:root{--ink:#030208;--slate:#375361;--red:#c92138;--blue:#1e2d67;--ice:#edf3f6;--line:#ccd7dd}*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);font-family:Arial,Helvetica,sans-serif;line-height:1.6}a{color:var(--blue);text-underline-offset:4px}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible,canvas:focus-visible{outline:3px solid #df2840;outline-offset:4px}button{border:1px solid var(--line);border-radius:5px;background:#fff;color:var(--blue);padding:9px 14px}button:hover{background:var(--ice)}.masthead,main,footer{max-width:1440px;margin:auto;padding-left:40px;padding-right:40px}.masthead{display:flex;justify-content:space-between;align-items:center;padding-top:32px;padding-bottom:32px}.wordmark{font-size:38px;letter-spacing:-2px;font-weight:900;text-decoration:none;color:var(--ink);line-height:1}.wordmark span{display:block;font-size:13px;letter-spacing:4.1px;font-weight:400;margin-top:7px}.masthead nav{display:flex;gap:28px;font-size:14px}.intro{display:grid;grid-template-columns:1.1fr 1fr;align-items:end;gap:60px;padding:45px 0 48px;border-top:1px solid var(--line)}.eyebrow{font-size:11px;letter-spacing:.19em;text-transform:uppercase;font-weight:700;color:var(--red);margin:0 0 12px}h1{font-size:clamp(46px,6.2vw,84px);line-height:1.02;letter-spacing:-.065em;margin:0;font-weight:800}h2{font-size:32px;line-height:1.15;letter-spacing:-.045em;margin:0}h3{font-size:21px;letter-spacing:-.025em;line-height:1.3;margin:0 0 12px}.intro-copy{max-width:470px;color:var(--slate);font-size:22px}.intro-copy p{margin:0 0 12px}.small{font-size:12px;color:var(--slate)}.explorer{border:1px solid var(--line);border-radius:12px;overflow:hidden}.explorer-top{display:flex;align-items:center;justify-content:space-between;padding:25px 28px;gap:24px}.dates{font-size:12px;color:var(--slate);text-align:right;max-width:330px}.stale{color:#a71a30;font-weight:700}.toolbar{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background:var(--ice);gap:20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.layers{border:0;padding:0;margin:0;display:flex;gap:4px}.layers label{position:relative;cursor:pointer}.layers input{position:absolute;opacity:0;width:1px;height:1px}.layers span{display:block;padding:9px 13px;border-radius:5px;font-size:13px;font-weight:700}.layers input:checked+span{background:var(--blue);color:white}.layers input:focus-visible+span{outline:3px solid #df2840}.edge-toggle{font-size:12px;white-space:nowrap;display:flex;align-items:center;gap:7px}input[type=checkbox]{accent-color:var(--blue)}.map-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px}.map-column{min-width:0;background:#edf3f6}.map-wrap{position:relative;aspect-ratio:1;overflow:hidden;background:#e1e9ed}.map-wrap canvas{width:100%;height:100%;display:block;touch-action:none;cursor:crosshair}.map-wrap canvas.interacting{touch-action:none}.map-controls{position:absolute;left:16px;bottom:16px;display:flex;gap:5px}.map-controls button{background:#fff;padding:7px 12px;box-shadow:0 1px 5px #0001}.north-label{position:absolute;top:14px;left:50%;transform:translateX(-50%);letter-spacing:.15em;font-size:9px;color:var(--slate);pointer-events:none;background:#ffffffd9;padding:3px 7px;border-radius:3px;white-space:nowrap}.map-help{font-size:11px;color:var(--slate);padding:10px 18px;margin:0;border-top:1px solid var(--line)}.legend{padding:2px 18px 16px;font-size:11px;color:var(--slate)}.scale-row{display:flex;gap:12px;align-items:center;margin-top:7px}.scale-title{width:110px;font-weight:700}.scale-body{flex:1;max-width:420px}.scale{height:8px;border-radius:2px}.scale-labels{display:flex;justify-content:space-between;font-size:10px}.swatch{display:inline-block;width:10px;height:10px;vertical-align:middle;margin-right:5px;border:1px solid #657984}.legend-note{margin:8px 0 0;font-size:10px}.reading-panel{padding:27px 25px;border-left:1px solid var(--line);background:#fff}.metric{padding:17px 0;border-top:1px solid var(--line)}.metric-title{font-size:12px;color:var(--slate)}.metric-value{font-size:34px;letter-spacing:-.05em;font-weight:750;line-height:1.3}.metric-value.textual{font-size:20px;letter-spacing:-.02em}.metric-unit{font-size:16px;letter-spacing:0;font-weight:400}.metric-detail{font-size:11px;color:var(--slate);margin:3px 0 0}.reading-note{background:var(--ice);padding:17px;margin:24px 0 18px;font-size:12px;color:var(--slate);border-left:2px solid var(--blue)}.reading-note p{margin:8px 0 0}summary{cursor:pointer;color:var(--blue);font-weight:700;font-size:13px}.coordinate-fields{display:flex;gap:10px;margin:12px 0}.coordinate-fields label{font-size:11px;flex:1;min-width:0}.coordinate-fields input{width:100%;border:1px solid var(--line);border-radius:4px;padding:6px}.inspect{font-size:12px;width:100%}.places{padding:18px 25px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;border-top:1px solid var(--line)}.places .eyebrow{margin:0 12px 0 0}.places button{font-size:12px}.context{display:grid;grid-template-columns:1fr 1fr;gap:60px;padding:65px 0;color:var(--slate)}.context h2{font-size:40px;color:var(--ink)}.context p{margin-top:0}.text-link{font-size:14px;font-weight:700}.sources{border-top:1px solid var(--line);padding:23px 0}.sources>summary{font-size:15px}.source-grid{display:grid;grid-template-columns:1fr 1fr;gap:45px;padding-top:25px;color:var(--slate);font-size:13px}.source-grid h3{color:var(--ink);font-size:18px}footer{border-top:1px solid var(--line);padding-top:24px;padding-bottom:35px;display:flex;justify-content:space-between;font-size:12px;color:var(--slate);gap:20px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}#error{background:#fff0f2;color:#8b1830;padding:18px}#error[hidden]{display:none}
@media(max-width:1000px){.map-layout{grid-template-columns:minmax(0,1fr) 250px}.reading-panel{padding:22px 18px}.intro{gap:30px}.map-help{font-size:10px}}
@media(max-width:700px){.masthead,main,footer{padding-left:18px;padding-right:18px}.masthead{padding-top:25px;padding-bottom:25px}.wordmark{font-size:28px}.wordmark span{font-size:9px;letter-spacing:3.35px}.masthead nav{gap:12px;font-size:11px}.intro{grid-template-columns:1fr;gap:23px;padding:30px 0}.intro-copy{font-size:18px}.intro h1 br{display:none}.explorer-top{display:block;padding:20px}.explorer-top h2{font-size:27px}.dates{text-align:left;margin-bottom:0}.toolbar{display:block;padding:10px}.layers{display:grid;grid-template-columns:1fr 1fr;gap:5px}.layers span{text-align:center;font-size:12px;padding:8px}.edge-toggle{margin:10px 3px 2px}.map-layout{display:block}.reading-panel{border-left:0;border-top:1px solid var(--line);padding:24px}.metric{display:inline-block;vertical-align:top;width:49%;padding-right:10px}.metric-value{font-size:30px}.metric-value.textual{font-size:17px}.map-controls{left:10px;bottom:10px}.map-controls button{font-size:12px;min-height:40px}.map-help{font-size:10px}.scale-title{width:87px;font-size:10px}.places{padding:18px;gap:8px}.places .eyebrow{width:100%}.places button{flex:1 1 40%;font-size:11px;padding:9px}.context,.source-grid{grid-template-columns:1fr;gap:20px}.context{padding:40px 0}.context h2{font-size:33px}.source-grid{font-size:13px}footer{display:block}footer a{display:block;margin-top:10px}}

.scale-labels{position:relative;height:17px}.scale-labels span{position:absolute;transform:translateX(-50%);white-space:nowrap}.scale-labels span:first-child{transform:none}.scale-labels span:last-child{transform:translateX(-100%)}.wordmark img{width:215px;height:auto;display:block}@media(max-width:700px){.wordmark img{width:150px}}
@media(max-width:700px){.scale-row{display:block}.scale-title{display:block;width:auto;margin:5px 0}.scale-body{width:100%}}

.places{border-top:0;border-bottom:1px solid var(--line);padding-top:0;padding-bottom:22px;margin-bottom:22px;gap:9px}.places .eyebrow{flex-basis:100%;margin:0 0 3px;color:var(--slate)}.places button{background:#edf3f6;color:#375361;border-color:#ccd7dd;box-shadow:none}.place-help{flex-basis:100%;font-size:12px;color:var(--slate);margin:0}.places button:hover{background:#dfe9ef}
/* Reading hierarchy follows the main Atlantic page. */
.map-layout{gap:26px;align-items:start}.map-column{background:white}.toolbar{padding:0 0 18px;background:white;border-top:0;border-bottom:1px solid var(--line);flex-wrap:wrap;gap:10px}.layers{background:var(--ice);border-radius:8px;padding:5px;flex-wrap:wrap}.layers span{font-size:12px;padding:9px 10px}.reading-note{margin:24px 0 16px;padding:16px;background:var(--ice);border:1px solid var(--line);border-left:3px solid var(--line);border-radius:12px;font-size:13px}.reading-note .eyebrow{font-size:9px;color:var(--slate);margin:0 0 8px}.reading-note strong{font-size:20px;letter-spacing:-.035em;color:var(--ink)}.map-wrap{border-radius:12px 12px 0 0}.reading-panel{padding:0 0 0 26px;border-left:1px solid var(--line)}.reading-panel>.eyebrow{font-size:10px;letter-spacing:.15em;margin:0 0 7px}.reading-panel h3{font-size:24px;margin:0 0 12px;letter-spacing:-.04em}.source-badge{display:inline-block;background:var(--blue);color:white;font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:3px 7px;border-radius:3px}.reading-panel #place{margin:14px 0 3px}.reading-panel #coordinates{margin:0 0 18px;font-size:12px}.metric{padding:19px 0 22px}.metric:first-child{border-top:0;padding-top:0}.metric-title{font-size:13px;font-weight:700;letter-spacing:.025em;margin-bottom:8px}.metric-value{font-size:48px;line-height:1.1;font-weight:800;letter-spacing:-.055em}.metric-unit{font-size:20px;color:var(--slate);font-weight:400}.metric-detail{font-size:12px;line-height:1.6;margin:10px 0 0}.metric-value.textual{font-size:24px;letter-spacing:-.025em}.fact-row{display:flex;justify-content:space-between;gap:14px;padding:16px 0;border-top:1px solid var(--line);font-size:13px;color:var(--slate)}.fact-row strong{color:var(--ink);text-align:right;font-size:14px}.reading-panel form{border-top:1px solid var(--line);padding-top:20px;margin:5px 0 24px}.reading-panel>.small:last-child{font-size:12px}
@media(max-width:1000px){.map-layout{gap:20px}.reading-panel{padding-left:20px}.metric-value{font-size:42px}}
@media(max-width:700px){.map-layout{display:block}.toolbar{display:block}.layers{display:grid}.edge-toggle{margin-top:13px}.reading-panel{padding:25px 0 0;border-left:0;border-top:1px solid var(--line);margin-top:22px}.metric{display:block;width:100%;padding-right:0}.metric-value{font-size:44px}.reading-note strong{font-size:19px}}
/* Exact desktop type scale from the Atlantic selected-location panel. */
.reading-panel{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:14px;line-height:1.5}.reading-panel>.eyebrow{font-size:11px;font-weight:600;letter-spacing:.12em;line-height:1.5}.reading-panel h3{font-size:23px;font-weight:650;letter-spacing:-.025em;line-height:1.25}.source-badge{font-size:11px;font-weight:400;letter-spacing:.07em;line-height:1.5;padding:3px 6px;border-radius:4px}.metric-title{font-size:13px;font-weight:650;letter-spacing:.04em;line-height:1.5;color:#263b49}.metric-value{font-size:49px;line-height:1.1;font-weight:500;letter-spacing:-.055em;margin:8px 0}.metric-unit{font-size:21px;line-height:1.1;font-weight:400}.metric-detail,.reading-panel>.small:last-child{font-size:13px;line-height:1.5}.fact-row{font-size:14px;line-height:1.5}.fact-row strong{font-size:19px;font-weight:650;line-height:1.5}.metric-value.textual{font-size:23px;font-weight:650}.reading-panel summary{font-size:14px}.reading-panel .small{line-height:1.5}
@media(max-width:700px){.metric-value{font-size:36px;margin:4px 0}.metric-value.textual{font-size:22px}}
.layers span{display:flex;align-items:center;justify-content:center;gap:7px}.layer-icon{width:24px;height:24px;display:inline-block;flex:none;vertical-align:middle}.edge-toggle .layer-icon{width:21px;height:21px}.layers input:checked+span .layer-icon{color:inherit}
@media(max-width:700px){.layer-icon{width:20px;height:20px}.layers span{gap:6px;padding:9px 7px}}

.pole-controls{display:flex;align-items:center;gap:12px 22px;flex-wrap:wrap;padding:0 0 18px;color:var(--slate);font-size:13px}.pole-controls label{display:inline-flex;align-items:center;gap:6px;cursor:pointer;min-height:32px}.pole-controls input{accent-color:var(--blue);width:16px;height:16px}.pole-kicker{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.12em}.pole-note{font-size:12px;color:var(--slate);margin:0 0 18px;line-height:1.6}.pole-note[hidden]{display:none}

/* Match Atlantic layer-tab typography in both polar explorers. */
.layers span{font-family:-apple-system,system-ui,"Segoe UI",sans-serif;font-weight:400}

/* Place shortcuts match the Atlantic navigation. */
.places button{font-family:Arial,Helvetica,sans-serif;font-size:11px;font-weight:600;letter-spacing:1px;text-transform:uppercase;line-height:1.4;min-height:44px;padding:10px 2px;border:0;border-bottom:2px solid transparent;border-radius:0;background:transparent;color:#111;box-shadow:none}.places button:hover{background:transparent;border-bottom-color:#75818a}.places button[aria-pressed="true"],.places button[aria-current="true"]{color:#111;border-bottom-color:currentColor;background:transparent}.places button:focus-visible{outline:3px solid #347c9a;outline-offset:4px}