.ledger-interactive{min-width:0;position:relative}.ledger-map-heading{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 24px;padding-bottom:14px;display:flex}.ledger-map-heading span{font:500 12px/1.3 var(--font-mono);color:var(--text)}.ledger-map-heading b{font:500 12px/1.3 var(--font-mono);color:var(--text-muted)}.ledger-unit-map{width:100%;display:block;overflow:visible}.ledger-unit{stroke-width:1px;transition:opacity var(--duration-2) var(--ease-trace)}.unit-proven{fill:var(--accent);stroke:var(--accent)}.unit-runtime{fill:var(--bg-elevated);stroke:var(--text-muted);stroke-dasharray:2.5 2}.unit-unresolved{fill:var(--danger);stroke:var(--danger)}.unit-bounded{color:var(--text-muted);stroke:var(--text-muted)}.ledger-unit[data-emphasized=false]{opacity:.14}.ledger-map-baseline{fill:none;stroke:var(--border-subtle);stroke-width:1px}.ledger-category-controls{grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin-top:16px;display:grid}.ledger-category-controls button{text-align:left;cursor:pointer;align-content:start;gap:4px;min-height:0;padding:10px 12px;display:grid}.ledger-category-controls strong{font:550 22px/1 var(--font-display);letter-spacing:-.03em;color:var(--text);display:block}.ledger-category-controls button[aria-pressed=true] strong{color:var(--accent-strong)}.ledger-category-controls span{font-size:12px;line-height:1.35;display:block}.ledger-selected-note{max-width:56ch;min-height:118px;animation:ledger-caption var(--duration-2) var(--ease-trace) both;margin:22px 0 0}.ledger-selected-note h3{font:550 clamp(19px, 1.8vw, 22px) / 1.2 var(--font-display);letter-spacing:-.025em;margin:0 0 8px}.ledger-selected-note p{color:var(--text-muted);margin:0;font-size:15px;line-height:1.6}.ledger-interactive>.sample-note{border-top:1px solid var(--border-subtle);margin-top:16px;padding-top:12px;font-size:12px}@keyframes ledger-caption{0%{transform:translate(6px)}to{transform:translate(0)}}@media (max-width:700px){.ledger-category-controls{grid-template-columns:repeat(2,minmax(0,1fr))}.ledger-category-controls button:first-child{grid-column:1/-1}.ledger-selected-note{min-height:150px}}@media (prefers-reduced-motion:reduce){.ledger-unit{transition:none}.ledger-selected-note{animation:none}}.reading-spread{grid-template-columns:repeat(12,minmax(0,1fr));gap:0 28px;padding-top:48px;padding-bottom:72px;display:grid}.reading-intro{grid-column:1/11;max-width:820px;padding-bottom:44px}.reading-intro h1{max-width:20ch;margin:0 0 20px;font-size:clamp(40px,4.4vw,68px);line-height:1.04}.reading-intro>.site-breadcrumb+h1{margin-top:12px}.reading-intro>p{max-width:62ch;margin:0;font-size:18px;line-height:1.6}.reading-intro>p+p{margin-top:14px}.reading-intro>.reading-byline{max-width:none;color:var(--text-muted);margin:-4px 0 22px;font-size:13px;line-height:1.6}.reading-intro>.reading-byline+p{margin-top:0}.reading-visual{grid-column:1/-1;padding-block:36px 44px;position:relative}.reading-rule{grid-column:1/-1;height:0;margin-bottom:44px;position:relative}.reading-visual:before,.reading-visual:after,.reading-rule:before{content:"";left:calc(-6px - var(--rule-outset,0px));right:calc(-6px - var(--rule-outset,0px));background:linear-gradient(var(--text), var(--text)) left 5px top 0 / 1px 11px no-repeat, linear-gradient(var(--text), var(--text)) left 0 top 5px / 11px 1px no-repeat, linear-gradient(var(--text), var(--text)) right 5px top 0 / 1px 11px no-repeat, linear-gradient(var(--text), var(--text)) right 0 top 5px / 11px 1px no-repeat, linear-gradient(var(--border-subtle), var(--border-subtle)) left 0 top 5px / 100% 1px no-repeat;pointer-events:none;height:11px;position:absolute}.reading-visual:before,.reading-rule:before{top:-5px}.reading-visual:after{bottom:-6px}.reading-visual>.kit-drawing-label{color:var(--text-muted);margin:0}.reading-visual-card{padding:clamp(16px,2.4vw,28px)}.reading-rail{grid-area:3/1/auto/4;align-self:start;margin-top:48px;position:sticky;top:104px}.reading-rail-label{color:var(--text);margin:0 0 10px;font-size:13px;font-weight:500;line-height:1.4}.reading-rail nav{margin:0 0 22px;display:grid}.reading-rail nav a{border-left:1px solid var(--border-subtle);min-height:44px;color:var(--text-muted);align-items:center;padding:8px 0 8px 14px;font-size:14px;line-height:1.4;transition:color .18s,border-color .18s;display:flex}.reading-rail nav a:hover,.reading-rail nav a:focus-visible{border-left-color:var(--accent);color:var(--text)}.reading-rail>.text-link{gap:6px;font-size:14px}@media (max-width:1280px) and (min-width:901px){.reading-rail>.text-link{line-height:1.6;display:inline}.reading-rail>.text-link>svg{vertical-align:-2px;margin-left:6px}}.reading-body{grid-area:3/5/auto/13;min-width:0;max-width:700px;margin-top:48px}.reading-body>section{border-top:1px solid var(--border-subtle);padding:32px 0 36px;scroll-margin-top:100px;position:relative}.reading-body>section:first-child{border-top:0;padding-top:0}.reading-body>section:last-child{padding-bottom:0}.reading-body h2{margin:0 0 18px;font-size:clamp(24px,2.4vw,30px);line-height:1.15}.reading-body>section>h3{letter-spacing:-.02em;margin:30px 0 8px;font-size:19px;font-weight:600;line-height:1.3}.reading-body>section>h2+h3{margin-top:0}.reading-body>section>p,.reading-body>section>:is(ul,ol)>li{color:var(--text-muted);font-size:17px;line-height:1.7}.reading-body>section>:is(p,ul,ol) strong{color:var(--text);font-weight:600}.reading-body>section>:is(p,ul,ol):not(:last-child){margin-bottom:18px}.reading-body>section>p{margin-top:0}.reading-body>section>ul,.reading-body>section>ol{gap:10px;margin-top:0;padding:0;list-style:none;display:grid}.reading-body>section>ul>li,.reading-body>section>ol>li{padding-left:28px;position:relative}.reading-body>section>ul>li:before{content:"";background:linear-gradient(var(--accent), var(--accent)) center / 9px 1px no-repeat, linear-gradient(var(--accent), var(--accent)) center / 1px 9px no-repeat;width:9px;height:9px;position:absolute;top:.85em;left:2px;translate:0 -50%}.reading-body>section>ol>li:before{content:"";background:var(--accent);border-radius:50%;width:7px;height:7px;position:absolute;top:.85em;left:3px;translate:0 -50%}.reading-body>section>ol>li:not(:last-child):after{content:"";background:var(--border-subtle);width:1px;position:absolute;top:calc(.85em + 8px);bottom:calc(-.85em - 2px);left:6px}.reading-body>section>:is(p,ul,ol) a:not(.button,.text-link),.reading-table a,.reading-intro>p a{color:var(--accent);text-underline-offset:4px;text-decoration:underline;text-decoration-thickness:1px;transition:color .18s}.reading-body>section>:is(p,ul,ol) a:not(.button,.text-link):hover,.reading-table a:hover,.reading-intro>p a:hover{color:var(--accent-strong)}.reading-body p .prose-link,.reading-body li .prose-link{padding-block:12px}.reading-body>section>.button-row{margin-top:28px}.reading-body>section>.text-link{margin-top:6px}.reading-body .article-figure{margin:10px 0 28px}.reading-body .article-figure>.kit-drawing-frame{padding:14px}.reading-body .article-figure img,.reading-body .article-figure video{border:1px solid var(--border-subtle);background:var(--bg-elevated);border-radius:4px;width:100%;height:auto;display:block}.reading-body .article-figure figcaption{padding-inline:14px;font-size:14px;line-height:1.55}@media (max-width:1099px){.reading-body .article-figure{max-width:min(460px,100%)}}.reading-table-scroll{border:1px solid var(--border-subtle);border-radius:var(--radius-card);background:var(--bg-elevated);max-width:100%;margin:10px 0 28px;padding:0 20px 4px;overflow-x:auto}.reading-table{table-layout:fixed;border-collapse:collapse;width:100%;font-size:14.5px}.reading-table caption{text-align:left;color:var(--text);padding:16px 0 12px;font-size:14px;font-weight:600;line-height:1.4}.reading-table th,.reading-table td{border-top:1px solid var(--border-subtle);text-align:left;vertical-align:top;padding:12px 14px 12px 0;line-height:1.55}.reading-table thead th{color:var(--text-muted);padding-block:10px;font-size:13px;font-weight:500;line-height:1.4}.reading-table thead th:first-child{width:22%}.reading-table tbody th{color:var(--text);font-weight:600}.reading-table td{color:var(--text-muted)}@media (max-width:900px){.reading-rail{grid-area:3/1/auto/-1;position:static}.reading-rail nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:0 20px}.reading-body{border-top:1px solid var(--border-subtle);grid-area:4/1/auto/-1;max-width:none;margin-top:32px;padding-top:32px}}@media (max-width:760px){.reading-spread{column-gap:16px;padding-top:28px;padding-bottom:48px}.reading-intro{grid-column:1/-1;padding-bottom:32px}.reading-intro h1{margin-bottom:14px;font-size:clamp(34px,9.4vw,44px)}.reading-intro>p{font-size:17px}.reading-visual{padding-block:28px 32px}.reading-rule{margin-bottom:0}.reading-visual .kit-drawing-frame{padding:10px}.reading-visual-card{padding:12px}.reading-rail{margin-top:32px}.reading-rail nav{grid-template-columns:minmax(0,1fr)}.reading-body>section>p,.reading-body>section>:is(ul,ol)>li{font-size:16px}.reading-body>section{padding-block:28px 30px}.reading-table-scroll{padding-inline:16px}.reading-table thead{display:none}.reading-table,.reading-table caption,.reading-table tbody,.reading-table tr,.reading-table th,.reading-table td{display:block}.reading-table tbody th{padding:14px 0 6px}.reading-table tbody td{border-top:0;padding:0 0 12px}.reading-table tbody td:before{content:attr(data-label);color:var(--text-muted);margin-bottom:2px;font-size:12.5px;font-weight:500;line-height:1.5;display:block}}.reading-body .article-interactive{margin:10px 0 28px}.reading-body .article-interactive>.kit-drawing-frame{padding:14px}