:root{--ink:#172638;--navy:#132539;--deep:#0e1f30;--mint:#c9efdc;--teal:#217e68;--orange:#efab79;--paper:#fbfaf7;--cloud:#f2f5f2;--line:#dfe7e3;--muted:#60717c;--white:#fff;--max:1170px;--radius:19px;--shadow:0 16px 50px rgba(16,39,48,.10);--font:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;--serif:Georgia,'Times New Roman',serif}
*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.73 var(--font);-webkit-font-smoothing:antialiased}body.nav-open{overflow:hidden}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}img,svg{max-width:100%}img{display:block}h1,h2,h3,h4{font-weight:750;letter-spacing:-.045em;line-height:1.14;margin:0}h1{font-size:clamp(2.6rem,5.7vw,5.7rem)}h2{font-size:clamp(2rem,4vw,3.5rem)}h3{font-size:1.4rem}p{margin:0 0 1.1rem}ul{padding-left:1.4rem}:focus-visible{outline:3px solid #f6aa65;outline-offset:3px}::selection{background:var(--mint);color:var(--deep)}.wrap{max-width:var(--max);padding:0 26px;margin:0 auto}.skip{position:absolute;left:16px;top:-100px;background:#fff;padding:8px 14px;z-index:1000}.skip:focus{top:12px}.announcement{background:var(--deep);color:#d9e6e7;padding:8px 16px;font-size:.77rem;text-align:center;letter-spacing:.02em}.announcement b{color:#d8f1e0}.site-header{position:sticky;top:0;z-index:100;background:rgba(251,250,247,.96);backdrop-filter:blur(16px);border-bottom:1px solid #dfe6e2}.header-wrap{min-height:77px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:10px;white-space:nowrap;font-size:1.18rem;font-weight:830;line-height:1;letter-spacing:-.055em;color:var(--deep)}.brand-mark{display:grid;place-items:center;width:43px;height:43px;background:var(--deep);border-radius:13px;color:#ddfbe8;font:800 1.28rem/1 var(--serif);transform:rotate(-6deg)}.brand .brand-small{font-weight:600;color:#4b6a65;letter-spacing:.01em;font-size:.66rem;display:block;margin-top:7px}.main-nav{margin-left:auto;display:flex;align-items:center;gap:26px}.main-nav>a{font-size:.87rem;font-weight:680;color:#314e52;transition:color .16s}.main-nav>a:hover,.main-nav>a[aria-current=page]{color:#138166}.btn{display:inline-flex;gap:10px;align-items:center;justify-content:center;min-height:47px;padding:12px 21px;border:1px solid transparent;border-radius:100px;font-weight:780;font-size:.87rem;letter-spacing:-.015em;line-height:1.3;transition:transform .2s,background .2s,box-shadow .2s}.btn:hover{transform:translateY(-2px)}.btn-primary{background:var(--deep);color:#f6fff9}.btn-primary:hover{background:#264d46;box-shadow:0 12px 27px #102b262b}.btn-mint{background:#dcf6e6;color:#163a31}.btn-mint:hover{background:#c4eccc}.btn-outline{border-color:#8fa9a1;background:transparent;color:var(--deep)}.btn-white{background:#fff;color:var(--deep)}.nav-toggle{display:none;margin-left:auto;background:var(--deep);color:#fff;width:45px;height:44px;border:0;border-radius:11px;font-size:1.3rem}.hero{background:radial-gradient(ellipse at 91% 14%,#2f6052 0,transparent 46%),linear-gradient(132deg,#102333,#173b3e);overflow:hidden;color:#fff;position:relative}.hero:before{content:'';position:absolute;width:730px;height:730px;border:1px solid #ffffff21;border-radius:50%;top:-440px;right:-250px;box-shadow:0 0 0 100px #ffffff07,0 0 0 200px #ffffff06}.hero-inner{padding-top:92px;padding-bottom:94px;min-height:590px;display:grid;align-items:center;grid-template-columns:1.13fr .87fr;gap:42px;position:relative}.eyebrow{display:inline-flex;align-items:center;gap:9px;text-transform:uppercase;font-weight:840;font-size:.73rem;letter-spacing:.15em;color:#c2e9d7}.eyebrow:before{content:'';width:21px;height:5px;background:#f4ba88;border-radius:10px}.eyebrow.dark{color:#237e68}.hero h1{margin:24px 0 22px;max-width:780px;letter-spacing:-.065em}.hero h1 em{color:#c9f0d9;font-family:var(--serif);font-weight:500}.hero p{max-width:540px;font-size:1.09rem;color:#cbdad8}.hero-actions{display:flex;flex-wrap:wrap;gap:13px;margin:31px 0 0}.hero-note{font-size:.76rem;color:#b8d4d0;margin-top:24px}.hero-visual{position:relative;min-height:430px;display:flex;align-items:center;justify-content:center}.hero-visual img{width:100%;filter:drop-shadow(0 20px 45px #04141a44)}.hero-bottom{height:10px;background:linear-gradient(90deg,#b9e5d0 0 44%,#f5bb8f 44% 66%,#8bb5a8 66%)}.section{padding:91px 0}.section.sm{padding:68px 0}.section.alt{background:var(--cloud)}.section.deep{background:var(--deep);color:#fff}.sect-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:36px}.sect-head>div{max-width:670px}.sect-head h2{margin:10px 0 14px}.sect-head p{color:var(--muted);max-width:630px}.deep .sect-head p{color:#b7cdc6}.link-arrow{font-size:.86rem;font-weight:790;color:#187c65;white-space:nowrap}.link-arrow:after{content:' ↗'}.deep .link-arrow{color:#c6eed9}.pill{border-radius:99px;border:1px solid #cbdcd4;background:#eff8f1;color:#276b56;font-weight:780;font-size:.69rem;letter-spacing:.07em;padding:6px 11px;text-transform:uppercase;display:inline-flex}.stat-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:-38px;position:relative;z-index:3}.stat{border-radius:16px;padding:24px;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line)}.stat b{display:block;font-size:1.1rem;letter-spacing:-.04em}.stat span{font-size:.86rem;color:var(--muted)}.grid3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:19px}.grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:21px}.topic-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:27px;min-height:235px;position:relative;transition:transform .2s,box-shadow .2s;display:block}.topic-card:hover,.article-card:hover,.utility-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.topic-card .topic-icon{height:55px;width:55px;display:grid;place-items:center;background:var(--topic-bg,#ddf6ef);border-radius:15px;color:#214b41;font-size:1.8rem;margin-bottom:28px}.topic-card h3{margin:0 0 11px}.topic-card p{font-size:.87rem;color:var(--muted);line-height:1.64}.topic-card:after{content:'↗';position:absolute;right:24px;top:24px;font-size:1.1rem;color:#47836e}.article-card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;overflow:hidden;height:100%;display:flex;flex-direction:column;transition:transform .2s,box-shadow .2s}.article-art{height:157px;position:relative;overflow:hidden;display:flex;justify-content:center;align-items:center;background:var(--tone,#e1f4e8)}.article-art:before{content:'';position:absolute;inset:25px -70px auto auto;width:225px;height:225px;border:1px solid #183a3035;border-radius:50%;box-shadow:0 0 0 28px #ffffff75,0 0 0 58px #ffffff55}.article-art:after{content:'';position:absolute;inset:auto auto -85px -34px;width:150px;height:150px;border:1px solid #183a302b;border-radius:26px;transform:rotate(23deg)}.article-art .art-glyph{font-family:var(--serif);font-weight:700;font-size:4.5rem;color:#275449;transform:rotate(-10deg);text-shadow:0 9px 30px #ffffff7b}.article-card-body{padding:24px;flex:1;display:flex;flex-direction:column}.card-meta{display:flex;gap:10px;flex-wrap:wrap;align-items:center;font-size:.72rem;letter-spacing:.045em;text-transform:uppercase;color:#668175;font-weight:840;margin-bottom:13px}.article-card h3{font-size:1.28rem;line-height:1.25;margin-bottom:12px}.article-card p{font-size:.89rem;line-height:1.65;color:var(--muted);flex:1}.readmore{margin-top:14px;color:#196f57;font-weight:830;font-size:.85rem}.readmore:after{content:' →'}.utility-card{display:flex;flex-direction:column;border:1px solid #426156;background:#193a3d;border-radius:19px;padding:29px;color:#fff;transition:transform .2s}.utility-card .utility-num{font:400 3.4rem var(--serif);color:#c3f0d4;margin-bottom:21px}.utility-card h3{margin-bottom:11px}.utility-card p{color:#b9d0c8;font-size:.91rem;flex:1}.utility-card a{color:#bff0d5;font-size:.87rem;font-weight:800;margin-top:15px}.feature-layout{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:64px}.feature-panel{border-radius:26px;padding:39px;background:#e7f3e9;min-height:340px;position:relative;overflow:hidden}.feature-panel blockquote{font:400 clamp(1.9rem,3.5vw,3.2rem)/1.25 var(--serif);margin:30px 0 0;color:#154537;letter-spacing:-.03em}.feature-panel .mini-line{font-weight:790;font-size:.78rem;color:#308069;letter-spacing:.13em;text-transform:uppercase}.feature-panel:after{content:'“';font:normal 18rem var(--serif);position:absolute;right:10px;bottom:-145px;color:#b9d9c5}.feature-text h2{margin:12px 0 21px}.feature-text p{color:var(--muted)}.feature-text ul{list-style:none;padding:0;margin:25px 0}.feature-text li{padding:12px 0;border-top:1px solid var(--line);font-weight:680}.feature-text li:before{content:'✓';display:inline-grid;place-items:center;background:#d8f1e3;border-radius:50%;height:24px;width:24px;color:#20735b;margin-right:14px}.cta-band{background:linear-gradient(105deg,#d8f4e6,#f1f7e9);border-radius:24px;padding:46px;display:flex;gap:25px;align-items:center;justify-content:space-between}.cta-band h2{font-size:clamp(1.9rem,3.3vw,2.9rem);margin-bottom:10px}.cta-band p{margin:0;color:#4d6b60}.page-hero{background:var(--deep);color:#fff;padding:75px 0 74px;position:relative;overflow:hidden}.page-hero:after{content:'';width:450px;height:450px;border:1px solid #ffffff25;border-radius:50%;position:absolute;right:-110px;bottom:-275px;box-shadow:0 0 0 50px #ffffff05,0 0 0 100px #ffffff06}.page-hero .wrap{position:relative;z-index:1}.page-hero h1{font-size:clamp(2.6rem,5.3vw,4.7rem);margin:20px 0;max-width:900px}.page-hero p{color:#b9cfc8;max-width:720px;font-size:1.1rem}.breadcrumb{display:flex;gap:9px;align-items:center;font-size:.78rem;color:#86b6aa;flex-wrap:wrap}.breadcrumb a{color:#bfdcd3}.breadcrumb span{color:#e8f1eb}.subnav{display:flex;flex-wrap:wrap;gap:8px;margin:28px 0}.filter-btn{border:1px solid #ccddd2;background:#fff;color:#3b6258;padding:10px 14px;border-radius:60px;font-size:.81rem;font-weight:740}.filter-btn.active,.filter-btn:hover{background:#1d5145;color:#fff;border-color:#1d5145}.search-row{display:flex;gap:10px;max-width:600px;margin-top:25px}.search-row input,.field input,.field textarea,.field select{width:100%;background:#fff;border:1px solid #cbd9d2;border-radius:12px;padding:13px 16px;color:var(--ink)}.search-row input{min-height:53px;padding-left:18px}.search-row input::placeholder{color:#83958c}.search-count{font-size:.85rem;color:#597365;margin-bottom:18px}.empty-state{display:none;background:#fff;border:1px dashed #acc8b9;border-radius:15px;padding:24px}.divider-top{border-top:1px solid var(--line)}.prose-shell{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:48px;align-items:start}.prose{font-size:1.04rem;line-height:1.84;min-width:0}.prose p{margin:0 0 1.3rem}.prose h2{font-size:clamp(1.62rem,3vw,2.15rem);margin:45px 0 20px;scroll-margin-top:110px}.prose h3{font-size:1.22rem;margin:32px 0 14px}.prose ul,.prose ol{margin-bottom:24px;padding-left:26px}.prose li{margin-bottom:11px}.prose a:not(.btn){color:#156f59;text-decoration:underline;text-decoration-color:#96cbb1;text-underline-offset:4px}.prose strong{color:#193b3a}.prose .intro{font-size:1.2rem;line-height:1.73;color:#435c55}.prose .content-callout{border-left:4px solid #207d65;background:#edf7ee;padding:22px 25px;border-radius:0 15px 15px 0;margin:30px 0}.prose .content-callout p:last-child{margin:0}.prose blockquote{border-left:4px solid #e8ab7e;margin:29px 0;padding:8px 22px;color:#244a41;background:#fff9f2;font-family:var(--serif);font-size:1.22rem}.prose .action-box{background:#152e36;color:#edf8f2;padding:28px 31px;border-radius:18px;margin:32px 0}.prose .action-box strong{color:#d1f5df}.prose .action-box p{margin:10px 0 0}.prose .source-list{font-size:.91rem;padding-left:21px}.prose .source-list li{margin-bottom:10px}.article-sidebar{position:sticky;top:106px}.side-card{background:#fff;border:1px solid var(--line);padding:25px;border-radius:18px;margin-bottom:16px}.side-card h3{font-size:1.05rem;margin-bottom:14px}.side-card a{display:block;padding:9px 0;border-bottom:1px solid #e8eee8;font-size:.82rem;color:#416f60;line-height:1.4}.side-card a:last-child{border-bottom:0}.side-card p{font-size:.83rem;color:var(--muted);line-height:1.7}.article-topmeta{display:flex;flex-wrap:wrap;gap:10px 21px;color:#aacabe;font-size:.83rem;margin-top:19px}.article-topmeta span:before{content:'•';margin-right:9px}.article-topmeta span:first-child:before{content:'';margin:0}.article-footer{margin-top:47px;border-top:1px solid var(--line);padding-top:28px}.byline{color:#647c72;font-size:.82rem}.article-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.article-nav a{border:1px solid var(--line);border-radius:13px;padding:18px;background:#fff;font-weight:750;font-size:.9rem}.article-nav small{display:block;color:#758b7c;font-weight:650;margin-bottom:4px}.info-block{background:#fff;border:1px solid var(--line);border-radius:17px;padding:30px}.info-block h3{margin-bottom:15px}.info-block p{color:var(--muted);font-size:.91rem}.info-block ul{padding-left:18px}.faq details{background:#fff;border:1px solid var(--line);border-radius:13px;padding:20px 22px;margin-bottom:10px}.faq summary{cursor:pointer;font-weight:800}.faq details p{padding-top:13px;color:#586e64;font-size:.93rem;margin:0}.tools-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px}.tool-area{background:#fff;border:1px solid var(--line);padding:32px;border-radius:20px}.tool-result{background:#153936;color:#eafaf1;border-radius:18px;padding:26px}.tool-result .result-value{font-size:clamp(2.25rem,5vw,3.5rem);font-weight:850;line-height:1.15;color:#c0f4d5;letter-spacing:-.06em}.tool-result small{color:#afd6c5}.field{margin-bottom:19px}.field label{display:block;font-size:.83rem;color:#31544a;font-weight:800;margin-bottom:7px}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid #9dcdbc}.field-help{color:#718479;font-size:.77rem;margin-top:5px}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:23px}.result-grid>div{border:1px solid #4b7770;padding:15px;border-radius:12px}.result-grid b{display:block;color:#f4fff8;font-size:1.5rem}.result-grid span{color:#b8d6ca;font-size:.78rem}.muted{color:var(--muted)}.small{font-size:.84rem}.print-sheet{background:#fff;border:1px solid var(--line);padding:45px;border-radius:18px}.print-sheet .print-line{border-bottom:1px solid #b8c7bd;height:42px}.print-sheet h3{margin:30px 0 10px;font-size:1.15rem}.print-sheet .worksheet-instructions{color:#6e7f74}.foot-links{display:grid;grid-template-columns:1.25fr repeat(3,1fr);gap:35px}.site-footer{background:#0f2330;color:#cfddd7;padding:71px 0 30px}.site-footer .brand{color:#fff}.site-footer .brand-small{color:#b4d1c4}.foot-links h3{font-size:.82rem;font-weight:830;letter-spacing:.08em;text-transform:uppercase;color:#c7ead8;margin:9px 0 18px}.foot-links a{display:block;font-size:.88rem;color:#aec9be;padding:6px 0}.foot-links a:hover{color:#fff}.foot-links p{font-size:.85rem;color:#aec9be;max-width:270px;margin:20px 0}.foot-base{border-top:1px solid #426057;margin-top:50px;padding-top:20px;display:flex;justify-content:space-between;gap:15px;font-size:.74rem;color:#a5c3b5}.foot-base a{margin-left:14px}.progress{height:3px;position:fixed;top:0;left:0;width:0;background:#e9a775;z-index:200;pointer-events:none}.floating-top{position:fixed;right:23px;bottom:22px;background:#142e35;color:#fff;border-radius:50%;height:42px;width:42px;border:0;box-shadow:0 5px 20px #1116;display:none;z-index:10}.floating-top.visible{display:block}.status{font-size:.83rem;color:#427f67;margin-top:12px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:980px){.main-nav{gap:14px}.main-nav>a{font-size:.79rem}.hero-inner{gap:10px}.hero-visual{min-height:300px}.prose-shell{grid-template-columns:minmax(0,1fr) 220px;gap:24px}.foot-links{grid-template-columns:1.1fr 1fr 1fr;gap:25px}.foot-links>div:last-child{display:none}}
@media(max-width:760px){.wrap{padding:0 19px}.announcement{font-size:.69rem}.header-wrap{min-height:69px}.nav-toggle{display:block}.main-nav{display:none;position:fixed;top:69px;left:0;right:0;margin:0;background:var(--paper);padding:25px 20px 30px;flex-direction:column;align-items:stretch;box-shadow:0 20px 50px #1115;max-height:calc(100vh - 69px);overflow:auto}.main-nav.open{display:flex}.main-nav a{font-size:1rem;padding:10px 7px}.hero-inner{grid-template-columns:1fr;padding-top:65px;padding-bottom:55px;gap:5px}.hero h1{font-size:clamp(2.55rem,10.2vw,4.2rem)}.hero-visual{min-height:265px;max-width:470px;justify-self:center}.stat-strip,.grid3,.grid2,.tools-grid{grid-template-columns:1fr}.stat-strip{margin-top:-16px}.section{padding:68px 0}.section.sm{padding:51px 0}.sect-head{align-items:start;flex-direction:column;gap:12px}.sect-head h2{font-size:2.25rem}.feature-layout{grid-template-columns:1fr;gap:30px}.feature-panel{min-height:280px}.page-hero{padding:53px 0 54px}.page-hero h1{font-size:clamp(2.45rem,9vw,4.2rem)}.prose-shell{grid-template-columns:1fr}.article-sidebar{position:static}.side-card{margin-bottom:12px}.article-nav{grid-template-columns:1fr}.cta-band{padding:27px;flex-direction:column;align-items:start}.foot-links{grid-template-columns:repeat(2,1fr);gap:27px}.foot-links>div:first-child{grid-column:1/-1}.foot-links>div:last-child{display:block}.foot-base{flex-direction:column}.foot-base a{margin-left:0;margin-right:13px}.tool-area{padding:23px}.print-sheet{padding:24px}.article-art{height:138px}}
@media print{.announcement,.site-header,.site-footer,.page-hero,.breadcrumb,.nav-toggle,.floating-top,.skip,.no-print,.article-sidebar,.progress{display:none!important}body{background:#fff;color:#111;font:11pt/1.4 Georgia,serif}.wrap{max-width:none;padding:0}.section{padding:0}.print-sheet{border:0;padding:0}.print-sheet .print-line{height:33px}a{text-decoration:underline}.print-sheet h2{font-size:19pt}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important}}