:root{--paper:#f6f4ee;--paper-light:#fdfcf9;--ink:#162636;--green:#16324f;--muted:#5c6c7c;--line:#d4dce4;--accent:#c4512d;--soft:#e7edf3;--serif:"Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", Georgia, serif;--sans:"Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;--mono:"Cascadia Code", Consolas, monospace;color-scheme:light;font-family:var(--sans);color:var(--ink);background:var(--paper);font-synthesis:none}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:132px}body{margin:0;font-size:15px;line-height:1.75}a{color:inherit;text-decoration:none}button,input,select{font:inherit}button{color:inherit;cursor:pointer;background:0 0;border:0}button:disabled{opacity:.45;cursor:not-allowed}a,button,input,select,summary{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:4px}input{accent-color:var(--green)}h1,h2,h3,h4,p{margin:0}h1,h2,h3{font-weight:500}h1,h2{font-family:var(--serif);letter-spacing:-.03em}h3{line-height:1.55}img,video{max-width:100%}svg{flex-shrink:0}fieldset{border:0;min-width:0;margin:0;padding:0}small{font-size:12px}strong{font-weight:600}::selection{background:#d5e2ee}details>summary{cursor:pointer;list-style-position:outside}details[open]>summary{margin-bottom:18px}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.skip-link{background:var(--green);color:#fff;z-index:100;padding:12px 20px;position:fixed;top:-100px;left:20px}.skip-link:focus{top:8px}.muted{color:var(--muted)}.eyebrow{font-family:var(--mono);letter-spacing:.13em;text-transform:uppercase;color:var(--muted);font-size:11px;line-height:1.5}.primary-button,.secondary-button{border-radius:3px;justify-content:center;align-items:center;gap:16px;min-height:46px;padding:12px 21px;font-size:14px;font-weight:500;transition:background .15s,border-color .15s;display:inline-flex}.primary-button{background:var(--green);color:var(--paper-light)}.primary-button:hover{background:#214972}.secondary-button{border:1px solid var(--line);background:var(--paper-light)}.secondary-button:hover{border-color:var(--green)}.text-button{color:var(--green);align-items:center;gap:8px;padding:7px 0;font-size:13px;display:inline-flex}.text-button:hover{text-underline-offset:5px;text-decoration:underline}.icon-button{border-radius:4px;justify-content:center;align-items:center;min-width:40px;min-height:40px;display:inline-flex}.icon-button:hover{background:var(--soft)}.site-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:24px;height:96px;margin:0 auto;padding:0 5%;display:flex}.wordmark{flex-shrink:0;align-items:center;gap:13px;display:inline-flex}.wordmark-symbol{color:var(--green);font-family:Georgia,serif;font-size:42px;line-height:1}.wordmark>span:last-child{font-family:var(--serif);letter-spacing:.06em;font-size:19px;font-weight:600;line-height:1.35}.wordmark small{font-size:9px;font-family:var(--mono);letter-spacing:.12em;color:var(--muted);margin-top:5px;font-weight:400;display:block}.site-header nav{scrollbar-width:none;gap:24px;font-size:13px;display:flex;overflow-x:auto}.site-header nav a{white-space:nowrap;border-bottom:2px solid #0000;padding:34px 0 31px}.site-header nav a.active{border-color:var(--green);color:var(--green);font-weight:600}.edition{font-family:var(--mono);color:var(--muted);flex-shrink:0;font-size:11px}.home-main{max-width:1360px;margin:auto;padding:0 5%}.home-hero{grid-template-columns:1.12fr 1fr;align-items:center;gap:38px;padding:64px 0 58px;display:grid}.home-hero h1{margin:18px 0 20px;font-size:clamp(34px,3.6vw,50px);font-weight:600;line-height:1.38}.home-hero h1 span{color:var(--green)}.hero-deck{color:#465869;margin-bottom:28px;font-size:15px;line-height:1.9}.hero-actions{flex-wrap:wrap;align-items:center;gap:14px;display:flex}.hero-meta{color:var(--muted);flex-wrap:wrap;gap:10px;margin-top:20px;font-size:11px;display:flex}.hero-visual{color:var(--green);flex-direction:column;justify-content:center;align-self:stretch;display:flex;position:relative}.hero-diagram{background:var(--paper-light);border:1px solid var(--line);border-radius:4px;width:100%;height:auto}.hero-equation{flex-direction:column;align-items:center;gap:8px;padding-top:14px;display:flex}.hero-equation>.katex,.hero-equation>span:first-child{font-size:23px}.hero-equation>span:last-child{color:var(--muted);font-size:11px}.learning-route{border-block:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:20px 0;font-size:12px;display:flex}.learning-route>.route-label{color:var(--muted);font-size:11px;font-family:var(--mono);padding-right:24px}.learning-route>svg{color:#7c8d9e;width:15px}.section-heading{flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:20px;margin-bottom:24px;display:flex}.section-heading h2{margin-top:10px;font-size:29px}.section-heading>p{color:var(--muted);font-size:12px}.module-tabs{flex-wrap:wrap;gap:10px;margin-bottom:26px;display:flex}.module-tabs button{border:1px solid var(--line);background:var(--paper-light);color:var(--muted);border-radius:3px;align-items:center;gap:8px;padding:9px 15px;font-size:12px;transition:all .15s;display:inline-flex}.module-tabs button strong{font-family:var(--mono);color:var(--green);font-size:11px}.module-tabs button.active{background:var(--green);color:var(--paper-light);border-color:var(--green)}.module-tabs button.active strong{color:#f6b89e}.module-tabs button:hover:not(.active){border-color:var(--green);color:var(--ink)}.lesson-directory{padding:54px 0 46px}.lecture-cards{grid-template-columns:1fr 1fr;gap:24px;display:grid}.lecture-card{background:var(--paper-light);border:1px solid var(--line);border-radius:3px;flex-direction:column;padding:27px 28px 20px;transition:border-color .2s,transform .2s,box-shadow .2s;display:flex}.lecture-card:hover{border-color:var(--green);transform:translateY(-3px);box-shadow:0 12px 32px #16324f12}.lecture-card-top{align-items:center;gap:14px;margin-bottom:16px;display:flex}.lecture-number{color:var(--green);letter-spacing:-.04em;font-family:Georgia,serif;font-size:44px;line-height:1}.chapter-label{font-family:var(--mono);letter-spacing:.12em;color:var(--muted);font-size:10px}.part-pill{font-family:var(--mono);background:var(--soft);color:var(--green);border-radius:2px;padding:2px 7px;font-size:10px}.lecture-card-top>svg{color:var(--green);margin-left:auto}.lecture-card h3{font-family:var(--serif);font-size:24px;line-height:1.4}.lecture-card>p{color:var(--muted);min-height:44px;margin-top:8px;font-size:13px}.card-formula{color:var(--green);margin-top:auto;padding:22px 0;font-size:20px;overflow:auto}.lecture-card-bottom{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;align-items:center;gap:16px;padding-top:14px;font-size:11px;display:flex}.lecture-card-bottom>span:first-child{align-items:center;gap:5px;display:flex}.lecture-card-bottom>span:last-child{color:var(--green);margin-left:auto;font-weight:500}.convergence-matrix{background:var(--paper-light);border:1px solid var(--line);border-radius:4px;margin:12px 0 48px;padding:28px 30px}.convergence-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:18px;display:grid}.convergence-card{background:var(--paper);border-left:3px solid var(--green);border-radius:2px;padding:16px}.convergence-card.counter{border-left-color:var(--accent)}.convergence-card strong{color:var(--green);margin-bottom:6px;font-size:14px;display:block}.convergence-card p{color:var(--muted);font-size:12px;line-height:1.65}.home-search{border-top:1px solid var(--line);grid-template-columns:1fr 1.35fr;gap:56px;padding:46px 0 50px;display:grid}.home-search h2{margin:10px 0;font-size:28px}.home-search>div>p:last-child{color:var(--muted);font-size:13px}.search-field{background:var(--paper-light);min-height:48px;color:var(--muted);border:1px solid #b5c3d1;border-radius:3px;align-items:center;gap:11px;padding:0 15px;display:flex}.search-field input{width:100%;min-width:0;color:var(--ink);background:0 0;border:0;padding:12px 0;font-size:13px;outline:none!important}.search-field:focus-within{outline:2px solid var(--green);outline-offset:2px}.concept-links{flex-wrap:wrap;gap:9px;margin-top:16px;display:flex}.concept-links button{border:1px solid var(--line);background:var(--paper-light);border-radius:2px;gap:10px;padding:7px 12px;font-size:12px;display:flex}.concept-links button:hover{background:var(--soft);border-color:var(--green)}.concept-links span{color:var(--muted)}.search-results{max-height:420px;margin-top:16px;overflow-y:auto}.search-results>p{font-size:12px}.search-results>a{border-bottom:1px solid var(--line);padding:15px 0;display:block}.search-results>a>span{color:var(--accent);font-size:10px;font-family:var(--mono);display:block}.search-results>a>strong{margin:4px 0;font-size:14px;display:block}.search-results>a>p{color:var(--muted);font-size:12px}.reading-note{background:var(--soft);color:var(--green);border-radius:3px;gap:22px;margin-bottom:58px;padding:28px 30px;display:flex}.reading-note>svg{margin-top:5px}.reading-note h3{font-family:var(--serif);font-size:22px}.reading-note p{color:#3d5266;max-width:780px;margin:8px 0 13px;font-size:12px}.reading-note a{align-items:center;gap:10px;font-size:12px;font-weight:600;display:inline-flex}.reading-note-mark{opacity:.45;text-align:right;margin-left:auto;padding-left:20px;font-family:Georgia,serif;font-size:30px;line-height:1.4}.site-footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:20px;padding:23px 5%;font-size:11px;display:flex}.reader-header{z-index:30;background:var(--paper);border-bottom:1px solid var(--line);align-items:center;gap:26px;height:76px;padding:0 28px;display:flex;position:sticky;top:0}.reader-header .wordmark{width:236px}.reader-header .wordmark-symbol{font-size:35px}.reader-header .wordmark>span:last-child{font-size:16px}.reader-breadcrumb{color:var(--muted);align-items:center;gap:10px;font-size:12px;display:flex}.reader-breadcrumb>span:last-child{color:var(--ink);font-weight:500}.header-home{align-items:center;gap:8px;margin-left:auto;font-size:12px;display:flex}.mobile-menu{display:none}.reader-sidebar{border-right:1px solid var(--line);background:var(--paper);z-index:25;flex-direction:column;width:268px;padding:22px 18px 20px;display:flex;position:fixed;top:76px;bottom:0;left:0;overflow-y:auto}.sidebar-course{border-bottom:1px solid var(--line);padding-bottom:18px}.sidebar-course>.eyebrow{margin:0 8px 12px}.sidebar-course-list{scrollbar-width:thin;max-height:270px;padding-right:4px;overflow-y:auto}.sidebar-course-list>a{border-radius:3px;align-items:center;gap:10px;margin-bottom:2px;padding:7px 9px;font-size:12px;line-height:1.4;display:flex}.sidebar-course-list>a>span:first-child{font-family:var(--mono);color:var(--muted);flex-shrink:0;font-size:10px}.sidebar-course-list>a.selected{background:var(--soft);color:var(--green);font-weight:600}.sidebar-course-list>a:hover:not(.selected){background:#eceae2}.active-dot{background:var(--green);border-radius:50%;flex-shrink:0;width:5px;height:5px;margin-left:auto}.sidebar-chapters{padding-top:18px}.sidebar-chapters>.eyebrow{letter-spacing:.08em;justify-content:space-between;align-items:center;margin:0 8px 12px;display:flex}.sidebar-chapters>.eyebrow>span{letter-spacing:0;font-size:10px}.sidebar-chapters nav{flex-direction:column;gap:2px;display:flex}.sidebar-chapters button{text-align:left;width:100%;color:var(--muted);border-left:2px solid #0000;align-items:baseline;gap:9px;padding:7px 8px;font-size:11px;line-height:1.55;display:flex}.sidebar-chapters button.active{border-left-color:var(--accent);color:var(--green);background:var(--soft);font-weight:500}.sidebar-chapters button:hover{color:var(--green)}.chapter-num{font-family:var(--mono);flex:0 0 18px;font-size:9px}.sidebar-progress{margin-top:auto;padding:20px 8px 0;font-size:10px}.sidebar-progress>div{justify-content:space-between;gap:10px;display:flex}.sidebar-progress progress{background:var(--line);appearance:none;border:0;width:100%;height:3px;margin:8px 0;display:block}.sidebar-progress progress::-webkit-progress-bar{background:var(--line)}.sidebar-progress progress::-webkit-progress-value{background:var(--green)}.sidebar-progress small{color:var(--muted);font-size:9px;display:block}.reader-main{max-width:1180px;margin-left:268px;padding:0 clamp(28px,5vw,82px)}.lecture-hero{border-bottom:1px solid var(--line);padding:40px 0 26px}.lecture-eyebrow{flex-wrap:wrap;align-items:center;gap:18px;display:flex}.lecture-eyebrow>span:not(.eyebrow){color:var(--muted);font-size:11px;font-family:var(--mono);align-items:center;gap:5px;display:flex}.lecture-hero h1{margin:15px 0 6px;font-size:clamp(28px,3.3vw,42px);font-weight:600;line-height:1.35}.lecture-english{color:var(--muted);font-family:Georgia,serif;font-size:14px}.lecture-subtitle{color:#465869;margin-top:15px;font-size:15px}.lecture-parts-strip{flex-wrap:wrap;gap:8px;margin-top:18px;display:flex}.lecture-parts-strip button{font-size:11px;font-family:var(--mono);border:1px solid var(--line);background:var(--paper-light);color:var(--green);border-radius:3px;align-items:center;gap:6px;padding:6px 11px;display:inline-flex}.lecture-parts-strip button:hover{border-color:var(--green);background:var(--soft)}.lecture-hero-actions{flex-wrap:wrap;gap:24px;margin-top:16px;display:flex}.view-tabs{z-index:20;background:var(--paper);border-bottom:1px solid var(--line);white-space:nowrap;scrollbar-width:thin;gap:23px;display:flex;position:sticky;top:76px;overflow:auto}.view-tabs button{border-bottom:2px solid #0000;flex-shrink:0;padding:15px 0 13px;font-size:12px}.view-tabs button.selected{border-color:var(--green);color:var(--green);font-weight:600}.lesson-opening{padding:32px 0}.lesson-opening>.prose{margin-top:12px;font-size:15px}.objectives{background:var(--soft);border-radius:3px;margin-top:22px;padding:19px 22px;font-size:13px}.objectives>span{color:var(--green);font-size:12px;font-weight:600}.objectives ul{margin:10px 0 0;padding-left:20px}.objectives li{margin:4px 0;padding-left:3px}.objectives .prose p{margin:0}.lesson-section{border-top:1px solid var(--line);padding:34px 0 30px;scroll-margin-top:132px}.lesson-section-meta{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:15px;margin-bottom:14px;display:flex}.lesson-section-meta>span{font-family:var(--mono);letter-spacing:.1em;color:var(--muted);font-size:10px}.timestamp{font-family:var(--mono);color:var(--accent);white-space:nowrap;cursor:pointer;background:#f5ebe6;border:1px solid #e6cec2;border-radius:3px;align-items:center;gap:6px;padding:3px 8px;font-size:11px;transition:background .15s,border-color .15s,transform .1s;display:inline-flex}.timestamp:hover{border-color:var(--accent);background:#ebd8ce}.inline-timestamp{vertical-align:baseline;gap:4px;margin:0 2px;padding:1px 7px;font-size:11px;font-weight:600;line-height:1.4}.lesson-section>h2{margin-bottom:12px;font-size:26px;font-weight:600;line-height:1.45}.section-summary{color:var(--green);border-left:2px solid #6b88a4;margin:14px 0 22px;padding-left:15px;font-size:14px}.prose{overflow-wrap:anywhere;font-size:14px;line-height:1.95}.prose p{margin:12px 0}.prose h2,.prose h3{font-family:var(--sans);letter-spacing:0;color:var(--green);margin:24px 0 9px;font-size:16px;font-weight:600}.prose h4{margin-top:20px;font-size:14px}.prose strong{color:#122b44}.prose ul,.prose ol{margin:12px 0;padding-left:24px}.prose li{margin:5px 0;padding-left:2px}.prose blockquote{background:var(--soft);color:#243b53;border-left:3px solid #6d89a6;margin:18px 0;padding:4px 18px}.prose a{color:var(--accent);text-underline-offset:3px;text-decoration:underline}.prose table{border-collapse:collapse;width:100%;margin:18px 0;font-size:12px;display:block;overflow:auto}.prose th,.prose td{border-bottom:1px solid var(--line);text-align:left;padding:9px 12px}.prose code{font-family:var(--mono);background:var(--soft);border-radius:2px;padding:1px 5px;font-size:.86em}.katex-display{max-width:100%;margin:20px 0;padding:8px 0;overflow:auto hidden}.katex{font-size:1.07em}.display-formula{max-width:100%;display:block;overflow:hidden}.paradox-box{border-left:3px solid var(--accent);background:#fbf1ec;border-radius:2px;margin:22px 0;padding:16px 20px}.paradox-box>strong{color:var(--accent);letter-spacing:.04em;align-items:center;gap:7px;margin-bottom:6px;font-size:12px;display:flex}.paradox-box .prose{font-size:13px;line-height:1.85}.source-note{background:#edeae0;border-radius:2px;margin:20px 0;padding:14px 19px;font-size:12px}.source-note>strong{color:var(--muted);margin-bottom:4px;font-size:11px;display:block}.source-note .prose{font-size:12px;line-height:1.85}.source-note p:last-child{margin-bottom:0}.board-snapshot-card{background:var(--paper-light);border:1px solid var(--line);border-radius:4px;margin:22px 0;overflow:hidden}.board-snapshot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0;display:grid}.board-snapshot-card img{aspect-ratio:16/9;object-fit:cover;background:#0f1b26;width:100%;height:auto;display:block}.board-snapshot-meta{justify-content:space-between;align-items:center;gap:10px;padding:11px 14px;font-size:12px;display:flex}.board-snapshot-meta span{color:var(--muted);font-size:11px}.takeaways{border-top:1px dashed var(--line);margin-top:22px;padding-top:16px}.takeaways .eyebrow{color:var(--green);font-size:10px}.takeaways ul{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 22px;margin:8px 0 0;padding-left:18px;display:grid}.takeaways li{padding-left:4px}.takeaways .prose{color:#3d5266;font-size:12px}.takeaways .prose p{margin:5px 0}.review-check{color:var(--muted);cursor:pointer;align-items:center;gap:8px;margin-top:16px;padding:5px 0;font-size:11px;display:inline-flex}.review-check input{width:14px;height:14px}.experiment{border-top:1px solid #b5c4d3;margin:32px 0;padding-top:22px}.experiment-heading{align-items:flex-start;gap:16px;margin-bottom:18px;display:flex}.experiment-index{color:#7992ab;font-family:Georgia,serif;font-size:32px;line-height:1.2}.experiment-heading .eyebrow{color:var(--accent);font-size:9px}.experiment-heading h3{font-size:19px;font-family:var(--serif);margin:4px 0 6px}.experiment-heading p:last-child{color:var(--muted);font-size:12px}.experiment-heading>svg{color:var(--green);margin-top:6px;margin-left:auto}.end-of-lesson{background:var(--soft);border-radius:3px;margin:30px 0;padding:34px}.end-of-lesson h2{margin:10px 0;font-size:26px}.end-of-lesson>p:not(.eyebrow){color:var(--muted);margin-bottom:20px;font-size:13px}.view-intro{padding:30px 0 22px}.view-intro h2,.source-intro h2{margin:10px 0;font-size:28px}.view-intro>p:last-child{color:var(--muted);font-size:13px}.formula-index{background:var(--soft);border-radius:3px;margin:0 0 22px;padding:10px 24px}.formula-index>article{border-bottom:1px solid var(--line);padding:16px 0}.formula-index>article:last-child{border:0}.formula-index h3{color:var(--green);font-size:13px}.formula-index .katex-display{margin:12px 0}.formula-index .prose{font-size:12px}.quick-section{border-bottom:1px solid var(--line);gap:22px;padding:24px 0;display:flex}.quick-number{color:#7f95ab;font-family:Georgia,serif;font-size:26px;line-height:1.4}.quick-section>div{flex:1;min-width:0}.quick-section h3{font-size:18px;font-family:var(--serif)}.quick-section>div>p{color:var(--muted);margin-top:7px;font-size:13px}.quick-section ul{margin:10px 0;padding-left:19px}.quick-section .prose{font-size:12px}.quick-section .prose p{margin:6px 0}.labs-view>.experiment{margin-top:12px;margin-bottom:44px}.quiz-item{border-bottom:1px solid var(--line);padding:20px 0 30px}.quiz-item>.eyebrow{color:var(--accent)}.quiz-card>.prose{margin-bottom:14px;font-size:15px;font-weight:500}.quiz-option{border:1px solid var(--line);cursor:pointer;background:var(--paper-light);border-radius:3px;align-items:center;gap:12px;margin:8px 0;padding:11px 14px;display:flex}.quiz-option.selected{border-color:var(--green);background:var(--soft)}.quiz-option.correct{background:#e3f0e8;border-color:#3c7654}.quiz-option input{margin:0}.quiz-option .prose{flex:1;min-width:0;font-size:13px}.quiz-option .prose p{margin:0}.option-index{font-size:11px;font-family:var(--mono);color:var(--muted)}.quiz-card>.secondary-button{margin-top:14px}.quiz-feedback{background:#f5e8e2;border-radius:3px;margin-top:16px;padding:18px 20px}.quiz-feedback.correct{background:var(--soft)}.quiz-feedback>strong{margin-bottom:6px;font-size:13px;display:block}.quiz-feedback .prose{font-size:13px}.feedback-actions{flex-wrap:wrap;gap:20px;margin-top:14px;display:flex}.feedback-actions button{text-underline-offset:4px;color:var(--green);padding:2px 0;font-size:12px;text-decoration:underline}.source-intro{padding:30px 0}.source-intro>p:last-of-type{color:var(--muted);margin:12px 0 20px;font-size:13px}.book-references{border-top:1px solid var(--line);padding-top:24px}.book-references>h3{align-items:center;gap:9px;font-size:18px;display:flex}.book-references>p{margin:9px 0 18px;font-size:12px}.book-reference{border-bottom:1px solid var(--line);align-items:flex-start;gap:17px;padding:16px 0;display:flex}.book-section{color:var(--green);min-width:58px;font-family:Georgia,serif;font-size:22px}.book-reference>div{flex:1;min-width:0}.book-reference strong{font-size:13px}.book-reference p{color:var(--muted);margin:5px 0;font-size:12px}.book-reference small{color:var(--accent);font-size:10px;font-family:var(--mono)}.coverage-details{border-bottom:1px solid var(--line);padding:22px 0;font-size:13px}.coverage-details>p{margin-bottom:16px;font-size:11px}.table-scroll{overflow:auto}.table-scroll table{border-collapse:collapse;width:100%;font-size:11px}.table-scroll th,.table-scroll td{border-bottom:1px solid var(--line);text-align:left;padding:9px 12px 9px 0;font-weight:400}.table-scroll th{color:var(--muted)}.transcript{padding:26px 0}.transcript>.section-heading{align-items:center;margin-bottom:16px}.transcript h3{font-size:18px}.transcript .section-heading>span{font-size:11px}.transcript-part-filter{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.transcript-part-filter button{font-size:11px;font-family:var(--mono);border:1px solid var(--line);background:var(--paper-light);border-radius:3px;padding:5px 10px}.transcript-part-filter button.active{background:var(--green);color:var(--paper-light);border-color:var(--green)}.transcript-list{margin:14px 0 20px}.transcript-cue{border-bottom:1px solid var(--line);text-align:left;border-radius:2px;align-items:flex-start;gap:18px;width:100%;padding:13px 8px;display:flex}.transcript-cue:hover{background:var(--soft)}.cue-time{font-family:var(--mono);color:var(--accent);flex-shrink:0;align-items:center;gap:6px;min-width:96px;padding-top:3px;font-size:10px;display:flex}.cue-zh{font-size:13px;line-height:1.7;display:block}.glossary{border-top:1px solid var(--line);margin-top:22px;padding:22px 0;font-size:13px}.glossary dl{margin:0}.glossary dl>div{border-bottom:1px solid var(--line);padding:14px 0}.glossary dt{color:var(--green);font-weight:600}.glossary dt>span{color:var(--muted);margin-left:12px;font-family:Georgia,serif;font-size:12px;font-weight:400}.glossary dd{margin:4px 0 0}.glossary .prose{font-size:12px}.next-lesson{border-top:1px solid var(--line);justify-content:space-between;gap:20px;margin:28px 0 0;padding:26px 0;display:flex}.next-lesson>a:last-child{text-align:right}.next-lesson span{color:var(--muted);margin-bottom:4px;font-size:10px;display:block}.next-lesson strong{font-family:var(--serif);font-size:19px;font-weight:500}.reader-footer{color:var(--muted);border-top:1px solid var(--line);padding:15px 0 30px;font-size:10px}.video-dialog{border:1px solid var(--line);background:var(--paper);width:min(980px,94vw);max-height:92vh;color:var(--ink);border-radius:4px;padding:0;box-shadow:0 30px 100px #10233652}.video-dialog::backdrop{background:#102030b8}.video-dialog-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;padding:16px 22px;display:flex}.video-dialog-header h3{margin-top:3px;font-size:16px}.video-dialog-header .eyebrow{font-size:9px}.video-parts-bar{background:var(--soft);border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:6px;padding:10px 22px;display:flex}.video-parts-bar>span{font-family:var(--mono);color:var(--muted);margin-right:6px;font-size:10px}.video-parts-bar button{font-size:11px;font-family:var(--mono);border:1px solid var(--line);background:var(--paper-light);color:var(--ink);border-radius:3px;padding:5px 10px}.video-parts-bar button.active{background:var(--green);color:var(--paper-light);border-color:var(--green);font-weight:600}.video-dialog video{background:#0d1824;width:100%;max-height:62vh;display:block}.video-controls{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:15px;padding:12px 22px 4px;font-size:12px;display:flex}.video-controls select{border:1px solid var(--line);background:var(--paper-light);margin-left:6px;padding:4px 8px;font-size:12px}.video-hint{color:var(--muted);padding:6px 22px 16px;font-size:11px}@media (width>=1700px){.reader-main{margin-left:calc(33.3333vw - 298.667px)}}@media (width<=1100px){.site-header .edition{display:none}.home-hero{gap:22px}.home-hero h1{font-size:36px}.convergence-grid{grid-template-columns:repeat(2,1fr)}.reader-sidebar{width:232px;padding-inline:14px}.reader-header .wordmark{width:194px}.reader-main{margin-left:232px;padding-inline:32px}.lecture-card{padding:22px}.home-search{gap:32px}}@media (width<=800px){.site-header{height:76px;padding-inline:22px}.home-main{padding-inline:22px}.home-hero{grid-template-columns:1fr;padding:38px 0}.lecture-cards{grid-template-columns:1fr;gap:16px}.home-search{grid-template-columns:1fr;gap:22px}.reader-header{gap:14px;height:68px;padding-inline:18px}.reader-header .wordmark{width:auto}.reader-breadcrumb{margin-left:auto}.header-home{display:none}.mobile-menu{display:flex}.reader-sidebar{width:min(340px,90vw);display:none;position:fixed;top:68px;box-shadow:15px 5px 35px #1023362e}.reader-sidebar.open{display:flex}.reader-main{max-width:880px;margin-left:0;padding:0 24px}.view-tabs{gap:20px;top:68px}.board-snapshot-grid{grid-template-columns:1fr}}@media (width<=520px){body{font-size:14px}.convergence-grid{grid-template-columns:1fr}.reader-main{padding-inline:18px}.lecture-hero h1{font-size:28px}}.formula-ribbon{background:var(--paper-light);border:1px solid var(--line);border-top:3px solid var(--green);border-radius:4px;margin:12px 0 28px;padding:18px 22px}.formula-ribbon-head{margin-bottom:14px}.formula-ribbon-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 20px;display:grid}.formula-ribbon-card{background:var(--paper);border:1px solid #dce3eb;border-radius:3px;padding:12px 15px}.formula-ribbon-card h3{color:var(--green);margin-bottom:6px;font-size:13px;font-weight:600}.formula-ribbon-card .katex-display{margin:8px 0;padding:4px 0}.formula-ribbon-card .prose{color:#3d5266;font-size:12px;line-height:1.65}.formula-ribbon-card .prose p{margin:4px 0}.board-diagram-box{border:1px solid #c5d1de;border-top:3px solid var(--green);background:#fdfcf9;border-radius:6px;margin:24px 0;padding:18px 22px 20px;box-shadow:0 8px 24px #16324f0d}.board-diagram-head{border-bottom:1px dashed #cbd6e2;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:6px 16px;margin-bottom:14px;padding-bottom:10px;display:flex}.board-diagram-head h4{font-family:var(--serif);color:var(--green);margin:3px 0 0;font-size:16.5px;font-weight:600}.board-diagram-caption{color:var(--muted);width:100%;margin-top:2px;font-size:12.5px;line-height:1.65;display:block}.board-diagram-split{flex-direction:column;gap:14px;display:flex}.board-diagram-svg{background:#fff;border:1px solid #dce4ed;border-radius:5px;padding:8px 10px}.board-diagram-single .board-diagram-svg>svg,.board-diagram-split .board-diagram-svg>svg{width:100%;height:auto;max-height:370px;margin:0 auto;display:block}.board-diagram-notes{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.board-diagram-note-item{border:1px solid #dfd8c8;border-top:2.5px solid var(--accent);background:#f6f3eb;border-radius:4px;padding:11px 14px}.board-diagram-note-item .prose{color:#1e293b;font-size:12.5px;line-height:1.68}.board-diagram-note-item .prose p{margin:2px 0}.board-diagram-note-item .katex-display{margin:6px 0 2px;font-size:.94em}@media (width<=960px){.board-diagram-notes{grid-template-columns:1fr}}.board-derivation-box{border:1px solid #cbd6e2;border-left:3px solid var(--green);background:#fdfcf8;border-radius:4px;margin:20px 0;padding:16px 20px}.board-derivation-head{border-bottom:1px dashed #cbd6e2;margin-bottom:12px;padding-bottom:10px}.board-steps-list{grid-template-columns:repeat(auto-fit,minmax(275px,1fr));align-items:stretch;gap:12px;display:grid}.board-step-item{background:#f5f3ec;border:1px solid #e2ddd0;border-radius:4px;flex-direction:column;padding:11px 14px;display:flex}.prose details.example-box{border:1px solid #cbd5e1;border-left:3px solid var(--green);background:#f5f7fa;border-radius:4px;margin:14px 0;padding:10px 16px}.prose details.example-box>summary{color:var(--green);cursor:pointer;margin-bottom:0;font-size:13.5px;font-weight:600}.prose details.example-box[open]>summary{border-bottom:1px dashed #cbd5e1;margin-bottom:8px;padding-bottom:6px}.board-step-title{align-items:center;gap:10px;margin-bottom:6px;display:flex}.board-step-badge{font-family:var(--mono);background:var(--green);color:#fff;border-radius:2px;padding:2px 7px;font-size:10.5px;font-weight:600}.board-step-item .katex-display{margin:8px 0;padding:4px 0}.board-step-item .prose{color:#2f4358;font-size:12.5px;line-height:1.7}.board-step-item .prose p{margin:4px 0}.quiz-grid-2{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;display:grid}.quiz-grid-2 .quiz-item{background:var(--paper-light);border:1px solid var(--line);border-radius:4px;padding:16px 18px}@media (width<=900px){.formula-ribbon-grid,.quiz-grid-2{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition:none!important;animation:none!important}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/digital-ic/_astro/KaTeX_AMS-Regular.BQhdFMY1.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_AMS-Regular.DMm9YOAa.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Caligraphic-Bold.Dq_IR9rO.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Caligraphic-Bold.BEiXGLvX.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Caligraphic-Regular.Di6jR-x-.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Caligraphic-Regular.CTRA-rTL.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Fraktur-Bold.CL6g_b3V.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Fraktur-Bold.BsDP51OF.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Fraktur-Regular.CTYiF6lA.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Fraktur-Regular.Dxdc4cR9.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Main-Bold.Cx986IdX.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Main-Bold.Jm3AIy58.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Main-BoldItalic.DxDJ3AOS.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Main-BoldItalic.SpSLRI95.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Main-Italic.NWA7e6Wa.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Main-Italic.BMLOBm91.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Main-Regular.B22Nviop.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Main-Regular.Dr94JaBh.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Math-BoldItalic.CZnvNsCZ.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Math-BoldItalic.iY-2wyZ7.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Math-Italic.t53AETM-.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Math-Italic.DA0__PXp.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_SansSerif-Bold.D1sUS0GD.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_SansSerif-Bold.DbIhKOiC.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_SansSerif-Italic.C3H0VqGB.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_SansSerif-Italic.DN2j7dab.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_SansSerif-Regular.DDBCnlJ7.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_SansSerif-Regular.CS6fqUqJ.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Script-Regular.D3wIWfF6.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Script-Regular.D5yQViql.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Size1-Regular.mCD8mA8B.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Size1-Regular.C195tn64.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Size2-Regular.Dy4dx90m.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Size2-Regular.oD1tc_U0.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Size3-Regular.CTq5MqoE.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Size4-Regular.Dl5lxZxV.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Size4-Regular.BF-4gkZK.woff)format("woff"),url(/digital-ic/_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(/digital-ic/_astro/KaTeX_Typewriter-Regular.CO6r4hn1.woff2)format("woff2"),url(/digital-ic/_astro/KaTeX_Typewriter-Regular.C0xS9mPB.woff)format("woff"),url(/digital-ic/_astro/KaTeX_Typewriter-Regular.D3Ib7_Hf.ttf)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.16.47"}.katex .katex-mathml{-webkit-clip-path:inset(50%);clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.newline{display:block}.katex .base{white-space:nowrap;width:min-content;position:relative}.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;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{flex-direction:row;display:inline-flex}.katex .thinbox{width:0;max-width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .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{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.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;width:100%;display:inline-block}.katex .hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.root{margin-left:.277778em;margin-right:-.555556em}.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:.833333em}.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:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.33333em}.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:1.66667em}.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:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.857143em}.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:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.55429em}.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:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.888889em}.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:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.33333em}.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:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.76444em}.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:.416667em}.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:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.666667em}.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:.833333em}.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:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.555556em}.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:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.833333em}.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:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.833333em}.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:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.833173em}.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:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.833601em}.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{width:.12em;display:inline-block}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .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{min-width:1px;display:inline-block}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}
