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button:hover,.quiz-options button[aria-pressed=true]{border-color:var(--ui-accent);background:color-mix(in srgb, var(--ui-accent) 8%, var(--bg-panel))}.quiz-options button[data-correct=true]{color:var(--ui-accent)}.quiz-reason{color:var(--ui-accent);margin:16px 0 0;line-height:1.8}.learning-transfer{max-width:76ch;margin:26px 0}.learning-transfer h3{margin:0 0 10px;font-size:16px}.learning-transfer p{color:var(--ui-muted);line-height:1.9}.learning-source{color:var(--ui-muted);align-items:center;gap:6px;margin-top:24px;font-size:12px;display:flex}.learning-source a{color:var(--ui-accent);text-underline-offset:4px;align-items:center;gap:6px;display:inline-flex}.guide-heading{grid-template-columns:320px minmax(0,1fr);align-items:center;gap:28px;margin:8px 0 26px;display:grid}.guide-heading>img{object-fit:cover;border-radius:12px;width:100%;height:170px}.guide-heading label{color:var(--ui-muted);align-items:center;gap:16px;font-size:13px;display:flex}.guide-heading select{max-width:400px}.guide-heading h2{margin:12px 0 18px;font-size:28px;line-height:1.5}.guide-columns{grid-template-columns:minmax(0,1.6fr) minmax(260px,1fr);gap:38px;padding-top:22px;display:grid}.guide-columns h2{margin:0 0 16px;font-size:23px}.guide-columns h3{margin:24px 0 10px;font-size:16px}.guide-columns li{margin:14px 0;line-height:1.85}.guide-columns p{line-height:1.8}.guide-columns ol{max-width:75ch;padding-left:22px}.guide-columns aside{border-left:1px solid var(--ui-line);padding-left:26px}.guide-columns small{color:var(--ui-muted);font-size:12px;display:block}.guide-columns .detail-list>div{padding:10px 0}.scene-guide-content .motion-tabs{border-bottom:1px solid var(--ui-line)}.lab-controls{grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:20px;margin:0 0 24px;display:grid}.lab-controls label{color:var(--ui-muted);align-content:start;gap:10px;font-size:13px;display:grid}.lab-controls output{font-variant-numeric:tabular-nums;color:var(--ui-text)}.lab-controls input[type=range]{width:100%}.lab-content{grid-template-columns:minmax(350px,1fr) minmax(390px,1fr);align-items:center;gap:30px;display:grid}.lab-diagrams{grid-template-columns:1fr 1fr;gap:16px;display:grid}.lab-diagrams figure{min-width:0;margin:0}.lab-diagrams svg{max-height:300px}.lab-diagrams figcaption{text-align:center;color:var(--ui-muted);padding:10px;font-size:13px}.lab-results{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;font-size:14px}.lab-results th,.lab-results td{text-align:right;border-bottom:1px solid var(--ui-line);padding:13px 10px}.lab-results th:first-child{text-align:left;font-weight:500}.lab-results thead th{color:var(--ui-muted);font-weight:500}.lab-results tr[data-changed=true] td:last-child{color:var(--ui-accent);font-weight:600}.learning-lab>.small{max-width:100ch;margin:22px 0;line-height:1.8}.feedback-list{gap:18px;padding-left:22px;display:grid}.feedback-list li{line-height:1.85}.feedback-list button{margin-top:7px;display:block}.dialog .guide-columns{grid-template-columns:minmax(0,1fr) 230px;gap:22px}.dialog .guide-columns aside{padding-left:18px}.dialog .guide-columns h2{font-size:20px}.lab-controls label{min-width:0}.lab-controls select{width:100%;min-width:0;max-width:100%}.guide-heading select{min-width:0}.lab-step-actions{margin:0 0 18px}.lab-explanation h2{margin:0 0 18px;font-size:20px;line-height:1.5}.lab-explanation p{max-width:65ch;color:var(--ui-text);margin:20px 0 0;line-height:1.9}.lab-secondary{border-top:1px solid var(--ui-line);margin-top:24px;padding-top:16px}.lab-secondary summary{cursor:pointer;color:var(--ui-accent);padding:6px 0}.lab-secondary dl{max-width:85ch;margin:22px 0;line-height:1.8}.lab-secondary dl>div{margin:18px 0}.lab-secondary dt{font-weight:600}.lab-secondary dd{color:var(--ui-muted);margin:5px 0 0}.guide-spot-select{justify-content:space-between;align-items:center;gap:18px;font-size:13px;display:flex}.guide-spot-select label{align-items:center;gap:12px;display:flex}.guide-spot-select select{max-width:220px}.guide-spot-select span{color:var(--ui-muted);font-variant-numeric:tabular-nums}.spot-map{max-width:620px;margin:20px 0 26px}.spot-map svg{width:100%;max-height:265px;color:var(--ui-text);display:block}.spot-map figcaption{color:var(--ui-muted);margin-top:9px;font-size:12px;line-height:1.6}.spot-map .map-land{fill:color-mix(in srgb, var(--ui-accent) 6%, var(--bg-panel))}.spot-map .map-water{fill:color-mix(in srgb, var(--ui-accent) 22%, var(--bg-panel))}.spot-map text{fill:var(--ui-text);font-family:inherit;font-size:11px}.map-cast{stroke:var(--ui-accent);stroke-dasharray:4 4;stroke-width:1.3px}.map-target,.map-scale{stroke:var(--ui-accent);fill:none;stroke-width:1.5px}.map-spot{cursor:pointer;outline:none}.map-spot circle{fill:var(--bg-panel);stroke:var(--ui-accent);stroke-width:1.5px;transition:fill .2s,stroke-width .2s}.map-spot[aria-pressed=true] circle{fill:var(--ui-accent)}.map-spot[aria-pressed=true] text{fill:var(--bg-panel)}.map-spot:hover circle,.map-spot:focus-visible circle{stroke-width:3.5px}.map-spot[aria-disabled=true]{cursor:default}.map-position{fill:var(--ui-accent);stroke:var(--bg-panel);stroke-width:2px}.guide-spot-select label{white-space:nowrap}