:root{font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color-scheme:light;--bg: #f6f7fb;--surface: #ffffff;--surface-raised: #ffffff;--soft: #f1f2f9;--ink: #22263c;--ink-soft: #454b65;--muted: #80879b;--line: #e8eaf2;--accent: #6764bd;--accent-deep: #514e9e;--accent-soft: #eeedfb;--blue-soft: #eaf1fd;--shadow: 0 12px 38px rgba(35, 38, 81, .045);--shadow-hover: 0 20px 50px rgba(46, 44, 96, .105)}:root[data-theme=dark]{color-scheme:dark;--bg: #191c2b;--surface: #232739;--surface-raised: #292e42;--soft: #2d3248;--ink: #f0f1fa;--ink-soft: #d3d6e8;--muted: #a1a8be;--line: #353a50;--accent: #b5b1f1;--accent-deep: #c5c3fa;--accent-soft: #363753;--blue-soft: #2a3853;--shadow: 0 12px 38px rgba(0, 0, 0, .1);--shadow-hover: 0 20px 50px rgba(0, 0, 0, .2)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:var(--bg);color:var(--ink)}a{color:inherit;text-decoration:none}button,input{font:inherit}button{cursor:pointer}button,a,summary,input{outline-offset:4px}:focus-visible{outline:2px solid var(--accent)}::selection{background:var(--accent-soft);color:var(--ink)}svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex:none}[hidden]{display:none!important}h1,h2,h3,p{margin-top:0}.app-shell{min-height:100vh}.app-sidebar{width:244px;position:fixed;inset:0 auto 0 0;z-index:15;background:var(--surface);border-right:1px solid var(--line);padding:32px 17px 20px;display:flex;flex-direction:column}.brand{display:inline-flex;align-items:center;gap:11px;align-self:flex-start;margin:0 0 60px 13px;font-size:24px;font-weight:780;letter-spacing:-.07em;line-height:1}.brand-mark{width:42px;height:42px;flex:none;overflow:hidden;border-radius:12px;background:var(--accent-soft)}.brand-mark img,.topbar-avatar img{display:block;width:100%;height:100%;object-fit:cover}.brand-name{display:flex;flex-direction:column;gap:3px;line-height:1}.brand-name strong{font-size:18px;letter-spacing:-.06em;white-space:nowrap}.brand-name small{color:var(--accent);font-size:9px;font-weight:800;letter-spacing:.24em}.sidebar-group-label,.section-kicker,.card-eyebrow,.flashcard-label{font-size:10px;font-weight:800;letter-spacing:.15em}.sidebar-group-label{padding:0 16px 13px;color:var(--muted)}.sidebar-nav{display:grid;gap:4px}.nav-item{width:100%;min-height:45px;border:0;display:flex;align-items:center;gap:14px;padding:0 15px;border-radius:10px;background:transparent;color:var(--muted);text-align:left;font-size:13px;font-weight:650;transition:background .2s,color .2s,transform .2s}.nav-item:hover{background:var(--soft);color:var(--ink);transform:translate(2px)}.nav-item.active{color:var(--accent-deep);background:var(--accent-soft)}.nav-item svg{width:18px;height:18px}.search-key{margin-left:auto;color:var(--muted);font-size:10px;font-weight:500}.sidebar-bottom{margin-top:auto}.sidebar-note{padding:18px 16px;margin:0 5px 16px;border-radius:14px;background:var(--accent-soft)}.sidebar-note-icon{display:block;color:var(--accent);font-size:22px;margin-bottom:10px}.sidebar-note strong{font-size:13px}.sidebar-note p{margin:6px 0 0;font-size:11px;line-height:1.55;color:var(--muted)}.theme-toggle{width:100%;border:0;background:transparent;color:var(--muted);display:flex;align-items:center;gap:13px;padding:13px 15px;border-radius:10px;text-align:left;font-size:13px;font-weight:650}.theme-toggle:hover{background:var(--soft);color:var(--ink)}.theme-toggle svg{width:18px;height:18px}.theme-toggle-trail{margin-left:auto;font-size:17px}.app-main{margin-left:244px;min-width:0}.topbar{height:76px;display:flex;justify-content:space-between;align-items:center;gap:22px;padding:0 clamp(24px,4.5vw,72px);background:var(--surface);border-bottom:1px solid var(--line)}.topbar-title{white-space:nowrap;font-size:13px;font-weight:750}.topbar-dot{padding:0 9px;color:#c6c9d6}.topbar-muted{color:var(--muted);font-weight:450}.topbar-actions{display:flex;align-items:center;gap:19px}.topbar-search{width:236px;height:35px;display:flex;align-items:center;gap:9px;padding:0 10px;border:1px solid var(--line);border-radius:9px;color:var(--muted);background:var(--bg);text-align:left;font-size:11px}.topbar-search svg{width:15px;height:15px}.topbar-search kbd{margin-left:auto;border:1px solid var(--line);border-radius:4px;padding:2px 4px;font-size:9px;font-family:inherit}.topbar-avatar{width:34px;height:34px;flex:none;overflow:hidden;border-radius:50%;background:var(--accent-soft)}#main-content{min-height:calc(100vh - 155px)}.site-footer{max-width:1304px;display:flex;justify-content:space-between;gap:12px;margin:68px auto 0;padding:25px clamp(24px,4.5vw,72px) 34px;border-top:1px solid var(--line);color:var(--muted);font-size:11px}.mobile-nav{display:none}.home-page,.inner-page{max-width:1304px;padding:0 clamp(24px,4.5vw,72px);margin:auto}.page-enter{animation:page-in .42s ease both}@keyframes page-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.eyebrow,.section-kicker{color:var(--accent)}.eyebrow{display:flex;align-items:center;gap:8px;font-size:10px;font-weight:800;letter-spacing:.16em}.eyebrow-spark{font-size:17px;letter-spacing:0}.hero{display:grid;grid-template-columns:1.08fr .92fr;gap:20px;min-height:365px;padding:44px 0 30px;align-items:stretch}.hero-copy{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;min-width:0;padding:10px 0}.hero h1{font-size:clamp(38px,4.4vw,64px);letter-spacing:-.075em;line-height:1.1;font-weight:790;margin:19px 0 15px}.hero h1>span{color:#6663b9}:root[data-theme=dark] .hero h1>span{color:#b7b4f0}.hero-period{color:#a9a5ee}.hero-copy>p{max-width:500px;color:var(--muted);font-size:13px;line-height:1.75;margin-bottom:23px}.primary-button{min-height:42px;display:inline-flex;align-items:center;gap:29px;padding:0 17px;border-radius:9px;background:#6865bd;color:#fff;font-size:11px;font-weight:750;box-shadow:0 7px 18px #5b55ae26;transition:transform .2s,box-shadow .2s,background .2s}.primary-button:hover{transform:translateY(-2px);background:#5753ad;box-shadow:0 12px 24px #5b55ae3d}.primary-button span{font-size:18px;font-weight:400}.hero-art{min-height:310px;position:relative;overflow:hidden;border:1px solid #e9e8f6;border-radius:19px;background:#eeedfb;display:grid;place-items:center;isolation:isolate}:root[data-theme=dark] .hero-art{background:#30334b;border-color:#3c405c}.hero-orbit{position:absolute;width:330px;height:330px;border:1px solid rgba(99,95,168,.15);border-radius:50%}.orbit-one{transform:scale(1.55)}.orbit-two{transform:scale(.8)}.hero-tile{position:absolute;width:215px;height:225px;padding:20px;border-radius:12px;background:#fff;box-shadow:0 22px 45px #554f9c21}.tile-back{transform:translate(47px,-12px) rotate(15deg);opacity:.6;display:flex;justify-content:space-between;flex-direction:column;color:#8f8ab9;font-size:13px}.tile-lines{display:grid;gap:9px}.tile-lines i{width:80%;height:5px;background:#e5e3f7;border-radius:4px}.tile-lines i:nth-child(2){width:65%}.tile-lines i:nth-child(3){width:45%}.tile-front{transform:translate(-33px,14px) rotate(-9deg);display:flex;flex-direction:column}.tile-top,.tile-bottom{display:flex;align-items:center;justify-content:space-between;color:#8581b2;font-size:8px;letter-spacing:.14em;font-weight:800}.tile-top span:last-child{font-size:17px}.tile-quote{margin:auto 0;color:#373757;font-size:31px;line-height:1.18;font-weight:750;letter-spacing:-.065em}.tile-quote em{font-style:normal;color:#817dc6}.tile-rule{height:1px;background:#e5e4ef;margin-bottom:12px}.tile-bottom span:last-child{font-size:15px}.hero-dot{position:absolute;width:8px;height:8px;border-radius:50%;background:#b4b0e9}.dot-one{top:15%;left:17%}.dot-two{right:14%;bottom:18%;width:5px;height:5px}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-heading h2{font-size:22px;letter-spacing:-.055em;margin:7px 0 0;font-weight:760}.section-assist,.section-count{color:var(--muted);font-size:11px;padding-bottom:3px}.continue-section{margin-top:12px}.continue-card{min-height:147px;display:flex;align-items:center;gap:27px;padding:21px 27px;border-radius:17px;background:#303252;color:#f9f9ff;box-shadow:0 14px 30px #2426501a;transition:transform .22s,box-shadow .22s}.continue-card:hover{transform:translateY(-3px);box-shadow:0 22px 38px #2426502e}.continue-visual{width:95px;min-height:95px;flex:none;display:flex;justify-content:space-between;flex-direction:column;padding:13px;border-radius:12px;background:#6867a8}.continue-visual-mark{font-size:23px;color:#f6e2ba}.continue-visual-number{align-self:flex-end;font-size:8px;letter-spacing:.08em;color:#e3e3fd}.continue-copy{flex:1;min-width:0;display:flex;flex-direction:column}.continue-label{color:#b8b8d8;font-size:9px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.label-divider{color:#777a9d;padding:0 6px}.continue-copy strong{font-size:19px;font-weight:720;letter-spacing:-.04em;margin:8px 0 14px}.continue-progress-row{display:flex;justify-content:space-between;gap:12px;color:#c6c7df;font-size:10px;margin-bottom:7px}.progress-track{height:5px;overflow:hidden;border-radius:99px;background:#525574}.progress-track>span{display:block;height:100%;width:0;border-radius:inherit;background:#ada9f2;transition:width .5s ease}.continue-action{display:flex;align-items:center;gap:14px;white-space:nowrap;font-size:11px;font-weight:700}.continue-action span{width:33px;height:33px;display:grid;place-items:center;border-radius:50%;background:#525579;font-size:17px;font-weight:400}.subjects-section{margin-top:53px;scroll-margin-top:24px}.subject-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.subject-card{min-height:235px;display:flex;flex-direction:column;padding:20px;border:1px solid var(--line);border-radius:15px;background:var(--surface);box-shadow:var(--shadow);transition:transform .22s,border-color .22s,box-shadow .22s}.subject-card:hover{transform:translateY(-4px);border-color:#bbb8ec;box-shadow:var(--shadow-hover)}.subject-card-top{display:flex;align-items:start;justify-content:space-between}.subject-symbol,.subject-hero-icon{display:grid;place-items:center;border-radius:12px;font-size:20px;font-weight:780}.subject-symbol{width:42px;height:42px}.tone-blue{color:#5b82bd;background:#e8f0fc}.tone-green{color:#609a85;background:#e4f3ed}.tone-purple{color:#8975b9;background:#eee9f9}.tone-orange{color:#b68e64;background:#f9f0e6}.tone-red{color:#bc7e8e;background:#faeaf0}:root[data-theme=dark] .tone-blue{color:#b6d4ff;background:#334461}:root[data-theme=dark] .tone-green{color:#b0dfca;background:#2f4a45}:root[data-theme=dark] .tone-purple{color:#d3c5f5;background:#443c61}:root[data-theme=dark] .tone-orange{color:#e6c59e;background:#544439}:root[data-theme=dark] .tone-red{color:#efbcc9;background:#543e4b}.subject-card-arrow{color:#adb0c3;font-size:17px;transition:color .2s,transform .2s}.subject-card:hover .subject-card-arrow{color:var(--accent);transform:translate(2px,-2px)}.subject-card-body{display:flex;flex-direction:column;margin:18px 0 0}.card-eyebrow{color:var(--muted);font-size:9px}.subject-card-body strong{font-size:14px;letter-spacing:-.03em;margin:8px 0 6px}.subject-description{color:var(--muted);font-size:10px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.subject-card-foot{display:flex;align-items:center;gap:7px;border-top:1px solid var(--line);margin-top:auto;padding-top:14px;color:var(--muted);font-size:10px}.lesson-count-dot,.meta-dot{width:6px;height:6px;display:inline-block;border-radius:50%;background:#aaa7e8}.recent-section{margin-top:55px}.recent-list{overflow:hidden;border:1px solid var(--line);border-radius:15px;background:var(--surface);box-shadow:var(--shadow)}.recent-row{min-height:70px;display:flex;align-items:center;gap:19px;padding:12px 20px;border-bottom:1px solid var(--line);transition:background .2s}.recent-row:last-child{border-bottom:0}.recent-row:hover{background:var(--soft)}.recent-index{width:29px;color:#aaa9c7;font-size:11px;font-weight:750}.recent-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}.recent-main strong{font-size:12px;letter-spacing:-.02em}.recent-main small,.recent-date{font-size:10px;color:var(--muted)}.recent-arrow{color:var(--accent);font-size:18px}.empty-state{padding:27px;border:1px dashed var(--line);border-radius:14px;background:var(--surface);color:var(--muted);font-size:12px;line-height:1.6}.empty-state code{padding:2px 4px;border-radius:4px;background:var(--soft)}.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:9px;padding-top:28px;color:var(--muted);font-size:10px}.breadcrumbs a:hover{color:var(--accent)}.breadcrumbs>span:last-child{color:var(--ink-soft)}.inner-page{max-width:1190px}.subject-hero{display:flex;align-items:center;gap:28px;min-height:245px;margin-top:24px;padding:38px 43px;border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow)}.subject-hero-icon{width:80px;height:80px;flex:none;font-size:37px;border-radius:20px}.subject-hero h1{margin:8px 0;font-size:clamp(32px,3.8vw,48px);letter-spacing:-.065em;line-height:1.1}.accent-dot{color:#918dd8}.subject-hero p{max-width:590px;color:var(--muted);font-size:12px;line-height:1.7;margin-bottom:17px}.subject-hero-meta{display:flex;align-items:center;gap:8px;color:var(--ink-soft);font-size:10px;font-weight:650}.subject-lessons{margin-top:44px;min-height:200px}.subject-lesson-list{display:grid;gap:13px}.subject-lesson-card{min-height:142px;display:flex;align-items:center;gap:22px;padding:22px 25px;border:1px solid var(--line);border-radius:15px;background:var(--surface);box-shadow:var(--shadow);transition:transform .2s,border-color .2s,box-shadow .2s}.subject-lesson-card:hover{transform:translateY(-3px);border-color:#bbb8ec;box-shadow:var(--shadow-hover)}.lesson-card-index{width:46px;height:46px;flex:none;display:grid;place-items:center;border-radius:12px;background:var(--accent-soft);color:var(--accent-deep);font-size:13px;font-weight:800}.lesson-card-content{min-width:0;flex:1;display:flex;flex-direction:column}.lesson-card-date{color:var(--accent);font-size:9px;font-weight:800;letter-spacing:.11em;text-transform:uppercase}.lesson-card-date span,.lesson-card-stats span{padding:0 7px;color:var(--muted)}.lesson-card-content strong{font-size:17px;letter-spacing:-.04em;margin:9px 0 6px}.lesson-card-description{max-width:660px;color:var(--muted);font-size:11px;line-height:1.5;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.lesson-card-stats{margin-top:11px;color:var(--muted);font-size:10px}.lesson-card-action{display:inline-flex;align-items:center;gap:13px;padding:9px 11px;border:1px solid var(--line);border-radius:8px;color:var(--accent-deep);font-size:10px;font-weight:800}.lesson-card-action span{font-size:15px;font-weight:400}.lesson-page{max-width:1200px}.lesson-hero{padding:55px 0 39px;border-bottom:1px solid var(--line)}.kicker-divider{padding:0 7px;opacity:.45}.lesson-hero h1{max-width:810px;margin:13px 0 10px;font-size:clamp(39px,4.5vw,61px);line-height:1.1;letter-spacing:-.07em}.lesson-lead{color:var(--muted);font-size:13px;line-height:1.6;margin-bottom:19px}.lesson-meta{display:flex;gap:8px;flex-wrap:wrap}.meta-pill{padding:7px 10px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--ink-soft);font-size:10px}.ai-summary-action{display:flex;align-items:center;gap:13px;flex-wrap:wrap;margin-top:22px;color:var(--muted);font-size:11px}.ai-summary-action button{padding:10px 15px;border:1px solid var(--accent);border-radius:9px;background:var(--accent-soft);color:var(--accent-deep);font-size:12px;font-weight:750}.ai-summary-action button:hover{background:var(--accent);color:var(--surface)}.ai-summary-action button:disabled{cursor:wait;opacity:.7}.ai-summary-card{max-width:925px;margin-top:30px;padding:26px 29px;border:1px solid var(--line);border-radius:15px;background:var(--surface);box-shadow:var(--shadow)}.ai-summary-card .section-kicker{color:var(--accent)}.ai-summary-card h2{margin:9px 0 16px;font-size:22px;letter-spacing:-.04em}.ai-summary-card p{color:var(--ink-soft);font-size:13px;line-height:1.7;white-space:pre-line}.ai-summary-card #ai-summary-status{margin:0;color:var(--muted)}.ai-summary-languages{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.ai-summary-language{min-width:0;padding:20px;border:1px solid var(--line);border-radius:12px;background:var(--soft)}.ai-summary-language h3{margin:0 0 13px;font-size:17px}.ai-summary-language p{margin-bottom:0}.ai-summary-columns{display:grid;gap:18px;margin-top:20px;padding-top:17px;border-top:1px solid var(--line)}.ai-summary-columns h4{margin:0 0 9px;font-size:12px}.ai-summary-columns ul{margin:0;padding-left:20px;color:var(--ink-soft);font-size:12px;line-height:1.65}.ai-summary-columns li{margin:6px 0}.ai-summary-columns li::marker{color:var(--accent)}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 198px;gap:clamp(34px,5vw,75px);padding-top:38px}.lesson-content{min-width:0}.reading-section{max-width:725px;margin:0 0 43px;scroll-margin-top:20px}.reading-section-number{color:#9995cf;font-size:9px;font-weight:800;letter-spacing:.12em;margin-bottom:10px}.reading-objectives,.reading-summary{padding:23px 27px;border:1px solid #dedcf8;border-radius:15px;background:var(--accent-soft)}.reading-summary{background:var(--blue-soft);border-color:#dce5f5}:root[data-theme=dark] .reading-objectives,:root[data-theme=dark] .reading-summary{border-color:var(--line)}.reading-objectives .reading-section-number,.reading-summary .reading-section-number{margin-bottom:7px}.prose{min-width:0;color:var(--ink-soft);font-size:13px;line-height:1.82;overflow-wrap:anywhere}.prose h2,.prose h3,.prose h4,.prose h5{color:var(--ink);line-height:1.3;letter-spacing:-.045em;scroll-margin-top:24px}.prose h2{font-size:23px;margin:0 0 17px}.prose h3{font-size:18px;margin:26px 0 11px}.prose h4{font-size:15px;margin:22px 0 10px}.prose p,.prose ul,.prose ol{margin:0 0 17px}.prose p:last-child,.prose ul:last-child,.prose ol:last-child{margin-bottom:0}.prose li{padding-left:4px;margin:5px 0}.prose li::marker{color:var(--accent)}.prose a{color:var(--accent-deep);text-decoration:underline;text-underline-offset:3px}.prose blockquote{margin:22px 0;padding:14px 19px;border-left:3px solid var(--accent);border-radius:0 9px 9px 0;background:var(--accent-soft);color:var(--ink-soft)}.prose pre{margin:21px 0;padding:19px 21px;border:1px solid #3b405b;border-radius:11px;overflow-x:auto;background:#24283b;color:#f0f1fb;font-size:12px;line-height:1.65}.prose code{font-size:.9em}.prose :not(pre)>code{padding:3px 5px;border-radius:4px;background:var(--accent-soft);color:var(--accent-deep)}.prose table{max-width:100%;display:block;overflow-x:auto;margin:21px 0;border-collapse:collapse;font-size:11px}.prose th,.prose td{padding:10px 12px;border:1px solid var(--line);text-align:left}.prose th{background:var(--soft);color:var(--ink)}.prose img{max-width:100%;height:auto;border-radius:8px}.prose .katex-display{overflow-x:auto;overflow-y:hidden}.lesson-sidebar{padding-top:1px}.sidebar-panel{position:sticky;top:22px;padding:19px 18px;border:1px solid var(--line);border-radius:13px;background:var(--surface);box-shadow:var(--shadow)}.sidebar-panel .section-kicker{display:block;margin-bottom:14px}.sidebar-panel a{display:flex;justify-content:space-between;gap:9px;border-top:1px solid var(--line);padding:10px 0;color:var(--muted);font-size:10px;line-height:1.4}.sidebar-panel a:hover{color:var(--accent)}.sidebar-panel a:last-child{padding-bottom:0}.sidebar-panel a span{color:var(--accent)}.reading-tip{display:flex;gap:9px;margin:16px 3px;color:var(--accent);font-size:13px}.reading-tip span{color:var(--muted);font-size:10px;line-height:1.5}.practice-section{margin-top:62px;scroll-margin-top:20px}.ai-exercise-section{max-width:925px}.ai-exercise-button{padding:11px 16px;border:1px solid var(--accent);border-radius:9px;background:var(--accent-soft);color:var(--accent-deep);font-size:12px;font-weight:750}.ai-exercise-button:hover{background:var(--accent);color:var(--surface)}.ai-exercise-button:disabled{cursor:wait;opacity:.7}.ai-exercise-status{margin:16px 0 0;color:var(--muted);font-size:12px}.ai-exercise-grid{display:grid;gap:13px;margin-top:19px}.ai-exercise-card{padding:22px 25px;border:1px solid var(--line);border-radius:15px;background:var(--surface);box-shadow:var(--shadow)}.ai-exercise-card .section-kicker{color:var(--accent)}.ai-exercise-card h3{margin:10px 0 16px;color:var(--ink);font-size:15px;line-height:1.5;overflow-wrap:anywhere}.ai-exercise-card details{border-top:1px solid var(--line);padding-top:12px}.ai-exercise-card summary{color:var(--accent-deep);cursor:pointer;font-size:12px;font-weight:750}.ai-exercise-card details p{margin:12px 0 0;color:var(--ink-soft);font-size:12px;line-height:1.65;white-space:pre-line;overflow-wrap:anywhere}.exercise-grid{display:grid;gap:13px}.exercise-card{padding:20px 24px;border:1px solid var(--line);border-radius:15px;background:var(--surface);box-shadow:var(--shadow)}.exercise-top{display:flex;align-items:center;gap:9px;margin-bottom:15px;color:var(--accent);font-size:9px;font-weight:800;letter-spacing:.14em}.exercise-number{width:27px;height:27px;display:grid;place-items:center;border-radius:8px;background:var(--accent-soft);letter-spacing:0;font-size:10px}.exercise-question h2,.exercise-question h3,.exercise-question h4{margin:0 0 10px;font-size:16px}.exercise-question p{margin-bottom:12px}.answer-disclosure{margin-top:17px;border-top:1px solid var(--line)}.answer-button{width:100%;display:flex;align-items:center;justify-content:space-between;border:0;cursor:pointer;padding:15px 0 0;background:transparent;color:var(--accent-deep);text-align:left;font-size:11px;font-weight:800}.answer-toggle-icon{width:25px;height:25px;display:grid;place-items:center;border-radius:7px;background:var(--accent-soft);font-size:17px;font-weight:400;transition:transform .25s}.answer-disclosure.is-open .answer-toggle-icon{transform:rotate(45deg)}.answer-reveal{display:grid;grid-template-rows:0fr;opacity:0;visibility:hidden;transition:grid-template-rows .3s ease,opacity .3s ease,visibility 0s linear .3s}.answer-disclosure.is-open .answer-reveal{grid-template-rows:1fr;opacity:1;visibility:visible;transition:grid-template-rows .3s ease,opacity .3s ease}.answer-reveal-inner{min-height:0;overflow:hidden}.answer-panel{margin-top:14px;padding:15px 17px;border-radius:10px;background:var(--accent-soft)}.answer-label{display:block;margin-bottom:8px;color:var(--accent);font-size:9px;font-weight:800;letter-spacing:.14em}.answer-content{font-size:12px}.flashcards-section{margin-top:62px}.section-note{margin:-7px 0 18px;color:var(--muted);font-size:11px}.flashcard-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.flashcard{display:block;width:100%;height:220px;padding:0;border:0;background:transparent;color:inherit;text-align:left;cursor:pointer;perspective:900px}.flashcard-inner{width:100%;height:220px;position:relative;display:block;transform-style:preserve-3d;transition:transform .48s cubic-bezier(.2,.7,.2,1)}.flashcard[data-flipped=true] .flashcard-inner{transform:rotateY(180deg)}.flashcard-face{position:absolute;inset:0;display:flex;flex-direction:column;height:220px;overflow-y:auto;padding:21px 23px;border:1px solid var(--line);border-radius:15px;background:var(--surface);box-shadow:var(--shadow);backface-visibility:hidden;-webkit-backface-visibility:hidden}.flashcard:hover .flashcard-face{box-shadow:var(--shadow-hover)}.flashcard-back{transform:rotateY(180deg);border-color:#dcdaf5;background:var(--accent-soft)}:root[data-theme=dark] .flashcard-back{border-color:var(--line)}.flashcard-label{display:flex;justify-content:space-between;gap:8px;color:var(--accent);font-size:9px}.flashcard-label>span{color:var(--muted)}.flashcard-text{display:block;margin:auto 0;padding:14px 0;color:var(--ink);font-size:14px;line-height:1.55;font-weight:690;letter-spacing:-.02em}.flashcard-text p{margin-bottom:8px}.flashcard-hint{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:10px}.flashcard-hint span{color:var(--accent);font-size:17px}.back-link{display:inline-flex;margin-top:50px;color:var(--accent-deep);font-size:11px;font-weight:750}.search-dialog{width:min(560px,calc(100vw - 32px));max-height:min(70vh,560px);padding:0;border:1px solid var(--line);border-radius:15px;background:var(--surface);color:var(--ink);box-shadow:0 32px 95px #15183038}.search-dialog::backdrop{background:#191c2e6e;backdrop-filter:blur(3px)}.search-dialog-top{display:flex;align-items:center;gap:12px;padding:15px 17px;border-bottom:1px solid var(--line)}.search-dialog-top svg{color:var(--accent)}.search-dialog-top input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--ink);font-size:14px}.search-dialog-top input::placeholder{color:var(--muted)}.search-close{border:1px solid var(--line);border-radius:5px;padding:4px 6px;background:var(--soft);color:var(--muted);font-size:10px}.search-results{max-height:450px;overflow-y:auto;padding:9px}.search-results a{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:11px 13px;border-radius:9px}.search-results a:hover{background:var(--accent-soft)}.search-results a>span:first-child{display:flex;flex-direction:column;gap:3px}.search-results strong{font-size:12px}.search-results small{color:var(--muted);font-size:10px}.search-results a>span:last-child{color:var(--accent)}.search-empty{padding:20px;color:var(--muted);font-size:12px}@media(max-width:1160px){.subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero{grid-template-columns:1.1fr .9fr}.hero h1{font-size:42px}.hero-art{min-height:280px}}@media(max-width:900px){.app-sidebar{display:none}.app-main{margin-left:0}.topbar{height:66px}.mobile-nav{position:fixed;inset:auto 0 0;z-index:20;display:grid;grid-template-columns:repeat(4,1fr);min-height:65px;padding-bottom:env(safe-area-inset-bottom);border-top:1px solid var(--line);background:var(--surface);box-shadow:0 -6px 28px #191c360a}.mobile-nav a,.mobile-nav button{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:3px;border:0;background:transparent;color:var(--muted);font-size:10px;font-weight:650}.mobile-nav a.active{color:var(--accent)}.mobile-nav svg{width:19px;height:19px}.site-footer{margin-bottom:calc(65px + env(safe-area-inset-bottom))}}@media(max-width:680px){.topbar{padding:0 22px}.topbar-search{width:34px;padding:0 9px}.topbar-search span,.topbar-search kbd{display:none}.topbar-actions{gap:12px}.home-page,.inner-page{padding:0 20px}.hero{display:flex;flex-direction:column;gap:23px;padding:40px 0 24px}.hero h1{font-size:clamp(39px,9vw,54px)}.hero-art{min-height:240px}.hero-tile{width:185px;height:190px}.tile-quote{font-size:27px}.continue-section{margin-top:14px}.continue-card{gap:16px;padding:18px;min-height:120px}.continue-visual{width:68px;min-height:78px}.continue-copy strong{font-size:16px}.continue-action{font-size:0}.continue-action span{width:30px;height:30px;font-size:16px}.subjects-section,.recent-section{margin-top:44px}.section-heading h2{font-size:21px}.subject-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.subject-card{min-height:220px;padding:16px}.recent-date{display:none}.subject-hero{margin-top:20px;padding:27px;min-height:0;align-items:flex-start;gap:17px}.subject-hero-icon{width:58px;height:58px;border-radius:14px;font-size:27px}.subject-hero h1{font-size:34px}.subject-hero p{font-size:11px}.subject-lesson-card{align-items:flex-start;gap:14px;padding:18px}.lesson-card-index{width:37px;height:37px}.lesson-card-action{align-self:center;font-size:0;gap:0}.lesson-card-action span{font-size:17px}.lesson-card-description{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.lesson-layout{display:block}.lesson-sidebar{display:none}.lesson-hero{padding:43px 0 34px}.lesson-hero h1{font-size:42px}.ai-summary-languages,.flashcard-grid{grid-template-columns:1fr}.practice-section{margin-top:52px}}@media(max-width:460px){.subject-grid{grid-template-columns:1fr}.subject-card{min-height:192px}.subject-hero{display:block}.subject-hero-icon{margin-bottom:18px}.subject-lesson-card{position:relative}.lesson-card-action{position:absolute;top:19px;right:19px}.lesson-card-content{padding-right:18px}.lesson-card-content strong{font-size:15px}.section-assist{display:none}.continue-card{gap:11px}.continue-visual{width:56px;min-height:70px;padding:9px}.continue-label{font-size:8px}.continue-copy strong{font-size:14px}.recent-row{gap:11px;padding:12px 14px}.recent-index{width:22px}.reading-objectives,.reading-summary{padding:20px}.exercise-card{padding:17px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_AMS-Regular.BQhdFMY1.woff2) format("woff2"),url(/_astro/KaTeX_AMS-Regular.DMm9YOAa.woff) format("woff"),url(/_astro/KaTeX_AMS-Regular.DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_Caligraphic-Bold.Dq_IR9rO.woff2) format("woff2"),url(/_astro/KaTeX_Caligraphic-Bold.BEiXGLvX.woff) format("woff"),url(/_astro/KaTeX_Caligraphic-Bold.ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Caligraphic-Regular.Di6jR-x-.woff2) format("woff2"),url(/_astro/KaTeX_Caligraphic-Regular.CTRA-rTL.woff) format("woff"),url(/_astro/KaTeX_Caligraphic-Regular.wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_Fraktur-Bold.CL6g_b3V.woff2) format("woff2"),url(/_astro/KaTeX_Fraktur-Bold.BsDP51OF.woff) format("woff"),url(/_astro/KaTeX_Fraktur-Bold.BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Fraktur-Regular.CTYiF6lA.woff2) format("woff2"),url(/_astro/KaTeX_Fraktur-Regular.Dxdc4cR9.woff) format("woff"),url(/_astro/KaTeX_Fraktur-Regular.CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_Main-Bold.Cx986IdX.woff2) format("woff2"),url(/_astro/KaTeX_Main-Bold.Jm3AIy58.woff) format("woff"),url(/_astro/KaTeX_Main-Bold.waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/_astro/KaTeX_Main-BoldItalic.DxDJ3AOS.woff2) format("woff2"),url(/_astro/KaTeX_Main-BoldItalic.SpSLRI95.woff) format("woff"),url(/_astro/KaTeX_Main-BoldItalic.DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_Main-Italic.NWA7e6Wa.woff2) format("woff2"),url(/_astro/KaTeX_Main-Italic.BMLOBm91.woff) format("woff"),url(/_astro/KaTeX_Main-Italic.3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Main-Regular.B22Nviop.woff2) format("woff2"),url(/_astro/KaTeX_Main-Regular.Dr94JaBh.woff) format("woff"),url(/_astro/KaTeX_Main-Regular.ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/_astro/KaTeX_Math-BoldItalic.CZnvNsCZ.woff2) format("woff2"),url(/_astro/KaTeX_Math-BoldItalic.iY-2wyZ7.woff) format("woff"),url(/_astro/KaTeX_Math-BoldItalic.B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_Math-Italic.t53AETM-.woff2) format("woff2"),url(/_astro/KaTeX_Math-Italic.DA0__PXp.woff) format("woff"),url(/_astro/KaTeX_Math-Italic.flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/_astro/KaTeX_SansSerif-Bold.D1sUS0GD.woff2) format("woff2"),url(/_astro/KaTeX_SansSerif-Bold.DbIhKOiC.woff) format("woff"),url(/_astro/KaTeX_SansSerif-Bold.CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/_astro/KaTeX_SansSerif-Italic.C3H0VqGB.woff2) format("woff2"),url(/_astro/KaTeX_SansSerif-Italic.DN2j7dab.woff) format("woff"),url(/_astro/KaTeX_SansSerif-Italic.YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_SansSerif-Regular.DDBCnlJ7.woff2) format("woff2"),url(/_astro/KaTeX_SansSerif-Regular.CS6fqUqJ.woff) format("woff"),url(/_astro/KaTeX_SansSerif-Regular.BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Script-Regular.D3wIWfF6.woff2) format("woff2"),url(/_astro/KaTeX_Script-Regular.D5yQViql.woff) format("woff"),url(/_astro/KaTeX_Script-Regular.C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size1-Regular.mCD8mA8B.woff2) format("woff2"),url(/_astro/KaTeX_Size1-Regular.C195tn64.woff) format("woff"),url(/_astro/KaTeX_Size1-Regular.Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size2-Regular.Dy4dx90m.woff2) format("woff2"),url(/_astro/KaTeX_Size2-Regular.oD1tc_U0.woff) format("woff"),url(/_astro/KaTeX_Size2-Regular.B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/_astro/KaTeX_Size3-Regular.CTq5MqoE.woff) format("woff"),url(/_astro/KaTeX_Size3-Regular.DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Size4-Regular.Dl5lxZxV.woff2) format("woff2"),url(/_astro/KaTeX_Size4-Regular.BF-4gkZK.woff) format("woff"),url(/_astro/KaTeX_Size4-Regular.DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/_astro/KaTeX_Typewriter-Regular.CO6r4hn1.woff2) format("woff2"),url(/_astro/KaTeX_Typewriter-Regular.C0xS9mPB.woff) format("woff"),url(/_astro/KaTeX_Typewriter-Regular.D3Ib7_Hf.ttf) format("truetype")}.katex{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}