*{box-sizing:border-box}
html{color-scheme:light;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--page);color:var(--text)}
html[data-theme="dark"]{color-scheme:dark}
body{margin:0;background:radial-gradient(800px 460px at 8% -8%,var(--accent-soft),transparent 70%),var(--page);color:var(--text)}
a{color:var(--accent);overflow-wrap:anywhere}a:hover{text-decoration-thickness:2px}
:is(a,select):focus-visible{outline:3px solid var(--focus);outline-offset:3px}
.sources-shell{width:min(1120px,calc(100% - 36px));margin:0 auto;padding:28px 0 64px}
.sources-nav{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-bottom:36px}.sources-nav>a{font-weight:800}.sources-controls{display:flex;gap:10px}.sources-controls label{display:grid;gap:4px;color:var(--muted);font-size:12px}.sources-controls select{min-width:108px;padding:7px 10px;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--text);font:inherit}
.sources-hero{max-width:880px;padding:34px 0 44px}.eyebrow{color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.sources-hero h1{margin:10px 0 18px;font:700 clamp(42px,7vw,76px)/1.04 Georgia,serif;letter-spacing:-.025em}.lead{font-size:clamp(18px,2vw,23px);line-height:1.55;color:var(--muted)}
section{margin:34px 0}section>h2,.aggregate-panel h2{margin:8px 0 20px;font:700 clamp(28px,4vw,42px)/1.1 Georgia,serif}
.aggregate-panel{padding:clamp(22px,4vw,40px);border:1px solid var(--evidence);border-radius:22px;background:var(--surface);box-shadow:var(--shadow)}.aggregate-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:20px 0}.aggregate-grid article,.source-grid article{padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--surface-2)}.aggregate-grid strong{display:block;color:var(--evidence);font-size:clamp(28px,4vw,42px);overflow-wrap:anywhere}.aggregate-grid p{margin:5px 0 0;color:var(--muted)}
.source-grid,.calculation-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.source-grid h3,.calculation-grid h3{margin:12px 0 10px;font-size:21px}.source-grid p,.calculation-grid p{margin:8px 0;line-height:1.5}.source-grid .supports:before{content:"✓ ";color:var(--accent);font-weight:900}.source-grid .limit{color:var(--warning)}.source-grid .limit:before{content:"! ";font-weight:900}.calculation-grid article{padding:18px;border:1px solid var(--line);border-radius:15px;background:var(--surface-2)}.calculation-grid strong{display:block;color:var(--evidence);font-size:clamp(21px,3vw,30px);overflow-wrap:anywhere}.distribution{padding:12px 14px;border-radius:10px;background:var(--evidence-soft);color:var(--evidence);font-weight:800}.status.estimate{background:var(--warning-soft);color:var(--warning)}.status.illustration{background:var(--accent-soft);color:var(--accent)}
.status{display:inline-block;padding:5px 9px;border-radius:999px;font-size:11px;font-weight:800;letter-spacing:.04em;text-transform:uppercase}.status.public{background:var(--accent-soft);color:var(--accent)}.status.internal{background:var(--warning-soft);color:var(--warning)}.status.measurement{background:var(--evidence-soft);color:var(--evidence)}
.overlap-warning{margin:38px 0 22px;padding:18px 20px;border:1px solid var(--warning);border-radius:14px;background:var(--warning-soft);font-weight:800;line-height:1.5}footer{padding-top:16px;border-top:1px solid var(--line)}
@media(max-width:640px){.sources-shell{width:min(100% - 24px,1120px);padding-top:16px}.sources-nav{align-items:flex-start;flex-direction:column;padding-bottom:20px}.sources-controls{width:100%}.sources-controls label{flex:1}.sources-controls select{width:100%}.sources-hero{padding:24px 0 30px}.sources-hero h1{font-size:38px}.aggregate-grid,.source-grid,.calculation-grid{grid-template-columns:1fr}.aggregate-panel{padding:20px 16px}}