.chapter_root__dW9Bb{--paper:#f7f6f2;--surface:#fff;--ink:#203337;--secondary:#597073;--accent:#176b65;--soft:#e9f2ed;--line:#dfe5df;--gold:#ad7124;--goldSoft:#fff3dd;--radius:12px;color:var(--ink);background:var(--paper);width:100%;min-width:0;font-family:Segoe UI,Microsoft YaHei,sans-serif;line-height:1.65;padding:0 24px 28px}.chapter_root__dW9Bb *{box-sizing:border-box}.chapter_root__dW9Bb a,.chapter_root__dW9Bb button{-webkit-tap-highlight-color:transparent}.chapter_root__dW9Bb button{font:inherit;cursor:pointer;color:var(--ink)}.chapter_root__dW9Bb a{color:var(--accent);text-decoration:none}.chapter_root__dW9Bb a:hover{text-decoration:underline}.chapter_root__dW9Bb button:disabled{opacity:.4;cursor:default}.chapter_node__t5Wfa:focus-visible,.chapter_root__dW9Bb a:focus-visible,.chapter_root__dW9Bb button:focus-visible{outline:3px solid var(--gold);outline-offset:3px}.chapter_root__dW9Bb button{border:1px solid var(--line);background:var(--surface);border-radius:6px;padding:7px 12px}.chapter_root__dW9Bb button:hover:not(:disabled){background:var(--soft)}.chapter_header__Yy_GG{max-width:1600px;margin:auto;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}.chapter_breadcrumb__vB9g4,.chapter_tools__L26e1{display:flex;align-items:center;gap:14px}.chapter_breadcrumb__vB9g4{font-size:14px}.chapter_breadcrumb__vB9g4>span:first-of-type{color:var(--secondary)}.chapter_tools__L26e1{gap:6px;font-size:13px}.chapter_tools__L26e1 a{padding:6px 12px;border-radius:6px;color:var(--secondary)}.chapter_tools__L26e1 .chapter_modeActive__r1a66{background:var(--accent);color:var(--surface)}.chapter_layout__a3XnP{display:grid;grid-template-columns:220px minmax(0,1fr);grid-gap:26px;gap:26px;max-width:1600px;margin:22px auto 0}.chapter_sidebar__j3MsN{min-width:0;align-self:start;position:-webkit-sticky;position:sticky;top:20px;max-height:calc(100dvh - 125px);overflow-y:auto;scrollbar-width:thin;padding-right:14px;border-right:1px solid var(--line)}.chapter_sideTitle__p4y9U{display:grid;grid-gap:4px;gap:4px;padding:4px 12px 16px}.chapter_sideTitle__p4y9U small{font-size:11px;color:var(--secondary);letter-spacing:.12em}.chapter_sideTitle__p4y9U strong{font-size:18px}.chapter_navGroup__VeUoj{padding:8px 0}.chapter_navGroup__VeUoj h2{display:grid;grid-gap:0;gap:0;margin:6px 10px;font-size:13px;color:var(--secondary);font-weight:600}.chapter_navGroup__VeUoj h2 span{font-size:11px;color:var(--accent);font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.chapter_root__dW9Bb .chapter_navItem__wnE1H{display:block;width:100%;padding:7px 10px;margin:2px 0;text-align:left;border:0;border-radius:5px;background:transparent;color:var(--secondary);font-size:13px;white-space:normal;line-height:1.5}.chapter_root__dW9Bb .chapter_navActive__4FVCD{background:var(--soft);color:var(--accent);font-weight:700;border-left:3px solid var(--accent)}.chapter_mainArea__nSgyu{min-width:0}.chapter_slide__I_WgL{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);height:clamp(580px,calc(100dvh - 230px),980px);box-shadow:0 10px 32px #20333708;min-width:0}.chapter_slideScroll__xZdH_{height:100%;overflow:auto;scrollbar-width:thin;padding:34px clamp(24px,3vw,52px)}.chapter_topicHeader__6I19z{margin:0 0 24px;border-bottom:1px solid var(--line);padding-bottom:18px}.chapter_kicker__BxXre{font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.08em}.chapter_topicHeader__6I19z h1{font-size:clamp(27px,2.7vw,40px);font-weight:750;line-height:1.25;margin:10px 0 0;letter-spacing:-.02em}.chapter_topicBody__4A1aG{min-width:0}.chapter_illustrated__1IFH2{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:start;grid-gap:26px;gap:26px}.chapter_prose__BWhz9{min-width:0;font-size:18px;line-height:1.9;overflow-wrap:anywhere}.chapter_prose__BWhz9>:first-child{margin-top:0}.chapter_prose__BWhz9 p{margin:0 0 16px}.chapter_prose__BWhz9 ol,.chapter_prose__BWhz9 ul{padding-left:1.35em;margin:0 0 18px}.chapter_prose__BWhz9 li{margin:7px 0}.chapter_prose__BWhz9 strong{color:var(--accent);font-weight:700}.chapter_prose__BWhz9 pre{background:#f2f5f3;color:var(--ink);border:1px solid var(--line);padding:18px 20px;border-radius:8px;overflow:auto;font-size:15px;line-height:1.7}.chapter_prose__BWhz9 code{font-family:Consolas,monospace}.chapter_prose__BWhz9 .katex-display{overflow-x:auto;overflow-y:hidden;padding:5px 0;font-size:.94em}.chapter_tableScroll__dMPMv{overflow:auto;margin:16px 0}.chapter_prose__BWhz9 table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.65}.chapter_prose__BWhz9 td,.chapter_prose__BWhz9 th{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}.chapter_prose__BWhz9 th{background:var(--soft);color:var(--accent);font-weight:650}.chapter_prose__BWhz9 td:first-child{font-weight:600;min-width:80px}.chapter_topicLinks__0p_QH{display:flex;flex-wrap:wrap;gap:9px 22px;padding-top:16px;border-top:1px solid var(--line);margin-top:24px;font-size:13px}.chapter_deckFooter__hszy8{display:flex;align-items:center;gap:18px;padding:15px 0 0;font-size:13px}.chapter_deckFooter__hszy8 span{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;min-width:50px;text-align:center;color:var(--secondary)}.chapter_deckFooter__hszy8 progress{flex:1 1;min-width:20px;height:4px;accent-color:var(--accent)}.chapter_deckFooter__hszy8 button:last-child{background:var(--accent);color:white;border-color:var(--accent)}.chapter_cover__xucbl{height:100%;min-height:440px;display:grid;grid-template-columns:1.05fr 1fr;grid-gap:40px;gap:40px;align-items:center}.chapter_cover__xucbl h1{font-size:clamp(65px,7vw,110px);font-family:STSong,SimSun,serif;letter-spacing:.08em;font-weight:600;line-height:1.1;margin:18px 0 20px}.chapter_cover__xucbl p{color:var(--secondary);font-size:21px;line-height:1.85;margin:0 0 26px}.chapter_coverSections__pzB9A{display:grid;grid-gap:0;gap:0;border-top:1px solid var(--line)}.chapter_root__dW9Bb .chapter_coverSections__pzB9A button{display:flex;align-items:center;gap:15px;border:0;border-bottom:1px solid var(--line);border-radius:0;background:transparent;text-align:left;font-size:15px;padding:13px 0}.chapter_coverSections__pzB9A button span{color:var(--accent);font-size:12px;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.chapter_coverSections__pzB9A button b{margin-left:auto;font-weight:400}.chapter_coverVisual__ewp30{display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;border:1px solid var(--line);border-radius:50%;aspect-ratio:1;max-width:380px;background:radial-gradient(circle,var(--soft),transparent 70%);padding:60px 16px}.chapter_coverVisual__ewp30>span{display:grid;place-items:center;width:64px;height:64px;border:2px solid var(--accent);border-radius:50%;color:var(--accent);font:28px Georgia,serif;background:var(--surface)}.chapter_coverVisual__ewp30 i{font-size:23px;font-style:normal;color:var(--accent)}.chapter_coverVisual__ewp30 small{width:100%;text-align:center;color:var(--secondary);letter-spacing:.12em}.chapter_reading__yYp53{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:36px clamp(22px,3vw,48px)}.chapter_readingHeader__hlGw1{padding-bottom:20px;border-bottom:1px solid var(--line)}.chapter_readingHeader__hlGw1 h1{font-size:32px;margin:10px 0 0;line-height:1.4}.chapter_readingTopic__vdzpt{padding:28px 0;scroll-margin-top:24px;border-bottom:1px solid var(--line)}.chapter_readingTopic__vdzpt>h2{font-size:25px;margin:0 0 20px;color:var(--ink)}.chapter_readingTopic__vdzpt .chapter_prose__BWhz9{font-size:16px;line-height:1.95}.chapter_readingTopic__vdzpt .chapter_topicLinks__0p_QH{border:0;margin-top:6px;padding-top:8px}.chapter_sectionFooter__DWNS3{display:flex;gap:12px;flex-wrap:wrap;padding-top:24px;font-size:13px}.chapter_sectionFooter__DWNS3 a{padding:6px 10px;border:1px solid var(--line);border-radius:6px}.chapter_sectionFooter__DWNS3 a[aria-current=page]{background:var(--soft)}.chapter_diagram__QMrSW{min-width:0;margin:0;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);padding:16px}.chapter_diagram__QMrSW figcaption{border-top:1px solid var(--line);padding-top:12px;margin-top:14px;color:var(--secondary);font-size:13px;line-height:1.8;min-height:3em}.chapter_diagram__QMrSW figcaption b{color:var(--accent)}.chapter_tabs__mVPjf{display:flex;gap:5px;flex-wrap:wrap}.chapter_root__dW9Bb .chapter_tabs__mVPjf button{flex:1 1;padding:6px 7px;white-space:nowrap;font-size:12px}.chapter_root__dW9Bb .chapter_tabs__mVPjf button[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:white}.chapter_network__oXKtX{display:block;width:100%;height:auto;color:var(--accent);margin:12px 0}.chapter_edges__KmWc9 line{stroke:currentColor;stroke-width:2.5}.chapter_node__t5Wfa circle{fill:var(--surface);stroke:var(--accent);stroke-width:2}.chapter_node__t5Wfa text{fill:var(--ink);font-size:18px;font-family:Consolas,monospace;font-weight:600}.chapter_node__t5Wfa[role=button]{cursor:pointer}.chapter_node__t5Wfa.chapter_selectedNode__oKmba circle{fill:var(--goldSoft);stroke:var(--gold);stroke-width:3}.chapter_node__t5Wfa:hover circle{stroke-width:3}.chapter_records__4Rm8z{margin:20px 0;border:2px solid transparent;border-radius:8px;padding:5px}.chapter_recordHead__WSLo7,.chapter_recordRow__j_kx9{display:grid;grid-template-columns:1.25fr 1fr .7fr;grid-gap:3px;gap:3px}.chapter_recordHead__WSLo7{font-size:12px;color:var(--secondary);padding:0 6px 8px}.chapter_recordRow__j_kx9{border:2px solid transparent;border-radius:5px;margin:3px 0;font-size:14px}.chapter_recordRow__j_kx9 span{padding:10px 6px;background:var(--surface);border-radius:4px}.chapter_elementFocus__u9_0L,.chapter_objectFocus__U1PqI{border-color:var(--accent)}.chapter_recordRow__j_kx9 .chapter_itemFocus__7sPcX{background:var(--goldSoft);outline:2px solid var(--gold)}.chapter_stackStage__KBdST{display:flex;align-items:center;gap:30px;justify-content:center;min-height:205px}.chapter_stack__5MYqX{min-width:100px;min-height:135px;display:flex;flex-direction:column;justify-content:flex-end;border:2px solid var(--accent);border-top:0;padding:5px}.chapter_stack__5MYqX>div{position:relative;background:var(--soft);border:1px solid var(--line);padding:7px 14px;text-align:center;font-weight:700;margin-top:4px}.chapter_stack__5MYqX small{font-size:10px;margin-left:12px;color:var(--accent)}.chapter_stack__5MYqX p{font-size:13px;text-align:center}.chapter_stackOptions__kkqct{display:grid;grid-gap:10px;gap:10px;font-size:13px}.chapter_stackOptions__kkqct>b{background:var(--surface);border:1px solid var(--line);padding:6px 14px;text-align:center}.chapter_stackOptions__kkqct small{max-width:145px;color:var(--secondary)}.chapter_array__fQwGT{display:flex;gap:6px;padding:30px 0;min-width:0}.chapter_array__fQwGT>div{flex:1 1;min-width:0;display:grid;grid-gap:12px;gap:12px;text-align:center;border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:12px 3px}.chapter_array__fQwGT small{font-size:10px;color:var(--secondary)}.chapter_array__fQwGT b{font-size:20px}.chapter_array__fQwGT .chapter_activeCell__p_pG3{background:var(--goldSoft);border-color:var(--gold)}.chapter_array__fQwGT .chapter_visitedCell__0za_O{background:var(--soft);border-color:var(--accent)}.chapter_demoControls__PkVzg{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12px}.chapter_root__dW9Bb .chapter_demoControls__PkVzg button{font-size:12px;padding:6px 10px}.chapter_demoControls__PkVzg span{color:var(--secondary)}.chapter_demoLabel__ptl38{font-size:13px;color:var(--secondary);margin-top:14px}.chapter_range__qbEUQ{display:grid;grid-gap:14px;gap:14px;font-size:13px;margin:14px 0}.chapter_range__qbEUQ input{width:100%;accent-color:var(--accent)}.chapter_averageBars__Y3Mml{display:flex;align-items:flex-end;gap:6px;min-height:145px}.chapter_averageBars__Y3Mml>div{flex:1 1;min-width:0;display:flex;flex-direction:column;align-items:center;gap:6px}.chapter_averageBars__Y3Mml small{font-size:10px;color:var(--secondary)}.chapter_averageBars__Y3Mml span{background:var(--accent);width:65%;border-radius:4px 4px 0 0;transition:height .2s}.chapter_averageBars__Y3Mml b{font-size:12px}.chapter_loopGrid__WvIIg{display:grid;grid-gap:4px;gap:4px;max-width:260px;margin:20px auto}.chapter_loopGrid__WvIIg i{aspect-ratio:1;border:1px solid var(--line);border-radius:3px}.chapter_loopGrid__WvIIg .chapter_counted__8CK8f{background:var(--accent);border-color:var(--accent)}.chapter_root__dW9Bb:-webkit-full-screen{padding:0 28px 16px;overflow:auto}.chapter_root__dW9Bb:fullscreen{padding:0 28px 16px;overflow:auto}.chapter_root__dW9Bb:-webkit-full-screen .chapter_slide__I_WgL{height:calc(100dvh - 145px);max-height:none}.chapter_root__dW9Bb:fullscreen .chapter_slide__I_WgL{height:calc(100dvh - 145px);max-height:none}.chapter_root__dW9Bb:-webkit-full-screen .chapter_sidebar__j3MsN{max-height:calc(100dvh - 100px)}.chapter_root__dW9Bb:fullscreen .chapter_sidebar__j3MsN{max-height:calc(100dvh - 100px)}@media(min-width:1600px){.chapter_slideScroll__xZdH_{padding-top:44px}.chapter_prose__BWhz9{font-size:20px}.chapter_prose__BWhz9 table{font-size:17px}}@media(max-width:1100px){.chapter_layout__a3XnP{grid-template-columns:185px minmax(0,1fr);gap:16px}.chapter_root__dW9Bb{padding-left:16px;padding-right:16px}.chapter_illustrated__1IFH2{grid-template-columns:1fr}.chapter_diagram__QMrSW{max-width:620px;width:100%;justify-self:center}.chapter_cover__xucbl{gap:20px}.chapter_coverVisual__ewp30>span{width:44px;height:44px;font-size:21px}.chapter_coverVisual__ewp30{gap:7px}.chapter_prose__BWhz9{font-size:17px}.chapter_sidebar__j3MsN{padding-right:8px}.chapter_slide__I_WgL{height:calc(100dvh - 210px);min-height:580px}}@media(max-width:760px){.chapter_header__Yy_GG{flex-wrap:wrap;padding:12px 0;gap:10px}.chapter_breadcrumb__vB9g4{font-size:13px}.chapter_tools__L26e1{width:100%}.chapter_tools__L26e1 button:nth-last-child(2){margin-left:auto}.chapter_layout__a3XnP{display:block;margin-top:14px}.chapter_sidebar__j3MsN{display:none;position:relative;top:0;max-height:55dvh;margin-bottom:16px;border:1px solid var(--line);border-radius:8px;padding:14px;background:var(--surface)}.chapter_menuOpen__sK7_h{display:block}.chapter_root__dW9Bb{padding:0 12px 22px}.chapter_slide__I_WgL{height:auto;min-height:0}.chapter_slideScroll__xZdH_{height:auto;max-height:none;padding:24px 20px;overflow:visible}.chapter_slideScroll__xZdH_ article{min-height:410px}.chapter_cover__xucbl{display:block;min-height:520px}.chapter_coverVisual__ewp30{display:none}.chapter_cover__xucbl h1{font-size:75px}.chapter_cover__xucbl p{font-size:19px}.chapter_topicHeader__6I19z h1{font-size:27px}.chapter_prose__BWhz9{font-size:16px;line-height:1.85}.chapter_prose__BWhz9 table{font-size:13px}.chapter_prose__BWhz9 td,.chapter_prose__BWhz9 th{padding:8px}.chapter_topicLinks__0p_QH{font-size:12px;gap:10px 16px}.chapter_deckFooter__hszy8{position:-webkit-sticky;position:sticky;bottom:0;background:var(--paper);padding:12px 0;gap:10px;z-index:2}.chapter_deckFooter__hszy8 button{font-size:12px}.chapter_reading__yYp53{padding:22px 18px}.chapter_readingHeader__hlGw1 h1{font-size:27px}.chapter_readingTopic__vdzpt>h2{font-size:23px}.chapter_readingTopic__vdzpt{scroll-margin-top:16px}.chapter_diagram__QMrSW{padding:12px}.chapter_array__fQwGT{gap:4px}.chapter_array__fQwGT b{font-size:17px}.chapter_stackStage__KBdST{gap:18px}.chapter_root__dW9Bb:-webkit-full-screen .chapter_slide__I_WgL{height:auto}.chapter_root__dW9Bb:fullscreen .chapter_slide__I_WgL{height:auto}.chapter_root__dW9Bb:-webkit-full-screen .chapter_sidebar__j3MsN{max-height:50dvh}.chapter_root__dW9Bb:fullscreen .chapter_sidebar__j3MsN{max-height:50dvh}}.chapter_slide__I_WgL{display:flex;flex-direction:column}.chapter_slideScroll__xZdH_{flex:1 1;min-height:0}.chapter_slideLinks__VVTIf{padding:0 clamp(24px,3vw,52px) 16px}.chapter_slideLinks__VVTIf .chapter_topicLinks__0p_QH{margin-top:0;padding-top:12px}.chapter_teaching__l_3zJ .chapter_prose__BWhz9{font-size:17px;line-height:1.75}.chapter_teaching__l_3zJ .chapter_prose__BWhz9 table{font-size:14px}.chapter_teaching__l_3zJ .chapter_prose__BWhz9 td,.chapter_teaching__l_3zJ .chapter_prose__BWhz9 th{padding:8px 12px}.chapter_teaching__l_3zJ .chapter_topicHeader__6I19z{padding-bottom:14px;margin-bottom:18px}.chapter_teaching__l_3zJ .chapter_prose__BWhz9 td:first-child{min-width:88px}.chapter_readingTopic__vdzpt{scroll-margin-top:84px}.chapter_sidebar__j3MsN{top:76px}.chapter_root__dW9Bb:-webkit-full-screen .chapter_sidebar__j3MsN{top:20px}.chapter_root__dW9Bb:fullscreen .chapter_sidebar__j3MsN{top:20px}@media(max-width:760px){.chapter_sidebar__j3MsN{top:0}.chapter_slideLinks__VVTIf{padding:0 20px 18px}.chapter_teaching__l_3zJ .chapter_prose__BWhz9{font-size:16px}.chapter_deckFooter__hszy8{padding-right:54px}.chapter_deckFooter__hszy8 progress{display:none}.chapter_deckFooter__hszy8 span{flex:1 1}.chapter_teaching__l_3zJ .chapter_prose__BWhz9 td,.chapter_teaching__l_3zJ .chapter_prose__BWhz9 th{padding:8px}.chapter_teaching__l_3zJ .chapter_prose__BWhz9 table{font-size:13px}}@media(min-width:761px){.chapter_teaching__l_3zJ .chapter_slide__I_WgL{height:calc(100dvh - 280px);min-height:360px}.chapter_teaching__l_3zJ .chapter_sidebar__j3MsN{max-height:calc(100dvh - 240px)}.chapter_teaching__l_3zJ .chapter_deckFooter__hszy8{padding-right:64px}.chapter_teaching__l_3zJ:-webkit-full-screen .chapter_slide__I_WgL{height:calc(100dvh - 145px)}.chapter_teaching__l_3zJ:fullscreen .chapter_slide__I_WgL{height:calc(100dvh - 145px)}.chapter_teaching__l_3zJ:-webkit-full-screen .chapter_sidebar__j3MsN{max-height:calc(100dvh - 100px)}.chapter_teaching__l_3zJ:fullscreen .chapter_sidebar__j3MsN{max-height:calc(100dvh - 100px)}.chapter_teaching__l_3zJ:-webkit-full-screen .chapter_deckFooter__hszy8{padding-right:0}.chapter_teaching__l_3zJ:fullscreen .chapter_deckFooter__hszy8{padding-right:0}}.chapter_root__dW9Bb.chapter_diagramHost__BO1ER{padding:0;background:transparent;margin:22px 0}@media(prefers-reduced-motion:reduce){.chapter_root__dW9Bb *{transition:none!important;scroll-behavior:auto!important}}.foundation-diagrams_diagram__3U8bx{--diagram-ink:#213b3c;--diagram-accent:#237c70;--diagram-line:#d3dfda;margin:24px 0;padding:22px;border:1px solid var(--diagram-line);border-radius:10px;background:#f7faf7;color:var(--diagram-ink);font-size:16px;line-height:1.6;max-width:760px}.foundation-diagrams_diagram__3U8bx figcaption{font-size:18px;font-weight:650;margin-bottom:18px}.foundation-diagrams_diagram__3U8bx label{display:grid;grid-template-columns:1fr 1fr;align-items:center;grid-gap:16px;gap:16px;margin:14px 0}.foundation-diagrams_diagram__3U8bx input{width:100%;accent-color:var(--diagram-accent)}.foundation-diagrams_diagram__3U8bx output{display:block;font-weight:650;margin-top:18px;min-height:32px}.foundation-diagrams_diagram__3U8bx p{font-size:13px;margin:14px 0 0!important;color:#53676a}.foundation-diagrams_diagram__3U8bx table{width:100%;border-collapse:collapse;margin:12px 0;background:transparent;font-size:15px}.foundation-diagrams_diagram__3U8bx td,.foundation-diagrams_diagram__3U8bx th{padding:6px 12px;border:1px solid var(--diagram-line);text-align:center;color:var(--diagram-ink)}.foundation-diagrams_diagram__3U8bx th{background:#e8f0ec}.foundation-diagrams_track__k5mGa{height:18px;background:#e4ede8;border-radius:4px;overflow:hidden}.foundation-diagrams_track__k5mGa>div{height:100%;background:var(--diagram-accent);transition:width .18s,margin-left .18s}.foundation-diagrams_track__k5mGa>.foundation-diagrams_propagation__GpwH0{background:#c2913c}.foundation-diagrams_scale__x7UTW{display:flex;justify-content:space-between;font-size:12px;color:#53676a}.foundation-diagrams_timeline__ZTg2S>div:not(.foundation-diagrams_track__k5mGa):not(.foundation-diagrams_scale__x7UTW){margin-top:10px;font-size:13px}.foundation-diagrams_choices__9p71H{display:flex;flex-wrap:wrap;gap:8px}.foundation-diagrams_choices__9p71H button{font:inherit;font-size:14px;border:1px solid var(--diagram-line);background:#fff;color:var(--diagram-ink);padding:5px 12px;border-radius:6px;cursor:pointer}.foundation-diagrams_choices__9p71H button[aria-pressed=true]{background:var(--diagram-accent);color:white}.foundation-diagrams_choices__9p71H button:disabled{opacity:.45;cursor:default}.foundation-diagrams_choices__9p71H button:focus-visible{outline:3px solid #ad7124;outline-offset:2px}.foundation-diagrams_address__LMf12{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;padding:12px;background:#e8f0ec;border-radius:6px}.foundation-diagrams_selected__Mc4_e td{background:#cde9dd;font-weight:700}@media(max-width:600px){.foundation-diagrams_diagram__3U8bx{padding:16px;font-size:14px}.foundation-diagrams_diagram__3U8bx label{grid-template-columns:1fr;gap:4px}.foundation-diagrams_diagram__3U8bx figcaption{font-size:16px}.foundation-diagrams_diagram__3U8bx td,.foundation-diagrams_diagram__3U8bx th{padding:5px 8px}}@media(prefers-reduced-motion:reduce){.foundation-diagrams_track__k5mGa>div{transition:none}}.foundation-diagrams_packet___lQg4{margin-top:18px;border:2px solid #829ca4;border-radius:8px;overflow:hidden;background:#ecf2f4}.foundation-diagrams_hop__nm6JL{padding:8px 14px;font-size:14px}.foundation-diagrams_ip__ybysz{margin:0 12px;padding:12px;border:2px solid #498a77;border-radius:6px;background:#dfefe7}.foundation-diagrams_segment__KIbhI{margin-top:10px;padding:10px;border:1px solid #b49a52;border-radius:4px;background:#f5efd9}.foundation-diagrams_payload__YiH_T{margin-top:8px;padding:8px;background:white;border-radius:3px;text-align:center}.chapter-detail_layout__YR_EM{min-width:0;display:grid;grid-template-columns:220px minmax(0,1fr);align-items:start;grid-gap:0;gap:0}.chapter-detail_practiceArea__8i5rU{min-width:0;padding:12px}.chapter-detail_studySidebar__gVdxM{position:-webkit-sticky;position:sticky;top:56px;max-height:calc(100dvh - 64px);overflow-y:auto;min-width:0;border-right:1px solid var(--line);background:var(--surface)}.chapter-detail_studySidebar__gVdxM .chapter-detail_sectionNav__9rwhS{position:static;max-height:none;border:0}.chapter-detail_studySidebar__gVdxM .chapter-detail_composition__YpKFC{margin:0;padding:14px 12px;border:0;border-top:1px solid var(--line);border-radius:0}.chapter-detail_studySidebar__gVdxM .chapter-detail_compositionGrid__wW1O5{grid-template-columns:minmax(0,1fr)}.chapter-detail_studySidebar__gVdxM .chapter-detail_compositionItem__xcDnQ{padding:7px 10px}.chapter-detail_progress__e5xJr{display:grid;align-content:start;grid-gap:10px;gap:10px;padding:16px 12px;border-top:1px solid var(--line)}.chapter-detail_questionSidebar__YykW2{overflow:hidden}.chapter-detail_questionSidebar__YykW2 .exam-toc{min-height:0;display:flex;flex:1 1 auto;flex-direction:column}.chapter-detail_questionSidebar__YykW2 .exam-toc-list{min-height:0;max-height:none;flex:1 1 auto}.chapter-detail_sectionNav__9rwhS{min-width:0;position:-webkit-sticky;position:sticky;top:56px;max-height:calc(100vh - 64px);padding:12px;overflow-y:auto;border:1px solid var(--line);border-radius:0;background:var(--surface)}.chapter-detail_sectionNavHeading__stfEe{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:10px}.chapter-detail_sectionNavHeading__stfEe h2{margin:0;font-size:.95rem}.chapter-detail_sectionNavHeading__stfEe span{color:var(--muted);font-size:.75rem}.chapter-detail_sectionList__mm16_{display:flex;flex-direction:column;gap:4px}.chapter-detail_sectionButton__IbuCc{width:100%;min-width:0;min-height:48px;display:grid;grid-template-columns:42px minmax(0,1fr) auto;align-items:center;grid-gap:8px;gap:8px;padding:8px 9px;border:1px solid transparent;border-radius:7px;background:transparent;color:var(--muted);text-align:left;cursor:pointer}.chapter-detail_sectionButton__IbuCc:hover{border-color:var(--line);background:var(--surface-2);color:var(--text)}.chapter-detail_sectionButton__IbuCc:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.chapter-detail_sectionButtonActive__Jyqdl{border-color:var(--accent);background:var(--accent-soft);color:var(--text)}.chapter-detail_sectionNumber__UQR5F{color:var(--accent);font-size:.78rem;font-weight:750}.chapter-detail_sectionTitle__mWqlx{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.82rem}.chapter-detail_sectionBadge__HJ6RP{min-width:26px;padding:2px 7px;border-radius:999px;background:var(--surface-3);color:var(--muted);font-size:.72rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums;text-align:center}.chapter-detail_sectionButtonActive__Jyqdl .chapter-detail_sectionBadge__HJ6RP{background:var(--accent);color:var(--surface)}.chapter-detail_sectionHeading__X8uMY{min-width:0;display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:16px;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.chapter-detail_sectionHeading__X8uMY h2{margin:2px 0 0;overflow-wrap:anywhere;font-size:1.05rem}.chapter-detail_sectionEyebrow__N7l9O{color:var(--muted);font-size:.72rem}.chapter-detail_sectionCount__8dyS6{flex:0 0 auto;color:var(--accent);font-size:.82rem;font-weight:700}.chapter-detail_composition__YpKFC{min-width:0;margin-bottom:16px;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.chapter-detail_compositionHeading__EfV9E{min-width:0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 16px;margin-bottom:12px}.chapter-detail_compositionHeading__EfV9E h2{margin:2px 0 0;font-size:1rem}.chapter-detail_compositionHeading__EfV9E>span{max-width:100%;color:var(--muted);font-size:.76rem;overflow-wrap:anywhere}.chapter-detail_compositionGrid__wW1O5{min-width:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,150px),1fr));grid-gap:8px;gap:8px}.chapter-detail_compositionItem__xcDnQ{border:1px solid transparent;text-align:left;font:inherit;cursor:pointer;min-width:0;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:baseline;grid-gap:4px 10px;gap:4px 10px;padding:11px 12px;border-radius:7px;background:var(--surface-2)}.chapter-detail_compositionItem__xcDnQ>span{min-width:0;color:var(--muted);font-size:.78rem}.chapter-detail_compositionItem__xcDnQ:focus-visible,.chapter-detail_compositionItem__xcDnQ:hover,.chapter-detail_compositionItem__xcDnQ[aria-pressed=true]{border-color:var(--text)}.chapter-detail_compositionItem__xcDnQ strong{color:var(--text);font-size:1.15rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.chapter-detail_compositionItem__xcDnQ small{min-width:0;grid-column:1/-1;color:var(--muted);font-size:.72rem;line-height:1.4;overflow-wrap:anywhere}.chapter-detail_chapterQuestionsHeading__NWigx{min-width:0;display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:4px 12px;margin-bottom:16px}.chapter-detail_chapterQuestionsHeading__NWigx h2,.chapter-detail_chapterQuestionsHeading__NWigx p{margin:0}.chapter-detail_chapterQuestionsHeading__NWigx p{max-width:100%;color:var(--muted);font-size:.76rem;overflow-wrap:anywhere}.chapter-detail_questionGroups__VTkiQ{min-width:0;display:grid;grid-gap:24px;gap:24px}.chapter-detail_questionGroup__RIkmf{min-width:0}.chapter-detail_questionGroup__RIkmf+.chapter-detail_questionGroup__RIkmf{padding-top:20px;border-top:1px solid var(--line)}.chapter-detail_questionGroupHeading__FpWRz,.chapter-detail_relatedExamGroupHeading__EEBvB{min-width:0;display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:6px 12px;margin-bottom:10px}.chapter-detail_questionGroupHeading__FpWRz h3,.chapter-detail_relatedExamGroupHeading__EEBvB h3{min-width:0;margin:0;color:var(--text);font-size:.92rem;overflow-wrap:anywhere}.chapter-detail_questionGroupHeading__FpWRz span,.chapter-detail_relatedExamGroupHeading__EEBvB span{flex:0 0 auto;color:var(--muted);font-size:.75rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.chapter-detail_pagination__DFNFk{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line)}.chapter-detail_pagination__DFNFk span{color:var(--muted);font-size:.82rem;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.chapter-detail_relatedExams__Y0Xli{min-width:0;margin-top:18px;padding:16px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.chapter-detail_relatedExamsHeading__N19GP{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}.chapter-detail_relatedExamsHeading__N19GP h2{margin:2px 0 0;font-size:1rem}.chapter-detail_relatedExamsHeading__N19GP>span,.chapter-detail_relatedExamsStatus__qMK3F{color:var(--muted);font-size:.8rem}.chapter-detail_relatedExamsError__31UNK,.chapter-detail_relatedExamsScope__C2TQg,.chapter-detail_relatedExamsStatus__qMK3F{margin:0}.chapter-detail_relatedExamsScope__C2TQg{margin-bottom:12px;color:var(--muted);font-size:.76rem;overflow-wrap:anywhere}.chapter-detail_relatedExamsError__31UNK{color:var(--danger);font-size:.8rem}.chapter-detail_relatedExamList__N4CUX{min-width:0;display:flex;flex-wrap:wrap;gap:8px}.chapter-detail_relatedExamGroups__Hhzd3{min-width:0;display:grid;grid-gap:18px;gap:18px}.chapter-detail_relatedExamGroup__Oigb2{min-width:0}.chapter-detail_relatedExamGroup__Oigb2+.chapter-detail_relatedExamGroup__Oigb2{padding-top:14px;border-top:1px solid var(--line)}.chapter-detail_relatedExamLink__LBxXv{min-width:0;max-width:100%;display:inline-grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:8px;min-height:38px;padding:7px 10px;border:1px solid var(--line);border-radius:7px;background:var(--surface-2);color:var(--text);text-decoration:none}.chapter-detail_relatedExamLink__LBxXv:hover{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);text-decoration:none}.chapter-detail_relatedExamLink__LBxXv:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.chapter-detail_relatedExamYear__tsCKe{color:var(--accent);font-size:.75rem;font-weight:750;white-space:nowrap}.chapter-detail_relatedExamTitle__6LrjR{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.8rem}.chapter-detail_relatedExamArrow__st4o1{color:var(--muted);font-size:.8rem}@media (max-width:1100px){.chapter-detail_studySidebar__gVdxM{position:static;max-height:none;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);border-right:0}.chapter-detail_studySidebar__gVdxM .chapter-detail_sectionNav__9rwhS{grid-column:1/-1}.chapter-detail_studySidebar__gVdxM .chapter-detail_compositionGrid__wW1O5{grid-template-columns:repeat(auto-fit,minmax(100px,1fr))}.chapter-detail_layout__YR_EM{grid-template-columns:minmax(0,1fr)}.chapter-detail_sectionNav__9rwhS{position:static;max-width:100%;max-height:none;overflow:hidden}.chapter-detail_sectionList__mm16_{flex-direction:row;max-width:100%;padding-bottom:4px;overflow-x:auto;overscroll-behavior-inline:contain}.chapter-detail_sectionButton__IbuCc{flex:0 0 220px}}@media (max-width:900px){.chapter-detail_questionSidebar__YykW2{overflow:visible}.chapter-detail_questionSidebar__YykW2 .exam-toc{display:block}}@media (max-width:640px){.chapter-detail_sectionNav__9rwhS{padding:12px}.chapter-detail_sectionButton__IbuCc{flex-basis:190px;min-height:44px;grid-template-columns:38px minmax(0,1fr) auto}.chapter-detail_sectionHeading__X8uMY{align-items:flex-start;padding:12px}.chapter-detail_composition__YpKFC{padding:12px}.chapter-detail_compositionGrid__wW1O5{grid-template-columns:minmax(0,1fr)}.chapter-detail_chapterQuestionsHeading__NWigx,.chapter-detail_compositionHeading__EfV9E,.chapter-detail_questionGroupHeading__FpWRz,.chapter-detail_relatedExamGroupHeading__EEBvB{align-items:flex-start}.chapter-detail_pagination__DFNFk{gap:8px}.chapter-detail_pagination__DFNFk span{flex-basis:100%;order:-1;text-align:center}.chapter-detail_relatedExams__Y0Xli{padding:14px 12px}.chapter-detail_relatedExamList__N4CUX{flex-direction:column}.chapter-detail_relatedExamLink__LBxXv{width:100%}}.exam-detail_scoringNote__3z3qE{display:block;margin-top:.25rem;font-size:.8rem}.exam-detail_detailLayoutWithYears__ZzVd1{grid-template-columns:100px minmax(0,1fr) 240px}.exam-detail_yearSidebar__unsl9{position:-webkit-sticky;position:sticky;top:56px;padding:12px 8px;border:1px solid var(--line);border-radius:0;background:var(--surface-2)}.exam-detail_yearSidebar__unsl9 h2{margin:0 0 10px;color:var(--text);font-size:.9rem;text-align:center}.exam-detail_yearList__Melu8{display:flex;flex-direction:column;gap:4px;max-height:calc(100vh - 140px);overflow-y:auto}.exam-detail_yearLink__ixFfi{display:flex;align-items:center;justify-content:center;min-height:34px;padding:5px 8px;border-radius:6px;color:var(--subtle);font-size:.85rem;font-weight:700;text-decoration:none}.exam-detail_yearLink__ixFfi:hover{color:var(--accent);background:var(--surface-3)}.exam-detail_activeYear__3_JMa{color:var(--accent);background:var(--accent-soft)}.exam-detail_questionList__KHtXi>.question-practice{position:relative;padding:12px;border:1px solid var(--line-strong);border-radius:0;background:var(--surface-2);box-shadow:0 1px 0 color-mix(in srgb,var(--line-strong) 55%,transparent)}.exam-detail_questionList__KHtXi>.question-practice+.question-practice{margin-top:.25rem}.exam-detail_questionList__KHtXi .exam-question-head h3{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.exam-detail_questionList__KHtXi .exam-question-title{margin:0;color:var(--text);font-size:1rem;font-weight:700;line-height:1.5}.exam-detail_questionList__KHtXi .answer-panel{margin-bottom:0;padding-bottom:.25rem}.exam-detail_sidebar__TNqJ9{position:-webkit-sticky;position:sticky;top:56px;height:calc(100vh - 64px);min-height:420px;overflow:hidden}.exam-detail_examInfo___W0fQ{flex:0 0 auto;padding-bottom:14px;border-bottom:1px solid var(--line)}.exam-detail_examInfo___W0fQ h2{margin:0 0 12px;font-size:.95rem}.exam-detail_sidebar__TNqJ9 .exam-toc{min-height:0;display:flex;flex:1 1 auto;flex-direction:column}.exam-detail_sidebar__TNqJ9 .exam-toc-list{min-height:0;max-height:none;flex:1 1 auto}@media (max-width:900px){.exam-detail_detailLayoutWithYears__ZzVd1{grid-template-columns:1fr}.exam-detail_yearSidebar__unsl9{position:static;padding:12px}.exam-detail_yearSidebar__unsl9 h2{text-align:left}.exam-detail_yearList__Melu8{flex-direction:row;max-height:none;overflow-x:auto;overflow-y:hidden;padding-bottom:4px}.exam-detail_yearLink__ixFfi{flex:0 0 auto;min-width:64px}.exam-detail_sidebar__TNqJ9{position:static;height:auto;min-height:0;overflow:visible}.exam-detail_sidebar__TNqJ9 .exam-toc{display:block}}@media (max-width:640px){.exam-detail_questionList__KHtXi>.question-practice{padding:12px}}.knowledge-detail_breadcrumb__uKHiT{min-width:0;flex-wrap:wrap;row-gap:6px}.knowledge-detail_articleHeader__z_Wmc{align-items:center;gap:16px;margin-bottom:16px}.knowledge-detail_articleHeader__z_Wmc h1{margin:0;font-size:clamp(1.45rem,2.3vw,2rem)}.knowledge-detail_articleHeader__z_Wmc .page-actions{gap:8px}.knowledge-detail_breadcrumb__uKHiT a,.knowledge-detail_breadcrumb__uKHiT span{min-width:0;max-width:100%;overflow-wrap:anywhere}.knowledge-detail_current__vA3XT{color:var(--text)}.knowledge-detail_readingLayout__fKCLg{min-width:0;display:grid;grid-template-columns:240px minmax(0,1fr);align-items:start;grid-gap:0;gap:0}.knowledge-detail_articleColumn__BqnOq{min-width:0;display:grid;grid-gap:16px;gap:16px}.knowledge-detail_chapterNav__bw8yO{min-width:0;position:-webkit-sticky;position:sticky;top:56px;max-height:calc(100vh - 64px);padding:12px;overflow-y:auto;border:1px solid var(--line);border-radius:0;background:var(--surface)}.knowledge-detail_chapterNavHeading__n8Rn8{display:block;margin-bottom:10px;padding:0 4px 10px;border-bottom:1px solid var(--line);color:var(--text);font-size:.88rem;font-weight:750;overflow-wrap:anywhere}.knowledge-detail_articleHeadingList__FyN83,.knowledge-detail_chapterArticleList__TF4mh{display:grid;grid-gap:2px;gap:2px;margin:0;padding:0;list-style:none}.knowledge-detail_chapterSectionGroups__mEDs5{min-width:0;display:grid;grid-gap:10px;gap:10px}.knowledge-detail_chapterSectionGroup__sGUCh{min-width:0}.knowledge-detail_chapterSectionGroup__sGUCh+.knowledge-detail_chapterSectionGroup__sGUCh{padding-top:9px;border-top:1px solid var(--line)}.knowledge-detail_chapterSectionGroup__sGUCh>h3{margin:0 4px 4px;color:var(--muted);font-size:.72rem;line-height:1.4;overflow-wrap:anywhere}.knowledge-detail_chapterSectionNode__6Sppx{min-width:0}.knowledge-detail_chapterSectionNode__6Sppx>h3{display:flex;align-items:baseline;gap:6px;margin:0 4px 4px;color:var(--muted);font-size:.72rem;line-height:1.4;overflow-wrap:anywhere}.knowledge-detail_chapterSectionNode__6Sppx>h3 span{flex:0 0 auto;color:var(--accent);font-family:ui-monospace,Cascadia Code,Consolas,monospace}.knowledge-detail_sectionPracticeLink__gmfdw{display:block;margin:0 4px 4px;padding:5px 8px;border-radius:5px;background:var(--surface-2);color:var(--accent);font-size:.75rem;font-weight:700}.knowledge-detail_sectionPracticeLink__gmfdw:hover{background:var(--accent-soft);text-decoration:none}.knowledge-detail_chapterSectionChildren__38Hmv{min-width:0;display:grid;grid-gap:7px;gap:7px;margin:6px 0 2px 8px;padding-left:8px;border-left:1px solid var(--line)}.knowledge-detail_chapterArticleLink__nI1Up{display:block;min-width:0;padding:7px 8px;border-radius:6px;color:var(--muted);font-size:.8rem;line-height:1.4;overflow-wrap:anywhere}.knowledge-detail_chapterArticleLink__nI1Up:hover,.knowledge-detail_currentArticle__AYakH{background:var(--accent-soft);color:var(--accent);text-decoration:none}.knowledge-detail_currentArticle__AYakH{font-weight:750}.knowledge-detail_articleHeadingList__FyN83{margin:3px 0 7px 10px;padding-left:8px;border-left:1px solid var(--line)}.knowledge-detail_articleHeadingList__FyN83 button{width:100%;min-width:0;padding:5px 7px;border:0;border-radius:5px;background:transparent;color:var(--muted);text-align:left;font-size:.75rem;line-height:1.35;overflow-wrap:anywhere;cursor:pointer}.knowledge-detail_articleHeadingList__FyN83 .knowledge-detail_activeHeading__jwPeD,.knowledge-detail_articleHeadingList__FyN83 button:hover{background:var(--surface-2);color:var(--accent)}.knowledge-detail_headingLevel3__b59yR{padding-left:6px}.knowledge-detail_headingLevel4__7CrVJ{padding-left:14px}.knowledge-detail_navigationError__i5FMM,.knowledge-detail_navigationStatus__3OifM{margin:0 4px 8px;font-size:.74rem}.knowledge-detail_navigationStatus__3OifM{color:var(--muted)}.knowledge-detail_navigationError__i5FMM{color:var(--danger)}.knowledge-detail_mobileChapterNav____S8Y{display:none;min-width:0;margin-bottom:16px;border:1px solid var(--line);border-radius:8px;background:var(--surface);overflow:hidden}.knowledge-detail_mobileChapterNav____S8Y summary{min-height:44px;display:flex;align-items:center;padding:10px 12px;color:var(--text);font-weight:700;cursor:pointer}.knowledge-detail_mobileChapterNav____S8Y>div{max-height:60vh;padding:0 12px 12px;overflow-y:auto}.knowledge-detail_sequenceNav__Rpq9S{min-width:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px}.knowledge-detail_sequenceNav__Rpq9S a{min-width:0;display:grid;grid-gap:3px;gap:3px;padding:12px 14px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--text)}.knowledge-detail_sequenceNav__Rpq9S a:last-child{text-align:right}.knowledge-detail_sequenceNav__Rpq9S a:hover{border-color:var(--accent);color:var(--accent);text-decoration:none}.knowledge-detail_sequenceNav__Rpq9S span{color:var(--muted);font-size:.74rem}.knowledge-detail_sequenceNav__Rpq9S strong{min-width:0;font-size:.84rem;overflow-wrap:anywhere}@media (max-width:900px){.knowledge-detail_readingLayout__fKCLg{grid-template-columns:minmax(0,1fr)}.knowledge-detail_chapterNav__bw8yO{display:none}.knowledge-detail_mobileChapterNav____S8Y{display:block}}@media (max-width:640px){.knowledge-detail_sequenceNav__Rpq9S{grid-template-columns:minmax(0,1fr)}.knowledge-detail_sequenceNav__Rpq9S>span{display:none}.knowledge-detail_sequenceNav__Rpq9S a:last-child{text-align:left}}.knowledge-teaching_root__PsqKb{--paper:#f7f6f2;--surface:#fff;--ink:#203337;--accent:#176b65;--line:#dfe5df;position:fixed;inset:0;z-index:100;background:var(--paper);color:var(--ink);padding:16px 28px 12px;display:flex;flex-direction:column;font-family:Segoe UI,Microsoft YaHei,sans-serif;line-height:1.65}.knowledge-teaching_root__PsqKb *{box-sizing:border-box}.knowledge-teaching_root__PsqKb button{font:inherit;cursor:pointer;color:inherit;background:var(--surface);border:1px solid var(--line);border-radius:6px;padding:7px 12px}.knowledge-teaching_root__PsqKb button:disabled{opacity:.35;cursor:default}.knowledge-teaching_root__PsqKb a:focus-visible,.knowledge-teaching_root__PsqKb button:focus-visible{outline:3px solid #ad7124;outline-offset:3px}.knowledge-teaching_root__PsqKb a{color:var(--accent);text-decoration:none}.knowledge-teaching_root__PsqKb a:hover{text-decoration:underline}.knowledge-teaching_header__f1vaj{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-bottom:14px;border-bottom:1px solid var(--line)}.knowledge-teaching_header__f1vaj>div{display:flex;align-items:baseline;gap:18px;min-width:0}.knowledge-teaching_header__f1vaj small{color:var(--accent);font-size:12px}.knowledge-teaching_header__f1vaj strong{font-size:17px}.knowledge-teaching_header__f1vaj nav{display:flex;gap:8px;white-space:nowrap;font-size:13px}.knowledge-teaching_layout__VjDn5{display:grid;grid-template-columns:195px minmax(0,1fr);grid-gap:24px;gap:24px;min-height:0;flex:1 1;padding-top:18px}.knowledge-teaching_sidebar__PGMp5{overflow-y:auto;scrollbar-width:thin;min-width:0;padding-right:12px;border-right:1px solid var(--line)}.knowledge-teaching_sidebar__PGMp5 button{display:flex;width:100%;gap:10px;text-align:left;border:0;background:transparent;padding:9px 8px;font-size:13px}.knowledge-teaching_sidebar__PGMp5 button[aria-current=page]{background:#e9f2ed;color:var(--accent);font-weight:700;border-left:3px solid var(--accent)}.knowledge-teaching_sidebar__PGMp5 small{font-size:10px;color:var(--accent);padding-top:3px}.knowledge-teaching_sidebar__PGMp5 span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}.knowledge-teaching_main__iYliP{display:flex;flex-direction:column;min-height:0;min-width:0}.knowledge-teaching_paper__Zx2eB{display:flex;flex-direction:column;flex:1 1;min-height:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 32px #20333708}.knowledge-teaching_scroll__eUYEv{overflow:auto;scrollbar-width:thin;flex:1 1;min-height:0;padding:30px clamp(24px,4vw,64px)}.knowledge-teaching_slideHeader__1i0_N{border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:24px}.knowledge-teaching_slideHeader__1i0_N small{font-size:12px;color:var(--accent)}.knowledge-teaching_slideHeader__1i0_N h1{font-size:clamp(26px,2.6vw,42px);line-height:1.35;margin:10px 0 0;font-weight:700}.knowledge-teaching_body__Dl0du{font-size:clamp(17px,1.45vw,23px);line-height:1.85;overflow-wrap:anywhere;color:var(--ink)}.knowledge-teaching_body__Dl0du p{margin:0 0 18px}.knowledge-teaching_body__Dl0du table{font-size:.85em;color:var(--ink)}.knowledge-teaching_body__Dl0du th{background:#e9f2ed;color:var(--accent)}.knowledge-teaching_body__Dl0du td,.knowledge-teaching_body__Dl0du th{border-color:var(--line)}.knowledge-teaching_body__Dl0du pre{font-size:.78em;line-height:1.65;max-height:none;background:#f2f5f3;color:var(--ink)}.knowledge-teaching_body__Dl0du img{max-height:58dvh;object-fit:contain}.knowledge-teaching_body__Dl0du .katex-display{overflow-x:auto;overflow-y:hidden;padding:4px 0}.knowledge-teaching_body__Dl0du figure{max-width:670px;margin:24px auto}.knowledge-teaching_links__nziPT{display:flex;align-items:center;gap:24px;border-top:1px solid var(--line);margin:0 32px;padding:10px 0 14px;font-size:13px}.knowledge-teaching_links__nziPT button{padding:0;border:0;background:none;color:var(--accent)}.knowledge-teaching_footer__qsrm3{display:flex;align-items:center;gap:16px;padding:12px 58px 0 0;font-size:13px}.knowledge-teaching_footer__qsrm3 progress{height:4px;flex:1 1;accent-color:var(--accent)}.knowledge-teaching_footer__qsrm3 span{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;min-width:48px;text-align:center}.knowledge-teaching_footer__qsrm3 button:last-child{background:var(--accent);color:white;border-color:var(--accent)}.knowledge-teaching_header__f1vaj .knowledge-teaching_menuToggle__4hm_k{display:none}.knowledge-teaching_fullscreenMessage___8jix{margin:6px 0 0;font-size:13px;color:var(--accent)}@media(max-width:900px){.knowledge-teaching_layout__VjDn5{grid-template-columns:160px minmax(0,1fr);gap:14px}.knowledge-teaching_root__PsqKb{padding:12px 16px}.knowledge-teaching_scroll__eUYEv{padding:24px}.knowledge-teaching_body__Dl0du{font-size:17px}}@media(max-width:640px){.knowledge-teaching_header__f1vaj nav button:first-child{display:block}.knowledge-teaching_root__PsqKb{padding:10px 12px}.knowledge-teaching_header__f1vaj>div{display:block}.knowledge-teaching_header__f1vaj strong{display:block;font-size:14px}.knowledge-teaching_header__f1vaj small{font-size:10px}.knowledge-teaching_header__f1vaj nav{font-size:12px;gap:5px}.knowledge-teaching_header__f1vaj button{padding:5px 7px}.knowledge-teaching_layout__VjDn5{display:block;padding-top:12px;position:relative}.knowledge-teaching_sidebar__PGMp5{display:none;position:absolute;inset:0;z-index:3;background:var(--paper);padding:15px;border:1px solid var(--line);border-radius:8px}.knowledge-teaching_sidebar__PGMp5.knowledge-teaching_open__NIWMn{display:block}.knowledge-teaching_main__iYliP{height:100%}.knowledge-teaching_scroll__eUYEv{padding:20px 18px}.knowledge-teaching_slideHeader__1i0_N h1{font-size:25px}.knowledge-teaching_body__Dl0du{font-size:16px}.knowledge-teaching_links__nziPT{margin:0 18px;font-size:12px}.knowledge-teaching_footer__qsrm3{padding-right:44px;gap:6px;font-size:12px}.knowledge-teaching_footer__qsrm3 button{padding:6px 8px}.knowledge-teaching_footer__qsrm3 progress{display:none}.knowledge-teaching_footer__qsrm3 span{flex:1 1}.knowledge-teaching_body__Dl0du table{font-size:13px}}.knowledge-teaching_footer__qsrm3{padding-right:110px}@media(max-width:640px){.knowledge-teaching_footer__qsrm3{padding-right:100px}}.guide_shell__JGFIl{max-width:1440px;width:100%;margin:0 auto;padding:24px clamp(16px,3vw,48px) 72px;color:var(--text)}.guide_entry__iIYAB a:focus-visible,.guide_shell__JGFIl a:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:4px}.guide_marchCurve__zzswj{color:var(--accent)}.guide_editNotice__Qy6Pd{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:80;max-width:calc(100vw - 32px);padding:12px 18px;border:1px solid var(--line);border-radius:10px;background:var(--surface);box-shadow:0 4px 20px #0002;display:flex;gap:16px;align-items:center}.guide_juneCurve__ANpzt{color:var(--warning)}.guide_pageNav__MNucH{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}.guide_pageNav__MNucH a{padding:8px 12px;border:1px solid var(--line);border-radius:999px;font-size:.88rem;color:var(--muted)}.guide_pageNav__MNucH a[aria-current=page]{color:var(--text);border-color:var(--accent);background:var(--accent-soft)}.guide_hero__pAlkg{padding:26px 0 30px;border-bottom:1px solid var(--line)}.guide_hero__pAlkg h1{max-width:940px;font-size:clamp(1.9rem,4vw,3rem);line-height:1.3;margin:10px 0 18px;letter-spacing:-.035em}.guide_hero__pAlkg p{max-width:800px;color:var(--muted);font-size:1.02rem}.guide_article__cWSUK img{display:block;max-width:100%;height:auto;background:#fff;border-radius:6px}.guide_hero__pAlkg .guide_eyebrow__DfaIP{color:var(--accent);font-size:.8rem;font-weight:750;letter-spacing:.12em}.guide_layout__YKD63{display:grid;grid-template-columns:216px minmax(0,1fr);grid-gap:36px;gap:36px;margin-top:32px;align-items:start}.guide_toc__fNDpm{position:-webkit-sticky;position:sticky;top:82px;max-height:calc(100vh - 104px);overflow-y:auto;font-size:.84rem;line-height:1.7}.guide_toc__fNDpm a,.guide_toc__fNDpm strong{display:block;padding:8px 10px}.guide_toc__fNDpm a{color:var(--muted);border-left:2px solid var(--line)}.guide_toc__fNDpm a:hover{color:var(--accent);border-left-color:var(--accent)}.guide_article__cWSUK{min-width:0;font-size:1rem;line-height:1.9}.guide_article__cWSUK p{margin:0 0 1.15em}.guide_article__cWSUK a{overflow-wrap:anywhere}.guide_article__cWSUK h2{font-size:1.45rem;line-height:1.45;margin:0 0 18px}.guide_article__cWSUK h3{font-size:1.1rem;line-height:1.5;margin:28px 0 12px}.guide_article__cWSUK strong{font-weight:750}.guide_lead__8PIbj{padding:22px 24px;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;background:var(--surface)}.guide_lead__8PIbj p:last-child{margin-bottom:0}.guide_section__F7v6x{scroll-margin-top:88px;padding-top:34px;margin-top:10px;border-top:1px solid var(--line)}.guide_section__F7v6x:first-of-type{margin-top:32px}.guide_article__cWSUK code{font-size:.88em;padding:2px 5px;background:var(--surface-2);border-radius:4px;white-space:normal;overflow-wrap:anywhere}.guide_article__cWSUK pre{overflow:auto;padding:16px;background:var(--surface-2);border-radius:8px}.guide_tableScroll__GB6CZ{width:100%;overflow-x:auto;margin:20px 0;border:1px solid var(--line);border-radius:8px}.guide_tableScroll__GB6CZ:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.guide_tableScroll__GB6CZ table{width:100%;border-collapse:collapse;font-size:.9rem;line-height:1.7}.guide_tableScroll__GB6CZ td,.guide_tableScroll__GB6CZ th{text-align:left;vertical-align:top;padding:12px 14px;border-bottom:1px solid var(--line);min-width:115px}.guide_tableScroll__GB6CZ th{background:var(--surface-2);font-weight:700}.guide_tableScroll__GB6CZ tr:last-child td{border-bottom:0}.guide_examCard__o1Hho{margin-top:28px;padding:24px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.guide_statGrid__pmMYL{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:20px;gap:20px}.guide_statGrid__pmMYL strong{display:block;font-size:clamp(1.5rem,3vw,2.35rem);line-height:1.3;letter-spacing:-.04em}.guide_statGrid__pmMYL span{color:var(--muted);font-size:.82rem}.guide_subjectWeights__sqbgu{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:20px;gap:20px;padding-top:24px}.guide_subjectWeights__sqbgu div{display:grid;grid-template-columns:1fr auto;grid-gap:10px 4px;gap:10px 4px;align-items:center;font-size:.83rem}.guide_subjectWeights__sqbgu progress{grid-column:1/-1;width:100%;height:7px;accent-color:var(--accent)}.guide_small___itb3{color:var(--muted);font-size:.77rem;margin:18px 0 0}.guide_curve__sjTdm{margin:20px 0 24px;padding:18px;border:1px solid var(--line);background:var(--surface);border-radius:10px}.guide_curve__sjTdm figcaption strong{display:block;font-size:1rem}.guide_curve__sjTdm figcaption span{display:block;color:var(--muted);font-size:.8rem}.guide_curve__sjTdm svg{display:block;width:100%;height:auto;margin-top:12px;overflow:visible}.guide_curveViewport__MT_be{overflow-x:auto}.guide_curveViewport__MT_be:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.guide_curveViewport__MT_be svg{min-width:620px}.guide_curveHint__sv8_b{display:none;font-size:.8rem;color:var(--muted)}@media(max-width:700px){.guide_curveHint__sv8_b{display:block}}.guide_curve__sjTdm p{font-size:.79rem;color:var(--muted);margin-bottom:0}.guide_articleFooter__OtFtd{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-top:32px;margin-top:32px;border-top:1px solid var(--line)}.guide_entry__iIYAB{display:flex;align-items:center;flex-wrap:wrap;gap:16px;width:calc(100% - 32px);max-width:1344px;margin:20px auto 0;padding:18px 22px;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:8px;background:var(--surface)}.guide_entry__iIYAB div{flex:1 1 300px}.guide_entry__iIYAB p{margin:5px 0 0;font-size:.85rem;color:var(--muted)}.guide_entry__iIYAB a{font-size:.9rem;white-space:nowrap}@media(max-width:850px){.guide_layout__YKD63{grid-template-columns:minmax(0,1fr);gap:20px}.guide_toc__fNDpm{position:static;max-height:none;display:flex;flex-wrap:wrap;gap:4px 10px}.guide_toc__fNDpm strong{width:100%}.guide_toc__fNDpm a{font-size:.8rem;padding:4px 8px}.guide_subjectWeights__sqbgu{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:560px){.guide_shell__JGFIl{padding:16px 16px 48px}.guide_pageNav__MNucH{gap:6px}.guide_pageNav__MNucH a{padding:6px 10px;font-size:.78rem}.guide_statGrid__pmMYL{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}.guide_hero__pAlkg{padding-top:12px}.guide_lead__8PIbj{padding:18px}.guide_article__cWSUK{font-size:.96rem}.guide_article__cWSUK h2{font-size:1.25rem}.guide_curve__sjTdm{padding:12px}.guide_entry__iIYAB{margin:16px 16px 0}}@media print{.guide_pageNav__MNucH,.guide_toc__fNDpm{display:none}.guide_layout__YKD63{display:block}.guide_shell__JGFIl{max-width:none;color:#000}.guide_tableScroll__GB6CZ{overflow:visible}.guide_hero__pAlkg,.guide_section__F7v6x{page-break-inside:auto;break-inside:auto}.guide_section__F7v6x h2{page-break-after:avoid;break-after:avoid}}