@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/heebo-hebrew-400-normal-CVTJgQVK.woff2) format("woff2"),url(/assets/heebo-hebrew-400-normal-DoqplqF9.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/heebo-math-400-normal-B7IFZoQI.woff2) format("woff2"),url(/assets/heebo-math-400-normal-BZIH-XlF.woff) format("woff");unicode-range:U+0302-0303,U+0305,U+0307-0308,U+0310,U+0312,U+0315,U+031A,U+0326-0327,U+032C,U+032F-0330,U+0332-0333,U+0338,U+033A,U+0346,U+034D,U+0391-03A1,U+03A3-03A9,U+03B1-03C9,U+03D1,U+03D5-03D6,U+03F0-03F1,U+03F4-03F5,U+2016-2017,U+2034-2038,U+203C,U+2040,U+2043,U+2047,U+2050,U+2057,U+205F,U+2070-2071,U+2074-208E,U+2090-209C,U+20D0-20DC,U+20E1,U+20E5-20EF,U+2100-2112,U+2114-2115,U+2117-2121,U+2123-214F,U+2190,U+2192,U+2194-21AE,U+21B0-21E5,U+21F1-21F2,U+21F4-2211,U+2213-2214,U+2216-22FF,U+2308-230B,U+2310,U+2319,U+231C-2321,U+2336-237A,U+237C,U+2395,U+239B-23B7,U+23D0,U+23DC-23E1,U+2474-2475,U+25AF,U+25B3,U+25B7,U+25BD,U+25C1,U+25CA,U+25CC,U+25FB,U+266D-266F,U+27C0-27FF,U+2900-2AFF,U+2B0E-2B11,U+2B30-2B4C,U+2BFE,U+3030,U+FF5B,U+FF5D,U+1D400-1D7FF,U+1EE00-1EEFF}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/heebo-symbols-400-normal-DYSXrd5A.woff2) format("woff2"),url(/assets/heebo-symbols-400-normal-5E_VKyNT.woff) format("woff");unicode-range:U+0001-000C,U+000E-001F,U+007F-009F,U+20DD-20E0,U+20E2-20E4,U+2150-218F,U+2190,U+2192,U+2194-2199,U+21AF,U+21E6-21F0,U+21F3,U+2218-2219,U+2299,U+22C4-22C6,U+2300-243F,U+2440-244A,U+2460-24FF,U+25A0-27BF,U+2800-28FF,U+2921-2922,U+2981,U+29BF,U+29EB,U+2B00-2BFF,U+4DC0-4DFF,U+FFF9-FFFB,U+10140-1018E,U+10190-1019C,U+101A0,U+101D0-101FD,U+102E0-102FB,U+10E60-10E7E,U+1D2C0-1D2D3,U+1D2E0-1D37F,U+1F000-1F0FF,U+1F100-1F1AD,U+1F1E6-1F1FF,U+1F30D-1F30F,U+1F315,U+1F31C,U+1F31E,U+1F320-1F32C,U+1F336,U+1F378,U+1F37D,U+1F382,U+1F393-1F39F,U+1F3A7-1F3A8,U+1F3AC-1F3AF,U+1F3C2,U+1F3C4-1F3C6,U+1F3CA-1F3CE,U+1F3D4-1F3E0,U+1F3ED,U+1F3F1-1F3F3,U+1F3F5-1F3F7,U+1F408,U+1F415,U+1F41F,U+1F426,U+1F43F,U+1F441-1F442,U+1F444,U+1F446-1F449,U+1F44C-1F44E,U+1F453,U+1F46A,U+1F47D,U+1F4A3,U+1F4B0,U+1F4B3,U+1F4B9,U+1F4BB,U+1F4BF,U+1F4C8-1F4CB,U+1F4D6,U+1F4DA,U+1F4DF,U+1F4E3-1F4E6,U+1F4EA-1F4ED,U+1F4F7,U+1F4F9-1F4FB,U+1F4FD-1F4FE,U+1F503,U+1F507-1F50B,U+1F50D,U+1F512-1F513,U+1F53E-1F54A,U+1F54F-1F5FA,U+1F610,U+1F650-1F67F,U+1F687,U+1F68D,U+1F691,U+1F694,U+1F698,U+1F6AD,U+1F6B2,U+1F6B9-1F6BA,U+1F6BC,U+1F6C6-1F6CF,U+1F6D3-1F6D7,U+1F6E0-1F6EA,U+1F6F0-1F6F3,U+1F6F7-1F6FC,U+1F700-1F7FF,U+1F800-1F80B,U+1F810-1F847,U+1F850-1F859,U+1F860-1F887,U+1F890-1F8AD,U+1F8B0-1F8BB,U+1F8C0-1F8C1,U+1F900-1F90B,U+1F93B,U+1F946,U+1F984,U+1F996,U+1F9E9,U+1FA00-1FA6F,U+1FA70-1FA7C,U+1FA80-1FA89,U+1FA8F-1FAC6,U+1FACE-1FADC,U+1FADF-1FAE9,U+1FAF0-1FAF8,U+1FB00-1FBFF}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/heebo-latin-ext-400-normal-DRmJUxQB.woff2) format("woff2"),url(/assets/heebo-latin-ext-400-normal-DXPdCX6a.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Heebo;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/heebo-latin-400-normal-BGyEuwIV.woff2) format("woff2"),url(/assets/heebo-latin-400-normal-BVgBBEsj.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/heebo-hebrew-500-normal-TEhwuRN-.woff2) format("woff2"),url(/assets/heebo-hebrew-500-normal-B1vvQVzc.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/heebo-math-500-normal-DRhwLwt2.woff2) format("woff2"),url(/assets/heebo-math-500-normal-CriDK-QD.woff) format("woff");unicode-range:U+0302-0303,U+0305,U+0307-0308,U+0310,U+0312,U+0315,U+031A,U+0326-0327,U+032C,U+032F-0330,U+0332-0333,U+0338,U+033A,U+0346,U+034D,U+0391-03A1,U+03A3-03A9,U+03B1-03C9,U+03D1,U+03D5-03D6,U+03F0-03F1,U+03F4-03F5,U+2016-2017,U+2034-2038,U+203C,U+2040,U+2043,U+2047,U+2050,U+2057,U+205F,U+2070-2071,U+2074-208E,U+2090-209C,U+20D0-20DC,U+20E1,U+20E5-20EF,U+2100-2112,U+2114-2115,U+2117-2121,U+2123-214F,U+2190,U+2192,U+2194-21AE,U+21B0-21E5,U+21F1-21F2,U+21F4-2211,U+2213-2214,U+2216-22FF,U+2308-230B,U+2310,U+2319,U+231C-2321,U+2336-237A,U+237C,U+2395,U+239B-23B7,U+23D0,U+23DC-23E1,U+2474-2475,U+25AF,U+25B3,U+25B7,U+25BD,U+25C1,U+25CA,U+25CC,U+25FB,U+266D-266F,U+27C0-27FF,U+2900-2AFF,U+2B0E-2B11,U+2B30-2B4C,U+2BFE,U+3030,U+FF5B,U+FF5D,U+1D400-1D7FF,U+1EE00-1EEFF}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/heebo-symbols-500-normal-DH-fW6iB.woff2) format("woff2"),url(/assets/heebo-symbols-500-normal-BHV7NI0G.woff) format("woff");unicode-range:U+0001-000C,U+000E-001F,U+007F-009F,U+20DD-20E0,U+20E2-20E4,U+2150-218F,U+2190,U+2192,U+2194-2199,U+21AF,U+21E6-21F0,U+21F3,U+2218-2219,U+2299,U+22C4-22C6,U+2300-243F,U+2440-244A,U+2460-24FF,U+25A0-27BF,U+2800-28FF,U+2921-2922,U+2981,U+29BF,U+29EB,U+2B00-2BFF,U+4DC0-4DFF,U+FFF9-FFFB,U+10140-1018E,U+10190-1019C,U+101A0,U+101D0-101FD,U+102E0-102FB,U+10E60-10E7E,U+1D2C0-1D2D3,U+1D2E0-1D37F,U+1F000-1F0FF,U+1F100-1F1AD,U+1F1E6-1F1FF,U+1F30D-1F30F,U+1F315,U+1F31C,U+1F31E,U+1F320-1F32C,U+1F336,U+1F378,U+1F37D,U+1F382,U+1F393-1F39F,U+1F3A7-1F3A8,U+1F3AC-1F3AF,U+1F3C2,U+1F3C4-1F3C6,U+1F3CA-1F3CE,U+1F3D4-1F3E0,U+1F3ED,U+1F3F1-1F3F3,U+1F3F5-1F3F7,U+1F408,U+1F415,U+1F41F,U+1F426,U+1F43F,U+1F441-1F442,U+1F444,U+1F446-1F449,U+1F44C-1F44E,U+1F453,U+1F46A,U+1F47D,U+1F4A3,U+1F4B0,U+1F4B3,U+1F4B9,U+1F4BB,U+1F4BF,U+1F4C8-1F4CB,U+1F4D6,U+1F4DA,U+1F4DF,U+1F4E3-1F4E6,U+1F4EA-1F4ED,U+1F4F7,U+1F4F9-1F4FB,U+1F4FD-1F4FE,U+1F503,U+1F507-1F50B,U+1F50D,U+1F512-1F513,U+1F53E-1F54A,U+1F54F-1F5FA,U+1F610,U+1F650-1F67F,U+1F687,U+1F68D,U+1F691,U+1F694,U+1F698,U+1F6AD,U+1F6B2,U+1F6B9-1F6BA,U+1F6BC,U+1F6C6-1F6CF,U+1F6D3-1F6D7,U+1F6E0-1F6EA,U+1F6F0-1F6F3,U+1F6F7-1F6FC,U+1F700-1F7FF,U+1F800-1F80B,U+1F810-1F847,U+1F850-1F859,U+1F860-1F887,U+1F890-1F8AD,U+1F8B0-1F8BB,U+1F8C0-1F8C1,U+1F900-1F90B,U+1F93B,U+1F946,U+1F984,U+1F996,U+1F9E9,U+1FA00-1FA6F,U+1FA70-1FA7C,U+1FA80-1FA89,U+1FA8F-1FAC6,U+1FACE-1FADC,U+1FADF-1FAE9,U+1FAF0-1FAF8,U+1FB00-1FBFF}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/heebo-latin-ext-500-normal-i0ou_jpq.woff2) format("woff2"),url(/assets/heebo-latin-ext-500-normal-BxM-et3U.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Heebo;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/heebo-latin-500-normal-CRntKADR.woff2) format("woff2"),url(/assets/heebo-latin-500-normal-D9arPEGc.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/heebo-hebrew-700-normal-BmueYKsA.woff2) format("woff2"),url(/assets/heebo-hebrew-700-normal-C-m02vPD.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/heebo-math-700-normal-CPsTiLVd.woff2) format("woff2"),url(/assets/heebo-math-700-normal-DYoC40KU.woff) format("woff");unicode-range:U+0302-0303,U+0305,U+0307-0308,U+0310,U+0312,U+0315,U+031A,U+0326-0327,U+032C,U+032F-0330,U+0332-0333,U+0338,U+033A,U+0346,U+034D,U+0391-03A1,U+03A3-03A9,U+03B1-03C9,U+03D1,U+03D5-03D6,U+03F0-03F1,U+03F4-03F5,U+2016-2017,U+2034-2038,U+203C,U+2040,U+2043,U+2047,U+2050,U+2057,U+205F,U+2070-2071,U+2074-208E,U+2090-209C,U+20D0-20DC,U+20E1,U+20E5-20EF,U+2100-2112,U+2114-2115,U+2117-2121,U+2123-214F,U+2190,U+2192,U+2194-21AE,U+21B0-21E5,U+21F1-21F2,U+21F4-2211,U+2213-2214,U+2216-22FF,U+2308-230B,U+2310,U+2319,U+231C-2321,U+2336-237A,U+237C,U+2395,U+239B-23B7,U+23D0,U+23DC-23E1,U+2474-2475,U+25AF,U+25B3,U+25B7,U+25BD,U+25C1,U+25CA,U+25CC,U+25FB,U+266D-266F,U+27C0-27FF,U+2900-2AFF,U+2B0E-2B11,U+2B30-2B4C,U+2BFE,U+3030,U+FF5B,U+FF5D,U+1D400-1D7FF,U+1EE00-1EEFF}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/heebo-symbols-700-normal-DjMVWKhZ.woff2) format("woff2"),url(/assets/heebo-symbols-700-normal-Bez4Ifx8.woff) format("woff");unicode-range:U+0001-000C,U+000E-001F,U+007F-009F,U+20DD-20E0,U+20E2-20E4,U+2150-218F,U+2190,U+2192,U+2194-2199,U+21AF,U+21E6-21F0,U+21F3,U+2218-2219,U+2299,U+22C4-22C6,U+2300-243F,U+2440-244A,U+2460-24FF,U+25A0-27BF,U+2800-28FF,U+2921-2922,U+2981,U+29BF,U+29EB,U+2B00-2BFF,U+4DC0-4DFF,U+FFF9-FFFB,U+10140-1018E,U+10190-1019C,U+101A0,U+101D0-101FD,U+102E0-102FB,U+10E60-10E7E,U+1D2C0-1D2D3,U+1D2E0-1D37F,U+1F000-1F0FF,U+1F100-1F1AD,U+1F1E6-1F1FF,U+1F30D-1F30F,U+1F315,U+1F31C,U+1F31E,U+1F320-1F32C,U+1F336,U+1F378,U+1F37D,U+1F382,U+1F393-1F39F,U+1F3A7-1F3A8,U+1F3AC-1F3AF,U+1F3C2,U+1F3C4-1F3C6,U+1F3CA-1F3CE,U+1F3D4-1F3E0,U+1F3ED,U+1F3F1-1F3F3,U+1F3F5-1F3F7,U+1F408,U+1F415,U+1F41F,U+1F426,U+1F43F,U+1F441-1F442,U+1F444,U+1F446-1F449,U+1F44C-1F44E,U+1F453,U+1F46A,U+1F47D,U+1F4A3,U+1F4B0,U+1F4B3,U+1F4B9,U+1F4BB,U+1F4BF,U+1F4C8-1F4CB,U+1F4D6,U+1F4DA,U+1F4DF,U+1F4E3-1F4E6,U+1F4EA-1F4ED,U+1F4F7,U+1F4F9-1F4FB,U+1F4FD-1F4FE,U+1F503,U+1F507-1F50B,U+1F50D,U+1F512-1F513,U+1F53E-1F54A,U+1F54F-1F5FA,U+1F610,U+1F650-1F67F,U+1F687,U+1F68D,U+1F691,U+1F694,U+1F698,U+1F6AD,U+1F6B2,U+1F6B9-1F6BA,U+1F6BC,U+1F6C6-1F6CF,U+1F6D3-1F6D7,U+1F6E0-1F6EA,U+1F6F0-1F6F3,U+1F6F7-1F6FC,U+1F700-1F7FF,U+1F800-1F80B,U+1F810-1F847,U+1F850-1F859,U+1F860-1F887,U+1F890-1F8AD,U+1F8B0-1F8BB,U+1F8C0-1F8C1,U+1F900-1F90B,U+1F93B,U+1F946,U+1F984,U+1F996,U+1F9E9,U+1FA00-1FA6F,U+1FA70-1FA7C,U+1FA80-1FA89,U+1FA8F-1FAC6,U+1FACE-1FADC,U+1FADF-1FAE9,U+1FAF0-1FAF8,U+1FB00-1FBFF}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/heebo-latin-ext-700-normal-qhovM35d.woff2) format("woff2"),url(/assets/heebo-latin-ext-700-normal-uPTFHbI6.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Heebo;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/heebo-latin-700-normal-PoyjiH5f.woff2) format("woff2"),url(/assets/heebo-latin-700-normal-DxB9_ClD.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/heebo-hebrew-800-normal-CDdwy3LD.woff2) format("woff2"),url(/assets/heebo-hebrew-800-normal-DvzqWKY1.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/heebo-math-800-normal-BsL7yxmb.woff2) format("woff2"),url(/assets/heebo-math-800-normal-CkZgLaga.woff) format("woff");unicode-range:U+0302-0303,U+0305,U+0307-0308,U+0310,U+0312,U+0315,U+031A,U+0326-0327,U+032C,U+032F-0330,U+0332-0333,U+0338,U+033A,U+0346,U+034D,U+0391-03A1,U+03A3-03A9,U+03B1-03C9,U+03D1,U+03D5-03D6,U+03F0-03F1,U+03F4-03F5,U+2016-2017,U+2034-2038,U+203C,U+2040,U+2043,U+2047,U+2050,U+2057,U+205F,U+2070-2071,U+2074-208E,U+2090-209C,U+20D0-20DC,U+20E1,U+20E5-20EF,U+2100-2112,U+2114-2115,U+2117-2121,U+2123-214F,U+2190,U+2192,U+2194-21AE,U+21B0-21E5,U+21F1-21F2,U+21F4-2211,U+2213-2214,U+2216-22FF,U+2308-230B,U+2310,U+2319,U+231C-2321,U+2336-237A,U+237C,U+2395,U+239B-23B7,U+23D0,U+23DC-23E1,U+2474-2475,U+25AF,U+25B3,U+25B7,U+25BD,U+25C1,U+25CA,U+25CC,U+25FB,U+266D-266F,U+27C0-27FF,U+2900-2AFF,U+2B0E-2B11,U+2B30-2B4C,U+2BFE,U+3030,U+FF5B,U+FF5D,U+1D400-1D7FF,U+1EE00-1EEFF}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/heebo-symbols-800-normal-FYIx6Vl3.woff2) format("woff2"),url(/assets/heebo-symbols-800-normal-BkpivR9G.woff) format("woff");unicode-range:U+0001-000C,U+000E-001F,U+007F-009F,U+20DD-20E0,U+20E2-20E4,U+2150-218F,U+2190,U+2192,U+2194-2199,U+21AF,U+21E6-21F0,U+21F3,U+2218-2219,U+2299,U+22C4-22C6,U+2300-243F,U+2440-244A,U+2460-24FF,U+25A0-27BF,U+2800-28FF,U+2921-2922,U+2981,U+29BF,U+29EB,U+2B00-2BFF,U+4DC0-4DFF,U+FFF9-FFFB,U+10140-1018E,U+10190-1019C,U+101A0,U+101D0-101FD,U+102E0-102FB,U+10E60-10E7E,U+1D2C0-1D2D3,U+1D2E0-1D37F,U+1F000-1F0FF,U+1F100-1F1AD,U+1F1E6-1F1FF,U+1F30D-1F30F,U+1F315,U+1F31C,U+1F31E,U+1F320-1F32C,U+1F336,U+1F378,U+1F37D,U+1F382,U+1F393-1F39F,U+1F3A7-1F3A8,U+1F3AC-1F3AF,U+1F3C2,U+1F3C4-1F3C6,U+1F3CA-1F3CE,U+1F3D4-1F3E0,U+1F3ED,U+1F3F1-1F3F3,U+1F3F5-1F3F7,U+1F408,U+1F415,U+1F41F,U+1F426,U+1F43F,U+1F441-1F442,U+1F444,U+1F446-1F449,U+1F44C-1F44E,U+1F453,U+1F46A,U+1F47D,U+1F4A3,U+1F4B0,U+1F4B3,U+1F4B9,U+1F4BB,U+1F4BF,U+1F4C8-1F4CB,U+1F4D6,U+1F4DA,U+1F4DF,U+1F4E3-1F4E6,U+1F4EA-1F4ED,U+1F4F7,U+1F4F9-1F4FB,U+1F4FD-1F4FE,U+1F503,U+1F507-1F50B,U+1F50D,U+1F512-1F513,U+1F53E-1F54A,U+1F54F-1F5FA,U+1F610,U+1F650-1F67F,U+1F687,U+1F68D,U+1F691,U+1F694,U+1F698,U+1F6AD,U+1F6B2,U+1F6B9-1F6BA,U+1F6BC,U+1F6C6-1F6CF,U+1F6D3-1F6D7,U+1F6E0-1F6EA,U+1F6F0-1F6F3,U+1F6F7-1F6FC,U+1F700-1F7FF,U+1F800-1F80B,U+1F810-1F847,U+1F850-1F859,U+1F860-1F887,U+1F890-1F8AD,U+1F8B0-1F8BB,U+1F8C0-1F8C1,U+1F900-1F90B,U+1F93B,U+1F946,U+1F984,U+1F996,U+1F9E9,U+1FA00-1FA6F,U+1FA70-1FA7C,U+1FA80-1FA89,U+1FA8F-1FAC6,U+1FACE-1FADC,U+1FADF-1FAE9,U+1FAF0-1FAF8,U+1FB00-1FBFF}@font-face{font-family:Heebo;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/heebo-latin-ext-800-normal-BXXnkLdf.woff2) format("woff2"),url(/assets/heebo-latin-ext-800-normal-CaKn05T8.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Heebo;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/heebo-latin-800-normal-CXX3wFtI.woff2) format("woff2"),url(/assets/heebo-latin-800-normal-jzg0ZXtx.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/frank-ruhl-libre-hebrew-700-normal-ZxcPrX5v.woff2) format("woff2"),url(/assets/frank-ruhl-libre-hebrew-700-normal-B5o0XYJ1.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/frank-ruhl-libre-latin-ext-700-normal-VfVLWWBc.woff2) format("woff2"),url(/assets/frank-ruhl-libre-latin-ext-700-normal-C48ktjdO.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/frank-ruhl-libre-latin-700-normal-BtbVhCvj.woff2) format("woff2"),url(/assets/frank-ruhl-libre-latin-700-normal-Mv4_ahRh.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/frank-ruhl-libre-hebrew-800-normal-BL6BESiZ.woff2) format("woff2"),url(/assets/frank-ruhl-libre-hebrew-800-normal-3Wy4-lGC.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/frank-ruhl-libre-latin-ext-800-normal-BOsj5lSk.woff2) format("woff2"),url(/assets/frank-ruhl-libre-latin-ext-800-normal-BurDhEZl.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:800;src:url(/assets/frank-ruhl-libre-latin-800-normal-DQ4qi0Tt.woff2) format("woff2"),url(/assets/frank-ruhl-libre-latin-800-normal-C0QYiSeL.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:900;src:url(/assets/frank-ruhl-libre-hebrew-900-normal-CYMPuKQS.woff2) format("woff2"),url(/assets/frank-ruhl-libre-hebrew-900-normal-D3IcMwwE.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:900;src:url(/assets/frank-ruhl-libre-latin-ext-900-normal-jL3t1DAx.woff2) format("woff2"),url(/assets/frank-ruhl-libre-latin-ext-900-normal-_Pq48Yg_.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Frank Ruhl Libre;font-style:normal;font-display:swap;font-weight:900;src:url(/assets/frank-ruhl-libre-latin-900-normal-Dz8a1QxH.woff2) format("woff2"),url(/assets/frank-ruhl-libre-latin-900-normal-B9WZczS4.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Assistant;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/assistant-hebrew-400-normal-BaQtOmbn.woff2) format("woff2"),url(/assets/assistant-hebrew-400-normal-B18Ux13Q.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Assistant;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/assistant-latin-ext-400-normal-CJRdOknU.woff2) format("woff2"),url(/assets/assistant-latin-ext-400-normal-BcqNq6r3.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Assistant;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/assistant-latin-400-normal-CDF-mh-3.woff2) format("woff2"),url(/assets/assistant-latin-400-normal-BKD5Gqji.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Assistant;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/assistant-hebrew-600-normal-DM_XHISn.woff2) format("woff2"),url(/assets/assistant-hebrew-600-normal-D6VOnxse.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Assistant;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/assistant-latin-ext-600-normal-BRc8ZhdA.woff2) format("woff2"),url(/assets/assistant-latin-ext-600-normal-DvGDKMJu.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Assistant;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/assistant-latin-600-normal-DQhO4fCi.woff2) format("woff2"),url(/assets/assistant-latin-600-normal-CfJI0IBS.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Assistant;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/assistant-hebrew-700-normal-DbcUQTwo.woff2) format("woff2"),url(/assets/assistant-hebrew-700-normal-D7ACPilb.woff) format("woff");unicode-range:U+0307-0308,U+0590-05FF,U+200C-2010,U+20AA,U+25CC,U+FB1D-FB4F}@font-face{font-family:Assistant;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/assistant-latin-ext-700-normal-BKDtlU5N.woff2) format("woff2"),url(/assets/assistant-latin-ext-700-normal-D7H1VhBc.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Assistant;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/assistant-latin-700-normal-Bh4ZScKg.woff2) format("woff2"),url(/assets/assistant-latin-700-normal-CguIzUmX.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/source-sans-3-cyrillic-ext-400-normal-BwJdxs7r.woff2) format("woff2"),url(/assets/source-sans-3-cyrillic-ext-400-normal-Cd63HKDh.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/source-sans-3-cyrillic-400-normal-DjhbW-4D.woff2) format("woff2"),url(/assets/source-sans-3-cyrillic-400-normal-7kQcAFpS.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/source-sans-3-greek-ext-400-normal-CpIwTHMM.woff2) format("woff2"),url(/assets/source-sans-3-greek-ext-400-normal-BI1kUwmR.woff) format("woff");unicode-range:U+1F00-1FFF}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/source-sans-3-greek-400-normal-DZReXJla.woff2) format("woff2"),url(/assets/source-sans-3-greek-400-normal-DJm9Ud5h.woff) format("woff");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/source-sans-3-vietnamese-400-normal-CwtaIDr2.woff2) format("woff2"),url(/assets/source-sans-3-vietnamese-400-normal-dYp9C364.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/source-sans-3-latin-ext-400-normal-UNsKFIBq.woff2) format("woff2"),url(/assets/source-sans-3-latin-ext-400-normal-BGPHfnm_.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:"Source Sans 3";font-style:normal;font-display:swap;font-weight:400;src:url(/assets/source-sans-3-latin-400-normal-DQi5PRDE.woff2) format("woff2"),url(/assets/source-sans-3-latin-400-normal-AFMiCETP.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:600;src:url(/assets/source-sans-3-cyrillic-ext-600-normal-6AhwUnSr.woff2) format("woff2"),url(/assets/source-sans-3-cyrillic-ext-600-normal-uAL1a5gb.woff) format("woff");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:600;src:url(/assets/source-sans-3-cyrillic-600-normal-BnFu5nHC.woff2) format("woff2"),url(/assets/source-sans-3-cyrillic-600-normal-y-RO8wOd.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:600;src:url(/assets/source-sans-3-greek-ext-600-normal-DynePNDL.woff2) format("woff2"),url(/assets/source-sans-3-greek-ext-600-normal-D7vJ4nVX.woff) format("woff");unicode-range:U+1F00-1FFF}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:600;src:url(/assets/source-sans-3-greek-600-normal-BSO157bq.woff2) format("woff2"),url(/assets/source-sans-3-greek-600-normal-BNF9LBpG.woff) format("woff");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:600;src:url(/assets/source-sans-3-vietnamese-600-normal-B2sTNYey.woff2) format("woff2"),url(/assets/source-sans-3-vietnamese-600-normal-DpSexF-T.woff) format("woff");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:"Source Sans 3";font-style:normal;font-display:swap;font-weight:600;src:url(/assets/source-sans-3-latin-ext-600-normal-AEyhgUpm.woff2) format("woff2"),url(/assets/source-sans-3-latin-ext-600-normal-Wy7HIzqC.woff) format("woff");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:"Source Sans 3";font-style:normal;font-display:swap;font-weight:600;src:url(/assets/source-sans-3-latin-600-normal-DeckBYAU.woff2) format("woff2"),url(/assets/source-sans-3-latin-600-normal-BvDVuF-j.woff) format("woff");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/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(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/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(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/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(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.47"}.katex .katex-mathml{border:0;-webkit-clip-path:inset(50%);clip-path:inset(50%);height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.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;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.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{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.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;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.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:.8333333333em}.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:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.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:1.6666666667em}.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:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.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:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.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:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.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:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.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:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.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:.4166666667em}.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:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.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:.8333333333em}.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:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.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:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.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:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.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:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.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:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.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{display:inline-block;width:.12em}.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{display:inline-block;min-width:1px}.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;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.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{border:.04em solid;box-sizing:border-box}.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{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;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{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.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{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}:root{--font-body: "Heebo", "Segoe UI", system-ui, -apple-system, Arial, sans-serif;--font-display: "Frank Ruhl Libre", "Heebo", Georgia, "Times New Roman", serif;--paper: #f4f1e9;--surface: #fffdf8;--surface-2: #faf7ef;--ink: #15192b;--ink-soft: #3c4257;--muted: #565d73;--line: #e7e1d2;--line-strong: #d8d0bd;--accent: #1e3b30;--accent-deep: #142920;--accent-weak: #e4ede8;--amber: #c8860a;--amber-weak: #f8eed4;--ok: #147049;--ok-weak: #e1f3e9;--warn: #8a5b00;--warn-weak: #f8edd2;--danger: #b3372b;--danger-weak: #fae8e4;--on-accent: #fff;--hero-from: var(--accent-deep);--hero-to: var(--accent);--topbar-bg: rgba(255, 253, 248, .82);--glow-amber: rgba(200, 134, 10, .09);--glow-green: rgba(30, 59, 48, .06);--grid-line: rgba(30, 59, 48, .045);--chip-hover: #f3e3bf;--cov-untouched: #c7c1b2;--skeleton-hi: #efe9dc;--radius: 16px;--radius-sm: 10px;--radius-pill: 999px;--shadow-sm: 0 1px 2px rgba(21, 25, 43, .05), 0 1px 3px rgba(21, 25, 43, .04);--shadow: 0 2px 6px rgba(21, 25, 43, .06), 0 12px 30px rgba(21, 25, 43, .07);--shadow-lg: 0 6px 16px rgba(21, 25, 43, .1), 0 24px 60px rgba(20, 41, 32, .12);--topbar-h: 64px;--s1: 4px;--s2: 8px;--s3: 12px;--s4: 16px;--s5: 24px;--s6: 32px;--s7: 48px}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--paper: #111a16;--surface: #17231e;--surface-2: #1e2c26;--ink: #ece7da;--ink-soft: #cdd3cb;--muted: #a3afa7;--line: #2c3d35;--line-strong: #3d5248;--accent: #8fcdb0;--accent-deep: #b6e2cc;--accent-weak: #1f3a2f;--amber: #d9b45a;--amber-weak: #3a3120;--ok: #7fbf9a;--ok-weak: #1d3529;--warn: #e3bf62;--warn-weak: #3a3120;--danger: #e8897b;--danger-weak: #3d2220;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3), 0 1px 3px rgba(0, 0, 0, .25);--shadow: 0 2px 6px rgba(0, 0, 0, .3), 0 12px 30px rgba(0, 0, 0, .35);--shadow-lg: 0 6px 16px rgba(0, 0, 0, .4), 0 24px 60px rgba(0, 0, 0, .45);--on-accent: #111a16;--hero-from: #0c1a14;--hero-to: #1e3b30;--topbar-bg: rgba(23, 35, 30, .85);--glow-amber: rgba(217, 180, 90, .06);--glow-green: rgba(127, 191, 154, .05);--grid-line: rgba(236, 231, 218, .035);--chip-hover: #3a3120;--cov-untouched: #3d4a43;--skeleton-hi: #26352e;--surface-weak: var(--surface-2);--border: var(--line);--cal-row-ok: #1d3529;--cal-row-bad: #3d2220;--cal-row-err: #26352e;color-scheme:dark}}:root[data-theme=dark]{--paper: #111a16;--surface: #17231e;--surface-2: #1e2c26;--ink: #ece7da;--ink-soft: #cdd3cb;--muted: #a3afa7;--line: #2c3d35;--line-strong: #3d5248;--accent: #8fcdb0;--accent-deep: #b6e2cc;--accent-weak: #1f3a2f;--amber: #d9b45a;--amber-weak: #3a3120;--ok: #7fbf9a;--ok-weak: #1d3529;--warn: #e3bf62;--warn-weak: #3a3120;--danger: #e8897b;--danger-weak: #3d2220;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3), 0 1px 3px rgba(0, 0, 0, .25);--shadow: 0 2px 6px rgba(0, 0, 0, .3), 0 12px 30px rgba(0, 0, 0, .35);--shadow-lg: 0 6px 16px rgba(0, 0, 0, .4), 0 24px 60px rgba(0, 0, 0, .45);--on-accent: #111a16;--hero-from: #0c1a14;--hero-to: #1e3b30;--topbar-bg: rgba(23, 35, 30, .85);--glow-amber: rgba(217, 180, 90, .06);--glow-green: rgba(127, 191, 154, .05);--grid-line: rgba(236, 231, 218, .035);--chip-hover: #3a3120;--cov-untouched: #3d4a43;--skeleton-hi: #26352e;--surface-weak: var(--surface-2);--border: var(--line);--cal-row-ok: #1d3529;--cal-row-bad: #3d2220;--cal-row-err: #26352e;color-scheme:dark}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;color:var(--ink);font-family:var(--font-body);line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;background-color:var(--paper);background-image:radial-gradient(1100px 480px at 82% -8%,var(--glow-amber),transparent 60%),radial-gradient(900px 500px at 0% 0%,var(--glow-green),transparent 55%),linear-gradient(var(--grid-line) 1px,transparent 1px),linear-gradient(90deg,var(--grid-line) 1px,transparent 1px);background-size:100% 100%,100% 100%,27px 27px,27px 27px;background-attachment:fixed}h1,h2,h3{font-family:var(--font-display);font-weight:800;letter-spacing:-.01em;line-height:1.2;color:var(--ink)}h1{font-size:clamp(1.6rem,1.2rem + 1.6vw,2.3rem)}h2{font-size:1.35rem}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline;text-underline-offset:3px}.app{min-height:100%;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;gap:var(--s4);padding:var(--s3) var(--s6);background:var(--topbar-bg);-webkit-backdrop-filter:saturate(1.4) blur(10px);backdrop-filter:saturate(1.4) blur(10px);border-block-end:1px solid var(--line);position:sticky;inset-block-start:0;z-index:20}.topbar .brand{font-family:var(--font-display);font-weight:900;font-size:1.5rem;color:var(--accent-deep);letter-spacing:-.02em}.topbar .brand:before{content:"◢ ";color:var(--amber);font-family:var(--font-body)}.topbar nav{display:flex;gap:var(--s2)}.topbar nav a{position:relative;padding:var(--s2) var(--s3);color:var(--ink-soft);font-weight:600;border-radius:var(--radius-sm)}.topbar nav a:hover{text-decoration:none;background:var(--surface-2)}.topbar nav a.active{color:var(--accent-deep)}.topbar nav a.active:after{content:"";position:absolute;inset-inline:var(--s3);inset-block-end:-1px;block-size:3px;border-radius:3px;background:linear-gradient(90deg,var(--accent),var(--amber))}.spacer{flex:1}.search-box{display:inline-flex;align-items:center;gap:var(--s1)}.search-box input{max-inline-size:200px}.search-box input[type=search]::-webkit-search-cancel-button{-webkit-appearance:none;-moz-appearance:none;appearance:none}.search-clear{border:none;background:none;cursor:pointer;padding:0 var(--s1);font-size:1.25rem;line-height:1;color:var(--ink-soft, inherit)}.search-clear:hover{color:var(--accent-deep)}.topic-search{position:sticky;inset-block-start:var(--topbar-h);z-index:10;margin-block:calc(-1 * var(--s2)) 0;padding-block:var(--s3);background:var(--paper);box-shadow:0 0 0 var(--s4) var(--paper)}.topic-search .search-box{display:flex;gap:var(--s2);padding:var(--s3) var(--s4);border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-sm)}.topic-search .search-box:focus-within{border-color:var(--accent)}.topic-search .search-box input{flex:1;max-inline-size:none;border:none;background:none;padding:0;font-size:1.05rem}.topic-search .search-box input:focus{outline:none}.outline-rail{position:fixed;inset-block:var(--topbar-h) 0;inset-inline-start:0;z-index:15;display:flex;flex-direction:column;gap:1px;inline-size:13rem;overflow-y:auto;padding:var(--s5) var(--s3);border-inline-end:1px solid transparent;background:transparent;transition:inline-size .18s ease,background .18s ease,border-color .18s ease,box-shadow .18s ease}.outline-rail:hover,.outline-rail:focus-within{inline-size:24rem;background:var(--surface);border-inline-end-color:var(--line);box-shadow:var(--shadow-lg)}.outline-item{display:block;inline-size:100%;padding:var(--s2) var(--s3);border:none;border-inline-start:2px solid var(--line);background:none;cursor:pointer;font:inherit;font-size:.9rem;line-height:1.5;color:var(--ink-soft);text-align:start;white-space:nowrap;overflow:hidden}.outline-item:hover{color:var(--accent-deep);border-inline-start-color:var(--accent-weak)}.outline-item.active{color:var(--accent-deep);font-weight:700;border-inline-start-color:var(--amber)}.outline-full{display:none}.outline-rail:hover .outline-short,.outline-rail:focus-within .outline-short{display:none}.outline-rail:hover .outline-full,.outline-rail:focus-within .outline-full{display:inline}@media (max-width: 1300px){.outline-rail{display:none}}@media (max-width: 640px){.topic-search{position:static;box-shadow:none}}.ux-tab.up,.ux-panel.up{inset-block-start:calc(var(--topbar-h) + var(--s3));inset-block-end:auto}.ux-panel.up{max-block-size:calc(100vh - var(--topbar-h) - var(--s6))}.chat-dock{position:fixed;inset-block-end:var(--s4);inset-inline-end:var(--s4);z-index:30;display:flex;flex-direction:column;align-items:flex-end;gap:var(--s2)}.chat-dock-launcher{order:2;align-self:flex-end;display:inline-flex;align-items:center;gap:var(--s2);padding:var(--s3) var(--s4);border:none;border-radius:var(--radius-pill);background:var(--accent);color:var(--on-accent);cursor:pointer;font:inherit;font-weight:700;font-size:.9rem;box-shadow:var(--shadow)}.chat-dock-launcher:hover{background:var(--accent-deep)}.chat-dock.open .chat-dock-launcher span{display:none}.chat-dock-body{order:1;inline-size:min(26rem,calc(100vw - 2 * var(--s4)));max-block-size:min(70vh,38rem);overflow-y:auto;border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-lg)}.chat-dock-body .card{margin:0;border:none;box-shadow:none;padding:var(--s4)}.concept-header .tabs.tabs-many{flex-wrap:wrap;gap:var(--s3) var(--s4)}.back-to-topics{position:fixed;inset-block-end:var(--s4);inset-inline-start:var(--s4);z-index:16;display:inline-flex;align-items:center;gap:var(--s2);padding:var(--s2) var(--s4);border:1px solid var(--line-strong);border-radius:var(--radius-pill);background:var(--surface);box-shadow:var(--shadow-sm);color:var(--ink-soft);font-weight:600;font-size:.85rem}.back-to-topics:hover{text-decoration:none;color:var(--accent-deep);border-color:var(--accent-weak);box-shadow:var(--shadow)}.outline-rail{padding-block-end:var(--s7)}.chapter-toggle{display:flex;align-items:baseline;gap:var(--s2);inline-size:100%;padding:var(--s2) var(--s3);margin-inline-start:calc(-1 * var(--s3));border:1px solid transparent;border-radius:var(--radius-sm);background:none;cursor:pointer;font:inherit;color:inherit;text-align:start;transition:background .15s ease,border-color .15s ease}.chapter-toggle.shut{background:var(--amber-weak);border-color:transparent;border-inline-start:3px solid var(--amber);color:var(--ink)}.chapter-toggle:hover{color:var(--accent-deep);border-color:var(--line-strong)}.chapter-toggle.shut .chapter-count{background:var(--surface)}.chapter-caret{color:var(--amber);font-size:.7em}.chapter-count{margin-inline-start:auto;padding:2px var(--s2);border-radius:var(--radius-pill);background:var(--surface-2);color:var(--muted);font-family:var(--font-body);font-size:.7rem;font-weight:700;font-variant-numeric:tabular-nums}.toc{display:flex;flex-wrap:wrap;gap:0 var(--s4);margin-block:calc(-1 * var(--s2)) var(--s5);padding-block-end:var(--s3);border-block-end:1px solid var(--line);font-size:.9rem}.toc-item{padding-block:var(--s1);color:var(--muted);font-weight:600}.toc-item:hover{text-decoration:none;color:var(--accent-deep)}section[id^=ch-],.content h2,.content h3,.content [data-section-label]{scroll-margin-block-start:calc(var(--topbar-h) + 4rem)}.subject-switch{display:inline-flex;align-items:center;gap:var(--s1)}.subject-switch-glyph{color:var(--amber);font-size:.9rem}.subject-switch select{width:auto;padding:var(--s1) var(--s2);font-weight:600;color:var(--accent-deep);border-radius:var(--radius-pill)}.grade-block{border-block-start:2px solid var(--line-strong);padding-block-start:var(--s4)}.grade-title{font-family:var(--font-display);font-size:1.5rem;color:var(--accent-deep);margin:0 0 var(--s3)}.grade-title:before{content:"◢ ";color:var(--amber);font-family:var(--font-body);font-size:.9em}.identity{display:flex;align-items:center;gap:var(--s2)}.identity-who{display:flex;flex-direction:column;line-height:1.1;text-align:end}.identity-name{font-weight:700;color:var(--accent-deep)}.identity-meta{font-size:.74rem;color:var(--muted)}.identity-logout{padding:var(--s1) var(--s3);font-size:.82rem;font-weight:600;background:transparent;border:1px solid var(--line-strong);border-radius:var(--radius-pill);color:var(--ink-soft);cursor:pointer}.identity-logout:hover{border-color:var(--accent);color:var(--accent-deep)}.portal{min-height:100vh;display:flex;flex-direction:column}.portal-bar{display:flex;align-items:center;gap:var(--s3);padding:var(--s4) clamp(var(--s4),5vw,var(--s7))}.portal-bar .brand{font-family:var(--font-display);font-weight:900;font-size:1.5rem;color:var(--accent-deep);letter-spacing:-.02em}.portal-bar .brand:before{content:"◢ ";color:var(--amber);font-family:var(--font-body)}.portal-hero{flex:1;width:100%;max-width:960px;margin-inline:auto;padding:clamp(var(--s6),8vh,var(--s7)) clamp(var(--s4),5vw,var(--s7)) var(--s7);display:flex;flex-direction:column;gap:var(--s4)}.portal-eyebrow{align-self:start;padding:var(--s1) var(--s3);border-radius:var(--radius-pill);background:var(--amber-weak);color:var(--amber);font-weight:700;font-size:.8rem;letter-spacing:.02em}.portal-headline{margin:0;font-size:clamp(2rem,1.3rem + 3.4vw,3.4rem);line-height:1.08;max-width:18ch}.portal-lead{margin:0;font-size:clamp(1.02rem,.95rem + .5vw,1.22rem);color:var(--ink-soft);max-width:60ch}.portal-cta{display:flex;align-items:center;gap:var(--s4);flex-wrap:wrap;margin-block:var(--s2) var(--s3)}.portal-enter{font-size:1.05rem;padding:var(--s3) var(--s6);border-radius:var(--radius-pill)}.portal-enter-sm{padding:var(--s2) var(--s4);border-radius:var(--radius-pill)}.portal-subjects{color:var(--muted);font-size:.92rem}.portal-features{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--s4);margin-block-start:var(--s4)}.portal-feature{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:var(--s5)}.portal-feature h2{margin:0 0 var(--s2);font-size:1.12rem}.portal-feature p{margin:0;color:var(--ink-soft);font-size:.96rem}.content{flex:1;width:100%;max-width:980px;margin-inline:auto;padding:var(--s7) var(--s5) var(--s6)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:var(--s5);margin-block-end:var(--s4)}.muted{color:var(--muted)}.row{display:flex;align-items:center;gap:var(--s3);flex-wrap:wrap}.stack>*+*{margin-block-start:var(--s3)}.hero{position:relative;overflow:hidden;background:radial-gradient(700px 300px at 100% 0%,rgba(200,134,10,.16),transparent 60%),linear-gradient(135deg,var(--hero-from),var(--hero-to));color:#fff;border:none;border-radius:20px;padding:var(--s7) var(--s6);box-shadow:var(--shadow)}.hero h1{color:#fff;margin:0 0 var(--s2);font-size:clamp(1.9rem,1.3rem + 2.2vw,2.8rem)}.hero p{margin:0;color:#ffffffe0;max-width:46ch}.hero-topic{color:#fff;text-decoration:underline;text-decoration-color:#ffffff73;text-underline-offset:.14em;text-decoration-thickness:2px}.hero-topic:hover{text-decoration-color:#fff}.hero-pending{visibility:hidden}.hero:after{content:"";position:absolute;inset-block-start:-40%;inset-inline-start:-10%;inline-size:360px;block-size:360px;background-image:linear-gradient(rgba(255,255,255,.12) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.12) 1px,transparent 1px);background-size:24px 24px;transform:rotate(8deg);pointer-events:none;-webkit-mask-image:radial-gradient(closest-side,#000,transparent);mask-image:radial-gradient(closest-side,#000,transparent)}.section-title{font-family:var(--font-display);font-weight:700;font-size:1.15rem;color:var(--ink-soft);margin-block:var(--s5) var(--s3);display:flex;align-items:center;gap:var(--s2)}.section-title:before{content:"";flex-shrink:0;inline-size:8px;block-size:8px;border-radius:2px;background:var(--amber);transform:rotate(45deg)}.concept-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:var(--s4)}.concept-card{display:flex;flex-direction:column;gap:var(--s1);margin-block-end:0;position:relative;border-color:var(--line);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.concept-card:hover{text-decoration:none;transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:var(--accent-weak)}.concept-card .code{font-family:var(--font-body);font-weight:700;font-size:.8rem;color:var(--accent);letter-spacing:.04em}.concept-card strong{font-family:var(--font-display);font-size:1.15rem;font-weight:700}.concept-card .go{margin-block-start:var(--s2);color:var(--muted);font-size:.85rem}.concept-header h1{margin:0;font-size:1.6rem}.tabs{display:flex;gap:var(--s4);margin-block-start:var(--s4);border-block-end:1px solid var(--line)}.tabs button{border:none;background:transparent;color:var(--muted);font-weight:700;padding:var(--s2) var(--s1) var(--s3);border-radius:0;position:relative;cursor:pointer}.tabs button:hover{color:var(--ink)}.tabs button.active{color:var(--accent-deep)}.tabs button.active:after{content:"";position:absolute;inset-inline:0;inset-block-end:-1px;block-size:3px;border-radius:3px 3px 0 0;background:linear-gradient(90deg,var(--accent),var(--amber))}.tabs-wrap{flex-wrap:wrap;gap:var(--s2);border-block-end:none}.tabs-wrap button{padding:6px 13px;border-radius:var(--radius-pill);background:var(--surface-2);border:1px solid var(--line)}.tabs-wrap button:hover{background:var(--accent-weak);color:var(--ink)}.tabs-wrap button.active{background:var(--accent);border-color:var(--accent);color:var(--surface)}.tabs-wrap button.active:after{content:none}.tabs-wrap a{padding:6px 13px;border-radius:var(--radius-pill);background:var(--surface-2);border:1px solid var(--line);color:var(--muted);font-weight:700;text-decoration:none}.tabs-wrap a:hover{background:var(--accent-weak);color:var(--ink)}.tabs-wrap a.active{background:var(--accent);border-color:var(--accent);color:var(--surface)}.pager{justify-content:space-between}.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 11px;border-radius:var(--radius-pill);font-size:.8rem;font-weight:700;background:var(--accent-weak);color:var(--accent-deep);border:1px solid transparent}.badge:before{content:"";inline-size:7px;block-size:7px;border-radius:50%;background:currentColor;opacity:.7}.badge.plain:before{display:none}.badge.ok{background:var(--ok-weak);color:var(--ok)}.badge.warn{background:var(--warn-weak);color:var(--warn)}.badge.danger{background:var(--danger-weak);color:var(--danger)}button,.btn{font:inherit;font-weight:700;cursor:pointer;border:1px solid var(--line-strong);background:var(--surface);color:var(--ink);padding:var(--s2) var(--s4);border-radius:var(--radius-sm);transition:transform .12s ease,box-shadow .12s ease,background .12s ease}button:hover,.btn:hover{text-decoration:none;box-shadow:var(--shadow-sm)}button:active,.btn:active{transform:translateY(1px)}button.primary,.btn.primary{background:linear-gradient(180deg,var(--accent),var(--accent-deep));color:var(--on-accent);border-color:var(--accent-deep);box-shadow:0 2px 8px #1e3b3047}button.primary:hover,.btn.primary:hover{box-shadow:0 4px 14px #1e3b305c}button:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}input,textarea,select{font:inherit;width:100%;padding:var(--s2) var(--s3);border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--surface-2);color:var(--ink);transition:border-color .12s ease,box-shadow .12s ease}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-weak)}.row input,.row textarea,.row select{flex:1 1 auto;width:auto;min-width:0}.ltr{direction:ltr;unicode-bidi:isolate;display:inline-block}.katex{direction:ltr;unicode-bidi:isolate}.nobr{white-space:nowrap}.katex-display{max-width:100%;overflow-x:auto}.prose{white-space:pre-wrap;word-break:break-word}.prose.markdown{white-space:normal}.prose.markdown>:first-child{margin-block-start:0}.prose.markdown>:last-child{margin-block-end:0}.practice-fig{display:block;max-width:100%;height:auto;background:#fff;border:1px solid var(--border, #ddd);border-radius:8px;padding:6px;margin:4px 0}.practice-part{border:1px solid var(--border, #e5e5e5);border-radius:8px;padding:10px 12px}.row.wrap{flex-wrap:wrap}button.link{background:none;border:none;color:var(--accent);padding:0;cursor:pointer;text-decoration:underline;align-self:flex-start}.prose h1,.prose h2,.prose h3,.prose h4{font-family:var(--font-display);color:var(--accent-deep);line-height:1.25;margin-block:var(--s4) var(--s2)}.prose h1{font-size:1.5rem}.prose h2{font-size:1.25rem}.prose h3{font-size:1.08rem}.prose h4{font-size:1rem}.prose p{margin-block:var(--s2)}.prose ul,.prose ol{margin-block:var(--s2);padding-inline-start:1.5em}.prose li{margin-block:2px}.prose strong{font-weight:700;color:var(--ink)}.prose blockquote{margin-block:var(--s2);padding:var(--s1) var(--s3);border-inline-start:3px solid var(--line-strong);color:var(--ink-soft);background:var(--surface-2);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.9em;background:var(--surface-2);padding:1px 5px;border-radius:5px}.prose pre{background:var(--surface-2);padding:var(--s3);border-radius:var(--radius-sm);overflow-x:auto}.prose pre code{background:none;padding:0}.prose hr{border:none;border-block-start:1px solid var(--line);margin-block:var(--s4)}.prose a{color:var(--accent);text-decoration:underline}.prose table{border-collapse:collapse;inline-size:100%;margin-block:var(--s3);font-size:.95rem}.prose th,.prose td{border:1px solid var(--line-strong);padding:6px 10px;text-align:start}.prose th{background:var(--surface-2);font-weight:700}.notice{border-inline-start:4px solid var(--accent);background:var(--accent-weak);padding:var(--s3) var(--s4);border-radius:var(--radius-sm)}.notice.danger{border-inline-start-color:var(--danger);background:var(--danger-weak)}.notice.warn{border-inline-start-color:var(--amber);background:var(--amber-weak)}.session-expired{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:var(--s3);margin:var(--s3) auto;max-width:640px}.ask-thread{gap:var(--s5)}.ask-turn{gap:var(--s2)}.ask-turn+.ask-turn{border-block-start:1px solid var(--line);padding-block-start:var(--s4)}.ask-question{margin:0;border-inline-start:3px solid var(--accent);background:var(--surface-2);border-radius:var(--radius-sm);padding:var(--s2) var(--s3);color:var(--ink-soft);font-weight:600}.chips{flex-wrap:wrap}.chip{border:1px solid var(--amber-weak);background:var(--amber-weak);color:var(--warn);border-radius:var(--radius-pill);padding:5px 13px;font-size:.9rem;font-weight:600;transition:background .12s ease}.chip:hover{background:var(--chip-hover)}.hotspot{display:inline;font:inherit;font-weight:600;color:var(--accent-deep);background:var(--accent-weak);border:0;border-block-end:1.5px solid var(--accent);border-radius:4px;padding-inline:3px;margin:0;text-align:inherit;cursor:pointer;transition:background .12s ease,color .12s ease}.hotspot:after{content:" ↗";font-size:.72em;vertical-align:super;opacity:.7}.hotspot:hover,.hotspot:focus-visible{background:var(--accent);color:var(--surface);outline:none}.hotspot-static,.hotspot-static:hover{cursor:default;background:var(--accent-weak);color:var(--accent-deep)}.hotspot-static:after{content:none}.term-explain-host{position:relative}.term-explain-hint{display:inline-flex;align-items:center;gap:var(--s2);margin:0 0 var(--s3);padding:var(--s2) var(--s3);border-radius:var(--radius-sm);background:var(--accent-weak);color:var(--accent-deep);font-size:.9rem}.term-explain-hint-text{margin:0}.term-explain-hint.with-style{display:flex;flex-wrap:wrap;gap:var(--s2) var(--s3)}.term-explain-hint.with-style .term-explain-hint-text{flex:1 1 18rem}.style-picker{display:inline-flex;align-items:center;gap:var(--s1);flex-wrap:wrap}.style-picker-label{margin-inline-end:var(--s1);opacity:.8}.style-picker-btn{padding:var(--s1) var(--s3);border:1px solid transparent;border-radius:var(--radius-pill);background:var(--surface);color:var(--accent-deep);cursor:pointer;font:inherit;font-size:.85rem;font-weight:600}.style-picker-btn:hover{border-color:var(--accent)}.style-picker-btn.active{background:var(--accent);color:var(--on-accent)}.term-explain-hint-close{font-size:1.1rem;line-height:1;color:inherit;background:none;border:0;padding:0;cursor:pointer;opacity:.65}.term-explain-hint-close:hover,.term-explain-hint-close:focus-visible{opacity:1;outline:none}.term-explain-popover{position:fixed;z-index:60;inline-size:340px;max-inline-size:calc(100vw - 16px);background:var(--surface);border:1px solid var(--line, rgba(21, 25, 43, .12));border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);padding:var(--s3)}.term-explain-head{display:flex;align-items:baseline;justify-content:space-between;gap:var(--s2);margin-block-end:var(--s2)}.term-explain-close{font-size:1.2rem;line-height:1;color:var(--ink-soft, #667);background:none;border:0;cursor:pointer}.term-explain-body{font-size:.95rem}.term-explain-note{margin:0;color:var(--ink-soft, #667)}.term-explain-more{margin-block-start:var(--s2);font:inherit;font-weight:600;color:var(--accent-deep);background:none;border:0;padding:0;cursor:pointer}.term-explain-more:hover{text-decoration:underline}.hotspot-explain{display:inline;font-weight:inherit;line-height:inherit;color:inherit;background:transparent;cursor:pointer;border-block-end:1px dotted var(--accent);border-radius:0;padding-block:0;padding-inline:1px;margin:0;vertical-align:baseline}.hotspot-explain:after{content:none}.hotspot-explain:hover,.hotspot-explain:focus-visible{background:var(--accent-weak);color:var(--accent-deep);outline:none}.explain-dash{margin-block-start:var(--s4)}.explain-dash-table{inline-size:100%;border-collapse:collapse}.explain-dash-table th,.explain-dash-table td{text-align:start;padding:var(--s2) var(--s3);border-block-end:1px solid var(--line, rgba(21, 25, 43, .1))}.sr-only{position:absolute;inline-size:1px;block-size:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.generating-note{display:flex;align-items:center;gap:var(--s2);margin-block-start:var(--s3);color:var(--muted);font-size:.9rem;font-style:italic;opacity:0;transition:opacity .5s ease}.generating-note.show{opacity:1}.generating-mark{inline-size:10px;block-size:10px;border-radius:50%;flex:none;background:radial-gradient(circle at 32% 30%,var(--amber),var(--accent) 90%);animation:orbit-pulse 1.5s ease-in-out infinite}@keyframes orbit-pulse{0%,to{transform:scale(.85);box-shadow:0 0 #c8860a73}50%{transform:scale(1.15);box-shadow:0 0 0 6px #c8860a00}}.section-toggles{gap:var(--s2)}.section-toggles button{display:inline-flex;align-items:center;gap:var(--s2)}.section-toggles button:before{content:"›";font-weight:700;color:var(--muted);transition:transform .18s ease}.section-toggles button[aria-pressed=true]:before{content:"›";transform:rotate(90deg);color:currentColor}.section-badge{font-family:var(--font-display);font-size:.95rem;letter-spacing:.01em}.pitfalls-recap{border-inline-start:4px solid var(--amber);background:var(--surface-2)}.review-card{border-block-start:3px solid var(--amber)}.review-head{align-items:center;gap:var(--s3)}.review-glyph{font-size:1.4rem;color:var(--amber);line-height:1;filter:drop-shadow(0 1px 0 rgba(200,134,10,.25))}.review-item{display:flex;gap:var(--s3);align-items:center;justify-content:space-between;padding:var(--s3) var(--s4);border:1px solid var(--warn-weak);border-inline-start:4px solid var(--amber);border-radius:var(--radius-sm);background:var(--surface-2);transition:box-shadow .15s ease,transform .15s ease}.review-item:hover{box-shadow:var(--shadow-sm);transform:translate(2px)}.review-item-body{gap:var(--s2);min-inline-size:0}.review-go{flex:none}.history-row{gap:var(--s2);align-items:center;padding:var(--s1) 0;border-block-end:1px solid var(--line)}.mcq+.mcq{margin-block-start:var(--s5);padding-block-start:var(--s5);border-block-start:1px solid var(--line)}.mcq-step{margin:var(--s4) 0 0;font-family:var(--font-display);font-size:.85rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}.mcq-stem{display:flex;gap:var(--s3);align-items:baseline}.mcq-stem .prose{margin:0;font-weight:600}.mcq-num{flex:none;font-family:var(--font-display);font-size:1.1rem;font-weight:800;color:var(--accent);min-inline-size:1.4em}.mcq-options{gap:var(--s2)}.mcq-option{display:flex;gap:var(--s3);align-items:center;padding:var(--s2) var(--s3);border:1.5px solid var(--line);border-radius:var(--radius-sm);cursor:pointer;transition:border-color .14s ease,background .14s ease,transform .14s ease}.mcq-option:hover{border-color:var(--line-strong);transform:translate(2px)}.mcq-option .prose{margin:0}.mcq-letter{flex:none;display:grid;place-items:center;inline-size:1.7em;block-size:1.7em;border-radius:50%;border:1.5px solid var(--line-strong);background:var(--surface);font-weight:800;font-size:.85rem;color:var(--muted);transition:all .14s ease}.mcq-option.selected{border-color:var(--accent);background:var(--accent-weak)}.mcq-option.selected .mcq-letter{border-color:var(--accent);background:var(--accent);color:var(--on-accent)}.mcq-option.spent{opacity:.6;cursor:default}.mcq-option.ok{border-color:var(--ok);background:var(--ok-weak);cursor:default;animation:pop .32s cubic-bezier(.22,1.4,.5,1) both}.mcq-option.ok .mcq-letter{border-color:var(--ok);background:var(--ok);color:var(--on-accent)}.mcq-option.danger{border-color:var(--danger);background:var(--danger-weak);cursor:default}.mcq-option.danger .mcq-letter{border-color:var(--danger);background:var(--danger);color:var(--on-accent)}@keyframes pop{0%{transform:scale(.97)}60%{transform:scale(1.015)}to{transform:scale(1)}}.mcq-verdict{display:flex;gap:var(--s3);align-items:flex-start;padding:var(--s3) var(--s4);border-radius:var(--radius-sm);border-inline-start:4px solid;animation:rise .4s cubic-bezier(.22,1,.36,1) both}.mcq-verdict.ok{background:var(--ok-weak);border-color:var(--ok);color:var(--ok)}.mcq-verdict.danger{background:var(--danger-weak);border-color:var(--danger);color:var(--danger)}.mcq-verdict .prose{margin:0;color:var(--ink-soft)}.mcq-verdict-icon{font-size:1.2rem;font-weight:800;line-height:1.2}.explore-prompt{display:flex;flex-direction:column;align-items:center;gap:var(--s3);text-align:center;padding:var(--s5) var(--s4)}.explore-glyph{font-size:1.8rem;color:var(--amber);opacity:.85}.explore-prompt p{margin:0;max-inline-size:34ch}.mcq-edit-btn{margin-inline-start:auto;padding:3px 10px;font-size:.82rem}.mcq-editor{padding:var(--s4);border:1px dashed var(--accent);border-radius:var(--radius-sm);background:var(--accent-weak)}.mcq-edit-row{gap:var(--s2);padding:var(--s2);border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface)}.mcq-edit-correct{display:inline-flex;align-items:center;gap:4px;font-size:.8rem;font-weight:700;color:var(--ok);white-space:nowrap;cursor:pointer}.mcq-edit-correct input{inline-size:auto}.mcq-edit-misc{padding-inline-start:var(--s5)}.mcq-edit-code{inline-size:11rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85rem}.followup-q{inline-size:100%;text-align:start;font-weight:600;color:var(--accent-deep);background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:var(--s2) var(--s3);cursor:pointer;display:flex;gap:var(--s2);align-items:baseline;transition:background .14s ease,border-color .14s ease}.followup-q:hover{background:var(--accent-weak)}.followup-q[aria-expanded=true]{border-color:var(--accent);background:var(--accent-weak)}.followup-caret{color:var(--accent);font-size:.8em;transition:transform .18s ease}.regen-panel{display:flex;flex-direction:column;gap:var(--s2);margin-block-start:var(--s2);padding:var(--s4);border:1px dashed var(--line-strong);border-radius:var(--radius-sm);background:var(--surface-2)}.regen-panel>strong{color:var(--accent-deep)}.regen-panel>.row{flex-direction:row}.diff{padding:var(--s3);border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);line-height:1.7}.diff .diff-del{text-decoration:line-through;background:var(--danger-weak);color:var(--danger);border-radius:3px}.diff .diff-add{text-decoration:none;background:var(--ok-weak);color:var(--ok);border-radius:3px}.diff-legend{gap:var(--s2)}.diff-chip{padding:2px 9px;border-radius:var(--radius-pill);font-size:.8rem;font-weight:600}.diff-chip.diff-del{background:var(--danger-weak);color:var(--danger)}.diff-chip.diff-add{background:var(--ok-weak);color:var(--ok)}.lesson-editor-block{padding:var(--s2) 0 var(--s3);border-bottom:1px solid var(--line)}.lesson-editor-block:last-of-type{border-bottom:none}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 var(--s3);border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface);padding:var(--s3)}.compare-head{font-size:.85rem;font-weight:600;padding-bottom:var(--s2)}.compare-pair{display:contents}.compare-cell{padding-block:var(--s2);padding-inline:var(--s3) var(--s2);border-inline-start:3px solid transparent;line-height:1.7}.compare-cell>span{display:block;white-space:pre-wrap}.compare-pair[data-kind=changed] .compare-cell{border-inline-start-color:var(--warn);background:var(--warn-weak)}.compare-pair[data-kind=removed] .compare-cell:first-child{border-inline-start-color:var(--danger);background:var(--danger-weak)}.compare-pair[data-kind=added] .compare-cell:last-child{border-inline-start-color:var(--ok);background:var(--ok-weak)}.compare-cell.compare-empty{background:repeating-linear-gradient(135deg,transparent,transparent 6px,var(--line) 6px,var(--line) 7px);opacity:.35;min-height:var(--s4)}.compare-foot{gap:var(--s2);align-items:center;flex-wrap:wrap}@media (max-width: 720px){.compare-grid{grid-template-columns:1fr}}.big-number{font-family:var(--font-display);font-size:2.8rem;font-weight:900;color:var(--accent-deep);line-height:1.05}.progress{inline-size:100%;block-size:10px;background:var(--line);border-radius:var(--radius-pill);overflow:hidden}.progress-fill{block-size:100%;background:linear-gradient(90deg,var(--accent),var(--amber));border-radius:var(--radius-pill);transition:inline-size .5s cubic-bezier(.22,1,.36,1)}.mastery-row{padding-block:var(--s2);border-block-end:1px solid var(--line)}.mastery-row:last-child{border-block-end:none}.coverage-map{display:flex;flex-wrap:wrap;gap:var(--s2)}.cov-tile{inline-size:52px;block-size:40px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-sm);font-weight:700;font-size:.8rem;color:var(--on-accent);border:1px solid rgba(0,0,0,.06);transition:transform .12s ease}.cov-tile:hover{text-decoration:none;transform:translateY(-2px)}.cov-tile.mastered{background:var(--ok)}.cov-tile.learning{background:var(--amber)}.cov-tile.untouched{background:var(--cov-untouched);color:var(--ink)}.cov-swatch{inline-size:14px;block-size:14px;border-radius:4px;display:inline-block}.cov-swatch.mastered{background:var(--ok)}.cov-swatch.learning{background:var(--amber)}.cov-swatch.untouched{background:var(--cov-untouched)}.skeleton{border-radius:var(--radius-sm);background:linear-gradient(100deg,var(--surface-2) 30%,var(--skeleton-hi) 50%,var(--surface-2) 70%);background-size:200% 100%;animation:shimmer 1.3s linear infinite}@keyframes shimmer{to{background-position:-200% 0}}.empty{text-align:center;color:var(--muted);padding:var(--s6)}.empty .glyph{font-size:2rem;opacity:.5}.caret:after{content:"▌";margin-inline-start:2px;color:var(--accent);animation:blink 1s steps(2,start) infinite}@keyframes blink{to{visibility:hidden}}.thinking-dots{display:inline-flex;gap:4px;padding-block:.5em}.thinking-dots i{inline-size:6px;block-size:6px;border-radius:50%;background:currentColor;animation:thinking-dot 1.2s ease-in-out infinite}.thinking-dots i:nth-child(2){animation-delay:.2s}.thinking-dots i:nth-child(3){animation-delay:.4s}@keyframes thinking-dot{0%,60%,to{opacity:.25;transform:none}30%{opacity:1;transform:translateY(-3px)}}@media (prefers-reduced-motion: reduce){.thinking-dots i{animation-name:thinking-dot-fade;animation-duration:2.4s}}@keyframes thinking-dot-fade{0%,60%,to{opacity:.25}30%{opacity:1}}@keyframes rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.reveal{animation:rise .5s cubic-bezier(.22,1,.36,1) both}.concept-grid>*{animation:rise .45s cubic-bezier(.22,1,.36,1) both}.concept-grid>*:nth-child(2){animation-delay:.05s}.concept-grid>*:nth-child(3){animation-delay:.1s}.concept-grid>*:nth-child(4){animation-delay:.15s}.concept-grid>*:nth-child(5){animation-delay:.2s}.concept-grid>*:nth-child(n+6){animation-delay:.25s}.skip-link{position:absolute;inset-block-start:-48px;inset-inline-start:var(--s3);background:var(--accent-deep);color:var(--on-accent);padding:var(--s2) var(--s4);border-radius:var(--radius-sm);z-index:100;transition:inset-block-start .15s ease}.skip-link:focus{inset-block-start:var(--s2);text-decoration:none}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important}}@media (max-width: 640px){.topbar{padding-inline:var(--s4);flex-wrap:wrap}.content{padding:var(--s5) var(--s4)}}.block-list-body{display:contents}.block-list-body>*+*{margin-block-start:var(--s3)}.block-list-body.learner>*+*:has(>.prose.markdown>:is(h2,h3,h4):first-child){margin-block-start:var(--s4)}.card-deck{display:flex;flex-direction:column;gap:var(--s4)}.card-deck-card{background:var(--surface);border:1px solid var(--line-strong);border-radius:var(--radius);padding:var(--s5);box-shadow:0 1px 2px #0000000a}.card-deck-arrow{flex:0 0 auto;display:inline-flex;align-items:center;justify-content:center;width:2.4rem;height:2.4rem;border:1px solid var(--line-strong);background:var(--surface);border-radius:var(--radius-pill);color:var(--accent);cursor:pointer}.card-deck-arrow:disabled{opacity:.35;cursor:default}[dir=rtl] .card-deck-arrow{transform:scaleX(-1)}.card-deck-nav{display:flex;align-items:center;justify-content:center;gap:var(--s3)}.card-deck-dots{display:inline-flex;gap:8px}.card-deck-dot{width:12px;height:12px;padding:0;border:none;border-radius:50%;background:var(--line-strong);cursor:pointer;transition:background .15s ease,transform .15s ease}.card-deck-dot:hover{transform:scale(1.3);background:var(--accent-weak)}.card-deck-dot.on{background:var(--accent)}.card-deck-pos{min-width:3.5rem;text-align:center;color:var(--muted);font-size:.85rem}.gen-form input{flex:1 1 260px;min-inline-size:200px}.gen-bilingual{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}.gen-bilingual>.gen-he:only-child{grid-column:1 / -1}.gen-tr{color:var(--muted);border-inline-start:2px solid var(--line);padding-inline-start:12px}@media (max-width: 640px){.gen-bilingual{grid-template-columns:1fr}.gen-tr{border-inline-start:none;border-top:1px solid var(--line);padding-inline-start:0;padding-top:8px}}.gen-part{background:var(--surface-weak, #f7f8fb)}.gen-options{margin:0;padding-inline-start:22px}.gen-options li{margin:4px 0}.gen-keys{font-size:.85rem;color:var(--muted);border-top:1px dashed var(--line);padding-top:8px;display:flex;flex-direction:column;gap:3px}.gen-meta{color:var(--muted);font-size:.8rem;margin-inline-start:auto}.gen-notes{font-size:.9rem}.gen-trace-round>summary,.gen-solution>summary{cursor:pointer;padding:6px 0;font-weight:600}.gen-history-summary{cursor:pointer;list-style:none}.gen-history-summary::-webkit-details-marker{display:none}.gen-history-card[open]>.gen-history-summary{margin-block-end:var(--s3)}.gen-regen{border:1px dashed var(--line);border-radius:var(--radius-sm);padding:var(--s3);font-size:.9rem}.gen-regen-seed select{margin-inline-start:6px}.gen-choose{padding:2px 8px;font-size:.8rem;border-radius:var(--radius-pill);background:transparent}.gen-choose.is-chosen{background:var(--amber-weak);border-color:var(--amber);color:var(--amber)}.gen-group-summary{cursor:pointer;list-style:none}.gen-group-summary::-webkit-details-marker{display:none}.gen-group-card[open]>.gen-group-summary{margin-block-end:var(--s3)}.gen-group-focus{padding:2px 10px;font-size:.8rem;border-radius:var(--radius-pill)}.gen-group-runs{border-inline-start:2px solid var(--line);padding-inline-start:var(--s3)}.gen-filter-bar{align-items:center;justify-content:space-between;padding:var(--s2) var(--s3);background:var(--surface-2);border-radius:var(--radius-sm)}.gen-group-toggle{font-size:.9rem}.gen-check{gap:8px;align-items:flex-start;font-size:.9rem}.gen-check input{margin-top:3px;flex:0 0 auto}.gen-steer{border:1px solid var(--accent);border-radius:var(--radius-sm);padding:var(--s3);font-size:.9rem}.gen-steer-input{inline-size:100%}.gen-steer-badge{background:var(--accent-weak);color:var(--accent-deep)}.gen-steer-record{border-inline-start:3px solid var(--accent)}.gen-steer-list{margin:0;padding-inline-start:1.4em}.gen-judge-img{display:flex;flex-direction:column;gap:4px;margin:4px 0}.gen-judge-img .practice-fig{max-width:100%;border:1px solid var(--line);border-radius:8px;background:#fff}.gen-raw{white-space:pre-wrap;word-break:break-word;font-size:.78rem;line-height:1.5;max-height:460px;overflow:auto;background:var(--surface-weak, #f7f8fb);border:1px solid var(--line);border-radius:8px;padding:10px 12px;margin:4px 0}.calib-table{width:100%;border-collapse:collapse;font-size:.9rem}.calib-table th,.calib-table td{padding:var(--s2) var(--s3);border-bottom:1px solid var(--line);text-align:start;vertical-align:middle}.calib-table thead th{border-bottom:2px solid var(--line-strong);color:var(--muted);font-weight:600;white-space:nowrap}.calib-table tbody tr:hover{background:var(--surface-2)}.ig-bleed{direction:ltr;--ig-width: min(1760px, calc(100vw - var(--s7)));width:var(--ig-width);margin-inline:calc(50% - var(--ig-width) / 2)}.ig-topbar{display:flex;align-items:center;gap:var(--s4);flex-wrap:wrap;margin-block-end:var(--s3)}.ig-field{display:flex;flex-direction:column;gap:var(--s1);font-size:.85rem;color:var(--muted);font-weight:600}.ig-field-theme{flex:0 1 14rem}.ig-field-title{flex:1 1 22rem}.ig-settings{margin-block-end:var(--s4)}.ig-console{display:flex;align-items:flex-start;gap:var(--s4)}.ig-tree,.ig-rail,.ig-list{position:sticky;top:4.5rem;max-height:calc(100vh - 6rem);overflow-y:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:var(--s3);flex:0 0 auto}.ig-tree{inline-size:220px}.ig-list{inline-size:240px}.ig-rail{inline-size:48px;display:flex;flex-direction:column;align-items:center;gap:var(--s2);padding:var(--s2) 0}.ig-rail-sep{inline-size:24px;border:none;border-top:1px solid var(--line);margin:var(--s1) 0}.ig-tree-head,.ig-list-head{display:flex;align-items:center;justify-content:space-between;gap:var(--s2);margin-block-end:var(--s2)}.ig-panel-title{font-weight:700;color:var(--ink);font-size:.92rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ig-count{color:var(--muted);font-weight:600;font-size:.85rem}.ig-icon-btn{display:inline-flex;align-items:center;justify-content:center;inline-size:32px;block-size:32px;padding:0;border:1px solid transparent;background:transparent;color:var(--ink-soft);border-radius:var(--radius-sm)}.ig-icon-btn:hover:not(:disabled){background:var(--surface-2);border-color:var(--line);box-shadow:none}.ig-search{display:flex;align-items:center;gap:var(--s1);padding-inline:var(--s2);border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--surface-2);color:var(--muted);margin-block-end:var(--s2)}.ig-search input{border:none;background:transparent;padding-inline:0}.ig-search input:focus{box-shadow:none}.ig-new-run{display:flex;align-items:center;justify-content:center;gap:var(--s1);inline-size:100%;font-size:.88rem;border-style:dashed;color:var(--accent-deep);margin-block-start:var(--s2)}.ig-theme-list{list-style:none;padding:0;margin:var(--s2) 0 0}.ig-theme{display:flex;align-items:center;justify-content:space-between;gap:var(--s2);inline-size:100%;text-align:start;border:1px solid transparent;background:transparent;font-weight:600;font-size:.92rem;padding:var(--s2);border-radius:var(--radius-sm)}.ig-theme:hover{background:var(--surface-2);box-shadow:none}.ig-theme.active{background:var(--accent-weak);color:var(--accent-deep)}.ig-theme.active .ig-count{color:var(--accent-deep)}.ig-theme-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ig-rail-badge{inline-size:32px;block-size:32px;padding:0;font-size:.75rem;font-weight:700;color:var(--ink-soft);background:transparent;border:1px solid transparent;border-radius:var(--radius-sm)}.ig-rail-badge:hover{background:var(--surface-2);box-shadow:none}.ig-rail-badge.active{background:var(--accent-weak);color:var(--accent-deep);border-color:var(--accent-weak)}.ig-list-items{list-style:none;padding:0;margin:0}.ig-list-item{display:flex;align-items:center;gap:var(--s2);inline-size:100%;text-align:start;padding:var(--s2);border:1px solid transparent;background:transparent;border-radius:var(--radius-sm);font-weight:500}.ig-list-item:hover{background:var(--surface-2);box-shadow:none}.ig-list-item.active{background:var(--accent-weak);border-color:var(--accent-weak)}.ig-list-text{display:flex;flex-direction:column;gap:2px;min-inline-size:0}.ig-list-title{font-weight:700;font-size:.9rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ig-list-sub{font-size:.76rem;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ig-list-empty{color:var(--muted);font-size:.85rem;padding:var(--s2)}.ig-thumb{flex:0 0 auto;inline-size:34px;block-size:26px;border-radius:4px;border:1px solid var(--line);object-fit:cover;background:#fff;display:inline-flex;align-items:center;justify-content:center;color:var(--muted)}.ig-thumb-error{background:var(--danger-weak);border-color:var(--danger-weak);color:var(--danger)}.ig-thumb-pending{background:var(--accent-weak);border-color:var(--accent-weak);color:var(--accent-deep)}.ig-work{flex:1 1 auto;min-inline-size:min(480px,100%);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:var(--s4)}.ig-work-empty{color:var(--muted);display:flex;align-items:center;justify-content:center;min-block-size:12rem}.ig-work-head{display:flex;align-items:center;justify-content:space-between;gap:var(--s3);flex-wrap:wrap;margin-block-end:var(--s3)}.ig-crumbs{display:flex;align-items:center;gap:var(--s2);min-inline-size:0}.ig-crumb-theme{color:var(--muted);font-size:.9rem}.ig-crumb-sep{color:var(--line-strong)}.ig-crumb-title{font-family:var(--font-display);font-size:1.05rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ig-pager{display:flex;align-items:center;gap:var(--s1)}.ig-pager-count{color:var(--muted);font-size:.85rem;white-space:nowrap}.ig-figure{border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--surface-2);padding:var(--s3);display:flex;flex-direction:column;align-items:center;gap:var(--s2)}.ig-figure img{max-inline-size:100%;max-block-size:62vh;object-fit:contain;background:#fff;border-radius:4px}.ig-figure-empty{color:var(--muted);min-block-size:14rem;justify-content:center}.ig-figure-meta{font-size:.8rem;text-align:center}.ig-actions{display:flex;align-items:center;gap:var(--s2);flex-wrap:wrap;margin-block:var(--s3)}.ig-actions button{display:inline-flex;align-items:center;gap:var(--s1)}.ig-actions-gap{flex:1 1 auto}.ig-danger-btn{color:var(--danger);border-color:transparent;background:transparent}.ig-danger-btn:hover:not(:disabled){background:var(--danger-weak);border-color:var(--danger-weak);box-shadow:none}.ig-pre{white-space:pre-wrap;word-break:break-word;max-block-size:24rem;overflow:auto;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm);padding:var(--s3);font-size:.82rem}.ig-error{color:var(--danger)}.ig-warn{color:var(--warn)}.ig-spin{animation:ig-spin 1s linear infinite}@keyframes ig-spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){.ig-spin{animation:none}}@media (max-width: 640px){.ig-bleed{--ig-width: 100%;margin-inline:0}.ig-console{flex-wrap:wrap}.ig-rail{inline-size:100%;flex-direction:row;flex-wrap:wrap;position:static}.ig-rail-sep{display:none}}.ig-figure-open{display:block;padding:0;border:none;background:transparent;cursor:zoom-in;max-inline-size:100%}.ig-figure-open:hover{box-shadow:none}.ig-figure-open:active{transform:none}.ig-versions{display:flex;align-items:center;gap:var(--s3);flex-wrap:wrap;margin-block:var(--s3)}.ig-chips{display:flex;gap:var(--s1)}.ig-chip{padding:var(--s1) var(--s3);font-size:.82rem;font-weight:700;color:var(--ink-soft);background:var(--surface-2);border:1px solid var(--line-strong);border-radius:var(--radius-sm)}.ig-chip.active{color:var(--accent-deep);background:var(--accent-weak);border-color:var(--accent);box-shadow:inset 0 0 0 2px var(--accent)}.ig-chip:disabled{opacity:.55}.ig-inspector{border-top:1px solid var(--line);padding-block-start:var(--s3)}.ig-tabbar{display:flex;align-items:center;justify-content:space-between;gap:var(--s3)}.ig-copy{display:inline-flex;align-items:center;gap:var(--s2);font-size:.8rem}.ig-mono{font-family:ui-monospace,SFMono-Regular,SF Mono,Menlo,Consolas,monospace;font-size:.82rem}.ig-run-meta{font-size:.78rem;margin-block-start:var(--s3)}.ig-item{padding-block-start:var(--s3)}.ig-statement{white-space:pre-wrap;overflow-wrap:anywhere;max-inline-size:78ch}.ig-part{display:flex;gap:var(--s3);padding-block:var(--s2);border-top:1px solid var(--line)}.ig-part-label{flex:0 0 auto;inline-size:1.6rem;block-size:1.6rem;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:var(--surface-2);border:1px solid var(--line-strong);font-weight:700;font-size:.8rem}.ig-part-body{min-inline-size:0;max-inline-size:78ch}.ig-part-body p{margin-block:var(--s1);white-space:pre-wrap;overflow-wrap:anywhere}.ig-options{margin:var(--s1) 0;padding-inline-start:var(--s5)}.ig-answer-tag{display:inline-block;padding:1px 8px;border-radius:var(--radius-pill);background:var(--ok-weak);color:var(--ok);font-size:.72rem;font-weight:700;text-transform:uppercase}.ig-lightbox{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#15192be0;display:flex;overflow:hidden;overscroll-behavior:contain}.ig-lightbox-stage{flex:1 1 auto;margin-block-start:3rem;display:flex;align-items:center;justify-content:center;overflow:hidden}.ig-lightbox-bar{position:absolute;inset-block-start:0;inset-inline:0;display:flex;align-items:center;gap:var(--s2);padding:var(--s2) var(--s3);background:#15192b99;color:#fff}.ig-lightbox-caption{flex:1 1 auto;font-size:.8rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ig-lightbox-zoom{font-size:.8rem;font-variant-numeric:tabular-nums}.ig-lightbox-bar button{background:#ffffff1a;color:#fff;border-color:#ffffff40;padding:var(--s1) var(--s3);display:inline-flex;align-items:center}.ig-lightbox-img{transform-origin:center;cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;background:#fff}.ig-lightbox-img:active{cursor:grabbing}.ig-newrun{flex:1 1 auto;min-inline-size:min(480px,100%);min-block-size:18rem;background:var(--surface);border:1px solid var(--accent-weak);border-radius:var(--radius);box-shadow:var(--shadow);padding:var(--s4)}.ig-newrun-head{display:flex;align-items:center;justify-content:space-between;margin-block-end:var(--s3)}.ig-newrun-fields{display:flex;align-items:flex-end;gap:var(--s3);flex-wrap:wrap}.ig-work-pending{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--s2);text-align:center;min-block-size:18rem;color:var(--ink-soft)}.ig-chip-budget{display:inline-flex;align-items:center;gap:var(--s2);padding:var(--s1) var(--s3);border:1px solid var(--line);border-radius:var(--radius-pill);background:var(--surface);font-size:.85rem;font-variant-numeric:tabular-nums}.ig-meter{inline-size:4rem;block-size:6px;border-radius:var(--radius-pill);background:var(--line);overflow:hidden}.ig-meter>span{display:block;block-size:100%}.ig-meter-ok>span{background:var(--ok)}.ig-meter-warn>span{background:var(--warn)}.ig-meter-danger>span{background:var(--danger)}.ig-tree-section{margin-block-start:var(--s4);padding-block-start:var(--s3);border-top:1px solid var(--line)}.ig-section-label{display:block;font-size:.76rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}.ig-rail-badge.ig-rail-slice,.ig-rail-badge.ig-rail-slice:hover{background:var(--amber-weak);color:var(--warn);border-color:var(--amber);font-size:.68rem}.ig-stage{font-weight:700;color:var(--accent-deep)}.overlay-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;background:#15192bb8;display:flex;align-items:center;justify-content:center;padding:var(--s4);overscroll-behavior:contain}.overlay-box{background:var(--surface);border:1px solid var(--line-strong);border-radius:10px;max-block-size:calc(100vh - 2 * var(--s4));inline-size:min(920px,100%);display:flex;flex-direction:column;overflow:hidden}.overlay-head{display:flex;align-items:center;justify-content:space-between;gap:var(--s3);padding:var(--s3) var(--s4);border-block-end:1px solid var(--line)}.overlay-title{margin:0;font-size:1.05rem}.overlay-body{padding:var(--s4);overflow-y:auto}.prompt-peek-open{background:none;border:1px dashed var(--line-strong);color:var(--muted);border-radius:6px;padding:2px var(--s2);font-size:.85rem;cursor:pointer}.prompt-peek-open:hover{color:var(--ink);border-color:var(--muted)}.prompt-facts{margin:0;padding-inline-start:var(--s4);color:var(--muted);font-size:.9rem}.prompt-pane-head{justify-content:space-between}.prompt-text{display:block;margin:0;padding:var(--s3);background:var(--surface-2);border:1px solid var(--line);border-radius:6px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.82rem;line-height:1.5;white-space:pre-wrap;overflow-wrap:anywhere;max-block-size:40vh;overflow-y:auto}.prompt-profile{border-collapse:collapse;inline-size:100%;font-size:.9rem}.prompt-profile th{text-align:start;vertical-align:top;padding:var(--s2) var(--s3) var(--s2) 0;inline-size:14rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-weight:500;color:var(--muted);border-block-end:1px solid var(--line)}.prompt-profile td{padding:var(--s2) 0;border-block-end:1px solid var(--line);overflow-wrap:anywhere}.prompt-profile td.ltr{display:table-cell}.figure-slot{margin:var(--s4) 0;display:flex;flex-direction:column;gap:var(--s2);align-items:center}.figure-slot img{max-inline-size:100%;block-size:auto;border:1px solid var(--line);border-radius:8px;background:var(--surface)}.figure-slot-hint,.figure-slot-error{display:block;font-size:.82rem;color:var(--muted);text-align:center}.figure-slot-error{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow-wrap:anywhere}.figure-slot-tools{display:flex;gap:var(--s2);align-items:center}.figure-spin{inline-size:1.6rem;block-size:1.6rem;border:2px solid var(--line);border-block-start-color:var(--accent, var(--muted));border-radius:50%;animation:figure-spin .9s linear infinite}@keyframes figure-spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){.figure-spin{animation:none}}.figure-slot-box{inline-size:min(100%,22rem);block-size:9rem;display:grid;place-items:center;border:1.5px dashed var(--line);border-radius:8px;color:var(--muted);font-size:1.5rem;background:var(--surface-weak, transparent)}.figure-slot-failed,.figure-slot-unexpressible{border-style:solid;border-color:var(--danger, var(--line));color:var(--danger, var(--muted))}.figure-slot-caption{display:block;color:var(--muted);font-size:.88rem;text-align:center}.figure-brief-input{inline-size:min(100%,32rem);font:inherit;font-size:.9rem;padding:var(--s2);border:1px solid var(--line);border-radius:6px;resize:vertical}.figure-slot-tools{flex-wrap:wrap;justify-content:center}.figure-versions{display:flex;flex-wrap:wrap;gap:var(--s2);align-items:center;justify-content:center;inline-size:100%}.figure-version-meta{font-size:.8rem;overflow-wrap:anywhere}.figure-attempt-brief{display:block;inline-size:min(100%,36rem);max-block-size:14rem;overflow:auto;padding:var(--s2);border:1px solid var(--line);border-radius:6px;background:var(--surface-weak, transparent);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.78rem;white-space:pre-wrap;text-align:start}.figure-note{display:flex;flex-direction:column;gap:var(--s2);inline-size:min(100%,32rem);text-align:start}.figure-note-input{inline-size:100%;font:inherit;font-size:.9rem;padding:var(--s2);border:1px solid var(--line);border-radius:6px;resize:vertical}.figure-sketch{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s2);font-size:.88rem}.figure-sketch-input{position:absolute;inline-size:1px;block-size:1px;opacity:0}.figure-sketch-pick{position:relative}.figure-sketch-pick:focus-within{outline:2px solid var(--accent);outline-offset:2px}.figure-sketch-preview{max-inline-size:120px;max-block-size:90px;object-fit:contain;border:1px solid var(--line);border-radius:4px;background:#fff}.figure-rule-card{display:flex;flex-direction:column;gap:var(--s1, 4px);padding:var(--s2);border:1px solid var(--line);border-radius:6px;background:var(--surface-weak, transparent);font-size:.88rem}.figure-change-said{display:block;font-size:.9rem}.figure-change-field{display:block;font-size:.82rem;padding-inline-start:var(--s2);border-inline-start:2px solid var(--line)}.figure-change{display:block;overflow-wrap:anywhere}.figure-change-removed{color:var(--danger, var(--muted));text-decoration:line-through;text-decoration-thickness:1px}.figure-change-added{color:var(--ok, var(--fg))}.figure-chip-other{color:var(--danger, var(--muted))}.lesson-bar{gap:var(--s2);padding-block-end:var(--s2);border-block-end:1px solid var(--line)}.lesson-bar-spacer{flex:1 1 auto}.lesson-bar button{padding:var(--s1) var(--s3);font-size:.85rem;font-weight:600}.lesson-bar button.active{border-color:var(--accent);background:var(--accent-weak)}.lesson-mode-switch{border-color:var(--accent)!important;color:var(--accent-deep)}.lesson-mode-switch.active{background:var(--accent-weak)}.block-panel{position:relative}.block-tools{gap:var(--s3);margin-block-start:var(--s1);padding-block-end:var(--s2);font-size:.82rem;opacity:.75;transition:opacity .12s ease}.block-panel:hover .block-tools,.block-tools:focus-within{opacity:1}.block-tools .link{color:var(--muted);font-weight:600;text-decoration:none;align-self:auto}.block-tools .link:hover{color:var(--accent-deep);text-decoration:underline;box-shadow:none}.block-tools .link.on{color:var(--accent-deep);text-decoration:underline}.block-editor{padding:var(--s3);border:1px solid var(--accent-weak, var(--line));border-radius:var(--radius-sm);background:var(--surface-2)}.block-edit-split{display:grid;grid-template-columns:1fr 1fr;gap:var(--s3);align-items:start}@media (max-width: 900px){.block-edit-split{grid-template-columns:1fr}}.block-edit-preview{padding:var(--s3);border:1px dashed var(--line-strong);border-radius:var(--radius-sm);background:var(--surface);overflow-wrap:anywhere}.block-marks{gap:var(--s3);font-size:.82rem}.block-marks .link{color:var(--muted);font-weight:600;text-decoration:none;align-self:auto}.block-marks .link:hover{color:var(--accent-deep);text-decoration:underline;box-shadow:none}.block-redo{margin-block-start:var(--s2);padding:var(--s3);border:1px dashed var(--line-strong);border-radius:var(--radius-sm);background:var(--surface-2)}.block-history{margin-block-start:var(--s2);padding:var(--s3);border:1px solid var(--line);border-radius:var(--radius-sm)}.autogrow{overflow-y:hidden;resize:none}.btn.small,button.small{padding:var(--s1) var(--s2);font-size:.82rem;font-weight:600}.figure-slot-tools>.figure-note{flex-basis:100%;max-inline-size:32rem;margin-inline:auto}[hidden]{display:none!important}.term-explain-host .math-explainable{cursor:pointer;border-block-end:1px dotted transparent;border-radius:2px;transition:border-color .12s ease,background-color .12s ease}.term-explain-host .math-explainable:hover,.term-explain-host .math-explainable:focus-visible{border-block-end-color:var(--muted);background:#2f6fd012}.term-explain-host .math-explainable:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (hover: none){.term-explain-host .math-explainable{border-block-end-color:var(--muted)}.term-explain-host .block-edit-preview .math-explainable{border-block-end-color:transparent}}.term-explain-host .katex-display>.math-explainable{display:inline-block}.term-explain-host .block-edit-preview .math-explainable{cursor:auto}.term-explain-host .block-edit-preview .math-explainable:hover,.term-explain-host .block-edit-preview .math-explainable:focus-visible{border-block-end-color:transparent;background:none;outline:none}.formula-explain-tex{margin:0 0 var(--s3);text-align:center;font-size:1.15rem}.formula-explain-tex,.formula-explain-derivation{overflow-x:auto}.formula-explain-tex{position:sticky;inset-block-start:0;z-index:1;background:var(--surface);padding-block:var(--s2)}.formula-explain-name{margin:0 0 var(--s2);text-align:center;font-weight:600;color:var(--accent-deep)}.formula-explain-symbols{list-style:none;margin:var(--s3) 0 0;padding:0;display:grid;gap:2px}.formula-explain-symbols li{border-radius:6px}.formula-explain-symbols li:nth-child(odd){background:color-mix(in srgb,var(--accent-weak) 55%,transparent)}.formula-explain-symbols li.is-open{background:var(--accent-weak);border-inline-start:2px solid var(--accent)}.formula-explain-symbols li.is-open .formula-explain-chevron{transform:rotate(180deg)}.formula-explain-chevron{color:var(--muted);transition:transform .15s ease}.formula-explain-row-plain{color:inherit}.formula-explain-row{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:none;border:0;inline-size:100%;text-align:start;font:inherit;color:inherit;cursor:pointer;display:grid;grid-template-columns:minmax(2.5rem,auto) minmax(0,1fr) auto auto;align-items:baseline;gap:var(--s3);padding:var(--s2) var(--s3);border-radius:6px}.formula-explain-row:hover,.formula-explain-row:focus-visible{background:var(--accent-weak)}.formula-explain-row[disabled]{cursor:auto}.formula-explain-row[disabled]:hover{background:none}.formula-explain-deeper{padding-block:0 var(--s3);padding-inline:calc(2.5rem + 2 * var(--s3)) var(--s3);font-size:.95rem}.formula-explain-deeper :is(p,ul,ol):first-child{margin-block-start:0}.formula-explain-symbol{font-size:1.05rem}.formula-explain-means{overflow-wrap:anywhere}.formula-explain-unit{color:var(--muted);font-size:.9rem;white-space:nowrap}.formula-explain-more{margin-block-start:var(--s4);inline-size:100%}.formula-explain-derivation{margin-block-start:var(--s4);padding-block-start:var(--s3);border-block-start:1px solid var(--line)}.formula-explain-derivation h3{margin:0 0 var(--s2);font-size:.95rem;color:var(--muted)}.term-explain-host .math-explainable.math-promoted{border-block-end-color:var(--accent)}.term-explain-host .math-explainable.math-promoted:hover,.term-explain-host .math-explainable.math-promoted:focus-visible{border-block-end-color:var(--muted)}.term-explain-host .block-edit-preview .math-explainable.math-promoted,.term-explain-host .block-edit-preview .math-explainable.math-promoted:hover,.term-explain-host .block-edit-preview .math-explainable.math-promoted:focus-visible{border-block-end-color:transparent}.explain-dash-formula{max-inline-size:22rem;overflow-x:auto}.mcq-spare{margin-inline-start:var(--s3);padding-inline-start:var(--s3);border-inline-start:2px solid var(--line)}.mcq-num-spare{color:var(--muted);border:1px dashed var(--line);padding:0 .15em}.ux-tab{position:fixed;inset-block-end:var(--s4);inset-inline-end:var(--s4);z-index:40;padding:var(--s2) var(--s3);border:1px solid var(--line-strong);border-radius:var(--radius-pill);background:var(--surface);color:var(--ink-soft);font-weight:700;font-size:.8rem;letter-spacing:.04em;cursor:pointer;box-shadow:var(--shadow-sm)}.ux-tab:hover{color:var(--accent-deep)}.ux-panel{position:fixed;inset-block-end:var(--s4);inset-inline-end:var(--s4);z-index:40;inline-size:min(22rem,calc(100vw - 2 * var(--s4)));max-block-size:min(70vh,40rem);overflow-y:auto;padding:var(--s3);border:1px solid var(--line-strong);border-radius:var(--radius);background:var(--surface);box-shadow:var(--shadow-lg);font-size:.85rem}.ux-panel-head{display:flex;align-items:baseline;gap:var(--s2);margin-block-end:var(--s2)}.ux-panel-count{color:var(--ink-soft);font-size:.75rem}.ux-panel-close{margin-inline-start:auto;border:none;background:none;cursor:pointer;font-size:1.2rem;line-height:1;color:var(--ink-soft)}.ux-panel-all{display:flex;gap:var(--s2);margin-block-end:var(--s3)}.ux-panel-all button{flex:1;padding:var(--s1) var(--s2);border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--surface-2);cursor:pointer;font-weight:600;font-size:.8rem}.ux-panel-group h3{margin:var(--s3) 0 var(--s1);font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-soft)}.ux-panel-row{display:grid;grid-template-columns:1.1rem 1.4rem 1fr;align-items:start;gap:var(--s2);padding:var(--s1) 0;cursor:pointer}.ux-panel-row input{margin:.2em 0 0}.ux-panel-id{font-variant-numeric:tabular-nums;color:var(--ink-soft);font-size:.75rem}.ux-panel-empty{margin:0;color:var(--ink-soft)}.ux-panel-link{display:flex;gap:var(--s1);margin-block-start:var(--s3);padding-block-start:var(--s2);border-block-start:1px solid var(--line)}.ux-panel-link input{flex:1;min-inline-size:0;font-size:.72rem}.ux-panel-link button{border:1px solid var(--line-strong);border-radius:var(--radius-sm);background:var(--surface-2);cursor:pointer;font-size:.75rem;padding:var(--s1) var(--s2)}body.s1-modal-open #root{filter:blur(1.5px) brightness(.82)}.authed-img-frame{display:inline-flex;align-items:center;justify-content:center;min-inline-size:96px;min-block-size:72px;max-inline-size:100%;border:1px solid var(--line);border-radius:6px;vertical-align:middle}.authed-img-caption{padding:8px;font-size:14px;color:var(--muted);text-align:center}.approval-mark{display:inline-flex;align-items:center;gap:4px;font-size:14px;color:var(--ink-soft)}.approval-mark--yes{color:var(--ok)}.overlay-title{margin-inline-end:auto}.overlay-foot{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s3);padding:var(--s3) var(--s4);border-block-start:1px solid var(--line);background:var(--surface-2)}.edit-dialog{inline-size:min(860px,100%);block-size:min(640px,calc(100vh - 2 * var(--s4)))}.edit-dialog-kind{color:var(--muted);font-size:.85rem;text-transform:uppercase;letter-spacing:.04em}.edit-dialog-note{color:var(--ink-soft);font-size:.9rem}.edit-dialog-actions{display:flex;gap:var(--s2);margin-inline-start:auto}.overlay-foot button{min-inline-size:9rem}.edit-dialog-tabs{display:flex;flex-wrap:wrap;gap:var(--s2);border-block-end:1px solid var(--line);margin-block-end:var(--s3)}.edit-dialog-tabs button{background:none;border:0;border-block-end:2px solid transparent;border-radius:0;padding:var(--s2) var(--s3);color:var(--muted);cursor:pointer}.edit-dialog-tabs button.active{color:var(--accent);border-block-end-color:var(--accent);font-weight:600}.edit-dialog-pane[hidden]{display:none}.edit-open{background:none;border:1px solid var(--line-strong);border-radius:var(--radius-pill);color:var(--accent);cursor:pointer;padding:2px var(--s2);font-size:.85rem;white-space:nowrap}.edit-open:hover{border-color:var(--accent);background:var(--accent-weak)}.edit-dialog-pane label.row{justify-content:flex-start}.edit-dialog-pane label.row input[type=checkbox]{flex:none;inline-size:auto}.figure-version-stage{display:flex;align-items:center;justify-content:center;block-size:15rem;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;overflow:hidden}.figure-version-stage img{max-inline-size:100%;max-block-size:15rem;object-fit:contain}.edit-dialog-pane .figure-versions{display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start}.figure-thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(7rem,1fr));gap:var(--s2);align-items:start;align-content:start}.figure-thumb{display:flex;flex-direction:column;gap:4px;border:1px solid var(--line);border-radius:var(--radius-sm);background:#fff;padding:4px;cursor:pointer}.figure-thumb:hover{border-color:var(--accent)}.figure-thumb[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-weak)}.figure-thumb-box{display:flex;align-items:center;justify-content:center;block-size:4.5rem;overflow:hidden}.figure-thumb-box img{max-inline-size:100%;max-block-size:4.5rem;object-fit:contain}.figure-thumb-cap{font-size:.8rem;color:var(--muted)}.draft-preview{margin:0;padding:var(--s3);max-block-size:18rem;overflow-y:auto;white-space:pre-wrap;overflow-wrap:anywhere;font-family:inherit;font-size:.95rem;line-height:1.5;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-sm)}.edit-dialog .overlay-body{flex:1 1 auto;min-block-size:0}.edit-dialog-label{color:var(--muted);font-size:.85rem}.figure-thumbs{direction:ltr}.tr-old-frame h2{font-size:1rem;margin:0}.tr-old-frame h2:focus:not(:focus-visible){outline:none}.tr-old-frame ul{margin:0}.tr-old-error{color:var(--danger)}.tr-old-button{position:relative}.tr-old-button:after{content:"";position:absolute;inset-inline:0;inset-block-start:50%;block-size:44px;transform:translateY(-50%)}.tr-old-close{margin-inline-start:auto;min-inline-size:44px;min-block-size:44px;background:none;border:0;font-size:1.3rem;cursor:pointer}.b1{--bg: #f7f3ea;--surface: #fdfbf6;--surface-2: #edf1ea;--line: #e4ddce;--ink: #1c2621;--ink-2: #5b685f;--accent: #1e3b30;--on-accent: #f7f3ea;--progress: #94701f;--progress-track: #e0d6bf;--check: #3a7356;--reaction: #c29a3e;--reaction-text: #1e3b30;--field-line: #848c83;--mascot-line: #1e3b30;--icon-bg: #1e3b30;--icon-ink: #f7f3ea;--error: #8a5a2b;--paper: #fdfbf6}@media (prefers-color-scheme: dark){.b1:not([data-theme=light]){--bg: #111a16;--surface: #17231e;--surface-2: #1e2c26;--line: #2c3d35;--ink: #ece7da;--ink-2: #a3afa7;--accent: #d9b45a;--on-accent: #15201b;--progress: #d9b45a;--progress-track: #2a3a33;--check: #7fbf9a;--reaction: #e3bf62;--reaction-text: #e3bf62;--field-line: #6b7870;--mascot-line: #d8e0d9;--icon-bg: #1e3b30;--icon-ink: #f5f0e4;--error: #d99a6c;--paper: #e6e0d2;color-scheme:dark}}.b1[data-theme=dark]{--bg: #111a16;--surface: #17231e;--surface-2: #1e2c26;--line: #2c3d35;--ink: #ece7da;--ink-2: #a3afa7;--accent: #d9b45a;--on-accent: #15201b;--progress: #d9b45a;--progress-track: #2a3a33;--check: #7fbf9a;--reaction: #e3bf62;--reaction-text: #e3bf62;--field-line: #6b7870;--mascot-line: #d8e0d9;--icon-bg: #1e3b30;--icon-ink: #f5f0e4;--error: #d99a6c;--paper: #e6e0d2;color-scheme:dark}.b1{min-height:100vh;background:var(--bg);color:var(--ink);font-family:Assistant,"Source Sans 3",sans-serif;box-sizing:border-box}.b1{--accent-deep: color-mix(in srgb, var(--accent) 75%, black);--accent-weak: color-mix(in srgb, var(--accent) 14%, var(--surface));--amber: var(--progress);--amber-weak: color-mix(in srgb, var(--progress) 16%, var(--surface));--ok: var(--accent);--ok-weak: var(--accent-weak);--warn: var(--progress);--warn-weak: var(--amber-weak);--danger: var(--error);--danger-weak: color-mix(in srgb, var(--error) 16%, var(--surface));--ink-soft: var(--ink-2);--muted: var(--ink-2);--line-strong: color-mix(in srgb, var(--line) 55%, var(--ink) 45%)}.b1 *,.b1 *:before,.b1 *:after{box-sizing:border-box}.b1-ltr{direction:ltr;unicode-bidi:isolate;font-family:"Source Sans 3",sans-serif}.b1-col{max-inline-size:440px;margin-inline:auto;padding:24px 20px;display:flex;flex-direction:column;gap:20px;min-height:100vh;justify-content:center}.b1-lockup{display:flex;align-items:center;gap:10px;direction:ltr;color:var(--mascot-line);align-self:center}.b1-lockup svg{display:block;color:var(--mascot-line)}.b1-lockup .b1-word{font-family:"Source Sans 3",sans-serif;font-weight:600;font-size:25px;color:var(--mascot-line)}.b1-lockup--small svg{width:36px;height:36px}.b1-title{font-size:28px;font-weight:600;letter-spacing:-.01em;margin:0;text-align:center}.b1-subtitle{font-size:16px;color:var(--ink-2);margin:0;text-align:center}.b1-meta{font-size:14.5px;color:var(--ink-2);text-align:center}.b1-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px}.b1-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-block-size:52px;padding:0 24px;border-radius:12px;font-size:18px;font-weight:600;font-family:inherit;cursor:pointer;border:none;inline-size:100%}.b1-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-btn:disabled{opacity:.6;cursor:default}.b1-btn-primary{background:var(--accent);color:var(--on-accent)}.b1-btn-secondary{background:var(--surface);border:1.5px solid var(--mascot-line);color:var(--ink)}.b1-link-btn{background:none;border:none;color:var(--ink);text-decoration:underline;font:inherit;font-size:15px;cursor:pointer;padding:8px;align-self:center}.b1-link-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-spinner{display:inline-block;inline-size:18px;block-size:18px;border-radius:50%;border:2.5px solid currentColor;border-inline-end-color:transparent;animation:b1-spin .7s linear infinite}@keyframes b1-spin{to{transform:rotate(360deg)}}.b1-field{display:flex;flex-direction:column;gap:6px}.b1-field label{font-size:14px;color:var(--ink-2)}.b1-input{background:var(--surface);border:1.5px solid var(--field-line);border-radius:12px;min-block-size:52px;padding:0 16px;font-size:18px;color:var(--ink);font-family:"Source Sans 3",sans-serif;direction:ltr;text-align:start}.b1-input:focus{outline:none;border-color:var(--ink)}.b1-input[aria-invalid=true]{border-color:var(--error)}.b1-field-error{margin:0;font-size:14px;color:var(--error)}.b1-report-corner{position:fixed;inset-block-end:16px;right:20px;left:auto;z-index:6}.b1.b1-has-fab .b1-report-corner{inset-block-end:80px}.b1[dir=rtl] .b1-shell~.b1-report-corner{right:calc(var(--b1-side-w) + 20px)}.b1-report-fab{inline-size:40px;block-size:40px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.b1-report-fab svg{width:18px;height:18px}.b1-report-fab:hover{color:var(--ink)}.b1-report-fab:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-report-corner.b1-report{margin-block-start:0;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:0 4px 16px color-mix(in srgb,black 25%,transparent);inline-size:min(260px,calc(100vw - 180px))}.b1-report-corner .b1-report-thanks{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 14px;inline-size:max-content;max-inline-size:calc(100vw - 32px)}.b1-report-text{inline-size:100%;box-sizing:border-box;background:var(--surface);border:1.5px solid var(--field-line);border-radius:12px;padding:10px 14px;font-size:15px;font-family:inherit;color:var(--ink);resize:vertical;min-block-size:80px}.b1-report-text:focus{outline:none;border-color:var(--ink)}.b1-notice{border:1px solid var(--error);color:var(--error);border-radius:12px;padding:14px 16px;font-size:15px}.b1-pulse{background:var(--surface-2);border-radius:8px;animation:b1-pulse 1.4s ease-in-out infinite}@keyframes b1-pulse{0%,to{opacity:.6}50%{opacity:1}}.b1-switch-row{display:flex;align-items:center;gap:10px}.b1-switch{position:relative;inline-size:44px;block-size:44px;padding:0;border:none;background:none;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;flex:none}.b1-switch:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:999px}.b1-switch-track{inline-size:44px;block-size:24px;border-radius:999px;background:var(--progress-track);border:1px solid var(--line);position:relative;transition:background .15s ease}.b1-switch[aria-checked=true] .b1-switch-track{background:var(--accent);border-color:var(--accent)}.b1-switch-thumb{position:absolute;inset-block-start:2px;inset-inline-start:22px;inline-size:18px;block-size:18px;border-radius:50%;background:var(--surface);transition:inset-inline-start .15s ease}.b1-switch[aria-checked=true] .b1-switch-thumb{inset-inline-start:2px;background:var(--on-accent)}.b1[dir=ltr] .b1-switch-thumb{inset-inline-start:auto;inset-inline-end:22px}.b1[dir=ltr] .b1-switch[aria-checked=true] .b1-switch-thumb{inset-inline-start:auto;inset-inline-end:2px}.b1-switch-word{font-size:14px;color:var(--ink-2)}.b1-class-card:not(.b1-class-card--outline) .b1-switch-word{color:var(--on-accent)}.b1-class-card:not(.b1-class-card--outline) .b1-switch[aria-checked=true] .b1-switch-track{background:var(--progress-track);border-color:var(--progress-track)}.b1-class-card:not(.b1-class-card--outline) .b1-switch-thumb{background:var(--ink);box-shadow:0 0 0 1.5px var(--ink)}.b1-mascot{display:block;margin-inline:auto}.b1-header{min-block-size:76px;border-block-end:1px solid var(--line);padding-inline:20px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}.b1-header-name{font-size:17px;color:var(--ink);flex:1 1 auto;min-inline-size:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.b1-header-name--cabinet{flex:0 1 auto;min-inline-size:0}.b1-cabinet-name-group{display:inline-flex;align-items:center;gap:12px;flex-wrap:nowrap;flex:0 1 auto;min-inline-size:0}.b1-cabinet-name-input{inline-size:auto;flex:0 1 auto;min-inline-size:80px}.b1-header-spacer{margin-inline-start:auto}.b1.b1-bar{min-height:0}.b1-cabinet-back{align-self:flex-start;padding-inline:0}.b1-cabinet-title{font-family:inherit;font-size:28px;font-weight:600;line-height:1.2;margin:0}.b1-cabinet-title+.b1-meta{text-align:start;margin:8px 0 0}.b1-cabinet-classes{display:flex;flex-direction:column;gap:16px}.b1-cabinet-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.b1-cabinet-head h2{font-family:inherit;font-size:19px;font-weight:600;margin:0}.b1 a.b1-card.b1-class-link{display:flex}.b1-cabinet-narrow{inline-size:100%;max-inline-size:560px;margin-inline:auto;display:flex;flex-direction:column;gap:20px}.b1-cabinet-created{margin:0;font-size:15px;font-weight:600;color:var(--ink)}.b1-card-title{font-family:inherit;font-size:19px;font-weight:600;margin:0 0 8px}.b1-roster-name{display:inline-block;max-inline-size:100%;vertical-align:bottom;min-inline-size:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.b1-share-mark{display:inline-flex;align-items:center;gap:6px;flex-shrink:0;color:var(--ink)}.b1-roster-empty{display:flex;flex-direction:column;align-items:center;gap:8px}.b1-roster-empty .b1-empty{padding:0 0 8px;margin:0}.b1-roster-note{text-align:start;margin-block-start:-8px}.b1-invite-lead{margin:0 0 12px;font-size:16px;color:var(--ink-2)}.b1-invite-row{display:flex;flex-direction:column;gap:12px}.b1-invite-link{margin:0;padding:10px 12px;border-radius:12px;background:var(--surface-2);color:var(--ink);font-size:16px;overflow-wrap:anywhere;text-align:start}.b1-invite-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-invite-copy{min-block-size:44px;font-size:16px}.b1-invite-status{min-block-size:1.4em;margin:8px 0 0;font-size:14.5px;color:var(--ink-2);text-align:start}.b1-invite-notes{margin:8px 0 0;padding-inline-start:20px;display:flex;flex-direction:column;gap:6px;text-align:start}@media (min-width: 768px){.b1-invite-row{flex-direction:row;align-items:center}.b1-invite-link{flex:1 1 auto}.b1-invite-copy{inline-size:auto;flex-shrink:0}}.b1-theme-toggle{inline-size:44px;block-size:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.b1-theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-theme-toggle>svg{flex-shrink:0}.b1-header--wrap{flex-wrap:wrap;row-gap:8px;min-block-size:auto;padding-block:14px}.b1-header-nav{display:flex;align-items:center;flex-wrap:wrap;gap:4px}.b1-header-nav a{position:relative;padding:8px 12px;border-radius:8px;color:var(--ink-2);font-weight:600;font-size:17px;text-decoration:none}.b1-header-nav a.active{color:var(--ink)}.b1-header-nav a.active:after{content:"";position:absolute;inset-inline:12px;inset-block-end:-2px;block-size:2px;border-radius:2px;background:var(--accent)}.b1-btn-header{inline-size:auto;min-block-size:40px;padding-inline:18px;font-size:16px}.b1-top-row{display:flex;align-items:center;gap:8px;position:fixed;inset-block-start:20px;inset-inline-end:20px;z-index:1}.b1-lang-toggle{inline-size:44px;block-size:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;font-size:13px;font-weight:600;font-family:Assistant,"Source Sans 3",sans-serif}select.b1-lang-toggle{-webkit-appearance:none;-moz-appearance:none;appearance:none;padding:0;text-align:center;text-align-last:center}.b1-lang-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-logout{color:var(--ink-2);font-size:15px;text-decoration:underline;background:none;border:none;cursor:pointer;font-family:inherit;padding:8px;white-space:nowrap;flex-shrink:0}.b1-logout:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-main{padding:24px 20px 48px;max-inline-size:1120px;margin-inline:auto;display:flex;flex-direction:column;gap:32px}.b1-section-title{font-size:19px;font-weight:600;margin:0 0 14px}.b1-classes-grid{display:grid;grid-template-columns:1fr;gap:16px}@media (min-width: 768px){.b1-classes-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width: 1100px){.b1-classes-grid{grid-template-columns:repeat(3,1fr)}}.b1-class-card{border-radius:20px;padding:24px;background:var(--accent);color:var(--on-accent);display:flex;flex-direction:column;gap:12px}.b1-class-card--outline{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.b1-class-link{display:flex;align-items:center;justify-content:space-between;gap:8px;color:inherit;text-decoration:none}.b1-class-link[aria-disabled=true]{pointer-events:none;cursor:default}.b1-class-topic{font-size:21px;font-weight:600;margin:0}.b1-class-sub{font-size:14.5px;opacity:.85;margin:0}.b1-class-go{inline-size:36px;block-size:36px;border-radius:50%;background:color-mix(in srgb,currentColor 14%,transparent);display:inline-flex;align-items:center;justify-content:center;flex:none}.b1-subjects-grid{display:grid;grid-template-columns:1fr;gap:16px}@media (min-width: 768px){.b1-subjects-grid{grid-template-columns:repeat(2,1fr)}}.b1-subject-name{font-size:16px;font-weight:600;margin:0}.b1-subject-percent{font-size:28px;font-weight:600;margin:4px 0 10px}.b1-progress{block-size:8px;border-radius:4px;background:var(--progress-track);position:relative;overflow:hidden}.b1-progress-fill{position:absolute;inset-block:0;inset-inline-start:0;background:var(--progress);border-radius:4px;transition:width .3s ease-out}.b1-lines{display:flex;flex-direction:column;gap:15px}.b1-line-label{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:16px;font-weight:700;margin-block-end:6px}.b1-line-count{font-weight:600;font-variant-numeric:tabular-nums;unicode-bidi:isolate}.b1-line-track{position:relative;block-size:6px;border-radius:2px;background:var(--progress-track);overflow:hidden}.b1-line-fill{position:absolute;inset-block:0;inset-inline-start:0;background:var(--progress);transition:inline-size .3s ease-out}.b1-line--material .b1-line-fill{background:var(--accent)}@media (prefers-color-scheme: dark){.b1:not([data-theme=light]) .b1-line--material .b1-line-fill{background:var(--ink-2)}}.b1[data-theme=dark] .b1-line--material .b1-line-fill{background:var(--ink-2)}.b1-lines--mini{flex-basis:100%;gap:8px;margin-block-start:4px}.b1-lines--mini .b1-line-label{font-size:13px;font-weight:600;margin-block-end:4px}.b1-lines--mini .b1-line-track{block-size:4px}.b1-trow--lines{flex-wrap:wrap;padding-block-end:14px}.b1-dialog-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#0a0e0c99;display:flex;align-items:center;justify-content:center;padding:20px;overscroll-behavior:contain}.b1-dialog{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px;max-inline-size:400px;max-block-size:calc(100dvh - 40px);overflow-y:auto;display:flex;flex-direction:column;gap:16px}.b1-dialog-title{font-size:28px;font-weight:600;letter-spacing:-.01em;margin:0;text-align:start;overflow-wrap:anywhere;outline:none}.b1-dialog-actions{display:flex;flex-wrap:wrap;gap:12px}.b1-dialog-actions .b1-btn{inline-size:auto;flex:1 1 140px}.b1-q-lead{font-size:16.5px;margin:0;overflow-wrap:anywhere}.b1-q-list{font-size:16.5px;margin:0;padding-inline-start:20px;display:flex;flex-direction:column;gap:4px}.b1-q-privacy{font-size:14.5px;color:var(--ink-2);margin:8px 0 0}.b1-q-note{font-size:14px;color:var(--ink-2);margin:0}.b1-empty{color:var(--ink-2);font-size:16px;text-align:center;padding:24px}.b1-link-btn--muted{color:var(--ink-2);align-self:start}.b1-link-btn--tap{min-block-size:44px;min-inline-size:44px;display:inline-flex;align-items:center}.b1-back-btn{font-size:18px;background:none;border:none;min-inline-size:44px;min-block-size:44px;color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}.b1-back-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-header-title{font-size:19px;font-weight:600}.b1-share-list{display:flex;flex-direction:column;gap:16px}.b1-share-card{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:8px}.b1-share-name{font-size:16px;font-weight:600;margin:0;overflow-wrap:anywhere}.b1-share-teacher{font-size:14.5px;color:var(--ink-2);margin:0;overflow-wrap:anywhere}.b1-share-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.b1-pill{display:inline-block;font-size:14px;font-weight:600;padding:4px 10px;border-radius:999px;background:var(--surface-2)}.b1-pill--on{color:var(--accent)}.b1-pill--off{color:var(--ink-2)}.b1-footnote{color:var(--ink-2);font-size:14px;margin:0}.b1-dialog--confirm{max-inline-size:320px}.b1-confirm-text{font-size:16px;margin:0}.b1-confirm-text+.b1-confirm-text{margin-block-start:12px}.b1 svg.i{inline-size:20px;block-size:20px;flex:none}.b1-h1{font-size:32px;font-weight:600;letter-spacing:-.01em;line-height:1.15}.b1-h2{font-size:21px;font-weight:600;line-height:1.3}.b1-h3{font-size:18px;font-weight:600;line-height:1.3}.b1-body{font-size:16px;line-height:1.55}.b1-condition{font-size:20px;line-height:1.75}.b1-small{font-size:14px;color:var(--ink-2)}.b1-welcome{font-size:17px;line-height:1.5;text-align:center;color:var(--ink)}.b1-kicker{font-size:14px;color:var(--ink-2)}.b1-nobr{white-space:nowrap}.b1-math{direction:ltr;unicode-bidi:isolate;font-family:"Source Sans 3",serif;font-style:italic;margin-inline-end:.1em}.b1-stack{display:flex;flex-direction:column;gap:12px}.b1-row{display:flex;align-items:center;gap:10px}.b1-spacer{margin-inline-start:auto}.b1-main--s3{padding:20px 20px 48px;display:flex;flex-direction:column;gap:24px}.b1.b1-has-fab .b1-main--s3{padding-block-end:96px}@media (min-width: 1024px){.b1-main--task{max-inline-size:640px}}.b1-card--tight{padding:16px 18px;border-radius:18px;position:relative}.b1-btn-sm{min-block-size:44px;font-size:16px;padding:0 16px;inline-size:auto}.b1-btn-row{display:flex;flex-wrap:wrap;gap:10px}.b1-icon-btn{inline-size:44px;block-size:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);display:inline-flex;align-items:center;justify-content:center;cursor:pointer;flex:none;transition:background-color .15s ease}.b1-icon-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-topbar{min-block-size:64px;border-block-end:1px solid var(--line);padding-inline:12px;display:flex;align-items:center;gap:12px;background:var(--bg)}.b1-topbar-title{font-size:17px;font-weight:600;flex:1 1 auto;min-inline-size:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.b1[dir=rtl] .b1-topbar .b1-icon-btn svg.i{transform:scaleX(-1)}.b1-chip{display:inline-flex;align-items:center;gap:6px;block-size:26px;padding:0 10px;border-radius:999px;font-size:13px;font-weight:600;white-space:nowrap;background:var(--surface-2);color:var(--ink-2);border:1px solid transparent;transition:border-color .15s ease}.b1-chip svg.i{width:14px;height:14px}.b1-chip--role{background:none;border-color:var(--line);color:var(--ink-2);font-size:12px}.b1-seg{display:flex;padding:4px;gap:4px;border-radius:12px;background:var(--surface-2)}.b1-seg button{flex:1;min-block-size:40px;border:none;border-radius:9px;background:none;color:var(--ink-2);font:inherit;font-size:15px;font-weight:600}.b1-seg button[aria-pressed=true]{background:var(--surface);color:var(--ink);box-shadow:0 0 0 1px var(--ink-2)}.b1-seg--sm{display:inline-flex;padding:2px;gap:2px;border-radius:9px;flex:none}.b1-seg--sm button{flex:none;min-block-size:28px;padding:0 10px;border-radius:7px;font-size:13px}.b1-topic-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 12px}.b1-chapter{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden}.b1-chapter-head{display:flex;align-items:center;gap:12px;padding:14px 16px;min-block-size:56px;position:relative}button.b1-chapter-head{background:none;border:none;font:inherit;color:inherit;text-align:start;cursor:pointer;inline-size:100%}.b1-chapter-head:has(>.b1-strip){padding-block-end:18px}.b1-chapter-head:has(>.b1-num){align-items:baseline}.b1-chapter-head>svg.i{align-self:center}.b1-chapter-name{font-size:16.5px;font-weight:600;flex:1;min-inline-size:0}.b1-chapter>.b1-trow:first-child{border-block-start:0}.b1-trow{position:relative;display:flex;align-items:baseline;gap:10px;min-block-size:52px;padding:14px 16px 18px;border-block-start:1px solid var(--line);font-size:16px;line-height:1.35;transition:background-color .15s ease}.b1-trow-name{flex:1;min-inline-size:0}.b1-trow>svg.i{align-self:center}.b1-num{font-family:"Source Sans 3",sans-serif;font-size:13.5px;font-weight:400;color:var(--ink-2);font-variant-numeric:tabular-nums;direction:ltr;unicode-bidi:isolate;flex:none}:is(.b1-chapter-head,.b1-trow)>.b1-num{min-inline-size:2.4em}.b1 button.b1-trow,.b1 a.b1-trow,.b1 button.b1-card,.b1 a.b1-card{font-weight:400;color:var(--ink);text-decoration:none;box-shadow:none}.b1 button.b1-trow,.b1 a.b1-trow{border:none;border-block-start:1px solid var(--line)}.b1 a.b1-card{display:block}.b1 button.b1-trow:hover,.b1 a.b1-trow:hover,.b1 button.b1-card:hover,.b1 a.b1-card:hover{text-decoration:none;box-shadow:none}.b1 button.b1-trow:active,.b1 a.b1-trow:active,.b1 button.b1-card:active,.b1 a.b1-card:active{transform:none}.b1-strip{position:absolute;inset-inline:16px;inset-block-end:7px;block-size:4px;border-radius:2px;background:var(--progress-track);overflow:hidden}.b1-strip>i{position:absolute;inset-block:0;inset-inline-start:0;background:var(--progress);border-radius:2px}.b1-now{position:relative;background:var(--accent-weak)}.b1-now:before{content:"";position:absolute;inset-block:0;inset-inline-start:0;inline-size:3px;border-radius:2px;background:var(--accent)}:is(.b1-chapter-head,.b1-rail-item).b1-now:before{inset-block:10px}:is(.b1-trow,.b1-chapter-head).b1-now .b1-trow-name,:is(.b1-trow,.b1-chapter-head).b1-now .b1-chapter-name{color:var(--ink);font-weight:600}.b1-locked{cursor:default}.b1-class-lock{vertical-align:-3px}.b1-locked .b1-trow-name,.b1-locked .b1-chapter-name,.b1-locked .b1-rail-name,.b1-locked .b1-lmenu-name,.b1-locked .b1-lmenu-code,.b1-locked .b1-num{color:var(--ink-2);opacity:.45}.b1-share-row{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-2);padding-block:4px;margin-block-start:8px;max-inline-size:400px}.b1-share-note{margin:8px 0 0;max-inline-size:400px;font-size:14.5px;line-height:1.45;color:var(--ink-2)}.b1-switch--quiet{margin-inline-start:auto}.b1-switch--quiet .b1-switch-track{inline-size:36px;block-size:20px}.b1-switch--quiet .b1-switch-thumb{inline-size:14px;block-size:14px;inset-inline-start:18px;background:var(--ink-2)}.b1-switch--quiet[aria-checked=true] .b1-switch-track{background:var(--ink-2);border-color:var(--ink-2)}.b1-switch--quiet[aria-checked=true] .b1-switch-thumb{inset-inline-start:2px;background:var(--bg)}.b1[dir=ltr] .b1-switch--quiet .b1-switch-thumb{inset-inline-start:auto;inset-inline-end:18px}.b1[dir=ltr] .b1-switch--quiet[aria-checked=true] .b1-switch-thumb{inset-inline-start:auto;inset-inline-end:2px}.b1-note{font-size:14px;color:var(--ink-2);padding:8px 16px}.b1-block p+p{margin-block-start:12px}.b1-term{font-weight:700;text-decoration:underline dotted;text-underline-offset:4px}.b1-formula{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);font-size:20px}.b1-formula.is-open{border-color:var(--mascot-line)}.b1-popover{background:var(--surface);border:1.5px solid var(--mascot-line);border-radius:14px;padding:14px 16px;font-size:15px}.b1-popover>*+*{margin-block-start:6px}.b1-concept-card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:26px 24px;display:flex;flex-direction:column;gap:12px;min-block-size:160px}.b1-concept-card>.b1-h2{margin:0}.b1-lsec>.b1-h2{margin-block-end:12px}.b1-mistakes{list-style:none;padding:0;display:flex;flex-direction:column;gap:14px}.b1-mistakes>li{padding:14px 18px;border:1px solid var(--line);border-radius:14px;background:var(--bg)}.b1-mistakes>li.b1-recap{padding:0;border:0;background:none}.b1-mistakes>li:not(.b1-recap) .markdown>ul:has(>li:only-child){list-style:none;padding-inline-start:0}.b1-mistakes li p+p{margin-block-start:4px;color:var(--ink-2)}.b1-mistakes>li.b1-recap p+p{color:inherit}.b1-mistakes .b1-untitled p+p{color:inherit}.b1-mistakes>li .markdown p:has(>.katex,>.nobr>.katex){overflow-x:auto;overflow-y:hidden;padding-block:.3em;margin-block:-.3em}.b1-mistakes>li .markdown p:has(>.katex,>.nobr>.katex)+p{margin-block-start:var(--s2)}.b1-mistakes>li .markdown p:has(>.katex,>.nobr>.katex)+p:has(>.katex,>.nobr>.katex){margin-block-start:calc(var(--s2) - .3em)}.b1-mistakes>li .markdown>:is(ul,ol):last-child>li:last-child>p:last-child:has(>.katex,>.nobr>.katex){margin-block-end:calc(var(--s2) - .3em)}.b1-mistakes>li .markdown p>.nobr>.katex{white-space:normal}.b1-mistake{font-weight:600}.b1-ltask{position:relative;display:flex;align-items:flex-start;gap:10px;inline-size:100%;padding:14px 16px;border-radius:16px;background:var(--surface-2);border:1px solid var(--line);color:var(--ink);font:inherit;font-size:16px;line-height:1.5;text-align:start;cursor:pointer;transition:border-color .15s ease}.b1-ltask>svg.i{width:18px;height:18px;margin-block-start:3px;color:var(--ink-2)}.b1-ltask:focus-visible{outline:2px solid var(--accent);outline-offset:2px}:is(.b1-block,.b1-flow) :is(.b1-card,.b1-formula,.b1-popover,.b1-feedback,.b1-notice,.b1-task,.b1-concept-card,.b1-box,.b1-ltask)+:is(.b1-card,.b1-formula,.b1-popover,.b1-feedback,.b1-notice,.b1-task,.b1-concept-card,.b1-box,.b1-ltask){margin-block-start:12px}.b1-stepper{display:flex;gap:6px}.b1-stepper button{flex:1;block-size:24px;padding:0;border:none;background:none;cursor:pointer;display:flex;align-items:center}.b1-stepper button:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}.b1-stepper button:after{content:"";display:block;inline-size:100%;block-size:6px;border-radius:3px;background:var(--progress-track)}.b1-stepper button{block-size:44px}.b1-stepper button.now:after{background:var(--ink-2)}.b1-task{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:20px;display:flex;flex-direction:column;gap:16px}.b1-task>.b1-chip{align-self:flex-start}.b1-option{display:flex;align-items:center;gap:12px;min-block-size:52px;padding:12px 14px;border:1.5px solid var(--line);border-radius:12px;background:var(--surface);font-size:16px;text-align:start;transition:border-color .15s ease}.b1-option input{accent-color:var(--accent);inline-size:20px;block-size:20px;margin:0;flex:none}.b1-option.is-picked{border-color:var(--ink)}.b1-option.is-right{border-color:var(--progress);background:var(--surface-2)}.b1-option.is-wrong{border-color:var(--error)}.b1-option.is-shown{border-color:var(--mascot-line);background:var(--surface-2);font-weight:600}.b1-option-mark{margin-inline-start:auto;flex:none;inline-size:20px;block-size:20px;color:var(--mascot-line)}.b1-answer-row{display:flex;align-items:center;gap:10px}.b1-unit{font-size:18px;color:var(--ink-2)}.b1-input--answer{background:var(--bg);font-size:20px}.b1-feedback{border-radius:14px;padding:14px 16px;display:flex;flex-direction:column;gap:8px;font-size:16px}.b1-feedback p{margin:0}.b1-feedback--right{background:var(--surface-2)}.b1-feedback--right .b1-feedback-word{color:var(--reaction-text);font-weight:700;font-size:18px}.b1-feedback--wrong{border:1px solid var(--error)}.b1-feedback--wrong .b1-feedback-calm{color:var(--ink);font-weight:600}.b1-feedback--wrong .b1-feedback-why{color:var(--ink-2)}.b1-feedback-line{display:block;inline-size:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:none;border:none;color:inherit;font:inherit;text-align:start;padding:0;cursor:pointer}.b1-steps{counter-reset:s;list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}.b1-steps li{counter-increment:s;position:relative;padding-inline-start:34px;min-block-size:24px}.b1-steps li:before{content:counter(s);position:absolute;inset-inline-start:0;inset-block-start:0;inline-size:24px;block-size:24px;border-radius:50%;background:var(--surface-2);font-size:13px;font-weight:600;display:flex;align-items:center;justify-content:center;font-family:"Source Sans 3",sans-serif}.b1-acts{display:flex;flex-wrap:wrap;gap:8px}.b1-act{display:inline-flex;align-items:center;gap:6px;block-size:34px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface-2);color:var(--ink);font:inherit;font-size:14.5px;font-weight:600;white-space:nowrap;cursor:pointer}.b1-act svg.i{width:16px;height:16px}.b1-act[aria-expanded=true]{background:var(--surface);border-color:var(--mascot-line)}.b1-act:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-fab{position:fixed;inset-block-end:20px;right:20px;left:auto;display:inline-flex;align-items:center;gap:8px;block-size:48px;padding:0 18px;border-radius:999px;background:var(--accent);color:var(--on-accent);border:none;font:inherit;font-weight:600;font-size:16px;cursor:pointer;transition:background-color .15s ease}.b1-fab:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1[dir=rtl] .b1-shell~.b1-fab{right:calc(var(--b1-side-w) + 20px)}body.b1-chat-open .b1-fab{display:none}.b1-tip{position:fixed;z-index:25;max-inline-size:200px;padding:8px 10px;border-radius:10px;background:var(--surface-2);border:1px solid var(--line);color:var(--ink);font-size:13px;line-height:1.4;display:flex;flex-direction:column;align-items:flex-start;gap:6px}.b1-tip-arrow{position:absolute;inset-block-start:-6px;inline-size:10px;block-size:10px;box-sizing:border-box;background:inherit;border-top:1px solid var(--line);border-left:1px solid var(--line);transform:rotate(45deg)}.b1-tip--up .b1-tip-arrow{inset-block-start:auto;inset-block-end:-6px;border-top:none;border-left:none;border-bottom:1px solid var(--line);border-right:1px solid var(--line)}.b1-tip .b1-btn{inline-size:auto;min-block-size:32px;padding:0 12px;border-radius:9px;font-size:13px;background:var(--surface);border:1px solid var(--line);color:var(--ink)}.b1-highlight{box-shadow:0 0 0 3px var(--accent);border-radius:12px}.b1-scrim{position:absolute;top:0;right:0;bottom:0;left:0;background:color-mix(in srgb,black 45%,transparent)}.b1-sheet{position:fixed;z-index:40;inset-inline:0;inset-block-end:0;max-block-size:min(70dvh,560px);min-block-size:0;background:var(--surface);border-block-start:1px solid var(--line);border-radius:20px 20px 0 0;padding:12px 20px 24px;display:flex;flex-direction:column;gap:14px;transform:translateY(100%);visibility:hidden;transition:transform .2s ease-out,visibility 0s linear .2s}.b1-sheet.is-open{transform:translateY(0);visibility:visible;transition:transform .2s ease-out,visibility 0s linear 0s}.b1-sheet-resize{display:none}@media (min-width: 1024px){.b1-sheet{inset-block:0;inset-inline-end:0;inset-inline-start:auto;inline-size:var(--b1-chat-w, 380px);max-block-size:none;border-block-start:none;border-inline-start:1px solid var(--line);border-radius:0;box-shadow:0 0 24px color-mix(in srgb,black 12%,transparent);transform:translate(100%)}.b1-sheet[dir=rtl]{transform:translate(-100%)}.b1-sheet.is-open{transform:translate(0)}body.b1-chat-open .b1-shell,body.b1-chat-open .b1-main.b1-main--s3{margin-inline-end:var(--b1-chat-w, 380px)}.b1-sheet-resize{display:block;position:absolute;inset-block:0;inset-inline-start:0;inline-size:8px;cursor:col-resize;touch-action:none}.b1-sheet-resize:hover,.b1-sheet-resize:focus-visible{box-shadow:inset 2px 0 0 var(--line);outline:none}.b1-sheet-resize:focus-visible{box-shadow:inset 2px 0 0 currentColor}.b1-sheet[dir=rtl] .b1-sheet-resize:hover,.b1-sheet[dir=rtl] .b1-sheet-resize:focus-visible{box-shadow:inset -2px 0 0 var(--line)}.b1-sheet[dir=rtl] .b1-sheet-resize:focus-visible{box-shadow:inset -2px 0 0 currentColor}body.b1-chat-resizing{-webkit-user-select:none;user-select:none;cursor:col-resize}}.b1-chat{flex:1 1 auto;min-block-size:0;display:flex;flex-direction:column;gap:10px}.b1-chat-head{display:flex;align-items:center;gap:10px;flex:none}.b1-chat-new{margin-inline-start:auto;min-block-size:44px;padding:8px 4px;border:0;background:none;color:var(--ink-2);font:inherit;font-size:14px;cursor:pointer}.b1-chat-new:disabled{opacity:.55;cursor:default}.b1-chat-close{margin-inline-start:auto}.b1-chat-new+.b1-chat-close{margin-inline-start:0}.b1-chat-new:focus-visible,.b1-chat-hint:focus-visible,.b1-chat-send:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-chat-task{flex:none;padding-block-end:10px;border-block-end:1px solid var(--line);font-size:14px;color:var(--ink-2)}.b1-chat-task p{margin:0}.b1-chat-task-name{font-weight:600;color:var(--ink)}.b1-chat-task-answer{display:flex;align-items:baseline;column-gap:.3em;white-space:nowrap}.b1-chat-task-value{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden;overflow-wrap:anywhere;white-space:normal;min-inline-size:0;font-weight:600;color:var(--ink)}.b1-chat-wrong{color:var(--error)}.b1-chat-ok{color:var(--accent)}.b1-chat-log{flex:1 1 auto;min-block-size:0;overflow-y:auto;display:flex;flex-direction:column;gap:10px}.b1-chat-log>:first-child{margin-block-start:auto}.b1-chat-turn{display:flex;flex-direction:column;gap:10px}.b1-chat-me,.b1-chat-bot,.b1-chat-pending>[aria-live]{inline-size:fit-content;max-inline-size:85%;padding:10px 14px;border-radius:16px;font-size:16px;overflow-wrap:anywhere}.b1-chat-me{margin:0;align-self:flex-end;white-space:pre-wrap;background:var(--accent);color:var(--on-accent);border-start-end-radius:4px}.b1-chat-bot,.b1-chat-pending>[aria-live]{align-self:flex-start;background:var(--surface-2);color:var(--ink);border-start-start-radius:4px}.b1-chat-bot .prose.markdown>:first-child{margin-block-start:0}.b1-chat-bot .prose.markdown>:last-child{margin-block-end:0}.b1-chat .caret:after{content:none}.b1-chat-comp{flex:none;display:flex;align-items:flex-end;gap:6px;padding:6px;padding-inline-start:16px;border-radius:24px;background:var(--surface-2)}.b1-chat-comp:focus-within{box-shadow:inset 0 0 0 1.5px var(--ink)}@media (forced-colors: active){.b1-chat-comp:focus-within{outline:2px solid Highlight}}.b1-chat-comp textarea{flex:1 1 auto;min-inline-size:0;align-self:center;padding:0;border:0;outline:none;resize:none;background:none;color:var(--ink);font:inherit;font-size:16px;line-height:24px;overflow-y:auto}.b1-chat-comp textarea:focus{box-shadow:none;border-radius:0}.b1-chat-comp textarea::placeholder{color:var(--ink-2);opacity:1}.b1-chat-send{flex:none;display:grid;place-items:center;inline-size:44px;block-size:44px;padding:0;border:0;border-radius:999px;background:var(--accent);color:var(--on-accent);cursor:pointer}.b1-chat-send svg{inline-size:24px;block-size:24px}.b1-chat-send:disabled{background:var(--line);color:var(--ink-2);cursor:default;opacity:1}.b1-chat-hints{flex:none;display:flex;flex-wrap:wrap;gap:6px}.b1-chat-hint{max-inline-size:100%;min-block-size:44px;padding:8px 14px;border:0;border-radius:22px;background:var(--surface-2);color:var(--ink);font:inherit;font-size:15px;line-height:1.35;text-align:start;white-space:normal;overflow-wrap:anywhere;cursor:pointer}@media (pointer: fine) and (hover: hover){.b1-chat-hint:hover{background:color-mix(in srgb,var(--surface-2) 80%,var(--ink))}}@media (max-width: 1023px){.b1-chat-task{font-size:13px}}.b1-shell{display:flex;align-items:stretch;flex-direction:row;flex-wrap:wrap}.b1-shell>.b1-topbar{inline-size:100%}.b1-shell>.b1-main--s3{flex:1 1 0;min-inline-size:0;max-inline-size:880px;margin-inline:auto;padding:24px 40px 40px}.b1-rail{flex:none;inline-size:64px;padding:16px 8px;display:flex;flex-direction:column;gap:4px;background:var(--surface);border-inline-end:1px solid var(--line);transition:inline-size .15s ease}.b1-rail[aria-expanded=true]{inline-size:280px}.b1-rail-name{display:none;font-size:16.5px;flex:1 1 auto;min-inline-size:0;white-space:normal;overflow-wrap:break-word;text-align:start}.b1-rail[aria-expanded=true] .b1-rail-name{display:inline}.b1-rail[aria-expanded=true] .b1-rail-item{justify-content:flex-start}.b1-rail[aria-expanded=true] .b1-rail-item{block-size:auto;min-block-size:36px;padding-block:6px}.b1-rail-toggle{align-self:center;inline-size:40px;block-size:40px;margin-block-end:12px;padding:0;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--ink-2);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.b1-rail-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-rail[aria-expanded=true] .b1-rail-toggle{align-self:flex-end}.b1-rail-item{position:relative;display:flex;align-items:center;gap:4px;block-size:36px;padding-block:0;padding-inline:8px 4px;border:none;border-radius:10px;background:none;font:inherit;color:inherit;cursor:pointer}.b1-rail-item>.b1-num{min-inline-size:20px;text-align:center}.b1-rail-item[aria-current=page]{background:var(--surface-2)}.b1-rail-item[aria-current=page]>.b1-num{color:var(--ink);font-weight:600}.b1-rail-item:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-rail-tip{position:absolute;inset-inline-start:calc(100% + 8px);inset-block-start:50%;transform:translateY(-50%);background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:14px;color:var(--ink);white-space:nowrap;pointer-events:none;opacity:0;z-index:5;transition:opacity .15s ease}.b1{--b1-lmenu-open: 460px;--b1-lmenu-closed: 64px;--b1-side-w: 64px}.b1:has(.b1-rail[aria-expanded=true]){--b1-side-w: 280px}.b1:has(.b1-lmenu-slot){--b1-side-w: calc(var(--b1-lmenu-closed) + 16px)}.b1:has(.b1-lmenu-slot.is-open){--b1-side-w: calc(var(--b1-lmenu-open) + 16px)}.b1-lmenu-slot{flex:none;align-self:flex-start;position:sticky;inset-block-start:16px;inline-size:var(--b1-lmenu-closed);margin-block-start:16px;margin-inline-start:16px;transition:inline-size .15s ease}.b1-lmenu-slot.is-open{inline-size:var(--b1-lmenu-open)}.b1-lmenu{box-sizing:border-box;inline-size:100%;max-block-size:calc(100dvh - 32px);display:flex;flex-direction:column;gap:4px;padding:16px 8px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:none;background:var(--surface);border:1px solid var(--line);border-radius:16px}.b1-lmenu>.b1-rail-item{flex:none}.b1-lmenu .b1-rail-item.is-viewed{background:var(--surface-2)}.b1-lmenu .b1-rail-item.is-viewed>.b1-num{color:var(--ink);font-weight:600}.b1-lmenu .b1-rail-item:focus-visible{outline-offset:-2px}.b1-rail-tip.b1-lmenu-tip{position:fixed;transform:translateY(-50%);opacity:1;z-index:35}.b1-lmenu.is-open{display:grid;grid-template-columns:150px minmax(0,1fr);grid-template-rows:52px minmax(0,1fr);grid-template-areas:"clabel tlabel" "clist tlist";gap:0;padding:0;overflow:clip}.b1-lmenu.is-open>.b1-lmenu-toggle{grid-area:tlabel;align-self:end;justify-self:end;margin:0 8px;position:relative;z-index:1}.b1-lmenu-label{display:flex;align-items:center;align-self:end;block-size:40px;padding-inline:14px;font-size:13px;font-weight:600;color:var(--ink-2)}.b1[lang=en] .b1-lmenu-label{text-transform:uppercase;letter-spacing:.04em}.b1-lmenu-label--chapters{grid-area:clabel}.b1-lmenu-label--topics{grid-area:tlabel}.b1-lmenu-label--chapters,.b1-lmenu-chapters{border-inline-end:1px solid var(--line)}.b1-lmenu-list{position:relative;list-style:none;margin:0;padding:4px 0 12px;min-block-size:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--field-line) transparent}.b1-lmenu-chapters{grid-area:clist}.b1-lmenu-topics{grid-area:tlist}.b1-lmenu-chapter,.b1-lmenu-topic{position:relative;display:flex;align-items:center;inline-size:100%;min-block-size:44px;border:none;background:none;font:inherit;color:var(--ink);text-align:start;text-decoration:none;cursor:pointer}.b1-lmenu-chapter.b1-locked,.b1-lmenu-topic.b1-locked{cursor:default}.b1 button.b1-lmenu-chapter,.b1 button.b1-lmenu-topic{border-radius:0;box-shadow:none;transform:none;transition:none}.b1 a.b1-lmenu-topic{text-decoration:none}.b1-lmenu-chapter{padding:8px 14px}.b1-lmenu-row{display:flex;align-items:baseline;gap:6px;min-inline-size:0}.b1-lmenu-chapter .b1-num{font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums}.b1-lmenu-chapter .b1-lmenu-name{font-size:14.5px;font-weight:600;line-height:1.25}.b1-lmenu-topic{gap:8px;padding:6px 14px;font-size:14.5px;line-height:1.3}.b1-lmenu-code{flex:none;min-inline-size:2.4em;font-family:"Source Sans 3",sans-serif;font-size:13px;color:var(--ink-2);font-variant-numeric:tabular-nums}.b1-lmenu-name{flex:1 1 auto;min-inline-size:0;overflow-wrap:anywhere}.b1-lmenu-chapter.is-viewed,.b1-lmenu-topic.is-current{background:var(--accent-weak)}.b1-lmenu-chapter.is-viewed:before,.b1-lmenu-topic.is-current:before{content:"";position:absolute;inset-block:4px;inset-inline-start:0;inline-size:3px;border-radius:2px;background:var(--accent)}.b1-lmenu-topic.is-current{font-weight:600}.b1-lmenu-topic.is-current .b1-lmenu-code,.b1-lmenu-chapter.is-viewed .b1-num{color:var(--ink)}.b1-lmenu-chapter.is-viewed .b1-lmenu-name,.b1-lmenu-chapter.is-current .b1-lmenu-name{color:var(--accent)}.b1-lmenu-chapter.b1-locked .b1-lmenu-name{color:var(--ink-2)}.b1-lmenu-list :focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.b1-lmenu-topics .b1-note{margin:0;padding:0 14px 8px}.b1-lmenu.is-overlay{position:fixed;inset-block:0;inset-inline-start:0;inline-size:var(--b1-lmenu-open);max-block-size:none;border-radius:0;z-index:30;box-shadow:0 0 24px color-mix(in srgb,black 12%,transparent)}.b1-lmenu-slot.is-overlay{z-index:30}.b1-chapter-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}.b1-chapter :focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.b1-skip{position:absolute;inline-size:1px;block-size:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.b1-skip:focus{position:fixed;inset-inline-start:12px;inset-block-start:12px;inline-size:auto;block-size:auto;margin:0;overflow:visible;clip:auto;white-space:normal;z-index:20;padding:10px 16px;border-radius:12px;background:var(--surface);border:1.5px solid var(--mascot-line);color:var(--ink);font-size:15px;font-weight:600;text-decoration:none}.b1-fig{margin:0;display:flex;flex-direction:column;align-items:center;gap:8px}.b1-fig-frame{display:block;inline-size:100%;max-inline-size:560px;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:var(--paper)}.b1-fig-frame img{display:block;inline-size:100%;block-size:auto;max-block-size:420px;object-fit:contain;mix-blend-mode:multiply}.b1-fig-frame .authed-img-frame{display:flex;inline-size:100%;aspect-ratio:16 / 9;max-block-size:420px;border:0;border-radius:0}@media (max-width: 767px){.b1-main--s3,.t6-lesson{overflow-x:clip}.b1-fig{inline-size:100vw;margin-inline:calc(50% - 50vw)}.b1-fig-frame{max-inline-size:none;border-inline:0;border-radius:0}}.b1-fig-cap{font-size:14px;line-height:1.4;color:var(--ink-2);text-align:center;max-inline-size:560px}.b1-block .b1-fig{margin-block:16px}.b1 ::placeholder{color:var(--ink-2)}.b1 ::selection{background:color-mix(in srgb,var(--accent) 35%,var(--surface));color:var(--ink)}@media (hover: hover){.b1-trow:hover,.b1-chapter-head:hover{background:var(--surface-2)}.b1-locked.b1-trow:hover,.b1-locked .b1-chapter-head:hover,button.b1-locked:hover{background:none}.b1-ltask:hover,.b1-option:not(.is-right):not(.is-wrong):hover,.b1-chip:hover{border-color:var(--ink-2)}.b1-fab:hover{background:color-mix(in srgb,var(--accent) 88%,var(--ink))}.b1-icon-btn:hover{background:var(--surface-2)}.b1-rail-item:hover .b1-num{color:var(--ink)}.b1-rail-item:hover+.b1-rail-tip{opacity:1}.b1-lmenu-chapter:not(.is-viewed):not(.b1-locked):hover,.b1-lmenu-topic:not(.is-current):not(.b1-locked):hover{background:var(--surface-2)}}.b1-rail-item:focus-visible+.b1-rail-tip{opacity:1}@media (prefers-reduced-motion: reduce){.b1-icon-btn,.b1-chip,.b1-trow,.b1-ltask,.b1-option,.b1-fab,.b1-rail-tip,.b1-lmenu-slot,.b1-progress-fill,.b1-line-fill,.b1-sheet{transition:none}}.b1-topbar,.b1-header{position:relative}.b1-search{display:flex;align-items:center;gap:8px;min-inline-size:0}.b1-search.is-open{flex:1 1 auto}.b1-search-ico{inline-size:20px;block-size:20px;flex:none}.b1-search-form{display:none;flex:1 1 auto;min-inline-size:0}.b1-search.is-open .b1-search-form{display:block}.b1-search-form input{inline-size:100%;min-block-size:44px;padding:0 14px;border-radius:12px;border:1.5px solid var(--field-line);background:var(--surface);color:var(--ink);font:inherit;font-size:16px;text-align:start}.b1-search-form input:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-search-results{position:absolute;inset-block-start:100%;inset-inline:12px;z-index:30;max-block-size:60vh;overflow-y:auto;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 8px 24px #00000026}.b1-search-results ul{list-style:none;margin:0;padding:4px}.b1-search-results a{display:flex;flex-direction:column;gap:2px;padding:10px 12px;border-radius:8px;color:var(--ink);text-decoration:none;text-align:start}.b1-search-results a:hover{background:var(--surface-2)}.b1-search-results a:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.b1-search-title{font-weight:600}.b1-search-block{font-size:14px;font-weight:600;color:var(--ink-2)}.b1-search-snippet{color:var(--ink-2);font-size:14px;overflow-wrap:anywhere}.b1-search-note{margin:0;padding:12px 14px;color:var(--ink-2)}@media (min-width: 768px){.b1-search-toggle{display:none}.b1-search-form{display:block;inline-size:280px;flex:none}.b1-search.is-open{flex:none}.b1-search-results{inset-inline:auto 12px;inline-size:420px}}.b1-rt{inline-size:100%;border-collapse:separate;border-spacing:0;text-align:start}.b1-rt th{padding-block:0 8px;padding-inline:0 12px;font-size:13px;font-weight:400;color:var(--ink-2);text-align:start;white-space:nowrap}.b1-rt :where(td){block-size:70px;padding-inline:0 12px;vertical-align:middle;border-block-start:1px solid var(--line);font-size:14px;color:var(--ink-2);text-align:start}.b1-rt th:first-child,.b1-rt td:first-child{padding-inline-start:12px}.b1-rt th:last-child,.b1-rt td:last-child{padding-inline-end:0}.b1-rt-name{inline-size:100%;max-inline-size:0;position:relative;font-size:17px;font-weight:600;color:var(--ink)}.b1-rt-share{white-space:nowrap;font-size:15px}.b1-rt-time{white-space:nowrap}.b1-rt-label{display:none}.b1-rt-act{white-space:nowrap;text-align:end}.b1-rt tr.is-selected td{background:var(--surface-2)}.b1-rt tr.is-selected .b1-rt-name:before{content:"";position:absolute;inset-block:0;inset-inline-start:0;inline-size:3px;border-radius:2px;background:var(--accent)}.b1 button.b1-rt-details{min-block-size:44px;min-inline-size:44px;padding:0 8px;border:none;border-radius:8px;background:none;box-shadow:none;color:var(--accent);font:inherit;font-size:15px;font-weight:600;text-decoration:underline;cursor:pointer}.b1 button.b1-rt-details:hover{box-shadow:none;text-decoration:underline}.b1 button.b1-rt-details:active{transform:none}.b1 button.b1-rt-details:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (max-width: 767.98px){.b1-rt,.b1-rt tbody{display:block}.b1-rt thead{position:absolute;inline-size:1px;block-size:1px;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.b1-rt tr{position:relative;display:grid;grid-template-columns:auto 1fr auto;align-items:center;column-gap:12px;padding:8px 12px;border-block-start:1px solid var(--line)}.b1-rt td,.b1-rt td:first-child,.b1-rt td:last-child{display:block;block-size:auto;padding:0;border:0}.b1-rt td:empty{display:none}.b1-rt-name{grid-column:1 / 3;grid-row:1;inline-size:auto;max-inline-size:none;min-inline-size:0;position:static}.b1-rt td.b1-rt-name{display:flex;align-items:center;min-block-size:44px}.b1-rt-act{grid-column:3;grid-row:1}.b1-rt-share{grid-column:1;grid-row:2;font-size:13px}.b1-rt-time{grid-column:2 / 4;grid-row:2;font-size:13px}.b1-rt-label{display:inline}.b1-rt tr.is-selected{background:var(--surface-2)}.b1-rt tr.is-selected td{background:none}.b1-rt tr.is-selected:before{content:"";position:absolute;inset-block:0;inset-inline-start:0;inline-size:3px;border-radius:2px;background:var(--accent)}.b1-rt tr.is-selected .b1-rt-name:before{content:none}}body.s1-modal-open #root:has(.b1-spanel-layer){filter:none}.b1-spanel-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100}.b1-spanel-scrim{position:absolute;top:0;right:0;bottom:0;left:0;background:color-mix(in srgb,var(--ink) 12%,transparent)}@media (prefers-color-scheme: dark){.b1:not([data-theme=light]) .b1-spanel-scrim{background:#0006}}.b1[data-theme=dark] .b1-spanel-scrim{background:#0006}.b1-spanel{--from: 100%;position:absolute;inset-block:0;inset-inline-end:0;inline-size:100%;overflow-y:auto;overscroll-behavior:contain;background:var(--surface);color:var(--ink);text-align:start;outline:none;animation:b1-spanel-in .2s ease-out}.b1[dir=rtl] .b1-spanel{--from: -100%}@keyframes b1-spanel-in{0%{transform:translate(var(--from))}}@media (min-width: 768px){.b1-spanel{inline-size:550px;max-inline-size:100%;border-inline-start:1px solid var(--line)}}@media (min-width: 1150px){.b1-spanel{inline-size:580px}}@media (prefers-reduced-motion: reduce){.b1-spanel{animation:none}}.b1-spanel-head{position:sticky;inset-block-start:0;z-index:1;padding:8px 24px 16px;background:var(--surface);border-block-end:1px solid var(--line)}.b1-spanel-top{display:flex;align-items:center;justify-content:space-between;gap:12px;min-block-size:44px}.b1-spanel-kicker{font-size:14px;color:var(--ink-2)}.b1 button.b1-spanel-close{display:inline-flex;align-items:center;gap:6px;min-block-size:44px;min-inline-size:44px;padding:0 8px;border:none;border-radius:12px;background:none;box-shadow:none;color:var(--ink);font:inherit;font-size:15px;font-weight:600;cursor:pointer;flex:none}.b1 button.b1-spanel-close:hover{box-shadow:none;background:var(--surface-2)}.b1 button.b1-spanel-close:active{transform:none}.b1 button.b1-spanel-close:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-spanel-close svg{inline-size:18px;block-size:18px}.b1-spanel-name{margin:4px 0 8px;font-family:inherit;font-size:32px;font-weight:600;line-height:1.15;letter-spacing:-.01em;overflow-wrap:anywhere;outline:none}.b1-spanel-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 16px;font-size:14px;color:var(--ink-2)}.b1-spanel-body{padding:20px 24px 32px}.b1-spanel .b1-subtitle{text-align:start}.b1-spanel-loading{display:flex;flex-direction:column;gap:12px}.b1-spanel-error{display:flex;flex-direction:column;align-items:flex-start;gap:12px}.b1-spanel-error .b1-btn{inline-size:auto}.b1-spanel-listhead{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-block-end:4px}.b1-spanel-listhead h3{margin:0;font-family:inherit;font-size:19px;font-weight:600}.b1-spanel-listhead span{font-size:14px;color:var(--ink-2)}.b1-spanel-foot{margin:16px 0 0;font-size:13px;color:var(--ink-2)}.b1-stag{display:inline-block;padding:1px 8px;border-radius:6px;background:var(--surface-2);color:var(--ink);font-size:13px;line-height:1.5;font-weight:400;white-space:nowrap}.b1-stopics{list-style:none;margin:0;padding:0}.b1-stopic+.b1-stopic{border-block-start:1px solid var(--line)}.b1-stopic-head{display:block;inline-size:100%;padding:14px 0;border:none;background:none;color:var(--ink);font:inherit;font-weight:400;text-align:start}.b1 button.b1-stopic-head{min-block-size:44px;border-radius:8px;box-shadow:none;cursor:pointer}.b1 button.b1-stopic-head:hover{box-shadow:none}.b1 button.b1-stopic-head:active{transform:none}.b1 button.b1-stopic-head:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.b1-stopic-row{display:flex;align-items:baseline;gap:10px}.b1-stopic-name{flex:1;min-inline-size:0;font-size:18px;font-weight:600;overflow-wrap:anywhere}.b1-stopic-pct{flex:none;font-size:18px}.b1-stopic-chev{flex:none;align-self:center;inline-size:20px;block-size:20px}.b1[dir=rtl] .b1-stopic-chev{transform:scaleX(-1)}.b1-stopic.is-open .b1-stopic-chev,.b1[dir=rtl] .b1-stopic.is-open .b1-stopic-chev{transform:rotate(90deg)}.b1-stopic-head .b1-strip{position:relative;display:block;inset-inline:auto;inset-block-end:auto;margin-block:10px 8px}.b1-stopic-line{display:block;font-size:14px;color:var(--ink-2)}.b1-fsets{list-style:none;margin:0;padding:0 0 8px}.b1-fset{padding-block:14px;border-block-start:1px solid var(--line)}.b1-fset-head,.b1-fgroup-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.b1-fset-title{flex:1 1 0;min-inline-size:0;margin:0;font-family:inherit;font-size:16px;font-weight:600;line-height:1.4;overflow-wrap:anywhere}.b1-fgroup{margin-block-start:12px}.b1-fgroup-head h5{margin:0;font-family:inherit;font-size:15px;font-weight:600;color:var(--ink-2)}.b1 button.b1-spanel-open{position:relative;display:inline-flex;align-items:center;justify-content:center;flex:none;min-block-size:40px;padding:0 16px;border:1.5px solid var(--mascot-line);border-radius:12px;background:var(--surface);box-shadow:none;color:var(--ink);font:inherit;font-size:14px;font-weight:600;cursor:pointer}.b1 button.b1-spanel-open:after{content:"";position:absolute;inset-block:-2px;inset-inline:0}.b1 button.b1-spanel-open:hover{box-shadow:none}.b1 button.b1-spanel-open:active{transform:none}.b1 button.b1-spanel-open:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-answers{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.b1-ans{display:grid;grid-template-columns:7.5em 1fr auto;align-items:baseline;column-gap:12px}.b1-ans-no{font-size:14px;color:var(--ink-2)}.b1-ans-main{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px;min-inline-size:0;font-size:16px;overflow-wrap:anywhere}.b1-ans-number{font-size:17px}.b1-ans-muted{color:var(--ink-2)}.b1-ans-why{max-inline-size:14em;font-size:13px;color:var(--ink-2);text-align:end}@media (max-width: 767.98px){.b1-ans{grid-template-columns:auto 1fr}.b1-ans-why{grid-column:1 / -1;max-inline-size:none;text-align:start}}.b1-fout{display:flex;align-items:center;gap:8px;margin:12px 0 0;font-size:15px;font-weight:600}.b1-fout svg{inline-size:18px;block-size:18px;flex:none}.b1-fout--solved,.b1-fout--solved_after_shown{color:var(--accent)}.b1-fout--unsolved{color:var(--error)}.b1-dialog--task{inline-size:100%;max-inline-size:560px}.b1-dialog-backdrop:has(.b1-dialog--task){padding:16px}.b1-task-note{margin:0;font-size:14px;color:var(--ink-2)}.b1-task-line{text-align:start}.b1-task-loading{display:flex;flex-direction:column;gap:12px}.b1-task-options{list-style:none;margin:0;padding:0}.b1-task-options .b1-option{justify-content:space-between;cursor:default}.b1-task-options .b1-option:not(.is-right):hover{border-color:var(--line)}.b1-option-right{display:inline-flex;align-items:center;gap:6px;flex:none;font-size:14px;font-weight:600;color:var(--accent)}.b1-answer-static{inline-size:160px}.b1-task-correct{margin:0;font-size:16px}.b1-tlines{position:sticky;inset-block-start:0;z-index:5;display:flex;flex-direction:column;gap:8px;padding-block:10px;margin-block:-10px;background:var(--bg);border-block-end:1px solid var(--line)}@media (max-height: 480px){.b1-tlines{position:static}}.b1-tline{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;font-size:15px}.b1-tline-label{font-weight:700;min-inline-size:3.5em}.b1-tline-count{color:var(--ink-2);font-variant-numeric:tabular-nums;unicode-bidi:isolate;white-space:nowrap}.b1-tline-track{display:flex;gap:2px;block-size:8px;border-radius:4px;background:var(--progress-track);overflow:hidden}.b1-tline-fill{display:block;flex:none;block-size:100%;transition:inline-size .3s ease-out}.b1-tline--theory .b1-tline-fill{background:var(--ink-2)}.b1-tline-fill--checks{background:var(--check)}.b1-tline-fill--finals,.b1-swatch--finals{background:repeating-linear-gradient(45deg,var(--progress) 0 4px,color-mix(in srgb,var(--progress) 70%,var(--surface)) 4px 6px)}[dir=rtl] .b1-tline-fill--finals,[dir=rtl] .b1-swatch--finals{background:repeating-linear-gradient(-45deg,var(--progress) 0 4px,color-mix(in srgb,var(--progress) 70%,var(--surface)) 4px 6px)}@media (prefers-reduced-motion: reduce){.b1-tline-fill{transition:none}}@media (max-width: 600px){.b1-tline{font-size:14px;gap:8px}}.b1-tlines-how{display:flex;flex-direction:column;align-items:flex-start;gap:8px;margin-block-start:-12px}.b1-tlines-how .b1-link-btn{align-self:flex-start;padding-inline:0;color:var(--ink-2)}.b1-tlines-explain{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px;font-size:15px;color:var(--ink-2)}.b1-tlines-explain li{display:flex;align-items:baseline;gap:8px}.b1-swatch{flex:none;display:inline-block;inline-size:18px;block-size:8px;border-radius:4px}.b1-swatch--theory{background:var(--ink-2)}.b1-swatch--checks{background:var(--check)}.b1-deck-card{border-radius:20px}.b1-search-hit{outline:3px solid var(--progress);outline-offset:4px;animation:b1-search-hit 2s ease-out forwards}@keyframes b1-search-hit{0%,60%{outline-color:var(--progress)}to{outline-color:transparent}}@media (prefers-reduced-motion: reduce){.b1-search-hit{animation:none}}[data-search-dest]:focus:not(.b1-search-hit){outline:none}::highlight(search-hit){background-color:color-mix(in srgb,var(--reaction) 35%,transparent);color:var(--ink)}@media (forced-colors: active){::highlight(search-hit){background-color:Mark;color:MarkText}.b1-search-hit{outline-color:Highlight;animation:none}}.b1-card[data-block-id],.b1-problem,.b1-qcheck,.b1-inline-task,.b1-task{scroll-margin-block-start:88px;scroll-margin-block-end:96px}.b1-qcheck{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:10px}.b1-qcheck-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 12px}.b1-qcheck-tag{margin:0;font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--check)}.b1-inline-task{display:flex;flex-direction:column;gap:14px}.b1-inline-task .b1-act,.b1-main--task .b1-act{min-block-size:44px}.b1-inline-task>.b1-btn-primary{align-self:flex-start;min-inline-size:120px}.b1-condition--check{font-size:17px;line-height:1.6;margin:0}.b1-solved-line{display:block;font-weight:600}.b1-solution{display:flex;flex-direction:column;gap:6px}.b1-solution-label{margin:0;font-size:14px;color:var(--ink-2)}.b1-shown-line{display:flex;align-items:flex-start;gap:12px;padding-block:14px;border-block:1px solid var(--line);font-size:16px;font-weight:600;color:var(--ink)}.b1-shown-line--large{font-size:18px}.b1-shown-line svg{inline-size:20px;block-size:20px;flex:none;color:var(--ink-2);margin-block-start:.15em}.b1-shown-line:focus{outline:none}.b1-shown-line:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.b1-shown-note{margin:0;font-size:15px;color:var(--ink-2)}.b1-problem{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px;display:flex;flex-direction:column;gap:16px}.b1-problem-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px}.b1-problem-title{margin:0;font-size:17px;font-weight:700;flex:1 1 auto}.b1-problem-meta{color:var(--ink-2);font-size:15px;font-variant-numeric:tabular-nums}.b1-problem-mark{inline-size:1em;block-size:1em;margin-inline-start:4px;vertical-align:-.125em;color:var(--mascot-line)}.b1-problem-lang{font-size:12px;color:var(--ink-2);border:1px solid var(--line);border-radius:999px;padding:1px 8px}.b1-problem-body{display:flex;flex-direction:column;gap:16px}.b1-problem-statement{font-size:16px}.b1-problem-statement:focus{outline:none}.b1-problem-statement:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:4px}.b1-problem-part{border-block-start:1px solid var(--line);padding-block-start:16px}.b1-condition--part{font-size:16px;line-height:inherit;margin:0}.b1-part-letter{font-weight:700;margin-inline-end:8px}.b1-problem .b1-figure,.b1-problem img{max-inline-size:100%;block-size:auto}@media (max-width: 600px){.b1-problem{padding:16px}.b1-finals-nav .b1-btn-primary{align-self:stretch}.b1-seg--sm button{min-block-size:44px}}.b1-finals-nav .b1-btn-primary{align-self:flex-start}.b1-finals-rule{border:none;border-block-start:1px solid var(--line);margin:32px 0 0}.b1-finals-pager{align-items:center;justify-content:space-between}.b1-end-line{margin:0;text-align:center;color:var(--ink-2);font-size:15px}.b1-finals-pager .b1-end-line{text-align:end}.b1-dots{display:flex;justify-content:center;gap:6px}.b1-dots i{inline-size:8px;block-size:8px;border-radius:50%;background:var(--progress-track)}.b1-dots i.now{background:var(--ink-2)}.b1-cards-kicker{margin:0 0 -12px}.b1-block-end{block-size:1px;margin-block-start:-1px}.t6-work{display:flex;direction:ltr;align-items:flex-start;min-block-size:calc(100vh - 76px)}.t6-lesson{flex:1 1 auto;min-inline-size:0;max-inline-size:880px;margin-inline:auto;padding:28px 40px 60px}.t6-panel-slot{order:-1;flex:none;inline-size:560px;position:sticky;top:0;align-self:flex-start}@media (min-width: 1500px){.t6-panel-slot{inline-size:600px}}@media (max-width: 1150px){.t6-panel-slot{inline-size:440px}.t6-lesson{padding:24px 24px 48px}}@media (max-width: 1023.98px){.t6-panel-slot{inline-size:0;position:static}.t6-lesson{padding:20px 16px 40px}}.t6-panel{display:flex;flex-direction:column;block-size:calc(100vh - var(--t6-above, 76px));background:var(--surface);border-inline-end:1px solid var(--line);color:var(--ink)}.t6-work .t6-panel:not(.t6-panel--full){border-inline-end:0;border-right:1px solid var(--line)}.t6-panel{--muted: var(--ink-2);--ink-soft: var(--ink-2);--line-strong: var(--line)}.t6-panel--full{position:fixed;top:0;right:0;bottom:0;left:0;block-size:auto;z-index:60;border:0}.t6-panel-back{align-self:flex-start;margin:8px 20px 0;font-size:15px}.t6-panel-back+.t6-panel-head{padding-block-start:4px}.t6-panel--full .t6-panel-head{padding-block-start:4px}.t6-panel-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:24px 28px 8px}.t6-panel-kind{margin:0 0 4px;font-size:13px;color:var(--ink-2)}.t6-panel-title{margin:0;font-size:26px;line-height:1.2;font-weight:600}.t6-panel-title:focus{outline:none}.t6-panel-title:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.t6-panel-close{min-inline-size:44px;min-block-size:44px;border:0;border-radius:6px;background:transparent;color:var(--ink-2);font-size:28px;line-height:1;cursor:pointer}.t6-panel-close:hover{background:var(--surface-2)}.t6-panel-extra{padding:0 28px;display:flex;flex-direction:column;gap:10px}.t6-panel-body{flex:1 1 auto;overflow:auto;padding:8px 28px 16px}.t6-panel-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:14px 28px;border-block-start:1px solid var(--line);font-size:14px;color:var(--ink-2)}.t6-panel-foot .edit-dialog-actions{display:flex;gap:8px;margin-inline-start:auto}.t6-panel-foot button{min-block-size:44px;padding:8px 18px;border-radius:6px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font:inherit;cursor:pointer}.t6-panel-foot button.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent);font-weight:600}.t6-panel-foot button:disabled{opacity:.55;cursor:default}.t6-panel .edit-dialog-tabs{display:flex;gap:22px;border-block-end:1px solid var(--line);margin-block-end:18px}.t6-panel .edit-dialog-tabs button{min-block-size:44px;padding:7px 0 11px;border:0;border-block-end:2px solid transparent;border-radius:0;background:none;color:var(--ink-2);font:inherit;cursor:pointer}.t6-panel .edit-dialog-tabs button.active{color:var(--ink);border-block-end-color:var(--accent);font-weight:700}.t6-langs{display:flex;flex-wrap:wrap;gap:6px}.t6-langs button,.t6-pills button{min-block-size:44px;padding:5px 15px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink);font:inherit;font-size:15px;cursor:pointer}.t6-langs button[aria-pressed=true],.t6-pills button[aria-pressed=true]{background:var(--surface-2);border-color:var(--accent);font-weight:600}.t6-pills{display:flex;gap:6px;flex-wrap:wrap}.t6-states{list-style:none;margin:0;padding:0;font-size:14px;color:var(--ink-2);display:flex;flex-wrap:wrap;gap:4px 16px}.t6-outcome{margin:0;font-size:15px;font-weight:600;color:var(--accent)}.t6-outcome>svg{vertical-align:-2px}.t6-outcome p{margin:0}.t6-outcome--error{color:var(--error)}.t6-form{display:flex;flex-direction:column;gap:14px}.t6-field{display:flex;flex-direction:column;gap:8px;font-size:15px;font-weight:600}.t6-field input,.t6-field textarea{inline-size:100%;padding:12px 14px;border:1px solid var(--field-line);border-radius:6px;background:var(--bg);color:var(--ink);font:inherit;font-size:18px;font-weight:400;line-height:1.7}.t6-field input:focus-visible,.t6-field textarea:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.t6-check{display:flex;align-items:center;gap:10px;min-block-size:44px;font-size:15px}.t6-check input{inline-size:20px;block-size:20px;accent-color:var(--accent)}.t6-sub{margin:4px 0 0;font-size:13px;color:var(--ink-2)}.t6-preview{padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:var(--bg)}.t6-panel-body{container-type:inline-size;contain:size}.t6-split{display:flex;flex-direction:column;gap:14px}@container (min-width: 600px){.t6-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start}.t6-split>.t6-student-view{position:sticky;top:0}}@media (min-width: 1024px){.t6-panel-slot:has(.edit-dialog-pane:not([hidden]) .t6-split){inline-size:clamp(680px,64vw,1120px)}}.t6-preview{min-block-size:calc(1lh + 30px)}.t6-preview>.b1-mistakes{margin:0}@media (max-width: 767px){.t6-preview .b1-fig{inline-size:auto;margin-inline:0}.t6-preview .b1-fig-frame{max-inline-size:560px;border-inline:1px solid var(--line);border-radius:14px}}.t6-diff{padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:var(--bg);white-space:pre-wrap;line-height:1.7}.t6-diff ins{background:var(--accent-weak);text-decoration:underline}.t6-diff del{color:var(--ink-2)}.t6-lesson-part{border:1px solid var(--line);border-radius:8px;padding:12px 14px;display:flex;flex-direction:column;gap:10px}.t6-lesson-part legend{padding:0 6px;font-size:13px;color:var(--ink-2)}.t6-versions ul{list-style:none;margin:0 0 14px;padding:0}.t6-version{inline-size:100%;display:flex;align-items:center;gap:12px;min-block-size:44px;padding:12px 8px;border:0;border-block-end:1px solid var(--line);border-inline-start:3px solid transparent;border-radius:0;background:none;color:var(--ink);font:inherit;font-size:15px;text-align:start;cursor:pointer}.t6-version[aria-pressed=true]{background:var(--surface-2);border-inline-start-color:var(--accent)}.t6-version:before{content:"";flex:none;inline-size:16px;block-size:16px;box-sizing:border-box;border:1.5px solid var(--field-line);border-radius:50%}.t6-version[aria-pressed=true]:before{border:5px solid var(--accent);background:var(--surface)}.t6-version-main{display:flex;flex-direction:column}.t6-version-meta{font-size:13px;color:var(--ink-2)}.t6-version-state{margin-inline-start:auto;font-size:13px;color:var(--ink-2)}.t6-crumb{margin:0;font-size:14px;color:var(--ink-2)}.t6-status{display:flex;flex-wrap:wrap;align-items:center;gap:12px;font-size:14px}.t6-badge{border:1px solid var(--line);border-radius:6px;padding:3px 10px;background:var(--surface)}.t6-approved{color:var(--accent);display:inline-flex;align-items:center;gap:4px}.t6-unapproved{color:var(--error)}.t6-part-head{display:flex;justify-content:space-between;align-items:center;gap:12px}.t6-part-head>:first-child{margin:0}.t6-edit{display:inline-flex;align-items:center;gap:7px;min-block-size:44px;padding:8px 12px;border:0;border-radius:6px;background:transparent;color:var(--accent);font:inherit;font-size:14px;white-space:nowrap;cursor:pointer}.t6-edit:hover,.t6-edit[aria-pressed=true]{background:var(--surface-2)}.t6-edit:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.t6-edit-lesson{align-self:flex-start;border:1px solid var(--line)}.t6-pencil{inline-size:14px;block-size:14px;flex:none}.t6-label-row{flex-wrap:wrap}.t6-label{flex:1 1 16rem;min-inline-size:0}.t6-label>*{margin:0}.t6-label-row>.t6-edit{flex:none}.t6-label-actions{display:flex;flex-wrap:wrap;align-items:center;gap:4px 8px;flex:none}.t6-kind{margin:0;font-size:13px;color:var(--ink-2)}.t6-fallback{margin:0;font-size:14px;color:var(--ink-2)}.t6-status-note{color:var(--ink)}.t6-not-edited{margin:0;font-size:14px;color:var(--ink-2);padding-block-end:20px;border-block-end:1px solid var(--line)}@media (max-width: 767.98px){.t6-label-row>.t6-edit,.t6-label-actions>.t6-edit{padding-inline:0}}.t6-editing{border-inline-start:3px solid var(--accent);padding-inline-start:14px;margin-inline-start:-17px}.t6-lesson .t6-editing{scroll-margin-block-start:80px}.t6-trans{margin-block-start:8px}.t6-trans-line{margin:4px 0 0;font-size:14px;color:var(--ink-2)}.t6-trans-line--failed{color:var(--error)}.t6-task{display:flex;flex-direction:column;gap:10px}.t6-task-options{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.t6-task-options li{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:8px}.t6-task-radio{inline-size:16px;block-size:16px;margin-block-start:5px;border:1px solid var(--ink-2);border-radius:50%;flex:none}.t6-task-number input{inline-size:140px;padding:8px 10px;border:1px solid var(--field-line);border-radius:6px;background:var(--bg)}.t6-rules{border-block-start:1px solid var(--line);padding-block-start:16px;display:flex;flex-direction:column;gap:8px}.t6-rules ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.t6-rules li{padding-block:10px;border-block-end:1px solid var(--line)}.t6-rules li>button{flex:none}@media (max-width: 1023.98px){.t6-editing{margin-inline-start:0;padding-inline-start:12px}}.t6-fig{display:block}.t6-task .b1-meta,.t6-rules .b1-meta,.t6-versions .b1-meta,.t6-lesson>.b1-meta{text-align:start}.t6-lesson-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.t6-lesson-actions .t6-edit:disabled,.t6-lesson-actions .t6-edit[aria-disabled=true]{color:var(--ink-2);cursor:default}.t6-tr-frame{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:10px;font-size:15px}.t6-tr-frame p{margin:0}.t6-tr-frame h2:focus{outline:none}.t6-tr-frame h2:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.t6-tr-close{min-inline-size:44px;min-block-size:44px;border:0;border-radius:6px;background:transparent;color:var(--ink-2);font:inherit;font-size:22px;cursor:pointer}.t6-tr-close:hover{background:var(--surface-2)}.t6-tr-close:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.t6-tr-muted{color:var(--ink-2)}.t6-tr-head{font-size:15px;font-weight:700}.t6-tr-langs,.t6-tr-reasons{margin:0;padding-inline-start:20px;display:flex;flex-direction:column;gap:4px}.t6-tr-progress{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}.t6-tr-sub{display:flex;flex-direction:column;gap:6px}.t6-tr-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;font-size:14px}.t6-tr-list li{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 12px;min-block-size:32px}.t6-tr-actions .b1-btn{inline-size:auto}.t6-tr-frame .b1-link-btn{min-block-size:44px}.t6-status-sub{color:var(--ink-2);font-size:13px}.t6-preparing{color:var(--ink)}.t6-approval{display:flex;flex-direction:column;gap:10px}.t6-approval-row{display:flex;align-items:center;justify-content:space-between;gap:16px}.t6-approval-row .b1-btn{flex:none}.t6-approval-lead{margin:0;font-size:15px;color:var(--ink-2)}.t6-approval-btns{display:flex;flex-wrap:wrap;gap:8px}.t6-approval-lead--wait{color:var(--ink)}.b1-btn[aria-disabled=true]{opacity:.6;cursor:default}.t6-ap-frame .t6-part-head>h2{margin:0}.t6-ap-sub{margin:0;font-size:16px;font-weight:600}.t6-ap-blockers{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.t6-ap-blocker{display:flex;align-items:flex-start;gap:8px;color:var(--error);font-weight:600}.t6-ap-blocker svg{flex:none;margin-block-start:4px}.t6-ap-rows{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}.t6-ap-rows li{display:flex;justify-content:space-between;gap:4px 16px;padding-block:6px;border-block-end:1px solid var(--line)}.t6-ap-state{color:var(--ink-2);text-align:end}.t6-ap-state svg,.t6-ap-langs svg{color:var(--accent);vertical-align:-2px}.t6-ap-langs{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:4px 16px;font-size:14px;color:var(--ink-2)}.t6-ap-foot{display:flex;flex-direction:column;gap:10px;padding-block-start:14px;border-block-start:1px solid var(--line)}.t6-after-save{display:block;margin-block-start:8px;padding-block:6px;padding-inline-start:12px;border-inline-start:3px solid var(--accent);font-size:15px;color:var(--ink)}.t6-after-save .b1-link-btn{color:var(--accent);font-weight:600}.t6-press-reason{font-size:14px;color:var(--ink-2)}.t6-revoke-body{display:flex;flex-direction:column;gap:10px}.b1-dialog.b1-dialog--revoke{max-inline-size:560px;inline-size:100%}@media (max-width: 767.98px){.t6-approval-row{flex-direction:column;align-items:stretch}.t6-approval-row .b1-btn{inline-size:100%}.t6-ap-rows li{flex-direction:column}.t6-ap-state{text-align:start}.t6-ap-foot .t6-tr-actions{flex-direction:column}.t6-ap-foot .t6-tr-actions .b1-btn{inline-size:100%}.b1-dialog-backdrop:has(.b1-dialog--revoke){padding:0}.b1-dialog.b1-dialog--revoke{max-inline-size:none;block-size:100dvh;max-block-size:100dvh;border-radius:0;border:0}.b1-dialog--revoke .b1-dialog-actions{flex-direction:column}.b1-dialog--revoke .b1-dialog-actions .b1-btn{flex:none;inline-size:100%}}@media (forced-colors: active){.t6-ap-frame{border-color:CanvasText}.t6-ap-frame .b1-tline-track{border:1px solid CanvasText}.t6-ap-frame .b1-tline-fill{background:Highlight}}.t6-lesson-actions,.gen-actions,.gen-row,.lesson-bar{position:relative}.gen-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.gen-hint{display:inline-flex;max-inline-size:100%}.gen-tip{position:absolute;inset-inline-start:0;inset-block-start:100%;margin-block-start:4px;z-index:20;box-sizing:border-box;inline-size:max-content;max-inline-size:min(22rem,100%);padding:8px 12px;font-size:14px;font-weight:400;line-height:1.4;text-align:start;white-space:normal;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:none}.gen-tip[hidden]{display:none}.gen-btn[aria-disabled=true],.gen-retry[aria-disabled=true]{opacity:.6;cursor:default;box-shadow:none}.gen-actions .gen-btn,.gen-errors{min-block-size:44px}.gen-missing{margin:0;font-size:14px}.gen-frame{box-sizing:border-box;max-inline-size:100%}.gen-checks{display:flex;flex-direction:column}.gen-check{gap:4px}.gen-check--old{display:flex;align-items:center;gap:8px;min-block-size:44px;cursor:pointer}.gen-check--old input{inline-size:20px;block-size:20px;margin:0;flex:none;accent-color:var(--accent)}.gen-rows{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.gen-row{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;min-block-size:44px}.gen-name{flex:1 1 12rem;min-inline-size:0;font-weight:600}.gen-state{flex:0 1 auto;min-inline-size:0;overflow-wrap:anywhere}.gen-state--waiting{color:var(--ink-2)}.gen-state--done{color:var(--accent)}.gen-state--failed{color:var(--error)}.gen-count{color:var(--ink-2);font-variant-numeric:tabular-nums;unicode-bidi:isolate;white-space:nowrap}.gen-tline{flex:1 1 100%;grid-template-columns:1fr auto}.gen-retry{min-block-size:44px;min-inline-size:44px}.gen-retry.b1-btn{inline-size:auto}.gen-errors--old{background:none;border:0;padding:0 var(--s2, 8px);color:var(--ink);font:inherit;font-size:.85rem;text-decoration:underline;cursor:pointer}.gen-errors--old:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.tr-old-frame .gen-state--waiting,.tr-old-frame .gen-count{color:var(--muted)}.tr-old-frame .gen-state--failed{color:var(--danger)}@media (max-width: 767px){.gen-frame{inline-size:100%}.gen-name{flex-basis:100%}}@media (prefers-reduced-motion: reduce){.t6-tr-progress .b1-tline-fill{transition:none}}.b1-trrow{display:flex;justify-content:flex-end;min-block-size:20px}.b1-trrow--start{justify-content:flex-start}.b1-trmark{display:inline-block;line-height:20px;margin-block:-12px;padding:12px 4px;border:0;background:none;font:inherit;font-size:13px;color:var(--ink-2);cursor:pointer}.b1-trmark-act{color:var(--accent);font-weight:700;text-decoration:underline}.b1-trmark:focus-visible{outline:2px solid var(--accent);outline-offset:-8px;border-radius:6px}.b1-trtag,.b1-kicker-mark{white-space:nowrap}.t6-plus{inline-size:14px;block-size:14px;flex:none}.t6-new-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-block-size:44px}.t6-twin-foot{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px}.t6-new-caption{font-size:14px;color:var(--ink-2)}.t6-covers{margin:0;font-size:13px;color:var(--ink-2)}.t6-new-note{margin:0;font-size:14px;color:var(--ink-2)}.t6-new-slot{display:flex;flex-direction:column;gap:12px}.t6-new-slot [tabindex="-1"]:focus{outline:none}.t6-new-slot [tabindex="-1"]:focus-visible{outline:2px solid var(--accent);outline-offset:3px}.t6-new-slot [data-new-outcome],.t6-new-failed{border-radius:6px}.t6-finals-new{display:flex;flex-direction:column;gap:14px}.t6-finals-new>.b1-finals-rule{inline-size:100%}.t6-finals-new .b1-h2,.t6-finals-new .b1-meta{margin:0}.t6-new-status,.t6-new-viewline{margin:0;font-size:14px;color:var(--ink)}.t6-new-status .b1-link-btn,.t6-new-viewline .b1-link-btn{padding-inline:4px;align-self:baseline;min-block-size:44px;color:var(--accent);font-size:inherit}.t6-new-viewline .b1-link-btn{padding-inline:0}.t6-pager{display:flex;align-items:center;gap:2px;margin-inline-start:auto}.t6-pager-count{font-size:14px;color:var(--ink-2);font-variant-numeric:tabular-nums;padding-inline:4px}.t6-pager-btn{inline-size:44px;block-size:44px;display:inline-flex;align-items:center;justify-content:center;border:0;border-radius:6px;background:transparent;color:var(--accent);cursor:pointer}.t6-pager-btn:hover{background:var(--surface-2)}.t6-pager-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.t6-pager-btn[aria-disabled=true]{color:var(--ink-2);opacity:.5;cursor:default}.t6-pager-btn[aria-disabled=true]:hover{background:transparent}.t6-pager-arrow{inline-size:18px;block-size:18px}.t6-pager-btn--next .t6-pager-arrow,.t6-pager[dir=rtl] .t6-pager-arrow{transform:scaleX(-1)}.t6-pager[dir=rtl] .t6-pager-btn--next .t6-pager-arrow{transform:none}.t6-new-writing{background:var(--surface-2);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:6px}.t6-new-writing-line{margin:0;font-size:16px;font-weight:600;color:var(--ink)}.t6-new-skeleton{display:flex;flex-direction:column;gap:8px;margin-block-start:8px}.t6-new-skeleton .b1-pulse{block-size:12px;background:var(--line)}.t6-new-skeleton .b1-pulse:nth-child(2){inline-size:85%}.t6-new-skeleton .b1-pulse:nth-child(3){inline-size:60%}@media (prefers-reduced-motion: reduce){.t6-new-skeleton .b1-pulse{animation:none}}.t6-new-failed{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px}.t6-new-failed .t6-outcome{flex:0 1 auto}.t6-new-card{background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;flex-direction:column;gap:12px}.t6-new-card[data-new-well=final]{border-radius:20px;padding:24px}.t6-new-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:6px 12px}.t6-new-head .t6-badge{font-size:14px}.t6-new-label{margin:0;font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--ink)}.t6-new-by{margin:0;font-size:13px;color:var(--ink-2)}.t6-new-task{display:flex;flex-direction:column;gap:12px}.t6-new-part{display:flex;flex-direction:column;gap:10px;border-block-start:1px solid var(--line);padding-block-start:12px}.t6-new-part-head{margin:0;font-size:14px;font-weight:700;color:var(--ink)}.t6-new-foot{border-block-start:1px solid var(--line);padding-block-start:14px;display:flex;flex-direction:column;gap:12px}.t6-new-warning{display:flex;align-items:flex-start;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;color:var(--ink);font-size:15px}.t6-new-warning p{margin:0}.t6-new-warn-icon{flex:none;inline-size:18px;block-size:18px;margin-block-start:2px;border:1.5px solid var(--ink);border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;line-height:1}.t6-new-actions{display:flex;flex-wrap:wrap;align-items:center;gap:10px 12px}.t6-new-end{flex:1 1 14rem;font-size:14px;color:var(--ink-2)}@media (max-width: 767.98px){.t6-new-card,.t6-new-card[data-new-well=final],.t6-new-writing{padding:16px}.t6-new-actions .b1-btn{flex:1 1 calc(50% - 6px)}.t6-new-end{flex:1 1 100%}.t6-pager{flex:1 1 100%;margin-inline-start:0;justify-content:flex-start}}.t6-task-option--right{background:var(--surface-2);border-color:var(--accent)}.t6-task-options li{align-items:flex-start}.t6-task-tick{inline-size:16px;block-size:16px;flex:none;margin-block-start:5px;color:var(--accent)}.t6-task-option-body{display:flex;flex-direction:column;gap:4px;flex:1 1 auto;min-inline-size:0}.t6-task-option-text{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:2px 12px}.t6-task-right{font-size:14px;font-weight:700;color:var(--accent)}.t6-task-why{margin:0;font-size:14px;color:var(--ink-2)}.t6-task-answer{margin:0;font-size:15px;font-weight:600}.t6-new-card .t6-task-option--right{background:var(--surface)}.t6-review{display:flex;flex-direction:column;gap:10px}.t6-review-toggle{align-self:flex-start;display:inline-flex;align-items:center;gap:6px;min-block-size:44px;padding:0 8px;border:0;border-radius:6px;background:transparent;color:var(--accent);font:inherit;font-size:14px;font-weight:600;cursor:pointer}.t6-review-toggle:hover{background:var(--surface-2)}.t6-review-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.t6-review-chevron{inline-size:16px;block-size:16px;transition:transform .15s}.t6-review-toggle[aria-expanded=true] .t6-review-chevron{transform:rotate(180deg)}@media (prefers-reduced-motion: reduce){.t6-review-chevron{transition:none}}.t6-review-field{display:flex;flex-direction:column;gap:4px}.t6-review-label{margin:0;font-size:13px;font-weight:700;color:var(--ink-2)}.t6-review-text>:first-child{margin-block-start:0}.t6-review-text>:last-child{margin-block-end:0}.t6-review-none{font-size:14px;color:var(--ink-2)}.t6-review-steps{margin:0;padding-inline-start:22px;display:flex;flex-direction:column;gap:4px}.b1-dialog.b1-dialog--new{inline-size:100%}.b1-dialog.b1-dialog--choice,.b1-dialog.b1-dialog--confirm.b1-dialog--new{max-inline-size:560px}.t6-choice-form{display:flex;flex-direction:column;gap:14px}.t6-choice-group{margin:0;padding:0;border:0;min-inline-size:0;display:flex;flex-direction:column;gap:2px}.t6-choice-group legend{padding:0 0 6px;font-size:14px;font-weight:700;color:var(--ink-2)}.t6-choice-row{display:flex;align-items:center;gap:12px;min-block-size:44px;padding:6px 10px;border:1px solid var(--line);border-radius:8px;cursor:pointer}.t6-choice-row+.t6-choice-row{margin-block-start:6px}.t6-choice-row:has(input:checked){background:var(--surface-2);border-color:var(--accent)}.t6-choice-row:has(input:focus-visible){outline:2px solid var(--accent);outline-offset:2px}.t6-choice-row input{inline-size:20px;block-size:20px;flex:none;accent-color:var(--accent)}.t6-choice-row[data-taken]{cursor:default;color:var(--ink-2)}.t6-choice-text{flex:1 1 auto;min-inline-size:0;overflow-wrap:anywhere}.t6-choice-state{flex:none;font-size:14px;color:var(--ink-2);margin-inline-start:auto}.t6-choice-all{color:var(--ink)}@media (max-width: 767.98px){.b1-dialog-backdrop:has(.b1-dialog--choice){padding:0}.b1-dialog.b1-dialog--choice{max-inline-size:none;block-size:100dvh;max-block-size:100dvh;border-radius:0;border:0;padding-block-end:0}.t6-choice-form{flex:1 1 auto;min-block-size:0}.t6-choice-actions{position:sticky;inset-block-end:0;margin-block-start:auto;background:var(--surface);padding-block:12px 24px;border-block-start:1px solid var(--line)}.b1-dialog--new .b1-dialog-actions{flex-direction:column}.b1-dialog--new .b1-dialog-actions .b1-btn{flex:none;inline-size:100%}}.b1-class-tabs{display:flex;gap:4px;border-block-end:1px solid var(--line)}.b1-class-tabs a{position:relative;display:inline-flex;align-items:center;min-block-size:44px;padding:8px 12px;color:var(--ink-2);font-weight:600;font-size:17px;text-decoration:none}.b1-class-tabs a.active{color:var(--ink)}.b1-class-tabs a.active:after{content:"";position:absolute;inset-inline:12px;inset-block-end:-1px;block-size:2px;border-radius:2px;background:var(--accent)}.b1-class-tabs a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-card--stripe{border-inline-start:4px solid var(--accent)}.b1-topic-eyebrow{margin:0 0 12px;font-size:14px;font-weight:600;color:var(--ink-2)}.b1-topic-current{display:flex;gap:16px;align-items:flex-start}.b1-topic-square{flex:none;display:grid;place-items:center;min-inline-size:60px;block-size:60px;padding-inline:8px;border-radius:6px;background:var(--accent);color:var(--on-accent);font-size:22px;font-weight:600}.b1-topic-current-body{display:flex;flex-direction:column;gap:6px;min-inline-size:0}.b1-topic-current-title{margin:0;font-size:22px;font-weight:600;line-height:1.2;overflow-wrap:anywhere}.b1-topic-current-chapter,.b1-topic-count{margin:0;font-size:14.5px;color:var(--ink-2)}.b1-topic-warning{margin:0;display:flex;align-items:center;gap:6px;font-size:15px;color:var(--error)}.b1-topic-icon{flex:none}.b1 .b1-topic-open{inline-size:auto;align-self:flex-start;min-block-size:44px;font-size:16px;margin-block-start:6px;text-decoration:none}.b1-topic-none{margin:0;font-size:16px;color:var(--ink)}.b1-topic-card-head{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:4px 12px;margin-block-end:8px}.b1-topic-card-head .b1-card-title{margin:0}.b1-ahead-chapter+.b1-ahead-chapter{margin-block-start:14px}.b1-ahead-chapter-title{margin:0 0 8px;font-family:inherit;font-size:15px;font-weight:600}.b1-chips{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px}.b1-chip{display:inline-flex;align-items:center;max-inline-size:100%;border-radius:6px;background:var(--surface-2);color:var(--accent);font-size:15px}.b1-chip-text{padding-block:6px;padding-inline:10px 6px;overflow-wrap:anywhere}.b1-chip-note{color:var(--ink)}.b1-chip-x{flex:none;display:grid;place-items:center;inline-size:44px;block-size:44px;border:0;border-inline-start:1px solid var(--line);background:none;color:var(--accent);cursor:pointer}.b1-chip-x[aria-disabled=true]{cursor:default}.b1-chip-x:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.b1-topic-status p{margin:0;min-block-size:1.4em;font-size:15px;color:var(--ink)}.b1-topic-status p:not(:empty){padding:10px 14px;border-radius:12px;background:var(--surface-2)}.b1-topic-status .b1-topic-status-error{color:var(--error)}.b1-dialog.b1-dialog--topic{display:grid;grid-template-columns:minmax(0,1fr) auto;align-content:start;gap:0;padding:0;inline-size:100%;max-inline-size:1100px;block-size:calc(100dvh - 40px)}.b1-dialog--topic>*{grid-column:1 / -1}.b1-dialog--topic>.b1-dialog-title{grid-row:2;grid-column:1;padding:20px 24px 0;font-size:24px}.b1-dialog--topic>.b1-topic-x{grid-row:2;grid-column:2}.b1-topic-bar{grid-row:1;display:flex;align-items:center;gap:16px;padding:10px 24px;background:var(--accent);color:var(--on-accent)}.b1-topic-bar-text{flex:1 1 auto;min-inline-size:0;margin:0;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.b1-topic-bar-btn{flex:none;min-block-size:44px;padding:0 12px;border:0;background:none;color:var(--on-accent);font:inherit;font-size:15px;font-weight:600;text-decoration:underline;cursor:pointer}.b1-topic-x{display:grid;place-items:center;inline-size:44px;block-size:44px;margin:12px 12px 0;border:0;border-radius:12px;background:none;color:var(--ink);cursor:pointer}.b1-topic-bar-btn:focus-visible,.b1-topic-x:focus-visible,.b1-topic-group-head:focus-visible,.b1-topic-chapter:focus-visible,.b1-topic-filter:focus-visible,.b1-topic-pick:focus-visible,.b1-check:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.b1-topic-bar-btn:focus-visible{outline-color:var(--on-accent)}.b1-topic-sub{margin:4px 0 0;padding-inline:24px;font-size:15px;color:var(--ink-2)}.b1-topic-none-approved{margin:12px 24px 0;padding:10px 14px;border-radius:12px;background:var(--surface-2);font-size:15px}.b1-topic-load{display:flex;flex-direction:column;gap:12px;padding:24px}.b1-topic-layout{display:grid;grid-template-columns:238px minmax(0,1fr);gap:28px;padding:16px 24px 0;align-items:start}.b1-topic-nav{position:sticky;inset-block-start:0;max-block-size:calc(100dvh - 260px);overflow-y:auto}.b1-topic-group ul{list-style:none;margin:0;padding:0}.b1-topic-group-head{display:flex;align-items:center;justify-content:space-between;inline-size:100%;min-block-size:44px;padding:0 8px;border:0;background:none;color:var(--ink-2);font:inherit;font-size:14px;font-weight:600;text-align:start;cursor:pointer}.b1-topic-chapter{display:flex;align-items:center;gap:10px;inline-size:100%;min-block-size:44px;padding:8px;border:0;border-radius:12px;background:none;color:var(--ink);font:inherit;font-size:15px;text-align:start;cursor:pointer}.b1-topic-chapter[aria-current=true]{background:var(--surface-2);font-weight:600;color:var(--accent)}.b1-topic-chapter-num{flex:none;min-inline-size:22px;font-size:14px;color:var(--ink-2)}.b1-topic-chapter-name{flex:1 1 auto;min-inline-size:0}.b1-topic-dot{flex:none;inline-size:8px;block-size:8px;border-radius:50%;background:var(--accent)}.b1-topic-select{display:none}.b1-topic-main-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 12px}.b1-topic-chapter-title{margin:0;font-family:inherit;font-size:22px;font-weight:600}.b1-topic-chapter-meta{margin:0;font-size:14.5px;color:var(--ink-2)}.b1-topic-tools{display:flex;flex-wrap:wrap;align-items:flex-end;gap:12px 16px;margin:14px 0}.b1-topic-filters{display:flex;gap:6px}.b1-topic-filter{min-block-size:44px;padding:0 16px;border:1.5px solid var(--line);border-radius:999px;background:var(--bg);color:var(--ink);font:inherit;font-size:15px;cursor:pointer}.b1-topic-filter[aria-pressed=true]{border-color:var(--mascot-line);background:var(--surface-2);font-weight:600}.b1-topic-search{display:flex;flex-direction:column;gap:4px;flex:1 1 200px;max-inline-size:360px;font-size:14px;color:var(--ink-2)}.b1-topic-search .b1-input,.b1-topic-select select{min-block-size:44px;font-size:16px;direction:inherit;unicode-bidi:plaintext}.b1-topic-empty{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:16px 0}.b1-topic-empty p{margin:0;font-size:16px}.b1-topic-empty .b1-btn{inline-size:auto;min-block-size:44px;font-size:16px}.b1-topic-rows{list-style:none;margin:0;padding:0;border-block:1px solid var(--line)}.b1-topic-row{display:flex;flex-wrap:wrap;align-items:center;gap:4px 16px;padding:10px 8px;border-inline-start:3px solid transparent}.b1-topic-row+.b1-topic-row{border-block-start:1px solid var(--line)}.b1-topic-row.is-current{border-inline-start-color:var(--accent);background:var(--surface-2)}.b1-topic-row.is-selected{outline:2px solid var(--accent);outline-offset:-2px}.b1-topic-pick{flex:1 1 260px;display:flex;align-items:baseline;gap:10px;min-block-size:44px;padding:4px;border:0;background:none;color:var(--ink);font:inherit;text-align:start;cursor:pointer}.b1-topic-pick[aria-disabled=true]{cursor:default}.b1-topic-code{flex:none;min-inline-size:40px;font-size:15px;color:var(--ink-2)}.b1-topic-name{font-size:16px;font-weight:600;overflow-wrap:anywhere}.b1-topic-row.is-unapproved .b1-topic-name{color:var(--ink-2)}.b1-topic-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 14px;font-size:14px;color:var(--ink)}.b1-topic-state{font-weight:600;color:var(--accent)}.b1-topic-state:empty{display:none}.b1-topic-approval{display:inline-flex;align-items:center;gap:6px}.b1-topic-saving{color:var(--ink-2)}.b1-topic-ahead{display:inline-flex;align-items:center;gap:4px;min-block-size:44px;cursor:pointer}.b1-check{-moz-appearance:none;appearance:none;-webkit-appearance:none;position:relative;flex:none;inline-size:20px;block-size:20px;margin:12px;border:1.5px solid var(--field-line);border-radius:4px;background:var(--surface);cursor:pointer}.b1-check:checked{border-color:var(--accent);background:var(--accent)}.b1-check:checked:after{content:"";position:absolute;left:5.5px;top:1.5px;inline-size:5px;block-size:10px;border:solid var(--on-accent);border-width:0 2px 2px 0;transform:rotate(45deg)}.b1-check[aria-disabled=true]{cursor:default;border-style:dashed}.b1-dialog--topic>.b1-topic-status{padding:12px 24px 0}.b1-topic-foot,.b1-topic-confirm{position:sticky;inset-block-end:0;margin-block-start:12px;padding:14px 24px 18px;border-block-start:1px solid var(--line);background:var(--surface)}.b1-topic-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}.b1-topic-foot p{margin:0;font-size:15px;color:var(--ink-2)}.b1-topic-foot .b1-btn{inline-size:auto;min-block-size:44px;font-size:16px}.b1-topic-confirm{display:flex;flex-direction:column;gap:6px}.b1-topic-confirm-title{margin:0;font-family:inherit;font-size:19px;font-weight:600;outline:none}.b1-topic-confirm-topic,.b1-topic-confirm-text{margin:0;font-size:15px}.b1-topic-confirm .b1-dialog-actions{margin-block-start:6px}.b1-topic-confirm .b1-btn{min-block-size:44px;font-size:16px}@media (max-width: 1099.98px){.b1-topic-layout{grid-template-columns:195px minmax(0,1fr);gap:20px}}@media (max-width: 767.98px){.b1-dialog-backdrop:has(.b1-dialog--topic){padding:0}.b1-dialog.b1-dialog--topic{max-inline-size:none;block-size:100dvh;max-block-size:100dvh;border-radius:0;border:0}.b1-topic-bar,.b1-dialog--topic>.b1-dialog-title,.b1-topic-sub,.b1-dialog--topic>.b1-topic-status,.b1-topic-foot,.b1-topic-confirm{padding-inline:16px}.b1-topic-layout{grid-template-columns:minmax(0,1fr);padding-inline:16px;gap:12px}.b1-topic-nav{display:none}.b1-topic-select{display:flex;flex-direction:column;gap:4px;font-size:14px;color:var(--ink-2)}.b1-topic-select select{border:1.5px solid var(--field-line);border-radius:12px;padding:0 12px;background:var(--surface);color:var(--ink)}.b1-topic-tools{flex-wrap:nowrap;align-items:flex-end}.b1-topic-filter{padding:0 10px}.b1-topic-pick{flex-basis:100%}.b1-topic-status--confirming{display:none}.b1-topic-current{flex-direction:column}}.cabinet-picker{display:flex;flex-direction:column;gap:20px}.cabinet-picker-fields{display:flex;flex-direction:column;gap:20px;border:0;padding:0;margin:0;min-inline-size:0}.cabinet-pill-group{display:flex;flex-wrap:wrap;gap:10px}.cabinet-pill{display:inline-flex;align-items:center;justify-content:center;block-size:44px;min-inline-size:44px;padding:0 18px;border-radius:999px;border:1.5px solid var(--line);background:var(--bg);color:var(--ink);font-size:16px;font-family:inherit;cursor:pointer}.cabinet-pill[aria-pressed=true]{border-color:var(--mascot-line);background:var(--surface-2);font-weight:600}.cabinet-pill:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.cabinet-subject-value{margin:0;font-size:18px;color:var(--ink)}.cabinet-summary{margin:0}.b1-input.cabinet-name-input{direction:inherit;unicode-bidi:plaintext}.s4-root{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:flex;flex-direction:column;background:var(--surface);font-family:Assistant,"Source Sans 3",sans-serif;overflow-x:clip}@media (min-width: 600px){.s4-root{inset-inline-start:auto;inset-inline-end:0;inline-size:clamp(280px,40vw,480px);box-shadow:0 0 0 1px var(--line)}}@media (min-width: 600px){body.s4-chat-open .content{width:auto;margin-inline-end:clamp(280px,40vw,480px)}body.s4-chat-open .topbar{margin-inline-end:clamp(280px,40vw,480px);flex-wrap:wrap}}.s4-header{flex:none;display:flex;flex-direction:column;gap:6px;padding:14px 16px;border-block-end:1px solid var(--line)}.s4-header-row{display:flex;align-items:center;gap:10px}.s4-back{min-block-size:44px;padding:0 12px;border-radius:12px;background:var(--surface);border:1px solid var(--line);color:var(--ink);display:inline-flex;align-items:center;gap:6px;cursor:pointer;font-family:inherit;font-size:14px;flex:none}.s4-back:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.s4-back svg{transform:scaleX(-1)}.b1[dir=rtl] .s4-back svg{transform:scaleX(1)}.s4-header-spacer{flex:1}.s4-only-you{margin:0;font-size:13px;color:var(--ink-2)}.s4-task-strip{flex:none;display:flex;align-items:center;gap:10px;inline-size:100%;text-align:start;padding:12px 16px;background:var(--surface-2);border:none;border-block-end:1px solid var(--line);cursor:pointer;font-family:inherit;color:var(--ink);min-block-size:44px}.s4-task-strip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.s4-task-strip-text{flex:1;display:flex;flex-direction:column;gap:2px;min-inline-size:0}.s4-task-strip-title{font-size:12.5px;color:var(--ink-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.s4-task-strip svg{flex:none;transform:rotate(90deg)}.s4-task-strip-answer{font-size:14px;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}@media (min-width: 600px){.s4-task-strip{display:none}}.s4-messages{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:12px;padding:16px 16px 8px}.s4-messages:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.s4-msg{max-inline-size:78%;border-radius:16px;padding:12px 16px;font-size:15px;line-height:1.55;animation:s4-in .2s ease;overflow-wrap:anywhere}.s4-msg-bagira{align-self:flex-start;background:var(--surface-2);color:var(--ink);border:1px solid var(--line)}.s4-msg-student{align-self:flex-end;background:var(--accent);color:var(--on-accent)}.s4-msg-ghost{align-self:flex-end;background:var(--surface-2);border:1.5px dashed var(--line);color:var(--ink-2);font-style:italic}.s4-msg-ghost-caption{display:block;font-size:12px;font-style:normal;margin-block-start:4px;opacity:.85}.s4-cursor{display:inline-block;inline-size:2px;block-size:1em;margin-inline-start:2px;vertical-align:text-bottom;background:currentColor;animation:s4-blink 1s step-end infinite}@keyframes s4-in{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}@keyframes s4-blink{0%,to{opacity:1}50%{opacity:0}}@media (prefers-reduced-motion: reduce){.s4-msg,.s4-cursor{animation:none}}.s4-notice{margin:0 16px;background:var(--surface-2);border:1px solid var(--error);color:var(--error);border-radius:12px;padding:12px 16px;font-size:14px;display:flex;flex-direction:column;gap:8px;align-items:flex-start}.s4-notice-quiet{margin:0 16px;background:var(--surface-2);border:1px solid var(--line);color:var(--ink-2);border-radius:12px;padding:12px 16px;font-size:14px}.s4-retry{min-block-size:40px;padding:0 14px;border-radius:10px;background:transparent;border:1.5px solid var(--error);color:var(--error);display:inline-flex;align-items:center;gap:6px;cursor:pointer;font-family:inherit;font-size:14px}.s4-retry:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.s4-footer{flex:none;padding:12px 16px 16px;display:flex;flex-direction:column;gap:10px;border-block-start:1px solid var(--line)}.s4-chips{display:flex;flex-wrap:wrap;gap:8px}.s4-chip{min-block-size:44px;padding:0 16px;border-radius:999px;background:var(--surface);border:1.5px solid var(--mascot-line);color:var(--ink);font-size:14px;font-family:inherit;cursor:pointer}.s4-chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.s4-chip:disabled{opacity:.5;cursor:default}.s4-input-row{display:flex;gap:8px;align-items:center}.s4-input{flex:1;min-block-size:52px;border-radius:12px;background:var(--surface);border:1.5px solid var(--line);color:var(--ink);padding:0 16px;font-size:15px;font-family:inherit}.s4-input:focus-visible{outline:none;border-color:var(--ink)}.s4-input:disabled{opacity:.7}.s4-send{inline-size:48px;block-size:48px;border-radius:50%;background:var(--accent);color:var(--on-accent);border:none;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;flex:none}.s4-send:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.s4-send:disabled{opacity:.6;cursor:default}.b1[dir=rtl] .s4-send svg{transform:scaleX(-1)}.s4-sr-only{position:absolute;inline-size:1px;block-size:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.s4-launch{min-block-size:44px;padding:0 16px;border-radius:12px;background:var(--surface);border:1.5px solid var(--mascot-line);color:var(--ink);font-size:14px;font-family:inherit;cursor:pointer}.s4-launch:focus-visible{outline:2px solid var(--accent);outline-offset:2px}