:root{color-scheme:dark;--am-bg:#090a0b;--am-panel:#101113;--am-inset:#0b0c0e;--am-chrome:#111214;--am-control:#151619;--am-gold:#d5b85c;--am-gold-muted:#8a7437;--am-border:#3c3728;--am-border-inset:#50482e;--am-text:#f4f0e6;--am-text-secondary:#969188;--am-text-tertiary:#66635d;font-family:"Segoe UI Variable Text","Segoe UI","PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-synthesis:none}
*{box-sizing:border-box;scrollbar-color:var(--am-gold-muted) var(--am-control);scrollbar-width:thin}
body{margin:0;background:var(--am-bg);color:var(--am-text);font-size:14px;line-height:1.6}
button,input,select,summary{font:inherit}button,a,label,summary,select{-webkit-tap-highlight-color:transparent}
button{border:0;cursor:pointer;background:none;color:inherit}a{color:inherit;text-decoration:none}button:disabled{opacity:.35;cursor:default}
button,summary,select,label.file-picker{transition:background-color 120ms,border-color 120ms,opacity 120ms}
button:focus-visible,a:focus-visible,summary:focus-visible,.file-picker:focus-within,.import-label:focus-visible,input:focus-visible,select:focus-visible,[role=button]:focus-visible{outline:2px solid var(--am-gold);outline-offset:3px}
[hidden]{display:none!important}svg{display:block}input[type=file]{display:none}
::-webkit-scrollbar{width:12px;height:12px}::-webkit-scrollbar-track{background:var(--am-control)}::-webkit-scrollbar-thumb{background:var(--am-gold-muted);border:3px solid var(--am-control);border-radius:8px}::-webkit-scrollbar-thumb:hover{background:var(--am-gold)}::-webkit-scrollbar-thumb:active{background:#f0d36a}
.header{height:56px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--am-border);background:var(--am-chrome);gap:16px}
.header-left,.header-right{display:flex;align-items:center;gap:12px}.brand{font-size:17px;font-weight:700;color:var(--am-gold);letter-spacing:.3px}.header-divider{height:16px;width:1px;background:var(--am-border);margin:0 4px}.header-caption{font-size:13px;color:var(--am-text-secondary)}.header-right{gap:10px}
.primary{min-height:44px;padding:0 18px;border-radius:10px;background:var(--am-gold);color:#111214;font-size:13px;font-weight:700}.primary:hover:not(:disabled){opacity:.86}.primary:active:not(:disabled){opacity:.65}
.secondary{min-height:42px;padding:0 16px;border:1px dashed var(--am-gold-muted);border-radius:9px;background:#121315;color:var(--am-gold);font-size:12px}.secondary:hover:not(:disabled){border-color:var(--am-gold);background:#1b1a15}.secondary:active:not(:disabled){background:#28251b}
.header-button{min-height:34px;font-size:12px;padding:0 13px}.wide{width:100%}.count{font-variant-numeric:tabular-nums;margin-left:7px;color:var(--am-text-secondary);font-size:11px}
.icon-button{width:34px;height:30px;display:inline-grid;place-items:center;flex-shrink:0;border-radius:7px;color:var(--am-text-secondary);font-size:21px;line-height:1}.icon-button:hover{color:var(--am-gold);background:#252117}.icon-button svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.3;stroke-linecap:round;stroke-linejoin:round}
.header-menu{position:relative}.header-menu>summary{display:flex;align-items:center;justify-content:center;gap:14px;list-style:none;cursor:pointer;min-height:34px;padding:0 13px;background:#121315;border:1px dashed var(--am-gold-muted);border-radius:9px;color:var(--am-gold);font-size:12px}.header-menu>summary::-webkit-details-marker{display:none}.header-menu>summary:hover,.header-menu[open]>summary{border-color:var(--am-gold);background:#28251b}.header-menu>summary span{color:var(--am-gold-muted)}
.menu-content{position:absolute;right:0;top:calc(100% + 8px);min-width:168px;padding:6px;background:var(--am-chrome);border:1px solid #5c4e27;border-radius:9px;z-index:20}.menu-content button,.menu-content label{display:flex;align-items:center;min-height:38px;width:100%;padding:8px 12px;text-align:left;font-size:12px;white-space:nowrap;color:#e7e2d7;cursor:pointer;border-radius:5px}.menu-content button:hover,.menu-content label:hover{background:#302a1b;color:var(--am-gold)}
.workspace{display:grid;grid-template-columns:246px minmax(0,1fr) 312px;gap:14px;padding:18px;height:calc(100dvh - 56px);min-height:600px;max-width:2200px;margin:0 auto;align-items:stretch}
.panel{background:var(--am-panel);border:1px solid var(--am-border);border-radius:15px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:28px;margin-bottom:20px}.panel-heading h2{font-size:15px;color:var(--am-gold);font-weight:600;margin:0;overflow-wrap:anywhere}
.materials{padding:18px;display:flex;flex-direction:column;min-height:0;overflow:auto}.material-field{margin-bottom:20px}.field-label{display:flex;align-items:center;justify-content:space-between;margin-bottom:9px;font-size:13px}.file-type,.optional{font-size:11px;color:var(--am-text-tertiary)}
.file-picker{display:flex;align-items:center;gap:10px;min-height:54px;padding:12px;background:var(--am-inset);border:1px dashed var(--am-gold-muted);border-radius:9px;cursor:pointer}.file-picker:hover{border-color:var(--am-gold);background:#171711}.file-picker svg{width:20px;height:20px;fill:none;stroke:var(--am-gold-muted);stroke-width:1.2;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.file-picker>span{font-size:12px;color:var(--am-text-secondary);line-height:1.7;overflow-wrap:anywhere}
.setting{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:var(--am-text-secondary);margin:4px 0 22px}.setting select{width:90px}.material-actions{display:grid;gap:10px}
select{height:40px;padding:0 30px 0 12px;border-radius:7px;border:1px solid #6b5a2c;background-color:var(--am-control);color:var(--am-text);font-size:12px;cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='m1 1 4 4 4-4' fill='none' stroke='%23d5b85c' stroke-width='1.4'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 11px center}select:hover{border-color:var(--am-gold)}select:focus{border-color:var(--am-gold)}option{background:#111214;color:#e7e2d7;padding:8px 10px}option:checked{background:#4a4022;color:#f4f0e6}option:hover{background:#28251b}
.format-help{margin-top:26px;padding-top:17px;border-top:1px solid var(--am-border)}.format-help>summary{cursor:pointer;list-style:none;font-size:11px;color:var(--am-text-secondary);display:flex;justify-content:space-between;align-items:center}.format-help>summary::after{content:'＋';color:var(--am-gold-muted)}.format-help[open]>summary::after{content:'−'}.format-help pre{font-family:inherit;font-size:11px;line-height:2;color:var(--am-text-secondary);background:var(--am-inset);border:1px solid #302d23;border-radius:8px;padding:10px 9px;white-space:pre-wrap;margin:12px 0}.text-button{padding:0;color:var(--am-gold);font-size:11px}.text-button:hover{text-decoration:underline;text-underline-offset:3px}
.sidebar-bottom{margin-top:auto;padding-top:24px}.settings-link{display:flex;align-items:center;gap:8px;width:100%;font-size:11px;color:var(--am-text-secondary);padding:10px 0}.settings-link:hover{color:var(--am-gold)}.status-dot{width:5px;height:5px;flex-shrink:0;background:#81786a;border-radius:50%}.status-dot.ready{background:#8aa875}.settings-arrow{margin-left:auto;font-size:18px;color:var(--am-gold-muted)}.storage-note{display:block;font-size:10px;color:var(--am-text-tertiary);margin-top:10px}
.studio{display:flex;flex-direction:column;min-width:0;min-height:0}.studio-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:52px;margin-bottom:14px}.lecture-heading{min-width:0}.studio-heading h1{font-size:20px;font-weight:600;letter-spacing:.2px;margin:0 0 7px;line-height:1.4;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lecture-meta{display:flex;align-items:center;gap:10px;font-size:11px;color:var(--am-text-secondary)}.badge{padding:1px 7px;border-radius:5px;background:#1b1a15;border:1px solid #413a25;color:var(--am-gold);font-size:10px;line-height:1.8;white-space:nowrap}.badge.real{color:#b5c59b;border-color:#394230;background:#171c14}.detail-toggle{min-height:34px;white-space:nowrap;padding:0 12px;font-size:11px}
.canvas-shell{position:relative;overflow:hidden;min-height:210px;flex:1;background:var(--am-inset)}#graph{display:block;width:100%;height:100%;touch-action:none;cursor:grab}#graph:active{cursor:grabbing}.canvas-toolbar{position:absolute;top:15px;left:18px;right:18px;display:flex;align-items:center;justify-content:space-between;gap:14px;font-size:11px;color:var(--am-text-secondary);pointer-events:none;z-index:2}.live-state{display:flex;gap:7px;align-items:center}.live-state i{width:5px;height:5px;border-radius:50%;background:#756d5e}.live-state i.playing{background:var(--am-gold);box-shadow:0 0 0 3px #d5b85c16}.canvas-toolbar>span:last-child{font-variant-numeric:tabular-nums;color:var(--am-text-tertiary)}
.canvas-bottom{position:absolute;bottom:14px;right:14px;pointer-events:none}.zoom-controls{display:flex;background:#101113;border:1px solid var(--am-border-inset);border-radius:8px;pointer-events:auto}.zoom-controls button{width:30px;height:28px;font-size:17px;color:var(--am-text-secondary);border-right:1px solid var(--am-border)}.zoom-controls button:last-child{border-right:0}.zoom-controls button:hover{color:var(--am-gold);background:#28251b}
.empty-graph{position:absolute;left:50%;top:49%;transform:translate(-50%,-50%);text-align:center;pointer-events:none;color:var(--am-text-secondary)}.empty-graph strong{font-size:14px;font-weight:500}.empty-graph p{font-size:12px;color:var(--am-text-tertiary);margin:8px 0 0}
.playback{flex-shrink:0;padding:14px 2px 17px}.playback-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.playback-buttons{display:flex;align-items:center;gap:11px}.play-button{width:40px;height:36px;display:grid;place-items:center;border-radius:9px;background:var(--am-gold);color:#111214;font-size:13px}.play-button:hover{opacity:.86}.play-button:active{opacity:.65}.time-display{display:flex;align-items:center;gap:9px;font-size:12px;font-variant-numeric:tabular-nums;color:var(--am-text-secondary)}.time-display b{color:var(--am-text);font-weight:500}.time-separator{color:var(--am-text-tertiary)}.playback-options{display:flex;align-items:center;gap:12px}.speed-label{display:flex;align-items:center;gap:9px;color:var(--am-text-tertiary);font-size:11px}.speed-label select{height:34px;width:68px;padding-left:10px;padding-right:22px;font-size:11px;background-position:right 8px center}.playback-menu>summary{min-height:30px;width:30px;padding:0;font-size:19px;font-weight:600;letter-spacing:1px;background:none;border:1px solid transparent;color:var(--am-text-secondary)}.playback-menu .menu-content{min-width:160px}
.scrubber-wrap{position:relative;display:flex;align-items:center;height:16px;margin:12px 0 4px}#scrubber{width:100%;height:4px;margin:0;cursor:pointer;appearance:none;border-radius:2px;background:linear-gradient(to right,var(--am-gold) var(--progress,30%),#25231c var(--progress,30%));accent-color:var(--am-gold);position:relative;z-index:1}#scrubber::-webkit-slider-thumb{appearance:none;width:10px;height:10px;border-radius:50%;background:var(--am-gold);border:0}#scrubber::-moz-range-thumb{width:10px;height:10px;border:0;border-radius:50%;background:var(--am-gold)}#scrubber:focus-visible{outline-offset:7px}#eventMarks{position:absolute;inset:0;pointer-events:none}#eventMarks i{position:absolute;top:0;width:3px;height:3px;border-radius:50%;background:var(--am-gold-muted)}.time-ticks{display:flex;justify-content:space-between;color:var(--am-text-tertiary);font-size:10px;font-variant-numeric:tabular-nums}
.transcript-panel{flex:0 0 154px;min-height:0;padding:14px 18px;overflow:hidden}.transcript-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;height:22px}.transcript-heading h2{margin:0;color:var(--am-gold);font-size:13px;font-weight:600}.transcript-heading h2 span{font-size:10px;color:var(--am-text-tertiary);font-weight:400;margin-left:12px;font-variant-numeric:tabular-nums}.transcript-heading .icon-button{width:26px;height:24px;font-size:17px}.transcript-list{height:calc(100% - 32px);overflow:auto;padding-right:5px}.transcript-row{display:grid;grid-template-columns:46px minmax(0,1fr);gap:12px;padding:6px 10px;border-left:2px solid transparent;border-radius:5px;font-size:13px;line-height:1.8;color:var(--am-text-secondary)}.transcript-row time{font-variant-numeric:tabular-nums;font-size:11px;color:var(--am-text-tertiary);padding-top:2px}.transcript-row.active{border-left-color:var(--am-gold);background:#1c1a14;color:var(--am-text)}.transcript-panel.collapsed{flex-basis:50px;padding-top:13px}.transcript-panel.collapsed .transcript-list{display:none}.transcript-panel.collapsed .transcript-heading{margin:0}
.details{padding:18px;min-height:0;overflow-y:auto;scrollbar-gutter:stable}.details .panel-heading{margin-bottom:18px;align-items:flex-start}.details .panel-heading h2{font-size:15px;line-height:1.8}.details .panel-heading .icon-button{width:24px;height:26px;font-size:22px}.detail-empty{color:var(--am-text-tertiary);font-size:12px;padding-top:6px}.detail-empty p{margin:0}.detail-summary{font-size:14px;line-height:1.9;margin:0 0 15px;color:var(--am-text);overflow-wrap:anywhere}.node-metrics{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:23px;color:var(--am-text-secondary);font-size:11px}.key-badge{font-size:10px;padding:1px 6px;border:1px solid #504525;border-radius:4px;background:#211e15;color:var(--am-gold)}.detail-section-title{display:flex;align-items:center;gap:8px;font-size:12px;font-weight:600;color:var(--am-gold);margin:22px 0 10px}.detail-section-title span{font-weight:400;font-size:10px;color:var(--am-text-tertiary)}.related-links{display:flex;flex-wrap:wrap;gap:7px}.relation-pill{border:1px solid var(--am-border-inset);border-radius:7px;padding:5px 9px;background:#141513;color:var(--am-text-secondary);font-size:11px;line-height:1.7;overflow-wrap:anywhere;max-width:100%}.relation-pill:hover{border-color:var(--am-gold-muted);color:var(--am-gold);background:#211e15}.parent-link{font-size:11px;color:var(--am-text-secondary);margin-bottom:16px}.parent-link button{padding:0;color:var(--am-gold)}
.evidence-card{padding:12px;background:var(--am-inset);border:1px solid var(--am-border);border-radius:11px;margin-bottom:10px}.evidence-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.evidence-heading time{font-variant-numeric:tabular-nums;font-size:11px;color:var(--am-gold);white-space:nowrap}.evidence-heading button{font-size:11px;padding:0;color:var(--am-text-secondary);white-space:nowrap}.evidence-heading button:hover{color:var(--am-gold)}.evidence-card p{font-size:12px;color:var(--am-text-secondary);line-height:1.85;white-space:pre-wrap;overflow-wrap:anywhere;margin:9px 0 0}.slide-card{padding:12px;background:var(--am-inset);border:1px solid var(--am-border);border-radius:11px;line-height:1.85;font-size:12px;color:var(--am-text-secondary);white-space:pre-wrap;overflow-wrap:anywhere;margin-bottom:10px}.source-badge{display:block;color:var(--am-gold);font-size:10px;margin-bottom:7px}.figure-section{margin-top:22px;border-top:1px solid var(--am-border);padding-top:12px}.figure-section summary{color:var(--am-text-secondary);font-size:11px;cursor:pointer}.figure-section p{font-size:12px;color:var(--am-text-tertiary);margin:10px 0 0}
.focus-navigation{position:absolute;left:15px;right:15px;top:45px;display:flex;align-items:center;gap:12px;z-index:3;font-size:11px;pointer-events:none}.focus-navigation button{min-height:30px;padding:0 10px;background:#121315;border:1px dashed var(--am-gold-muted);border-radius:7px;color:var(--am-gold);pointer-events:auto}.focus-navigation button:hover{border-color:var(--am-gold);background:#28251b}.focus-navigation span{color:var(--am-text-secondary);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.focus-navigation button:last-child{margin-left:auto}.inside-bubble #nodesLayer,.inside-bubble #edgesLayer,.inside-bubble #axisLayer,.inside-bubble #particlesLayer{visibility:hidden;pointer-events:none}.inside-bubble #focusLayer{visibility:visible}.inside-bubble>rect{opacity:.18}.inside-bubble{cursor:default}.focus-envelope{pointer-events:none}.inside-child,.inside-pagination{cursor:pointer;outline:none}.inside-child:hover>.soap-contour,.inside-child:focus>.soap-contour{stroke-opacity:1}.inside-child:focus-visible>.soap-contour{stroke:var(--am-gold);stroke-opacity:1}.inside-child text{pointer-events:none}
.node{outline:none}.soap-node{cursor:grab}.soap-node:focus-visible .soap-contour{stroke:var(--am-gold);stroke-opacity:1}.soap-node:hover .soap-contour,.soap-node.selected .soap-contour{stroke-opacity:1}.soap-node text,.inside-child text{pointer-events:none;user-select:none;paint-order:stroke;stroke:#090a0be6;stroke-width:2.5px;stroke-linejoin:round;fill:var(--am-text)}.inside-child text{stroke-width:.5px}.soap-contour,.soap-film,.soap-shadow,.soap-glint-dot,.soap-inner-rim,.soap-highlight,.soap-lower-glint{pointer-events:none}.cell-neck{fill:#a7cfdf;fill-opacity:.24;stroke:#d5b85c;stroke-width:1.65;stroke-opacity:.72;pointer-events:none}.cell-neck.related{fill-opacity:.15;stroke-opacity:.65;stroke-width:1.5}.injection-particle,.timeline-emitter{pointer-events:none}
dialog{width:540px;max-width:calc(100vw - 32px);max-height:80dvh;padding:22px;border:1px solid var(--am-border-inset);border-radius:15px;background:var(--am-panel);color:var(--am-text);overflow:auto}dialog::backdrop{background:#000a}.modal-top{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:20px}.modal-top h2{font-size:17px;color:var(--am-gold);font-weight:600;margin:0}.modal-top .icon-button{font-size:24px}.modal-body{font-size:13px;line-height:1.9;color:var(--am-text-secondary)}.modal-body p{margin:12px 0}.modal-body pre{background:var(--am-inset);border:1px solid var(--am-border-inset);border-radius:8px;padding:14px;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--am-text);font-size:12px}.modal-body code{color:var(--am-gold);font-size:12px}.modal-body details{padding:12px 0;border-top:1px solid var(--am-border);margin-top:18px}.modal-body summary{cursor:pointer;color:var(--am-gold);font-size:12px}.modal-body .primary{margin-top:16px}.settings-state{display:flex;justify-content:space-between;gap:16px;font-size:12px}.settings-state b{color:var(--am-text);font-weight:500}.data-note{font-size:11px;color:var(--am-text-tertiary)}
.history-row{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--am-border)}.history-row:first-child{padding-top:0}.history-open{display:flex;flex-direction:column;gap:5px;text-align:left;flex:1;min-width:0;padding:0}.history-open strong{font-size:14px;font-weight:500;overflow-wrap:anywhere}.history-open:hover strong{color:var(--am-gold)}.history-open small{font-size:11px;color:var(--am-text-tertiary)}.history-mode{font-size:10px;color:var(--am-gold-muted);white-space:nowrap}.history-delete{font-size:11px;color:var(--am-text-tertiary);padding:5px}.history-delete:hover{color:#d6a394}.original-reader{font-size:15px;line-height:1.9;color:var(--am-text)}.original-reader>p{background:var(--am-inset);border:1px solid var(--am-border);border-radius:11px;padding:16px;white-space:pre-wrap;overflow-wrap:anywhere;max-height:48dvh;overflow:auto;margin:16px 0}.original-reader h3{font-size:12px;color:var(--am-gold);font-weight:500}.reading-time{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:11px;color:var(--am-text-secondary);font-variant-numeric:tabular-nums}.reading-time span{color:var(--am-text-tertiary)}.reading-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px}.reading-actions button{min-height:36px;border:1px dashed var(--am-gold-muted);border-radius:9px;padding:0 13px;color:var(--am-gold);font-size:12px;background:#121315}.reading-actions button:hover{border-color:var(--am-gold);background:#28251b}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:40;max-width:min(90vw,560px);padding:12px 18px;border:1px solid var(--am-border-inset);border-radius:10px;background:#191914;color:var(--am-text);font-size:13px;line-height:1.7}
.workspace.materials-collapsed{grid-template-columns:minmax(0,1fr) 312px}.materials-collapsed .materials{display:none}.workspace.details-collapsed{grid-template-columns:246px minmax(0,1fr)}.details-collapsed .details{display:none}.workspace.materials-collapsed.details-collapsed{grid-template-columns:minmax(0,1fr)}
@media(max-height:820px) and (min-width:1101px){.workspace{padding:14px;gap:12px;min-height:560px}.transcript-panel{flex-basis:126px}.studio-heading{min-height:48px;margin-bottom:12px}.canvas-shell{min-height:180px}.materials .panel-heading{margin-bottom:16px}.material-field{margin-bottom:16px}.format-help{margin-top:20px}.playback{padding:12px 2px 14px}}
@media(max-width:1200px){.workspace{grid-template-columns:220px minmax(0,1fr) 280px;gap:12px;padding:14px}.workspace.materials-collapsed{grid-template-columns:minmax(0,1fr) 280px}.workspace.details-collapsed{grid-template-columns:220px minmax(0,1fr)}.materials,.details{padding:16px}.studio-heading h1{font-size:18px}.detail-toggle{font-size:10px;padding:0 10px}}
@media(max-width:1000px){.workspace{grid-template-columns:214px minmax(0,1fr);height:auto;min-height:calc(100dvh - 56px)}.studio{height:calc(100dvh - 86px);min-height:590px}.materials{align-self:start;min-height:540px}.details{grid-column:1/-1;max-height:480px}.workspace.materials-collapsed,.workspace.details-collapsed.materials-collapsed{grid-template-columns:minmax(0,1fr)}.workspace.details-collapsed{grid-template-columns:214px minmax(0,1fr)}.header-caption{font-size:12px}.detail-toggle{min-height:32px}}
@media(max-width:650px){.header{padding:0 12px;height:54px;gap:10px}.header-left{gap:8px}.brand{font-size:16px}.header-caption,.header-divider{display:none}.header-right{gap:6px}.header-button{min-height:32px;padding:0 9px;font-size:11px}.header-menu>summary{min-height:32px;padding:0 9px;gap:8px;font-size:11px}.count{display:none}.workspace,.workspace.details-collapsed{display:flex;flex-direction:column;padding:12px;gap:12px;min-height:calc(100dvh - 54px)}.materials{min-height:0;padding:16px;display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%;overflow:visible}.materials .panel-heading{grid-column:1/-1;margin:0}.material-field{margin:0}.file-picker{min-height:48px;padding:10px}.field-label{font-size:12px}.setting{margin:0;align-self:center}.material-actions{gap:8px}.material-actions .primary,.material-actions .secondary{min-height:38px}.format-help{margin:0;grid-column:1/-1;padding-top:12px}.sidebar-bottom{padding:0;grid-column:1/-1;display:flex;align-items:center;gap:10px}.settings-link{width:auto;gap:6px;padding:2px 0;font-size:10px}.settings-arrow{margin-left:6px}.storage-note{margin:0 0 0 auto;font-size:9px}.studio{height:690px;min-height:0}.studio-heading{min-height:50px;margin-bottom:12px}.studio-heading h1{font-size:18px}.lecture-meta{font-size:10px;gap:8px}.canvas-shell{min-height:240px}.canvas-toolbar{left:12px;right:12px;top:12px;font-size:10px}.canvas-toolbar>span:last-child{font-size:9px}.focus-navigation{left:10px;right:10px;gap:7px;font-size:10px;top:39px}.focus-navigation button{padding:0 8px;min-height:27px}.focus-navigation span{max-width:110px}.playback{padding-top:12px}.playback-buttons{gap:8px}.speed-label>span{display:none}.playback-options{gap:5px}.transcript-panel{flex-basis:142px;padding:13px}.transcript-row{font-size:12px;gap:8px;padding-left:6px}.details{width:100%;max-height:650px;padding:16px}.details .panel-heading{margin-bottom:14px}.header-left .icon-button{width:26px}.reading-time{font-size:10px}.original-reader{font-size:14px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.select-control{position:relative;min-width:68px}.select-control .native-select{position:absolute;opacity:0;pointer-events:none;width:1px!important;height:1px!important;padding:0;border:0}.setting .select-control{width:90px}.select-trigger{display:block;width:100%;height:40px;border:1px solid #6b5a2c;border-radius:7px;background:#151619 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='m1 1 4 4 4-4' fill='none' stroke='%23d5b85c' stroke-width='1.4'/%3E%3C/svg%3E") no-repeat right 11px center;padding:0 30px 0 12px;color:var(--am-text);font-size:12px;text-align:left}.select-trigger:hover,.select-trigger[aria-expanded=true]{border-color:var(--am-gold)}.select-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;padding:5px;border:1px solid #6b5a2c;border-radius:8px;background:#111214;z-index:35}.select-option{display:block;min-height:34px;width:100%;padding:7px 10px;border-radius:4px;text-align:left;color:#e7e2d7;white-space:nowrap;font-size:12px}.select-option:hover,.select-option:focus{background:#28251b;outline:none;color:var(--am-gold)}.select-option[aria-selected=true]{background:#4a4022;color:var(--am-text)}.speed-label .select-control{width:68px}.speed-label .select-trigger{height:34px;font-size:11px;padding-left:10px;padding-right:23px;background-position:right 8px center}

/* Knowledge diagrams occupy the canvas; transcript evidence stays in the sidebar. */
.diagram-panel[hidden]{display:none}.diagram-panel{position:absolute;inset:78px 16px 16px;z-index:4;background:#101113;display:flex;flex-direction:column;gap:12px;padding:20px;border:1px solid var(--am-border-inset);border-radius:14px;overflow:auto}.diagram-active #graph{opacity:.13;pointer-events:none}.diagram-active .canvas-bottom{display:none}.diagram-active .focus-navigation{z-index:6}.diagram-heading{display:flex;align-items:center;justify-content:space-between;gap:18px}.diagram-kicker{font-size:10px;letter-spacing:2px;color:var(--am-gold-muted)}.diagram-heading h2{font-size:22px;font-weight:600;line-height:1.3;margin:4px 0 0}.diagram-heading .badge{flex-shrink:0;font-size:10px}.diagram-summary{font-size:12px;color:var(--am-text-secondary);margin:0;max-width:720px;line-height:1.7}.diagram-visual{flex:1;min-height:220px;overflow:auto;display:flex;align-items:center;background:#0b0c0e;border-radius:11px;border:1px solid #25251f}.diagram-svg{width:100%;min-width:560px;max-height:430px;display:block}.dg-node{cursor:pointer;outline:none}.dg-node>rect{fill:#14171a;stroke:#494940;stroke-width:1.2}.dg-node:hover>rect,.dg-node:focus-visible>rect{stroke:#eee2b4;stroke-width:2.4}.dg-node.is-active>rect{stroke:#d5b85c;stroke-width:2.2;fill:#242118}.dg-index{font-size:12px;fill:#81785d}.dg-label{font-size:17px;fill:#f4f0e6;font-weight:600}.dg-caption{font-size:12px;fill:#aaa69d}.dg-glyph{fill:#233b40;stroke:#76a5ad;stroke-width:2}.dg-glyph .dg-wire{stroke:#64828a;stroke-width:1.2;fill:none}.dg-glyph .dg-function{fill:none;stroke-width:3.5}.dg-symbol{fill:#c3dddd;stroke:none;font-size:23px}.dg-node.is-active .dg-glyph{stroke:#dfc66f;fill:#3e3822}.dg-node.is-active .dg-wire{stroke:#9d915d}.dg-edge{stroke:#666251;stroke-width:1.6;fill:none}.dg-edge text{stroke:#0b0c0e;stroke-width:5px;paint-order:stroke;fill:#a39c87;font-size:11px}.dg-edge.is-active{stroke:#d5b85c;stroke-width:2.2}.dg-signal{display:none;stroke:#f9e9aa;stroke-width:4;stroke-dasharray:3 15;stroke-linecap:round}.diagram-playing .dg-edge.is-active .dg-signal{display:block;animation:diagram-flow 1s linear infinite}.diagram-steps{display:flex;gap:6px;flex-wrap:wrap}.diagram-steps button{display:flex;gap:8px;align-items:center;min-height:34px;padding:6px 12px;border:1px solid #38362b;border-radius:7px;color:#aaa69d;font-size:11px}.diagram-steps button span{color:#84764b;font-size:10px}.diagram-steps button[aria-current=step]{border-color:var(--am-gold-muted);background:#2b2619;color:#f4e6b9}.diagram-explanation{background:#151619;border-radius:11px;padding:14px 16px;border-left:2px solid var(--am-gold);flex-shrink:0}.diagram-explanation>div{display:flex;align-items:center;gap:12px}.diagram-step-count{font-size:11px;color:var(--am-gold-muted);font-variant-numeric:tabular-nums}.diagram-explanation h3{font-size:14px;color:var(--am-gold);margin:0;font-weight:500}.diagram-explanation p{font-size:13px;line-height:1.8;margin:6px 0 0;min-height:46px;color:#d4d0c6}.diagram-controls{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}.diagram-controls>div{display:flex;align-items:center;gap:8px}.diagram-controls .secondary,.diagram-error-actions .secondary{min-height:34px;padding:0 12px;font-size:11px}.diagram-restart,.diagram-source{font-size:11px;color:var(--am-text-secondary);min-height:34px;padding:0 4px}.diagram-source:hover,.diagram-restart:hover{color:var(--am-gold)}.diagram-entry{padding:18px 0;border-top:1px solid var(--am-border);margin-top:20px}.diagram-entry button{width:100%;min-height:40px;font-size:12px}.diagram-wait{margin:auto;text-align:center;max-width:440px;padding:24px}.diagram-wait h2{font-size:24px;margin:8px 0 16px}.diagram-wait p{font-size:13px;color:var(--am-text-secondary);line-height:1.8}.diagram-loader{height:3px;width:96px;margin:30px auto;border-radius:3px;background:#8a7437;animation:diagram-loading 1.4s ease-in-out infinite}.diagram-error-actions{display:flex;justify-content:center;gap:12px;margin-top:22px}@keyframes diagram-flow{to{stroke-dashoffset:-36}}@keyframes diagram-loading{50%{opacity:.3;transform:scaleX(.45)}}
@media(max-width:1200px){.diagram-panel{inset:78px 12px 12px;padding:16px;gap:10px}.diagram-heading h2{font-size:20px}.diagram-explanation p{font-size:12px}.diagram-visual{min-height:205px}.diagram-svg{min-width:520px}}
@media(max-width:650px){.diagram-panel{inset:74px 8px 8px;padding:13px;gap:10px}.diagram-heading{gap:8px}.diagram-heading h2{font-size:19px}.diagram-visual{min-height:220px;flex-shrink:0}.diagram-svg{min-width:600px}.diagram-explanation p{min-height:65px}.diagram-steps button{padding:5px 8px}.diagram-controls{gap:5px}.diagram-controls>div{gap:5px}.diagram-summary{font-size:11px}.diagram-panel{overscroll-behavior:contain}}
@media(prefers-reduced-motion:reduce){.diagram-playing .dg-edge.is-active .dg-signal{animation:none;display:none}.diagram-loader{animation:none}}
.diagram-svg{height:100%;max-height:100%;min-height:210px;flex-shrink:0}.dg-label{pointer-events:none}.dg-node .dg-caption,.dg-node .dg-index,.dg-glyph{pointer-events:none}