.back-link{font-size:var(--mantine-font-size-sm);color:var(--mantine-color-anchor);align-items:center;gap:4px;text-decoration:none;display:inline-flex}.back-link:hover{text-decoration:underline}.limits{margin:0;padding-left:20px}.diagram-layout{gap:var(--mantine-spacing-lg);grid-template-columns:minmax(0,1fr);align-items:start;display:grid}@media (width>=62em){.diagram-layout{grid-template-columns:minmax(0,1fr) 340px}.diagram-detail{top:var(--mantine-spacing-lg);position:sticky}}.narrow{max-width:1100px}.step-detail{flex-direction:column;gap:8px;margin-top:4px;display:flex}.detail-example,.detail-note{color:var(--mantine-color-dimmed);margin:0;font-size:12px;line-height:1.5}.detail-example{font-style:italic}.detail-figure{width:100%;height:auto}.detail-figure .fig-text{fill:var(--mantine-color-dimmed);font:10px system-ui,sans-serif}.detail-figure .fig-text.strong{fill:var(--mantine-color-text);font-weight:600}.detail-figure .fig-text.on-color{fill:#fff;font-weight:600}.detail-figure .fig-ground{fill:#e8dcc4}.detail-figure .fig-road{fill:none;stroke:#5c6b7a;stroke-width:4px;stroke-linecap:round;stroke-linejoin:round}.detail-figure .fig-node,.detail-key i.key-node{fill:#1a9850;stroke:#fff;stroke-width:1.5px;background:#1a9850}.detail-figure .fig-node.muted,.detail-key i.key-node.muted{fill:#b0b8c1;background:#b0b8c1}.detail-figure .fig-vertex{stroke:#fff;stroke-width:1.5px}.detail-figure .fig-cursor{fill:#fff;stroke:#1d3557;stroke-width:2.5px}.detail-figure .fig-axis{stroke:var(--mantine-color-dimmed);stroke-width:1px}.detail-figure .fig-guide{stroke:var(--mantine-color-default-border);stroke-width:1px;stroke-dasharray:3 3}.detail-figure .fig-line{fill:none;stroke:#1565c0;stroke-width:2px}.detail-figure .fig-line.bike{stroke:#e07b00}.detail-figure .fig-line.dashed{stroke:#8a96a3;stroke-dasharray:5 4}.detail-figure .fig-arc{stroke:#8a96a3;stroke-width:1.5px}.detail-figure .fig-arrow{fill:#8a96a3}.detail-key{color:var(--mantine-color-dimmed);flex-wrap:wrap;gap:4px 14px;font-size:12px;display:flex}.detail-key span{align-items:center;gap:6px;display:inline-flex}.detail-key i.key-node{border-radius:50%;width:9px;height:9px}.detail-key i.key-line{border-top:2px solid #1565c0;width:16px}.detail-key i.key-line.dashed{border-top:2px dashed #8a96a3}.detail-table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:12px}.detail-table th,.detail-table td{border-bottom:1px solid var(--mantine-color-default-border);text-align:left;padding:4px 6px}.detail-table th{color:var(--mantine-color-dimmed);font-weight:600}.detail-formula{background:var(--mantine-color-gray-0);border-radius:6px;flex-direction:column;gap:4px;padding:8px 10px;font-size:12px;display:flex}.detail-formula p{white-space:pre-wrap;margin:0;font:14px/1.5 Cambria Math,STIX Two Math,Georgia,serif}.detail-formula var{font-style:italic}.detail-formula>span{color:var(--mantine-color-dimmed)}.detail-formula dl{grid-template-columns:auto 1fr;gap:2px 10px;margin:0;display:grid}.detail-formula dl>div{display:contents}.detail-formula dt{white-space:nowrap;font:13px/1.45 Cambria Math,STIX Two Math,Georgia,serif}.detail-formula dd{color:var(--mantine-color-dimmed);margin:0;line-height:1.45}.detail-calc{background:#e7f2fc;border-radius:6px;margin:0;padding:6px 8px;font:12px/1.45 ui-monospace,SFMono-Regular,Menlo,monospace}.detail-references{flex-direction:column;gap:4px;display:flex}.sandbox{gap:var(--mantine-spacing-lg);grid-template-columns:minmax(0,1fr);align-items:start;max-width:1240px;display:grid}@media (width>=62em){.sandbox{grid-template-columns:280px minmax(0,1fr)}}.sandbox-controls{padding:var(--mantine-spacing-md);border:1px solid var(--mantine-color-default-border);border-radius:12px;flex-direction:column;gap:14px;display:flex}.sandbox-view{flex-direction:column;gap:8px;display:flex}.sandbox-canvas{border:1px solid var(--mantine-color-default-border);border-radius:12px;overflow:hidden}.sandbox-canvas canvas{cursor:crosshair;touch-action:none;width:100%;display:block}.sandbox-legend{color:var(--mantine-color-dimmed);align-items:center;gap:8px;font-size:12px;display:flex}.sandbox-legend i{border-radius:4px;width:160px;height:8px}.sandbox-figures{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:8px 24px;display:flex}.detail-figure .fig-box{fill:var(--mantine-color-gray-0);stroke:var(--mantine-color-default-border);stroke-width:1.2px}.detail-figure .fig-box.memory{fill:#fff4e5;stroke:#e0a050}.detail-figure .fig-cell-box{fill:#fff;stroke:#b0b8c1;stroke-width:1px}.detail-figure .fig-cell-box.focus{fill:#e7f2fc;stroke:#1565c0}.detail-figure .fig-vertex.plain{fill:#fff;stroke:#1d3557}.detail-figure .fig-vertex.focus{fill:#e7f2fc;stroke:#1565c0;stroke-width:2px}.detail-figure .fig-arc.focus{stroke:#1565c0;stroke-width:2.5px}.detail-figure .fig-pointer{fill:none;stroke:#1565c0;stroke-width:1px;stroke-dasharray:2 2}.detail-figure .fig-pointer-dot{fill:#1d3557}.detail-figure .fig-flow{stroke:#5c6b7a;stroke-width:1.5px}.detail-figure .fig-metro{stroke:#1a7fd4;stroke-width:5px;stroke-linecap:round}.detail-figure .fig-cut{stroke:#d7301f;stroke-width:3px;stroke-linecap:round}.detail-figure .fig-text.warn{fill:#b42318}.detail-figure .fig-bracket{fill:none;stroke:#8a96a3;stroke-width:1.2px}.detail-figure .fig-leg.walk,.detail-figure .fig-leg.link{fill:#b9c4cf}.detail-figure .fig-leg.link{opacity:.6}.detail-figure .fig-leg.wait{fill:#fff;stroke:#1a7fd4;stroke-dasharray:3 2}.detail-figure .fig-leg.ride{fill:#1a7fd4}.detail-figure .fig-leg.alight{fill:#1a7fd4;opacity:.45}.detail-figure .fig-text.small{font-size:8.5px}