.rd-main{width:100%;min-width:0;max-width:760px;margin:0 auto;padding:0 20px 96px}.rd-head{padding:40px 0 28px}.rd-kicker{letter-spacing:.12em;text-transform:uppercase;color:var(--brand-700);font-size:12px;font-weight:600;display:inline-block}.rd-title{font:600 34px/1.15 var(--font-serif);letter-spacing:-.01em;margin:10px 0 0}.rd-sub{color:var(--ink-2);max-width:56ch;margin:12px 0 0}.rd-doors{grid-template-columns:1fr 1fr;gap:10px;margin:22px 0 0;display:grid}.rd-door{border:1px solid var(--line);border-radius:var(--r-xl);background:var(--surface);min-height:44px;color:var(--ink);flex-direction:column;gap:3px;padding:12px 14px;text-decoration:none;display:flex}.rd-door:hover{border-color:var(--brand-700)}.rd-door:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}.rd-door[aria-current=page]{background:var(--brand-700);border-color:var(--brand-700);color:#fff}.rd-door-name{font:600 16px/1.2 var(--font-sans)}.rd-door-note{color:var(--muted);font-size:13px;line-height:1.4}.rd-door[aria-current=page] .rd-door-note{color:var(--brand-100)}@media (max-width:420px){.rd-doors{grid-template-columns:1fr}}.rd-stats{flex-wrap:wrap;gap:10px;margin:20px 0 0;display:flex}.rd-stat{border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface);color:var(--muted);align-items:baseline;gap:7px;padding:7px 13px;font-size:13px;display:inline-flex}.rd-stat b{color:var(--ink);font-variant-numeric:tabular-nums;font-size:15px;font-weight:600}.rd-band{padding:30px 0 6px;position:relative}.rd-band-head{flex-wrap:wrap;align-items:baseline;gap:12px;margin:0 0 4px;display:flex}.rd-band-name{font:600 19px/1.3 var(--font-serif);color:var(--era-ink);margin:0}.rd-band-span{letter-spacing:.06em;color:var(--era-ink);border-radius:var(--r-pill);background:var(--era-band);font-variant-numeric:tabular-nums;padding:3px 9px;font-size:12px;font-weight:600}.rd-track{padding:14px 0 20px;position:relative}.rd-track:before{content:"";background:var(--era-band);border-radius:2px;width:3px;margin-left:-1.5px;position:absolute;top:0;bottom:0;left:50%}.rd-stops{margin:0;padding:0;list-style:none;position:relative;overflow-x:clip}.rd-stops li{justify-content:center;padding:11px 0;display:flex}.rd-stops li:nth-child(4n+1){transform:translate(calc(-1*clamp(0px,9vw,58px)))}.rd-stops li:nth-child(4n+3){transform:translate(clamp(0px,9vw,58px))}.rd-stop{cursor:pointer;width:132px;color:inherit;font:inherit;text-align:center;background:0 0;border:0;flex-direction:column;align-items:center;gap:8px;padding:0;display:flex}.rd-dot{background:var(--surface);border:3px solid var(--era-ink);width:58px;height:58px;color:var(--era-ink);font:600 17px/1 var(--font-sans);font-variant-numeric:tabular-nums;box-shadow:0 2px 0 var(--era-band);border-radius:50%;place-items:center;transition:transform .12s,box-shadow .12s;display:grid}.rd-stop:hover .rd-dot{box-shadow:0 4px 0 var(--era-band);transform:translateY(-2px)}.rd-stop:active .rd-dot{box-shadow:0 1px 0 var(--era-band);transform:translateY(1px)}.rd-stop:focus-visible{outline:none}.rd-stop:focus-visible .rd-dot{outline:2px solid var(--brand-700);outline-offset:3px}.rd-stop[data-state=scenery] .rd-dot{border-style:dashed;border-color:var(--faint);color:var(--faint);box-shadow:none}.rd-stop[data-state=scenery] .rd-stop-label{color:var(--faint)}.rd-stop-label{color:var(--ink);font-size:13px;font-weight:600;line-height:1.3}.rd-stop-note{color:var(--muted);font-size:12px}.rd-check .rd-dot{background:var(--era-ink);color:#fff;border-color:var(--era-ink)}.rd-check[data-state=scenery] .rd-dot{background:var(--well);color:var(--faint);border-color:var(--faint);border-style:dashed}.rd-empty{text-align:center;border:1px dashed var(--line);border-radius:var(--r-xl);background:var(--surface);max-width:340px;color:var(--muted);margin:8px auto 0;padding:16px 18px;font-size:13px}.rd-panel{z-index:2;overscroll-behavior:contain;border:1px solid var(--era-ink);border-radius:var(--r-xl);background:var(--surface);border-top-width:3px;max-height:70vh;margin:28px 0 0;padding:18px 20px;position:sticky;bottom:0;overflow-y:auto;box-shadow:0 -2px 16px #16202b12}.rd-panel-head{background:var(--surface);z-index:1;justify-content:space-between;align-items:baseline;gap:12px;margin:-18px -20px 0;padding:18px 20px 8px;display:flex;position:sticky;top:-18px}.rd-panel-title{font:600 17px/1.3 var(--font-sans);color:var(--era-ink);margin:0}.rd-panel-close{cursor:pointer;color:var(--muted);border-radius:var(--r-sm);background:0 0;border:0;margin:-4px -8px 0 0;padding:4px 8px;font-size:13px}.rd-panel-close:hover{color:var(--ink);background:var(--well)}.rd-panel-x{width:44px;height:44px;font:400 26px/1 var(--font-sans);color:var(--muted);place-items:center;margin:-10px -12px 0 0;display:grid}.rd-panel-x:hover{color:var(--ink)}.rd-scrim{display:none}.rd-facts{gap:8px;margin:12px 0 0;padding:0;list-style:none;display:grid}.rd-facts li{border-radius:var(--r-md);background:var(--era-band);color:var(--ink);align-items:baseline;gap:10px;padding:9px 12px;font-size:14px;line-height:1.45;display:flex}.rd-facts li:before{content:"";background:var(--era-ink);border-radius:50%;flex:none;width:7px;height:7px;transform:translateY(-2px)}.rd-panel-note{color:var(--muted);margin:12px 0 0;font-size:13px}.rd-lesson{color:var(--ink-2);max-width:58ch;margin:12px 0 4px;font-size:15px;line-height:1.6}.rd-lesson p{margin:0 0 10px}.rd-lesson strong{color:var(--era-ink);font-weight:600}.rd-tables{justify-items:start;gap:14px;margin:12px 0 0;display:grid}.rd-table{border-collapse:separate;border-spacing:0;border-radius:var(--r-md);width:auto;max-width:100%;font-size:14px;line-height:1.4;overflow:hidden}.rd-table-cap{text-align:left;letter-spacing:.08em;text-transform:uppercase;color:var(--era-ink);padding:0 0 6px;font-size:12px;font-weight:600}.rd-table th,.rd-table td{text-align:left;vertical-align:top;background:var(--era-band);border-top:1px solid var(--surface);padding:9px 10px}.rd-table tr:first-child th,.rd-table tr:first-child td{border-top:0}.rd-table-subject{color:var(--ink);white-space:nowrap;width:1%;padding-right:4px;font-weight:600}.rd-table-arrow{text-align:center;width:24px;color:var(--era-ink);padding:9px 0;font-weight:600}@media (max-width:480px){.rd-table-subject{white-space:normal;width:48%}}.rd-table-object{color:var(--ink)}.rd-note{color:var(--muted);margin:3px 0 0;font-size:13px;line-height:1.45}.rd-table-year{color:var(--muted);font-variant-numeric:tabular-nums;font-size:13px}.rd-flag{object-fit:cover;vertical-align:middle;border:1px solid var(--line);background:var(--surface);border-radius:2px;width:27px;height:16px;margin:0 8px 2px 0;display:inline-block}.rd-nation-dot{vertical-align:middle;border-radius:50%;width:9px;height:9px;margin:0 7px 1px 0;display:inline-block}@media (max-width:560px){.rd-main{padding:0 16px 72px}.rd-title{font-size:28px}.rd-stop{width:112px}.rd-dot{width:52px;height:52px;font-size:16px}}@media (prefers-reduced-motion:reduce){.rd-stop:hover .rd-dot,.rd-stop:active .rd-dot{transform:none}}.rd-map{border-top:1px solid var(--line);margin:52px 0 0;padding:28px 0 0}.rd-map-name{color:var(--ink)}.rd-map-span{background:var(--well);color:var(--muted)}.rd-map-note{color:var(--muted);max-width:52ch;margin:6px 0 20px;font-size:13px}.rd-mapboard{grid-template-columns:minmax(0,5fr) minmax(0,6fr);align-items:start;gap:16px;display:grid}.rd-mapboard-map{padding:6px}.rd-mapboard-map .ukmap{width:100%;height:auto;max-height:420px;display:block}.rd-region{border:1px solid var(--line);border-radius:var(--r-xl);background:var(--surface);box-shadow:var(--shadow-card);padding:14px 16px}.rd-region-name{font:600 15px/1.3 var(--font-sans);color:var(--ink);margin:0 0 10px}.rd-region-empty{color:var(--faint);margin:0;font-size:13px}.rd-region-facts{gap:6px;margin:0;display:grid}.rd-region-facts>div{align-items:baseline;gap:8px;display:flex}.rd-region-facts dt{color:var(--muted);flex:none;min-width:92px;font-size:12px}.rd-region-facts dd{color:var(--ink);margin:0;font-size:14px;font-weight:600}.rd-stops-heading{font:600 15px/1.3 var(--font-sans);color:var(--ink);margin:26px 0 10px}.rd-stop-row{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.rd-chip-check{background:var(--brand-700);color:#fff;border-color:var(--brand-700)}.rd-chip-check:hover{background:var(--brand-800)}.rd-chip-count{border-radius:var(--r-pill);background:var(--brand-700);color:#fff;font-variant-numeric:tabular-nums;margin-left:4px;padding:1px 6px;font-size:11px;display:inline-block}.rd-chip[data-state=scenery] .rd-chip-count{background:var(--faint)}.rd-chip{border:1px solid var(--brand-100);border-radius:var(--r-pill);background:var(--brand-50);color:var(--brand-800);font:600 13px/1.2 var(--font-sans);cursor:pointer;padding:6px 13px;transition:background .12s,border-color .12s}.rd-chip:hover{background:var(--brand-100);border-color:var(--brand-700)}.rd-chip[data-state=scenery]{border-style:dashed;border-color:var(--line);background:var(--surface);color:var(--faint)}.rd-chip[data-state=scenery]:hover{background:var(--well);border-color:var(--faint)}.rd-map-panel{border-color:var(--line);border-top-color:var(--brand-700);width:max-content;max-width:100%;box-shadow:var(--shadow-card);position:static}.rd-map-panel .rd-panel-title{color:var(--ink)}.rd-map-panel .rd-facts li{background:var(--well)}.rd-map-panel .rd-facts li:before{background:var(--brand-700)}@media (max-width:640px){.rd-panel,.rd-map-panel{z-index:40;width:auto;max-height:85svh;padding-bottom:calc(18px + env(safe-area-inset-bottom,0px));border-radius:var(--r-xl) var(--r-xl) 0 0;border-width:3px 0 0;margin:0;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -8px 32px #16202b2e}.rd-scrim{z-index:39;background:#16202b61;border:0;padding:0;display:block;position:fixed;inset:0}.rd-mapboard{grid-template-columns:1fr}.rd-mapboard-map .ukmap{max-height:300px}}.rd-go{border-radius:var(--r-pill);background:var(--brand-700);color:#fff;min-height:44px;font:600 14px/1.2 var(--font-sans);cursor:pointer;border:0;margin:14px 0 0;padding:10px 18px;transition:background .12s}.rd-go:hover{background:var(--brand-800)}.rd-quiz-meta{color:var(--muted);font-variant-numeric:tabular-nums;align-items:center;gap:10px;margin:2px 0 12px;font-size:12px;display:flex}.rd-combo{border-radius:var(--r-pill);background:var(--amber-50);color:var(--amber-700);padding:2px 9px;font-weight:600}.rd-quiz-ask{font:600 17px/1.4 var(--font-sans);color:var(--ink);margin:0 0 14px}.rd-options{gap:8px;margin:0;padding:0;list-style:none;display:grid}.rd-option{text-align:left;cursor:pointer;border:1.5px solid var(--line);border-radius:var(--r-lg);background:var(--surface);width:100%;color:var(--ink);font:500 15px/1.35 var(--font-sans);padding:12px 15px;transition:border-color .12s,background .12s}.rd-option[data-state=open]:hover{border-color:var(--brand-700);background:var(--brand-50)}.rd-option:disabled{cursor:default}.rd-option[data-state=pressed]{border-color:var(--brand-700);background:var(--brand-50);color:var(--brand-700);border-width:2px;font-weight:600}.rd-option[data-state=pressed]:after{content:" ●";font-size:.85em}.rd-option[data-state=right]{border-color:var(--green-700);background:var(--green-50);color:var(--green-700);border-width:2px;font-weight:600}.rd-option[data-state=right]:after{content:" ✓"}.rd-option[data-state=wrong]{border-color:var(--red-700);background:var(--red-50);color:var(--red-700);border-width:2px;font-weight:600}.rd-option[data-state=wrong]:after{content:" ✕"}.rd-option[data-state=dimmed]{color:var(--muted);background:var(--paper)}.rd-feedback:empty{display:none}.rd-feedback-line{font:600 15px/1.3 var(--font-sans);color:var(--red-700);margin:16px 0 4px}.rd-feedback-line[data-correct=true]{color:var(--green-700)}.rd-feedback-fact{color:var(--ink-2);margin:0;font-size:14px;line-height:1.5}.rd-result{text-align:center;padding:10px 0 4px}.rd-result-score{color:var(--ink-2);margin:0;font-size:15px}.rd-result-score b{color:var(--ink);font-variant-numeric:tabular-nums;font-size:22px;font-weight:600}.rd-run{z-index:60;background:var(--paper);justify-content:center;align-items:flex-start;padding:24px 20px 48px;display:flex;position:fixed;inset:0;overflow-y:auto}.rd-run-inner{width:100%;max-width:560px;margin:auto 0}.rd-run-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;margin:0 0 20px;padding:0 0 18px;display:flex}.rd-run-title{font:600 15px/1.2 var(--font-sans);color:var(--ink)}.rd-result-actions{justify-content:center;align-items:center;gap:12px;margin-top:6px;display:flex}.rd-result-actions .rd-go{margin:0}@media (max-width:560px){.rd-run{padding:18px 16px 40px}.rd-run-inner{margin:0}}.rd-tf-statement{border-left:3px solid var(--brand-700);border-radius:0 var(--r-md) var(--r-md) 0;background:var(--well);font:500 17px/1.45 var(--font-sans);color:var(--ink);margin:0 0 16px;padding:14px 16px}.rd-ref-link{background:var(--well);border:1px solid var(--line);border-radius:var(--r-md);gap:2px;margin:34px 0 0;padding:16px 18px;display:grid}.rd-ref-link a{font:600 15px/1.3 var(--font-sans);color:var(--brand-700);text-decoration:none}.rd-ref-link a:hover{text-decoration:underline}.rd-ref-link span{color:var(--muted);font-size:13px}.rd-jump{flex-wrap:wrap;gap:6px;margin:26px 0 0;display:flex}.rd-jump-link{border:1px solid var(--line);background:var(--era-band);min-height:34px;font:600 12px/1 var(--font-sans);color:var(--era-ink);border-radius:999px;align-items:center;padding:0 12px;text-decoration:none;display:inline-flex}.rd-jump-link:hover{border-color:var(--era-ink)}.rd-jump-link:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}.rd-band-name,.rd-map-name{scroll-margin-top:88px}.rd-feedback-why{color:var(--muted);max-width:54ch;margin:4px 0 0;font-size:13px;line-height:1.45}.rd-index{border-top:1px solid var(--line);margin:56px 0 0;padding:30px 0 0}.rd-index-head{font:600 19px/1.3 var(--font-serif);color:var(--ink);margin:0}.rd-index-note{color:var(--muted);max-width:54ch;margin:8px 0 0;font-size:14px}.rd-index-era{margin:26px 0 0}.rd-index-era-name{font:600 14px/1.3 var(--font-sans);margin:0 0 8px}.rd-index-era-name a{color:var(--era-ink,var(--ink));text-decoration:none}.rd-index-era-name a:hover{text-decoration:underline}.rd-index-list{columns:2;column-gap:28px;margin:0;padding:0;list-style:none}.rd-index-list li{break-inside:avoid;margin:0 0 5px}.rd-index-list a{color:var(--ink-2);border-bottom:1px solid #0000;font-size:14px;line-height:1.45;text-decoration:none}.rd-index-list a:hover{color:var(--era-ink,var(--ink));border-bottom-color:currentColor}@media (max-width:560px){.rd-index-list{columns:1}.rd-index-list li{margin-bottom:7px}}