:root{--ink:#1b1b1c;--muted:#626267;--rule:#dcdce0;--soft:#f7f7f8;--berry:#ad1853;--berry-dark:#8d1041;--berry-soft:#fbf4f6;--max:1180px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:#fff;color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Helvetica Neue",Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button{font:inherit}
img{max-width:100%;height:auto;display:block}
.shell{width:min(var(--max),calc(100% - 96px));margin-inline:auto}
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.skip-link{position:absolute;left:16px;top:-100px;padding:10px 16px;background:var(--ink);color:#fff;z-index:20}.skip-link:focus{top:12px}
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.site-header{height:78px;border-bottom:1px solid var(--rule);background:rgba(255,255,255,.98);position:sticky;top:0;z-index:10}
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.hero-kicker{margin:0 0 24px}
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.button-dark{background:var(--ink);color:#fff}.button-dark:hover{background:var(--berry);border-color:var(--berry)}.button-light:hover{border-color:var(--berry);color:var(--berry)}
.hero-credit{font-size:14px;margin:49px 0 0;color:#58585e}.hero-credit span{margin:0 10px;color:#a9a9af}.hero-credit a{text-decoration:underline;text-underline-offset:4px}
.opening-figure{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.figure-topline{display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#77777c;padding:18px 0 0}.figure-topline .eyebrow{margin:0;color:#55555b}
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.text-link{font-size:14px;font-weight:650;border-bottom:1px solid var(--ink);padding-bottom:5px}.text-link:hover{color:var(--berry);border-color:var(--berry)}
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.figure-image{padding:12px 0}.figure-caption{font-size:12px;color:#77777c;margin:0 0 18px}
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.metric{padding:34px 30px 37px 0}.metric+.metric{border-left:1px solid var(--rule);padding-left:30px}.metric strong{display:block;font-size:clamp(45px,6vw,72px);font-weight:650;letter-spacing:-.075em;line-height:1.05}.metric strong span{font-size:.44em;letter-spacing:-.04em}.metric h2{font-size:16px;line-height:1.3;letter-spacing:-.02em;font-weight:650;margin:18px 0 4px}.metric p{font-size:13px;line-height:1.55;color:var(--muted);margin:0;max-width:300px}
.section{padding:78px 0;border-top:1px solid var(--rule)}
.section-heading{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.65fr);gap:70px;align-items:end;margin-bottom:54px}.section-heading .eyebrow{margin:0 0 22px}.section-heading h2{font-size:clamp(38px,5vw,68px);letter-spacing:-.07em;line-height:1.07;font-weight:610;margin:0}.section-heading h2 span{color:#77777e}.section-heading>p{max-width:430px;color:var(--muted);font-size:16px;line-height:1.7;margin:0 0 3px}
.method-steps{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}.method-steps article{padding:28px 28px 30px 0}.method-steps article+article{border-left:1px solid var(--rule);padding-left:28px}.step-number{font-size:13px;font-weight:700;color:var(--berry)}.method-steps h3{font-size:22px;letter-spacing:-.04em;line-height:1.2;margin:27px 0 9px}.method-steps p{font-size:14px;color:var(--muted);line-height:1.65;margin:0}
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.evidence-section{background:#fafafa}.tabs{display:flex;gap:0;border-bottom:1px solid var(--rule);overflow-x:auto}.tab{appearance:none;border:0;border-bottom:3px solid transparent;background:transparent;color:#74747b;min-width:max-content;padding:13px 22px 15px;font-size:14px;font-weight:600;cursor:pointer}.tab:first-child{padding-left:0}.tab[aria-selected=true]{color:var(--ink);border-bottom-color:var(--berry)}.tab:hover{color:var(--berry)}
.tab-panel{display:grid;grid-template-columns:minmax(310px,.66fr) minmax(0,1.34fr);gap:44px;align-items:center;padding:49px 0 10px}.tab-panel[hidden]{display:none}.evidence-copy h3{font-size:clamp(29px,3.2vw,43px);line-height:1.14;letter-spacing:-.055em;margin:12px 0 19px}.evidence-copy>p:not(.protocol){color:#5d5d63;margin:0;line-height:1.72}.evidence-copy strong{color:var(--ink)}.evidence-callout{border-top:1px solid var(--rule);border-bottom:1px solid var(--rule);padding:19px 0;display:flex;align-items:center;gap:18px;margin:28px 0 16px}.evidence-callout strong{font-size:39px;line-height:1;letter-spacing:-.065em;color:var(--berry);white-space:nowrap}.evidence-callout span{font-size:13px;color:var(--muted);line-height:1.4}.evidence-copy .protocol{font-size:12px;color:#77777d;line-height:1.55;margin:0}.protocol a{text-decoration:underline;text-underline-offset:2px}.protocol a:hover{color:var(--berry)}.evidence-image{border:1px solid #e7e7e9;background:#fff;padding:26px}.evidence-image img{max-height:440px}
.application-grid{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}.application{padding:30px 28px 30px 0;display:flex;flex-direction:column}.application+.application{border-left:1px solid var(--rule);padding-left:28px}.application-heading h3{font-size:28px;letter-spacing:-.05em;line-height:1.17;max-width:380px;margin:14px 0}.application-heading p{font-size:14px;line-height:1.65;color:var(--muted);max-width:430px;margin:0 0 27px}.application>a{margin-top:auto;padding:16px;border:1px solid #ececef;background:#fff;min-height:190px;display:grid;place-items:center}.application img{max-height:260px}
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.uncertainty-section{grid-column:1/-1;display:grid;grid-template-columns:minmax(0,.66fr) minmax(0,1.34fr);gap:44px;border-top:1px solid var(--rule);padding-top:28px}.uncertainty-section h3{font-size:27px;line-height:1.2;letter-spacing:-.04em;margin:12px 0}.uncertainty-section p{font-size:14px;line-height:1.7;color:var(--muted);margin:0 0 15px}.uncertainty-section .small-label{color:var(--berry);font-size:12px}.uncertainty-section .uncertainty-formula{font-size:19px;color:var(--ink);padding:12px 0;overflow-wrap:anywhere}@media(max-width:850px){.uncertainty-section{grid-template-columns:1fr;gap:12px}}
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