.ledger{--paper: #f2f4f0;--paper-2: #e9ede7;--paper-3: #dde3db;--ink: #16202b;--ink-2: #48535f;--muted: #76818c;--rule: #d3d9d1;--rule-2: #bfc7bd;--neutral-mid: #e2e6e0;--indigo: #2b5fad;--vermilion: #c9472f;--teal: #1f8f74;--ochre: #b07a12;--indigo-soft: rgba(43, 95, 173, .14);--verm-soft: rgba(201, 71, 47, .14);--teal-soft: rgba(31, 143, 116, .14);--seal: #c9472f;--focus: #2b5fad;--display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", Georgia, serif;--body: "Noto Sans JP Variable", "Noto Sans JP", "Hiragino Sans", "Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;background:var(--paper);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.62;-webkit-font-smoothing:antialiased}.ledger a{color:var(--indigo)}.ledger :focus-visible{outline:2px solid var(--focus);outline-offset:2px}.ledger .page{max-width:1180px;margin:0 auto;padding-inline:20px;padding-block:20px 96px}.ledger .frame{display:grid;grid-template-columns:1fr;gap:0 40px}.ledger .frame>*{min-width:0}.ledger main{min-width:0}@media(min-width:1100px){.ledger .frame{grid-template-columns:200px minmax(0,1fr)}}.ledger h1,.ledger h2,.ledger h3{font-family:var(--display);font-weight:600;text-wrap:balance;margin:0;line-height:1.18}.ledger h1{font-size:clamp(38px,6vw,64px);letter-spacing:-.005em}.ledger h2{font-size:clamp(26px,3.4vw,36px);margin-top:10px}.ledger h3{font-size:20px;margin-top:28px;margin-bottom:6px}.ledger .eyebrow{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.ledger .chapter-num{font-family:var(--display);font-size:15px;color:var(--seal);letter-spacing:.2em}.ledger p{margin:0 0 1.1em}.ledger .reading{max-width:66ch}.ledger .reading p{font-size:17px}.ledger .reading ol.points{list-style:decimal}.ledger .reading ul.points{list-style:disc}.ledger .reading .points{padding-left:1.4em;margin:0 0 1.1em;font-size:17px}.ledger .reading .points li{margin-bottom:10px}.ledger .lede{font-size:20px;line-height:1.5;color:var(--ink-2)}.ledger small,.ledger .small{font-size:13px;color:var(--muted)}.ledger .mono{font-variant-numeric:tabular-nums}.ledger b.fact{font-weight:600;color:var(--ink)}.ledger .ja{font-family:var(--body);color:var(--ink-2)}.ledger hr.rule{border:0;border-top:1px solid var(--rule);margin:40px 0}.ledger .cover{padding-bottom:24px;border-bottom:1px solid var(--rule)}.ledger .masthead{--row: 32px;padding-top:var(--row);background-image:repeating-linear-gradient(to bottom,transparent 0 calc(var(--row) - 1px),color-mix(in srgb,var(--rule) 45%,transparent) calc(var(--row) - 1px) var(--row))}@media(max-width:720px){.ledger .masthead{--row: 28px}}.ledger .masthead .eyebrow{line-height:var(--row)}.ledger .masthead h1,.ledger .masthead .kanji{display:block;line-height:calc(var(--row) * 2)}.ledger .masthead .kanji{font-family:var(--display);font-size:clamp(28px,4vw,44px);color:var(--ink-2);font-weight:400}.ledger .masthead .subtitle{font-family:var(--display);font-size:clamp(18px,2.2vw,24px);line-height:var(--row);color:var(--ink-2);margin:0}.ledger .masthead .dek{font-size:clamp(18px,2.2vw,22px);line-height:var(--row);color:var(--ink-2);max-width:32em;margin:var(--row) 0 0}.ledger .ph{display:inline-block}.ledger .hero{display:grid;grid-template-columns:1fr;gap:20px 40px;margin-top:34px;align-items:end}@media(min-width:820px){.ledger .hero{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr)}}.ledger .hero-figure{font-size:clamp(46px,7.5vw,84px);font-weight:600;line-height:1;letter-spacing:-.01em;color:var(--ink)}.ledger .hero-cap{margin-top:10px;font-size:15px;color:var(--ink-2)}.ledger .tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.ledger .tile{padding:12px 14px;border-top:1px solid var(--rule-2)}.ledger .tile .l{font-size:12.5px;color:var(--muted);letter-spacing:.02em}.ledger .tile .v{font-size:24px;font-weight:600;line-height:1.15;margin-top:4px}.ledger .tile .d{font-size:13px;color:var(--ink-2);margin-top:2px}.ledger .tile .v.up{color:var(--ink)}.ledger .strip{margin-top:26px}.ledger .strip svg{width:100%;height:auto;display:block}.ledger section.chapter{padding-block:56px 12px;scroll-margin-top:24px;content-visibility:auto;contain-intrinsic-size:auto 1400px}.ledger section.chapter header{max-width:66ch;margin-bottom:22px}.ledger section.chapter header .thesis{font-family:var(--display);font-size:clamp(19px,2.2vw,23px);line-height:1.45;color:var(--ink);margin:14px 0 0;font-weight:400}.ledger .plate{margin:22px 0 10px;padding:18px 18px 12px;background:var(--paper-2);border:1px solid var(--rule);border-radius:4px;max-width:960px}.ledger .plate .plate-head{display:flex;flex-wrap:wrap;gap:6px 16px;align-items:baseline;justify-content:space-between;margin-bottom:8px}.ledger .plate .plate-title{font-weight:600;font-size:15px}.ledger .plate .plate-sub{font-size:13px;color:var(--muted)}.ledger .plate .plate-note{font-size:12.5px;color:var(--muted);margin-top:8px;line-height:1.45}.ledger .plate svg{display:block;width:100%;height:auto;font-family:var(--body)}.ledger .plate .legend{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:12.5px;color:var(--ink-2);margin:4px 0 6px}.ledger .plate .legend span{display:inline-flex;align-items:center;gap:7px}.ledger .plate .legend i{display:inline-block;width:18px;height:2px;border-radius:2px}.ledger .plate .legend i.rect{width:12px;height:12px;border-radius:2px}.ledger .plate .legend i.hollow{width:10px;height:10px;border-radius:50%;border:2px solid var(--ink-2);background:transparent}.ledger .controls{display:flex;flex-wrap:wrap;gap:8px 12px;align-items:center;margin:2px 0 10px;font-size:13px}.ledger .controls label{display:inline-flex;align-items:center;gap:6px;color:var(--ink-2);white-space:nowrap}.ledger .btn{font:inherit;font-size:13px;padding:5px 10px;border:1px solid var(--rule-2);background:var(--paper);color:var(--ink);border-radius:3px;cursor:pointer}.ledger .btn[aria-pressed=true],.ledger .btn.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}.ledger .btn:hover{border-color:var(--ink-2)}.ledger input[type=range]{width:min(320px,100%);accent-color:var(--seal)}.ledger .figwrap{position:relative}.ledger table{border-collapse:collapse;width:100%;font-size:13.5px}.ledger th,.ledger td{text-align:left;padding:7px 8px;border-bottom:1px solid var(--rule);vertical-align:top}.ledger th{font-weight:600;font-size:12px;letter-spacing:.04em;color:var(--muted);text-transform:uppercase}.ledger td.num,.ledger th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}.ledger th.nowrap,.ledger td.nowrap{white-space:nowrap}.ledger tr:hover td{background:color-mix(in srgb,var(--paper-3) 55%,transparent)}.ledger .tablewrap{overflow-x:auto;max-width:960px;margin:14px 0}.ledger .tag{display:inline-block;font-size:11px;letter-spacing:.04em;padding:1px 6px;border-radius:2px;border:1px solid var(--rule-2);color:var(--ink-2);white-space:nowrap}.ledger .tag.struct{border-color:var(--seal);color:var(--seal)}.ledger .tag.pol{border-color:var(--ochre);color:var(--ochre)}.ledger .tview{display:none;margin-top:10px}.ledger .tview.show{display:block}.ledger .chart-table-toggle{margin-left:auto}.ledger .stamp{display:inline-block;font-family:var(--display);color:var(--seal);border:2px solid var(--seal);border-radius:4px;padding:2px 8px;font-size:13px;letter-spacing:.12em;transform:rotate(-4deg);opacity:.92}.ledger .explorer{position:relative;max-width:960px}.ledger .explorer-search{max-width:420px}.ledger .co-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:10px;margin:10px 0 4px}.ledger .chips{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 0}.ledger .maplayout{display:grid;grid-template-columns:1fr;gap:16px 24px}@media(min-width:860px){.ledger .maplayout{grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}}.ledger .map path{stroke:var(--paper-2);stroke-width:.7;cursor:pointer;transition:opacity .15s}.ledger .map path.sel{stroke:var(--ink);stroke-width:1.4}.ledger .scale-legend{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--ink-2);margin-top:6px}.ledger .scale-legend .bar{flex:1;height:10px;border-radius:2px;max-width:260px}.ledger .ranklist{font-size:13.5px;max-height:540px;overflow:auto;border:1px solid var(--rule);border-radius:3px;padding:0 8px}.ledger .ranklist .row{display:grid;grid-template-columns:20px 1fr auto;gap:8px;padding:4px 0;border-bottom:1px solid var(--rule);align-items:center;cursor:pointer}.ledger .ranklist .row:hover{background:color-mix(in srgb,var(--paper-3) 55%,transparent)}.ledger .ranklist .row .v{font-variant-numeric:tabular-nums}.ledger .ranklist .row.sel{background:var(--paper-3)}.ledger .notes{list-style:disc;padding-left:1.25em}.ledger .notes li{margin-bottom:8px}.ledger footer{margin-top:60px;padding-top:20px;border-top:1px solid var(--rule);font-size:13.5px;color:var(--ink-2)}.ledger .kiji-cta{margin-top:30px;padding:18px 20px;border:1px solid var(--rule-2);border-radius:4px;background:var(--paper-2);max-width:960px}.ledger .kiji-cta h3{margin-top:0}.ledger .kiji-cta p{margin:0}.ledger .keyfigs{margin-top:34px;max-width:860px}.ledger .keyfigs .tile .v{font-size:clamp(28px,4vw,40px)}.ledger .keyfigs-note{max-width:66ch;margin:6px 0 0}.ledger .sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}@media(prefers-reduced-motion:reduce){.ledger *{transition:none!important;animation:none!important}}.ledger .pulse{animation:pulse 1.6s ease-in-out 1}@keyframes pulse{0%{transform:scale(1)}40%{transform:scale(1.06)}to{transform:scale(1)}}.ledger-tip{--paper: #f2f4f0;--paper-2: #e9ede7;--paper-3: #dde3db;--ink: #16202b;--ink-2: #48535f;--muted: #76818c;--rule: #d3d9d1;--rule-2: #bfc7bd;--neutral-mid: #e2e6e0;--indigo: #2b5fad;--vermilion: #c9472f;--teal: #1f8f74;--ochre: #b07a12;--indigo-soft: rgba(43, 95, 173, .14);--verm-soft: rgba(201, 71, 47, .14);--teal-soft: rgba(31, 143, 116, .14);--seal: #c9472f;--focus: #2b5fad;--display: "Shippori Mincho", "Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", Georgia, serif;--body: "Noto Sans JP Variable", "Noto Sans JP", "Hiragino Sans", "Noto Sans JP", system-ui, -apple-system, "Segoe UI", sans-serif;position:absolute;pointer-events:none;z-index:20;background:var(--paper);color:var(--ink);border:1px solid var(--rule-2);border-radius:3px;padding:8px 10px;font-size:12.5px;line-height:1.35;box-shadow:0 4px 14px #0000001f;min-width:130px;max-width:280px;display:none}.ledger-tip .th{color:var(--muted);margin-bottom:4px;font-size:11.5px;letter-spacing:.04em}.ledger-tip .row{display:flex;justify-content:space-between;gap:14px;align-items:baseline}.ledger-tip .row i{display:inline-block;width:12px;height:2px;border-radius:1px;margin-right:6px;vertical-align:middle}.ledger-tip .row b{font-weight:600;font-variant-numeric:tabular-nums}.ledger-tip .row span{color:var(--ink-2)}