:root{--bg:#f6f3ec;--frame-bg:#eee9de;--surface:#fffdf8;--ink:#26282a;--muted:#676a68;--line:#ddd7ca;--accent:#2f5d6e;--accent-soft:#dfe9ec;--warn:#9a5b12;--focus:#c0712f;--shadow:0 2px 14px #28241c1f;--cat-land:#c6a00d;--cat-community:#20b8d2;--cat-culture:#7b3083;--cat-business:#7f4800;--cat-shops:#eb7996;--cat-transport:#3272c9;--cat-parks:#1e9249;--sans:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic UI", "Yu Gothic", Meiryo, system-ui, -apple-system, "Segoe UI", sans-serif;--header-h:52px;--sidebar-w:380px;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--frame-bg:#111214;--bg:#17191b;--surface:#1f2225;--ink:#e8e6e1;--muted:#a3a29c;--line:#34383b;--accent:#8fbccb;--accent-soft:#24343a;--warn:#e2b46c;--focus:#e09a5b;--shadow:0 2px 14px 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var(--line);z-index:20;align-items:center;gap:16px;padding:0 16px;display:flex;position:relative}.brand{color:var(--ink);white-space:nowrap;align-items:center;gap:8px;text-decoration:none;display:flex}.brand-title{letter-spacing:.02em;font-weight:700}.badge{border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:1px 6px;font-size:11px}.site-nav{scrollbar-width:none;flex:1;gap:14px;min-width:0;display:flex;overflow-x:auto}.site-nav a{color:var(--muted);white-space:nowrap;padding:4px 0;font-size:14px;text-decoration:none}.site-nav a[aria-current=page]{color:var(--ink);border-bottom:2px solid var(--accent)}.lang-switch{border:1px solid var(--line);white-space:nowrap;border-radius:999px;padding:3px 12px;font-size:14px;text-decoration:none}.main-doc{max-width:760px;margin:0 auto;padding:24px 16px 48px}.site-footer{max-width:760px;color:var(--muted);border-top:1px solid var(--line);margin:0 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h1{color:var(--muted);margin:0;font-size:15px;font-weight:600}.year-display{font-variant-numeric:tabular-nums;letter-spacing:.01em;font-size:30px;font-weight:700}.timeline-list{scroll-behavior:smooth;overscroll-behavior:contain;flex:1;min-height:0;overflow-y:auto}.timeline-list:after{content:"";height:40vh;display:block}.era h2{z-index:1;letter-spacing:.04em;background:var(--surface);border-bottom:1px solid var(--line);color:var(--accent);margin:0;padding:8px 16px;font-size:13px;position:sticky;top:0}.era ol{margin:0;padding:0;list-style:none}.ev{border-bottom:1px solid var(--line)}.ev a{color:var(--ink);padding:10px 16px 12px 22px;text-decoration:none;display:block;position:relative}.ev a:before{content:"";background:var(--line);border-radius:50%;width:6px;height:6px;position:absolute;top:18px;left:10px}.ev.current a{background:var(--accent-soft)}.ev.current a:before{background:var(--accent)}.ev time{color:var(--muted);font-variant-numeric:tabular-nums;font-size:13px;display:block}.ev .title{font-weight:600;display:block}.ev .summary{color:var(--muted);font-size:14px;display:block}.ev .has-place:after{content:" ●";color:var(--accent);vertical-align:middle;font-size:10px}.map-wrap{position:absolute;inset:0}#map{background:#c8d5da;position:absolute;inset:0}.noscript-note{text-align:center;color:var(--muted);place-content:center;display:grid;position:absolute;inset:16px}.control{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:10px}.layer-switch{top:var(--gap);right:var(--gap);border-radius:var(--float-radius);z-index:3;flex-direction:column;gap:4px;max-width:260px;padding:6px;display:flex;position:absolute}.layer-switch .opts{background:var(--bg);border-radius:8px;gap:2px;padding:2px;display:flex}.layer-switch label{text-align:center;cursor:pointer;white-space:nowrap;border-radius:6px;flex:1;padding:4px 10px;font-size:13px}.layer-switch input{opacity:0;pointer-events:none;position:absolute}.layer-switch 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0;border:0;flex:none;width:100%;height:20px;display:block;position:relative}.sheet-handle:before{content:"";background:var(--line);border-radius:2px;width:36px;height:4px;margin-left:-18px;position:absolute;top:8px;left:50%}.sheet-toggle{z-index:2;width:36px;height:36px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:8px;place-items:center;display:grid;position:absolute;top:20px;right:4px}.sheet-toggle svg{transition:transform .2s}.sheet-toggle[aria-expanded=false] svg{transform:rotate(180deg)}.timeline-head,.sheet-place-bar{touch-action:none;flex:none;align-items:center;gap:8px;height:36px;padding:0 44px 0 14px;display:flex}.timeline-head h1{font-size:13px}.year-display{margin-left:auto;font-size:18px}.head-current{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:13px;font-weight:600;overflow:hidden}.app[data-sheet=min] .timeline-head h1{display:none}.app[data-sheet=min] .head-current{display:block}.era h2{padding:5px 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