@font-face{font-family:Bricolage;src:url(/assets/fonts/bricolage-grotesque-latin.woff2) format('woff2');font-weight:200 800;font-display:swap}@font-face{font-family:Bricolage;src:url(/assets/fonts/bricolage-grotesque-latin-ext.woff2) format('woff2');font-weight:200 800;font-display:swap;unicode-range:U+0100-024F}@font-face{font-family:Barlow;src:url(/assets/fonts/barlow-condensed-900-latin-ext.woff2) format('woff2');font-weight:900;font-display:swap}@font-face{font-family:Plex;src:url(/assets/fonts/ibm-plex-mono-600-latin-ext.woff2) format('woff2');font-weight:600;font-display:swap}
:root{color-scheme:light;--paper:#f5f6f7;--surface:#fff;--ink:#132c3b;--muted:#3c505f;--line:#8e9ea9;--accent:#163d91;--red:#9a2235;--blue:#163d91;--green:#1d583b;--gold:#725004;--wash:#e3e9ee;--display:Bricolage,Arial,sans-serif}html[data-theme=dark]{color-scheme:dark;--paper:#101d25;--surface:#192a35;--ink:#edf6fa;--muted:#c0cfd8;--line:#657f8f;--accent:#b4ccff;--red:#ffafbb;--blue:#b4ccff;--green:#a6ddba;--gold:#ead294;--wash:#263f4e}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--paper);color:var(--ink);font:400 18px/1.6 Bricolage,Arial,sans-serif}button,input,select{font:inherit;color:inherit;min-height:44px}button,a{touch-action:manipulation}button{cursor:pointer;background:var(--surface);border:1px solid var(--line);border-radius:3px;padding:.65rem 1rem}a{color:inherit;text-underline-offset:.2em}a:hover{color:var(--accent)}button:hover{background:var(--wash);border-color:var(--accent)}:focus-visible{outline:3px solid 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a,.copy-page{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--line);padding:0;text-decoration:none;border-radius:50%;background:var(--surface)}.share-status{width:100%;color:var(--muted)}footer{display:flex;flex-wrap:wrap;gap:2rem;padding:2rem 4vw;border-top:1px solid var(--line);font-size:14px}footer a{min-height:44px;display:inline-flex;align-items:center}footer a:last-child{margin-left:auto}#to-top{position:fixed;bottom:20px;right:20px;width:48px;height:48px;z-index:20}.chapter-links{display:flex;flex-wrap:wrap;gap:1rem}.chapter-links a{min-height:44px}.mono{font-family:Plex,monospace}.muted{color:var(--muted)}
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.travellers-feature{--tr-forest:#174d47;--tr-rust:#8e3f1f;--tr-paper:#eee6d3;--tr-land:#ded0ad;--tr-sea:#e8efeb;--tr-river:#85a7a0;--tr-grid:#bdc9bf;--tr-ink:#213b3a;--tr-muted:#435b57;--tr-halo:#e8efeb;--tr-label:#203834;--serif:Georgia,serif;--sans:Arial,sans-serif;max-width:1560px;margin:auto;padding:clamp(2rem,6vw,6rem) clamp(1rem,5vw,5rem)}
html[data-theme=dark] .travellers-feature{--tr-forest:#9fd8c9;--tr-rust:#ffb18a;--tr-paper:#29322b;--tr-land:#485246;--tr-sea:#172b2c;--tr-river:#789f98;--tr-grid:#43534a;--tr-ink:#e2ebe0;--tr-muted:#c0cec2;--tr-halo:#172b2c;--tr-label:#f1f1dd}
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.tr-opening{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:clamp(1.5rem,4vw,4rem);align-items:center;min-height:430px;margin-bottom:clamp(3rem,8vw,8rem)}
.tr-eyebrow,.tr-kicker,.tr-card-label,.tr-number,.tr-path-no{font:600 12px/1.45 Plex,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--tr-forest)}
.tr-opening h1{max-width:12ch;font-family:Bricolage,Arial,sans-serif;font-size:clamp(48px,7vw,96px);font-weight:750;letter-spacing:-.035em;line-height:.98;margin:1rem 0 1.4rem}
.tr-intro{max-width:55ch;font-size:clamp(19px,2vw,24px);line-height:1.45;color:var(--muted)}
.tr-opening-note{display:inline-block;margin:1rem 0 0;padding:.7rem .8rem;background:var(--tr-paper);border-left:3px solid var(--tr-rust);font-weight:700}
.tr-route-scene{min-width:0;padding:12px;background:var(--surface);border:1px solid var(--line);box-shadow:12px 12px 0 var(--tr-paper)}
.tr-map-viewport{overflow:auto;max-height:430px;background:var(--tr-sea);border:1px solid var(--line);overscroll-behavior-inline:contain;scrollbar-color:var(--tr-rust) var(--tr-sea)}
.tr-route-svg{display:block;width:100%;min-width:700px;height:auto;max-width:none}
.tr-route-svg .bm-sea{fill:var(--tr-sea)}.tr-route-svg .bm-grat{fill:none;stroke:var(--tr-grid);stroke-width:.6;vector-effect:non-scaling-stroke}
.tr-route-svg .bm-land{fill:var(--tr-land);stroke:var(--tr-muted);stroke-width:.7;vector-effect:non-scaling-stroke;stroke-linejoin:round}.tr-route-svg .bm-desert{fill:url(#stipple)}.tr-route-svg .stip{fill:var(--tr-grid)}.tr-route-svg .bm-mount{fill:url(#hatch)}.tr-route-svg .hatchline{stroke:var(--tr-muted);stroke-width:1}
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.tr-route-svg .seg{fill:none;stroke:var(--tr-rust);stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round;vector-effect:non-scaling-stroke}.tr-route-svg .seg.uncertain{stroke-dasharray:5 5;stroke-width:2}.tr-route-svg .route-return .seg{stroke-width:1.4;opacity:.7}
.tr-route-svg .regions text{font-family:Georgia,serif;font-style:italic;font-size:13px;fill:var(--tr-muted);letter-spacing:.1em;text-anchor:middle;paint-order:stroke;stroke:var(--tr-halo);stroke-width:3px;stroke-linejoin:round}.tr-route-svg .regions .sea text{fill:var(--tr-muted);stroke:var(--tr-sea);font-size:12px}
.tr-route-svg .stop circle{fill:var(--surface);stroke:var(--tr-rust);stroke-width:2;vector-effect:non-scaling-stroke}.tr-route-svg .stop text{font-family:Arial,sans-serif;font-size:12px;font-weight:650;fill:var(--tr-label);paint-order:stroke;stroke:var(--tr-halo);stroke-width:3.2px;stroke-linejoin:round}.tr-route-svg .stop.is-current circle{fill:var(--tr-rust);stroke:var(--surface);stroke-width:3;r:6}.tr-route-svg .stop.is-current text{font-weight:800;fill:var(--tr-rust)}
.tr-map-key{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;padding:.7rem .25rem .1rem;font-size:13px;color:var(--muted)}.tr-map-key span{display:inline-flex;align-items:center;gap:.45rem}.tr-map-key i{display:inline-block;width:1.8rem;height:0;border-top:2px solid var(--tr-rust)}.tr-map-key .tr-line-dashed{border-top-style:dashed}
.tr-instrument{padding:clamp(1.2rem,4vw,4rem);background:var(--surface);border:1px solid var(--line);box-shadow:12px 12px 0 var(--tr-paper)}
.tr-instrument-heading{max-width:760px;margin:0 auto 2rem;text-align:center}.tr-instrument-heading h2{font-size:clamp(34px,5.5vw,70px);margin:.4rem 0 1rem}.tr-instrument-heading>p:last-child{max-width:62ch;margin:auto;color:var(--muted)}
.tr-instrument-layout{display:grid;grid-template-columns:minmax(235px,.72fr) minmax(0,1.28fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.tr-path-list{display:grid;align-content:start;border-right:1px solid var(--line)}
.tr-path-button{display:grid;grid-template-columns:96px minmax(0,1fr) 20px;align-items:center;gap:.55rem;min-height:64px;padding:.65rem .8rem;border:0;border-bottom:1px solid var(--line);border-radius:0;text-align:left;background:transparent;font-size:15px;font-weight:700}
.tr-path-button:last-child{border-bottom:0}.tr-path-button:hover,.tr-path-button.is-active{background:var(--tr-paper);color:var(--ink)}.tr-path-button.is-active{box-shadow:inset 4px 0 var(--tr-rust)}.tr-path-no{font-size:11px;letter-spacing:0}
.tr-answer{min-width:0;padding:clamp(1rem,3vw,2.4rem)}.tr-answer-date{font:650 15px/1.4 Plex,monospace;color:var(--tr-rust)}.tr-answer-label{font:700 14px/1.4 Plex,monospace;letter-spacing:.025em;color:var(--tr-forest)}.tr-answer-copy{max-width:62ch;font-size:18px;color:var(--muted)}.tr-evidence-note{max-width:65ch;padding:.8rem 1rem;background:var(--tr-paper);font-size:14px;line-height:1.5;color:var(--ink)}
.tr-card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;margin-top:1.5rem}.tr-card{min-width:0;border-top:2px solid var(--tr-forest);padding:.8rem 0}.tr-card-label{font-size:10px;letter-spacing:.05em}.tr-card h3{font-size:19px;margin:.45rem 0}.tr-card h3 a{text-decoration-thickness:1px;text-underline-offset:.18em}.tr-card>p:last-child{font-size:14px;line-height:1.5;color:var(--muted);margin:0}
.tr-map-method{max-width:84ch;margin:1.3rem auto 0;font-size:14px;line-height:1.55;color:var(--muted)}.tr-all{display:flex;align-items:center;justify-content:space-between;gap:1rem;width:max-content;max-width:100%;min-height:48px;margin:1.5rem auto 0;padding:.65rem .9rem;border:1px solid var(--line);font-weight:750;text-decoration:none}.tr-all:hover{background:var(--tr-paper)}
.tr-chapters{max-width:1120px;margin:clamp(4rem,10vw,10rem) auto 0}.tr-chapter{display:grid;grid-template-columns:64px minmax(0,1fr);gap:1.3rem;padding:2.5rem 0;border-top:1px solid var(--line);scroll-margin-top:2rem}.tr-number{padding-top:.5rem}.tr-chapter h2{max-width:18ch;font-family:Bricolage,Arial,sans-serif;font-size:clamp(32px,5vw,58px);font-weight:750;line-height:1.03}.tr-chapter>div>p{max-width:68ch;font-size:17px;color:var(--muted)}
.tr-path-button:focus-visible,.tr-all:focus-visible,.tr-card a:focus-visible,.tr-map-viewport:focus-visible{outline:3px solid var(--tr-rust);outline-offset:3px}
@media(max-width:850px){.tr-opening{grid-template-columns:1fr}.tr-route-scene{max-width:100%}.tr-map-viewport{max-height:340px}.tr-instrument-layout{grid-template-columns:1fr}.tr-path-list{border-right:0;border-bottom:1px solid var(--line)}.tr-path-button{min-height:56px}}
@media(max-width:560px){.travellers-feature{padding:2.4rem 16px}.tr-opening{gap:1.5rem;margin-bottom:3rem}.tr-opening h1{font-size:clamp(44px,13vw,66px)}.tr-route-scene{padding:7px;box-shadow:5px 5px 0 var(--tr-paper)}.tr-map-viewport{max-height:260px}.tr-route-svg{min-width:680px}.tr-map-key{font-size:12px}.tr-instrument{padding:1rem;box-shadow:5px 5px 0 var(--tr-paper)}.tr-instrument-heading{text-align:left}.tr-instrument-heading>p:last-child{margin:0}.tr-path-button{grid-template-columns:90px minmax(0,1fr) 18px;padding-inline:.55rem;font-size:14px}.tr-answer{padding:1rem .2rem}.tr-card-grid{grid-template-columns:1fr;gap:.5rem}.tr-chapter{grid-template-columns:34px minmax(0,1fr);gap:.55rem;padding:1.8rem 0}.tr-chapter h2{font-size:clamp(30px,9vw,44px)}}

.tr-lab{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:2rem;align-items:start}.tr-lab>.tr-opening{display:block;grid-column:1;margin:0}.tr-lab>.tr-route-scene{grid-column:2;grid-row:1/span 2;position:sticky;top:12px;min-width:0}.tr-lab>.tr-instrument{grid-column:1;min-width:0}.tr-instrument-layout{grid-template-columns:minmax(0,1fr)}.tr-path-list{border-right:0;border-bottom:1px solid var(--line)}.tr-route-svg{min-width:1200px}.tr-route-svg [data-tr-stop]{cursor:pointer}.tr-route-svg [data-tr-stop]:focus{outline:none}.tr-route-svg [data-tr-stop]:focus circle{stroke-width:5}.tr-chapters{margin-top:4rem}@media(max-width:850px){.tr-lab{display:flex;flex-direction:column;gap:1.5rem}.tr-lab>.tr-opening,.tr-lab>.tr-route-scene,.tr-lab>.tr-instrument{width:100%}.tr-lab>.tr-route-scene{position:sticky;top:8px;z-index:5;background:var(--tr-paper);padding:5px}.tr-map-viewport{height:220px;max-height:28svh}.tr-route-svg{min-width:1200px}.tr-map-key{font-size:11px;margin-top:.3rem}.tr-route-scene{box-shadow:none}}

.tr-route-svg .stop circle.tr-hit{fill:transparent;stroke:none;r:30}

.tr-map-key{color:var(--tr-ink)}