@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/golos-text-cyrillic-ext-400-normal-Bo67NYBq.woff2)format("woff2"),url(/assets/golos-text-cyrillic-ext-400-normal-D592xEk3.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/golos-text-cyrillic-400-normal-C7us6pn1.woff2)format("woff2"),url(/assets/golos-text-cyrillic-400-normal-BwL4n7Pb.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/golos-text-latin-ext-400-normal-BjKcJWKY.woff2)format("woff2"),url(/assets/golos-text-latin-ext-400-normal-BXgyX_iE.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/golos-text-latin-400-normal-Coi1FYaD.woff2)format("woff2"),url(/assets/golos-text-latin-400-normal-DOuJOmdK.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/golos-text-cyrillic-ext-500-normal-CLsu_eDI.woff2)format("woff2"),url(/assets/golos-text-cyrillic-ext-500-normal-InHNvB7v.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/golos-text-cyrillic-500-normal-BSLQUuP1.woff2)format("woff2"),url(/assets/golos-text-cyrillic-500-normal-hXinzVVQ.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/golos-text-latin-ext-500-normal-9vZPKadr.woff2)format("woff2"),url(/assets/golos-text-latin-ext-500-normal-BmtMVntR.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/golos-text-latin-500-normal-BznAvurO.woff2)format("woff2"),url(/assets/golos-text-latin-500-normal-BQo4s7Kn.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/golos-text-cyrillic-ext-600-normal-uuhKjiyO.woff2)format("woff2"),url(/assets/golos-text-cyrillic-ext-600-normal-rSWq63aw.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/golos-text-cyrillic-600-normal-lpQ9rVRR.woff2)format("woff2"),url(/assets/golos-text-cyrillic-600-normal-BgvEFMNR.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/golos-text-latin-ext-600-normal-DLLCs_GQ.woff2)format("woff2"),url(/assets/golos-text-latin-ext-600-normal-C6iohuVX.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Golos Text;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/golos-text-latin-600-normal-Bhk8uV1U.woff2)format("woff2"),url(/assets/golos-text-latin-600-normal-B_o32mE8.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:PT Serif;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/pt-serif-cyrillic-ext-400-normal-DU92duxl.woff2)format("woff2"),url(/assets/pt-serif-cyrillic-ext-400-normal-DWZRXqV9.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:PT Serif;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/pt-serif-cyrillic-400-normal-B-euljER.woff2)format("woff2"),url(/assets/pt-serif-cyrillic-400-normal-D8jOFnDU.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:PT Serif;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/pt-serif-latin-ext-400-normal-B7STXmTm.woff2)format("woff2"),url(/assets/pt-serif-latin-ext-400-normal-tfSDtiqN.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:PT Serif;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/pt-serif-latin-400-normal-Cx0mQj7e.woff2)format("woff2"),url(/assets/pt-serif-latin-400-normal-DIu_lRW0.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:PT Serif;font-style:italic;font-display:swap;font-weight:400;src:url(/assets/pt-serif-cyrillic-ext-400-italic-3ud5gcxD.woff2)format("woff2"),url(/assets/pt-serif-cyrillic-ext-400-italic-BBGP3z3x.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:PT Serif;font-style:italic;font-display:swap;font-weight:400;src:url(/assets/pt-serif-cyrillic-400-italic-Bicg0I0x.woff2)format("woff2"),url(/assets/pt-serif-cyrillic-400-italic-CGr2MaNX.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:PT Serif;font-style:italic;font-display:swap;font-weight:400;src:url(/assets/pt-serif-latin-ext-400-italic-CBoOQ8LN.woff2)format("woff2"),url(/assets/pt-serif-latin-ext-400-italic-C59QcYwb.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:PT Serif;font-style:italic;font-display:swap;font-weight:400;src:url(/assets/pt-serif-latin-400-italic-zg5EJ2cW.woff2)format("woff2"),url(/assets/pt-serif-latin-400-italic-Hdd9Jed5.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:PT Serif;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/pt-serif-cyrillic-ext-700-normal-CpXZPNZI.woff2)format("woff2"),url(/assets/pt-serif-cyrillic-ext-700-normal-C7FyUQsB.woff)format("woff");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:PT Serif;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/pt-serif-cyrillic-700-normal-DvVvs_4R.woff2)format("woff2"),url(/assets/pt-serif-cyrillic-700-normal-BeN6CUoB.woff)format("woff");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:PT Serif;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/pt-serif-latin-ext-700-normal-B7jTzfC-.woff2)format("woff2"),url(/assets/pt-serif-latin-ext-700-normal-BQOBW4N0.woff)format("woff");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:PT Serif;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/pt-serif-latin-700-normal-Bsuo9jes.woff2)format("woff2"),url(/assets/pt-serif-latin-700-normal-BnJLcJ8K.woff)format("woff");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--desk:#e9edf3;--paper:#fff;--ink:#15203b;--ink-soft:#55617a;--rule:#cfd7e4;--accent:#1f3fa8;--accent-ink:#fff;--correct:#17693f;--wrong:#b3232b;--edge:#8a5a00;--tint:#eef2fb;--ui:"Golos Text", system-ui, -apple-system, "Segoe UI", sans-serif;--sheet:"PT Serif", Georgia, "Times New Roman", serif;--gutter:16px;--column:760px;--radius:6px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--desk:#0e131b;--paper:#171e2a;--ink:#e7ecf4;--ink-soft:#9aa6ba;--rule:#2b3648;--accent:#93abff;--accent-ink:#0e131b;--correct:#62c791;--wrong:#ff8f8f;--edge:#e5b454;--tint:#1d2636;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--desk:#0e131b;--paper:#171e2a;--ink:#e7ecf4;--ink-soft:#9aa6ba;--rule:#2b3648;--accent:#93abff;--accent-ink:#0e131b;--correct:#62c791;--wrong:#ff8f8f;--edge:#e5b454;--tint:#1d2636;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{background:var(--desk);color:var(--ink);font-family:var(--ui);margin:0;font-size:16px;line-height:1.5}h1,h2{margin:0 0 8px;font-weight:600;line-height:1.25}h1{font-size:1.5rem}h2{font-size:1.0625rem}p{margin:0 0 12px}a{color:var(--accent)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.shell{min-height:100dvh;padding-bottom:calc(64px + env(safe-area-inset-bottom))}.shell-bare{padding-bottom:32px}.topbar{padding:10px var(--gutter);padding-top:calc(10px + env(safe-area-inset-top));justify-content:space-between;align-items:center;gap:12px;display:flex}.brand{color:var(--ink);font-weight:600;text-decoration:none}.topbar-tools{gap:6px;display:flex}.tool{font:inherit;color:var(--ink-soft);border:1px solid var(--rule);border-radius:var(--radius);cursor:pointer;background:0 0;min-height:32px;padding:4px 10px;font-size:.8125rem}.nav{z-index:5;background:var(--paper);border-top:1px solid var(--rule);padding-bottom:env(safe-area-inset-bottom);grid-auto-columns:1fr;grid-auto-flow:column;display:grid;position:fixed;inset:auto 0 0}.nav a{text-align:center;min-height:56px;color:var(--ink-soft);border-top:2px solid #0000;place-items:center;padding:10px 4px;font-size:.8125rem;text-decoration:none;display:grid}.nav a.active{color:var(--accent);border-top-color:var(--accent);font-weight:500}.page{max-width:var(--column);padding:8px var(--gutter) 0;margin:0 auto}@media (width>=900px){.shell{padding-bottom:32px}.shell:not(.shell-bare){padding-left:220px}.nav{border-top:0;border-right:1px solid var(--rule);flex-direction:column;align-content:start;width:220px;padding:64px 12px 0;display:flex;inset:0 auto 0 0}.nav a{text-align:left;border-top:0;border-left:2px solid #0000;place-items:center start;min-height:44px;padding:8px 12px;font-size:.9375rem}.nav a.active{border-left-color:var(--accent);background:var(--tint)}}.block{margin:0 0 28px}.block-tight{margin-bottom:12px}.muted{color:var(--ink-soft);font-size:.9375rem}.notice{border-left:3px solid var(--edge);background:var(--tint);padding:8px 12px;font-size:.9375rem}.notice-strong{border-left-color:var(--wrong)}.list{margin:0 0 16px;padding-left:20px}.list li{margin-bottom:6px}.quote{font-family:var(--sheet);border-left:2px solid var(--rule);color:var(--ink-soft);margin:0 0 20px;padding:2px 0 2px 14px}.button{font:inherit;color:var(--accent-ink);background:var(--accent);border:1px solid var(--accent);border-radius:var(--radius);cursor:pointer;min-height:44px;padding:10px 18px;font-weight:500;text-decoration:none;display:inline-block}.button-quiet{color:var(--accent);border-color:var(--rule);background:0 0;font-weight:400}.button:disabled{opacity:.45;cursor:default}.actions{flex-wrap:wrap;gap:8px;margin:10px 0;display:flex}.rows{border-top:1px solid var(--rule);margin:0;padding:0;list-style:none}.row{border-bottom:1px solid var(--rule);min-height:56px;color:var(--ink);align-items:center;gap:12px;padding:12px 2px;text-decoration:none;display:flex}.row-disabled{color:var(--ink-soft)}.row-lead{font-family:var(--sheet);color:var(--ink-soft);text-align:right;flex:0 0 28px;font-size:1.125rem}.row-main{flex:1;min-width:0}.row-tail{text-align:right;color:var(--ink-soft);flex:none;font-size:.9375rem}a.row .row-tail{color:var(--accent)}.row-sub{color:var(--ink-soft);font-size:.8125rem;display:block}.chips{flex-wrap:wrap;gap:6px;margin:0 0 12px;display:flex}.chip{font:inherit;min-width:44px;min-height:40px;color:var(--ink);border:1px solid var(--rule);cursor:pointer;background:0 0;border-radius:999px;padding:6px 12px;font-size:.875rem}.chip-on{color:var(--accent-ink);background:var(--accent);border-color:var(--accent)}.chip:disabled{opacity:.4;cursor:default}.gauge{margin:12px 0 8px}.gauge-row{grid-template-columns:56px 1fr 52px;align-items:center;gap:10px;margin-bottom:10px;display:grid}.gauge-name{font-family:var(--sheet);font-size:.9375rem}.gauge-track{background:var(--paper);border:1px solid var(--rule);height:14px;position:relative}.gauge-fill{background:var(--ink-soft);height:100%}.gauge-below .gauge-fill{background:var(--wrong)}.gauge-edge .gauge-fill{background:var(--edge)}.gauge-safe .gauge-fill{background:var(--correct)}.gauge-mark{background:var(--ink);width:2px;position:absolute;top:-5px;bottom:-5px;left:50%}.gauge-value{text-align:right;font-variant-numeric:tabular-nums}.gauge-legend{text-align:center;color:var(--ink-soft);margin-left:66px;margin-right:62px;font-size:.75rem}.outcome{margin-bottom:4px;font-size:1.25rem;font-weight:600}.outcome-passed{color:var(--correct)}.outcome-failed{color:var(--wrong)}.teil>h2{font-family:var(--sheet);margin:24px 0 10px;font-size:1.125rem}.sheet{background:var(--paper);border:1px solid var(--rule);margin:0 calc(var(--gutter) * -1) 16px;padding:18px var(--gutter);font-family:var(--sheet);font-size:1.0625rem;line-height:1.55}@media (width>=640px){.sheet{margin-inline:0;padding:24px 28px}}.sheet-head{gap:10px;display:flex}.sheet-number{flex:none;font-weight:700}.sheet-statement{flex:1;min-width:0}.part{margin-top:14px}.part-stem{margin-bottom:4px}.part-row{grid-template-columns:minmax(0,auto) minmax(0,1fr) 58px;gap:8px;display:grid}.part-label{white-space:nowrap}.part-label:empty{display:none}.part-label:empty+.part-body{grid-column:1/3}.part-margin{border-left:1px solid var(--rule);font-family:var(--ui);color:var(--ink-soft);text-align:right;font-variant-numeric:tabular-nums;padding-left:8px;font-size:.8125rem}.part-work{font-family:var(--ui);margin-top:8px;font-size:1rem}.sheet-foot{border-top:1px solid var(--rule);margin-top:14px;padding-top:10px;font-size:.9375rem}.translation{color:var(--ink-soft);font-family:var(--ui);border-left:2px solid var(--rule);margin:6px 0 10px;padding-left:10px;font-size:.9375rem}.rich>:first-child{margin-top:0}.rich>:last-child{margin-bottom:0}.rich p{margin:0 0 8px}.rich-inline,.rich-inline p{display:inline}.rich table{border-collapse:collapse;margin:8px 0;font-size:.9375rem}.rich th,.rich td{border:1px solid var(--rule);text-align:left;padding:4px 10px}.katex-display{margin:8px 0;padding:4px 0;overflow:auto hidden}.katex .base{white-space:nowrap}.rich p{overflow:auto hidden}.figure{color:var(--ink);margin:12px 0;overflow-x:auto}.figure svg{max-width:100%;height:auto}.answer{margin:10px 0}.answer-label{font-size:.9375rem;display:block}.answer-hint{color:var(--ink-soft);font-size:.8125rem}.answer-row{gap:8px;margin-top:4px;display:flex}.answer-input,.field input{min-width:0;max-width:260px;font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius);flex:1;min-height:44px;padding:9px 12px;font-size:16px}.answer-self{border-left:3px solid var(--accent);font-family:var(--sheet);padding-left:12px}.answer-reference{color:var(--ink-soft);margin-top:4px;font-size:.9375rem}.verdict{margin-top:6px;font-size:.9375rem;font-weight:500}.verdict-correct{color:var(--correct)}.verdict-wrong{color:var(--wrong)}.verdict-invalid{color:var(--edge);font-weight:400}.steps{margin:12px 0;padding:0;list-style:none}.step{border-left:2px solid var(--accent);margin-bottom:14px;padding:2px 0 2px 12px}.step-head{color:var(--ink-soft);justify-content:space-between;gap:8px;font-size:.75rem;display:flex}.step-de{font-family:var(--sheet);margin:2px 0 4px;font-size:1.0625rem}.step-ru{color:var(--ink-soft);font-size:.9375rem}.step-answer,.step-book{border-left-color:var(--rule)}.step-book ul{margin:2px 0 0;padding-left:18px;font-size:.9375rem}.step-check{cursor:pointer;align-items:center;gap:8px;min-height:40px;margin-top:6px;font-size:.9375rem;display:flex}.step-check input{width:20px;height:20px;accent-color:var(--correct)}.selfgrade{border-top:1px dashed var(--rule);flex-wrap:wrap;align-items:center;gap:6px;margin-top:10px;padding-top:10px;display:flex}.clock{z-index:4;margin:0 calc(var(--gutter) * -1) 12px;padding:8px var(--gutter);background:var(--desk);border-bottom:1px solid var(--rule);align-items:center;gap:12px;display:flex;position:sticky;top:0}.clock-title{min-width:0;color:var(--ink-soft);flex:1;font-size:.9375rem}.clock-time{font-variant-numeric:tabular-nums;font-size:1.375rem;font-weight:600}.clock-late .clock-time{color:var(--edge)}.clock-over .clock-time{color:var(--wrong)}.login{max-width:360px;margin:12vh auto 0}.field{margin:16px 0;display:block}.field span{color:var(--ink-soft);margin-bottom:4px;font-size:.875rem;display:block}.field input{width:100%;max-width:none}.table{border-collapse:collapse;margin:0 0 8px;font-size:.9375rem}.table th,.table td{border-bottom:1px solid var(--rule);text-align:left;padding:6px 16px 6px 0;font-weight:400}.table thead th{color:var(--ink-soft);font-size:.8125rem}.update{left:var(--gutter);right:var(--gutter);bottom:calc(72px + env(safe-area-inset-bottom));z-index:6;background:var(--paper);border:1px solid var(--accent);border-radius:var(--radius);flex-wrap:wrap;align-items:center;gap:8px;max-width:520px;margin:0 auto;padding:10px 12px;display:flex;position:fixed}.update span{flex:1;min-width:160px}@media (prefers-reduced-motion:no-preference){.gauge-fill{transition:width .3s ease-out}}.chat-log{flex-direction:column;gap:8px;margin:12px 0;display:flex}.chat-msg{border-radius:var(--radius);border:1px solid var(--rule);max-width:92%;padding:8px 12px}.chat-user{background:var(--tint);align-self:flex-end}.chat-tutor{background:var(--paper);align-self:flex-start}.chat-form{align-items:flex-end;gap:8px;margin:12px 0;display:flex}.chat-input{resize:vertical;min-width:0;font:inherit;color:var(--ink);background:var(--paper);border:1px solid var(--rule);border-radius:var(--radius);flex:1;padding:8px 10px}.photo-result{margin-top:12px}.photo-steps{flex-direction:column;gap:8px;padding:0;list-style:none;display:flex}.photo-steps li{border-left:3px solid var(--rule);padding-left:10px}.photo-steps .photo-status{color:var(--ink-soft);text-transform:uppercase;letter-spacing:.04em;margin-right:8px;font-size:.85em}.photo-ok{border-left-color:var(--correct)}.photo-wrong{border-left-color:var(--wrong)}.photo-missing{border-left-color:var(--edge)}.lesson-section h2{margin-top:0}.example{border:1px dashed var(--rule);border-radius:var(--radius);margin:16px 0;padding:12px}.example-head{color:var(--ink-soft);margin:0 0 8px;font-size:.9em}.glossar{table-layout:fixed;border-collapse:collapse;width:100%;margin-top:8px}.glossar td{border-top:1px solid var(--rule);vertical-align:top;overflow-wrap:anywhere;padding:6px 8px}.glossar td:first-child{-webkit-hyphens:auto;hyphens:auto;width:50%;font-weight:600}.check-q{border-top:1px solid var(--rule);margin:14px 0;padding-top:10px}.term{text-underline-offset:3px;cursor:pointer;-webkit-text-decoration:underline dotted;text-decoration:underline dotted}.term-pop{background:var(--tint);border:1px solid var(--accent);border-radius:var(--radius);margin:8px 0 0;padding:8px 12px;position:sticky;bottom:8px}.widget{border:1px solid var(--rule);border-radius:var(--radius);background:var(--paper);margin:14px 0;padding:12px}.widget-board{width:100%;max-height:320px;color:var(--ink);display:block}.widget-slider{flex-direction:column;gap:4px;margin:10px 0;display:flex}.widget-slider input[type=range]{width:100%;accent-color:var(--accent);min-height:28px}.widget-readout{color:var(--ink-soft);font-variant-numeric:tabular-nums;margin:8px 0 0}.widget-shape{fill:var(--tint);stroke:var(--ink);stroke-width:.08px}.widget-accent{stroke:var(--accent);stroke-width:.14px}.widget-arc{fill:none;stroke:var(--edge);stroke-width:.08px;stroke-dasharray:.25 .18}.widget-axis{stroke:var(--rule);stroke-width:.06px}.widget-line{stroke:var(--ink);stroke-width:.12px}.widget-vector line{stroke:var(--ink);stroke-width:.12px;color:var(--ink)}.widget-vector-accent line{stroke:var(--accent);stroke-width:.14px;color:var(--accent)}.widget-vector-accent text{fill:var(--accent)}.widget-point{fill:var(--ink)}.widget-point-accent{fill:var(--accent)}.widget-text{fill:var(--ink);font-size:.7px}.widget-text-accent{fill:var(--accent)}.widget-text-small{fill:var(--ink-soft);font-size:3.4px}.widget-bar{fill:var(--accent);opacity:.85}.widget-area-strong{fill:var(--accent);fill-opacity:.28;stroke:none}.widget-table{border-collapse:collapse;font-variant-numeric:tabular-nums}.widget-table th,.widget-table td{border:1px solid var(--rule);text-align:right;padding:6px 10px}.widget-cell-accent{background:var(--tint);font-weight:600}.widget-cell-soft{background:var(--tint)}@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(/assets/KaTeX_Size3-Regular-gV2CO0n9.woff2)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{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.18.9"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.katex-newline{display:block}.katex .katex-base{white-space:nowrap;width:min-content;position:relative}.katex .katex-base,.katex .katex-strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .katex-vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .katex-thinbox{flex-direction:row;width:0;max-width:0;display:inline-flex}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline,.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-rule,.katex .katex-underline .underline-line,.katex .mfrac .frac-line{min-height:1px}.katex .mspace{display:inline-block}.katex .katex-smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.katex-inner,.katex .llap>.katex-inner,.katex .rlap>.katex-inner{position:absolute}.katex .clap>.katex-fix,.katex .llap>.katex-fix,.katex .rlap>.katex-fix{display:inline-block}.katex .llap>.katex-inner{right:0}.katex .clap>.katex-inner,.katex .rlap>.katex-inner{left:0}.katex .clap>.katex-inner>span{margin-left:-50%;margin-right:50%}.katex .katex-rule{border:0 solid;display:inline-block;position:relative}.katex .katex-hline,.katex .katex-overline .overline-line,.katex .katex-underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .katex-hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.katex-root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .katex-sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .katex-sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .katex-sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .katex-sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .katex-sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .katex-sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .katex-sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .katex-sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .katex-sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .katex-sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .katex-sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .katex-sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .katex-sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .katex-sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .katex-sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .katex-sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .katex-sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .katex-sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .katex-sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .katex-sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .katex-sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .katex-sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .katex-sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .katex-sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .katex-sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .katex-sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .katex-sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .katex-sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .katex-sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .katex-sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .katex-sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .katex-sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .katex-sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .katex-sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .katex-sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .katex-sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .katex-sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .katex-sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .katex-sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .katex-sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .katex-sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .katex-sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .katex-sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .katex-sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .katex-sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .katex-sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .katex-sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .katex-sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .katex-sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .katex-sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .katex-sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .katex-sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .katex-sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .katex-sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .katex-sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .katex-sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .katex-sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .katex-sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .katex-sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .katex-sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .katex-sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .katex-sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .katex-sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .katex-sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .katex-sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .katex-sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .katex-sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .katex-sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .katex-sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .katex-sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .katex-sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .katex-sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .katex-sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .katex-sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .katex-sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .katex-sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .katex-sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .katex-sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .katex-sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .katex-sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .katex-sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .katex-sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .katex-sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .katex-sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .katex-sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .katex-sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .katex-sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .katex-sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .katex-sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .katex-sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .katex-sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .katex-sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .katex-sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .katex-sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .katex-sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .katex-sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .katex-sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .katex-sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .katex-sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .katex-sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .katex-sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .katex-sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .katex-sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .katex-sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .katex-sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .katex-sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .katex-sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .katex-sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .katex-sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .katex-sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .katex-sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .katex-sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .katex-sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .katex-sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .katex-sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .katex-sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .katex-sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .katex-sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .katex-sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .katex-sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .katex-sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{width:.12em;display:inline-block}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .katex-accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .katex-accent .accent-body{position:relative}.katex .katex-accent .accent-body:not(.accent-full){width:0}.katex .katex-overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .katex-stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .katex-stretchy:after,.katex .katex-stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .katex-sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .reflectbox{display:inline-block;transform:scaleX(-1)}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.katex-tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.katex-tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}