.action-box{grid-template-columns:1fr}.hero{padding-top:125px}.hero-art{height:420px}.institution-grid{grid-template-columns:repeat(2,1fr)}.cards.three{grid-template-columns:1fr}.fact-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.container{width:min(calc(100% - 28px),var(--container))}.nav{position:absolute;top:78px;left:14px;right:14px;background:#fff;border-radius:18px;padding:15px;display:none;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}.nav.open{display:flex}.nav a{padding:9px 10px}.menu-toggle{display:block}.hero{min-height:auto;padding-bottom:80px}.hero-art{transform:scale(.82);margin:-20px -40px}.section{padding:78px 0}.institution-grid,.cause-grid,.solution-grid,.effect-list,.fact-grid,.footer-grid{grid-template-columns:1fr}.solution:last-child{grid-column:auto}.action-box{padding:32px 25px}.action-copy h2{font-size:39px}.comparison{grid-template-columns:1fr}.comparison-half{min-height:310px}.footer-bottom{flex-direction:column;gap:8px}.hero h1{font-size:45px}.section-heading{margin-bottom:35px}}