:root{--ink:#0b0f19;--navy:#101a2b;--paper:#f7f7f2;--line:#d8deea;--muted:#536075;--yellow:#f2b400;--green:#86c232;--blue:#4b7bec;--shell:1200px}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:500 16px/1.65 Manrope,system-ui,-apple-system,Segoe UI,sans-serif}
img,svg{max-width:100%;height:auto}
a{color:inherit;text-underline-offset:.22em}
a:focus-visible,button:focus-visible{outline:3px solid var(--blue);outline-offset:3px}
.skip{position:absolute;left:12px;top:-60px;z-index:20;background:#fff;padding:8px 14px}
.skip:focus{top:12px}
.shell{width:min(var(--shell),calc(100% - 48px));margin-inline:auto}
.site-header{background:var(--ink);color:#fff;border-bottom:1px solid #283347}
.header-row{min-height:75px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.wordmark{font-size:22px;letter-spacing:.04em;font-weight:800;text-decoration:none;white-space:nowrap}
.wordmark-dot{color:var(--yellow)}
.site-header nav{display:flex;gap:clamp(16px,3vw,38px);align-items:center;flex-wrap:wrap}
.site-header nav a{font-size:13px;font-weight:800;text-decoration:none;opacity:.78}
.site-header nav a:hover,.site-header nav a[aria-current]{opacity:1;color:var(--yellow)}
.eyebrow,.card-kicker,.callout-label{font-size:11px;letter-spacing:.15em;text-transform:uppercase;font-weight:800}
.hub-hero{background:radial-gradient(circle at 78% 35%,#192f56 0,#101a2b 42%,#0b0f19 82%);color:#fff;overflow:hidden}
.hero-grid{min-height:540px;display:grid;grid-template-columns:1.04fr .96fr;gap:16px;align-items:center;padding-block:64px}
.hub-hero .eyebrow{color:var(--yellow)}
h1,h2,h3,p{margin-top:0}
.hub-hero h1{font-size:clamp(43px,6vw,86px);line-height:1.03;letter-spacing:-.055em;max-width:720px;margin:24px 0}
.hub-hero h1 em{font-style:normal;color:var(--yellow)}
.hub-hero p{max-width:590px;color:#d8e1f0;font-size:clamp(16px,1.5vw,20px);line-height:1.55}
.text-link{display:inline-block;margin-top:15px;color:#fff;font-weight:800;text-decoration-thickness:2px;text-decoration-color:var(--yellow)}
.hero-grid img{width:100%;object-fit:contain;filter:drop-shadow(0 28px 60px #02050a88)}
.featured,.library{padding-block:70px}
.section-top{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:28px}
.section-top h2{font-size:clamp(29px,3.5vw,45px);line-height:1.15;letter-spacing:-.035em;margin:8px 0 0}
.section-top p{max-width:360px;color:var(--muted);margin:0}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feature-card{display:flex;min-height:230px;flex-direction:column;justify-content:space-between;padding:27px;border-radius:22px;background:var(--navy);color:#fff;text-decoration:none;border-top:5px solid var(--yellow);transition:transform .15s ease,box-shadow .15s ease}
.feature-card:nth-child(2){border-color:var(--green)}
.feature-card:nth-child(3){border-color:var(--blue)}
.feature-card:hover{transform:translateY(-3px);box-shadow:0 15px 30px #0b0f1922}
.feature-card span,.feature-card small{font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:800;color:#aebbd0}
.feature-card strong{font-size:22px;line-height:1.25;letter-spacing:-.025em}
.library{padding-top:24px}
.filters{display:flex;flex-wrap:wrap;gap:9px;padding:18px 0 5px;border-top:1px solid var(--line)}
.filters button{border:1px solid #b8c3d3;background:#fff;color:var(--ink);font:800 12px/1.3 Manrope,system-ui,sans-serif;border-radius:999px;padding:10px 14px;cursor:pointer}
.filters button:hover,.filters button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.filters span{opacity:.55;margin-left:5px}
.filter-status{font-size:12px;color:var(--muted);margin:10px 0 22px}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
.card{min-width:0;background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;display:flex;flex-direction:column;min-height:265px}
.card[hidden]{display:none}
.card-kicker{color:#60728d;line-height:1.35}
.card h3{font-size:20px;line-height:1.28;letter-spacing:-.02em;margin:13px 0 10px}
.card h3 a{text-decoration:none}
.card h3 a:hover{text-decoration:underline;text-decoration-color:var(--yellow)}
.card p{font-size:13px;line-height:1.6;color:var(--muted);margin:0 0 16px}
.card-meta{border-top:1px solid var(--line);padding-top:14px;margin-top:auto;display:flex;gap:8px;justify-content:space-between;color:#69768a;font-size:10px;font-weight:700}
.hub-cta{padding:66px 0;background:var(--yellow)}
.hub-cta h2{font-size:clamp(32px,4vw,52px);letter-spacing:-.04em;line-height:1.1;margin:12px 0}
.hub-cta p{max-width:650px}
.button{display:inline-block;background:var(--ink);color:#fff;padding:13px 19px;border-radius:8px;text-decoration:none;font-size:13px;font-weight:800}
.button:hover{background:#294679}
.site-footer{background:var(--ink);color:#fff;padding:46px 0}
.footer-row{display:flex;justify-content:space-between;gap:35px;align-items:start}
.footer-row p{font-weight:800;line-height:1.5}
.footer-row p span{font-size:12px;color:#b7c1d2;font-weight:500}
.footer-row div{display:flex;gap:22px;font-size:12px;font-weight:700}
.article-shell{width:min(1080px,calc(100% - 48px));margin:auto;padding:32px 0 100px}
.breadcrumb{display:flex;flex-wrap:wrap;gap:10px;color:#607084;font-size:12px;margin-bottom:70px}
.breadcrumb a:hover{color:var(--ink)}
.article-shell>.eyebrow{color:#51698a}
.article-shell h1{font-size:clamp(37px,5.6vw,68px);line-height:1.08;letter-spacing:-.05em;max-width:960px;margin:14px 0 25px}
.dek{max-width:900px;color:#334158;font-size:clamp(18px,2vw,23px);line-height:1.6;margin-bottom:28px}
.byline{display:flex;gap:15px 30px;flex-wrap:wrap;color:#596779;font-size:11px;border-top:1px solid var(--line);padding-top:16px;margin-bottom:36px}
.byline strong{color:var(--ink)}
.method-figure{margin:0 0 46px}
.method-figure svg{display:block;width:100%;border-radius:22px}
.diagram-mobile{display:none}
.method-figure figcaption{font-size:11px;color:#6b788c;margin-top:8px}
.article-body{max-width:820px;margin-inline:auto}
.article-body section{scroll-margin-top:20px;margin:0 0 58px}
.article-body h2{font-size:clamp(25px,3vw,36px);line-height:1.24;letter-spacing:-.035em;margin:0 0 17px}
.article-body p{font-size:16px;line-height:1.82;margin:0 0 18px}
.contents{border-left:4px solid var(--yellow);padding:16px 22px;margin-bottom:52px;background:#fff;display:flex;gap:10px 24px;flex-wrap:wrap;font-size:12px}
.contents strong{width:100%;text-transform:uppercase;letter-spacing:.12em;font-size:11px}
.contents a{color:#375a91;font-weight:800}
.steps{counter-reset:step;list-style:none;padding:0;margin:25px 0}
.steps li{position:relative;padding:16px 18px 16px 58px;border-top:1px solid var(--line);line-height:1.65}
.steps li:last-child{border-bottom:1px solid var(--line)}
.steps li:before{counter-increment:step;content:counter(step,decimal-leading-zero);position:absolute;left:10px;top:17px;color:#3762a1;font-size:13px;font-weight:800}
.table-scroll{overflow-x:auto;border-radius:13px;border:1px solid var(--line);background:#fff}
table{width:100%;border-collapse:collapse;min-width:560px;font-size:13px;line-height:1.6}
th,td{padding:14px 17px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead{background:var(--navy);color:#fff;font-size:11px;text-transform:uppercase;letter-spacing:.08em}
tbody tr:last-child>*{border-bottom:0}
tbody th{width:28%;font-weight:800}
.evidence-callout{border-radius:16px;background:#e9f0fb;border-left:5px solid var(--blue);padding:23px 25px;margin-bottom:20px}
.evidence-callout p{margin:8px 0 0}
.callout-label{color:#355d9a}
.sources{border-top:1px solid var(--line);padding-top:30px}
.sources ul{padding-left:22px}
.sources li{margin:9px 0;font-size:13px}
.sources p{font-size:12px;color:#596779}
.market-cta{background:var(--navy);color:#fff;border-radius:22px;padding:38px;margin:10px 0 55px}
.market-cta .callout-label{color:var(--yellow)}
.market-cta h2{margin-top:10px}
.market-cta p{color:#cad5e6}
.market-cta .button{background:var(--yellow);color:var(--ink);margin-top:8px}
.related{border-top:1px solid var(--line);padding-top:25px}
.related ul{list-style:none;padding:0;margin:10px 0 25px}
.related li{border-bottom:1px solid var(--line);padding:12px 0}
.related li a{font-size:14px;font-weight:800;text-decoration:none;display:flex;justify-content:space-between;gap:20px}
.related li a:hover,.back-link:hover{text-decoration:underline}
.back-link{font-size:13px;font-weight:800;color:#375a91}
.review{padding-block:50px 100px}
.review h1{font-size:clamp(32px,5vw,60px);letter-spacing:-.04em}
.review table{min-width:880px}
@media(max-width:900px){.hero-grid{min-height:0;grid-template-columns:1fr 1fr}.feature-grid,.card-grid{grid-template-columns:repeat(2,1fr)}.section-top{align-items:start}.hub-hero h1{font-size:clamp(40px,6vw,60px)}}
@media(max-width:640px){.shell,.article-shell{width:min(100% - 32px,560px)}.header-row{min-height:70px;align-items:start;padding-block:18px;flex-direction:column;gap:12px}.site-header nav{gap:12px 18px}.site-header nav a{font-size:11px}.hero-grid{grid-template-columns:1fr;padding-block:45px}.hero-grid img{max-height:310px;justify-self:center}.hub-hero h1{font-size:clamp(40px,10vw,57px)}.section-top{display:block}.section-top p{margin-top:12px}.featured,.library{padding-block:48px}.feature-grid,.card-grid{grid-template-columns:1fr}.feature-card{min-height:180px}.card{min-height:220px}.article-shell{padding-top:24px}.breadcrumb{margin-bottom:46px}.article-shell h1{font-size:clamp(35px,9vw,48px)}.dek{font-size:17px}.byline{display:block}.byline span{display:block;margin-bottom:4px}.contents{display:block}.contents a{display:block;margin:7px 0}.method-figure svg{display:none}.diagram-mobile{display:grid;list-style:none;padding:15px;gap:8px;background:var(--navy);border-radius:17px;margin:0}.diagram-mobile li{display:flex;align-items:center;gap:12px;background:#fff;border-radius:9px;padding:10px;font-size:12px;font-weight:800;line-height:1.3}.diagram-mobile li span{display:grid;place-items:center;min-width:27px;height:27px;border-radius:7px;background:var(--yellow);font-size:10px}.diagram-mobile li:nth-child(2) span{background:var(--green)}.diagram-mobile li:nth-child(3) span{background:var(--blue)}.market-cta{padding:25px}.footer-row{display:block}.footer-row div{flex-wrap:wrap}.article-body p{font-size:15px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.feature-card{transition:none}}

.article-hero-image{margin:0 0 24px}.article-hero-image img{display:block;width:100%;border-radius:20px}.article-hero-image figcaption,.evidence-figure figcaption{font-size:11px;color:#657188;margin-top:8px}.article-body .method-figure{margin-top:28px}.evidence-figure{margin:25px 0}.evidence-figure img{display:block;width:100%;height:auto;border-radius:12px;border:1px solid #d8deea}.context-links{background:#fff7da;border-left:4px solid #f2b400;padding:14px 18px;margin-top:20px!important}.context-links a{font-weight:800}.article-body h3{font-size:clamp(22px,2.4vw,29px);line-height:1.25;letter-spacing:-.025em;margin:28px 0 15px}.worksheet-in-method{margin-top:32px}