:root{color-scheme:light;--bg: #f7f7f5;--panel: #ffffff;--border: #ddd;--text: #1a1a1a;--muted: #767676;--accent: #2b5aa3;--warn: #8a4712;--warn-bg: #fffbeb;--accent-text: #ffffff;--warn-border: #f0d9a8;--th-bg: #f0f0ee;--shadow: rgba(0, 0, 0, .15)}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg: #121416;--panel: #1b1e21;--border: #363b40;--text: #e3e5e8;--muted: #9aa1a8;--accent: #7fa8ea;--accent-text: #0b1a33;--warn: #e8b15c;--warn-bg: #2f2512;--warn-border: #5c4520;--th-bg: #24282c;--shadow: rgba(0, 0, 0, .5)}}:root[data-theme=dark]{color-scheme:dark;--bg: #121416;--panel: #1b1e21;--border: #363b40;--text: #e3e5e8;--muted: #9aa1a8;--accent: #7fa8ea;--accent-text: #0b1a33;--warn: #e8b15c;--warn-bg: #2f2512;--warn-border: #5c4520;--th-bg: #24282c;--shadow: rgba(0, 0, 0, .5)}*{box-sizing:border-box}body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang TC,Noto Sans TC,Noto Sans CJK TC,Microsoft JhengHei,sans-serif;font-size:1rem;line-height:1.75}.wrap{max-width:calc(42rem + 32px);margin:0 auto;padding:0 16px}header{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;min-height:53px;padding:10px 20px;border-bottom:1px solid var(--border);background:var(--panel);line-height:1.5}header .name{font-size:1.25rem;font-weight:700;line-height:1.5;margin:0;color:var(--text);text-decoration:none}header .name{display:flex;align-items:center;gap:8px}header .name img{flex:none;width:28px;height:28px}header nav{margin-left:auto;display:flex;flex-wrap:wrap;gap:16px}header nav a{font-size:.9rem}.menu{position:relative}.icon-btn{display:flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:1px solid transparent;border-radius:50%;background:none;color:var(--muted);cursor:pointer}.icon-btn svg{width:22px;height:22px;fill:currentColor}.icon-btn:hover,.icon-btn[aria-expanded=true]{color:var(--text);border-color:var(--border)}.menu-list{position:absolute;top:calc(100% + 6px);right:0;z-index:20;min-width:180px;max-width:calc(100vw - 24px);padding:6px 0;background:var(--panel);border:1px solid var(--border);border-radius:8px;box-shadow:0 4px 16px var(--shadow)}.menu-item{display:block;padding:7px 14px;color:var(--text);font-size:.85rem;line-height:1.5;text-decoration:none}.menu-item:hover{background:var(--bg)}.menu-item[aria-current=true]{cursor:default}.menu-item[aria-disabled=true]{color:var(--muted);cursor:default}.menu-item[aria-disabled=true]:hover{background:none}.menu-item[data-lang]:before{content:"\2713";display:inline-block;width:1.3em;visibility:hidden}.menu-item[aria-current=true]:before{visibility:visible;color:var(--accent)}.menu-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:5px 14px;font-size:.85rem;line-height:1.5}nav a[aria-current=page]{color:var(--muted);text-decoration:none;cursor:default}.theme-select{font-size:.78rem;padding:2px 4px;border:1px solid var(--border);border-radius:6px;background:var(--panel);color:var(--text)}h1{font-size:1.6rem;line-height:1.4;margin:32px 0 8px;text-wrap:balance}h2{font-size:1.15rem;margin:40px 0 8px;text-wrap:balance}h3{font-size:1rem;margin:24px 0 4px}p,li{margin:8px 0}ul,ol{padding-left:1.4em}a{color:var(--accent)}a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.lede{font-size:1.1rem;color:var(--text)}.muted{color:var(--muted);font-size:.9rem}.panel{background:var(--panel);border:1px solid var(--border);border-radius:6px;padding:16px 20px;margin:24px 0}.note{background:var(--warn-bg);border:1px solid var(--warn-border);border-left:4px solid var(--warn);border-radius:4px;padding:12px 16px;margin:24px 0}.note strong{color:var(--warn)}.cta{display:inline-block;background:var(--accent);color:var(--accent-text);text-decoration:none;padding:10px 20px;border-radius:6px;font-weight:600;margin:8px 0}dl{margin:8px 0}dt{font-weight:600;margin-top:16px}dd{margin:4px 0 0;padding-left:0}table{border-collapse:collapse;width:100%;font-size:.92rem}th,td{border:1px solid var(--border);padding:8px 10px;text-align:left;vertical-align:top}th{background:var(--th-bg);font-weight:600}td ul{margin:0;padding-left:1.2em}td li+li{margin-top:4px}.table-wrap{overflow-x:auto;margin:16px 0}footer{display:flex;flex-wrap:wrap;align-items:center;gap:4px 16px;margin-top:56px;padding:4px 20px 20px;font-size:.78rem;line-height:1.5;color:var(--muted)}footer nav{display:flex;flex-wrap:wrap;gap:4px 16px}footer a{color:var(--muted)}footer a:hover{color:var(--accent)}footer p{margin:0}@media(max-width:860px){header{padding-left:12px;padding-right:12px}}@media(max-width:600px){header .name{margin-right:auto}header nav{order:1;flex-basis:100%;margin-left:0;gap:4px 10px}}.toc ol{padding-left:1.4em;margin:8px 0}.learn [id]{scroll-margin-top:16px}.learn h2{font-size:1.5rem;line-height:1.4;margin:64px 0 12px;padding-top:28px;border-top:1px solid var(--border)}.learn h2 .ch-num{display:block;font-size:.9rem;font-weight:600;color:var(--muted);margin-bottom:2px}.learn h2 .ch-title{display:block}.learn h3{font-size:1.2rem;font-weight:600;line-height:1.5;margin:32px 0 6px}.learn h3:target,.learn p:target,.learn dt:target{animation:target-flash 2.4s ease-out;border-radius:4px}@keyframes target-flash{0%,40%{background:var(--warn-bg);box-shadow:0 0 0 6px var(--warn-bg)}to{background:transparent;box-shadow:0 0 0 6px transparent}}.toc li.appendix{list-style:none;margin-left:-1.4em}.toc-float{position:fixed;right:16px;bottom:16px;z-index:30;display:flex;flex-direction:column;align-items:flex-end;gap:8px;max-width:calc(100vw - 32px)}.toc-float[hidden]{display:none}.toc-float-btn{display:flex;align-items:baseline;gap:6px;max-width:100%;padding:8px 14px;border:1px solid var(--border);border-radius:999px;background:var(--panel);color:var(--text);box-shadow:0 2px 8px var(--shadow);font:inherit;font-size:.9rem;line-height:1.4;cursor:pointer}.toc-float-btn .num{flex:none;color:var(--muted)}.toc-float-btn .title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.toc-panel{width:min(340px,calc(100vw - 32px));max-height:min(70vh,520px);overflow:auto;padding:6px;border:1px solid var(--border);border-radius:10px;background:var(--panel);box-shadow:0 4px 16px var(--shadow)}.toc-panel[hidden]{display:none}.toc-panel ol{list-style:none;margin:0;padding:0}.toc-panel ol ol{margin:2px 0 6px 1.2em}.toc-panel a{display:flex;gap:8px;padding:6px 10px;border-radius:6px;color:var(--text);text-decoration:none;line-height:1.4;font-size:.9rem}.toc-panel ol ol a{font-size:.85rem}.toc-panel a:hover,.toc-panel a:focus-visible{background:var(--bg)}.toc-panel .num{flex:none;color:var(--muted)}.toc-panel a[aria-current]{color:var(--accent);font-weight:600}@media print{.toc-float{display:none}}.formula{background:var(--panel);border:1px solid var(--border);border-radius:6px;padding:10px 14px;overflow-x:auto}.formula .katex-display{margin:0}details.aside{margin:12px 0;border:1px solid var(--border);border-radius:6px;background:var(--panel)}details.aside>summary{padding:10px 14px;cursor:pointer;font-weight:600}details.aside[open]>summary{border-bottom:1px solid var(--border)}details.aside>:not(summary){margin-left:14px;margin-right:14px}details.aside>.formula{background:var(--bg)}details.aside>:last-child{margin-bottom:14px}@media(max-width:480px){.formula .katex{font-size:1em}}.widget{background:var(--panel);border:1px solid var(--border);border-radius:6px;padding:12px 16px;margin:24px 0}.widget .slider{display:block;margin:8px 0}.widget .slider input{display:block;width:100%;accent-color:var(--accent)}.widget output{font-weight:600;font-variant-numeric:tabular-nums}.widget .readout{font-weight:600;font-variant-numeric:tabular-nums}.chart{width:100%;height:auto;display:block}.chart .grid{stroke:var(--border);stroke-width:1}.chart .tick,.chart .axis{fill:var(--muted);font-size:13px}.chart .cash{stroke:var(--muted);stroke-width:1.5;stroke-dasharray:5 4}.chart .curve{fill:none;stroke:var(--accent);stroke-width:2}.chart .peak{fill:var(--panel);stroke:var(--accent);stroke-width:2}.chart .marker{stroke:var(--muted);stroke-width:1}.chart .dot{fill:var(--accent);stroke:var(--panel);stroke-width:2}.chart .draw{fill:var(--muted);opacity:.55}.chart .path{fill:none;stroke:var(--muted);stroke-width:1;opacity:.4}.chart .path.fresh{stroke:var(--accent);stroke-width:1.5;opacity:1}.chart .panic{fill:var(--panel);stroke:var(--warn);stroke-width:1.5;opacity:.6}.chart .panic.fresh{fill:var(--warn);stroke:var(--panel);stroke-width:2;opacity:1}.widget .buttons{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 4px}.widget button{font:inherit;font-weight:600;padding:6px 14px;border-radius:6px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-text);cursor:pointer}.widget button.secondary{background:transparent;color:var(--accent)}.widget button:disabled{opacity:.45;cursor:default}.widget .sim-lines p{margin:4px 0;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.explorer{margin:24px 0 8px}.explorer-title{font-weight:700;font-size:1.25rem;margin-bottom:10px;color:var(--text)}.explorer-q{margin:14px 0 8px}.explorer-label{display:block;font-size:.9rem;margin-bottom:4px}.seg{display:flex;flex-wrap:wrap;gap:6px}.seg button{font:inherit;font-size:.9rem;padding:4px 10px;border-radius:6px;border:1px solid var(--border);background:var(--panel);color:var(--text);cursor:pointer;font-variant-numeric:tabular-nums;white-space:nowrap}.seg button[aria-pressed=true]{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent);color:var(--accent);font-weight:600}@media(max-width:600px){.seg{display:grid;grid-template-columns:repeat(3,1fr)}}.ex-compare{margin:18px 0 6px}.ex-row{display:grid;grid-template-columns:4em 1fr;align-items:center;gap:8px;margin:6px 0}.ex-row-label{font-size:.9rem;color:var(--muted)}.mixbar{display:flex;height:22px;border-radius:4px;overflow:hidden;gap:2px}.mixbar i{display:block;height:100%;transition:width .25s ease}@media(prefers-reduced-motion:reduce){.mixbar i{transition:none}}.ex-key{list-style:none;padding:0;margin:8px 0 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(11.5em,1fr));gap:4px 16px;font-size:.9rem;font-variant-numeric:tabular-nums}.ex-key li{white-space:nowrap;margin:0}.mixbar i[hidden]{display:none}.ex-key li:before{content:"";display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:6px;background:var(--c);vertical-align:-1px}.ex-headline{font-size:1.15rem;font-weight:700;line-height:1.5;margin:18px 0 8px}.ex-stats{border-collapse:collapse;margin:0 0 6px;font-variant-numeric:tabular-nums}.ex-stats th,.ex-stats td{border:none;background:none;padding:2px 16px 2px 0;font-size:.95rem}.ex-stats th{color:var(--muted);font-weight:400;white-space:nowrap}.explorer-note{font-size:.82rem;line-height:1.6;margin:8px 0 0;padding-left:1.2em}.explorer-note li{margin:2px 0}.ex-cta{margin:14px 0 4px}:root{--cat-tw: #0072b2;--cat-equity: #d55e00;--cat-bond: #009e73;--cat-cash: #56b4e9}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--cat-tw: #4a9be0;--cat-equity: #d43c1e;--cat-bond: #338c66;--cat-cash: #09a2da}}:root[data-theme=dark]{--cat-tw: #4a9be0;--cat-equity: #d43c1e;--cat-bond: #338c66;--cat-cash: #09a2da}:root{--race-1: #0072b2;--race-2: #009e73;--race-3: #d55e00;--race-4: #e69f00}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--race-1: #4a9be0;--race-2: #338c66;--race-3: #d43c1e;--race-4: #c68624}}:root[data-theme=dark]{--race-1: #4a9be0;--race-2: #338c66;--race-3: #d43c1e;--race-4: #c68624}.chart .race-line{fill:none;stroke-width:1.75}.chart .race-1{stroke:var(--race-1)}.chart .race-2{stroke:var(--race-2)}.chart .race-3{stroke:var(--race-3);stroke-width:2.5}.chart .race-4{stroke:var(--race-4)}.race-key{list-style:none;padding:0;margin:8px 0 0;display:flex;flex-wrap:wrap;gap:4px 16px;font-variant-numeric:tabular-nums}.race-key li:before{content:"";display:inline-block;width:14px;height:3px;margin-right:6px;vertical-align:4px;background:var(--c)}.race-key .race-cash:before{background:none;border-top:2px dashed var(--muted);height:0}.race-key .race-1{--c: var(--race-1)}.race-key .race-2{--c: var(--race-2)}.race-key .race-3{--c: var(--race-3);font-weight:600}.race-key .race-4{--c: var(--race-4)}.race-table td,.race-table th{font-variant-numeric:tabular-nums;white-space:nowrap}.race-table .race-vertex td{font-weight:600}.race-table td,.race-table th{padding:6px}.chart polyline.cash{fill:none}