/* Notebook shell; original article math and theorem styles remain available. */
:root{--paper:#f7f7f2;--ink:#243d35;--muted:#728078;--rule:#d9dfd6;--accent:#256b58;--warm:#b87b54;--serif:"Times New Roman","Songti SC","Noto Serif SC",SimSun,serif}
body.notebook-app{background:var(--paper);color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft Yahei",sans-serif;font-size:16px;margin:0;line-height:1.65}
.notebook-app *{box-sizing:border-box}.notebook-app a{color:inherit;text-decoration:none;box-shadow:none}.notebook-app button,.notebook-app input,.notebook-app select,.notebook-app textarea{font:inherit}.notebook-app button,.notebook-app select{cursor:pointer}.notebook-app button{border:1px solid var(--rule);border-radius:6px;background:transparent;color:var(--ink);padding:7px 12px}.notebook-app button:hover{background:#e8ede5}.notebook-app :focus-visible{outline:3px solid #8aad98;outline-offset:4px}.notebook-app [hidden]{display:none!important}.notebook-app h1,.notebook-app h2,.notebook-app h3{line-height:1.4;letter-spacing:-.025em;color:var(--ink)}.notebook-app p{margin:0 0 1.2em}
.skip-link{position:fixed;top:-100px;z-index:100;background:white;padding:12px}.skip-link:focus{top:10px}
.site-header{max-width:1440px;padding:27px 48px;display:flex;align-items:center;gap:50px;margin:auto;border-bottom:1px solid var(--rule)}.site-brand{font-family:var(--serif);font-size:26px;font-weight:bold;white-space:nowrap}.site-brand span{font-family:inherit;font-size:16px;font-weight:normal;color:var(--muted)}.site-header nav{display:flex;gap:30px;margin-left:auto;font-size:14px}.site-header nav a:hover,.site-header nav [aria-current]{color:var(--accent)}.site-header nav small{font-size:9px;color:var(--muted);vertical-align:super}.header-actions{display:flex;align-items:center;gap:20px;font-size:13px}.header-actions button{border:0;padding:0}.header-actions button span{font-size:22px;vertical-align:-2px}.language-link{border-left:1px solid var(--rule);padding-left:20px;font-size:12px;white-space:nowrap}
.site-main{min-height:70vh}.site-footer{max-width:1344px;margin:90px auto 0;padding:26px 0;border-top:1px solid var(--rule);display:flex;justify-content:space-between;gap:20px;font-size:12px;color:var(--muted)}.site-footer>a:first-child{font-size:16px;font-family:var(--serif);color:var(--ink)}.site-footer>a:first-child span{font-size:13px}.eyebrow{font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin:0 0 17px}.home-shell,.catalogue-shell{max-width:1248px;margin:auto;padding:0 28px}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:65px;align-items:center;padding:86px 0 78px;border-bottom:1px solid var(--rule)}.hero h1{font-size:clamp(36px,4vw,57px);font-family:var(--serif);font-weight:400;line-height:1.4;margin:0 0 25px}.hero h1 span{color:var(--accent)}.hero-intro{color:#66756c;font-size:16px;line-height:1.9}.primary-link{display:inline-flex;align-items:center;gap:45px;background:var(--ink);color:white!important;padding:13px 20px;border-radius:3px;font-size:14px;margin-top:14px}.primary-link:hover{background:var(--accent)}.hero-art{padding:15px 0 0}.hero-art svg{width:100%}.art-caption{display:block;font-size:10px;letter-spacing:.14em;color:var(--muted);text-align:right;margin-top:20px}.home-start{display:grid;grid-template-columns:1fr 1.55fr;gap:95px;padding:65px 0}.home-start h2{font-family:var(--serif);font-size:32px;font-weight:400;margin:0 0 20px}.home-start p{font-size:14px;color:var(--muted);line-height:1.85}.featured-list>a{display:block;border-bottom:1px solid var(--rule);padding:0 0 21px;margin-bottom:23px}.featured-list>a:hover h3{color:var(--accent)}.feature-label{font-size:11px;color:var(--muted)}.featured-list h3{font-family:var(--serif);font-size:23px;font-weight:400;margin:7px 0 9px}.featured-list h3 span{float:right;font-family:Inter;font-size:20px;color:var(--muted)}.featured-list p{margin:0;font-size:13px}.home-collections{display:grid;grid-template-columns:1fr 1fr;gap:28px}.home-collections>a{border:1px solid var(--rule);padding:31px;background:#f1f3eb;border-radius:3px}.home-collections h2{font-size:23px;font-family:var(--serif);font-weight:400;margin:18px 0 12px}.home-collections p{font-size:14px;color:var(--muted)}.home-collections>a>span:last-child{font-size:12px;color:var(--accent)}
.page-intro{padding:62px 0 44px;border-bottom:1px solid var(--rule)}.page-intro h1{font-family:var(--serif);font-size:43px;font-weight:400;margin:0 0 15px}.page-intro>p:last-child{color:var(--muted);font-size:15px}.catalogue-layout{display:grid;grid-template-columns:215px 1fr;gap:60px;margin-top:37px}.subject-nav{position:sticky;top:25px;align-self:start}.subject-nav>a{display:flex;justify-content:space-between;padding:10px 12px;border-radius:4px;font-size:13px}.subject-nav>a>span{font-size:11px;color:var(--muted)}.subject-nav>[aria-current="true"]{background:#e7ede2;color:var(--accent)}.nav-note{border-top:1px solid var(--rule);margin-top:25px;padding:20px 10px;font-size:11px;line-height:1.8;color:var(--muted)}.subject-group{margin-bottom:42px;scroll-margin-top:30px}.section-label{display:flex;align-items:baseline;justify-content:space-between;gap:15px;margin-bottom:20px}.section-label h2{font-size:18px;font-weight:500;margin:0}.section-label>span{font-size:11px;color:var(--muted)}.entry-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.entry-card{border:1px solid var(--rule);background:#fafbf6;padding:23px;border-radius:4px;transition:transform .16s,border-color .16s;display:flex;flex-direction:column}.entry-card:hover{border-color:#9eb7a2;transform:translateY(-2px)}.card-meta{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);letter-spacing:.12em}.entry-card h3{font-family:var(--serif);font-size:22px;font-weight:400;margin:18px 0 13px}.entry-card p{font-size:13px;color:var(--muted);line-height:1.85;flex:1}.card-bottom{border-top:1px solid var(--rule);padding-top:15px;margin-top:13px;font-size:10px;color:var(--muted)}.empty-subject{padding:18px 0;border-bottom:1px solid var(--rule);font-size:13px;color:var(--muted)}
.reader-layout{display:grid;grid-template-columns:190px minmax(0,750px) 175px;gap:45px;max-width:1320px;margin:0 auto;padding:50px 28px 0;align-items:start}.reader-nav,.entry-toc{position:sticky;top:25px;font-size:12px}.reader-nav .back-link{display:block;margin-bottom:34px;color:var(--accent)}.reader-nav>a:not(.back-link){display:block;padding:9px 8px;color:var(--muted);border-left:2px solid transparent}.reader-nav>a[aria-current]{border-color:var(--accent);background:#eaf0e6;color:var(--accent)}.entry-header{border-bottom:1px solid var(--rule);padding-bottom:30px;margin-bottom:38px}.entry-header h1{font-family:var(--serif);font-size:38px;font-weight:400;margin:10px 0 20px}.entry-deck{font-size:16px;color:var(--muted);line-height:1.9}.entry-meta{display:flex;flex-wrap:wrap;gap:17px;font-size:11px;color:var(--muted)}.period{font-size:11px;color:var(--muted);margin-top:7px!important}.entry-actions{display:flex;gap:20px;align-items:center;margin-top:24px;flex-wrap:wrap;font-size:12px}.notebook-app .primary-button{background:var(--ink);color:white;border:1px solid var(--ink);font-size:13px;padding:10px 16px}.notebook-app .primary-button:hover{background:var(--accent)}.entry-actions>button:last-child{border:0;font-size:12px}.entry-section{margin-bottom:45px;scroll-margin-top:25px}.entry-section h2{font-family:var(--serif);font-size:25px;font-weight:500;margin:0 0 23px;position:relative}.anchor-link{position:absolute;left:-20px;top:5px;font-family:Inter;font-size:15px;color:#9fad9f!important;opacity:0}.entry-section h2:hover .anchor-link,.anchor-link:focus{opacity:1}.prose{font-family:var(--serif);font-size:17px;line-height:1.95;color:#35443c;overflow-wrap:anywhere}.prose p{margin:0 0 1.3em}.prose strong{font-weight:600}.prose,.entry-deck,.flow-node,.balance-snapshot{font-variant-numeric:lining-nums}.prose td,.chart-result,.balance-snapshot{font-variant-numeric:lining-nums tabular-nums}.inline-ref{color:var(--accent)!important;border-bottom:1px dotted #83a590;padding-bottom:1px}.inline-ref:hover{background:#e6eee0}.inline-ref>span{font-family:Inter;font-size:.7em}.block-kind{font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:8px}.entry-toc{padding-top:12px}.entry-toc>a{display:block;padding:7px 0;color:var(--muted);font-size:11px;line-height:1.7}.entry-toc>a:hover{color:var(--accent)}.toc-tip{font-size:11px;color:#8b958c;border-top:1px solid var(--rule);padding-top:20px;margin-top:20px!important}
.case-group{margin:30px 0}.case-controls{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:14px}.case-tabs{display:flex;gap:7px;flex:1}.case-tabs button{font-size:11px;padding:9px}.case-tabs [aria-selected="true"],.event-tabs [aria-pressed="true"]{background:var(--ink)!important;color:white!important;border-color:var(--ink)!important}.case-controls>[data-show-cases]{font-size:10px;border:0;padding:6px 0}.mobile-case{display:none}.case-card{padding:25px 28px;background:#edf1e9;border:1px solid #d3ddcf;border-radius:5px;scroll-margin-top:30px}.case-card h3{font-family:var(--serif);font-size:23px;font-weight:500;margin:0 0 12px}.case-card .eyebrow{margin-bottom:10px}.case-date{font-family:Inter,sans-serif;font-size:10px;color:var(--muted);margin-bottom:23px!important}.case-card .prose{font-size:16px}.case-card+.case-card{margin-top:14px}.source-list p{font-size:13px}.teaching-card{background:#e7ede2;border-radius:5px;padding:30px}.teaching-card h2{font-family:var(--serif);font-size:25px;font-weight:400;margin:0 0 14px}.teaching-card p{font-size:13px;line-height:1.85}
.interactive-figure{margin:27px 0 35px;padding:24px;border:1px solid var(--rule);border-radius:5px;background:#fcfcf7;overflow:hidden}.figure-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.figure-top .eyebrow{margin:0}.figure-badge{font-size:9px;letter-spacing:.08em;border:1px solid var(--rule);padding:3px 6px;color:var(--muted)}.chart-legend{display:flex;gap:20px;font-size:11px}.chart-legend span:before{content:"";display:inline-block;width:16px;height:3px;vertical-align:middle;margin-right:8px;background:var(--accent)}.chart-legend .orange-dot:before{background:var(--warm)}.call-chart{width:100%;height:auto;margin:5px 0 10px;display:block}.chart-axis{fill:none;stroke:#b5c0b4;stroke-width:1}.chart-labels{fill:#7b877d;font-size:12px}.payoff-line,.profit-line{fill:none;stroke-width:3;stroke-linejoin:round}.payoff-line{stroke:var(--accent)}.profit-line{stroke:var(--warm)}.chart-marker{stroke:#b3b9af;stroke-dasharray:4 4}.payoff-dot{fill:var(--accent)}.profit-dot{fill:var(--warm)}.chart-controls{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.chart-controls label{font-size:11px;color:var(--muted)}.chart-controls output{float:right;color:var(--ink);font-weight:600}.chart-controls input{display:block;width:100%;accent-color:var(--accent);margin:12px 0}.chart-result{display:flex;justify-content:space-between;gap:15px;padding:18px 0 0;margin-top:16px;border-top:1px solid var(--rule);font-size:10px;color:var(--muted);flex-wrap:wrap}.chart-result strong{display:block;color:var(--ink);font-family:var(--serif);font-size:26px;font-weight:400;letter-spacing:0}.interactive-figure figcaption{font-size:11px;color:var(--muted);line-height:1.8;margin-top:20px}.diagram-description{font-size:11px;color:var(--muted);margin-top:14px}.diagram-description summary{cursor:pointer}.diagram-description p{margin-top:10px}.information-choice{display:flex;align-items:center;justify-content:space-between;gap:15px;font-size:12px;margin-bottom:18px}.information-choice select{padding:7px;background:var(--paper);color:var(--ink);border:1px solid var(--rule);border-radius:4px}.interactive-figure>p{font-size:12px}.die-faces{display:grid;grid-template-columns:repeat(6,1fr);gap:9px}.die-faces button{padding:12px 2px;border:1px solid var(--rule);background:#f3f4ed}.die-faces button span{font-size:24px;font-family:var(--serif);display:block}.die-faces button small{font-size:11px;display:block;margin-top:6px;color:var(--muted)}.die-faces button.in-cell{background:#e2edde;border-color:#abc1a8}.die-faces button[aria-pressed="true"]{outline:2px solid var(--accent);outline-offset:2px}.small-note{font-size:10px!important;color:var(--muted);margin:16px 0 0!important}.event-tabs{display:flex;gap:7px;flex-wrap:wrap}.event-tabs button{font-size:11px}.event-explanation{min-height:70px;font-size:13px!important;line-height:1.9}
.notebook-app dialog{border:1px solid var(--rule);border-radius:8px;background:var(--paper);color:var(--ink);padding:28px;width:min(760px,calc(100% - 30px));max-height:85vh;box-shadow:0 20px 100px #18382c25}.notebook-app dialog::backdrop{background:#1a302a60;backdrop-filter:blur(3px)}.dialog-top{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px}.dialog-top h2{font-family:var(--serif);font-weight:400;font-size:24px;margin:0}.dialog-top button{border:0;font-size:22px;padding:0 8px}.dialog-top .eyebrow{margin:0}.search-fields{display:flex;gap:10px}.search-fields input{flex:1;min-width:0}.search-fields input,.search-fields select{padding:12px;background:#fff;border:1px solid var(--rule);border-radius:4px;color:var(--ink)}#search-status{font-size:12px;color:var(--muted);margin:14px 0}#search-results>a{display:block;padding:18px 0;border-top:1px solid var(--rule)}#search-results strong{font-weight:500;font-family:var(--serif);font-size:20px}#search-results small{float:right;color:var(--muted);font-size:10px}#search-results p{font-size:13px;color:var(--muted);margin:7px 0 0}#teach-dialog>p{font-size:13px;color:var(--muted)}#teach-copy-text{display:block;width:100%;height:38vh;border:1px solid var(--rule);background:#fff;color:#35473b;border-radius:4px;padding:16px;resize:vertical;font-size:12px;line-height:1.8;margin:20px 0}#copy-status{font-size:12px;margin-top:12px}#reference-panel{position:fixed;right:20px;top:90px;width:410px;max-width:calc(100vw - 32px);max-height:calc(100vh - 115px);overflow:auto;border:1px solid #c2d0bd;background:#fafcf5;padding:27px;z-index:30;box-shadow:0 15px 80px #15382425;border-radius:6px}.reference-label{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.1em}#reference-panel h2{font-family:var(--serif);font-weight:500;font-size:23px;margin:12px 0 20px}#reference-panel .prose{font-size:15px;line-height:1.9}.reference-open{display:block;border-top:1px solid var(--rule);padding-top:18px;margin-top:20px;font-size:12px;color:var(--accent)!important}
.legacy-page .site-main{max-width:1000px;margin:45px auto;padding:0 30px}.legacy-page .post-content{color:#35443c}.legacy-page .post-title{font-family:var(--serif)}.legacy-page .ou-section-landing{max-width:100%}.legacy-page .post-single{background:transparent}
@media(min-width:1500px){.reader-layout{gap:60px;max-width:1420px;grid-template-columns:205px minmax(0,780px) 190px}}
@media(max-width:1100px){.site-header{padding:24px 28px;gap:25px}.site-header nav{gap:22px}.reader-layout{grid-template-columns:160px minmax(0,740px);gap:35px}.entry-toc{display:none}.hero{gap:30px}.home-start{gap:55px}.site-footer{margin-left:28px;margin-right:28px}}
@media(max-width:760px){.site-header{flex-wrap:wrap;gap:14px;padding:18px 22px}.site-brand{font-size:23px}.site-brand span{font-size:13px}.header-actions{margin-left:auto;gap:14px}.site-header nav{order:3;width:100%;margin-left:0;gap:25px;font-size:12px}.language-link{padding-left:12px}.home-shell,.catalogue-shell{padding:0 22px}.hero{padding:42px 0;grid-template-columns:1fr;gap:16px}.hero h1{font-size:38px}.hero-intro{font-size:14px}.hero-art{max-width:320px;justify-self:end;width:85%;margin-top:-8px}.art-caption{margin-top:0;font-size:8px}.home-start{grid-template-columns:1fr;gap:30px;padding:40px 0 25px}.home-start h2{font-size:28px}.home-start h2 br{display:none}.featured-list h3{font-size:22px}.home-collections{grid-template-columns:1fr;gap:16px}.site-footer{margin:55px 22px 0;flex-wrap:wrap;padding:24px 0;font-size:10px}.page-intro{padding:38px 0 25px}.page-intro h1{font-size:33px}.catalogue-layout{grid-template-columns:1fr;gap:25px;margin-top:22px}.subject-nav{position:static;display:flex;flex-wrap:wrap;gap:6px}.subject-nav>a{font-size:11px;padding:6px 9px;border:1px solid var(--rule);gap:10px}.subject-nav .nav-note{display:none}.entry-grid{grid-template-columns:1fr}.section-label{display:block}.section-label>span{display:block;margin-top:5px}.reader-layout{display:block;padding:28px 22px 0}.reader-nav{position:static}.reader-nav .subject-tree{margin-bottom:27px}.reader-nav .back-link{margin-bottom:27px}.entry-header h1{font-size:31px}.entry-deck{font-size:15px}.entry-header{padding-bottom:24px}.entry-actions{gap:14px;font-size:11px}.entry-actions .primary-button{font-size:12px}.entry-section h2{font-size:23px}.prose{font-size:16px;line-height:1.95}.interactive-figure{padding:16px;margin-left:-3px;margin-right:-3px}.chart-controls{gap:12px}.chart-controls label{font-size:10px}.chart-result strong{font-size:22px}.case-tabs{display:none}.mobile-case{display:flex;align-items:center;gap:10px;flex:1;font-size:11px}.mobile-case select{min-width:0;max-width:240px;width:100%;padding:8px;background:var(--paper);border:1px solid var(--rule);border-radius:3px;font-size:11px;color:var(--ink)}.case-card{padding:21px 18px}.case-card h3{font-size:21px}.case-card .prose{font-size:15px}.case-controls{gap:7px}.teaching-card{padding:24px}.teaching-card h2{font-size:24px}.die-faces{gap:5px}.die-faces button span{font-size:20px}.information-choice{font-size:11px}.information-choice select{font-size:11px}#reference-panel{top:auto;bottom:0;right:0;width:100%;max-width:100%;max-height:82vh;border-radius:14px 14px 0 0;padding:24px;box-shadow:0 -30px 100px #15382445}.legacy-page .site-main{padding:0 22px;margin-top:30px}.search-fields select{max-width:100px;font-size:12px}}
.path-shell{max-width:880px;margin:48px auto 0;padding:0 28px}.path-shell>.back-link{font-size:12px;color:var(--accent)}.path-shell .page-intro{padding-top:30px}.path-intro{padding:28px 0 40px;color:var(--muted);font-size:16px;line-height:1.9}.reading-steps{padding:0;list-style:none;margin:15px 0 40px}.reading-steps>li{display:grid;grid-template-columns:56px 1fr;gap:25px;padding-bottom:44px;position:relative}.reading-steps>li:not(:last-child):before{content:"";position:absolute;left:23px;top:47px;bottom:0;border-left:1px solid var(--rule)}.step-number{width:47px;height:47px;border:1px solid #b9cbb3;border-radius:50%;display:grid;place-items:center;font-family:var(--serif);font-size:20px;background:#e8eee1}.reading-steps h2{font-family:var(--serif);font-size:26px;font-weight:400;margin:8px 0 14px}.step-question{font-size:15px}.step-transition{font-size:13px;color:var(--muted);line-height:1.9}.path-branches{display:flex;gap:15px;flex-wrap:wrap;font-size:12px;padding:15px;background:#ecf1e6}.path-branches>span{width:100%;font-size:10px;color:var(--muted)}.path-branches>a{color:var(--accent)}.path-end{border-top:1px solid var(--rule);padding-top:28px}.path-end h2{font-family:var(--serif);font-size:25px;font-weight:400}.path-end p{font-size:14px;color:var(--muted)}.path-end>a{font-size:13px;color:var(--accent)}.catalogue-path{display:flex;align-items:center;justify-content:space-between;gap:25px;padding:28px 32px;background:#eaf0e3;border:1px solid #d0dcc9;border-radius:5px;margin-top:30px}.catalogue-path .eyebrow{margin-bottom:9px}.catalogue-path h2{font-family:var(--serif);font-size:26px;font-weight:400;margin:0 0 9px}.catalogue-path p:last-child{font-size:12px;color:var(--muted);margin:0}.catalogue-path .primary-link{margin:0;white-space:nowrap}.path-position{display:block;padding:16px 20px;background:#edf2e7;border-left:3px solid #92af85;font-size:10px;color:var(--muted)!important;margin-bottom:35px}.path-position>span{display:block;font-size:13px;color:var(--ink);margin-top:6px}.path-navigation{margin:45px 0;padding:28px;border:1px solid #c4d3ba;border-radius:5px;background:#edf2e7}.path-overview{font-size:13px;color:var(--accent)!important;display:block}.path-overview>span{display:block;font-size:10px;color:var(--muted);margin-bottom:6px}.path-connection{font-size:14px;line-height:1.9;margin-top:22px!important}.path-next{display:block;background:var(--ink);padding:18px 22px;border-radius:4px;color:white!important;position:relative}.path-next>small{display:block;color:#b9cabb;font-size:10px;margin-bottom:6px}.path-next>strong{display:block;font-size:17px;font-family:var(--serif);font-weight:400;padding-right:20px}.path-next>span{position:absolute;right:20px;top:36%;font-size:20px}.path-previous{display:block;margin-top:18px;font-size:11px;color:var(--muted)!important}.path-branch-return{background:#edf2e7;border-left:3px solid #92af85;padding:22px;margin-bottom:30px;font-size:13px}.path-branch-return>p{color:var(--muted);font-size:11px}.path-branch-return>a{color:var(--accent)}
@media(max-width:760px){.catalogue-path{display:block;padding:23px}.catalogue-path h2{font-size:24px}.catalogue-path .primary-link{margin-top:18px;font-size:12px}.path-shell{padding:0 22px;margin-top:30px}.path-shell .page-intro h1{font-size:30px}.reading-steps>li{grid-template-columns:38px 1fr;gap:17px}.step-number{width:37px;height:37px;font-size:16px}.reading-steps>li:not(:last-child):before{left:18px;top:37px}.reading-steps h2{font-size:23px}.path-navigation{padding:23px}.path-next>strong{font-size:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.site-header,.site-footer,.reader-nav,.entry-toc,.entry-actions,.case-controls,.teaching-card,.anchor-link,.event-tabs,.chart-controls,.information-choice,.diagram-description,dialog,#reference-panel,.skip-link{display:none!important}.notebook-app{background:white!important;color:#111!important}.reader-layout{display:block;max-width:100%;padding:0}.entry-article{max-width:100%}.case-card[hidden]{display:block!important}.case-card{break-inside:avoid;background:white;border:1px solid #aaa}.prose{font-size:11pt}.entry-header h1{font-size:26pt}.entry-section h2{font-size:18pt}.interactive-figure{break-inside:avoid}.call-chart{max-height:240px}.entry-section{margin-bottom:25px}.inline-ref{border-bottom:0}.inline-ref:after{content:" (" attr(href) ")";font:8pt sans-serif;overflow-wrap:anywhere}.interactive-figure figcaption{color:#333}.notebook-app .site-main{max-width:none;margin:0;padding:0}}

/* Expand only the subjects that already contain entries. */
.catalogue-accordion{margin-top:32px}.catalogue-accordion .subject-group{margin:0;border-bottom:1px solid var(--rule)}.subject-group>summary{display:flex;gap:16px;align-items:center;padding:24px 0;cursor:pointer;list-style:none}.subject-group>summary:before{content:'+';font-size:24px;color:var(--accent);width:24px;flex-shrink:0}.subject-group[open]>summary:before{content:'−'}.subject-group summary strong{font:24px var(--serif);display:block}.subject-group summary small{display:block;color:var(--muted);font-size:12px;margin-top:8px}.subject-count{margin-left:auto;color:var(--muted);font-size:13px}.subject-group .entry-grid{padding:0 0 28px}.subject-tree summary{cursor:pointer;padding:10px 0}.subject-tree>summary{font-size:13px;font-weight:600;border-bottom:1px solid var(--rule)}.subject-branch{border-bottom:1px solid var(--rule)}.subject-branch summary small{color:var(--muted);margin-left:6px}.subject-branch a{display:block;padding:8px 10px;margin:3px 0;color:var(--muted);line-height:1.7}.subject-branch a[aria-current]{background:#e7ede2;color:var(--accent);border-left:2px solid var(--accent)}
/* Account transmission: a labelled edge connects every consecutive node. */
.flow-paths{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:18px;margin:24px 0}.flow-path{min-width:0}.flow-label{font-size:12px;font-weight:600;text-align:center}.flow-path ol{list-style:none;margin:0;padding:0}.flow-path li{margin:0}.flow-node{border:1px solid #aac0ac;border-radius:6px;background:#eaf1e4;padding:14px 10px;text-align:center}.flow-node strong{display:block;font-size:14px;font-weight:600}.flow-node small{display:block;font-size:11px;line-height:1.7;color:#617468;margin-top:5px}.flow-edge{display:flex;flex-direction:column;align-items:center;min-height:65px;justify-content:center;padding:5px 0}.flow-edge span{font-size:11px;text-align:center;line-height:1.6}.flow-edge svg{width:18px;height:27px;flex-shrink:0}.flow-edge path{fill:none;stroke:var(--accent);stroke-width:1.8}.event-panel h3{font-size:16px;margin:24px 0 0}.balance-snapshot{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:8px;align-items:start;border-top:1px solid var(--rule);padding-top:18px}.balance-snapshot strong{font-size:16px;display:block}.balance-snapshot span{font-size:11px;display:block;color:var(--muted);margin-top:8px}.prose table{border-collapse:collapse;width:100%;font-family:inherit;font-size:14px;margin:25px 0;line-height:1.7}.prose th,.prose td{padding:12px 10px;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}.prose th{background:#eaf0e3;font-weight:600}.prose details{margin:20px 0;padding:16px 20px;border-left:3px solid #a7bda0;background:#eef2e8}.prose summary{cursor:pointer;font-size:15px;font-weight:600}.prose details p{margin-top:14px}.read-time{color:var(--accent)}
@media(max-width:760px){.subject-group summary strong{font-size:21px}.flow-paths{gap:12px;grid-template-columns:repeat(auto-fit,minmax(130px,1fr))}.flow-node strong{font-size:13px}.balance-snapshot{grid-template-columns:1fr}.balance-snapshot>b{display:none}.balance-snapshot>div{display:flex;gap:12px;align-items:baseline}.balance-snapshot span{margin:0}.prose th,.prose td{padding:9px 6px;font-size:12px}}
@media print{.event-panel[hidden]{display:block!important}.event-panel{break-inside:avoid;margin-bottom:25px}.flow-paths{grid-template-columns:repeat(2,1fr)}}

.learning-check{border-left:3px solid #a7bda0;padding:18px 22px;background:#edf2e7;margin:24px 0}.learning-check>p{font:16px/1.9 var(--serif)}.learning-check summary{font-size:12px;cursor:pointer;color:var(--accent)}.learning-check .prose{font-size:15px;margin-top:18px}

/* Full Markdown entries, domain routes and independent company records. */
.entry-body{margin-bottom:42px;min-width:0}
.entry-body h2{font:500 26px/1.5 var(--serif);margin:2.25em 0 1em;scroll-margin-top:28px}
.entry-body h3{font:600 20px/1.55 var(--serif);margin:1.8em 0 .8em;scroll-margin-top:28px}
.entry-body h4{font-size:17px;margin:1.6em 0 .7em}
.entry-body ul,.entry-body ol{padding-left:1.5em;margin:1.1em 0 1.4em}
.entry-body li{margin:.45em 0}
.entry-body blockquote{border-left:3px solid #a7bda0;padding:4px 18px;margin:24px 0;color:#52695b}
.entry-body a:not(.footnote-backref),.graph-relations a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.entry-body pre{overflow-x:auto;padding:18px;background:#eef1e9;border-radius:5px;font-size:13px;line-height:1.75}
.entry-body code{font-size:.88em;overflow-wrap:anywhere}
.entry-body pre code{overflow-wrap:normal;white-space:pre}
.entry-body .footnotes{font-size:14px;line-height:1.85;margin-top:40px;border-top:1px solid var(--rule);padding-top:20px}
.entry-body .footnotes p{margin:.6em 0}
.entry-body .footnotes li{scroll-margin-top:28px}
.prose th{font-variant-numeric:lining-nums tabular-nums}
.prose [align="right"]{text-align:right}
.prose [align="center"]{text-align:center}
.notebook-table-scroll{max-width:100%;overflow-x:auto;margin:24px 0;overscroll-behavior-x:contain}
.notebook-table-scroll>table{margin:0;min-width:420px}
.entry-toc nav ul{list-style:none;padding:0;margin:0}
.entry-toc nav li{margin:0}
.entry-toc nav ul ul{padding-left:11px}
.entry-toc nav a{display:block;padding:7px 0;color:var(--muted);font-size:11px;line-height:1.7}
.entry-toc nav a:hover{color:var(--accent)}
.anchor-alias{display:none;scroll-margin-top:28px}
.anchor-alias:target{display:block}
.anchor-alias.is-resolved{display:block;height:0;overflow:hidden}
.subject-content{padding:0 0 25px 40px}
.topic-group{border-top:1px solid var(--rule);margin-top:18px}
.subject-group .topic-group>summary{display:list-item;list-style:disclosure-closed;padding:16px 0;font-size:16px;font-weight:500}
.subject-group .topic-group[open]>summary{list-style:disclosure-open}
.subject-group .topic-group>summary:before{content:none}
.topic-group>summary small{display:inline;font-family:Inter,sans-serif;font-size:11px;margin-left:9px;color:var(--muted)}
.topic-group .entry-grid{padding:0 0 12px}
.topic-branch{padding-left:12px}
.topic-branch>summary{font-size:11px;color:var(--muted);line-height:1.6}
.subject-branch .tree-route,.tree-companies{font-weight:600;color:var(--accent);font-size:11px}
.tree-companies{display:block;border-top:1px solid var(--rule);padding:18px 0}
.domain-route,.company-library-link{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:20px 23px;border:1px solid var(--rule);border-radius:5px;background:#edf2e7;margin:18px 0 25px}
.domain-route>span:first-child,.company-library-link>span:first-child{display:flex;flex-direction:column;gap:6px}
.domain-route strong,.company-library-link strong{font:500 20px/1.55 var(--serif)}
.domain-route small,.company-library-link small{color:var(--muted);font-size:12px;line-height:1.8}
.company-catalogue{padding-top:35px}
.company-catalogue .page-intro{padding-top:28px}
.company-filter{margin:28px 0}
.company-filter label{display:block;font-size:13px;margin-bottom:9px}
.company-filter input{width:100%;max-width:600px;padding:11px 14px;border:1px solid var(--rule);border-radius:4px;background:#fcfcf7;color:var(--ink)}
.company-filter p{font-size:12px;color:var(--muted);margin-top:9px}
.company-return{margin:30px 0;font-size:13px;color:var(--accent)}
.experiment-embed{border:1px solid var(--rule);border-radius:5px;margin:20px 0;background:#fcfcf7}
.experiment-embed>summary{cursor:pointer;padding:18px 20px;font:500 19px/1.55 var(--serif)}
.experiment-links{padding:0 20px 15px;display:flex;gap:16px;flex-wrap:wrap;font-size:12px;color:var(--accent)}
.experiment-frame{display:block;width:100%;height:720px;max-height:85vh;border:0;border-top:1px solid var(--rule);background:white}
.experiment-frame.is-fitted{max-height:none}
.experiment-slot:empty{display:none}.experiment-slot{margin:26px 0}.experiment-slot .experiment-embed{margin:0}.experiment-slot>details>summary{list-style:revert}
.reading-branch-controls{display:flex;align-items:center;gap:9px;flex-wrap:wrap;padding:17px 18px;margin:25px 0;background:#eef3eb;border:1px solid var(--rule);border-radius:5px}
.reading-branch-controls>span{font-size:13px;color:var(--muted);margin-right:6px}.reading-branch-controls button{font:500 13px/1.5 system-ui,"Microsoft YaHei",sans-serif;padding:8px 12px;border:1px solid var(--rule);border-radius:4px;background:#fffef9;cursor:pointer;color:var(--ink)}
.reading-branch-controls button[aria-pressed="true"]{background:var(--ink);border-color:var(--ink);color:#fffef9}.reading-branch-controls button:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.reference-meta{font-size:12px;line-height:1.8;color:var(--muted)}
.knowledge-graph{border-top:1px solid var(--rule);padding-top:32px;margin-top:38px}
.graph-intro,.graph-view-status{font-size:12px;color:var(--muted);line-height:1.85}
.graph-controls{display:flex;flex-wrap:wrap;gap:7px;margin:18px 0}
.graph-controls button{font-size:11px}
.graph-controls button[aria-pressed="true"]{background:var(--ink);color:white;border-color:var(--ink)}
.knowledge-graph-visual{width:100%;border:1px solid var(--rule);border-radius:5px;background:#fafbf6;overflow:hidden}
.knowledge-graph-visual svg{display:block;width:100%;height:auto}
.graph-connection{stroke:#9aac9c;stroke-width:1.4;fill:none}
.graph-arrow{fill:#718d78}
.graph-node rect{fill:#eef3e9;stroke:#b7c6b1;stroke-width:1.2}
.graph-node text{fill:var(--ink);font:15px/1.4 Inter,"Microsoft YaHei",sans-serif}
.graph-node.is-current rect{fill:#dce9d6;stroke:var(--accent);stroke-width:1.8}
.graph-node:hover rect,.graph-node:focus rect{stroke:var(--accent);stroke-width:2.3}
.graph-edge-label{fill:#506856;font:12px Inter,"Microsoft YaHei",sans-serif}
.graph-relations>summary{font-size:13px;cursor:pointer;margin:18px 0}
.graph-relations ul{list-style:none;padding:0;margin:0}
.graph-relations li{border-top:1px solid var(--rule);padding:14px 0;font-size:13px}
.graph-relation-line{display:flex;gap:5px;flex-wrap:wrap;align-items:baseline}
.relation-label{color:var(--muted);font-size:11px}
.graph-relations p{margin:7px 0 0;font-size:12px;line-height:1.8}
.graph-relations small,.relation-scope{color:var(--muted)}
@media(max-width:760px){
  .entry-body h2{font-size:23px}.entry-body h3{font-size:19px}
  .subject-content{padding-left:0}
  .domain-route,.company-library-link{padding:17px;gap:15px}
  .domain-route strong,.company-library-link strong{font-size:18px}
  .experiment-frame{height:650px}
  .knowledge-graph-visual{display:none}
  .graph-relations{margin-top:15px}
  .notebook-table-scroll>table{font-size:13px}
}
@media print{
  .entry-experiments,.experiment-slot,.experiment-embed,.reading-branch-controls,.graph-controls,.knowledge-graph-visual,.graph-view-status,.anchor-aliases,.anchor-alias{display:none!important}
  [data-reading-branch][hidden]{display:block!important}
  .entry-body h2{font-size:18pt;break-after:avoid}.entry-body h3{font-size:14pt;break-after:avoid}
  .entry-body .footnotes{font-size:9pt}
  .notebook-table-scroll{overflow:visible}.notebook-table-scroll>table{min-width:0;font-size:9pt}
  .entry-body pre{white-space:pre-wrap;overflow:visible}
  .graph-relations li[hidden]{display:block!important}
  .graph-relations summary{display:none}
}