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@media print{.method-jump{display:none}.method-hero{min-height:auto;padding:32px 0}.method-section{padding:32px 0;break-inside:avoid}.network-stage,.currency-case,.id-stage,.source-layers,.population-triptych,.quality-stack,.model-types{break-inside:avoid}.year-monument{display:none}}


/* v1.84 · clearer relationship and cartography explanations */
.relation-story{margin-top:42px;padding:clamp(24px,4vw,46px);border:1px solid var(--line);background:linear-gradient(180deg,color-mix(in srgb,var(--surface-solid) 94%,transparent),var(--bg-soft))}.relation-story__sr{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.relation-core{display:grid;grid-template-columns:auto 1fr auto;gap:8px 18px;align-items:end;padding-bottom:30px;border-bottom:1px solid var(--line)}.relation-core__id{grid-row:1/3;align-self:center;color:var(--gold);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:clamp(22px,3vw,36px);font-weight:800;letter-spacing:-.04em}.relation-core>strong{font-family:Georgia,"Times New Roman",serif;font-size:clamp(30px,4vw,48px);font-weight:400;line-height:1}.relation-core>small{grid-column:2;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.1em}.relation-core__sources{grid-column:3;grid-row:1/3;display:flex;max-width:310px;flex-wrap:wrap;justify-content:flex-end;gap:7px;align-items:center}.relation-core__sources span{flex-basis:100%;color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.1em;text-align:right;text-transform:uppercase}.relation-core__sources code,.relation-sources code{padding:5px 8px;border:1px solid color-mix(in srgb,var(--gold) 42%,var(--line));border-radius:999px;color:var(--gold);background:color-mix(in srgb,var(--gold) 7%,transparent);font-size:11px;font-weight:800}.relation-connector{height:42px;display:grid;place-items:center}.relation-connector span{display:block;width:1px;height:100%;background:linear-gradient(var(--line-strong),var(--gold))}.relation-events__label{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:16px}.relation-events__label strong{font-family:Georgia,"Times New Roman",serif;font-size:25px;font-weight:400}.relation-events__label span{color:var(--muted);font-size:11px}.relation-events__grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1px;border:1px solid var(--line);background:var(--line)}.relation-events__grid article{display:flex;min-width:0;min-height:250px;flex-direction:column;padding:22px 18px;background:var(--surface-solid)}.relation-events__grid article>a{display:flex;min-height:132px;flex-direction:column;color:inherit;text-decoration:none}.relation-events__grid time{color:var(--accent-text);font-family:Georgia,"Times New Roman",serif;font-size:clamp(27px,3vw,39px);line-height:1;letter-spacing:-.04em}.relation-events__grid article>a strong{margin-top:17px;font-size:13px;line-height:1.45}.relation-sources{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:18px;border-top:1px solid var(--line)}.relation-sources span{flex-basis:100%;color:var(--muted);font-size:9px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.relation-culture{display:grid;grid-template-columns:70px 1fr;gap:20px;align-items:center;margin-top:32px}.relation-culture__line{position:relative;height:70px;border-left:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong)}.relation-culture__line::after{content:"";position:absolute;right:-1px;bottom:-4px;width:7px;height:7px;border-radius:50%;background:var(--slate)}.relation-culture>div:last-child>span{display:block;color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.relation-culture a{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:baseline;margin-top:8px;color:inherit;text-decoration:none}.relation-culture a code{color:var(--slate);font-size:13px;font-weight:800}.relation-culture a strong{font-family:Georgia,"Times New Roman",serif;font-size:24px;font-weight:400}.relation-culture small{display:block;margin-top:7px;color:var(--muted)}
.rotation-method{display:grid;grid-template-columns:minmax(0,1fr) 100px minmax(0,1fr);gap:18px;align-items:center}.rotation-panel{position:relative;min-width:0;border:1px solid var(--line);background:var(--surface-solid)}.rotation-panel__label{display:block;padding:13px 16px;border-bottom:1px solid var(--line);color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.11em;text-transform:uppercase}.rotation-panel svg{display:block;width:100%;height:auto}.rotation-grid path{fill:none;stroke:color-mix(in srgb,var(--line) 62%,transparent);stroke-width:1}.rotation-points .map-point{fill:var(--gold);opacity:.86}.rotation-points .map-point--culture{fill:var(--slate);stroke:var(--surface-solid);stroke-width:1}.north-mark line{stroke:var(--text);stroke-width:1.5}.north-mark marker path{fill:none;stroke:var(--text);stroke-width:1.2}.north-mark text{fill:var(--text);font:800 11px ui-sans-serif,system-ui,sans-serif}.rotation-turn{text-align:center}.rotation-turn span,.rotation-turn small{display:block;color:var(--muted);font-size:9px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.rotation-turn b{display:block;margin:7px 0;color:var(--gold);font-family:Georgia,"Times New Roman",serif;font-size:48px;font-weight:400;line-height:1}.rotation-method__caption{grid-column:1/-1;display:flex;justify-content:space-between;gap:24px;padding-top:17px;border-top:1px solid var(--line)}.rotation-method__caption strong{color:var(--stone);font-size:12px;text-transform:uppercase;letter-spacing:.08em}.rotation-method__caption span{max-width:58ch;color:var(--muted);font-size:11px;line-height:1.55;text-align:right}.cluster-method{display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,.8fr);gap:clamp(32px,6vw,80px);align-items:center;margin-top:clamp(62px,8vw,100px);padding:clamp(28px,4vw,46px);border:1px solid var(--line);background:var(--surface-solid)}.cluster-method__copy h3{max-width:15ch}.cluster-method__copy p:last-child{margin-bottom:0}.cluster-method__visual{display:grid;grid-template-columns:1fr 36px 1fr;gap:15px;align-items:center}.cluster-method__visual>i{color:var(--gold);font-style:normal;text-align:center}.cluster-state{position:relative;display:grid;place-items:center;min-height:180px;border:1px solid var(--line);background:var(--bg-soft)}.cluster-state small{position:absolute;left:12px;bottom:10px;color:var(--muted);font-size:9px;font-weight:800;letter-spacing:.09em;text-transform:uppercase}.cluster-badge{display:grid;width:64px;height:64px;place-items:center;border-radius:50%;color:var(--bg);background:var(--gold);font-family:Georgia,"Times New Roman",serif;font-size:30px}.cluster-state--split span{position:absolute;width:13px;height:13px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 4px color-mix(in srgb,var(--gold) 10%,transparent)}.cluster-state--split span:nth-child(1){left:30%;top:31%}.cluster-state--split span:nth-child(2){left:55%;top:25%}.cluster-state--split span:nth-child(3){left:45%;top:48%}.cluster-state--split span:nth-child(4){left:67%;top:55%}.cluster-state--split span:nth-child(5){left:27%;top:62%}
@media(max-width:1050px){.relation-events__grid{grid-template-columns:repeat(3,1fr)}.relation-events__grid article:nth-child(4),.relation-events__grid article:nth-child(5){min-height:220px}.rotation-method{grid-template-columns:1fr}.rotation-turn{display:flex;align-items:center;justify-content:center;gap:10px}.rotation-turn b{margin:0;transform:rotate(90deg)}.rotation-method__caption{grid-column:1}.cluster-method{grid-template-columns:1fr}}
@media(max-width:760px){.relation-story{margin-inline:-16px;padding:20px 16px}.relation-core{grid-template-columns:1fr}.relation-core__id{grid-row:auto}.relation-core>small{grid-column:1}.relation-core__sources{grid-column:1;grid-row:auto;justify-content:flex-start;max-width:none;margin-top:12px}.relation-core__sources span{text-align:left}.relation-events__label{align-items:start;flex-direction:column;gap:5px}.relation-events__grid{grid-template-columns:1fr 1fr}.relation-events__grid article{min-height:215px}.relation-events__grid article:last-child{grid-column:1/-1}.relation-events__grid article>a{min-height:108px}.relation-culture{grid-template-columns:34px 1fr}.relation-culture a{display:block}.relation-culture a strong{display:block;margin-top:6px}.rotation-method__caption{display:block}.rotation-method__caption span{display:block;margin-top:8px;text-align:left}.cluster-method{margin-inline:-16px;padding:24px 16px}.cluster-method__visual{grid-template-columns:1fr}.cluster-method__visual>i{transform:rotate(90deg)}}
@media(max-width:500px){.relation-events__grid{grid-template-columns:1fr}.relation-events__grid article:last-child{grid-column:auto}.relation-events__grid article{min-height:190px}.rotation-panel__label{padding:11px 13px}.cluster-state{min-height:150px}}
.method-grid--visual{grid-template-columns:1fr}.method-grid--visual>div:first-child{max-width:840px}.relation-core__id{grid-column:1}.relation-core>strong{grid-column:2}
@media(max-width:760px){.relation-core__id,.relation-core>strong{grid-column:1}}
.rotation-method{display:flex;flex-wrap:wrap;gap:18px;align-items:center}.rotation-panel{flex:1 1 0}.rotation-turn{flex:0 0 100px}.rotation-method__caption{flex:1 0 100%;grid-column:auto}
@media(max-width:760px){.rotation-method{flex-direction:column;align-items:stretch}.rotation-panel{width:100%;flex:auto}.rotation-turn{flex:auto}.rotation-method__caption{flex:auto;width:100%}}
.cluster-badge{display:flex;align-items:center;justify-content:center;min-width:64px;max-width:64px;min-height:64px;max-height:64px;justify-self:center;align-self:center}.cluster-state--split span{display:block;min-width:13px;max-width:13px;min-height:13px;max-height:13px}
.cluster-svg{display:block;width:100%;height:auto}.cluster-svg>rect{fill:var(--bg-soft);stroke:var(--line)}.cluster-svg__badge{fill:var(--gold)}.cluster-svg__count{fill:var(--bg);font-family:Georgia,"Times New Roman",serif;font-size:31px}.cluster-svg__points circle{fill:var(--gold)}.cluster-svg__label{fill:var(--muted);font-family:ui-sans-serif,system-ui,sans-serif;font-size:9px;font-weight:800;letter-spacing:.8px}

/* v1.84 method refinements */
.coverage-bars>div{grid-template-columns:minmax(190px,220px) minmax(0,1fr)}
.coverage-bars span{display:grid;grid-template-columns:82px minmax(0,1fr);gap:12px;align-items:baseline;justify-content:initial}
.coverage-bars strong{white-space:nowrap;font-variant-numeric:tabular-nums}

.quality-path{display:grid;grid-template-columns:minmax(230px,.38fr) minmax(0,1fr);gap:1px;margin-top:42px;border:1px solid var(--line);background:var(--line)}
.quality-path__case{display:flex;min-height:100%;flex-direction:column;justify-content:flex-end;padding:clamp(28px,4vw,46px);background:linear-gradient(160deg,color-mix(in srgb,var(--gold) 8%,var(--surface-solid)),var(--surface-solid))}
.quality-path__case>span{color:var(--gold);font-size:10px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}
.quality-path__case>strong{margin-top:20px;font-family:Georgia,"Times New Roman",serif;font-size:clamp(30px,3.8vw,48px);font-weight:400;line-height:1.05}
.quality-path__case>strong code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.64em;color:var(--text)}
.quality-path__case>small{margin-top:18px;color:var(--muted);font-size:12px;line-height:1.55}
.quality-path__layers{display:grid;background:var(--line);gap:1px}
.quality-path__layers article{display:grid;grid-template-columns:58px minmax(0,1fr);gap:18px;align-items:start;padding:clamp(24px,3vw,36px);background:var(--surface-solid)}
.quality-path__no{color:var(--gold);font-family:Georgia,"Times New Roman",serif;font-size:27px;line-height:1}
.quality-path__layers small,.quality-path__layers strong{display:block}
.quality-path__layers small{color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
.quality-path__layers strong{margin-top:7px;color:var(--text);font-family:Georgia,"Times New Roman",serif;font-size:clamp(23px,2.5vw,31px);font-weight:400;line-height:1.1}
.quality-path__layers p{margin:9px 0 0!important;font-size:13px!important;line-height:1.6!important}
.quality-path code,.source-spectrum code{color:var(--gold);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em}
.quality-meter{display:flex;gap:6px;margin-top:14px}.quality-meter i{display:block;width:34px;height:4px;background:var(--surface-2)}.quality-meter i.is-on{background:var(--gold)}
.source-spectrum{margin-top:34px;border-top:1px solid var(--line)}
.source-spectrum__head,.source-spectrum>a{display:grid;grid-template-columns:minmax(210px,1fr) minmax(220px,1.15fr) 120px;gap:24px;align-items:center;padding:14px 6px;border-bottom:1px solid var(--line)}
.source-spectrum__head{padding-top:0;color:var(--muted);font-size:9px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.source-spectrum>a{min-height:64px;color:inherit;text-decoration:none;transition:background .18s ease}
.source-spectrum>a:hover,.source-spectrum>a:focus-visible{background:color-mix(in srgb,var(--gold) 5%,transparent)}
.source-spectrum>a strong{font-size:13px}.source-spectrum>a span{color:var(--stone);font-size:12px}.source-spectrum>a b{justify-self:start;color:var(--text);font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.07em}

.method-section--json h2{max-width:13ch}.json-pair{display:grid;grid-template-columns:minmax(0,1fr) 90px minmax(0,1fr);gap:20px;align-items:stretch;margin-top:44px}
.json-record{min-width:0;border:1px solid var(--line);background:var(--surface-solid)}
.json-record header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 18px;border-bottom:1px solid var(--line)}
.json-record header span{color:var(--muted);font-size:10px;font-weight:800;letter-spacing:.11em;text-transform:uppercase}.json-record header strong{font-size:14px}.json-record header code{color:var(--gold)}
.json-record pre{margin:0;padding:22px 20px 24px;overflow-x:auto;color:var(--muted);background:color-mix(in srgb,var(--bg-soft) 82%,var(--surface-solid));font:12px/1.72 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;tab-size:2}
.json-record pre code{font:inherit}.json-record footer{padding:14px 18px;border-top:1px solid var(--line);color:var(--muted);font-size:11px;line-height:1.55}
.json-key{color:var(--stone)}.json-string{color:var(--text)}.json-number{color:var(--accent-text)}.json-bool{color:var(--gold);font-weight:800}.json-id,.json-link{color:var(--gold);font-weight:800}
.json-linkage{display:flex;min-width:0;flex-direction:column;align-items:center;justify-content:center;gap:9px;color:var(--gold)}.json-linkage span{width:1px;flex:1 1 0;min-height:44px;background:var(--line-strong)}.json-linkage strong{writing-mode:vertical-rl;transform:rotate(180deg);font:800 10px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.08em}

.north-mark line{stroke:var(--text);stroke-width:1.5}.north-arrowhead{fill:var(--text)}
.cluster-svg__count{dominant-baseline:central}

@media(max-width:1050px){.quality-path{grid-template-columns:1fr}.quality-path__case{min-height:220px}.json-pair{grid-template-columns:1fr}.json-linkage{min-height:62px;flex-direction:row}.json-linkage span{width:auto;height:1px;min-height:0;min-width:44px}.json-linkage strong{writing-mode:horizontal-tb;transform:none}}
@media(max-width:760px){.coverage-bars>div{grid-template-columns:1fr}.coverage-bars span{grid-template-columns:82px minmax(0,1fr)}.source-spectrum__head{display:none}.source-spectrum>a{grid-template-columns:1fr auto;gap:5px 14px;padding:16px 4px}.source-spectrum>a strong{grid-column:1/-1}.source-spectrum>a span{grid-column:1}.source-spectrum>a b{grid-column:2;grid-row:2}.quality-path__layers article{grid-template-columns:45px minmax(0,1fr)}.json-record pre{font-size:11px}}
@media(max-width:500px){.coverage-bars span{grid-template-columns:76px minmax(0,1fr)}.json-pair{margin-inline:-8px}.json-record pre{padding:18px 14px}}
.json-record pre{white-space:pre-wrap;overflow-wrap:anywhere;word-break:normal;overflow-x:hidden}