._lesson_mdm29_1{--ink:var(--foreground);--muted:var(--muted-foreground);--line:var(--border);--blue:#4799b4;--gold:#b78a43;--plot:var(--card);color:var(--ink);padding-bottom:80px}._header_mdm29_11{max-width:920px;padding:52px 0 30px}._eyebrow_mdm29_15{font:11px var(--font-mono,monospace);letter-spacing:.15em;color:var(--gold);margin-bottom:18px}._header_mdm29_11 h1{font:400 clamp(35px, 4.4vw, 58px)/1.12 var(--font-serif,Georgia, serif);letter-spacing:-.035em;margin-bottom:24px}._header_mdm29_11 p,._intro_mdm29_27{max-width:900px;color:var(--muted);font-size:16px;line-height:1.85}._nav_mdm29_33{border-block:1px solid var(--line);flex-wrap:wrap;gap:12px 34px;margin:12px 0 40px;padding:19px 0;font-size:13px;display:flex}._nav_mdm29_33 a{color:var(--muted)}._nav_mdm29_33 a[aria-current=page]{color:var(--ink);text-underline-offset:8px;text-decoration:underline;-webkit-text-decoration-color:var(--gold);text-decoration-color:var(--gold)}._section_mdm29_51{margin:45px 0 62px;scroll-margin-top:100px}._section_mdm29_51 h2{font:400 clamp(24px, 2.5vw, 33px)/1.25 var(--font-serif,Georgia, serif);letter-spacing:-.02em;margin-bottom:20px}._section_mdm29_51 h2>small{font:11px var(--font-mono,monospace);color:var(--gold);margin-right:16px}._section_mdm29_51>p{color:var(--muted);max-width:940px;margin-bottom:24px;line-height:1.85}._bench_mdm29_71{border:1px solid var(--line);background:var(--card);border-radius:14px;grid-template-columns:minmax(0,1fr) 310px;display:grid;overflow:hidden}._visual_mdm29_79{background:radial-gradient(at 48% 38%,#5392a40a,#0000 78%);flex-direction:column;min-width:0;display:flex}._stage_mdm29_85{isolation:isolate;flex:1;min-height:480px;position:relative}._stage_mdm29_85 canvas{touch-action:none;width:100%;height:100%;display:block;position:absolute;inset:0}._stage_mdm29_85 canvas:focus-visible{outline:2px solid var(--blue);outline-offset:-3px}._stageTop_mdm29_103{color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:10px;padding:20px 22px 0;font-size:12px;display:flex}._stageLabel_mdm29_112{pointer-events:none;white-space:nowrap;font:12px var(--font-mono,monospace);background:color-mix(in srgb, var(--card) 86%, transparent);border:1px solid var(--line);border-radius:5px;padding:4px 8px;position:absolute;top:0;left:0}._stageLabel_mdm29_112[data-kind=first]{color:var(--gold)}._stageLabel_mdm29_112[data-kind=second]{color:var(--blue)}._stageHint_mdm29_130{color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:10px 22px 16px;font-size:11px;display:flex}._stageHint_mdm29_130 button{cursor:pointer;align-items:center;gap:5px;display:inline-flex}._panel_mdm29_146{border-left:1px solid var(--line);flex-direction:column;gap:19px;min-width:0;padding:25px;display:flex}._panel_mdm29_146 h3{font-size:16px;font-weight:500}._panel_mdm29_146 p{color:var(--muted);font-size:13px;line-height:1.7}._panel_mdm29_146 output{font-variant-numeric:tabular-nums}._presets_mdm29_166,._actions_mdm29_167{flex-wrap:wrap;gap:8px;display:flex}._presets_mdm29_166 button,._actions_mdm29_167 button,._choice_mdm29_174{border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:5px;padding:9px 12px;font-size:12px}._presets_mdm29_166 button[aria-pressed=true],._choice_mdm29_174[aria-pressed=true]{border-color:var(--gold);background:color-mix(in srgb, var(--gold) 9%, var(--card))}._actions_mdm29_167 button{align-items:center;gap:7px;display:inline-flex}._actions_mdm29_167 button:first-child{background:var(--foreground);color:var(--background)}._metrics_mdm29_196{border-top:1px solid var(--line);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}._metrics_mdm29_196>div{border-right:1px solid var(--line);min-width:0;padding:18px 20px}._metrics_mdm29_196>div:last-child{border:0}._metrics_mdm29_196 small{color:var(--muted);margin-bottom:9px;font-size:11px;display:block}._metrics_mdm29_196 strong{font-variant-numeric:tabular-nums;font-size:20px;font-weight:500}._caption_mdm29_220{border-top:1px solid var(--line);color:var(--muted);padding:21px 23px;font-size:13px;line-height:1.8}._legend_mdm29_227{color:var(--muted);border-top:1px solid var(--line);flex-wrap:wrap;gap:18px;padding:15px 22px;font-size:11px;display:flex}._legend_mdm29_227 i{background:currentColor;border-radius:50%;width:7px;height:7px;margin-right:6px;display:inline-block}._explain_mdm29_244{border-block:1px solid var(--line);grid-template-columns:1fr 1fr;gap:34px;margin:25px 0;padding:28px 0;display:grid}._explain_mdm29_244 h3,._cards_mdm29_253 h3{margin-bottom:12px;font-size:16px;font-weight:500}._explain_mdm29_244 p,._cards_mdm29_253 p{color:var(--muted);margin-block:12px;font-size:14px;line-height:1.8}._formula_mdm29_265{background:color-mix(in srgb, var(--blue) 5%, var(--card));border:1px solid var(--line);text-align:center;border-radius:8px;margin:20px 0;padding:23px 18px;font-size:19px;overflow-x:auto}._symbols_mdm29_275{border-block:1px solid var(--line);grid-template-columns:repeat(4,1fr);gap:24px;padding:22px 0;display:grid}._symbols_mdm29_275 dt{align-items:baseline;gap:9px;margin-bottom:9px;font-size:13px;display:flex}._symbols_mdm29_275 dt>span:first-child{color:var(--gold);font-size:20px}._symbols_mdm29_275 dd{color:var(--muted);font-size:12px;line-height:1.8}._spread_mdm29_298{background:var(--card);border:1px solid var(--line);width:100%;color:var(--ink);border-radius:12px;display:block}._spread_mdm29_298 text{fill:currentColor;font-family:var(--font-sans,Arial, sans-serif)}._flatControl_mdm29_310{max-width:620px;margin:24px auto}._cards_mdm29_253{grid-template-columns:repeat(3,1fr);gap:30px;display:grid}._cards_mdm29_253>div{border-top:2px solid var(--line);padding-top:19px}._unitSteps_mdm29_323{border:1px solid var(--line);border-radius:12px;grid-template-columns:220px minmax(0,1fr);display:grid;overflow:hidden}._stepList_mdm29_330{border-right:1px solid var(--line);flex-direction:column;gap:7px;padding:22px;display:flex}._stepList_mdm29_330 button{text-align:left}._unitResult_mdm29_340{min-width:0;min-height:285px;padding:25px}._unitResult_mdm29_340 h3{margin-bottom:16px;font-size:18px}._unitResult_mdm29_340 p{color:var(--muted);font-size:14px;line-height:1.8}._dimensionGrid_mdm29_354{grid-template-columns:repeat(3,1fr);gap:9px;margin-top:24px;display:grid}._dimensionGrid_mdm29_354>div{text-align:center;background:color-mix(in srgb, var(--gold) 7%, var(--card));border-radius:6px;padding:13px 8px;font-size:12px}._dimensionGrid_mdm29_354 small{color:var(--muted);margin-top:8px;display:block}._forceReadout_mdm29_372{border-top:1px solid var(--line);grid-template-columns:1fr 1fr;gap:0;display:grid}._forceReadout_mdm29_372>div{padding:18px 22px}._forceReadout_mdm29_372>div:first-child{border-right:1px solid var(--line)}._forceReadout_mdm29_372 h3{margin-bottom:7px;font-size:13px}._forceReadout_mdm29_372 p{color:var(--muted);font-size:12px;line-height:1.9}._note_mdm29_393{border-left:2px solid var(--gold);color:var(--muted);margin:24px 0;padding:12px 18px;font-size:14px;line-height:1.85}._quiz_mdm29_401{border:1px solid var(--line);border-radius:9px;margin:30px 0;padding:22px}._quiz_mdm29_401 summary{cursor:pointer;font-weight:500}._quiz_mdm29_401 p{color:var(--muted);margin-top:16px;line-height:1.85}._next_mdm29_416{border-block:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;margin-top:36px;padding:23px 0;display:flex}._sources_mdm29_425{color:var(--muted);flex-wrap:wrap;gap:12px 22px;margin-top:25px;font-size:12px;display:flex}._sources_mdm29_425 a{text-underline-offset:3px;text-decoration:underline}._failure_mdm29_437{color:var(--muted);padding:70px 30px}@media (max-width:900px){._bench_mdm29_71{grid-template-columns:1fr}._panel_mdm29_146{border-left:0;border-top:1px solid var(--line)}._stage_mdm29_85{min-height:450px}._symbols_mdm29_275{grid-template-columns:1fr 1fr}}@media (max-width:600px){._header_mdm29_11{padding-top:34px}._stage_mdm29_85{min-height:355px}._explain_mdm29_244,._cards_mdm29_253{grid-template-columns:1fr;gap:20px}._unitSteps_mdm29_323{grid-template-columns:1fr}._stepList_mdm29_330{border-right:0;border-bottom:1px solid var(--line);flex-flow:wrap;padding:15px}._unitResult_mdm29_340{padding:18px}._metrics_mdm29_196>div{padding:15px 9px}._metrics_mdm29_196 strong{font-size:17px}._forceReadout_mdm29_372{grid-template-columns:1fr}._forceReadout_mdm29_372>div:first-child{border-right:0;border-bottom:1px solid var(--line)}._formula_mdm29_265{font-size:15px}}