@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:#163b31;--dark:#092d25;--forest:#16694e;--leaf:#329b6b;--lime:#d5ee9c;--paper:#f7f9f3;--white:#fff;--muted:#60786d;--line:#dce7dd;--sand:#f4edde;--amber:#dda46a}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.68 'DM Sans',sans-serif}a{color:inherit}img{max-width:100%}button,input{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid #d49c5b;outline-offset:4px}h1,h2,h3,h4{font-family:'Manrope',sans-serif;letter-spacing:-.045em;line-height:1.15;margin:0}h1{font-size:clamp(3.3rem,7vw,6.6rem)}h2{font-size:clamp(2.2rem,4.4vw,4.1rem)}h3{font-size:1.34rem}p{margin:0}.shell{width:min(1170px,calc(100% - 48px));margin:auto}.skip{position:absolute;top:-150px;left:16px;padding:12px;background:white;z-index:99}.skip:focus{top:12px}.preview{background:#eaf4e7;border-bottom:1px solid #d8e9d8;text-align:center;padding:6px 16px;color:#486b54;font-size:.73rem}.preview strong{color:#216447}.header{position:sticky;top:0;background:rgba(248,250,244,.95);backdrop-filter:blur(14px);border-bottom:1px solid #dce7dd;z-index:20}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:22px;min-height:84px}.brand{display:flex;align-items:center;gap:11px;text-decoration:none;min-width:178px}.brand img{width:43px;height:43px}.brand b{font:800 1.3rem/1 'Manrope',sans-serif;letter-spacing:-.07em}.brand small{display:block;font-size:.62rem;color:var(--muted);letter-spacing:.17em;text-transform:uppercase;margin-top:6px}.nav{display:flex;align-items:center;gap:clamp(10px,1.5vw,23px)}.nav a{text-decoration:none;font-size:.81rem;font-weight:700;color:#526b5d;white-space:nowrap}.nav a:hover,.nav a[aria-current=page]{color:var(--forest)}.nav a.nav-cta{background:var(--dark);color:#fff;border-radius:100px;padding:13px 17px}.nav a.nav-cta:hover{background:var(--forest)}.menu{display:none;border:1px solid #cbdfcd;border-radius:12px;padding:9px 13px;background:white;color:var(--dark);font-weight:800}.hero{background:linear-gradient(148deg,#f8faf5 8%,#e9f1e5 95%);overflow:hidden;position:relative}.hero:before{position:absolute;content:"";width:730px;height:730px;border:1px solid #dfebdd;border-radius:50%;top:-370px;right:-350px;box-shadow:0 0 0 110px rgba(61,138,94,.025),0 0 0 220px rgba(61,138,94,.025)}.hero-grid{min-height:660px;display:grid;grid-template-columns:1.12fr .88fr;align-items:center;gap:45px;padding:68px 0 95px}.eyebrow{color:#24815b;font-weight:800;font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;display:flex;align-items:center;gap:10px}.eyebrow:before{content:"";width:23px;height:2px;background:#4ab789}.hero h1{margin:22px 0 24px}.hero h1 em{font-style:normal;color:#348a60}.lead{color:#547368;font-size:1.13rem;max-width:620px;line-height:1.85}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:29px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:13px;background:white;padding:14px 21px;border-radius:100px;border:1px solid #d1e1d3;font-weight:800;font-size:.89rem;text-decoration:none;transition:transform .2s,background .2s}.btn:hover{transform:translateY(-2px)}.btn.primary{background:var(--dark);color:white;border-color:var(--dark)}.btn.primary:hover{background:var(--forest)}.btn.outline{background:transparent;border-color:#a6c5b1;color:#1d694d}.small-note{font-size:.77rem;color:#759081;margin-top:23px}.orb-scene{height:485px;display:grid;place-items:center;position:relative}.orb{aspect-ratio:1;width:min(100%,440px);border:1px solid #b1d1b7;border-radius:50%;background:radial-gradient(circle at 50% 50%,#b0dfbe 0,#d7efc9 43%,transparent 43%);position:relative;box-shadow:0 0 0 50px rgba(60,148,92,.055),0 0 0 110px rgba(60,148,92,.025)}.orb:before,.orb:after{content:"";position:absolute;inset:44px;border:1px dashed #a7cbae;border-radius:50%}.orb:after{inset:92px;border-style:solid;border-color:#afd7b7}.orb-core{position:absolute;inset:33%;display:grid;place-items:center;background:#176849;border-radius:50%;box-shadow:0 18px 34px #215b3a40;color:#d9f4b1;font-size:5.8rem}.float{position:absolute;padding:12px 16px;background:#ffffffec;border:1px solid #dce8da;border-radius:17px;box-shadow:0 18px 45px #103c301c;font-weight:800;font-size:.76rem;line-height:1.35;z-index:2}.float small{display:block;color:#738a7c;font-size:.68rem;font-weight:500;margin-top:4px}.float.one{top:7%;left:-2%}.float.two{right:-8%;top:42%}.float.three{bottom:8%;left:0}.band{background:#0e3c2f;color:#dceee0;padding:22px 0}.band-inner{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}.band .label{font-size:.71rem;color:#a2d9b4;text-transform:uppercase;letter-spacing:.14em;font-weight:800}.band-items{display:flex;gap:13px 32px;flex-wrap:wrap;font-size:.86rem;font-weight:700}.band-items span:before{content:"✦";color:#92d8a6;margin-right:12px}.section{padding:98px 0}.section.alt{background:#edf3e9}.section.dark{background:var(--dark);color:#eaffec}.section-head{display:flex;justify-content:space-between;align-items:end;gap:35px;margin-bottom:40px}.section-head .eyebrow{margin-bottom:15px}.section-head p{max-width:480px;color:var(--muted)}.dark .section-head p,.dark .lead{color:#bdd7c7}.grid{display:grid;gap:19px}.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.card{border:1px solid var(--line);background:white;border-radius:22px;padding:28px;min-height:225px;transition:transform .2s,box-shadow .2s}.card:hover{transform:translateY(-3px);box-shadow:0 15px 35px #144c3211}.card .icon{display:grid;place-items:center;width:54px;height:54px;border-radius:16px;background:#e5f5e6;font-size:1.6rem;color:#23734e;margin-bottom:24px}.card h3{margin-bottom:12px}.card p{color:var(--muted);font-size:.92rem}.card a{display:inline-flex;margin-top:21px;font-size:.85rem;color:var(--forest);font-weight:800;text-decoration:none}.card a:hover{text-decoration:underline}.number{font-size:.74rem;font-weight:800;color:#68a88b;letter-spacing:.12em}.feature{background:#dcf0dd;border-radius:28px;min-height:380px;padding:35px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden}.feature.sand{background:#f2eadb}.feature.deep{background:#155140;color:white}.feature h3{font-size:clamp(1.7rem,3vw,2.6rem)}.feature p{color:#5d7969;margin-top:16px}.feature.deep p{color:#c7e3d1}.feature .glyph{font-size:7rem;align-self:end;opacity:.28;line-height:1}.feature a{font-size:.86rem;font-weight:800;text-decoration:none}.feature a:hover{text-decoration:underline}.stepper{display:grid;grid-template-columns:repeat(5,1fr);gap:13px}.step{border-top:2px solid #83b99a;padding:23px 6px 0 0;position:relative}.step:before{content:"";position:absolute;top:-7px;width:12px;height:12px;background:#3db681;border-radius:50%;border:3px solid var(--paper)}.step b{display:block;font:800 .99rem 'Manrope',sans-serif}.step p{color:var(--muted);font-size:.82rem;margin-top:10px}.page-hero{background:#e9f2e7;padding:83px 0 78px;border-bottom:1px solid #d1e2d3}.page-hero h1{font-size:clamp(3.1rem,6vw,5.6rem);margin:21px 0}.page-hero p{font-size:1.12rem;color:#587666;max-width:820px;line-height:1.75}.crumb{font-size:.76rem;color:#5e826b;font-weight:700}.crumb a{color:inherit}.panel{padding:clamp(27px,4vw,52px);background:white;border-radius:27px;border:1px solid var(--line)}.panel h2{font-size:clamp(1.8rem,3vw,2.9rem);margin-bottom:20px}.panel p,.panel li{color:#617b6d}.panel p+p{margin-top:17px}.split{display:grid;grid-template-columns:1fr 1fr;gap:38px;align-items:center}.illustration{background:linear-gradient(125deg,#def1d8,#a8dbc1);min-height:360px;border-radius:28px;border:1px solid #c0dfc4;display:flex;flex-direction:column;justify-content:space-between;padding:34px;overflow:hidden}.illustration .symbol{font-size:9rem;opacity:.23;text-align:right;line-height:1}.illustration b{font:800 1.7rem/1.25 Manrope;max-width:280px}.tag{display:inline-block;border-radius:100px;background:#e1f4e3;color:#2b7551;font-size:.72rem;font-weight:800;padding:7px 13px}.tag.amber{background:#fff0d7;color:#855b1b}.callout{padding:21px 24px;background:#e7f3e7;color:#436955;border-left:4px solid #43b980;border-radius:0 15px 15px 0;margin-top:26px;font-size:.93rem}.note{font-size:.78rem;color:var(--muted);margin-top:16px}.flow{display:grid;grid-template-columns:repeat(5,1fr);gap:9px}.flow>div{padding:22px 14px;background:#e7f4e8;border-radius:15px;text-align:center;font-weight:800;font-size:.84rem}.flow>div span{display:block;font-size:1.8rem;margin-bottom:8px}.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.metric{background:white;border:1px solid var(--line);border-radius:19px;padding:25px}.metric b{display:block;font:800 2.2rem Manrope;color:#207653}.metric span{font-size:.83rem;color:var(--muted)}.cta{background:#dceecb;border-radius:32px;padding:57px;display:flex;align-items:center;justify-content:space-between;gap:24px}.cta h2{font-size:clamp(2rem,4vw,3.4rem);max-width:730px}.footer{background:#082b23;color:#d6e9da;padding:70px 0 25px}.footer-grid{display:grid;grid-template-columns:1.45fr repeat(3,1fr);gap:40px}.footer .brand{color:white}.footer p{color:#aec7b9;font-size:.87rem;max-width:310px;margin-top:23px}.footer h4{font-size:.9rem;margin-bottom:18px}.footer a:not(.brand){display:block;font-size:.86rem;color:#aec7b9;text-decoration:none;margin:9px 0}.footer a:hover{color:white}.footer-bottom{border-top:1px solid #2b5245;margin-top:58px;padding-top:18px;color:#93ad9f;font-size:.76rem;display:flex;justify-content:space-between;gap:20px}.lesson-list{display:grid;gap:12px}.lesson{display:flex;gap:22px;align-items:center;justify-content:space-between;background:white;border:1px solid var(--line);padding:21px 24px;border-radius:17px;text-decoration:none}.lesson:hover{border-color:#6eaf8e}.lesson b{font:800 1.05rem Manrope}.lesson small{display:block;color:var(--muted);margin-top:4px}.lesson .arrow{font-size:1.3rem;color:var(--forest)}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:19px}table{width:100%;border-collapse:collapse;background:white;text-align:left}th,td{padding:18px 21px;border-bottom:1px solid var(--line);vertical-align:top}th{font-size:.77rem;text-transform:uppercase;letter-spacing:.06em;background:#eff6ed}td{font-size:.9rem;color:#60766b}tr:last-child td{border-bottom:0}.sim{border-radius:26px;padding:clamp(22px,4vw,38px);background:white;border:1px solid var(--line)}.controls{display:grid;gap:21px}.control label{display:flex;justify-content:space-between;gap:14px;font-weight:700;font-size:.88rem;margin-bottom:10px}.control strong{color:#187b53}.control input[type=range]{width:100%;accent-color:#16835a;cursor:pointer}.meter{display:flex;height:21px;overflow:hidden;border-radius:10px;background:#efaa68;margin:15px 0 8px}.meter .good{background:#42b787}.sim .metric{background:#f1f7f0}.quiz-buttons{display:flex;gap:10px;flex-wrap:wrap;margin:22px 0 0}.quiz-buttons button{padding:11px 15px;background:#fff;border:1px solid #b6d5be;border-radius:12px;color:#1b6849;font-weight:800}.quiz-buttons button:hover{background:#e4f3e5}.quiz-buttons button:disabled{opacity:.5;cursor:default}.quiz-feedback{min-height:70px;margin-top:19px;color:#476b53;font-size:.94rem}.quiz-feedback strong{color:#176d4d}.progress{height:8px;background:#e5eee4;border-radius:6px;overflow:hidden;margin:18px 0}.progress div{height:100%;background:#2ca776;transition:width .2s}.tabs{display:flex;gap:9px;flex-wrap:wrap}.tabs button{padding:12px 17px;border:1px solid #a9c8b4;background:white;border-radius:12px;font-weight:800;font-size:.88rem}.tabs button.active{background:#145b43;color:#fff}.stage-display{border:1px solid var(--line);background:white;border-radius:20px;padding:33px;margin-top:16px;min-height:210px}.stage-display p{color:var(--muted);margin-top:12px}.topic-links{display:flex;gap:10px;flex-wrap:wrap;margin-top:21px}.topic-links a{border:1px solid #b5d5ba;padding:8px 14px;border-radius:20px;text-decoration:none;font-weight:700;font-size:.82rem;background:#fff}.topic-links a:hover{background:#e2f2e4}.disclaimer{padding:18px;background:#fff3dd;color:#775c31;border:1px solid #ebd7a8;border-radius:14px;font-size:.87rem}.text-link{font-weight:800;color:var(--forest);text-decoration:none}.text-link:hover{text-decoration:underline}
@media(max-width:1040px){.brand{min-width:155px}.nav{gap:12px}.nav a{font-size:.76rem}.hero-grid{gap:20px}.orb{width:350px}}
@media(max-width:1100px){.menu{display:block}.nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--paper);padding:15px 24px 24px;box-shadow:0 17px 29px #092d2522;flex-direction:column;align-items:stretch}.nav.is-open{display:flex}.nav a{font-size:1rem;padding:9px 0}.nav .nav-cta{text-align:center}.hero-grid{grid-template-columns:1fr;padding:66px 0}.orb-scene{height:360px}.orb{width:320px}.float.two{right:0}.section{padding:72px 0}.cols-3,.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,1fr)}.split{grid-template-columns:1fr}.cta{display:block}.cta .btn{margin-top:22px}.section-head{display:block}.section-head p{margin-top:18px}}
@media(max-width:550px){.shell{width:calc(100% - 34px)}.hero h1{font-size:3.2rem}.orb-scene{height:290px}.orb{width:255px}.orb-core{font-size:3.5rem}.float{padding:9px 11px;font-size:.64rem}.float.two{right:-6px}.cols-2,.cols-3,.cols-4,.metrics,.footer-grid{grid-template-columns:1fr}.section-head h2{font-size:2.4rem}.stepper{grid-template-columns:repeat(2,1fr)}.flow{grid-template-columns:repeat(2,1fr)}.page-hero{padding:64px 0}.cta{padding:35px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:5px 0}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}