:root{color-scheme:light;--paper:#f6f0e3;--ink:#30291f;--muted:#71634f;--rule:#cbbb9e;--red:#8a3324}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Iowan Old Style",Palatino,Georgia,serif;line-height:1.55}a{color:var(--red);text-underline-offset:3px}header{max-width:1600px;margin:auto;padding:19px 32px;display:flex;justify-content:space-between;border-bottom:1px solid var(--rule)}header>a{font-size:20px;text-decoration:none;color:var(--ink)}nav{font-size:14px}main{max-width:1600px;margin:auto;padding:0 32px}.intro{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;padding:32px 0 26px}.eyebrow{font-size:12px;letter-spacing:1.3px;color:var(--muted);margin:0 0 10px}h1{font-family:Optima,Palatino,serif;font-size:clamp(34px,3.4vw,54px);font-weight:400;line-height:1.08;margin:0}h1 em{color:var(--red);font-weight:400}.lede{color:var(--muted);max-width:400px;font-size:17px;margin:0 0 4px}.atlas{border:1px solid var(--rule);background:#fbf7ed}.timeline{padding:14px 20px 8px;border-bottom:1px solid var(--rule)}.transport{display:flex;align-items:center;gap:12px}.transport strong{font-size:23px;min-width:111px;text-align:center;font-weight:400}.transport>button:first-child,.transport>button:nth-child(3){font-size:21px;padding:1px 12px}button,select{font:inherit;color:var(--ink);background:transparent;border:1px solid var(--rule);border-radius:3px;padding:5px 10px;cursor:pointer}button:hover{background:#eee3cd}button:disabled{opacity:.35;cursor:default}button:focus-visible,select:focus-visible,a:focus-visible,input:focus-visible,.map-scroll:focus-visible{outline:3px solid #356b8b;outline-offset:3px}#position{font-size:12px;color:var(--muted)}#compare{margin-left:auto;font-size:13px}#compare[aria-pressed=true]{background:var(--ink);color:#fff}.dates{display:grid;grid-template-columns:repeat(13,1fr);gap:3px;margin-top:14px}.dates button{border:0;border-bottom:3px solid transparent;border-radius:0;padding:4px 0;font-size:14px}.dates button[aria-current=true]{border-color:var(--red);color:var(--red);background:#eee3cd;font-weight:bold}.range-label{display:flex;align-items:center;gap:16px;font-size:12px;color:var(--muted);padding-top:5px}.range-label input{flex:1;accent-color:var(--red);min-width:0}.atlas-body{display:grid;grid-template-columns:minmax(0,1fr) 300px}.map-column{min-width:0;border-right:1px solid var(--rule)}.map-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 16px;font-size:12px;color:var(--muted)}.map-toolbar button{font-size:12px;white-space:nowrap}.map-scroll{overflow:auto}.map-wrap svg{display:block;width:100%;height:auto}.map-scroll.enlarged .map-wrap{min-width:1400px}.map-scroll.enlarged{max-height:78vh}.legend{display:flex;flex-wrap:wrap;gap:8px 17px;padding:15px 18px 6px;font-size:12px}.legend span{display:flex;align-items:center;gap:6px}.legend i{display:inline-block;width:18px;height:12px;border:1px solid #88775e}.roman{background:#bb7768}.east{background:#769e91}.lost{background:#d7c18b}.rival{background:#aa94b6}.mixed{background:repeating-linear-gradient(135deg,#d7c18b 0px,#d7c18b 4px,#557f73 4px,#557f73 7px)}.changed{background:#fbf7ed;border:2px solid #704817!important}.map-note{font-size:12px;line-height:1.5;color:var(--muted);padding:0 18px;margin:9px 0 15px}.story{padding:25px 23px}.story h2{font-size:27px;line-height:1.12;font-weight:400;margin:0 0 17px}.story p{font-size:15px}.story .eyebrow{font-size:12px}.change{border-left:3px solid #9c7a3c;padding-left:12px;color:#695134;font-style:italic}.region-detail{border-top:1px solid var(--rule);margin-top:25px;padding-top:18px}.region-detail label{display:block;font-size:14px;margin-bottom:7px}.region-detail select{width:100%;font-size:13px;background:#fbf7ed}.region-detail p{font-size:13px}.region-detail h3{font-size:17px;font-weight:400;margin:16px 0 5px}.region-detail ol{padding-left:19px;font-size:12px;color:var(--muted);max-height:180px;overflow:auto}.region-detail li{margin-bottom:6px}.reading-notes{display:grid;grid-template-columns:1fr 1fr;gap:60px;margin:34px 0 50px;font-size:15px;color:#635744}.reading-notes h2{font-size:22px;font-weight:400;color:var(--ink);margin:0}.reading-notes summary{cursor:pointer;color:var(--red);font-size:19px}.reading-notes ul{padding-left:20px}footer{text-align:center;font-size:12px;padding:20px;border-top:1px solid var(--rule);color:var(--muted)}@media(min-width:1450px){.atlas-body{grid-template-columns:minmax(0,1fr) 330px}.story p{font-size:16px}}@media(max-width:950px){main{padding:0 16px}header{padding:15px 16px}.intro{padding-top:24px}.lede{font-size:14px;max-width:260px}.atlas-body{grid-template-columns:minmax(0,1fr) 255px}.story{padding:20px 16px}.story h2{font-size:24px}.story p{font-size:14px}}@media(max-width:700px){.intro{display:block}.lede{max-width:none;margin-top:15px}.atlas-body{display:flex;flex-direction:column}.map-column{border-right:0;border-bottom:1px solid var(--rule)}.story{padding:22px}.story h2{font-size:27px}.story p{font-size:16px}.timeline{padding:12px}.dates{grid-template-columns:repeat(7,1fr);row-gap:6px}.dates button{font-size:13px}.transport{gap:7px}.transport strong{font-size:20px;min-width:98px}#position{display:none}#compare{font-size:12px;padding:5px 7px}.range-label{font-size:11px}.map-toolbar{padding:9px;font-size:11px}.map-scroll .map-wrap{min-width:650px}.map-scroll{max-height:65vh}.map-scroll.enlarged .map-wrap{min-width:1100px}.legend{font-size:11px;gap:8px 12px;padding:12px}.map-note{padding:0 12px}.reading-notes{grid-template-columns:1fr;gap:20px;margin:25px 5px}.region-detail ol{max-height:none}}@media(prefers-reduced-motion:no-preference){.region{transition:fill .18s}}@media print{header,.timeline,.map-toolbar,footer{display:none}.atlas-body{display:block}.map-column{border:0}.story{break-inside:avoid}.map-wrap{min-width:0!important}.map-scroll{max-height:none!important}.reading-notes{display:block}}
/* Keep the date controls available while reading the tall European plate. */
.timeline{position:sticky;top:0;z-index:2;background:#fbf7ed}.map-wrap svg{max-height:calc(100vh - 220px)}.map-scroll.enlarged .map-wrap svg{max-height:none}@media(max-width:700px){.timeline{position:relative}.map-wrap svg{max-height:none}}
.overview-link{font-size:14px;margin:12px 0}@media(max-width:700px){.map-toolbar:after{content:'Swipe sideways to see the eastern provinces.';display:block;flex-basis:100%;font-style:italic}.map-toolbar{flex-wrap:wrap}}