:root{--ka-bg:#05070b;--ka-panel:#111827;--ka-line:#334155;--ka-text:#e5e7eb;--ka-muted:#94a3b8;--ka-paper:#202124;--ka-paper-text:#f3f4f6;--ka-answer:#ff4d8d;--ka-blue:#2563eb;--ka-green:#15803d;--ka-red:#b91c1c}
*{box-sizing:border-box}
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.ka-geo{display:inline-block;overflow:visible;max-width:100%}.geo-line,.geo-shape,.axis,.tick{fill:none;stroke:currentColor;stroke-width:2}.geo-shape{stroke-width:2.2}.geo-dash{fill:none;stroke:currentColor;stroke-width:1.5;stroke-dasharray:5 4}.answer-line-svg{fill:none;stroke:#e11d48;stroke-width:2.2}.geo-dot{fill:currentColor}.geo-label,.geo-value,.svg-note{fill:currentColor;font-family:"Microsoft JhengHei","Noto Sans TC",sans-serif}.geo-label{font-size:12px;font-weight:800}.geo-value{font-size:12px;font-weight:900;fill:#fb7185}.svg-note{font-size:8px;opacity:.7}.construct-arc{fill:none;stroke:#38bdf8;stroke-width:1.25;stroke-dasharray:4 3}.frac{display:inline-flex;flex-direction:column;text-align:center;vertical-align:middle;line-height:1.02}.frac .top{border-bottom:1px solid currentColor;padding:0 2px}.frac .bottom{padding:0 2px}
.mini-svg{height:88px;text-align:center;overflow:hidden}.mini-svg .ka-geo{height:86px;width:auto}.problem-box .ka-geo{height:118px;width:auto;max-width:100%}
@media(max-width:900px){body.ka-g8s2-page{padding-top:118px}.ka-g8s2-page .topbar{flex-wrap:wrap}.ka-g8s2-page .actions{margin-left:0}.ka-g8s2-page .settings{justify-content:flex-start}.ka-g8s2-page .page-wrap{transform:scale(.76);transform-origin:top center;margin-bottom:-68mm}}
@media print{.ka-g8s2-page .no-print{display:none!important}body.ka-g8s2-page{padding:0;background:#fff}.ka-g8s2-page .page-wrap{transform:none;margin:0;width:210mm}.ka-g8s2-page .page{box-shadow:none;border:0;background:#fff!important;color:#111827!important}.ka-g8s2-page .meta,.ka-g8s2-page .q-title,.ka-g8s2-page .paper-footer{color:#334155!important}.ka-g8s2-page .geo-line,.ka-g8s2-page .geo-shape,.ka-g8s2-page .axis,.ka-g8s2-page .tick,.ka-g8s2-page .geo-dash{stroke:#111827}.ka-g8s2-page .geo-label,.ka-g8s2-page .svg-note{fill:#111827}@page{size:A4;margin:0}}