:root{color-scheme:light;--bg:#ebe9e1;--ink:#111111;--stone:#c9c7c0;--muted:#55544f;--line:#aaa8a0;--panel:#e0ded5;--soft:#d4d2c9}
@media(prefers-color-scheme: dark){:root{color-scheme:dark;--bg:#111111;--ink:#ebe9e1;--stone:#343430;--muted:#b7b5ad;--line:#575650;--panel:#20201d;--soft:#292925}.logo-light{display:none!important}.logo-dark{display:block!important}}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-underline-offset:4px}button,input,select{font:inherit;color:inherit;border-radius:0}button{cursor:pointer}button:disabled{opacity:.42;cursor:default}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--ink);outline-offset:4px}[hidden]{display:none!important}.wrap{max-width:1550px;margin:auto;padding:28px}.skip{position:absolute;left:28px;top:-100px;background:var(--bg);padding:16px;z-index:10}.skip:focus{top:12px}header{border-bottom:2px solid var(--ink);padding-bottom:16px;display:flex;justify-content:space-between;gap:24px;align-items:center}.logo{width:185px;height:auto;display:block}.logo-dark{display:none}header nav{display:flex;gap:22px;flex-wrap:wrap}.eyebrow,header nav,.label,.badge,footer{font-size:11px;line-height:1.5;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.eyebrow{margin:0 0 26px}.hero{padding:62px 0 44px;display:grid;grid-template-columns:minmax(0,1.4fr) minmax(280px,1fr);gap:48px;align-items:end}h1{font-size:clamp(3rem,7.6vw,7.5rem);line-height:.92;letter-spacing:-.065em;text-transform:uppercase;margin:0;font-weight:900}.hero-aside{border-left:2px solid var(--ink);padding-left:24px}.hero-aside p{font-size:17px;line-height:1.5;margin:0 0 12px}.hero-aside .label{font-size:10px}.hero-aside svg{width:100%;display:block}.hero-aside .fine{font-size:12px}.lead{font-size:clamp(1.25rem,2.3vw,2rem);line-height:1.35;max-width:1100px;margin:0 0 35px;letter-spacing:-.025em}.numbers{display:grid;grid-template-columns:repeat(3,1fr);border-top:2px solid var(--ink);border-bottom:1px solid var(--line)}.number{padding:20px 0;display:flex;align-items:baseline;gap:16px}.number strong{font-size:44px;line-height:1;letter-spacing:-.05em}.number span{font-size:12px;color:var(--muted)}.block{border-top:2px solid var(--ink);margin-top:65px;padding-top:18px}.section-head{display:grid;grid-template-columns:1fr 2fr;gap:40px;margin-bottom:28px}h2{font-size:clamp(1.7rem,3vw,2.6rem);letter-spacing:-.045em;line-height:1.1;margin:0}.section-head p{font-size:17px;line-height:1.55;margin:0;max-width:800px;color:var(--muted)}h3{font-size:23px;line-height:1.2;letter-spacing:-.035em;margin:0 0 14px}h4{font-size:12px;text-transform:uppercase;letter-spacing:.06em;margin:20px 0 10px}p{line-height:1.6}.fine{font-size:13px;line-height:1.65;color:var(--muted)}.area-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:1px solid var(--line);border-left:1px solid var(--line)}.area-card{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px;display:flex;flex-direction:column;gap:16px;text-decoration:none}.area-card:hover{background:var(--panel)}.area-card h3{margin:0;font-size:23px}.area-card p{font-size:14px;margin:0;color:var(--muted)}.area-card .label{margin-top:auto;font-size:10px}.area-card .group{font:11px 'Courier New',monospace;color:var(--muted)}.lab-selector{display:grid;gap:8px;max-width:420px;margin:0 0 25px}.lab-selector select{min-height:48px;background:var(--ink);color:var(--bg);border:1px solid var(--ink);padding:12px}.laboratory{border:1px solid var(--ink);padding:24px;background:var(--panel)}.lab-toolbar{display:flex;justify-content:space-between;align-items:end;gap:24px;border-bottom:1px solid var(--line);padding-bottom:20px;margin-bottom:20px}.lab-toolbar label{display:grid;gap:8px;max-width:650px;flex:1;font-size:11px;text-transform:uppercase;font-weight:700;letter-spacing:.08em}.lab-toolbar select,.lab-controls input{min-height:44px;border:1px solid var(--ink);padding:10px;background:var(--bg);width:100%}.record-link{font-size:12px;min-height:44px;display:inline-flex;align-items:center}.lab-controls{display:flex;flex-wrap:wrap;gap:10px;align-items:end;margin-bottom:24px}.lab-controls label{display:grid;gap:8px;font-size:12px;min-width:200px;max-width:400px;flex:1}.lab-controls button,.bit-editor button{border:1px solid var(--ink);padding:10px 13px;min-height:44px;background:var(--bg);font-size:12px;font-weight:700}.lab-controls button:hover:not(:disabled){background:var(--ink);color:var(--bg)}.lab-graphic{overflow:auto;background:var(--bg);border:1px solid var(--line);padding:12px}.lab-graphic svg{display:block;width:100%;max-height:520px;min-width:480px}svg line,svg polyline{stroke:var(--ink);stroke-width:1.5;fill:none}svg circle,svg rect.panel,svg rect.bar{stroke:var(--ink);stroke-width:1.5;fill:var(--bg)}svg .bar{fill:var(--stone)!important}svg .filled{fill:var(--ink);stroke:var(--ink)}svg text{fill:var(--ink);font:17px 'Courier New',monospace}svg text.small{font-size:12px}svg .inverse{fill:var(--bg)}svg .accent{stroke-width:4}svg .heavy{font-weight:900}svg .accept-inverse{stroke:var(--bg);fill:none}svg .series{stroke-width:3}svg .series-1{stroke-dasharray:9 5}svg .series-2{stroke-dasharray:2 5}.lab-output{font:13px/1.7 'Courier New',monospace;border-left:3px solid var(--ink);padding-left:16px;margin:22px 0}.lab-note{font-size:12px;color:var(--muted);line-height:1.7;margin:18px 0 0}.table-scroll{overflow:auto;max-height:340px}table{border-collapse:collapse;width:100%;font:12px/1.6 'Courier New',monospace}th{text-align:left;background:var(--soft);position:sticky;top:0}th,td{padding:10px 12px;border:1px solid var(--line);white-space:normal}td{vertical-align:top}.bit-editor{display:flex;flex-direction:column;gap:6px;padding:10px 0}.bit-editor>div{display:flex;gap:6px}.controls{display:grid;grid-template-columns:2fr 1fr auto;gap:16px;align-items:end;margin-bottom:18px}.controls label{display:grid;gap:8px}.controls input,.controls select,.controls button{width:100%;min-height:46px;border:1px solid var(--ink);background:var(--bg);padding:10px 12px}.count{font:12px 'Courier New',monospace;color:var(--muted);margin:18px 0}.catalog{border-top:1px solid var(--ink)}.entry{border-bottom:1px solid var(--line);padding:24px 0;scroll-margin-top:24px}.entry summary{display:grid;grid-template-columns:210px 1fr 20px;gap:20px;cursor:pointer;list-style:none;min-height:44px}.entry summary::-webkit-details-marker{display:none}.entry summary:after{content:'+';font:24px/1 'Courier New',monospace}.entry[open] summary:after{content:'−'}.entry-meta{font:11px/1.7 'Courier New',monospace;color:var(--muted)}.entry-title{font-size:22px;font-weight:700;letter-spacing:-.03em;line-height:1.25}.entry-subtitle{display:block;font:12px/1.6 'Courier New',monospace;letter-spacing:0;color:var(--muted);margin-top:8px}.entry-content{margin-left:230px;margin-top:22px;max-width:1040px}.entry-content>p{font-size:15px}.evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}pre{background:var(--panel);border:1px solid var(--line);padding:16px;max-width:100%;overflow:auto;font:12px/1.5 'Courier New',monospace;margin:0;white-space:pre-wrap;overflow-wrap:anywhere}code{font-family:'Courier New',monospace}.note{border-left:2px solid var(--ink);padding-left:16px;color:var(--muted)}.steps{padding-left:20px;font-size:15px;line-height:1.8}.steps li{margin-bottom:8px}.metadata{font-size:12px;margin:20px 0;color:var(--muted)}.metadata summary{display:list-item;font:12px Arial,sans-serif;min-height:44px;padding:12px 0;cursor:pointer}.metadata summary:after{display:none}.metadata p{margin:10px 0}.entry-links{display:flex;gap:20px;flex-wrap:wrap;margin:18px 0}.entry-links a{font-size:12px;min-height:44px;display:inline-flex;align-items:center}.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}.guide-grid p,.guide-grid li{font-size:15px;line-height:1.7}.definitions{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.definitions div{border-top:1px solid var(--ink);padding-top:16px}.definitions dt{font-size:20px;font-weight:700;letter-spacing:-.025em}.definitions dd{margin:12px 0 0;font-size:15px;line-height:1.65;color:var(--muted)}.downloads{display:grid;grid-template-columns:2fr 1fr 1fr;gap:16px}.download{border:1px solid var(--ink);padding:22px;text-decoration:none;min-height:135px;display:flex;flex-direction:column;justify-content:space-between;gap:20px}.download:first-child{background:var(--ink);color:var(--bg)}.download strong{font-size:20px;letter-spacing:-.035em}.download span{font:12px/1.4 'Courier New',monospace}.sources{display:flex;gap:24px;flex-wrap:wrap;font-size:13px;margin:24px 0}.breadcrumb{font:12px/1.5 'Courier New',monospace;margin:30px 0}.topic-title{font-size:clamp(2.5rem,6.2vw,6rem);max-width:1100px}.topic-intro{max-width:920px;font-size:21px;line-height:1.5;margin:28px 0 0}.topic-page .entry-content{margin-left:0;max-width:none}.topic-page .entry summary{grid-template-columns:150px 1fr 20px}.topic-page .entry-title{font-size:25px}.source-note{max-width:1050px}.reading-path{display:flex;flex-wrap:wrap;gap:12px}.reading-path a{border:1px solid var(--line);min-height:44px;padding:12px;font-size:12px}footer{display:flex;justify-content:space-between;gap:24px;border-top:2px solid var(--ink);margin-top:64px;padding-top:14px;color:var(--muted)}
@media(max-width:1000px){.hero{grid-template-columns:1.3fr 1fr;gap:28px}.area-grid{grid-template-columns:1fr 1fr}.hero h1{font-size:clamp(3rem,7.5vw,6rem)}.entry summary{grid-template-columns:150px 1fr 20px}.entry-content{margin-left:170px}.downloads{grid-template-columns:1fr 1fr}.download:first-child{grid-column:1/-1}}
@media(max-width:640px){.wrap{padding:18px}header{align-items:flex-start;flex-direction:column;gap:18px}header nav{gap:18px}.hero{grid-template-columns:1fr;padding:40px 0 30px;gap:32px}.hero h1{font-size:clamp(3rem,12.6vw,4.8rem)}.hero-aside{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}.hero-aside p{font-size:16px}.eyebrow{margin-bottom:20px}.numbers{grid-template-columns:1fr}.number{padding:16px 0;border-bottom:1px solid var(--line)}.number:last-child{border:0}.number strong{min-width:52px}.section-head{grid-template-columns:1fr;gap:16px}.block{margin-top:48px}.area-grid,.guide-grid,.definitions,.evidence-grid,.downloads{grid-template-columns:1fr}.area-card{padding:22px}.controls{grid-template-columns:1fr}.laboratory{padding:14px}.lab-toolbar{flex-direction:column;align-items:stretch;gap:10px}.lab-toolbar select{max-width:100%}.lab-controls label{max-width:none;min-width:100%}.entry summary,.topic-page .entry summary{grid-template-columns:1fr 20px;gap:12px}.entry-meta{grid-column:1/-1}.entry-title{font-size:21px}.entry-content{margin-left:0}.entry-subtitle{font-size:11px}.download:first-child{grid-column:auto}.topic-title{font-size:clamp(2.25rem,10.5vw,4rem);overflow-wrap:anywhere}.topic-intro{font-size:18px}footer{flex-direction:column;gap:8px}.sources{gap:16px}.lab-graphic svg{max-height:none}.hero-aside svg{max-height:240px}.lab-selector{max-width:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}