@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-cyrillic-ext-700-normal-BuR0mlCG.woff2) format("woff2"),url(./nunito-cyrillic-ext-700-normal-DfoqN4Gs.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:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-cyrillic-700-normal-DP36NgGt.woff2) format("woff2"),url(./nunito-cyrillic-700-normal-DfHRUDv-.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-vietnamese-700-normal-Ch8EUCfz.woff2) format("woff2"),url(./nunito-vietnamese-700-normal-C9SQsXvj.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:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-latin-ext-700-normal-BWeMsAzO.woff2) format("woff2"),url(./nunito-latin-ext-700-normal-D4woHhbd.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:Nunito;font-style:normal;font-display:swap;font-weight:700;src:url(./nunito-latin-700-normal-Dort48En.woff2) format("woff2"),url(./nunito-latin-700-normal-OcDqTBcA.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:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-cyrillic-ext-800-normal-B-cvGohL.woff2) format("woff2"),url(./nunito-cyrillic-ext-800-normal-pjRatrRO.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:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-cyrillic-800-normal-D3igD7Kl.woff2) format("woff2"),url(./nunito-cyrillic-800-normal-DymMgApb.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-vietnamese-800-normal-D_CZYdm9.woff2) format("woff2"),url(./nunito-vietnamese-800-normal-Dz0hZPb5.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:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-latin-ext-800-normal-CtU8tJOV.woff2) format("woff2"),url(./nunito-latin-ext-800-normal-CDcxIxx8.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:Nunito;font-style:normal;font-display:swap;font-weight:800;src:url(./nunito-latin-800-normal-Dz8SOQK_.woff2) format("woff2"),url(./nunito-latin-800-normal-D-J0wlBY.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:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-cyrillic-ext-900-normal-BLeVovcl.woff2) format("woff2"),url(./nunito-cyrillic-ext-900-normal-DKFql_-q.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:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-cyrillic-900-normal-CWPcV0_V.woff2) format("woff2"),url(./nunito-cyrillic-900-normal-Dr1fjxoU.woff) format("woff");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-vietnamese-900-normal-D6LWQAy_.woff2) format("woff2"),url(./nunito-vietnamese-900-normal-WV2-fBew.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:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-latin-ext-900-normal-Dllsvgjo.woff2) format("woff2"),url(./nunito-latin-ext-900-normal-CTBZd6bf.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:Nunito;font-style:normal;font-display:swap;font-weight:900;src:url(./nunito-latin-900-normal-BVB1fGs6.woff2) format("woff2"),url(./nunito-latin-900-normal-CVn49sIn.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}:root{--brand: #7a5af8;--brand-d: #5a3ed6;--brand-l: #efeaff;--ok: #2bb673;--ok-d: #1f8f58;--ok-bg: #d9f6e6;--ok-ink: #17804c;--bad: #ef4b55;--bad-d: #c2323b;--bad-bg: #ffe1e3;--bad-ink: #c2323b;--sel: #2b9cf2;--sel-d: #1b7cc4;--sel-bg: #e2f2ff;--gold: #ffb627;--gold-d: #e09400;--flame: #ff8a1f;--heart: #ff4d6d;--xp: #f5b400;--ink: #2f2f38;--ink-2: #6b6b78;--muted: #a3a3ae;--line: #e6e6ec;--line-d: #cfcfd8;--surface: #ffffff;--surface-2: #f6f6f9;--bg: #ffffff;--shadow: rgba(20, 20, 40, .08);--font: "Nunito", "Hiragino Maru Gothic ProN", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif;--r: 16px;--safe-b: env(safe-area-inset-bottom, 0px);--safe-t: env(safe-area-inset-top, 0px);color-scheme:light}@media (prefers-color-scheme: dark){:root:not([data-theme=light]){--brand: #9b83ff;--brand-d: #6e52e0;--brand-l: #2c2645;--ok: #3fcf8a;--ok-d: #27a467;--ok-bg: #173627;--ok-ink: #6ee5a8;--bad: #ff6a72;--bad-d: #d24750;--bad-bg: #3d1d22;--bad-ink: #ff8c93;--sel: #49b0ff;--sel-d: #2a88d0;--sel-bg: #172e42;--ink: #ececf2;--ink-2: #b2b2c0;--muted: #7a7a89;--line: #34343f;--line-d: #4a4a57;--surface: #1d1d25;--surface-2: #26262f;--bg: #15151b;--shadow: rgba(0, 0, 0, .4);color-scheme:dark}}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{margin:0;height:100%}body{background:var(--bg);color:var(--ink);font-family:var(--font);font-weight:700;-webkit-font-smoothing:antialiased;overscroll-behavior:none;user-select:none;-webkit-user-select:none}input,textarea{user-select:text;-webkit-user-select:text}button{font:inherit;color:inherit;border:0;background:none;padding:0;cursor:pointer}h1,h2,h3{margin:0;font-weight:900}p{margin:0}.app{max-width:560px;margin:0 auto;height:100%;display:flex;flex-direction:column;position:relative;background:var(--bg)}.screen{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.pad{padding:16px}.stack{display:flex;flex-direction:column;gap:12px}.row{display:flex;align-items:center;gap:8px}.grow{flex:1;min-width:0}.muted{color:var(--ink-2)}.small{font-size:14px}.center{text-align:center}.btn{--c: var(--brand);--cd: var(--brand-d);--fg: #fff;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:50px;padding:0 20px;border-radius:var(--r);background:var(--c);color:var(--fg);font-weight:900;font-size:16px;letter-spacing:.04em;box-shadow:0 4px 0 var(--cd);transform:translateY(0);transition:transform .05s,box-shadow .05s,filter .15s;width:100%}.btn:active:not(:disabled){transform:translateY(4px);box-shadow:0 0 0 var(--cd)}.btn:disabled{--c: var(--line);--cd: var(--line);--fg: var(--muted);cursor:default}.btn.ok{--c: var(--ok);--cd: var(--ok-d)}.btn.bad{--c: var(--bad);--cd: var(--bad-d)}.btn.sel{--c: var(--sel);--cd: var(--sel-d)}.btn.gold{--c: var(--gold);--cd: var(--gold-d)}.btn.ghost{--c: var(--surface);--cd: var(--line);--fg: var(--sel);border:2px solid var(--line)}.btn.ghost.brand{--fg: var(--brand)}.btn.text{background:none;box-shadow:none;color:var(--sel);min-height:40px}.btn.sm{min-height:40px;font-size:14px;padding:0 14px;width:auto}.tile{display:flex;align-items:center;gap:12px;width:100%;padding:14px 16px;border:2px solid var(--line);border-radius:var(--r);background:var(--surface);box-shadow:0 3px 0 var(--line);text-align:left;font-size:17px;line-height:1.35;transition:transform .05s,box-shadow .05s,background .1s,border-color .1s}.tile:active:not(:disabled){transform:translateY(3px);box-shadow:0 0 0 var(--line)}.tile.selected{border-color:var(--sel);background:var(--sel-bg);box-shadow:0 3px 0 var(--sel);color:var(--sel-d)}.tile.correct{border-color:var(--ok);background:var(--ok-bg);box-shadow:0 3px 0 var(--ok);color:var(--ok-ink)}.tile.wrong{border-color:var(--bad);background:var(--bad-bg);box-shadow:0 3px 0 var(--bad);color:var(--bad-ink)}.tile:disabled{cursor:default}.tile.faded{opacity:.45}.keycap{flex:none;width:28px;height:28px;border:2px solid var(--line);border-radius:8px;display:grid;place-items:center;font-size:13px;color:var(--muted)}.tile.selected .keycap{border-color:var(--sel);color:var(--sel)}.card{border:2px solid var(--line);border-radius:var(--r);background:var(--surface);padding:16px}.topbar{position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:8px;padding:calc(10px + var(--safe-t)) 16px 10px;background:var(--bg);border-bottom:2px solid var(--line)}.stat{display:inline-flex;align-items:center;gap:5px;font-weight:900;font-size:16px;padding:6px 8px;border-radius:12px}.stat:active{background:var(--surface-2)}.stat.flame{color:var(--flame)}.stat.flame.off{color:var(--muted)}.stat.xp{color:var(--xp)}.stat.heart{color:var(--heart)}.course-chip{display:inline-flex;align-items:center;gap:6px;padding:4px 10px 4px 6px;border:2px solid var(--line);border-radius:12px;font-size:15px;max-width:44%}.course-chip .emoji{font-size:22px}.course-chip .name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.bottomnav{display:flex;border-top:2px solid var(--line);background:var(--bg);padding:6px 8px calc(6px + var(--safe-b))}.bottomnav button{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0;border-radius:12px;border:2px solid transparent;color:var(--muted);font-size:11px}.bottomnav button.active{color:var(--brand);background:var(--brand-l);border-color:color-mix(in srgb,var(--brand) 45%,transparent)}.unit-banner{position:sticky;top:0;z-index:3;margin:12px 16px 0;border-radius:var(--r);color:#fff;padding:14px 16px;display:flex;align-items:center;gap:12px;box-shadow:0 4px #0000002e}.unit-banner .label{font-size:13px;opacity:.85;letter-spacing:.06em}.unit-banner h2{font-size:19px;line-height:1.25}.unit-banner .guide{flex:none;display:grid;place-items:center;width:48px;height:48px;border-radius:14px;border:2px solid rgba(255,255,255,.35);box-shadow:0 3px #00000026}.path{position:relative;display:flex;flex-direction:column;align-items:center;gap:18px;padding:76px 0 30px}.node-wrap{position:relative;display:flex;justify-content:center}.node{--c: var(--brand);--cd: var(--brand-d);width:72px;height:66px;border-radius:50%;background:var(--c);box-shadow:0 7px 0 var(--cd);display:grid;place-items:center;color:#fff;transition:transform .06s,box-shadow .06s}.node:active{transform:translateY(6px);box-shadow:0 1px 0 var(--cd)}.node.locked{--c: var(--line);--cd: var(--line-d);color:var(--muted)}.node.done{--c: var(--gold);--cd: var(--gold-d)}.node.review{border-radius:22px}.node-ring{position:absolute;top:-9px;right:-9px;bottom:-2px;left:-9px;border-radius:50%;pointer-events:none}.start-bubble{position:absolute;bottom:calc(100% + 14px);left:50%;transform:translate(-50%);background:var(--surface);border:2px solid var(--line);color:var(--c, var(--brand));font-weight:900;padding:8px 14px;border-radius:12px;white-space:nowrap;animation:bob 1.6s ease-in-out infinite;font-size:15px;letter-spacing:.06em}.start-bubble:after{content:"";position:absolute;top:100%;left:50%;transform:translate(-50%);border:8px solid transparent;border-top-color:var(--line)}@keyframes bob{0%,to{transform:translate(-50%)}50%{transform:translate(-50%,-6px)}}.popover{position:absolute;top:calc(100% + 16px);left:50%;transform:translate(-50%);z-index:4;width:min(300px,calc(100vw - 32px));border-radius:var(--r);padding:16px;color:#fff;box-shadow:0 8px 24px var(--shadow);animation:pop .14s ease-out}.popover.locked{background:var(--surface-2);color:var(--ink-2);border:2px solid var(--line)}.popover:before{content:"";position:absolute;bottom:100%;left:50%;transform:translate(-50%);border:10px solid transparent;border-bottom-color:inherit}.popover h3{font-size:18px;margin-bottom:4px}.popover .btn{margin-top:14px;--c: #fff;--cd: rgba(0, 0, 0, .18)}@keyframes pop{0%{opacity:0;transform:translate(-50%,-6px) scale(.96)}}.path-mascot{position:absolute;pointer-events:none}.path-divider{display:flex;align-items:center;gap:12px;color:var(--muted);margin:6px 24px 0;font-size:15px}.path-divider:before,.path-divider:after{content:"";flex:1;height:2px;background:var(--line)}.lesson{position:fixed;top:0;right:0;bottom:0;left:0;z-index:20;background:var(--bg);display:flex;flex-direction:column;max-width:560px;margin:0 auto}.lesson-head{display:flex;align-items:center;gap:14px;padding:calc(14px + var(--safe-t)) 16px 8px}.progress{flex:1;height:16px;border-radius:99px;background:var(--line);overflow:hidden}.progress>div{height:100%;border-radius:99px;background:var(--ok);position:relative;transition:width .35s cubic-bezier(.3,1.4,.6,1);min-width:16px}.progress>div:after{content:"";position:absolute;top:4px;left:8px;right:8px;height:4px;border-radius:9px;background:#ffffff59}.combo{color:var(--flame);font-size:13px;font-weight:900;letter-spacing:.08em;padding:0 16px;min-height:18px;animation:pop2 .3s ease-out}@keyframes pop2{0%{transform:scale(.6);opacity:0}}.lesson-body{flex:1;overflow-y:auto;padding:12px 16px 24px;display:flex;flex-direction:column;gap:18px}.ex-title{font-size:22px;line-height:1.3}.ex-kicker{font-size:13px;color:var(--brand);letter-spacing:.06em;display:flex;align-items:center;gap:6px}.prompt{font-size:19px;line-height:1.5}.speech{display:flex;align-items:flex-end;gap:10px}.speech .bubble{position:relative;border:2px solid var(--line);border-radius:var(--r);padding:12px 14px;font-size:18px;line-height:1.45;flex:1}.speech .bubble:before{content:"";position:absolute;left:-10px;bottom:14px;border:8px solid transparent;border-right-color:var(--line);border-left:0}.choices{display:flex;flex-direction:column;gap:10px}.footer{border-top:2px solid var(--line);padding:16px 16px calc(16px + var(--safe-b));background:var(--bg);transition:background .15s}.footer.ok{background:var(--ok-bg);border-color:transparent}.footer.bad{background:var(--bad-bg);border-color:transparent}.feedback{display:flex;gap:12px;margin-bottom:14px;animation:slideup .18s ease-out}@keyframes slideup{0%{transform:translateY(16px);opacity:0}}.feedback .badge{flex:none;width:44px;height:44px;border-radius:50%;background:var(--surface);display:grid;place-items:center}.feedback h3{font-size:21px}.footer.ok .feedback{color:var(--ok-ink)}.footer.bad .feedback{color:var(--bad-ink)}.feedback .detail{margin-top:4px;font-size:15px;line-height:1.45;white-space:pre-line}.feedback .why{margin-top:6px;font-size:14px;line-height:1.5;opacity:.9;font-weight:700}.feedback .src{margin-top:4px;font-size:12px;opacity:.7}.flag{flex:none;align-self:flex-start;opacity:.7;padding:4px}.flag.on{opacity:1}.answer-lines{min-height:120px;display:flex;flex-wrap:wrap;align-content:flex-start;gap:8px;padding:8px 0;background-image:repeating-linear-gradient(to bottom,transparent 0 55px,var(--line) 55px 57px)}.answer-lines.vertical{flex-direction:column;flex-wrap:nowrap;background:none;border:2px dashed var(--line);border-radius:var(--r);padding:10px;min-height:80px}.bank{display:flex;flex-wrap:wrap;justify-content:center;gap:8px}.bank.vertical{flex-direction:column}.chip{padding:10px 14px;border:2px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:0 3px 0 var(--line);font-size:17px;line-height:1.3;text-align:left}.chip:active{transform:translateY(2px);box-shadow:0 1px 0 var(--line)}.chip.ghost{background:var(--line);color:transparent;box-shadow:none;border-color:var(--line)}.chip.correct{border-color:var(--ok);color:var(--ok-ink);box-shadow:0 3px 0 var(--ok)}.chip.wrong{border-color:var(--bad);color:var(--bad-ink);box-shadow:0 3px 0 var(--bad)}.match-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.match-grid .tile{justify-content:center;text-align:center;min-height:60px;font-size:15px;padding:10px}.tile.matched{opacity:.35;box-shadow:none;border-color:var(--line)}.shake{animation:shake .3s}@keyframes shake{25%{transform:translate(-6px)}75%{transform:translate(6px)}}.blank-input{font:inherit;font-size:18px;border:0;border-bottom:3px solid var(--line-d);background:transparent;color:var(--sel);min-width:90px;width:8em;padding:2px 4px;outline:none;text-align:center}.blank-input:focus{border-color:var(--sel)}.blank-slot{display:inline-block;min-width:80px;border-bottom:3px solid var(--line-d);color:var(--sel);text-align:center;padding:0 6px}.field{width:100%;font:inherit;font-size:17px;padding:14px;border:2px solid var(--line);border-radius:var(--r);background:var(--surface-2);color:var(--ink);outline:none}.field:focus{border-color:var(--sel)}textarea.field{min-height:140px;font-size:13px;font-family:ui-monospace,Menlo,monospace;resize:vertical}.speaker{width:120px;height:120px;border-radius:28px;background:var(--sel);box-shadow:0 6px 0 var(--sel-d);color:#fff;display:grid;place-items:center}.speaker:active{transform:translateY(5px);box-shadow:0 1px 0 var(--sel-d)}.speaker.slow{width:72px;height:72px;border-radius:20px}.flash{perspective:1000px;min-height:220px}.flash-inner{position:relative;min-height:220px;transition:transform .4s;transform-style:preserve-3d}.flash.flipped .flash-inner{transform:rotateY(180deg)}.flash-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:grid;place-items:center;text-align:center;padding:20px;font-size:22px;line-height:1.4;border:2px solid var(--line);border-radius:20px;box-shadow:0 4px 0 var(--line);background:var(--surface)}.flash-face.back{transform:rotateY(180deg);background:var(--brand-l);border-color:var(--brand);box-shadow:0 4px 0 var(--brand)}.teach{border:2px solid var(--line);border-radius:20px;padding:20px;font-size:17px;line-height:1.65}.teach h2{font-size:22px;margin-bottom:10px}.result{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;padding:24px 16px;text-align:center}.result h1{font-size:30px;color:var(--gold-d)}.stat-boxes{display:flex;gap:10px;width:100%}.stat-box{flex:1;border-radius:14px;border:2px solid var(--c);background:var(--c);overflow:hidden}.stat-box .lbl{color:#fff;font-size:12px;padding:4px 0;letter-spacing:.06em}.stat-box .val{background:var(--bg);border-radius:11px;padding:12px 4px;font-size:20px;font-weight:900;color:var(--c);display:flex;align-items:center;justify-content:center;gap:4px}.big-flame{font-size:96px;font-weight:900;color:var(--flame);line-height:1}.week{display:flex;gap:8px;justify-content:center;padding:14px;border:2px solid var(--line);border-radius:var(--r);width:100%}.week .d{display:flex;flex-direction:column;align-items:center;gap:6px;font-size:12px;color:var(--muted);flex:1}.week .dot{width:30px;height:30px;border-radius:50%;background:var(--line);display:grid;place-items:center;color:#fff}.week .dot.on{background:var(--flame)}.week .d.today{color:var(--flame)}.scrim{position:fixed;top:0;right:0;bottom:0;left:0;z-index:40;background:#0a0a1473;display:flex;align-items:flex-end;justify-content:center;animation:fade .15s}@keyframes fade{0%{opacity:0}}.sheet{width:100%;max-width:560px;background:var(--bg);border-radius:24px 24px 0 0;padding:20px 16px calc(20px + var(--safe-b));animation:slideup .2s ease-out;max-height:85vh;overflow-y:auto}.sheet h2{font-size:22px;margin-bottom:6px}.toast{position:fixed;left:50%;bottom:calc(90px + var(--safe-b));transform:translate(-50%);z-index:60;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:12px;font-size:14px;max-width:calc(100vw - 32px);animation:slideup .2s ease-out}.section-title{font-size:22px;margin:8px 0 4px}.list-item{display:flex;align-items:center;gap:14px;padding:14px;border:2px solid var(--line);border-radius:var(--r);background:var(--surface);width:100%;text-align:left}.list-item.active{border-color:var(--brand);background:var(--brand-l)}.list-item .icon{flex:none;width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:28px;background:var(--surface-2)}.list-item h3{font-size:17px}.bar{height:12px;border-radius:9px;background:var(--line);overflow:hidden}.bar>div{height:100%;background:var(--gold);border-radius:9px}.pill{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:99px;font-size:12px;background:var(--surface-2);color:var(--ink-2)}.pill.ok{background:var(--ok-bg);color:var(--ok-ink)}.pill.warn{background:#fff2d6;color:#9a6400}.seg{display:flex;gap:8px;flex-wrap:wrap}.seg button{padding:8px 14px;border-radius:12px;border:2px solid var(--line);font-size:14px}.seg button.on{border-color:var(--sel);background:var(--sel-bg);color:var(--sel-d)}.switch{width:52px;height:30px;border-radius:99px;background:var(--line);position:relative;flex:none;transition:background .15s}.switch:after{content:"";position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0003;transition:left .15s}.switch.on{background:var(--ok)}.switch.on:after{left:25px}.step-num{flex:none;width:30px;height:30px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-size:15px}.chart{display:flex;align-items:flex-end;gap:8px;height:120px;padding-top:10px}.chart .col{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;height:100%;justify-content:flex-end;font-size:11px;color:var(--muted)}.chart .col>div{width:100%;border-radius:8px 8px 4px 4px;background:var(--xp);min-height:4px}.md h3{font-size:18px;margin:18px 0 6px;color:var(--brand)}.md ul{margin:4px 0;padding-left:1.2em}.md li{margin:4px 0;line-height:1.55}.md p{margin:8px 0;line-height:1.6}.katex{font-size:1.05em}.exam-count{font-size:15px;color:var(--ink-2);white-space:nowrap}.exam-timer{display:flex;align-items:center;gap:4px;padding:0 16px;min-height:18px;font-size:13px;color:var(--ink-2)}.exam-review{gap:8px}.exam-review .q{font-size:16px;line-height:1.5}.exam-review .ans{border-radius:12px;padding:8px 12px;line-height:1.45;white-space:pre-line}.exam-review .ans.bad{background:var(--bad-bg);color:var(--bad-ink)}.exam-review .ans.ok{background:var(--ok-bg);color:var(--ok-ink)}.exam-review .lbl{display:block;font-size:12px;opacity:.8}.exam-band{display:flex;align-items:center;gap:8px;margin:0 16px 4px;padding:8px 12px;border-radius:12px;background:var(--brand-l);color:var(--brand);font-size:14px}.objective{display:flex;flex-direction:column;gap:6px;width:100%;text-align:left;padding:12px 0;border-bottom:2px solid var(--line)}.objective:last-child{border-bottom:0}.objective:disabled{cursor:default}.btn.ok:disabled,.btn.bad:disabled,.btn.sel:disabled,.btn.gold:disabled{--c: var(--line);--cd: var(--line);--fg: var(--muted)}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(./KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(./KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(./KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(./KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(./KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(./KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(./KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(./KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(./KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(./KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(./KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(./KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(./KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(./KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(./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(./KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(./KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(./KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(./KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(./KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(./KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(./KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(./KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(./KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(./KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(./KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(./KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(./KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(./KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(./KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(./KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(./KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(./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(./KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(./KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(./KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(./KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(./KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(./KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(./KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(./KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(./KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(./KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(./KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(./KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(./KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(./KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(./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(./KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(./KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(./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(./KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(./KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(./KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(./KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(./KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(./KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(./KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(./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}
