:root{color-scheme:light;--bg: #ede8dd;--panel: #f8f4ec;--panel-strong: #ede7d8;--sidebar-bg: #e6e0d3;--text: #1c2333;--muted: #6b6f7a;--line: #d5cfc3;--blue: #1e4a6e;--blue-soft: #e4ecf3;--blue-line: #a8bfd4;--green: #2a6b52;--green-soft: #e0efe7;--amber: #a05f1f;--amber-soft: #f2e5d0;--red: #a33838;--red-soft: #f0dcd8;--ink: #0f2338;--field: #fdfbf6;--track: #d8d3c7;--canvas: #f5f1e6;--shape-muted: rgba(69, 82, 95, .12);--topbar-bg: rgba(248, 244, 236, .92);--shadow: 0 18px 45px rgba(28, 35, 51, .08), 0 4px 12px rgba(28, 35, 51, .04);--shadow-hover: 0 24px 55px rgba(28, 35, 51, .12), 0 8px 20px rgba(28, 35, 51, .06);--font-display: "Crimson Pro", Georgia, "Times New Roman", serif;--font-body: "Outfit", ui-sans-serif, system-ui, -apple-system, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--transition-fast: .16s cubic-bezier(.4, 0, .2, 1);--transition-base: .26s cubic-bezier(.4, 0, .2, 1);--transition-slow: .4s cubic-bezier(.4, 0, .2, 1);font-family:var(--font-body)}:root[data-theme=dark]{color-scheme:dark;--bg: #060910;--panel: #0f1522;--panel-strong: #172035;--sidebar-bg: #0b1220;--text: #e2e8f0;--muted: #7f8da3;--line: #1e293b;--blue: #6ecfff;--blue-soft: #0f2238;--blue-line: #1e4a70;--green: #4dd8a8;--green-soft: #0f2e22;--amber: #f0b34e;--amber-soft: #2a2010;--red: #f08080;--red-soft: #2d1818;--ink: #3a7ab8;--field: #0b1220;--track: #1e293b;--canvas: #0a111c;--shape-muted: rgba(168, 184, 214, .1);--topbar-bg: rgba(15, 21, 34, .92);--shadow: 0 18px 45px rgba(0, 0, 0, .45), 0 4px 12px rgba(0, 0, 0, .25);--shadow-hover: 0 24px 55px rgba(0, 0, 0, .55), 0 8px 20px rgba(0, 0, 0, .3)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color var(--transition-slow),color var(--transition-slow)}[data-theme=dark] body{background:radial-gradient(ellipse 80% 50% at 50% -10%,rgba(30,74,110,.12),transparent),var(--bg)}:not([data-theme=dark]) body{background:radial-gradient(ellipse 70% 40% at 50% -5%,rgba(160,140,100,.06),transparent),var(--bg)}body:before{content:"";position:fixed;inset:0;pointer-events:none;z-index:9999;opacity:.45;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.07'/%3E%3C/svg%3E");background-size:180px 180px}::selection{background:var(--blue-soft);color:var(--blue)}::-webkit-scrollbar{width:7px;height:7px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px}::-webkit-scrollbar-thumb:hover{background:var(--muted)}button,input,select{font:inherit}button{cursor:pointer}.app-shell{display:grid;grid-template-columns:320px minmax(0,1fr);min-height:100vh;transition:grid-template-columns var(--transition-base)}.app-shell.sidebar-collapsed{grid-template-columns:76px minmax(0,1fr)}.sidebar{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:12px;padding:22px;border-right:1px solid var(--line);background:var(--sidebar-bg);overflow:hidden;transition:padding var(--transition-base),background var(--transition-base),border-color var(--transition-base)}.sidebar-collapsed .sidebar{padding:16px 12px}.brand{display:flex;align-items:center;gap:12px;min-width:0}.sidebar-collapsed .brand{justify-content:center}.brand-mark{width:44px;height:44px;display:grid;place-items:center;border:1px solid #d0d7de;border-radius:var(--radius-sm);background:#fff;color:#0d1117;flex:0 0 auto;transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.brand-mark svg{transform:rotate(90deg)}.brand:hover .brand-mark{transform:scale(1.05)}.brand p,.brand h1{margin:0}.brand p{color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;font-family:var(--font-body)}.brand h1{max-width:178px;overflow:hidden;font-size:17px;letter-spacing:-.01em;line-height:1.2;text-overflow:ellipsis;white-space:nowrap;font-family:var(--font-display);font-weight:600}.sidebar-toggle{width:36px;height:36px;display:inline-grid;place-items:center;margin-left:auto;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--panel);color:var(--muted);transition:all var(--transition-fast)}.sidebar-toggle:hover{color:var(--blue);border-color:var(--blue-line);background:var(--blue-soft);transform:scale(1.06)}.sidebar-collapsed .sidebar-toggle{position:absolute;top:64px;left:20px;margin-left:0}.sidebar-collapsed .sidebar-full{display:none!important}.course-switcher{position:relative;z-index:5}.course-dropdown-trigger{display:grid;grid-template-columns:18px minmax(0,1fr) 18px 16px;align-items:center;gap:8px;width:100%;min-height:42px;padding:9px 10px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel);color:var(--blue);text-align:left;transition:all var(--transition-fast)}.course-dropdown-trigger span,.course-dropdown-option span{min-width:0;overflow:hidden;color:var(--text);font-size:15px;font-weight:740;text-overflow:ellipsis;white-space:nowrap}.course-dropdown-trigger.open,.course-dropdown-trigger:hover{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue);box-shadow:var(--shadow)}.dropdown-chevron{grid-column:4;color:var(--muted);transition:transform var(--transition-fast)}.course-dropdown-trigger.open .dropdown-chevron{transform:rotate(180deg)}.paid-icon{grid-column:3;color:var(--green)}.course-dropdown-menu{position:absolute;top:calc(100% + 6px);right:0;left:0;display:grid;gap:5px;max-height:min(430px,calc(100vh - 180px));overflow:auto;padding:6px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel);box-shadow:var(--shadow-hover);animation:dropdownIn .18s cubic-bezier(.4,0,.2,1)}@keyframes dropdownIn{0%{opacity:0;transform:translateY(-6px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.course-dropdown-option{display:grid;grid-template-columns:18px minmax(0,1fr) 18px;align-items:center;gap:8px;min-height:38px;padding:8px 9px;border:1px solid transparent;border-radius:var(--radius-sm);background:transparent;color:var(--muted);text-align:left;transition:all var(--transition-fast)}.course-dropdown-option.active{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue)}.course-dropdown-option:hover{border-color:var(--line);background:var(--field);transform:translate(2px)}.course-dropdown-option.locked,.chapter-link.locked{opacity:.48;filter:grayscale(.85)}.course-dropdown-option.locked:hover,.chapter-link.locked:hover{opacity:.72}.course-select-shell{display:flex;align-items:center;gap:8px;min-width:0;min-height:42px;padding:0 10px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel);color:var(--muted);transition:all var(--transition-fast)}.course-select-shell:focus-within{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.course-select-shell select{width:100%;min-width:0;height:40px;padding:0;border:0;appearance:none;background:transparent;color:var(--text);font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-select-shell select:focus{outline:none}.course-select-shell svg{flex:0 0 auto}.course-select-shell svg:last-child{pointer-events:none}.chapter-list{display:flex;flex:1;flex-direction:column;gap:5px;min-height:0;overflow:auto;padding-right:4px}.chapter-link{display:grid;grid-template-columns:18px 28px minmax(0,1fr) 18px;align-items:center;gap:8px;width:100%;padding:10px 9px;border:1px solid transparent;border-radius:var(--radius-md);background:transparent;color:var(--muted);text-align:left;transition:all var(--transition-fast);position:relative}.chapter-link:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:0;border-radius:0 3px 3px 0;background:var(--blue);transition:height var(--transition-fast)}.chapter-link.active:before{height:60%}.sidebar-collapsed .chapter-list{margin-top:48px;padding-right:0}.sidebar-collapsed .chapter-link{display:flex;justify-content:center;width:52px;height:48px;padding:0}.sidebar-collapsed .chapter-link .done-icon{position:absolute;transform:translate(13px,-13px)}.chapter-link b{min-width:0;overflow:hidden;color:var(--text);font-size:13px;font-weight:740;text-overflow:ellipsis;white-space:nowrap}.chapter-link span{font-size:12px;color:var(--muted)}.chapter-link.active{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue)}.chapter-link:hover:not(.active){background:var(--field);border-color:var(--line);transform:translate(1px)}.lock-icon{color:var(--amber)}.done-icon{color:var(--green)}.theme-button,.lesson-controls button,.primary-action,.icon-action{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel);color:var(--text);transition:all var(--transition-fast)}.theme-button{width:100%;flex:0 0 auto}.theme-button:hover{background:var(--blue-soft);border-color:var(--blue-line);color:var(--blue)}.sidebar-footer{display:grid;grid-template-columns:minmax(0,1fr) 38px 38px;align-items:center;gap:8px;margin-top:auto;padding:8px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--panel)}.footer-progress{min-width:0;overflow:hidden;color:var(--muted);font-size:12px;font-weight:750;text-overflow:ellipsis;white-space:nowrap}.icon-action{width:38px;min-height:38px;padding:0;color:var(--muted)}.icon-action:hover{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue);transform:scale(1.08)}.mobile-theme{min-height:40px}.access-shell{position:fixed;inset:0;z-index:50;min-height:100vh;display:grid;place-items:center;padding:24px;background:#0408128c;-webkit-backdrop-filter:blur(8px) saturate(1.2);backdrop-filter:blur(8px) saturate(1.2)}.access-panel{width:min(100%,520px);display:grid;gap:18px;padding:24px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel);box-shadow:var(--shadow-hover);animation:panelIn .3s cubic-bezier(.4,0,.2,1)}@keyframes panelIn{0%{opacity:0;transform:scale(.97) translateY(10px)}to{opacity:1;transform:scale(1) translateY(0)}}.access-brand{display:grid;grid-template-columns:44px minmax(0,1fr);gap:12px;align-items:center}.access-title{min-width:0}.access-brand p,.access-brand h1{margin:0}.access-brand p{color:var(--muted);font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}.access-brand h1{font-size:22px;line-height:1.2;font-family:var(--font-display);font-weight:600}.access-actions{grid-column:1 / -1;display:grid;grid-template-columns:minmax(0,1fr) max-content;align-items:center;gap:8px}.access-utility-actions{display:inline-flex;align-items:center;flex-shrink:0;gap:6px;margin-left:auto}.access-status,.account-row,.account-strip{display:flex;align-items:center;gap:8px;min-width:0;color:var(--muted);line-height:1.55}.account-row span,.account-strip span{min-width:0;overflow-wrap:anywhere}.access-status{padding:14px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);transition:all var(--transition-fast)}.access-status.warning{border-color:var(--amber);background:var(--amber-soft);color:var(--amber)}.spin{animation:spin .9s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-info-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));align-items:center;min-width:0;gap:4px;padding:4px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--track)}.auth-info-tabs button{min-height:30px;min-width:0;padding:0 8px;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--muted);font-size:12px;font-weight:800;text-align:center;white-space:nowrap;transition:all var(--transition-fast)}.auth-info-tabs button:hover{color:var(--blue);background:var(--blue-soft)}.auth-info-tabs button.active{color:var(--blue);background:var(--panel);box-shadow:var(--shadow)}.auth-info-card-layer{position:fixed;inset:0;z-index:3;display:grid;place-items:center;padding:24px;background:#04081238}.auth-info-card{width:min(100%,560px);max-height:min(76vh,560px);display:grid;gap:16px;overflow:auto;padding:20px;border:1px solid var(--blue-line);border-radius:var(--radius-md);background:var(--panel);box-shadow:var(--shadow-hover);animation:panelIn .22s cubic-bezier(.4,0,.2,1)}.auth-info-card-header{display:grid;grid-template-columns:minmax(0,1fr) 38px;align-items:start;gap:12px}.auth-info-card-header span{display:block;margin-bottom:4px;color:var(--blue);font-size:12px;font-weight:850}.auth-info-card h2{margin:0;color:var(--text);font-family:var(--font-display);font-size:22px;line-height:1.2}.auth-info-card-close{background:var(--field)}.auth-info-card-body{display:grid;gap:10px}.auth-info-card-body p{margin:0;color:var(--muted);line-height:1.75}.auth-form,.billing-panel{display:grid;gap:14px;min-width:0}.billing-panel{max-height:min(72vh,620px);overflow-y:auto;padding-right:4px;overscroll-behavior:contain}.prompt-copy{margin:0;color:var(--muted);line-height:1.65}.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:4px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--track)}.auth-tabs button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--muted);font-weight:750;transition:all var(--transition-fast)}.auth-tabs button.active{background:var(--panel);color:var(--blue);box-shadow:var(--shadow)}.auth-form label{display:grid;gap:7px;color:var(--muted);font-size:13px;font-weight:740}.auth-form input{min-height:42px;padding:0 12px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);color:var(--text);transition:all var(--transition-fast)}.auth-form input:hover{border-color:var(--blue-line)}.auth-form input:focus{outline:none;border-color:var(--blue-line);box-shadow:0 0 0 3px var(--blue-soft)}.billing-panel h2,.billing-panel p{margin:0;min-width:0;overflow-wrap:anywhere}.billing-panel h2{font-size:24px;font-family:var(--font-display);font-weight:600}.billing-panel p{color:var(--muted);line-height:1.7}.plan-options{display:grid;gap:10px}.plan-card{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:0;width:100%;padding:16px;border:1px solid var(--blue-line);border-radius:var(--radius-md);background:var(--blue-soft);color:var(--blue);text-align:left;transition:all var(--transition-fast)}.plan-option{cursor:pointer}.plan-option.selected{border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.plan-option:focus-visible{outline:none;border-color:var(--blue);box-shadow:0 0 0 3px var(--blue-soft)}.plan-card:hover{box-shadow:var(--shadow);transform:translateY(-1px)}.plan-copy{display:grid;gap:4px;min-width:0}.plan-card strong{color:var(--text);line-height:1.35;overflow-wrap:anywhere}.plan-card small{color:var(--muted);font-size:12px;font-weight:650;line-height:1.45;overflow-wrap:anywhere}.plan-price{flex:0 0 auto;font-size:28px;font-weight:850}.plan-selected-icon{flex:0 0 auto}.order-box{display:grid;gap:10px;min-width:0;padding:14px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);color:var(--muted);font-size:13px;line-height:1.55}.order-box span,.order-box a{min-width:0;overflow-wrap:anywhere}.order-box a{justify-self:start}.order-warning{color:var(--danger);font-weight:720}.secondary-action{min-height:40px;border:1px solid var(--blue);border-radius:var(--radius-md);background:var(--blue-soft);color:var(--blue);font-weight:760;transition:all var(--transition-fast)}.secondary-action:hover{background:var(--blue);color:#fff;transform:translateY(-1px)}.form-message{margin:0;color:var(--green);font-weight:720}.form-message.error{color:var(--red)}.account-strip{justify-content:space-between;flex:1 1 auto;min-width:0;min-height:40px;padding:0 10px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);transition:all var(--transition-fast)}.account-strip:hover{border-color:var(--blue-line)}.account-strip.account-login{width:100%;cursor:pointer;font-weight:760}.account-login span{font-size:13px}.account-strip span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-strip button{width:32px;height:32px;display:grid;place-items:center;border:0;border-radius:var(--radius-sm);background:var(--panel);color:var(--muted);transition:all var(--transition-fast)}.account-strip button:hover{background:var(--blue-soft);color:var(--blue);transform:scale(1.1)}.account-tools{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;min-width:0}.main{min-width:0;padding:28px}.mobile-topbar{display:none}.lesson{max-width:1280px;margin:0 auto}.lesson-header{display:flex;align-items:flex-start;justify-content:space-between;gap:24px;padding:26px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel);box-shadow:var(--shadow);transition:box-shadow var(--transition-base);position:relative;overflow:hidden}.lesson-header:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--blue);opacity:.6}.lesson-header:hover{box-shadow:var(--shadow-hover)}.lesson-header>div{min-width:0}.lesson-header-actions{display:flex;flex:0 0 auto;flex-direction:column;align-items:flex-end;gap:10px}.eyebrow{margin:0 0 8px;color:var(--blue);font-size:12px;font-weight:750;line-height:1.45;text-wrap:balance;letter-spacing:.04em;text-transform:uppercase}.lesson-header h2{margin:0;max-width:920px;font-size:clamp(28px,3.2vw,42px);line-height:1.1;letter-spacing:-.02em;overflow-wrap:normal;text-wrap:balance;word-break:auto-phrase;font-family:var(--font-display);font-weight:600}.lesson-header p:last-child{max-width:920px;margin:16px 0 0;color:var(--muted);font-size:17px;line-height:1.7}.lesson-summary{max-width:920px;margin-top:16px;color:var(--muted);font-size:17px;line-height:1.7}.lesson-summary p,.markdown-text p{margin:0}.demo-badge{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;padding:10px 14px;border:1px solid var(--blue-line);border-radius:999px;background:var(--blue-soft);color:var(--blue);font-weight:750;font-size:13px;transition:all var(--transition-fast)}.math-program-trigger{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;padding:10px 14px;border:1px solid var(--blue-line);border-radius:999px;background:var(--blue-soft);color:var(--blue);font-weight:750;font-size:13px;box-shadow:0 0 #1e4a6e00;animation:mathProgramBlink 1.35s ease-in-out infinite;transition:all var(--transition-fast)}.demo-badge:hover{box-shadow:0 0 16px var(--glow-blue);transform:translateY(-1px)}.math-program-trigger:hover{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue);transform:translateY(-1px)}@keyframes mathProgramBlink{0%,to{filter:brightness(1);box-shadow:0 0 #1e4a6e00}50%{filter:brightness(1.12);box-shadow:0 0 0 4px #1e4a6e29,0 0 20px #1e4a6e61}}@media(prefers-reduced-motion:reduce){.math-program-trigger{animation:none}}.lesson-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(360px,460px);gap:22px;align-items:start;margin-top:22px}.content-column,.demo-column{display:flex;flex-direction:column;gap:18px}.demo-column{position:sticky;top:24px}.concept-block,.term-guide,.symbol-guide-card,.advanced,.quiz,.demo-frame{border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--panel);box-shadow:0 8px 24px #16202a0a,inset 0 1px #fff6;transition:box-shadow var(--transition-base),transform var(--transition-base)}[data-theme=dark] .concept-block,[data-theme=dark] .term-guide,[data-theme=dark] .symbol-guide-card,[data-theme=dark] .advanced,[data-theme=dark] .quiz,[data-theme=dark] .demo-frame{box-shadow:0 8px 24px #00000040,inset 0 1px #ffffff08}.concept-block:hover,.term-guide:hover,.symbol-guide-card:hover,.quiz:hover,.demo-frame:hover{box-shadow:var(--shadow)}.concept-block{padding:22px}.concept-block h3,.quiz h3,.demo-title h3{margin:0;font-size:20px;letter-spacing:-.01em;font-family:var(--font-display);font-weight:600}.concept-block p{margin:12px 0 0;color:var(--text);font-size:16px;line-height:1.8}.formula-panel{margin-top:16px;padding:18px;border:1px solid var(--blue-line);border-radius:var(--radius-md);background:var(--canvas);overflow-x:auto;transition:all var(--transition-base)}.formula-panel:hover{border-color:var(--blue);box-shadow:0 0 20px var(--glow-blue)}.formula-expression{min-width:0}.formula-panel .katex-display{margin:.55rem 0;overflow-x:auto;overflow-y:hidden;padding:.15rem .05rem .35rem}.formula-panel .katex{color:var(--text);font-size:1.24em;line-height:1.55}.symbol-guide{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}.symbol-guide h4{margin:0 0 10px;color:var(--muted);font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}.symbol-guide dl{display:grid;gap:8px;margin:0}.symbol-guide div{display:grid;grid-template-columns:minmax(90px,.38fr) minmax(0,1fr);gap:12px;align-items:start}.symbol-guide dt,.symbol-guide dd{margin:0}.symbol-guide dt{min-width:0;color:var(--blue);font-weight:800}.symbol-guide dt .katex{font-size:1.08em}.symbol-guide dd{color:var(--muted);line-height:1.55}.symbol-guide-card{padding:20px}.symbol-guide-card dl{display:grid;gap:10px 14px;margin:16px 0 0}.symbol-guide-card div{display:grid;grid-template-columns:minmax(120px,.36fr) minmax(0,1fr);gap:14px;align-items:start;padding:9px 0;border-top:1px solid var(--line)}.symbol-guide-card div:first-child{border-top:0;padding-top:0}.symbol-guide-card dt,.symbol-guide-card dd{margin:0}.symbol-guide-card dt{min-width:0;color:var(--blue);font-weight:850}.symbol-guide-card dd{color:var(--muted);line-height:1.55}.section-notes{display:grid;gap:10px;margin-top:16px}.section-note{display:grid;grid-template-columns:18px minmax(0,1fr);gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--track);color:var(--text)}.section-note.warning{border-color:#d9770647;background:var(--amber-soft)}.section-note svg{margin-top:2px;color:var(--amber)}.section-note strong{display:block;margin-bottom:4px;font-size:13px}.section-note .note-body p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}.term-guide{padding:20px}.term-guide dl{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:8px 14px;margin:16px 0 0}.term-guide div{min-width:0;padding:8px 0;border-top:1px solid var(--line);transition:all var(--transition-fast)}.term-guide div:hover{padding-left:6px}.term-guide div:first-child{border-top:0;padding-top:0}.term-guide dt,.term-guide dd{margin:0}.term-guide dt{display:inline;color:var(--blue);font-weight:850;white-space:nowrap}.term-guide dd{display:inline;color:var(--muted);line-height:1.55}.term-guide dd:before{content:"：";color:var(--muted)}.term-meaning{display:inline}.term-meaning p{display:inline;margin:0}.markdown-text code{padding:2px 6px;border-radius:4px;background:var(--track);color:var(--text);font-family:var(--font-mono);font-size:.9em}.analogy{display:flex;gap:10px;margin-top:16px;padding:14px;border-left:4px solid var(--green);border-radius:0 var(--radius-sm) var(--radius-sm) 0;background:var(--green-soft);color:var(--text);line-height:1.65}.analogy-text{min-width:0}.analogy svg{flex:0 0 auto;margin-top:4px;color:var(--green)}.advanced{overflow:hidden}.advanced>button{display:flex;width:100%;align-items:center;justify-content:space-between;padding:16px 18px;border:0;background:var(--amber-soft);color:var(--amber);font-weight:760;transition:all var(--transition-fast);cursor:pointer}.advanced>button:hover{filter:brightness(1.05)}.advanced .rotated{transform:rotate(180deg)}.advanced ul{margin:0;padding:16px 24px 20px 38px;color:var(--text);line-height:1.75}.inline-note p{display:inline}.quiz{padding:20px;text-align:left}.section-title{display:flex;align-items:center;gap:8px;margin-bottom:16px}.section-title span{margin-left:auto;padding:4px 10px;border-radius:999px;background:var(--green-soft);color:var(--green);font-size:13px;font-weight:750}.question{padding:16px 0;border-top:1px solid var(--line);text-align:left}.question p{margin:0 0 12px;font-weight:680}.question-text{margin-bottom:12px;font-weight:680;text-align:left}.options{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-start;text-align:left}.options button{display:flex;align-items:center;justify-content:flex-start;flex:1 1 220px;min-height:38px;padding:8px 12px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);color:var(--text);line-height:1.35;text-align:left;transition:all var(--transition-fast)}.options button:hover:not(:disabled){border-color:var(--blue-line);background:var(--blue-soft);transform:translate(2px)}.options button.selected{border-color:var(--blue);background:var(--blue-soft);box-shadow:0 0 0 1px var(--blue-line)}.options button.correct{border-color:var(--green);background:var(--green-soft);color:var(--green);box-shadow:0 0 0 1px var(--green-soft)}.options button.wrong{border-color:var(--red);background:var(--red-soft);color:var(--red);box-shadow:0 0 0 1px var(--red-soft)}.explanation{margin-top:10px!important;color:var(--muted);font-weight:500!important;line-height:1.6}.primary-action{width:100%;margin-top:8px;border-color:var(--blue);background:var(--blue);color:#fff;font-weight:760;transition:all var(--transition-fast)}.primary-action:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-hover),0 0 20px var(--glow-blue)}.primary-action:disabled{cursor:not-allowed;border-color:var(--line);background:var(--track);color:var(--muted)}[data-theme=dark] .primary-action{background:var(--blue-soft);color:var(--blue);border-color:var(--blue-line)}[data-theme=dark] .primary-action:hover:not(:disabled){background:var(--blue-line);color:#fff;box-shadow:var(--shadow-hover),0 0 24px #6ecfff33}.demo-frame{overflow:hidden}.demo-title{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);background:var(--sidebar-bg)}.demo-canvas{min-height:245px;padding:18px;background:var(--canvas)}.demo-canvas svg{width:100%;height:auto;display:block}.demo-controls{display:grid;gap:12px;padding:16px 18px;border-top:1px solid var(--line);background:var(--sidebar-bg)}.demo-controls label{display:grid;gap:7px;color:var(--muted);font-size:13px;font-weight:720}input[type=range]{width:100%;accent-color:var(--blue);cursor:pointer}.demo-controls select,.mobile-topbar select{width:100%;min-width:0;max-width:100%;min-height:40px;overflow:hidden;padding:0 10px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);color:var(--text);text-overflow:ellipsis;white-space:nowrap;transition:all var(--transition-fast)}.demo-controls select:focus,.mobile-topbar select:focus{outline:none;border-color:var(--blue-line);box-shadow:0 0 0 3px var(--blue-soft)}.demo-insight{margin:0;padding:15px 18px;border-top:1px solid var(--line);background:var(--panel-strong);color:var(--text);line-height:1.6}.axis{stroke:var(--muted);stroke-width:1.5}.curve{fill:none;stroke-linecap:round;stroke-linejoin:round}.primary{stroke:var(--blue);stroke-width:4}.secondary{stroke:var(--green);stroke-width:3}.dashed{stroke:var(--amber);stroke-width:3;stroke-dasharray:7 7}.tangent,.secant{stroke:var(--amber);stroke-width:3;stroke-linecap:round}.point{fill:var(--blue);stroke:#fff;stroke-width:3}.small-point{fill:var(--green);stroke:#fff;stroke-width:2}.descent-path{fill:none;stroke:var(--green);stroke-width:2.5;stroke-dasharray:5 5}.legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px;color:var(--muted);font-size:13px}.legend span{display:inline-flex;align-items:center;gap:6px}.legend i{width:18px;height:3px;display:inline-block;border-radius:999px;background:var(--blue)}.legend .dash{background:repeating-linear-gradient(90deg,var(--amber),var(--amber) 5px,transparent 5px,transparent 8px)}.legend .soft{background:var(--green)}.metric-pair{display:grid;gap:8px}.metric-pair strong{color:var(--muted);font-size:13px}.metric-pair span{padding:10px;border-radius:var(--radius-md);background:var(--blue-soft);color:var(--blue);font-size:22px;font-weight:780;text-align:center;transition:all var(--transition-fast)}.metric-pair span:hover{box-shadow:var(--shadow);transform:scale(1.02)}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:6px;padding:4px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--track)}.segmented.four{grid-template-columns:repeat(4,1fr)}.segmented button{min-height:36px;border:0;border-radius:var(--radius-sm);background:transparent;color:var(--muted);font-weight:750;transition:all var(--transition-fast)}.segmented button:hover:not(.active){color:var(--text)}.segmented button.active{background:var(--panel);color:var(--blue);box-shadow:0 1px 6px #16202a14}.flow,.auto-flow{display:flex;align-items:center;justify-content:center;gap:12px;min-height:210px;flex-wrap:wrap}.flow-node,.auto-node{display:grid;place-items:center;min-width:72px;min-height:72px;padding:12px;border:1px solid var(--blue-line);border-radius:var(--radius-md);background:var(--blue-soft);color:var(--blue);font-size:24px;font-weight:800;transition:all var(--transition-fast)}.flow-node:hover,.auto-node:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.flow-edge{color:var(--green);font-weight:800}.graph-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.graph-cards div{min-height:86px;display:grid;align-content:center;gap:6px;padding:12px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);transition:all var(--transition-fast)}.graph-cards div:hover{border-color:var(--blue-line);transform:translateY(-2px);box-shadow:var(--shadow)}.graph-cards .wide{grid-column:span 3}.graph-cards .accent{border-color:var(--blue-line);background:var(--blue-soft)}.graph-cards span{color:var(--muted);font-size:13px;font-weight:720}.graph-cards strong{font-size:28px}.bar-list{display:grid;gap:14px;padding-top:12px}.bar-row{display:grid;grid-template-columns:minmax(54px,max-content) minmax(0,1fr) minmax(56px,max-content) minmax(76px,max-content);align-items:center;gap:10px}.bar-row span,.bar-row em{color:var(--muted);font-size:13px;font-style:normal;font-weight:720}.bar-row b{justify-self:end;color:var(--text);font-size:13px;font-variant-numeric:tabular-nums;white-space:nowrap}.bar-track{height:16px;border-radius:999px;background:var(--track);overflow:hidden}.bar-track div{height:100%;border-radius:inherit;background:var(--blue);transition:width .6s cubic-bezier(.4,0,.2,1)}.sample-line{position:relative;height:150px;margin:38px 12px 20px;border-bottom:4px solid var(--track)}.sample-line:before,.sample-line:after{position:absolute;bottom:-30px;color:var(--muted);font-size:12px;font-weight:750}.sample-line:before{left:0;content:var(--sample-line-start, "-3")}.sample-line:after{right:0;content:var(--sample-line-end, "3")}.sample-line span{position:absolute;bottom:-8px;width:44px;height:44px;display:grid;place-items:center;border:3px solid white;border-radius:50%;background:var(--green);color:#fff;font-size:12px;font-weight:800;transform:translate(-50%);box-shadow:0 6px 18px #16202a24;transition:all var(--transition-fast)}.sample-line span:hover{transform:translate(-50%) scale(1.1);box-shadow:0 8px 24px #16202a33}.concept-map{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.concept-map div{display:grid;gap:8px;padding:14px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);transition:all var(--transition-fast)}.concept-map div:hover{border-color:var(--blue-line);transform:translateY(-2px);box-shadow:var(--shadow)}.concept-map strong{color:var(--ink);font-size:18px}.concept-map span{padding:8px 10px;border-radius:6px;background:var(--canvas);color:var(--muted);font-weight:700;transition:all var(--transition-fast)}.concept-map small{color:var(--muted);line-height:1.55}.concept-map span:hover{background:var(--blue-soft);color:var(--blue)}.partial-visual{display:grid;grid-template-columns:minmax(0,1fr) 105px;gap:18px;align-items:center}.surface{position:relative;display:grid;grid-template-columns:repeat(7,1fr);gap:5px;aspect-ratio:1.25;padding:8px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--canvas);overflow:hidden}.surface span{border-radius:5px;background:var(--blue);transition:all var(--transition-fast)}.surface span:hover{opacity:.8}.slice{position:absolute;background:var(--amber);opacity:.8}.slice.horizontal{left:0;width:100%;height:3px}.slice.vertical{top:0;width:3px;height:100%}.surface-dot{position:absolute;width:14px;height:14px;border:3px solid white;border-radius:50%;background:var(--green);transform:translate(-50%,-50%);box-shadow:0 0 0 1px #00000014}.integral-bar{fill:#2563eb2e;stroke:#2563eb80}.auto-node{position:relative;min-width:96px;min-height:88px;font-size:18px;text-align:center}.auto-node span{color:var(--muted);font-size:12px;font-weight:650}.auto-node i{position:absolute;right:-18px;color:var(--muted);font-style:normal}.backward-strip{padding:14px;border-radius:var(--radius-md);background:var(--amber-soft);color:var(--amber);font-weight:740;text-align:center}.lottery{display:flex;min-height:180px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius-md)}.lottery div{display:grid;place-items:center;min-width:54px;padding:14px;background:var(--blue-soft);color:var(--blue);text-align:center;font-weight:750}.lottery div+div{background:var(--red-soft);color:var(--red)}.constraint{fill:none;stroke:var(--blue-line);stroke-width:8}.target-point{fill:var(--red);stroke:#fff;stroke-width:3}.tensor-boxes{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px;align-items:end;min-height:210px}.tensor-boxes div{display:grid;align-content:center;gap:8px;min-height:74px;padding:10px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);color:var(--muted);text-align:center;transition:all var(--transition-fast)}.tensor-boxes div:nth-child(2){min-height:92px}.tensor-boxes div:nth-child(3){min-height:116px}.tensor-boxes div:nth-child(4){min-height:148px}.tensor-boxes div:nth-child(5){min-height:178px}.tensor-boxes div.active{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue)}.tensor-boxes div:hover{border-color:var(--blue-line);transform:scale(1.03)}.tensor-boxes strong{color:var(--text)}.tensor-boxes span{font-size:12px;font-weight:700}.vector-line{stroke:var(--blue);stroke-width:5;stroke-linecap:round}.base-shape{fill:#6170831f;stroke:var(--muted);stroke-width:2}.transformed-shape{fill:#2563eb3d;stroke:var(--blue);stroke-width:3}.svd-bars{display:flex;align-items:end;justify-content:center;gap:12px;min-height:210px;padding-top:20px}.svd-bars div{position:relative;width:36px;min-height:8px;border-radius:7px 7px 0 0;background:var(--track);transition:all var(--transition-fast)}.svd-bars div.kept{background:var(--blue)}.svd-bars div:hover{opacity:.85}.svd-bars span{position:absolute;top:-23px;left:50%;color:var(--muted);font-size:12px;font-weight:750;transform:translate(-50%)}.svg-label{fill:var(--text);font-size:18px;font-weight:800}.contour{fill:none;stroke:#16825d8c;stroke-width:3}.matrix-grid{display:grid;grid-template-columns:repeat(2,96px);justify-content:center;gap:10px;min-height:210px;align-content:center}.matrix-grid span{display:grid;place-items:center;min-height:76px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);color:var(--muted);font-size:24px;font-weight:800;transition:all var(--transition-fast)}.matrix-grid span:hover{transform:scale(1.05)}.matrix-grid span.diag{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue)}.equation-card{display:grid;gap:12px;min-height:210px;align-content:center;padding:16px}.equation-card strong,.equation-card span{display:block;padding:14px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);transition:all var(--transition-fast)}.equation-card span{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue);font-weight:800}.prob-grid{display:flex;align-items:center;min-height:190px;padding:18px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field)}.prob-grid>div{position:relative;min-width:42px;height:92px;border-radius:var(--radius-md);background:var(--blue-soft);overflow:hidden;transition:all var(--transition-fast)}.prob-grid>div:hover{transform:scale(1.05)}.prob-grid span{position:absolute;top:10px;left:12px;color:var(--blue);font-weight:800}.prob-grid b{position:absolute;left:0;bottom:0;height:38px;display:grid;place-items:center;min-width:34px;background:var(--green);color:var(--panel);font-size:12px}.comparison-grid,.markov-chain{display:grid;grid-template-columns:1fr 1fr;gap:14px;min-height:210px;align-content:center}.comparison-grid div,.markov-chain div{display:grid;gap:10px;padding:16px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);transition:all var(--transition-fast)}.comparison-grid div:hover,.markov-chain div:hover{border-color:var(--blue-line);transform:translateY(-2px);box-shadow:var(--shadow)}.comparison-grid strong,.markov-chain strong{color:var(--blue);font-size:20px}.comparison-grid span,.markov-chain span{color:var(--muted);font-weight:700}.joint-table{display:grid;grid-template-columns:repeat(4,minmax(48px,1fr));gap:8px;min-height:210px;align-content:center}.joint-table span,.joint-table b{display:grid;place-items:center;min-height:48px;border:1px solid var(--line);border-radius:var(--radius-md);background:var(--field);transition:all var(--transition-fast)}.joint-table span:hover{border-color:var(--blue-line);background:var(--blue-soft)}.joint-table b{border-color:var(--blue-line);background:var(--blue-soft);color:var(--blue)}.lesson-controls{display:flex;justify-content:space-between;gap:14px;margin:22px 0}.lesson-controls button{min-width:132px;padding:0 16px;font-weight:750;transition:all var(--transition-fast)}.lesson-controls button:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow)}.lesson-controls button:disabled{cursor:not-allowed;opacity:.45}@media(max-width:980px){.app-shell{display:block}.sidebar{display:none}.main{padding:14px}.mobile-topbar{position:sticky;top:0;z-index:10;display:grid;gap:12px;margin:-14px -14px 14px;padding:14px;border-bottom:1px solid var(--line);background:var(--topbar-bg);-webkit-backdrop-filter:blur(12px) saturate(1.1);backdrop-filter:blur(12px) saturate(1.1)}.brand.compact h1{font-size:18px}.lesson-header{display:grid;padding:20px}.lesson-header-actions{align-items:flex-start}.lesson-header h2{font-size:31px}.math-program-layout{grid-template-columns:1fr}.lesson-grid{grid-template-columns:minmax(0,1fr)}.demo-column{position:static}}@media(max-width:620px){.access-actions{grid-template-columns:1fr}.access-utility-actions{justify-self:end}.auth-info-card-layer{padding:14px}.auth-info-card{max-height:calc(100vh - 28px);padding:18px}.auth-info-card h2{font-size:19px}.lesson-header h2{font-size:27px;line-height:1.15}.lesson-header p:last-child,.concept-block p{font-size:15px}.concept-block,.quiz{padding:16px}.demo-canvas{min-height:210px;padding:12px}.partial-visual,.concept-map{grid-template-columns:1fr}.bar-row{grid-template-columns:minmax(54px,max-content) minmax(0,1fr) minmax(72px,max-content);gap:8px}.bar-row em{grid-column:2 / 4}.flow,.auto-flow{justify-content:flex-start}.auto-node i{display:none}.graph-cards{grid-template-columns:1fr}.graph-cards .wide{grid-column:auto}.comparison-grid,.markov-chain{grid-template-columns:1fr}.formula-panel .katex{font-size:1.12em}.symbol-guide div{grid-template-columns:1fr;gap:4px}.lesson-controls{display:grid;grid-template-columns:1fr 1fr}.lesson-controls button{min-width:0}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.17.0"}.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}
