:root{--paper:#f5f7f2;--surface:#fff;--ink:#22342d;--muted:#5b6d63;--green:#17654f;--soft:#e6efe5;--line:#d8e2d6;--orange:#9d5228;--radius:16px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;line-height:1.75}h1,h2,h3,p,figure{margin:0}h1{font-size:clamp(2.4rem,4.7vw,4.5rem);line-height:1.25;letter-spacing:-.055em;font-weight:730}h1 span{color:var(--green)}h2{font-size:1.45rem;line-height:1.5;letter-spacing:-.035em}h3{font-size:1.05rem;line-height:1.6}p+p{margin-top:12px}a{color:var(--green);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,input,select{font:inherit;color:inherit}button,select{min-height:44px;border:1px solid #b5c6b6;border-radius:8px;background:var(--surface);padding:8px 12px}button{cursor:pointer}button:hover{background:var(--soft);border-color:var(--green)}button:disabled{opacity:.6;cursor:default}select{width:100%;margin-top:7px}label{font-size:.83rem;font-weight:650}input,button,select,a,summary{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid #b97225;outline-offset:4px}[hidden]{display:none!important}.wrap{max-width:1360px;margin:auto;padding:0 44px}.site-header{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:88px;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-size:.8rem;font-weight:750;letter-spacing:.1em;white-space:nowrap}.brand span:last-child{color:var(--muted);font-weight:450}.brand-mark{display:grid;place-items:center;width:30px;height:30px;background:var(--green);border-radius:8px;color:#fff;font-size:1.3rem}.site-header nav{display:flex;gap:23px;font-size:.8rem;flex-wrap:wrap}.site-header nav a{text-decoration:none}.hero{display:grid;grid-template-columns:1.6fr 1fr;gap:65px;padding:60px 0 40px;align-items:center}.eyebrow{color:var(--green);font-size:.68rem;letter-spacing:.12em;font-weight:750;margin-bottom:10px}.intro{max-width:650px;font-size:1rem;color:var(--muted);margin-top:22px}.scope-note{border-left:2px solid #c7d9c5;padding:10px 0 10px 25px;font-size:.86rem}.scope-note p{margin-top:16px}.pill{display:inline-block;border-radius:5px;background:var(--soft);color:var(--green);font-size:.73rem;font-weight:650;padding:4px 10px}.pill.neutral{background:#edf0e9;color:var(--muted)}.small{font-size:.78rem;line-height:1.75;color:var(--muted);font-weight:400}.section-nav{display:flex;gap:28px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding:10px 0 19px;font-size:.84rem}.section-nav a{text-decoration:none}.section-nav b{font-size:.7rem;margin-right:6px;color:var(--muted)}.population-note{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:23px 0 30px;font-size:.85rem;color:var(--muted)}.population-note .eyebrow{margin:3px 0}.population-note strong{color:var(--ink);font-weight:600}.coverage-heading,.section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:20px}.coverage-heading h2{font-size:1rem}.dataset-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.dataset-card{padding:25px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);border-top:3px solid var(--green);min-width:0}.dataset-card.touchd{border-top-color:var(--orange)}.dataset-card h3{font-size:1.2rem}.dataset-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0}.stat-value{display:block;font-size:1.8rem;line-height:1.25;font-variant-numeric:tabular-nums;letter-spacing:-.035em}.stat-label{font-size:.7rem;color:var(--muted)}dl{margin:0}dt{font-size:.75rem;color:var(--muted)}dd{margin:0;font-size:.82rem;overflow-wrap:anywhere}.dataset-meta{display:grid;grid-template-columns:64px 1fr;gap:6px 10px;border-top:1px solid var(--line);padding-top:16px}.dataset-note{border-top:1px solid var(--line);padding-top:13px;margin-top:15px!important}.evidence-section{padding:38px 0;border-bottom:1px solid var(--line)}.two-columns{display:grid;grid-template-columns:1fr 1fr;gap:48px}.two-columns h3{margin-bottom:12px}.two-columns p,.geometry-layout p{font-size:.86rem}.method-note{background:var(--soft);color:#345541;font-size:.8rem;border-radius:8px;padding:12px 16px;margin:22px 0 12px!important}.geometry-layout{display:grid;grid-template-columns:1fr 1.25fr;gap:38px;align-items:start}.formula{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:var(--green);font-size:.83rem!important;background:var(--soft);border-radius:7px;padding:12px 14px;overflow-wrap:anywhere;margin-bottom:16px}.geometry-image{background:#edf1e9;border:1px solid var(--line);border-radius:10px;min-height:220px;display:grid;place-items:center;overflow:hidden}.geometry-image img{display:block;width:100%;height:auto}.geometry-image .empty{max-width:400px;padding:30px;text-align:center}.geometry-layout figcaption{margin-top:10px;white-space:pre-line}.panel{padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);margin-top:36px}.section-description{font-size:.86rem;color:var(--muted);margin-bottom:22px}.controls{display:grid;grid-template-columns:1fr 1fr 1.2fr;gap:20px}.legend{display:flex;gap:12px;flex-wrap:wrap;margin:22px 0 12px}.legend button{display:flex;align-items:center;gap:9px;font-size:.8rem}.legend button[aria-pressed=false]{background:#f3f4f0;color:var(--muted)}.legend button[aria-pressed=false] .swatch{opacity:.3}.swatch{display:inline-block;width:22px;border-top:3px solid var(--green)}.swatch.touchd{border-color:var(--orange);border-top-style:dashed}.chart{width:100%;margin-top:10px;min-height:160px}.chart svg{display:block;width:100%;height:auto;touch-action:pan-y}.chart text{font-family:inherit;font-size:12px;fill:var(--muted)}.chart .axis-title{font-size:12px}.curve-line{fill:none;stroke-width:2.6;stroke-linejoin:round;vector-effect:non-scaling-stroke}.ci-band{opacity:.13}.grid-line{stroke:#e4eae1;stroke-width:1}.probe-line{stroke:#718475;stroke-dasharray:4 4;stroke-width:1}.probe-controls{display:grid;grid-template-columns:1fr 1.4fr;gap:26px;align-items:center;margin-top:12px}.probe-controls label{display:block}.probe-controls output{float:right;font-variant-numeric:tabular-nums}input[type=range]{width:100%;accent-color:var(--green);margin:10px 0 0;min-height:25px}.probe{min-height:48px;margin:12px 0!important;font-size:.82rem;color:var(--green);font-variant-numeric:tabular-nums;white-space:pre-line}.table-scroll{overflow:auto;margin-top:18px;max-width:100%;border:1px solid var(--line);border-radius:9px}table{border-collapse:collapse;width:100%;font-size:.8rem;text-align:left;font-variant-numeric:tabular-nums}caption{text-align:left;padding:13px 15px;color:var(--muted);font-size:.75rem;background:#f9faf7}th,td{padding:12px 15px;border-bottom:1px solid var(--line);vertical-align:top;white-space:nowrap}th{font-weight:650;background:#f0f5ec}tbody tr:last-child td{border-bottom:0}.method-columns{display:grid;grid-template-columns:1fr 1fr 1fr;gap:24px;margin-top:22px}.method-columns p{font-size:.77rem;color:var(--muted);margin:0}.method-columns strong{display:block;color:var(--ink);margin-bottom:5px}details summary{cursor:pointer;font-size:.85rem;font-weight:600;min-height:44px;padding:10px 0}.curve-values{margin-top:8px}.curve-values .table-scroll{max-height:320px;margin-top:0}.example-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:17px}.example-card{min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.example-head{padding:18px 20px;display:flex;justify-content:space-between;gap:15px}.example-head h3{overflow-wrap:anywhere}.example-head .eyebrow{margin-bottom:4px}.score{white-space:nowrap;color:var(--green);font-size:1.2rem;font-variant-numeric:tabular-nums}.score small{display:block;font-size:.64rem;color:var(--muted);text-align:right}.image-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;padding:0 12px}.image-strip figure{min-width:0}.image-well{display:grid;place-items:center;aspect-ratio:4/3;border-radius:5px;background:#edf1e9;overflow:hidden;font-size:.72rem;color:var(--muted);text-align:center;text-decoration:none}.image-well img{width:100%;height:100%;object-fit:contain;display:block}.image-strip figcaption{font-size:.69rem;color:var(--muted);padding:5px 0}.example-meta{display:grid;grid-template-columns:65px 1fr;gap:4px 8px;padding:10px 20px}.example-note{padding:0 20px 13px;white-space:pre-line;overflow-wrap:anywhere}.example-link{display:block;padding:12px 20px;font-size:.76rem;border-top:1px solid var(--line);overflow-wrap:anywhere}.load-more{display:block;margin:24px auto 0;min-width:220px}.claims-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.claim-card{border-left:3px solid #b9ceb9;padding:4px 0 4px 20px;min-width:0}.claim-card p{font-size:.83rem;white-space:pre-line;overflow-wrap:anywhere;margin-top:10px}.claim-card .claim-limit{color:var(--muted);font-size:.78rem}.claim-card a{display:inline-block;margin-top:13px;font-size:.78rem;overflow-wrap:anywhere}.source-links,.downloads{display:flex;flex-wrap:wrap;gap:14px 24px;margin-top:25px;font-size:.81rem}.limitations{margin-top:25px;border-top:1px solid var(--line);padding-top:12px}.limitations ul{font-size:.8rem;color:var(--muted);padding-left:22px;margin:8px 0}.limitations li+li{margin-top:8px}.downloads a{background:var(--soft);padding:8px 12px;border-radius:7px}.status-box{background:var(--soft);padding:22px;border:1px solid var(--line);border-radius:12px;margin-bottom:26px;font-size:.88rem}.status-box button{margin-top:12px}.error{background:#fbefe8;border-color:#d8bca5;color:#84462c}.empty{font-size:.82rem;color:var(--muted);padding:20px 0}.page-footer{display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:.73rem;padding:28px 0 40px}.skip-link{position:absolute;left:15px;top:-80px;background:#fff;padding:10px 18px;z-index:10}.skip-link:focus{top:10px}
.claim-card h3,.dataset-card h3{overflow-wrap:anywhere}
#analysis-context{border-left:3px solid var(--green);margin:0 0 20px!important;overflow-wrap:anywhere}#analysis-label{font-weight:750;font-size:.95rem}#analysis-note{white-space:pre-line}
.comparison-nav{display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;padding:18px 0 0;font-size:.8rem}.comparison-nav a{border:1px solid var(--line);border-radius:7px;padding:6px 12px;text-decoration:none;min-height:40px;display:inline-flex;align-items:center}.comparison-nav a[aria-current=page]{background:var(--green);border-color:var(--green);color:#fff}
@media(min-width:1450px){.hero{padding-top:75px;padding-bottom:50px}}
@media(max-width:950px){.wrap{padding:0 26px}.hero{gap:30px;grid-template-columns:1.3fr 1fr}.site-header{align-items:flex-start;flex-direction:column;padding-top:18px;padding-bottom:18px;gap:12px}.site-header nav{gap:22px}.dataset-stats{grid-template-columns:repeat(2,1fr)}.geometry-layout{grid-template-columns:1fr}.method-columns{grid-template-columns:1fr;gap:15px}.controls{gap:12px}.panel{padding:22px}.two-columns{gap:25px}}
@media(max-width:620px){.wrap{padding:0 18px}.hero{grid-template-columns:1fr;padding:35px 0 25px;gap:25px}.scope-note{padding:0 0 0 18px}.eyebrow{font-size:.62rem;letter-spacing:.08em}.section-nav{gap:12px 20px;font-size:.79rem}.population-note{grid-template-columns:1fr;gap:6px;padding:20px 0}.dataset-grid,.two-columns,.claims-grid,.example-grid{grid-template-columns:1fr}.dataset-stats{grid-template-columns:repeat(4,1fr);gap:8px}.stat-value{font-size:1.45rem}.dataset-card{padding:20px}.section-heading{align-items:flex-start;flex-direction:column;gap:12px}.section-heading label{width:100%}h2{font-size:1.25rem}.coverage-heading{flex-direction:column;align-items:flex-start;gap:4px}.controls{grid-template-columns:1fr}.panel{padding:20px 14px;margin-top:26px}.evidence-section{padding:29px 0}.probe-controls{grid-template-columns:1fr;gap:8px}.chart svg{min-height:230px}.chart text{font-size:14px}.page-footer{flex-direction:column;gap:5px}.source-links{flex-direction:column;gap:10px}.example-head{padding:16px}.geometry-image{min-height:180px}.brand{font-size:.75rem}.site-header nav{font-size:.72rem;gap:16px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
