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/* Keep this page's typography independent of legacy editorial headings. */
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#sf-show-more{display:block;margin:24px auto;min-width:220px}.sf-journey{position:relative} .sf textarea:focus-visible{outline:3px solid #5087f2;outline-offset:3px}
/* Body navigation and explicit form sizing, isolated from shared form rules. */
.sf-body{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:32px;padding:28px;background:var(--sf-surface);border:1px solid var(--sf-line);border-radius:20px;margin-bottom:20px}.sf-body-copy p{color:var(--sf-muted);line-height:1.65}.sf-body-choices{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:20px 0}.sf-body-choices button{text-align:left;font-size:14px;line-height:1.4}.sf-body-figure{display:flex;flex-direction:column;align-items:center;justify-content:center;background:var(--sf-soft);border-radius:18px;padding:12px}.sf-body-figure svg{display:block;width:100%;max-width:240px;height:auto}.sf-body-figure>span{font-size:12px;color:var(--sf-muted);text-align:center}.sf-body-hotspot{cursor:pointer;outline:none}.sf-body-hotspot rect{fill:#fff;stroke:#7e9bd0;stroke-width:1.5}.sf-body-hotspot text{fill:#173d80;font:600 12px system-ui;text-anchor:middle;pointer-events:none}.sf-body-hotspot:hover rect{fill:#dbeafe;stroke:#1d4ed8}.sf-body-hotspot[aria-pressed=true] rect{fill:#1d4ed8;stroke:#1d4ed8}.sf-body-hotspot[aria-pressed=true] text{fill:#fff}.sf-body-hotspot:focus-visible rect{stroke:#10254b;stroke-width:4}.sf #sf-body-status{font-size:14px;min-height:44px}.sf-body-copy>a{display:inline-flex;min-height:44px;align-items:center;font-weight:650}.sf .sf-prep-grid label{display:block;min-width:0;line-height:1.5}.sf .sf-questions input[type=checkbox]{appearance:auto;display:inline-block;width:20px;height:20px;min-width:20px;min-height:20px;max-width:20px;max-height:20px;padding:0;margin:0;flex:0 0 20px;border-radius:3px}.sf .sf-questions label{justify-content:flex-start;line-height:1.5;padding:6px 0}.sf .sf-workspace{overflow-wrap:anywhere}.sf textarea{max-width:100%}
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/* Interactive explorer: self-contained illustration, no image or 3D library downloads. */
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@media(max-width:650px){.sf .sx{padding:18px}.sx-heading{display:block;margin-bottom:18px}.sf .sx-heading h2{font-size:25px}.sx-heading p{font-size:14px}.sx-stage{grid-template-columns:1fr;gap:16px}.sx-map{padding:12px}.sx-map svg{height:340px;max-width:230px}.sx-panel{padding:0}.sf .sx-panel h3{font-size:23px}.sx-topic>a{font-size:15px}.sx-categories{gap:6px;margin-top:18px}.sf .sx-categories button{font-size:12px}.sx-map-note{font-size:10px}}
@media(prefers-reduced-motion:reduce){.sx-spot>circle:first-child{transition:none}}

.sx-label{display:none;font:600 10px system-ui,sans-serif;fill:#14243e;paint-order:stroke;stroke:#fff;stroke-width:3px;pointer-events:none}.sx-spot:hover .sx-label,.sx-spot:focus-visible .sx-label{display:block}.sx-spot:focus-visible{outline:2px dashed #14243e;outline-offset:3px}.sx-spot[aria-pressed=true]>circle:first-child{stroke:#102c65;stroke-width:4px}

/* Topic exploration remains in-page; only the optional source opens elsewhere. */
.sf .sf-topic-dialog{box-sizing:border-box;width:min(720px,calc(100% - 32px));max-width:720px;max-height:calc(100vh - 32px);max-height:calc(100dvh - 32px);padding:0;border:1px solid var(--sf-line);border-radius:22px;background:var(--sf-surface);color:var(--sf-ink);overflow-y:auto;overscroll-behavior:contain;box-shadow:0 24px 70px #10254b40}
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@media(max-width:650px){.sf .sf-topic-dialog{width:calc(100% - 16px);max-height:calc(100dvh - 16px);border-radius:18px}.sf-topic-header{padding:12px 16px}.sf-topic-content{padding:18px}.sf-topic-content h2{font-size:26px}.sf-topic-actions>*{width:100%}.sf-topic-header .sf-eyebrow{font-size:11px}}

.sf-discover-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.sf-discover-grid article,.sf-quiz,.sf-continue{border:1px solid var(--sf-line);border-radius:18px;padding:20px;background:var(--sf-surface);min-width:0}.sf-discover-grid article{display:flex;flex-direction:column;gap:12px}.sf-discover-grid h3,.sf-learn-bottom h3{margin:0;font-size:20px}.sf-discover-grid p{margin:0;line-height:1.6}.sf-discover-grid button{margin-top:auto}.sf-discover-grid a{font-size:13px}.sf-learn-bottom{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:24px}.sf #sf-quiz-choices{border:0;padding:0;margin:16px 0}.sf #sf-quiz-question{font-weight:650;margin-bottom:14px}.sf #sf-quiz-options{display:grid;gap:8px}.sf #sf-quiz-options button{text-align:left}.sf #sf-quiz-options button[aria-pressed=true]{background:var(--sf-soft);color:var(--sf-ink);border-color:var(--sf-blue)}.sf #sf-quiz-feedback{line-height:1.6}.sf #sf-quiz-feedback a{font-size:13px}.sf #sf-recent-topics{display:grid;gap:8px;margin:14px 0}.sf #sf-recent-topics a{padding:10px 0;min-height:44px}.sf .sf-remember-label{display:flex;gap:12px;align-items:center;font-weight:650}.sf #sf-remember{appearance:auto;width:22px;height:22px;min-width:22px;min-height:22px;margin:0;padding:0}.sf #sf-quiz-done button{display:block;margin-top:16px}.sf #sf-memory-status{font-size:13px;line-height:1.5}.sf-learning button:focus-visible{outline:3px solid #5087f2;outline-offset:3px}@media(max-width:760px){.sf-discover-grid,.sf-learn-bottom{grid-template-columns:1fr}.sf-discover-grid article,.sf-quiz,.sf-continue{padding:16px}}

.sf-topic-help{border-left:4px solid #b45309;background:var(--sf-soft,#fff7ed);padding:16px 20px;border-radius:12px;margin:20px 0}.sf-topic-help h3{margin-top:0}#sf-back-info details{border:1px solid var(--sf-border,#d8e2f2);border-radius:14px;padding:16px;margin:12px 0}#sf-back-info summary{cursor:pointer;font-weight:700;min-height:28px}#sf-back-info summary:focus-visible{outline:3px solid #4f80ff;outline-offset:4px}#sf-back-info a{overflow-wrap:anywhere}