.lec-panel{max-width:900px}.lec-add{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);margin:12px 0 20px;padding:16px}.lec-series{margin-top:20px}.lec-series-head{border-bottom:1px solid var(--grid);flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:12px;padding-bottom:8px;display:flex}.lec-list{margin:0;padding:0;list-style:none}.lec-row{border:none;border-bottom:1px solid var(--grid);text-align:left;cursor:pointer;background:0 0;grid-template-columns:28px minmax(0,1fr);align-items:start;gap:10px;width:100%;padding:10px 8px;display:grid}.lec-row:hover{background:var(--surface-2)}.lec-no{color:var(--muted);text-align:right;font-variant-numeric:tabular-nums;padding-top:1px;font-size:.85rem}.lec-row-main{flex-direction:column;gap:4px;min-width:0;display:flex}.lec-row-title{font-size:.95rem}.lec-done{color:var(--good-text);font-weight:700}.lec-row-meta{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.lec-chip{background:var(--surface-2);color:var(--text-2);white-space:nowrap;border-radius:999px;align-items:center;gap:4px;padding:0 8px;font-size:.76rem;line-height:1.7;display:inline-flex}.lec-chip .spinner{width:9px;height:9px}.lec-chip-good{color:var(--good-text);background:color-mix(in srgb, var(--good) 13%, transparent)}.lec-chip-busy{color:var(--accent);background:var(--accent-soft)}.lec-chip-bad{color:var(--critical);background:color-mix(in srgb, var(--critical) 11%, transparent)}.lec-watch{background:var(--grid);border-radius:2px;width:90px;height:4px;display:inline-block;overflow:hidden}.lec-watch span{background:var(--series-1);height:100%;display:block}.lec-page{flex-direction:column;height:calc(100vh - 56px);min-height:0;display:flex}.lec-head{border-bottom:1px solid var(--border);background:var(--surface);flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:12px;padding:12px 20px;display:flex}.lec-head-main{flex-direction:column;flex:360px;gap:2px;min-width:0;display:flex}.lec-head h1{text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:1.15rem;overflow:hidden}.lec-head a{text-decoration:none}.lec-head-actions{flex-wrap:wrap;gap:6px;display:flex}.btn.disabled{opacity:.5;pointer-events:none}.lec-body{flex:1;grid-template-columns:minmax(0,1.35fr) minmax(380px,1fr);min-height:0;display:grid}.lec-left{flex-direction:column;gap:14px;min-width:0;padding:16px 20px;display:flex;overflow-y:auto}.lec-right{border-left:1px solid var(--border);background:var(--surface);flex-direction:column;min-width:0;min-height:0;display:flex}.lec-right .tabs{padding:6px 12px 0}.lec-right .tabs button{padding:10px}.lec-tabbody{flex:1;min-height:0;padding:16px 18px 24px;overflow-y:auto}.lec-tabbody.is-chat{padding:0;overflow:hidden}.lec-tabbody.is-script{flex-direction:column;display:flex;overflow:hidden}.lec-video{aspect-ratio:16/9;border-radius:var(--radius);background:#000;width:100%;position:relative;overflow:hidden}.lec-player,.lec-player>div,.lec-player iframe{border:0;width:100%;height:100%;position:absolute;inset:0}.lec-player-error{text-align:center;color:#f0efec;background:#000000c7;flex-direction:column;justify-content:center;align-items:center;gap:10px;padding:16px;display:flex;position:absolute;inset:0}.lec-nowbar{display:none}.lec-now-badge{color:var(--on-accent);background:var(--accent);border-radius:999px;flex:none;padding:0 7px;font-size:.72rem;font-weight:700;line-height:1.7}.lec-secbar{background:var(--accent-soft);border-radius:2px;height:3px;display:block;overflow:hidden}.lec-secbar>span{background:var(--accent);width:0;height:100%;transition:width .25s linear;display:block}.lec-nowcard{border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;background:var(--surface);flex-direction:column;gap:8px;padding:14px 16px;display:flex}.lec-nowcard-head{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.lec-nowcard ul,.lec-section ul{margin:0;padding-left:20px}.lec-nowcard li .md p,.lec-section li .md p,.lec-checks li .md p{margin:0}.lec-time{border:1px solid var(--border);background:var(--surface-2);color:var(--accent);font-variant-numeric:tabular-nums;cursor:pointer;border-radius:6px;flex:none;padding:0 7px;font-size:.8rem;line-height:1.7}.lec-time:hover{border-color:var(--accent)}.lec-state{border-radius:var(--radius);background:var(--surface-2);color:var(--text-2);flex-direction:column;align-items:flex-start;gap:8px;margin-bottom:14px;padding:14px 16px;display:flex}.lec-state p{margin:0}.lec-state-bad{color:var(--critical);background:color-mix(in srgb, var(--critical) 8%, transparent)}.lec-state-quota{color:var(--text-1);background:color-mix(in srgb, var(--warning) 18%, transparent);border:1px solid color-mix(in srgb, var(--warning) 45%, transparent);border-radius:var(--radius);padding:10px 12px}.lec-sections{flex-direction:column;gap:8px;margin:14px 0;padding:0;list-style:none;display:flex}.lec-section{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);flex-direction:column;gap:6px;padding:10px 12px;transition:border-color .2s,background .2s;display:flex}.lec-section.now{border-color:var(--accent);background:var(--accent-soft)}.lec-section-head{align-items:center;gap:8px;display:flex}.lec-section-foot{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.lec-section-foot .link-btn{margin-left:auto}.lec-kw{color:var(--text-2);background:var(--surface-2);border-radius:999px;padding:0 7px;font-size:.76rem;line-height:1.7}.lec-section.now .lec-kw{background:var(--surface)}.lec-box{margin:14px 0}.lec-box h3{color:var(--text-1);font-size:.95rem}.lec-checks{border-radius:var(--radius);background:color-mix(in srgb, var(--warning) 12%, transparent);padding:12px 14px}.lec-checks ul{margin:0;padding-left:20px}.lec-timeline{border-left:2px solid var(--grid);margin:0;padding:0 0 0 14px;list-style:none}.lec-timeline li{grid-template-columns:minmax(70px,auto) 1fr;gap:10px;padding:5px 0 5px 6px;display:grid;position:relative}.lec-timeline li:before{content:"";background:var(--series-1);width:10px;height:10px;box-shadow:0 0 0 2px var(--surface);border-radius:50%;position:absolute;top:12px;left:-20px}.lec-tl-when{font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:600}.lec-tl-event{color:var(--text-2)}.lec-script-wrap{flex-direction:column;flex:1;gap:8px;min-height:0;padding:12px 14px 8px;display:flex}.lec-script-wrap>p{margin:0}.lec-script-bar{justify-content:space-between;align-items:center;gap:8px;min-height:30px;display:flex}.lec-script{flex-direction:column;flex:1;gap:2px;min-height:0;padding-right:4px;display:flex;position:relative;overflow-y:auto}.lec-cue{text-align:left;cursor:pointer;color:var(--text-1);background:0 0;border:none;border-radius:8px;grid-template-columns:48px minmax(0,1fr);gap:8px;padding:6px 8px;display:grid}.lec-cue:hover{background:var(--surface-2)}.lec-cue.past{color:var(--text-2)}.lec-cue.now{background:var(--accent-soft);color:var(--text-1);font-weight:600}.lec-cue-time{color:var(--muted);font-variant-numeric:tabular-nums;padding-top:2px;font-size:.78rem}.lec-cue.now .lec-cue-time{color:var(--accent)}.lec-cue.has-terms .lec-cue-time{text-align:left;cursor:pointer;background:0 0;border:0;align-self:start;margin:0;padding:2px 0 0}.lec-cue-time:focus-visible,.lec-term:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}.lec-term{--key-ink:var(--text-1);--mark-h:64%;color:inherit;font:inherit;cursor:help;-webkit-text-decoration:underline dotted color-mix(in srgb, currentColor 50%, transparent);text-decoration:underline dotted color-mix(in srgb, currentColor 50%, transparent);text-underline-offset:.24em;background:0 0;border:0;border-radius:.3em .7em .35em .8em;margin:0 -.02em;padding:0 .12em;display:inline}.lec-cue.now .lec-term,.lec-cue.past .lec-term{background-image:linear-gradient(100deg,#ffe60000 0%,#ffe6009e 2.5%,#ffe20075 48%,#ffe60099 97%,#ffe60000 100%);background-repeat:no-repeat;background-size:100% var(--mark-h);background-position:0 90%;text-decoration:none}.lec-cue.now .lec-term{color:var(--key-ink);animation:.7s ease-out both lec-chalk-in}@keyframes lec-chalk-in{0%{background-size:0% var(--mark-h)}to{background-size:100% var(--mark-h)}}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .lec-term{--key-ink:#ffe9a3;--mark-h:.62em}:root:not([data-theme=light]) .lec-cue.now .lec-term,:root:not([data-theme=light]) .lec-cue.past .lec-term{background-color:#ffe58f21;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 14' preserveAspectRatio='none'%3E%3Cfilter id='c' x='-5%25' y='-60%25' width='110%25' height='220%25'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='4' result='n'/%3E%3CfeDisplacementMap in='SourceGraphic' in2='n' scale='2.4' result='d'/%3E%3CfeTurbulence type='fractalNoise' baseFrequency='2.4' seed='9' result='g'/%3E%3CfeColorMatrix in='g' type='matrix' values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -2 1.7' result='m'/%3E%3CfeComposite in='d' in2='m' operator='in'/%3E%3C/filter%3E%3Cg fill='none' stroke='%23ffe58f' stroke-linecap='round' filter='url(%23c)'%3E%3Cpath d='M3 8 C 32 5.5, 70 9.5, 117 6' stroke-width='4.2' opacity='1'/%3E%3Cpath d='M8 10.6 C 44 9, 82 11.4, 112 9.4' stroke-width='1.8' opacity='.6'/%3E%3C/g%3E%3C/svg%3E");background-position:0 100%;border-radius:0;padding:0 .06em .12em}}:root[data-theme=dark] .lec-term{--key-ink:#ffe9a3;--mark-h:.62em}:root[data-theme=dark] .lec-cue.now .lec-term,:root[data-theme=dark] .lec-cue.past .lec-term{background-color:#ffe58f21;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 14' preserveAspectRatio='none'%3E%3Cfilter id='c' x='-5%25' y='-60%25' width='110%25' height='220%25'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='4' result='n'/%3E%3CfeDisplacementMap in='SourceGraphic' in2='n' scale='2.4' result='d'/%3E%3CfeTurbulence type='fractalNoise' baseFrequency='2.4' seed='9' result='g'/%3E%3CfeColorMatrix in='g' type='matrix' values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -2 1.7' result='m'/%3E%3CfeComposite in='d' in2='m' operator='in'/%3E%3C/filter%3E%3Cg fill='none' stroke='%23ffe58f' stroke-linecap='round' filter='url(%23c)'%3E%3Cpath d='M3 8 C 32 5.5, 70 9.5, 117 6' stroke-width='4.2' opacity='1'/%3E%3Cpath d='M8 10.6 C 44 9, 82 11.4, 112 9.4' stroke-width='1.8' opacity='.6'/%3E%3C/g%3E%3C/svg%3E");background-position:0 100%;border-radius:0;padding:0 .06em .12em}@media (prefers-reduced-motion:reduce){.lec-cue.now .lec-term{animation:none}}.lec-term-tip{z-index:70;border:1px solid var(--border);background:var(--surface);width:max-content;max-width:min(320px,100vw - 32px);max-height:min(50vh,320px);color:var(--text-1);word-break:keep-all;overflow-wrap:anywhere;border-radius:10px;padding:10px 12px;font-size:.88rem;font-weight:400;line-height:1.55;position:fixed;overflow:auto;box-shadow:0 8px 24px #0000002e}.lec-term-tip strong{margin-bottom:2px;display:block}.lec-term-tip .md p{margin:.2em 0 0}@media (forced-colors:active){.lec-cue.now .lec-term,.lec-cue.past .lec-term{background:0 0;text-decoration:underline}.lec-term-tip{border-color:canvastext}}.lec-chat{height:100%}.lec-chat .chat{grid-template-rows:auto minmax(0,1fr);grid-template-columns:minmax(0,1fr)}.lec-chat .chat-side{border-right:none;border-bottom:1px solid var(--border);flex-direction:row;align-items:center;padding:8px 12px;overflow-x:auto}.lec-chat .chat-side .btn{white-space:nowrap}.lec-chat .conv-list{gap:4px;display:flex}.lec-chat .conv-item{width:150px}.lec-chat .messages{padding:14px}.lec-chat .composer{padding:10px 14px 12px}.lec-chat .msg-user{max-width:88%}.lec-mnemonics{gap:10px;margin-bottom:20px;display:grid}.lec-mnemonic{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);flex-direction:column;gap:4px;padding:14px 16px;display:flex}.lec-mnemonic .md p{color:var(--text-2);margin:0;font-size:.92rem}.lec-device{letter-spacing:-.01em;font-size:1.25rem}.lec-mnemonic .note-actions{flex-wrap:wrap;align-items:center;margin-top:6px}.lec-terms .note-head{margin-bottom:0}.lec-termgrid{grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:8px;display:grid}.lec-termcard{border:1px solid var(--border);border-radius:var(--radius);background:var(--surface-2);text-align:left;cursor:pointer;flex-direction:column;gap:4px;min-height:76px;padding:10px 12px;display:flex}.lec-termcard.open{background:var(--surface);border-color:var(--accent)}.lec-termcard .md p{color:var(--text-2);margin:0;font-size:.88rem}.print-wrap{background:var(--surface-2);min-height:100vh;padding:16px}.print-toolbar{flex-wrap:wrap;align-items:center;gap:12px;max-width:210mm;margin:0 auto 12px;display:flex}.print-toolbar .muted{flex:240px}.print-page{--surface:#fff;--surface-2:#f3f2ee;--border:#00000024;--text-1:#111;--text-2:#3f3e3b;--muted:#6b6a66;--grid:#e1e0d9;--baseline:#c3c2b7;--accent:#2a78d6;--accent-soft:#e6f0fc;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;color:#111;background:#fff;max-width:210mm;margin:0 auto;padding:16mm 15mm;font-size:10.5pt;line-height:1.55;box-shadow:0 2px 12px #0000001f}.print-head{border-bottom:2px solid #111;margin-bottom:14px;padding-bottom:10px}.print-kicker{letter-spacing:.08em;color:var(--accent);font-size:9pt;font-weight:700}.print-head h1{margin:4px 0;font-size:18pt}.print-meta{color:var(--muted);margin:0;font-size:9pt}.print-section{margin:14px 0}.print-section h2{border-left:4px solid var(--accent);margin:0 0 6px;padding-left:8px;font-size:12.5pt}.print-section h3{color:#111;font-size:11pt}.print-sections,.print-questions,.print-answers ol{margin:0;padding:0;list-style:none}.print-sections{gap:6px;display:grid}.print-card{border:1px solid var(--border);break-inside:avoid;page-break-inside:avoid;border-radius:6px;padding:8px 10px}.print-card ul{margin:4px 0 0;padding-left:18px}.print-card .md p,.print-card li .md p{margin:0}.print-card-head{align-items:baseline;gap:8px;display:flex}.print-time{font-variant-numeric:tabular-nums;color:var(--accent);font-size:9pt}.print-kw{color:var(--muted);margin:4px 0 0;font-size:9pt}.print-checks{background:#fff8e6}.print-checks ul{margin:0;padding-left:18px}.print-table{border-collapse:collapse;width:100%;font-size:10pt}.print-table th,.print-table td{border-bottom:1px solid var(--grid);text-align:left;vertical-align:top;padding:4px 8px}.print-table th{white-space:nowrap;width:28%}.print-table td .md p{margin:0}.print-mnemonics,.print-concepts{grid-template-columns:1fr 1fr;gap:6px;display:grid}.print-device{margin:2px 0;font-size:12pt;display:block}.print-quiz{break-before:page;page-break-before:always}.print-questions>li{counter-increment:pq;break-inside:avoid;page-break-inside:avoid;margin-bottom:12px}.print-questions{counter-reset:pq}.print-questions>li>.md:before{content:counter(pq) ". ";float:left;margin-right:4px;font-weight:700}.print-choices{margin:4px 0 0;padding-left:16px;list-style:none}.print-choices li{align-items:baseline;gap:6px;display:flex}.print-choices .md p{margin:0}.print-answers{break-before:page;page-break-before:always}.print-answers li{break-inside:avoid;page-break-inside:avoid;margin-bottom:8px}.print-answers .md p{margin:2px 0 0}.print-avoid{break-inside:avoid;page-break-inside:avoid}.print-page .viz{border:none;padding:0}.print-page .mermaid-out svg{width:auto;max-width:100%;max-height:150mm;margin:0 auto;display:block}.print-foot{border-top:1px solid var(--grid);color:var(--muted);margin-top:18px;padding-top:8px;font-size:8.5pt}@media (prefers-color-scheme:dark){.print-page .mermaid-out svg{filter:invert()hue-rotate(180deg)}}@media print{@page{size:A4;margin:14mm}html,body{background:#fff!important}.print-toolbar,.topbar,.tabbar,.notice-bar{display:none!important}.print-wrap{background:#fff;padding:0}.print-page{max-width:none;box-shadow:none;padding:0}.print-page *{-webkit-print-color-adjust:exact;print-color-adjust:exact}}@media (width<=1100px){.lec-page{height:auto}.lec-body{grid-template-columns:minmax(0,1fr)}.lec-left{padding:12px 16px 0;overflow:visible}.lec-stage{width:100%;max-width:760px;margin:0 auto}.lec-nowcard{display:none}.lec-nowbar{border:1px solid var(--border);background:var(--surface);text-align:left;cursor:pointer;border-radius:8px;flex-wrap:wrap;align-items:center;gap:4px 8px;width:100%;margin-top:6px;padding:6px 10px;display:flex}.lec-nowbar-title{text-overflow:ellipsis;white-space:nowrap;flex:1;min-width:0;font-size:.9rem;overflow:hidden}.lec-nowbar .lec-secbar{flex-basis:100%}.lec-right{border-left:none;border-top:1px solid var(--border);margin-top:12px}.lec-tabbody{padding:16px;overflow:visible}.lec-tabbody.is-chat,.lec-tabbody.is-script{overflow:visible}.lec-chat{height:72vh}.lec-script{max-height:58vh}}@media (width<=860px){.lec-left{display:contents}.lec-stage{top:calc(56px + env(safe-area-inset-top));z-index:6;background:var(--page);padding:0 0 8px;position:sticky}.lec-video{border-radius:0}.lec-nowbar{width:calc(100% - 24px);margin:6px 12px 0}.lec-right{margin-top:0}.lec-head{padding:10px 16px}.lec-head h1{white-space:normal;font-size:1.05rem}.lec-script{max-height:46vh}.lec-chat{height:64vh}.lec-watch{width:64px}.print-wrap{padding:8px}.print-page{padding:14px 12px}.print-mnemonics,.print-concepts{grid-template-columns:minmax(0,1fr)}.lec-head-actions{scrollbar-width:none;flex-wrap:nowrap;margin:0 -16px;padding:0 16px 2px;overflow-x:auto}.lec-head-actions::-webkit-scrollbar{display:none}.lec-head-actions .btn{flex:none}}.lec-series-head .lec-chip{margin-left:6px}.lec-source{margin:4px 0 0;line-height:1.6}@media (width<=860px){.lec-source{padding:12px 16px calc(16px + env(safe-area-inset-bottom));order:9}}.caption-toolbar,.caption-range{flex-wrap:wrap;align-items:center;gap:12px;margin-bottom:12px;display:flex}.caption-toolbar label,.caption-review label{font-size:13px}.caption-toolbar select,.caption-review select{border:1px solid var(--line,#ccc);background:var(--panel,#fff);max-width:100%;color:inherit;border-radius:6px;padding:6px}.caption-alternate{opacity:.8;margin-top:5px;font-weight:400;display:block}.caption-issue{color:var(--muted,#777);margin-top:3px;font-size:12px;font-weight:400;display:block}.caption-review{border-block:1px solid var(--line,#ddd);margin:12px 0;padding:12px 0}.caption-review summary{cursor:pointer}.caption-review textarea{box-sizing:border-box;width:100%;margin-block:8px;display:block}.caption-check{margin-block:10px;display:block}.caption-range label{flex:180px;min-width:0}.caption-range select{width:100%}.caption-jobs{overflow-wrap:anywhere;padding-left:20px}.caption-review .btn{margin:5px 5px 5px 0}@media (width<=600px){.caption-toolbar select,.caption-review select,.caption-review textarea,.caption-review input:not([type=checkbox]){font-size:16px}}.exam-paper{color:#151515;background:#fff;max-width:210mm;margin:0 auto;padding:16mm 17mm;box-shadow:0 1px 8px #0002}.exam-paper-head{border-bottom:2px solid #172c4e;margin-bottom:8mm;padding-bottom:7mm}.exam-paper-head p{letter-spacing:.14em;color:#277660;margin:0;font-size:9pt;font-weight:700}.exam-paper-head h1{margin:3mm 0;font-size:24pt}.exam-paper-head span{color:#555;font-size:10pt}.exam-unit{break-inside:avoid;margin:0 0 10mm}.exam-unit h2{border-bottom:1px solid #b9c2cb;padding:2mm 0;font-size:15pt}.exam-question{break-inside:avoid;margin:0 0 6mm;font-size:11.5pt;line-height:1.65}.exam-question>div{gap:2mm;display:flex}.exam-question .md{display:inline}.exam-question .md p{margin:0}.exam-question ol{margin:2mm 0 0 8mm;padding-left:5mm;list-style-type:upper-alpha}.exam-question li{padding:1mm 0}.exam-question li .md{display:inline}.exam-question li .md p{margin:0;display:inline}.exam-answers{break-before:page;border-top:2px solid #172c4e;padding-top:7mm}.exam-answers h2{font-size:18pt}.exam-answers h3{margin-top:7mm;font-size:13pt}.exam-answers p{margin:2mm 0;font-size:10.5pt}.exam-empty{color:#555;min-height:80mm;padding:12mm 0}@media print{.exam-print-wrap .print-toolbar{display:none}.exam-paper{box-shadow:none;max-width:none;margin:0;padding:0}.exam-unit{break-inside:avoid}.exam-answers{break-before:page}}@media (width<=700px){.exam-paper{padding:9mm 7mm}.exam-paper-head h1{font-size:19pt}.exam-question{font-size:10.5pt}}