@charset "UTF-8";
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*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 var(--font-sans)}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}a:focus-visible{outline:2px solid var(--accent);outline-offset:5px}.skip{position:absolute;top:-100px;left:20px;background:#fff;padding:10px;z-index:20}.skip:focus{top:5px}.site-header,main,.site-footer{max-width:1180px;margin-inline:auto}.site-header{display:flex;align-items:center;justify-content:space-between;padding:26px 35px;border-bottom:1px solid var(--line);gap:24px}.wordmark{display:inline-flex;align-items:center;gap:10px;font:600 25px var(--font-serif);letter-spacing:-.04em}.wordmark img{display:block}.site-header nav{display:flex;flex-wrap:wrap;gap:26px;align-items:center}.site-header nav a{font-size:12px;letter-spacing:.02em;color:#415156}.site-header nav .language{border:1px solid var(--line);border-radius:40px;padding:5px 12px}main{padding-inline:35px}.intro{padding:116px 0 110px;max-width:920px}.overline,.section-label span{font-size:10px;letter-spacing:.16em;font-weight:700;color:var(--accent)}.intro h1{font:normal clamp(43px,6.4vw,79px)/1.13 var(--font-serif);letter-spacing:-.055em;margin:24px 0 29px}.intro em{font-weight:400;color:var(--accent)}.lead{max-width:690px;font-size:17px;line-height:1.8;color:var(--muted)}.cta-row{display:flex;gap:30px;flex-wrap:wrap;margin-top:37px}.cta-primary,.cta-secondary{font-size:13px;padding-bottom:8px;border-bottom:1px solid var(--ink)}.cta-secondary{color:var(--muted);border-color:var(--line)}.rule{border-top:1px solid var(--line)}.content-section{padding:76px 0;border-bottom:1px solid var(--line)}.section-label{display:flex;gap:55px;align-items:baseline;margin-bottom:35px}.section-label span{min-width:173px}.section-label h2{font:normal clamp(32px,4vw,44px)/1.22 var(--font-serif);letter-spacing:-.035em;margin:0}.research-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.research-grid article{border:1px solid var(--line);padding:28px;display:flex;flex-direction:column;min-height:265px;background:#fcfcfa}.article-number{font:13px var(--font-serif);color:var(--accent)}.research-grid h3{font:normal 26px/1.3 var(--font-serif);letter-spacing:-.025em;margin:30px 0 12px}.research-grid p{font-size:13px;color:var(--muted);margin:0 0 25px}.research-grid a{font-size:12px;margin-top:auto;text-decoration:underline;text-underline-offset:5px;color:var(--accent)}.evidence-layout{display:grid;grid-template-columns:1fr 1fr;gap:85px}.evidence-lede{font:normal 25px/1.55 var(--font-serif);margin:0;max-width:440px}.validation-steps{padding:0;margin:0;list-style:none}.validation-steps li{display:flex;gap:25px;border-top:1px solid var(--line);padding:16px 0}.validation-steps li:last-child{border-bottom:1px solid var(--line)}.validation-steps span{font:14px var(--font-serif);color:var(--accent)}.validation-steps h3{font-size:14px;font-weight:600;margin:0 0 3px}.validation-steps p{font-size:12px;color:var(--muted);margin:0}.fineprint{font-size:11px;color:var(--muted);margin:25px 0 0}.publication-panel{background:var(--panel);display:flex;justify-content:space-between;gap:40px;align-items:end;padding:37px 40px}.publication-panel h3{font:normal 29px/1.35 var(--font-serif);margin:12px 0}.publication-panel p:not(.overline){color:var(--muted);font-size:13px;max-width:590px}.publication-panel a{font-size:12px;white-space:nowrap;text-decoration:underline;text-underline-offset:5px}.site-note{padding:90px 0 100px}.site-note h2{font:normal 32px/1.3 var(--font-serif);margin:0 0 10px}.site-note p{font-size:13px;color:var(--muted)}.site-note a{font-size:12px;text-decoration:underline;text-underline-offset:4px}.site-footer{padding:25px 35px 40px;display:flex;align-items:center;border-top:1px solid var(--line);gap:30px}.site-footer>span{font:22px var(--font-serif)}.site-footer p{font-size:11px;color:var(--muted);margin:0}.site-footer div{margin-left:auto;display:flex;gap:20px;font-size:11px}.page-main{padding-top:72px;padding-bottom:100px;max-width:860px}.page-main h1{font:normal clamp(40px,5vw,60px)/1.2 var(--font-serif);letter-spacing:-.045em;margin:17px 0 25px}.page-main h2{font:normal 27px/1.3 var(--font-serif);margin-top:45px}.page-main p,.page-main li{font-size:15px;line-height:1.9;color:#47565c}.page-main a{text-decoration:underline;text-underline-offset:4px}.page-main .intro-copy{font:normal 24px/1.6 var(--font-serif);color:var(--ink)}.page-main .small-note{font-size:12px;color:var(--muted)}.page-main ul{padding-left:22px}.language-return{font-size:12px;margin-left:12px;color:var(--accent);text-decoration:underline;text-underline-offset:3px}#main:focus{outline:none}
@media(max-width:760px){.site-header{padding:20px;align-items:flex-start;flex-wrap:wrap}.site-header nav{gap:14px 19px}.site-header nav a{font-size:11px}main{padding-inline:20px}.intro{padding:73px 0 75px}.intro h1{font-size:clamp(41px,10vw,62px)}.lead{font-size:15px}.section-label{display:block}.section-label h2{margin-top:13px}.research-grid,.evidence-layout{grid-template-columns:1fr;gap:14px}.research-grid article{min-height:225px}.evidence-lede{margin-bottom:23px}.content-section{padding:51px 0}.publication-panel{display:block;padding:25px}.publication-panel a{display:inline-block;margin-top:20px;white-space:normal}.site-note{padding:60px 0}.site-note h2{font-size:28px}.site-footer{padding-inline:20px;flex-wrap:wrap}.site-footer div{margin-left:0;width:100%}.page-main{padding-top:46px}.language-return{margin-left:0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

/* Source-indexed English research library (bibliographic, never machine-translated). */
.library-main{max-width:1180px;padding-top:85px;padding-bottom:110px}.library-main h1{font:normal clamp(42px,5vw,64px)/1.18 var(--font-serif);letter-spacing:-.045em;margin:15px 0 18px}.library-lede{max-width:760px;font:normal 22px/1.6 var(--font-serif);color:#3d5355}.library-metrics{display:flex;flex-wrap:wrap;gap:12px 27px;margin:30px 0 20px;border-block:1px solid var(--line);padding:13px 0;font-size:12px;color:var(--accent)}.library-notice{font-size:12px;color:var(--muted);max-width:850px}.library-notice a{text-decoration:underline;text-underline-offset:3px}.index-list{border-top:1px solid var(--line);margin-top:43px}.index-item{padding:25px 0 29px;border-bottom:1px solid var(--line);scroll-margin-top:60px}.index-top{display:flex;align-items:center;gap:11px}.index-counter{font:14px var(--font-serif);color:var(--accent);margin-right:12px}.index-tag{border:1px solid var(--line);padding:1px 7px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-size:10px}.index-item h2{font:normal clamp(20px,2.3vw,27px)/1.4 var(--font-serif);max-width:980px;margin:14px 0 9px;letter-spacing:-.016em}.index-meta{font-size:12px;color:var(--muted);margin:0 0 12px}.index-links{display:flex;gap:22px;flex-wrap:wrap}.index-links a{font-size:12px;color:var(--accent);text-decoration:underline;text-underline-offset:4px}@media(max-width:760px){.library-main{padding-top:55px;padding-bottom:65px}.library-lede{font-size:18px}.index-item{padding-block:22px}.index-item h2{font-size:22px}}