:root{--ink:#142a40;--muted:#51677c;--accent:#145a8d;--line:#dce4ec;--light:#f2f6fa;--navy:#102c48;--cyan:#a0dfef;--gold:#f3c744;--font:Inter,"Helvetica Neue",Arial,sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);background:#fff;font-family:var(--font);font-size:16px;line-height:1.65}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #2179ae;outline-offset:5px}.wrap{max-width:1240px;margin:0 auto;padding-left:48px;padding-right:48px}.site-header{border-bottom:1px solid var(--line);background:#fff}.header-inner{min-height:88px;display:flex;align-items:center;gap:35px}.wordmark{display:flex;align-items:center;gap:12px;font-weight:750;font-size:19px;color:var(--ink);letter-spacing:-.5px}.brand-icon{display:grid;place-items:center;background:var(--navy);color:white;width:31px;height:31px;border-radius:7px;font-family:Georgia,serif;font-style:italic}.header-inner nav{margin-left:auto;display:flex;gap:28px;font-size:14px}.header-inner nav a{color:var(--muted)}.version{font-size:12px;letter-spacing:.03em;border:1px solid var(--line);border-radius:20px;padding:4px 12px;white-space:nowrap}.hero{display:grid;grid-template-columns:1.05fr 1fr;gap:65px;padding-top:75px;padding-bottom:60px;align-items:center}.eyebrow{font-size:12px;font-weight:750;letter-spacing:.16em;color:var(--accent);margin:0 0 20px}h1{font-size:clamp(42px,4.3vw,60px);line-height:1.08;letter-spacing:-2.9px;margin:0 0 22px;font-weight:800}h1 span{color:var(--accent)}.hero-subtitle{font-size:clamp(24px,2.2vw,31px);line-height:1.35;letter-spacing:-.6px;margin:0 0 22px;font-weight:500}.hero-description{max-width:430px;color:var(--muted);font-size:17px;margin-bottom:26px}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:29px}.button{display:inline-flex;align-items:center;justify-content:center;gap:17px;padding:11px 17px;border-radius:5px;border:1px solid var(--line);font-weight:600;font-size:14px;min-height:46px}.button:hover{text-decoration:none;filter:brightness(.95)}.primary{background:var(--navy);border-color:var(--navy);color:#fff}.secondary{color:var(--ink);background:#fff}.authors{font-size:14px;line-height:1.8;margin:0 0 7px}.affiliation{font-size:12px;color:var(--muted);line-height:1.8;margin:0;max-width:450px}.hero-figure{margin:0;border:1px solid var(--line);border-radius:8px;overflow:hidden;box-shadow:0 20px 45px #16334d09;transform:rotate(1deg)}.figure-head{background:var(--navy);color:#d1e9f5;padding:13px 18px;font-size:10px;letter-spacing:.1em;display:flex;justify-content:space-between;gap:10px}.hero-figure img{display:block;width:100%;height:auto;aspect-ratio:1.19;object-fit:contain;padding:12px}.hero-figure figcaption{font-size:13px;color:var(--muted);padding:17px 22px;border-top:1px solid var(--line);line-height:1.6}.stats{display:grid;grid-template-columns:repeat(4,1fr);padding-top:26px;padding-bottom:28px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);gap:26px}.stats div{display:flex;flex-direction:column;gap:1px}.stats strong{font-size:35px;font-weight:600;letter-spacing:-1px}.stats span{font-size:13px;color:var(--muted)}.section{padding-top:75px;padding-bottom:70px}h2{font-size:36px;line-height:1.2;letter-spacing:-1.2px;font-weight:650;margin:0 0 22px}.section-intro{font-size:17px;color:var(--muted);max-width:715px;margin:0 0 32px}.footer{display:flex;justify-content:space-between;gap:24px;font-size:13px;color:var(--muted);padding-top:27px;padding-bottom:27px;border-top:1px solid var(--line)}.skip-link{position:absolute;top:-100px;left:15px;padding:10px;background:#fff;z-index:99}.skip-link:focus{top:12px}
@media(max-width:900px){.wrap{padding-left:28px;padding-right:28px}.hero{gap:30px;padding-top:45px}.header-inner{gap:18px}.header-inner nav{gap:18px}.version{display:none}h1{letter-spacing:-2px}.hero-description{font-size:16px}.hero-figure{transform:none}.stats{gap:20px}.stats strong{font-size:30px}}
@media(max-width:650px){.wrap{padding-left:22px;padding-right:22px}.header-inner{min-height:72px}.wordmark{font-size:16px}.header-inner nav{gap:16px;font-size:13px}.header-inner nav a:nth-child(2){display:none}.hero{grid-template-columns:1fr;gap:32px;padding-top:36px;padding-bottom:34px}h1{font-size:43px;letter-spacing:-2px}.hero-subtitle{font-size:26px}.hero-description{max-width:none}.hero-actions{margin-bottom:24px}.hero-figure{max-width:470px;width:100%;justify-self:center}.stats{grid-template-columns:repeat(2,1fr);gap:18px 20px;padding-top:20px;padding-bottom:24px}.stats strong{font-size:30px}.section{padding-top:47px;padding-bottom:45px}h2{font-size:30px}.footer{flex-direction:column;gap:8px}.eyebrow{font-size:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
.example-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;align-items:start}.example-card{border:1px solid var(--line);border-radius:7px;overflow:hidden;background:#fff}.example-meta{display:flex;justify-content:space-between;align-items:center;padding:16px 22px;font-size:13px;color:var(--muted);border-bottom:1px solid var(--line)}.subset-badge{font-size:12px;padding:2px 9px;background:var(--light);border-radius:4px}.hard-badge{background:#e5eef7;color:#224b73}.example-image{height:295px;display:block;background:#fff;border-bottom:1px solid var(--line);padding:20px}.example-image img{width:100%;height:100%;object-fit:contain;transition:transform .2s}.example-image:hover img{transform:scale(1.02)}.example-body{padding:23px 25px 10px}h3{font-size:21px;font-weight:650;line-height:1.35;letter-spacing:-.35px;margin:0 0 12px}.example-description{color:var(--muted);font-size:15px;min-height:50px;margin:0 0 22px}.example-body details{border-top:1px solid var(--line)}summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:14px;font-weight:600;padding:13px 0}summary::-webkit-details-marker{display:none}summary>span{font-size:21px;font-weight:400;color:var(--accent)}details[open]>summary>span{transform:rotate(45deg)}.question-text{font-size:16px;line-height:1.8;overflow-wrap:anywhere;padding-bottom:6px}.question-text p{margin:0 0 16px}.question-text .katex{font-size:1.04em}.katex-display{overflow-x:auto;overflow-y:hidden;padding:6px 0}.answer-content{padding:0 0 19px}.answer-label{font-size:12px;color:var(--muted);margin:0 0 7px}.reference-answer{font-size:14px;line-height:1.7;word-break:break-word}.small-note{font-size:14px;line-height:1.75;color:var(--muted);margin-top:22px}.composition-band{background:var(--navy);color:#fff;padding:56px 0}.composition-inner{display:grid;grid-template-columns:1.3fr 1fr;gap:85px;align-items:center}.composition-inner .eyebrow{color:var(--cyan)}.composition-inner h2{font-size:30px;letter-spacing:-.7px}.composition-inner p:not(.eyebrow){color:#c4d6e5;font-size:15px;max-width:450px;margin-bottom:0}.composition-map{padding:23px;border:1px solid #60819f;border-radius:6px}.set-title{display:flex;justify-content:space-between;gap:12px}.set-title strong{font-size:20px}.set-title span{font-size:14px;color:#c4d6e5}.composition-map p{margin-top:5px!important;font-size:13px!important}.nested-set{background:#224762;border-left:3px solid var(--gold);padding:15px 18px;margin-top:24px;display:flex;gap:8px;flex-direction:column}.nested-set strong{font-size:18px}.nested-set span{font-size:13px;color:#d1e6f4}.results-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;margin-top:35px}.result-filters{display:flex;flex-wrap:wrap;gap:8px}.result-filters button{border:1px solid var(--line);border-radius:5px;padding:9px 15px;font-size:14px;background:#fff;color:var(--muted);cursor:pointer}.result-filters button[aria-pressed=true]{background:var(--navy);color:#fff;border-color:var(--navy)}.table-unit{font-size:13px;color:var(--muted)}.results-context{font-size:14px;color:var(--muted);margin:18px 0}.table-scroll{overflow-x:auto;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}table{width:100%;border-collapse:collapse;white-space:nowrap;font-variant-numeric:tabular-nums}th,td{text-align:right;padding:18px 19px;font-size:15px}thead{background:var(--light)}thead th{font-size:13px;font-weight:650;color:var(--muted)}th:first-child{text-align:left;padding-left:20px}tbody th{font-weight:550}tbody tr+tr{border-top:1px solid var(--line)}tbody td:nth-last-child(3){font-weight:750;color:var(--accent)}tr[hidden]{display:none}.js-ready .context-column{display:none}.metric-definitions{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding-top:18px}.metric-definitions p{display:flex;flex-direction:column;font-size:13px;margin:0;color:var(--muted)}.metric-definitions strong{font-weight:650;font-size:14px;color:var(--ink);margin-bottom:3px}.finding{display:flex;gap:24px;padding:29px 30px;margin-top:36px;background:var(--light);border-left:3px solid var(--accent)}.finding-marker{font-size:25px;color:var(--accent)}.finding h3{font-size:20px}.finding p{font-size:15px;color:var(--muted);margin:0 0 10px}.finding a{font-size:14px}.resource-band{background:#f4f7fa;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.resource-heading{display:flex;justify-content:space-between;align-items:center;gap:20px}.release-badge{font-size:12px;color:var(--muted);border:1px solid #bdcbd8;border-radius:20px;padding:5px 13px;white-space:nowrap}.resources-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:21px}.resources-grid article{padding:25px 0 24px;border-top:2px solid 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.section-intro{font-size:15px}.contact{font-size:15px}.citation-box{background:var(--light);border:1px solid var(--line);border-radius:6px;padding:23px;min-width:0}.citation-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:19px;color:var(--muted);font-size:12px;letter-spacing:.09em}.citation-top button{font-size:13px;letter-spacing:0;cursor:pointer;border:1px solid #c7d3df;color:var(--ink);background:#fff;padding:7px 12px;border-radius:4px}.citation-box>a{font-size:13px}.citation-box pre{font-size:12px}.citation-box #copy-status{font-size:13px;color:var(--accent);margin:10px 0;min-height:21px}.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:900px){.composition-inner{gap:35px}.quickstart{grid-template-columns:1fr}.citation-section{gap:30px}.resources-grid{gap:18px}.resource-heading{align-items:flex-start;flex-direction:column;margin-bottom:25px}.example-image{height:265px}.example-body{padding-left:20px;padding-right:20px}.metric-definitions{grid-template-columns:repeat(2,1fr);row-gap:14px}.header-inner nav{gap:18px}.affiliation{font-size:13px}}
@media(max-width:650px){.example-grid,.composition-inner,.resources-grid,.citation-section{grid-template-columns:1fr}.example-image{height:285px}.example-description{min-height:0}.example-grid{gap:22px}.composition-band{padding:37px 0}.composition-inner{gap:28px}.composition-inner h2{font-size:27px}.set-title{flex-wrap:wrap}.results-toolbar{margin-top:25px}.result-filters{gap:7px}.result-filters button{font-size:13px;padding:9px 11px}.table-unit{display:none}th,td{font-size:14px;padding:15px 14px}.finding{padding:23px 20px;gap:12px}.finding-marker{display:none}.resources-grid{gap:4px}.resources-grid p{min-height:0}.quickstart{padding:20px;gap:15px}.quickstart pre{font-size:12px}.citation-box{padding:20px}.header-inner nav a:nth-child(2){display:none}.header-inner nav a:nth-child(4){display:none}.header-inner nav{font-size:13px;gap:16px}.hero-figure .figure-head{font-size:10px}.affiliation{font-size:13px;line-height:1.7}.citation-box pre{font-size:12px}}
@media(prefers-reduced-motion:reduce){.example-image img{transition:none}}