@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;450;500;550;600;650;700&family=Libre+Caslon+Display&display=swap');
:root{color-scheme:light;--paper:#f4f1e9;--ink:#242b28;--muted:#66706a;--line:#d6d8cc;--green:#2d6454;--accent:#a8bb89;--serif:'Libre Caslon Display',Georgia,serif;--sans:'DM Sans',system-ui,sans-serif;font-family:var(--sans);color:var(--ink);background:var(--paper);scroll-behavior:smooth}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,select,input{ -webkit-tap-highlight-color:transparent}button,select{cursor:pointer}a{color:inherit;text-underline-offset:4px}button{color:inherit}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #497a63;outline-offset:5px}button{border:0;background:none}button, a{touch-action:manipulation}[hidden]{display:none!important}.shell{width:min(1400px,calc(100% - 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@media(min-width:1600px){.intro{padding-block:70px 58px}.event-layout{min-height:510px}.scene{min-height:510px}.event-detail{padding:35px 42px 23px}.event-detail h2{font-size:40px}.event-description{font-size:13px}.scene-heading h2{font-size:58px}}
@media(max-width:1050px){.shell{width:calc(100% - 56px)}.event-detail{padding:23px 24px 18px}.scene{min-height:475px}.chapter{padding-inline:7px;gap:6px}.chapter-name{font-size:11px}.chapter-number{font-size:9px}.scene-heading{padding-inline:25px}.scene figcaption{padding-inline:25px}.scene-heading h2{font-size:40px}.event-detail h2{font-size:31px}.intro h1{font-size:83px}.method{gap:55px}.scale-insight strong{font-size:10px}.day-bar{margin:0 10px}.milestone-list{column-gap:23px}}
@media(max-width:760px){.shell{width:calc(100% - 36px)}.site-header{height:73px}.header-link{font-size:10px;gap:9px}.brand{font-size:15px;gap:7px}.brand-section{font-size:11px}.brand-divider{margin-inline:3px}.intro{padding-block:38px 32px;align-items:flex-end;gap:20px}.intro h1{font-size:66px;letter-spacing:-2.5px;margin-bottom:16px}.intro .eyebrow{font-size:8px;letter-spacing:1.6px;margin-bottom:16px}.intro-copy{font-size:12px;line-height:1.7}.intro-note{width:114px;padding-left:15px;flex:none;margin-bottom:3px}.big-number{font-size:41px}.big-number>span{font-size:12px;margin-left:3px}.intro-note p{font-size:9px}.intro-note a{font-size:9px;margin-top:12px}.chapters{grid-template-columns:repeat(3,1fr)}.chapter{padding:13px 8px;min-height:56px}.chapter:first-child{padding-left:8px}.chapter:nth-child(-n+3){border-bottom:1px solid var(--line)}.chapter-name{font-size:10px}.chapter small{font-size:8px;margin-top:4px}.chapter-number{font-size:8px}.explorer-top{padding:17px 0;gap:12px}.explorer-top .eyebrow{font-size:8px;letter-spacing:1px}.mode-switch button{font-size:9px;padding:7px 10px}.event-layout{grid-template-columns:1fr;min-height:0}.scene{min-height:385px;border-radius:4px 4px 0 0}.scene-heading{margin-top:165px;padding:0 25px 16px}.scene-heading h2{font-size:43px;max-width:480px}.scene-label{left:25px;right:25px;font-size:8px;top:23px}.scene figcaption{padding-bottom:18px;font-size:8px}.event-detail{border-left:1px solid var(--line);border-top:0;border-radius:0 0 4px 4px;padding:23px 25px 20px}.event-date{margin:22px 0 10px}.event-detail h2{font-size:34px}.event-summary{font-size:14px}.event-description{font-size:12px}.event-sources{font-size:11px;margin-bottom:20px}.detail-meta{font-size:9px}.detail-meta button{font-size:11px}.event-navigation button{font-size:17px}.event-navigation button span{font-size:12px}.event-navigation>span{font-size:10px}.timeline-heading p{font-size:11px}.timeline-heading p+p{font-size:9px;line-height:1.6;max-width:280px}.timeline-heading button{font-size:9px;padding:10px}.timeline-track{margin-inline:12px}.axis-labels{font-size:8px}.scrub-row{flex-wrap:wrap;gap:10px;margin-top:20px}.scrub-row label{font-size:9px}.scrub-row input{order:3;flex-basis:100%;height:28px;margin:0}.scrub-row output{margin-left:auto;font-size:9px;min-width:0}.scale-insight{display:grid;grid-template-columns:28px 1fr auto;gap:13px}.clock-face{width:28px;height:28px}.clock-face::before{left:13px;top:4px}.clock-face span{left:13px;top:13px}.scale-insight p{font-size:8px}.scale-insight strong{font-size:10px;line-height:1.6;display:block}.day-bar{display:none}.clock-time{font-size:9px;min-width:62px}.index-section{padding-block:43px 42px}.section-heading{align-items:flex-start;gap:20px}.section-heading h2{font-size:35px}.section-heading>p{display:none}.section-heading .eyebrow{font-size:9px}.index-controls{flex-wrap:wrap;gap:8px 10px}.search-label{flex-basis:100%}.search-label input{font-size:12px}.category-label{flex:1}.category-label select{width:100%;font-size:10px}.milestone-list{grid-template-columns:repeat(2,1fr);column-gap:24px}.milestone h3{font-size:24px}.milestone-meta{font-size:8px;gap:7px}.milestone-meta>span:last-child{display:none}.milestone p{font-size:10px}.method{grid-template-columns:1fr;gap:25px;padding-block:35px}.method h2{font-size:37px}.method .eyebrow{font-size:9px}.method-copy{font-size:12px}.footer{font-size:9px;gap:15px;flex-wrap:wrap}.footer span{display:none}}
@media(max-width:420px){.intro-note{display:none}.intro h1{font-size:63px}.scene{min-height:340px}.scene-heading h2{font-size:37px}.scene-heading{margin-top:145px}.chapter-name{font-size:9px}.chapter{gap:5px;padding-inline:5px}.event-detail{padding-inline:21px}.milestone-list{column-gap:18px}.milestone h3{font-size:22px}.intro-copy{font-size:12px}.header-link{font-size:9px}.brand-section{font-size:10px}.scale-insight{gap:10px}.scale-insight strong{font-size:9px}}
@media(prefers-reduced-motion:reduce){:root{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}

/* Keep evidence and navigation readable on small screens. */
.scene figcaption{font-size:10px}.event-description{font-size:13px}.event-sources,.evidence-note{font-size:10px}.clock-time{min-width:94px}.milestone p{font-size:12px}.chapter small{font-size:10px}@media(max-width:760px){.scene figcaption{font-size:10px}.chapter small{font-size:8px}.milestone p{font-size:11px}.clock-time{font-size:9px;min-width:82px}}

.scene--diagram{justify-content:flex-start;background:#122226}.scene--diagram .scene-image{position:relative;inset:auto;width:100%;aspect-ratio:700/345;z-index:0;overflow:auto;flex:none}.scene--diagram .scene-image svg{display:block;height:100%;width:100%}.scene--diagram .scene-vignette,.scene--diagram .scene-label{display:none}.scene--diagram .scene-heading{margin-top:0;padding-top:15px}.scene--diagram .scene-heading h2{font-size:38px}.scene--diagram figcaption{margin-top:auto;padding-top:5px}.diagram-sources{margin-top:8px}.diagram-sources summary{cursor:pointer}.diagram-sources ul{padding-left:15px}.diagram-sources li{margin:4px 0}@media(max-width:760px){.scene--diagram .scene-image{aspect-ratio:auto;height:276px}.scene--diagram .scene-image svg{width:560px;max-width:none;height:276px}.scene--diagram .scene-heading::before{content:"Swipe the diagram to explore →";display:block;font-family:var(--sans);font-size:9px;color:#b3c3b9;margin-bottom:20px}.scene--diagram .scene-heading h2{font-size:34px}.scene--diagram .scene-heading{padding-top:4px}}

.evidence-cabinet{padding-bottom:65px}.evidence-gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:32px 26px}.evidence-object{margin:0;min-width:0}.evidence-object>a{display:block;background:#e5e3da;height:225px;border-radius:3px;overflow:hidden}.evidence-object img{display:block;width:100%;height:100%;object-fit:contain}.evidence-object figcaption{padding-top:15px;font-size:11px;line-height:1.7;color:var(--muted)}.evidence-object figcaption>span{text-transform:uppercase;font-size:9px;letter-spacing:1.2px;color:var(--green)}.evidence-object figcaption p{margin:7px 0}.evidence-object figcaption>a{font-size:9px}@media(max-width:760px){.evidence-gallery{grid-template-columns:repeat(2,1fr);gap:25px 20px}.evidence-object>a{height:180px}.evidence-object figcaption{font-size:10px}.evidence-cabinet .section-heading h2{font-size:33px}.evidence-cabinet{padding-bottom:40px}}@media(max-width:420px){.evidence-object>a{height:150px}.evidence-object figcaption>span{font-size:8px}.evidence-object figcaption>a{font-size:9px}}