@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-ext-wght-normal.BOeWTOD4.woff2)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-wght-normal.DqGufNeO.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-ext-wght-normal.DlzME5K_.woff2)format("woff2-variations");unicode-range:U+1F??}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-wght-normal.CkhJZR-_.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-vietnamese-wght-normal.CBcvBZtf.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-ext-wght-normal.DO1Apj_S.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-wght-normal.Dx4kXJAl.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-vietnamese-wght-normal.Czsa-EzN.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-latin-ext-wght-normal.C-3rgBeH.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/_astro/newsreader-latin-wght-normal.CCVVNp6i.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:JetBrains Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/jetbrains-mono-cyrillic-ext-400-normal.C_uLvvQ5.woff2)format("woff2"),url(/_astro/jetbrains-mono-cyrillic-ext-400-normal.Bh0R7Dhr.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:JetBrains Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/jetbrains-mono-cyrillic-400-normal.BEIGL1Tu.woff2)format("woff2"),url(/_astro/jetbrains-mono-cyrillic-400-normal.ugxPyKxw.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:JetBrains Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/jetbrains-mono-greek-400-normal.C190GLew.woff2)format("woff2"),url(/_astro/jetbrains-mono-greek-400-normal.B9oWc5Lo.woff)format("woff");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:JetBrains Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/jetbrains-mono-vietnamese-400-normal.ByoDsISC.woff2)format("woff2"),url(/_astro/jetbrains-mono-vietnamese-400-normal.CqNFfHCs.woff)format("woff");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:JetBrains Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/jetbrains-mono-latin-ext-400-normal.Bc8Ftmh3.woff2)format("woff2"),url(/_astro/jetbrains-mono-latin-ext-400-normal.fXTG6kC5.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:JetBrains Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/jetbrains-mono-latin-400-normal.V6pRDFza.woff2)format("woff2"),url(/_astro/jetbrains-mono-latin-400-normal.6-qcROiO.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Noto Serif TC;font-style:normal;font-display:swap;font-weight:400;src:url(/_astro/noto-serif-tc-chinese-traditional-400-normal.DQpnKpeM.woff2)format("woff2"),url(/_astro/noto-serif-tc-chinese-traditional-400-normal.31mVKpQ_.woff)format("woff")}@font-face{font-family:Noto Serif TC;font-style:normal;font-display:swap;font-weight:600;src:url(/_astro/noto-serif-tc-chinese-traditional-600-normal.C_VIR2m3.woff2)format("woff2"),url(/_astro/noto-serif-tc-chinese-traditional-600-normal.Ct9sBHR6.woff)format("woff")}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_AMS-Regular.BQhdFMY1.woff2)format("woff2"),url(/_astro/KaTeX_AMS-Regular.DMm9YOAa.woff)format("woff"),url(/_astro/KaTeX_AMS-Regular.DRggAlZN.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_Caligraphic-Bold.Dq_IR9rO.woff2)format("woff2"),url(/_astro/KaTeX_Caligraphic-Bold.BEiXGLvX.woff)format("woff"),url(/_astro/KaTeX_Caligraphic-Bold.ATXxdsX0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Caligraphic-Regular.Di6jR-x-.woff2)format("woff2"),url(/_astro/KaTeX_Caligraphic-Regular.CTRA-rTL.woff)format("woff"),url(/_astro/KaTeX_Caligraphic-Regular.wX97UBjC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_Fraktur-Bold.CL6g_b3V.woff2)format("woff2"),url(/_astro/KaTeX_Fraktur-Bold.BsDP51OF.woff)format("woff"),url(/_astro/KaTeX_Fraktur-Bold.BdnERNNW.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Fraktur-Regular.CTYiF6lA.woff2)format("woff2"),url(/_astro/KaTeX_Fraktur-Regular.Dxdc4cR9.woff)format("woff"),url(/_astro/KaTeX_Fraktur-Regular.CB_wures.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_Main-Bold.Cx986IdX.woff2)format("woff2"),url(/_astro/KaTeX_Main-Bold.Jm3AIy58.woff)format("woff"),url(/_astro/KaTeX_Main-Bold.waoOVXN0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/_astro/KaTeX_Main-BoldItalic.DxDJ3AOS.woff2)format("woff2"),url(/_astro/KaTeX_Main-BoldItalic.SpSLRI95.woff)format("woff"),url(/_astro/KaTeX_Main-BoldItalic.DzxPMmG6.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_Main-Italic.NWA7e6Wa.woff2)format("woff2"),url(/_astro/KaTeX_Main-Italic.BMLOBm91.woff)format("woff"),url(/_astro/KaTeX_Main-Italic.3WenGoN9.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Main-Regular.B22Nviop.woff2)format("woff2"),url(/_astro/KaTeX_Main-Regular.Dr94JaBh.woff)format("woff"),url(/_astro/KaTeX_Main-Regular.ypZvNtVU.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/_astro/KaTeX_Math-BoldItalic.CZnvNsCZ.woff2)format("woff2"),url(/_astro/KaTeX_Math-BoldItalic.iY-2wyZ7.woff)format("woff"),url(/_astro/KaTeX_Math-BoldItalic.B3XSjfu4.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_Math-Italic.t53AETM-.woff2)format("woff2"),url(/_astro/KaTeX_Math-Italic.DA0__PXp.woff)format("woff"),url(/_astro/KaTeX_Math-Italic.flOr_0UB.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_SansSerif-Bold.D1sUS0GD.woff2)format("woff2"),url(/_astro/KaTeX_SansSerif-Bold.DbIhKOiC.woff)format("woff"),url(/_astro/KaTeX_SansSerif-Bold.CFMepnvq.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_SansSerif-Italic.C3H0VqGB.woff2)format("woff2"),url(/_astro/KaTeX_SansSerif-Italic.DN2j7dab.woff)format("woff"),url(/_astro/KaTeX_SansSerif-Italic.YYjJ1zSn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_SansSerif-Regular.DDBCnlJ7.woff2)format("woff2"),url(/_astro/KaTeX_SansSerif-Regular.CS6fqUqJ.woff)format("woff"),url(/_astro/KaTeX_SansSerif-Regular.BNo7hRIc.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Script-Regular.D3wIWfF6.woff2)format("woff2"),url(/_astro/KaTeX_Script-Regular.D5yQViql.woff)format("woff"),url(/_astro/KaTeX_Script-Regular.C5JkGWo-.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size1-Regular.mCD8mA8B.woff2)format("woff2"),url(/_astro/KaTeX_Size1-Regular.C195tn64.woff)format("woff"),url(/_astro/KaTeX_Size1-Regular.Dbsnue_I.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size2-Regular.Dy4dx90m.woff2)format("woff2"),url(/_astro/KaTeX_Size2-Regular.oD1tc_U0.woff)format("woff"),url(/_astro/KaTeX_Size2-Regular.B7gKUWhC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size3-Regular.gV2CO0n9.woff2)format("woff2"),url(/_astro/KaTeX_Size3-Regular.CTq5MqoE.woff)format("woff"),url(/_astro/KaTeX_Size3-Regular.DgpXs0kz.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size4-Regular.Dl5lxZxV.woff2)format("woff2"),url(/_astro/KaTeX_Size4-Regular.BF-4gkZK.woff)format("woff"),url(/_astro/KaTeX_Size4-Regular.DWFBv043.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Typewriter-Regular.CO6r4hn1.woff2)format("woff2"),url(/_astro/KaTeX_Typewriter-Regular.C0xS9mPB.woff)format("woff"),url(/_astro/KaTeX_Typewriter-Regular.D3Ib7_Hf.ttf)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.16.47"}.katex .katex-mathml{-webkit-clip-path:inset(50%);clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.newline{display:block}.katex .base{white-space:nowrap;width:min-content;position:relative}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{flex-direction:row;display:inline-flex}.katex .thinbox{width:0;max-width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{width:.12em;display:inline-block}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}:root{color-scheme:light;--canvas:#f5f5f7;--surface:#fff;--surface-soft:#fbfbfd;--text:#1d1d1f;--text-secondary:#616168;--text-tertiary:#68686f;--line:#0000001a;--line-strong:#0000002e;--blue:#0068cf;--blue-soft:#e8f2ff;--focus:#0071e3;--sans:system-ui, "SF Pro Text", "Inter Variable", "PingFang TC", "PingFang HK", "Microsoft JhengHei", sans-serif;--mono:ui-monospace, "SF Mono", Menlo, "JetBrains Mono", Consolas, monospace}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--canvas:#0b0b0d;--surface:#171719;--surface-soft:#202023;--text:#f5f5f7;--text-secondary:#b0b0b7;--text-tertiary:#a0a0a8;--line:#ffffff1f;--line-strong:#ffffff38;--blue:#62adff;--blue-soft:#192e45;--focus:#62adff}}:root[data-theme=dark]{color-scheme:dark;--canvas:#0b0b0d;--surface:#171719;--surface-soft:#202023;--text:#f5f5f7;--text-secondary:#b0b0b7;--text-tertiary:#a0a0a8;--line:#ffffff1f;--line-strong:#ffffff38;--blue:#62adff;--blue-soft:#192e45;--focus:#62adff}:root[data-theme=light]{color-scheme:light}*{box-sizing:border-box}html{font-family:var(--sans);color:var(--text);background:var(--canvas);scroll-behavior:smooth;-webkit-text-size-adjust:100%;scroll-padding-top:2rem}body{min-width:320px;margin:0}::selection{color:#fff;background:#0068cf}a{color:inherit;text-underline-offset:.22em}a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid var(--focus);outline-offset:4px;border-radius:5px}button,input{font:inherit}button,a,summary,input{-webkit-tap-highlight-color:transparent}button,summary{cursor:pointer}svg{display:block}.skip-link{z-index:100;color:#fff;background:#0068cf;border-radius:8px;padding:14px 20px;position:fixed;top:8px;left:8px;transform:translateY(-150%)}.skip-link:focus{transform:none}.math-header,.math-footer,.page{width:min(1120px,100% - 64px);margin-inline:auto}.header-top{justify-content:space-between;align-items:center;gap:12px;min-height:80px;display:flex}.wordmark{min-height:44px;font:650 19px/1 var(--mono);letter-spacing:-.045em;white-space:nowrap;align-items:center;text-decoration:none;display:inline-flex}.wordmark-dot{color:var(--blue)}.header-actions{align-items:center;gap:10px;display:flex}.locale-switch{border:1px solid var(--line);background:var(--surface);border-radius:24px;align-items:center;gap:2px;padding:0 4px;font-size:12px;display:flex}.locale-switch a,.locale-switch span{align-items:center;min-height:44px;padding-inline:10px;text-decoration:none;display:inline-flex}.locale-switch a{color:var(--blue);font-weight:550}.unavailable-locale{color:var(--text-secondary)}.main-nav{border-bottom:1px solid var(--line);justify-content:space-between;gap:16px;font-size:13px;display:flex}.nav-sections{gap:24px;display:flex}.main-nav a{min-height:48px;color:var(--text-secondary);border-bottom:2px solid #0000;align-items:center;gap:8px;text-decoration:none;display:inline-flex}.main-nav a:hover,.main-nav a[aria-current=page]{color:var(--blue)}.main-nav a[aria-current=page]{border-color:var(--blue)}.page{padding-block:56px 88px}.math-hero{grid-template-columns:1.1fr 1fr;align-items:center;gap:56px;padding:42px 0 74px;display:grid}.eyebrow,.section-index{font:500 11px/1.6 var(--mono);letter-spacing:.07em;color:var(--blue);margin:0 0 18px}h1,h2,h3,p{margin-top:0}.math-hero h1{white-space:pre-line;letter-spacing:-.05em;text-wrap:balance;margin:0 0 24px;font-size:clamp(40px,4.8vw,62px);font-weight:650;line-height:1.1}.hero-description{max-width:450px;color:var(--text-secondary);text-wrap:pretty;margin-bottom:24px;font-size:18px;line-height:1.65}.hero-actions{flex-wrap:wrap;align-items:center;gap:10px 20px;display:flex}.button-link,.text-link{border-radius:24px;justify-content:center;align-items:center;gap:12px;min-height:44px;padding:10px 18px;font-size:13px;font-weight:560;text-decoration:none;display:inline-flex}.button-link{color:#fff;background:#0068cf}.button-link:hover{background:#0059b3}.text-link{color:var(--blue);padding-inline:0}.text-link:hover{text-decoration:underline}.basis-art{border:1px solid var(--line);background:var(--surface);border-radius:24px;min-width:0;padding:22px;box-shadow:0 16px 48px #00000008}.art-label,.art-equation{font:10px/1.5 var(--mono);color:var(--text-secondary);justify-content:space-between;align-items:center;gap:12px;display:flex}.art-label{border-bottom:1px solid var(--line);padding-bottom:14px}.basis-art>svg{width:100%;margin-block:8px}.art-grid{color:var(--line-strong)}.art-axes{fill:none;stroke:var(--text-secondary);stroke-width:1px;opacity:.5}.art-area{fill:color-mix(in srgb, var(--blue) 10%, transparent);stroke:var(--blue);stroke-opacity:.4;stroke-dasharray:4 5}.art-vector{fill:none;stroke-width:3px;stroke-linecap:round;stroke-linejoin:round}.art-vector-one{stroke:var(--blue)}.art-vector-two{stroke:light-dark(#267c63,#71c6a8)}.art-origin{fill:var(--text)}.art-annotation{font:16px var(--mono);fill:var(--text-secondary)}.art-equation{border-top:1px solid var(--line);padding-top:16px}.art-equation>span:first-child{color:var(--text);font-size:17px}.art-caption{text-align:right;max-width:130px}.section{margin-top:60px;scroll-margin-top:28px}.section-heading{justify-content:space-between;align-items:end;gap:32px;margin-bottom:24px;display:flex}.section-heading h2{letter-spacing:-.035em;margin:0;font-size:30px;font-weight:620}.section-heading .section-index{margin-bottom:10px}.section-heading>p{max-width:350px;color:var(--text-secondary);margin:0;font-size:14px;line-height:1.65}.topic-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;display:grid}.topic-card,.path-card{border:1px solid var(--line);background:var(--surface);border-radius:20px;min-width:0;padding:24px;transition:border-color .16s,transform .16s;position:relative}.topic-card:hover,.path-card:hover{border-color:color-mix(in srgb, var(--blue) 45%, var(--line));transform:translateY(-2px)}.topic-symbol{width:46px;height:46px;color:var(--blue);background:var(--blue-soft);border-radius:14px;place-items:center;margin-bottom:28px;font:28px/1 Newsreader Variable,Georgia,serif;display:grid}.topic-card h3{letter-spacing:-.02em;margin-bottom:10px;font-size:18px;line-height:1.3}.topic-card h3 a,.path-card h3 a{text-decoration:none}.topic-card h3 a:after,.path-card h3 a:after{content:"";border-radius:20px;position:absolute;inset:0}.topic-card:focus-within,.path-card:focus-within{outline:3px solid var(--focus);outline-offset:3px}.topic-card p,.path-card p{color:var(--text-secondary);margin-bottom:20px;font-size:13px;line-height:1.65}.count{color:var(--text-tertiary);font:11px/1.5 var(--mono);display:block}.path-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.path-card{padding:28px}.path-card h3{letter-spacing:-.025em;margin:12px 0;font-size:22px}.path-source{color:var(--text-secondary);font:11px/1.6 var(--mono)}.page-heading{max-width:780px;margin-bottom:42px}.page-heading h1{letter-spacing:-.045em;text-wrap:balance;margin-bottom:20px;font-size:clamp(36px,4vw,50px);font-weight:650;line-height:1.12}.page-heading>p:not(.eyebrow){color:var(--text-secondary);font-size:18px;line-height:1.7}.breadcrumbs{color:var(--text-secondary);flex-wrap:wrap;align-items:center;gap:8px 12px;margin-bottom:28px;font-size:12px;display:flex}.breadcrumbs a{align-items:center;min-height:44px;text-decoration:none;display:inline-flex}.breadcrumbs a:hover{color:var(--blue)}.topic-questions{flex-wrap:wrap;gap:8px;padding:0;list-style:none;display:flex}.topic-questions li{color:var(--text-secondary);background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:8px 12px;font-size:12px}.note-list{border-top:1px solid var(--line)}.note-item{border-bottom:1px solid var(--line);padding-block:28px}.note-item h3{letter-spacing:-.02em;margin:12px 0;font-size:23px;font-weight:600;line-height:1.4}.note-item h3 a{justify-content:space-between;align-items:center;gap:18px;min-height:44px;text-decoration:none;display:flex}.note-item h3 a:hover{color:var(--blue)}.note-item h3 span{color:var(--blue);font-size:17px}.note-item p{max-width:760px;color:var(--text-secondary);margin:0;font-size:15px;line-height:1.7}.note-item-meta{color:var(--text-secondary);font:11px/1.6 var(--mono);flex-wrap:wrap;gap:8px 18px;display:flex}.draft-badge{color:var(--blue)}.preview-notice{color:var(--text-secondary);background:var(--blue-soft);border-radius:12px;padding:14px 18px;font-size:13px;line-height:1.6}.preview-notice strong{color:var(--blue);font-weight:550}.empty-state{border:1px dashed var(--line-strong);border-radius:20px;align-items:center;gap:24px;padding:32px;display:flex}.empty-symbol{color:var(--text-tertiary);font:40px/1 Newsreader Variable,Georgia,serif}.empty-state h3{margin:0 0 8px;font-size:17px;font-weight:550}.empty-state p{color:var(--text-secondary);margin:0;font-size:14px;line-height:1.6}.path-outline{counter-reset:route;padding:0;list-style:none}.path-step{counter-increment:route;border-top:1px solid var(--line);padding:24px 0 24px 54px;position:relative}.path-step:before{content:counter(route, decimal-leading-zero);color:var(--blue);font:12px/1.6 var(--mono);position:absolute;top:28px;left:0}.path-step>h2{font-size:21px;font-weight:600}.path-step .planned{color:var(--text-secondary);font-size:13px}.path-step .note-item{border:0;padding-bottom:0}.math-footer{border-top:1px solid var(--line);color:var(--text-secondary);justify-content:space-between;align-items:center;gap:20px;padding-block:24px 36px;font-size:12px;display:flex}.math-footer nav{flex-wrap:wrap;gap:20px;display:flex}.math-footer a{align-items:center;min-height:44px;text-decoration:none;display:inline-flex}.math-footer a:hover{color:var(--blue)}.gateway{place-items:center;min-height:70vh;display:grid}.gateway-panel{border:1px solid var(--line);background:var(--surface);border-radius:28px;width:min(100%,600px);padding:56px}.gateway-panel h1{letter-spacing:-.05em;font-size:clamp(38px,5vw,54px);font-weight:650}.gateway-panel>p{color:var(--text-secondary);line-height:1.7}.gateway-links{gap:12px;margin-top:30px;display:grid}.gateway-links a{border:1px solid var(--line);border-radius:12px;justify-content:space-between;min-height:52px;padding:16px 20px;text-decoration:none;display:flex}.gateway-links a:hover{color:var(--blue);background:var(--blue-soft)}.privacy-body{max-width:760px}.privacy-body section{margin-block:32px}.privacy-body h2{font-size:20px}.privacy-body p{color:var(--text-secondary);font-size:16px;line-height:1.8}.reading-grid{grid-template-columns:minmax(0,760px) minmax(160px,1fr);align-items:start;gap:64px;display:grid}.reading-column{min-width:0}.note-heading{border-bottom:1px solid var(--line);margin-bottom:32px;padding-bottom:28px}.note-heading h1{letter-spacing:-.04em;text-wrap:balance;margin:20px 0;font-size:clamp(34px,4vw,50px);font-weight:650;line-height:1.2}.note-description,.prose{font-optical-sizing:auto;font:400 18px/1.75 Newsreader Variable,Noto Serif TC,Georgia,serif}.note-description{color:var(--text-secondary);margin-bottom:24px}body[data-locale=zh-hant] .prose,body[data-locale=zh-hant] .note-description{font-size:17px}.prose{overflow-wrap:break-word}.prose h2,.prose h3{letter-spacing:-.01em;font-weight:600;line-height:1.35}.prose h2{margin:2.2em 0 .8em;font-size:1.5em}.prose h3{margin:1.8em 0 .75em;font-size:1.18em}.prose p{margin-bottom:1.1em}.prose a{color:var(--blue)}.prose li{margin-bottom:.4em}.prose blockquote{border-left:2px solid var(--line-strong);color:var(--text-secondary);margin:1.5em 0;padding-left:1.3em}.prose table{border-collapse:collapse;width:max-content;max-width:100%;margin:1.7em auto;font-family:inherit;font-size:.9em;line-height:1.5;display:block;overflow-x:auto}.prose th,.prose td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:.7em 1em}.prose th{border-bottom-color:var(--line-strong);font-weight:600}.prose code{font-family:var(--mono);font-size:.79em}.prose :not(pre)>code{background:var(--surface);border-radius:4px;padding:.1em .25em}.prose pre{border:1px solid var(--line);border-radius:12px;padding:20px;font-size:.92em;line-height:1.6;overflow-x:auto}.prose pre,.prose pre span{color:var(--shiki-light);background-color:var(--shiki-light-bg)}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .prose pre,:root:not([data-theme=light]) .prose pre span{color:var(--shiki-dark);background-color:var(--shiki-dark-bg)}}[data-theme=dark] .prose pre,[data-theme=dark] .prose pre span{color:var(--shiki-dark);background-color:var(--shiki-dark-bg)}.prose .katex{font-size:1.04em}.prose .katex-display{max-width:100%;margin:1.2em 0;padding:.6em .1em;overflow:auto hidden}.prose .katex-display>.katex{white-space:nowrap}.math-block{border:1px solid var(--line);border-left:3px solid var(--blue);background:var(--surface);border-radius:0 12px 12px 0;margin:1.8em 0;padding:20px 24px}.math-block-label,.math-block>summary{color:var(--text);font:600 .82em/1.7 var(--sans);margin:0 0 12px!important}.math-block>summary{min-height:44px;padding-block:8px;margin-bottom:0!important}.math-block[open]>summary{margin-bottom:16px!important}.math-block-content>:last-child{margin-bottom:0}.math-block-proof{border-left-color:var(--line-strong)}.qed{text-align:right;margin-top:8px;display:block}.toc{padding-top:8px;position:sticky;top:32px}.toc summary{min-height:44px;font:550 12px/1.6 var(--sans);padding-block:12px}.toc ol{padding:0;list-style:none}.toc a{min-height:44px;color:var(--text-secondary);font:12px/1.6 var(--sans);padding:10px 0;text-decoration:none;display:block}.toc a:hover{color:var(--blue)}.toc .toc-sub{padding-left:12px}.article-links{font:12px/1.6 var(--sans);color:var(--text-secondary);flex-wrap:wrap;align-items:center;gap:12px 20px;margin-top:24px;display:flex}.article-links a{min-height:44px;color:var(--blue);align-items:center;display:inline-flex}@media (width<=960px){.math-hero{gap:28px}.topic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-grid{flex-direction:column;gap:0;display:flex}.reading-column{width:100%}.toc{border:1px solid var(--line);border-radius:12px;order:-1;width:100%;margin-bottom:28px;padding:0 16px;position:static}}@media (width>=961px){.toc summary{list-style:none}.toc summary::-webkit-details-marker{display:none}}@media (width<=600px){.math-header,.math-footer,.page{width:calc(100% - 36px)}.header-top{flex-wrap:wrap;gap:6px;min-height:72px}.wordmark{font-size:17px}.header-actions{gap:6px}.current-locale{display:none!important}.locale-switch{padding:0;font-size:11px}.locale-switch a,.locale-switch span{padding-inline:10px}.unavailable-locale{max-width:110px}.main-nav{flex-wrap:wrap;gap:0;font-size:12px}.nav-sections{gap:20px}.garden-link{font-size:11px}.page{padding-block:32px 56px}.math-hero{grid-template-columns:1fr;gap:32px;padding:20px 0 8px}.math-hero h1{font-size:42px}.hero-description{font-size:16px}.basis-art{padding:18px}.basis-art>svg{max-height:240px}.section{margin-top:44px}.section-heading{display:block}.section-heading h2{font-size:27px}.section-heading>p{margin-top:12px}.topic-grid{gap:12px}.topic-card{padding:18px}.topic-symbol{margin-bottom:20px}.topic-card h3{font-size:17px}.path-grid{grid-template-columns:1fr}.path-card{padding:24px}.page-heading>p:not(.eyebrow){font-size:16px}.empty-state{gap:18px;padding:24px}.math-footer{flex-direction:column;align-items:flex-start;gap:8px}.math-footer nav{justify-content:space-between;width:100%}.gateway-panel{padding:30px 24px}.note-heading h1{font-size:34px}.note-description,.prose{font-size:17px}body[data-locale=zh-hant] .prose,body[data-locale=zh-hant] .note-description{font-size:16px}.math-block{padding:16px}}@media (width<=360px){.wordmark{font-size:15px}.header-actions{gap:4px}.topic-grid{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}.theme-switch[data-astro-cid-vjpuldkx]{display:inline-flex}.theme-switch-button[data-astro-cid-vjpuldkx]{border:1px solid var(--line);min-width:44px;min-height:44px;color:var(--text-secondary);background:var(--surface);cursor:pointer;border-radius:50%;place-items:center;padding:10px;display:grid}.theme-switch-button[data-astro-cid-vjpuldkx]:hover{color:var(--blue);background:var(--blue-soft)}.theme-switch-button[data-astro-cid-vjpuldkx]:focus-visible{outline:3px solid var(--focus);outline-offset:3px}.theme-icon[data-astro-cid-vjpuldkx]{fill:none;stroke:currentColor;stroke-width:1.6px;stroke-linecap:round;stroke-linejoin:round;width:18px;height:18px;display:none}[data-astro-cid-vjpuldkx][data-mode=system] .theme-icon-system[data-astro-cid-vjpuldkx],[data-astro-cid-vjpuldkx][data-mode=light] .theme-icon-light[data-astro-cid-vjpuldkx],[data-astro-cid-vjpuldkx][data-mode=dark] .theme-icon-dark[data-astro-cid-vjpuldkx]{display:block}