._lesson_lzyeo_1{--first:#167d83;--second:#ad632d;max-width:1280px;padding-top:27px}.dark ._lesson_lzyeo_1{--first:#74d7d3;--second:#edb37d}._back_lzyeo_8{color:var(--muted);align-items:center;gap:8px;margin-bottom:30px;font-size:13px;display:inline-flex}._bench_lzyeo_9{background:var(--plot);border:1px solid var(--border);border-radius:10px;grid-template-columns:minmax(0,1.5fr) minmax(320px,1fr);display:grid;overflow:hidden}._visual_lzyeo_10{align-self:start;min-width:0}._overline_lzyeo_11{font:10px var(--font-mono);letter-spacing:.1em;color:var(--muted);justify-content:space-between;gap:12px;padding:22px 25px 0;display:flex}._overline_lzyeo_11 span{color:var(--ink)}._plane_lzyeo_13{width:100%;height:auto;display:block}._plane_lzyeo_13 text{font-family:var(--font-mono), monospace}._axisNumbers_lzyeo_15{fill:var(--muted);opacity:.75;font-size:11px}._axisNames_lzyeo_16{fill:var(--muted);font-size:13px}._plotCaption_lzyeo_17{fill:var(--muted);font-size:10px}._vectorLabel_lzyeo_18{paint-order:stroke;stroke:var(--plot);stroke-width:4px;stroke-linejoin:round;font-size:13px;font-weight:550}._pointLabel_lzyeo_19{fill:var(--ink);paint-order:stroke;stroke:var(--plot);stroke-width:4px;font-size:13px}._unitSquare_lzyeo_20{fill:color-mix(in srgb, var(--first) 13%, transparent);stroke:var(--first);stroke-width:1.5px}._originalSquare_lzyeo_21{fill:none;stroke:var(--muted);stroke-width:1px;stroke-dasharray:4 5;opacity:.5}._letter_lzyeo_22{fill:color-mix(in srgb, var(--second) 22%, var(--plot));stroke:var(--second);stroke-width:1.5px}._side_lzyeo_23{border-left:1px solid var(--border);flex-direction:column;gap:19px;min-width:0;padding:27px;display:flex}._side_lzyeo_23 h3,._explanation_lzyeo_24 h3{font-size:17px;font-weight:500;line-height:1.5}._side_lzyeo_23 p,._side_lzyeo_23 dd,._explanation_lzyeo_24 p{color:var(--muted);font-size:14px;line-height:1.85}._definitions_lzyeo_26{gap:15px;margin:0;display:grid}._definitions_lzyeo_26>div{grid-template-columns:65px 1fr;gap:14px;display:grid}._definitions_lzyeo_26 dt{color:var(--ink);font-size:14px}._definitions_lzyeo_26 dd{margin:0}._matrixColumns_lzyeo_30{justify-content:flex-start;align-items:center;gap:17px;padding:10px 0;display:flex}._matrixName_lzyeo_31,._editorRow_lzyeo_31>span{font:italic 27px Georgia,serif}._bracket_lzyeo_32{border-left:2px solid var(--ink);border-right:2px solid var(--ink);border-radius:9px/30px;gap:7px;padding:5px 8px;display:flex;position:relative}._firstColumn_lzyeo_33,._secondColumn_lzyeo_33{border-radius:4px;padding:3px 10px}._firstColumn_lzyeo_33{color:var(--first);background:color-mix(in srgb, var(--first) 8%, transparent)}._secondColumn_lzyeo_33{color:var(--second);background:color-mix(in srgb, var(--second) 8%, transparent)}._columnKey_lzyeo_36{gap:12px;font-size:12px;display:grid}._firstColor_lzyeo_37{color:var(--first)}._secondColor_lzyeo_38{color:var(--second)}._formula_lzyeo_39{padding:10px 0;font-size:clamp(12px,1.15vw,15px);line-height:2}._formula_lzyeo_39 .katex{font-size:1.08em}._editorRow_lzyeo_31{align-items:center;gap:18px;display:flex}._matrixEditor_lzyeo_42{border-inline:2px solid var(--ink);border-radius:10px/30px;grid-template-columns:65px 65px;gap:7px 12px;padding:7px 11px;display:grid}._matrixEditor_lzyeo_42 input{border:1px solid var(--border);background:var(--soft);width:100%;font:18px var(--font-mono);text-align:center;border-radius:4px;padding:9px 4px}._matrixEditor_lzyeo_42 input:focus-visible{outline-offset:2px;outline:2px solid}._destinations_lzyeo_45{gap:24px;font-size:14px;display:flex}._notice_lzyeo_46{background:var(--soft);border-left:2px solid var(--second);color:var(--ink);padding:14px 16px;font-size:13px;line-height:1.8}._live_lzyeo_47{border-top:1px solid var(--border);color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;margin:15px 25px 0;padding:16px 0;font-size:12px;display:flex}._live_lzyeo_47>span{align-items:center;gap:15px;display:flex}._live_lzyeo_47 strong{color:var(--ink);font:20px var(--font-mono)}._live_lzyeo_47 .katex{color:var(--ink)}._timeline_lzyeo_51{gap:20px;padding:20px 25px 25px;display:grid}._buttons_lzyeo_52{align-items:center;gap:9px;display:flex}._buttons_lzyeo_52 button{background:var(--soft);border:1px solid var(--border);color:var(--ink);cursor:pointer;border-radius:5px;justify-content:center;align-items:center;gap:8px;min-height:40px;padding:10px 14px;font-size:13px;display:inline-flex}._buttons_lzyeo_52 button:hover{border-color:var(--first);color:var(--first)}._buttons_lzyeo_52 button:focus-visible{outline:2px solid var(--first);outline-offset:3px}._explanation_lzyeo_24{gap:15px;max-width:960px;padding:27px 0 0;display:grid}._explanation_lzyeo_24>.math-inline{padding-block:7px;font-size:clamp(12px,1.8vw,17px)}._gallery_lzyeo_58{grid-template-columns:1fr 1fr;gap:24px;display:grid}._card_lzyeo_59{border:1px solid var(--border);background:var(--plot);border-radius:10px;flex-direction:column;min-width:0;scroll-margin-top:110px;display:flex;overflow:hidden}._card_lzyeo_59 header{align-items:center;gap:14px;padding:25px 25px 12px;display:flex}._card_lzyeo_59 header>span{color:var(--gold);font:22px Georgia,serif}._card_lzyeo_59 h3{font-size:23px;font-weight:500}._cardIntro_lzyeo_63{color:var(--muted);min-height:76px;margin-inline:25px;font-size:14px;line-height:1.8}._cardControls_lzyeo_64{flex-direction:column;flex:1;gap:22px;padding:14px 25px 25px;display:flex}._cardControls_lzyeo_64>._formula_lzyeo_39{text-align:center;min-height:80px;font-size:14px}._pairedControls_lzyeo_66{grid-template-columns:1fr 1fr;gap:23px;display:grid}._metrics_lzyeo_67{color:var(--muted);flex-wrap:wrap;gap:18px 38px;margin-top:auto;font-size:12px;display:flex}._metrics_lzyeo_67>span{flex-direction:column;gap:7px;display:flex}._metrics_lzyeo_67 strong{font:21px var(--font-mono);color:var(--ink)}._card_lzyeo_59>._timeline_lzyeo_51{padding:20px 25px 0}._visual_lzyeo_10>._timeline_lzyeo_51{padding-bottom:0}._takeaway_lzyeo_72{color:var(--muted);border-top:1px solid var(--border);padding-top:17px;font-size:13px;line-height:1.8}._summary_lzyeo_73{border-top:1px solid var(--border);gap:20px;max-width:900px;margin-top:45px;padding:35px 0 0;display:grid}._summary_lzyeo_73 h2{font-size:25px;font-weight:500}._summary_lzyeo_73 p{font-size:15px;line-height:1.9}._muted_lzyeo_76{color:var(--muted)}@media (max-width:900px){._bench_lzyeo_9{grid-template-columns:1fr}._side_lzyeo_23{border-left:0;border-top:1px solid var(--border)}._formula_lzyeo_39{font-size:15px}._gallery_lzyeo_58{gap:16px}._card_lzyeo_59 header,._cardControls_lzyeo_64{padding-inline:18px}._cardIntro_lzyeo_63{margin-inline:18px}._cardControls_lzyeo_64>._formula_lzyeo_39{font-size:12px}}@media (max-width:650px){._lesson_lzyeo_1{padding-top:18px}._gallery_lzyeo_58{grid-template-columns:1fr}._cardIntro_lzyeo_63{min-height:0}._side_lzyeo_23{padding:22px 18px}._overline_lzyeo_11{padding-inline:18px;font-size:9px}._live_lzyeo_47{margin-inline:18px}._timeline_lzyeo_51{padding-inline:18px}._formula_lzyeo_39{font-size:12px}._matrixColumns_lzyeo_30{gap:12px}._cardControls_lzyeo_64>._formula_lzyeo_39{font-size:13px}._columnKey_lzyeo_36{font-size:11px}}