@font-face{font-family:'DM Sans';font-style:normal;font-weight:400 700;font-display:swap;src:url('/assets/fonts/dm-sans.woff2') format('woff2')}
:root{color-scheme:light;--ink:#17394e;--muted:#587286;--teal:#087f85;--line:#dce6ed;--paper:#fff;--page:#f5f8fa;--blue:#eaf3f8}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;background:var(--page);color:var(--ink);font-family:'DM Sans',system-ui,sans-serif;font-size:15px;line-height:1.75}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer}img{max-width:100%;height:auto;display:block}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.22;letter-spacing:-.035em}h1{font-size:clamp(35px,4.6vw,58px);margin-bottom:21px}h2{font-size:27px}p{color:var(--muted)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #43a9ba;outline-offset:4px}a:hover{color:var(--teal)}
.skip{position:fixed;top:-100px;left:15px;padding:12px 18px;background:white;z-index:100}.skip:focus{top:10px}
.content-header{height:94px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:30px;padding:10px max(28px,calc((100vw - 1280px)/2));position:sticky;top:0;z-index:20}.content-brand{flex:none}.content-header nav{display:flex;align-items:center;gap:30px}.content-header nav a{font-size:13px;font-weight:650;padding:12px 0}.header-help{font-size:12px;color:var(--muted)}
.content-main{max-width:1200px;width:calc(100% - 80px);margin:0 auto;padding:34px 0 74px}.eyebrow{color:var(--teal);font-size:10px;font-weight:700;letter-spacing:.11em;text-transform:uppercase;margin-bottom:12px}.lede{font-size:17px;line-height:1.8;max-width:770px}.breadcrumbs{display:flex;flex-wrap:wrap;gap:9px;color:var(--muted);font-size:11px;margin-bottom:31px}.breadcrumbs a:hover{text-decoration:underline}
.learn-hero{display:grid;grid-template-columns:1.25fr 1fr;gap:80px;align-items:center;padding:31px 0 65px}.learn-hero h1{font-size:clamp(42px,5vw,66px)}.hero-links{display:flex;align-items:center;flex-wrap:wrap;gap:20px;margin-top:26px}.hero-links>a:not(.action-button){font-size:13px;color:var(--teal)}.action-button{display:inline-flex;align-items:center;justify-content:center;gap:22px;background:#1e4c68;border:1px solid #1e4c68;color:#fff;border-radius:8px;padding:12px 19px;min-height:46px;font-size:12px;font-weight:650}.action-button:hover{background:#163e57;color:#fff}.hero-diagram{border:1px solid #cbdfe7;background:linear-gradient(145deg,#edf7f8,#e8f0f8);border-radius:18px;padding:15px 28px}.hero-diagram>div{position:relative;padding:21px 0 21px 44px}.hero-diagram>div+div{border-top:1px solid #ccdfe6}.hero-diagram span{position:absolute;left:0;top:24px;color:var(--teal);font-size:11px;font-weight:700}.hero-diagram strong{font-size:20px;letter-spacing:-.02em}.hero-diagram p{font-size:12px;margin:6px 0 0}
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.reader-note{display:grid;grid-template-columns:1fr 1fr;gap:70px;margin:58px 0;padding:32px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.reader-note h2{font-size:30px;margin:0}.reader-note>p{font-size:14px;margin:0}.publisher-strip{display:flex;justify-content:space-between;align-items:center;gap:25px;padding:28px;background:#eaf2f7;border-radius:12px}.publisher-strip h2{font-size:21px;margin-bottom:8px}.publisher-strip p{font-size:13px;margin:0}.publisher-strip>a{flex:none;font-size:12px;font-weight:650;color:var(--teal)}
.article-header{max-width:930px;margin-bottom:38px}.article-header h1{max-width:930px}.byline{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:11px;color:var(--muted);margin-top:24px}.byline a{font-weight:650;color:var(--ink)}.article-layout{display:grid;grid-template-columns:205px minmax(0,1fr);gap:55px;align-items:start}.article-toc{position:sticky;top:120px;padding-top:4px}.article-toc>p{font-size:9px;font-weight:700;letter-spacing:.09em;margin-bottom:12px}.article-toc nav{display:grid;gap:5px}.article-toc nav a{border-left:2px solid #dce6ed;padding:7px 0 7px 12px;font-size:11px;color:var(--muted);line-height:1.6}.article-toc nav a:hover{border-color:var(--teal);color:var(--teal)}.toc-back{display:inline-block;margin-top:25px;font-size:11px;color:var(--teal)}
.article-body{min-width:0;max-width:850px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:36px}.article-body section{scroll-margin-top:120px}.article-body section+section{padding-top:25px;margin-top:27px;border-top:1px solid #e5edf1}.article-body h2{font-size:24px;margin-bottom:17px}.article-body p,.article-body li{font-size:15px;line-height:1.9;color:#496578}.article-body p{margin-bottom:16px}.article-body p:last-child{margin-bottom:0}.article-body a:not(.article-action):not(.action-button){color:var(--teal);text-decoration:underline;text-underline-offset:3px}.article-body ol,.article-body ul{padding-left:22px}.article-body li{margin-bottom:10px}.article-sources p,.article-sources li{font-size:12px;line-height:1.85}.article-action{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#edf5f7;border:1px solid #cfe4e8;padding:19px 22px;border-radius:9px;color:#236474;margin-top:32px;font-size:13px}.article-action span{font-size:23px}
.map-example{margin:0 0 35px}.map-example img{width:100%;height:auto;border:1px solid var(--line)}figcaption{font-size:11px;line-height:1.7;color:var(--muted);padding-top:11px}.table-scroll{overflow-x:auto;width:100%;margin:20px 0}table{border-collapse:collapse;width:100%;font-size:12px;text-align:left}caption{text-align:left;color:var(--muted);font-size:11px;margin-bottom:11px}th,td{padding:12px;border-bottom:1px solid var(--line);vertical-align:top}thead{background:#f0f5f8}tbody th{font-weight:650}
.catalog-section{background:#fff;border:1px solid var(--line);padding:28px;border-radius:13px;margin-bottom:40px}.catalog-section .section-heading p{margin-top:12px;line-height:1.8}.catalog-controls{display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:18px;margin-top:23px}.catalog-controls label{display:grid;gap:7px;font-size:11px;font-weight:650;min-width:220px}.catalog-controls input{min-height:44px;padding:9px 12px;border:1px solid #c2d6e2;border-radius:7px;font-size:13px;color:var(--ink);background:#fff}.catalog-controls [role=group]{display:flex;flex-wrap:wrap;gap:7px}.catalog-controls button{min-height:44px;padding:9px 16px;background:#f5f8fa;border:1px solid #d2e1ea;border-radius:7px;font-size:12px;color:var(--muted)}.catalog-controls button[aria-pressed=true]{background:#e3f2f1;border-color:#8ec0bf;color:#086d72}.catalog-table{border:1px solid var(--line);border-radius:8px;margin-top:12px}.catalog-table caption{padding:12px;margin:0;background:#f8fafb}.catalog-table table{min-width:520px}.catalog-table th:first-child{width:38%}.catalog-table a{color:#236e81}.catalog-table tr[hidden]{display:none}.coverage-yes{font-size:11px;color:#1d7260;background:#eaf6f1;border-radius:4px;padding:3px 7px}.coverage-no{color:#879ba8}.catalog-detail,#catalog-count{font-size:12px;line-height:1.9}.model-explainers{margin-bottom:36px}
.learning-tool{padding:25px!important;background:#f1f7f9;border:1px solid #cce1e8!important;border-radius:12px}.learning-tool>p{font-size:13px}.tool-inputs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0}.tool-inputs label{display:grid;align-content:start;gap:7px;font-size:11px;font-weight:650;min-width:0}.tool-inputs input,.tool-inputs select{display:block;width:100%;min-width:0;min-height:44px;border:1px solid #bbd2df;border-radius:6px;padding:9px;background:#fff;color:var(--ink);font-size:12px}.tool-result{display:block;padding:17px;margin-top:20px;background:#e0f0ec;border-radius:8px;color:#205f55;font-size:14px;line-height:1.8}.tool-result.tool-error{background:#fff1df;color:#82551a}.learning-tool .tool-note{font-size:11px;line-height:1.8;margin:14px 0 0}
.related-guides{margin-top:48px;padding-left:260px}.related-guides .guide-card{padding:22px}.related-guides .guide-card h2{font-size:20px}.about-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:28px;align-items:start}.contact-card{border:1px solid var(--line);border-radius:13px;padding:25px;background:#eaf3f8}.contact-card h2{font-size:22px}.contact-card p{font-size:12px;line-height:1.9}.contact-card>a{font-size:12px;overflow-wrap:anywhere;color:var(--teal);font-weight:650}.contact-card .text-link{display:block;margin-top:19px}.method-flow{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin:35px 0}.method-flow>div{border:1px solid #d4e3eb;border-radius:11px;padding:23px;background:#edf4f8}.method-flow span{font-size:10px;color:var(--teal);font-weight:700}.method-flow h2{font-size:20px;margin:12px 0}.method-flow p{font-size:12px;margin:0}.standalone{margin:0 auto;max-width:900px}.not-found{padding:85px 0 120px;min-height:60vh}.not-found>p{max-width:580px}
.content-footer{background:#fff;border-top:1px solid var(--line);padding:40px max(28px,calc((100vw - 1200px)/2)) 22px}.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:35px}.footer-grid img{margin-bottom:14px}.footer-grid p,.footer-grid small{font-size:11px;color:var(--muted)}.footer-grid h2{font-size:12px;letter-spacing:0;margin:10px 0 15px}.footer-grid>div>a:not(:has(img)){display:block;font-size:11px;color:var(--muted);margin:7px 0}.footer-bottom{display:flex;justify-content:space-between;gap:20px;font-size:10px;color:var(--muted);border-top:1px solid var(--line);padding-top:21px;margin-top:30px}
@media(max-width:1000px){.content-main{width:calc(100% - 48px)}.content-header{padding:10px 24px;gap:20px}.content-header nav{gap:22px}.header-help{display:none}.learn-hero{gap:35px}.article-layout{grid-template-columns:170px minmax(0,1fr);gap:25px}.article-body{padding:28px}.related-guides{padding-left:195px}.about-layout{grid-template-columns:minmax(0,1fr) 240px}.tool-inputs{grid-template-columns:minmax(0,1fr)}}
@media(max-width:720px){html{scroll-padding-top:130px}.content-header{height:auto;min-height:112px;display:grid;grid-template-columns:minmax(0,1fr);justify-items:center;gap:0;padding:9px 16px 0}.content-brand img{width:135px;height:auto}.content-header nav{justify-content:center;gap:28px;width:100%}.content-header nav a{font-size:12px;padding:10px 0 13px}.content-main{width:calc(100% - 32px);padding:26px 0 42px}.learn-hero{grid-template-columns:minmax(0,1fr);gap:27px;padding:15px 0 37px}.learn-hero h1{font-size:46px}.hero-diagram{padding:5px 23px}.hero-diagram>div{padding-top:16px;padding-bottom:16px}.hero-diagram span{top:18px}.lede{font-size:15px}.guide-grid{grid-template-columns:minmax(0,1fr)}.guide-card{padding:24px}.guide-card h2{font-size:23px}.section-heading{display:block}.section-heading h2{margin-bottom:9px}.reader-note{grid-template-columns:minmax(0,1fr);gap:19px;margin:35px 0;padding:26px 0}.publisher-strip{display:block;padding:23px}.publisher-strip>a{display:inline-block;margin-top:15px}.breadcrumbs{margin-bottom:25px}.article-header{margin-bottom:23px}.article-header h1{font-size:36px}.byline{font-size:10px;gap:6px 15px}.article-layout{display:flex;flex-direction:column;gap:22px}.article-toc{position:static;width:100%;background:#edf3f7;border-radius:9px;padding:17px}.article-toc nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px 12px}.toc-back{display:none}.article-body{width:100%;padding:24px 20px}.article-body h2{font-size:22px}.article-body p,.article-body li{font-size:14px}.article-body section{scroll-margin-top:140px}.map-example{margin-bottom:27px}.learning-tool{padding:20px 15px!important}.related-guides{padding-left:0;margin-top:30px}.about-layout{grid-template-columns:minmax(0,1fr)}.contact-card{max-width:none}.method-flow{grid-template-columns:minmax(0,1fr);gap:10px;margin:25px 0}.method-flow>div{padding:20px}.method-flow h2{margin:8px 0}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:25px}.content-footer{padding:28px 20px 20px}.footer-bottom{flex-direction:column;gap:6px}.not-found{padding:45px 0 80px}th,td{padding:10px;font-size:11px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

@media(max-width:720px){.catalog-section{padding:22px 14px}.catalog-table table{min-width:0;table-layout:fixed}.catalog-table th,.catalog-table td{padding:10px 4px;font-size:10px;overflow-wrap:anywhere}.catalog-table th:first-child{width:46%}.catalog-table th:nth-child(2),.catalog-table td:nth-child(2){display:none}.catalog-table caption{font-size:10px;line-height:1.75;padding:12px 9px}.catalog-controls label{width:100%;min-width:0}.catalog-controls input{width:100%}.coverage-yes{font-size:10px;padding:3px 5px}}

html:not([data-learning-ui="ready"]) .learning-tool form,html:not([data-learning-ui="ready"]) .catalog-controls{display:none}