:root{--bg:#f8f7f3;--surface:#fffefa;--ink:#1d2b2c;--muted:#596868;--line:#d9dfda;--accent:#17685f;--soft:#e9f0e9;--warm:#bd4537;--blue:#28669d;--sun:#9a741b;--grid:#dfe4df;--band:rgba(189,69,55,.14);--serif:'Source Serif 4',Georgia,serif;--ui:Inter,system-ui,sans-serif;color-scheme:light}
@media(prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#131d20;--surface:#1b272a;--ink:#e7edE8;--muted:#a5b7b6;--line:#35464a;--accent:#80c6b8;--soft:#203b37;--warm:#f08b72;--blue:#7db8e5;--sun:#d6bd74;--grid:#33464a;--band:rgba(240,139,114,.16);color-scheme:dark}}
:root[data-theme="dark"]{--bg:#131d20;--surface:#1b272a;--ink:#e7ede8;--muted:#a5b7b6;--line:#35464a;--accent:#80c6b8;--soft:#203b37;--warm:#f08b72;--blue:#7db8e5;--sun:#d6bd74;--grid:#33464a;--band:rgba(240,139,114,.16);color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:96px}body{margin:0;background:var(--bg);color:var(--ink);font:18px/1.75 var(--serif)}a{color:var(--accent);text-underline-offset:3px}a:hover{text-decoration-thickness:2px}button,select{font:inherit}button,a,select,summary{touch-action:manipulation}button:focus-visible,a:focus-visible,select:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid var(--accent);outline-offset:4px}.topbar{position:sticky;top:0;z-index:30;height:72px;border-bottom:1px solid var(--line);background:var(--bg);padding:0 40px;display:flex;align-items:center;gap:32px;font-family:var(--ui)}.brand{font-weight:750;color:var(--ink);text-decoration:none;letter-spacing:-.6px;font-size:21px}.brand-dot{display:inline-block;width:9px;height:9px;background:var(--warm);border-radius:50%;margin-left:5px}.topbar-label{font-size:10px;letter-spacing:1.7px;color:var(--muted)}.theme-button{margin-left:auto;font-size:12px;font-weight:600;color:var(--ink);border:1px solid var(--line);border-radius:30px;background:var(--surface);padding:9px 15px;cursor:pointer}.theme-button span{margin-left:12px;font-size:17px}.sidebar{position:fixed;top:115px;left:40px;width:214px;max-height:calc(100vh - 140px);overflow-y:auto;font-family:var(--ui);font-size:12px;line-height:1.6}.sidebar summary{list-style:none;font-size:10px;letter-spacing:1.1px;font-weight:700;text-transform:uppercase;margin-bottom:18px;color:var(--muted)}.sidebar summary span{display:none}.sidebar nav{display:flex;flex-direction:column;gap:4px;border-left:1px solid var(--line)}.sidebar nav a{display:block;padding:7px 13px;text-decoration:none;color:var(--muted);border-left:2px solid transparent;margin-left:-1px}.sidebar nav a:hover,.sidebar nav a.active{color:var(--accent);border-left-color:var(--accent);background:var(--soft)}.sidebar-note{border-top:1px solid var(--line);margin-top:26px;padding-top:18px;font-size:10px;color:var(--muted);line-height:1.8}main{max-width:1000px;margin:0 auto 0 max(292px,calc((100vw - 840px)/2));padding:57px 44px 30px 12px;min-width:0}.hero{margin-bottom:42px}.eyebrow{font:600 10px/1.6 var(--ui);letter-spacing:1.6px;color:var(--accent);margin:0 0 18px}h1{font:650 clamp(38px,4.4vw,64px)/1.08 var(--ui);letter-spacing:-2.8px;margin:0 0 24px}h1 span{color:var(--accent)}.subtitle{max-width:56ch;font-size:20px;line-height:1.6;color:var(--muted);margin:0 0 32px}.hero-answer{border-left:3px solid var(--warm);padding:5px 0 5px 24px;margin:34px 0}.hero-answer .eyebrow{color:var(--warm)}.hero-answer p{font:600 clamp(23px,2.3vw,32px)/1.4 var(--serif);margin:8px 0;max-width:38ch}.stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:30px}.stat-card{border:1px solid var(--line);background:var(--surface);padding:18px 18px 13px;border-radius:3px;min-width:0;display:flex;flex-direction:column;justify-content:space-between;gap:8px}.stat-label{font:500 10px/1.5 var(--ui);color:var(--muted)}.stat-value{font:650 20px/1.4 var(--ui);letter-spacing:-.6px;overflow-wrap:anywhere}.stat-value strong{font-weight:650}.stat-source{font:11px var(--ui)}.edition{font:11px/1.5 var(--ui);color:var(--muted);margin-top:18px}.prose{max-width:76ch;min-width:0}.prose p,.prose ul,.prose ol{margin:20px 0}.prose li{margin:9px 0}.prose h2{font:650 30px/1.28 var(--ui);letter-spacing:-1px;border-top:1px solid var(--line);padding-top:45px;margin:70px 0 26px}.prose h3{font:650 20px/1.45 var(--ui);letter-spacing:-.4px;margin:38px 0 17px}.prose strong{font-weight:650}.prose ul,.prose ol{padding-left:24px}.citation{font:600 10px/1 var(--ui);vertical-align:super;white-space:nowrap;margin-left:2px}.citation a{text-decoration:none}.answer-context{color:var(--muted);font-size:18px}.table-scroll{width:100%;overflow-x:auto;margin:25px 0;border:1px solid var(--line);border-radius:4px}table{border-collapse:collapse;font:12px/1.65 var(--ui);width:100%;background:var(--surface);min-width:520px}th,td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}th{background:var(--soft);font-weight:650;font-size:10px;letter-spacing:.2px}tr:last-child td{border-bottom:0}.chart-card{margin:32px 0;padding:20px 20px 14px;border:1px solid var(--line);border-radius:5px;background:var(--surface);width:100%;min-width:0}.chart-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.chart-heading h4{font:600 14px/1.4 var(--ui);margin:0;color:var(--ink)}.chart{height:370px;width:100%;min-width:0;position:relative}.chart-loading{font:12px var(--ui);color:var(--muted);padding-top:120px;text-align:center}#chart-stripes{height:125px}.chart-card:has(#chart-stripes){padding-top:16px}.chart-card:has(#chart-top-cumulative) .chart,.chart-card:has(#chart-share-temp) .chart{height:480px}.chart-card figcaption{font:10px/1.7 var(--ui);color:var(--muted);padding-top:12px;border-top:1px solid var(--line);overflow-wrap:anywhere}.chart-card figcaption a{color:var(--muted)}.data-link{white-space:nowrap;margin-left:5px}.period-control{font:11px var(--ui);color:var(--muted);display:flex;align-items:center;gap:8px}.period-control select{font:11px var(--ui);padding:7px;background:var(--bg);border:1px solid var(--line);border-radius:4px;color:var(--ink)}.chart-context{font:10px/1.6 var(--ui);color:var(--muted);flex-basis:100%;margin:0!important}.chart-error{font:13px/1.6 var(--ui);padding:70px 12px;color:var(--warm)}.prose details{border:1px solid var(--line);background:var(--surface);border-radius:4px;margin:12px 0;padding:0 22px}.prose summary{font:600 14px/1.6 var(--ui);cursor:pointer;padding:20px 0;list-style:none;display:flex;justify-content:space-between;gap:20px}.prose summary:after{content:'+';color:var(--accent);font-size:20px;line-height:1.2}.prose details[open] summary:after{content:'−'}.prose details[open] summary{border-bottom:1px solid var(--line)}.prose details p{font-size:16px}.timeline{list-style:none;padding:0!important;margin-left:6px!important}.timeline li{border-left:1px solid var(--line);padding:0 0 26px 26px;margin:0;position:relative;display:grid;grid-template-columns:90px 1fr;gap:12px;font-size:16px}.timeline li:before{content:'';position:absolute;left:-4px;top:8px;width:7px;height:7px;border-radius:50%;background:var(--accent)}.timeline-date{font:650 12px/1.8 var(--ui);color:var(--accent)}.references ol{font:12px/1.75 var(--ui);padding-left:29px}.references li{padding:12px 0 12px 5px;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.reading-level{font:600 9px/1.4 var(--ui);padding:3px 6px;border-radius:4px;background:var(--soft);color:var(--accent);display:inline-block;margin-left:5px}.ref-back{text-decoration:none;font-weight:700;margin-right:5px}:target{scroll-margin-top:96px}.references li:target{background:var(--soft)}footer{font:11px/1.8 var(--ui);color:var(--muted);border-top:1px solid var(--line);padding:28px 0;margin-top:65px}footer a{display:inline-block;margin:16px 28px 0 0}.skip-link{position:fixed;top:-60px;left:16px;padding:8px;background:var(--surface);z-index:100;font-family:var(--ui)}.skip-link:focus{top:8px}.noscript{position:fixed;bottom:0;background:var(--surface);border:1px solid var(--line);padding:10px;font:12px var(--ui)}.home main{margin:0 auto;padding:95px 24px;max-width:1000px}.home h1{margin-bottom:54px}.research-card{display:block;max-width:680px;background:var(--surface);border:1px solid var(--line);padding:38px;text-decoration:none;color:var(--ink);border-radius:5px}.research-card:hover{border-color:var(--accent)}.research-card h2{font:650 36px/1.2 var(--ui);letter-spacing:-1px}.research-card p{max-width:48ch;color:var(--muted)}.read-link{display:flex;justify-content:space-between;border-top:1px solid var(--line);padding-top:20px;margin-top:30px;font:600 12px var(--ui);color:var(--accent)}
@media(min-width:1101px){.sidebar summary{pointer-events:none}.sidebar details:not([open]) nav{display:flex}.sidebar details:not([open])>nav{display:flex}}
@media(max-width:1100px){.topbar{padding:0 24px}.sidebar{position:sticky;top:72px;width:100%;left:auto;z-index:20;max-height:none;background:var(--bg);border-bottom:1px solid var(--line);overflow:visible;padding:0 24px}.sidebar summary{margin:0;padding:13px 0;display:flex;justify-content:space-between;cursor:pointer;list-style:none}.sidebar summary span{display:inline}.sidebar nav{max-height:55vh;overflow:auto;padding-bottom:15px}.sidebar-note{display:none}main{max-width:850px;margin:0 auto;padding:40px 24px}.prose{max-width:none}}
@media(max-width:600px){body{font-size:17px;line-height:1.75}.topbar{height:62px;padding:0 16px;gap:10px}.brand{font-size:18px}.topbar-label{display:none}.sidebar{top:62px;padding:0 16px}.sidebar summary{font-size:10px}main{padding:30px 16px 20px}h1{font-size:39px;letter-spacing:-1.9px}.subtitle{font-size:18px}.hero-answer{padding-left:16px;margin:25px 0}.hero-answer p{font-size:25px}.stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.stat-card{padding:13px;min-height:120px}.stat-value{font-size:18px}.stat-label{font-size:9px}.prose h2{font-size:25px;margin-top:53px;padding-top:30px}.prose h3{font-size:19px}.chart-card{padding:15px 8px 12px;margin:26px 0}.chart-heading{padding:0 5px}.chart-heading h4{font-size:12px}.chart{height:330px}.chart-card figcaption{font-size:9px;margin:0 5px}.timeline li{grid-template-columns:1fr;gap:5px;padding-left:20px}.prose details{padding:0 16px}.prose summary{font-size:13px}.references ol{font-size:11px;padding-left:25px}.home main{padding:60px 16px}.research-card{padding:24px}.research-card h2{font-size:29px}.home h1{font-size:37px}.chart-context{font-size:9px}table{min-width:0;font-size:11px}th,td{padding:9px 8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.topbar,.sidebar,.theme-button,.modebar{display:none!important}main{margin:0;padding:0;max-width:none}body{background:white;color:black}.chart-card{break-inside:avoid}.prose details{display:block}.prose details>*{display:block}.references a{color:black}.stats{grid-template-columns:repeat(3,1fr)}}