:root{--accent:#294d72;--bg:#fff;--ink:#202a33;--muted:#5b6772;--line:#dfe4e8;--tint:#f5f7f9;--width:1080px;--body-size:16px}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--ink);font:var(--body-size)/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}a{color:var(--accent);text-underline-offset:4px}button,input,textarea{font:inherit}button{cursor:pointer}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #658cac;outline-offset:4px}button:disabled{cursor:default}img{max-width:100%;height:auto}.container{width:min(calc(100% - 64px),var(--width));margin:auto}.skip{position:fixed;top:-80px;padding:10px;background:#fff;z-index:99}.skip:focus{top:0}.topbar{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:var(--bg)}.nav{min-height:64px;display:flex;align-items:center;justify-content:space-between;gap:28px}.wordmark{color:var(--ink);font-size:14px;font-weight:650;text-decoration:none;letter-spacing:-.2px}.navlinks{display:flex;align-items:center;gap:20px;font-size:12px;white-space:nowrap;overflow:auto}.navlinks a{color:var(--muted);text-decoration:none}.navlinks a:hover{color:var(--accent)}.hero{padding:86px 0 54px;text-align:center}.eyebrow{display:block;font-size:11px;font-weight:650;color:var(--accent);letter-spacing:1.8px;text-transform:uppercase;line-height:1.5}.hero h1{text-wrap:balance;font-family:Georgia,"Times New Roman",serif;font-size:clamp(38px,4.8vw,61px);line-height:1.12;letter-spacing:-2.2px;font-weight:400;max-width:900px;margin:23px auto 14px}.hero .subtitle{font-size:clamp(18px,2.2vw,24px);font-weight:400;margin:0 0 22px;letter-spacing:-.5px}.hero .summary{max-width:715px;margin:0 auto;color:var(--muted);font-size:17px;line-height:1.7}.authors{margin:23px auto 0;white-space:pre-line}.affiliations{font-size:13px;color:var(--muted);white-space:pre-line}.hero-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-top:28px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#fff;border:1px solid #cfd7de;border-radius:4px;padding:8px 17px;color:var(--ink);font-size:13px;text-decoration:none;min-height:40px}.button.primary{background:var(--accent);border-color:var(--accent);color:white}.button:hover{filter:brightness(.96)}.overview{border-top:1px solid var(--line);padding-top:32px}.overview-lead{display:grid;grid-template-columns:1fr 1.35fr;gap:48px;align-items:start}.overview h2{font-family:Georgia,"Times New Roman",serif;font-size:29px;font-weight:400;line-height:1.3;letter-spacing:-.5px;margin:0}.overview-lead p{font-size:15px;color:var(--muted);margin:0}.overview .paper-figure{max-width:850px;margin:30px 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var(--line);margin-top:35px}.stat{padding-left:24px;border-left:1px solid var(--line)}.stat:first-child{padding-left:0;border:0}.stat strong{display:block;font-size:30px;font-weight:500;color:var(--accent);line-height:1.2;letter-spacing:-1px}.stat span{font-size:12px;color:var(--muted)}.abstract{margin-top:20px;padding:17px 0;border-bottom:1px solid var(--line)}.abstract summary{font-size:13px;font-weight:600;cursor:pointer;color:var(--accent)}.abstract p{max-width:900px;color:var(--muted);font-size:14px;margin:18px 0 4px}.findings{padding:36px 0 44px}.findings h2{font-size:13px;letter-spacing:1.6px;text-transform:uppercase;margin:0 0 24px;color:var(--accent)}.finding-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.finding{text-decoration:none;color:inherit;padding-top:14px;border-top:2px solid var(--accent)}.finding .number{font-size:11px;color:var(--muted)}.finding h3{font-size:17px;line-height:1.5;font-weight:600;margin:7px 0 9px;letter-spacing:-.2px}.finding p{font-size:13px;line-height:1.7;color:var(--muted);margin:0}.finding .read-more{display:block;font-size:12px;color:var(--accent);margin-top:12px}.finding:hover .read-more{text-decoration:underline}.paper-section{border-top:1px solid var(--line);padding:58px 0}.section-head{max-width:860px}.section-head h2{font:400 clamp(27px,3.2vw,37px)/1.23 Georgia,"Times New Roman",serif;letter-spacing:-.7px;margin:15px 0 18px}.section-intro{color:var(--muted);margin:0;line-height:1.8}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;margin-top:28px}.card{padding:20px 0 0;border-top:1px solid var(--line)}.card h3{font-size:15px;line-height:1.5;margin:0 0 9px;font-weight:650}.card p{font-size:14px;line-height:1.8;color:var(--muted);margin:0}.section-note{margin:27px 0 0;padding:16px 20px;background:var(--tint);font-size:13px;color:var(--muted);border-left:2px solid #c4d2de}.figure-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px;border-bottom:1px solid var(--line);padding-bottom:12px}.figure-tab{background:transparent;border:1px solid transparent;padding:7px 14px;font-size:13px;border-radius:4px;color:var(--muted)}.figure-tab[aria-pressed=true]{background:var(--tint);color:var(--accent);border-color:var(--line);font-weight:600}.quotes{display:grid;grid-template-columns:1fr 1fr;gap:38px;margin-top:35px}.quotes blockquote{margin:0;padding:0 0 0 20px;border-left:2px solid #bccbd8}.quotes p{font-family:Georgia,"Times New Roman",serif;font-size:19px;line-height:1.6;margin:0}.quotes cite{display:block;font-style:normal;font-size:11px;color:var(--muted);margin-top:12px}.citation{padding:36px 0;border-top:1px solid var(--line)}.citation h2{font-size:22px;font-weight:500}.citation pre{font-size:12px;background:var(--tint);padding:22px;white-space:pre-wrap;overflow-wrap:anywhere}.footer{border-top:1px solid var(--line);padding:26px 0 38px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.footer a{color:var(--muted)}[hidden]{display:none!important}dialog{width:min(1400px,96vw);max-height:94vh;overflow:auto;border:1px solid var(--line);border-radius:7px;padding:24px;color:var(--ink)}dialog::backdrop{background:rgba(20,29,37,.7)}.dialog-bar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:22px;font-size:13px}.dialog-bar button{background:white;border:1px solid var(--line);border-radius:4px;padding:7px 15px}dialog img{display:block;width:100%}dialog p{font-size:13px;color:var(--muted)}
@media(min-width:1400px){.hero{padding-top:100px}}
@media(max-width:1000px){.nav{display:block;padding:12px 0 10px}.wordmark{display:block;margin-bottom:5px}.navlinks{gap:23px}.hero{padding-top:58px}.overview-lead{gap:30px}.cards{gap:18px}}
@media(max-width:650px){.container{width:calc(100% - 36px)}.hero{padding:44px 0 36px}.hero h1{text-wrap:balance;letter-spacing:-1.2px}.hero .summary{font-size:15px}.hero .subtitle{font-size:18px}.overview-lead{grid-template-columns:1fr;gap:14px}.overview h2{font-size:26px}.finding-grid,.cards,.quotes{grid-template-columns:1fr;gap:22px}.findings{padding-bottom:34px}.stats{grid-template-columns:1fr 1fr;row-gap:24px}.stat:nth-child(3){padding-left:0;border:0}.stat strong{font-size:27px}.stat span{font-size:11px}.paper-section{padding:39px 0}.section-head h2{font-size:29px}.section-intro{font-size:15px}.figure-button{padding:7px}.zoom-hint{font-size:9px;bottom:4px;right:4px}.paper-figure figcaption{font-size:11px}.figure-tab{font-size:12px;padding:6px 9px}.section-note{padding:14px 16px}.footer{display:block}.footer span{display:block;margin-bottom:5px}.quotes p{font-size:18px}dialog{padding:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.button.coming-soon{background:#f4f6f8;color:#66737f;border-color:#dce2e7;opacity:1}.button.coming-soon:hover{filter:none}

/* Light 3T colors, shared by principles and evaluation metrics. */
.metric-tc{--metric-bg:#eef3fb;--metric-ink:#345b91;--metric-line:#8ca8cc}
.metric-ta{--metric-bg:#eef6ef;--metric-ink:#376b49;--metric-line:#90b69a}
.metric-tr{--metric-bg:#fbf0f0;--metric-ink:#944c4d;--metric-line:#c59a9b}
.card.metric-card{background:var(--metric-bg);border-top:2px solid var(--metric-line);border-radius:5px;padding:20px 21px 22px}
.card.metric-card h3{color:var(--metric-ink)}
.author-name{display:inline-block;white-space:nowrap}
.affiliations{margin:8px 0 0}