.course-novel-view,.novel-course-editor{position:relative;min-width:0}.novel-course-editor{--novel-purple:#7c3aed;--novel-purple-soft:#f5f3ff;--novel-line:#e5e7eb;--novel-ink:#111827;width:100%}.course-novel-view{position:relative}.course-document-surface{--course-document-width:840px;--course-document-font-size:17px;--course-document-line-height:1.8;--course-document-block-gap:14px;box-sizing:border-box;width:100%;max-width:var(--course-document-width);margin-inline:auto;padding-inline:28px;color:var(--course-document-ink,var(--novel-ink,var(--v2-text-primary)));font-size:var(--course-document-font-size);font-synthesis:style;line-height:var(--course-document-line-height);letter-spacing:0;overflow-wrap:anywhere}.course-document-surface,.course-document-surface>*,.course-locked-content,.course-media-frame,.course-media-gallery,.course-media-node,.course-prompt-block,.course-prompt-reader{min-width:0;max-width:100%}.course-document-surface iframe,.course-document-surface img,.course-document-surface picture,.course-document-surface video{display:block;max-width:100%}.course-document-surface.ProseMirror{max-width:var(--course-document-width);min-height:680px;padding:56px 28px 120px;outline:none}.course-document-surface>*{margin:0 0 var(--course-document-block-gap)}.course-document-surface .ProseMirror-gapcursor{position:relative;display:none;height:0;margin:0;pointer-events:none}.course-document-surface.ProseMirror-focused .ProseMirror-gapcursor{display:block}.course-document-surface .ProseMirror-gapcursor:after{position:absolute;top:-1px;left:0;width:100%;border-top:2px solid #8b5cf6;box-shadow:0 0 10px rgba(124,58,237,.28);content:"";animation:course-gapcursor-blink 1.1s steps(2,start) infinite}.course-document-surface p{min-height:1.8em;white-space:pre-wrap}.course-document-surface em{font-style:italic;font-synthesis:style}.course-document-surface.ProseMirror p.is-editor-empty:first-child:before,.course-document-surface.ProseMirror p.is-empty:before{content:attr(data-placeholder);float:left;height:0;color:#b7bdc8;pointer-events:none}.course-document-surface h1,.course-document-surface h2,.course-document-surface h3{color:var(--course-document-ink,#111827);font-weight:750;line-height:1.35;scroll-margin-top:var(--course-document-scroll-offset,96px)}.course-document-surface h1{margin-top:42px;font-size:32px}.course-document-surface h2{margin-top:34px;font-size:25px}.course-document-surface h3{margin-top:28px;font-size:20px}.course-document-surface ol,.course-document-surface ul{padding-left:1.6em}.course-document-surface li{margin:6px 0}.course-document-surface ul[data-type=taskList]{padding-left:0;list-style:none}.course-document-surface ul[data-type=taskList] li{display:flex;align-items:flex-start;gap:10px}.course-document-surface ul[data-type=taskList] li>label{margin-top:4px}.course-document-surface blockquote{margin:22px 0;padding:8px 18px;border-left:3px solid var(--course-document-accent,#a78bfa);color:var(--course-document-muted,#4b5563);background:var(--course-document-soft,#faf9ff)}.course-document-surface .course-details-block,.course-document-surface details[data-course-details]{margin:22px 0;overflow:hidden;border:1px solid var(--course-document-border,#e5e7eb);border-radius:10px;background:var(--course-document-soft,#faf9ff)}.course-document-surface .course-details-block>summary,.course-document-surface details[data-course-details]>summary{padding:12px 16px;color:var(--course-document-ink,#111827);font-weight:650;cursor:pointer}.course-document-surface .course-details-block>summary:focus-visible,.course-document-surface details[data-course-details]>summary:focus-visible{outline:2px solid var(--course-document-accent,#a78bfa);outline-offset:-3px}.course-document-surface .course-details-content,.course-document-surface [data-course-details-content]{padding:4px 16px 16px;border-top:1px solid var(--course-document-border,#e5e7eb)}.course-document-surface .course-details-content>:last-child,.course-document-surface [data-course-details-content]>:last-child{margin-bottom:0}.course-document-surface hr{margin:32px 0;border:0;border-top:1px solid var(--course-document-border,#e5e7eb)}.course-document-surface a{color:var(--course-document-accent-strong,#6d28d9);text-decoration:underline;text-decoration-color:#c4b5fd;text-underline-offset:3px}.course-document-surface mark{padding:.08em .15em;border-radius:3px}.course-document-surface code:not(pre code){padding:2px 5px;border-radius:4px;background:#f3f4f6;color:#7c3aed;font-size:.9em}.course-code-block,.course-document-surface pre{position:relative;margin:22px 0;padding:20px 22px;border-radius:8px;background:#17151d;color:#f8fafc;font:14px/1.7 ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;white-space:pre}.course-code-block,.course-document-surface .course-table-scroll,.course-document-surface .tableWrapper,.course-document-surface pre{max-width:100%;overflow-x:auto;overscroll-behavior:contain}.course-document-surface table{width:100%;min-width:560px;border-collapse:collapse;background:#fff}.course-document-surface td,.course-document-surface th{min-width:110px;padding:10px 12px;border:1px solid #e5e7eb;text-align:left;vertical-align:top}.course-document-surface th{background:#f9fafb;font-weight:650}.course-media-node{display:block;position:relative;width:100%;max-width:100%;margin:26px auto}.course-media-frame{position:relative;width:min(100%,var(--course-media-width,100%));max-width:100%;margin-inline:auto;transition:box-shadow .18s ease}.course-media-expand,.course-media-gallery-expand{position:absolute;z-index:3;top:10px;right:10px;display:grid;width:34px;height:34px;place-items:center;border:1px solid hsla(0,0%,100%,.72);border-radius:7px;background:rgba(30,25,43,.72);color:#fff;cursor:pointer;opacity:0;transition:opacity .14s ease,background-color .14s ease}.course-media-expand svg,.course-media-gallery-expand svg{width:16px;height:16px}.course-media-gallery-item:focus-within .course-media-gallery-expand,.course-media-gallery-item:hover .course-media-gallery-expand,.course-media-node:focus-within .course-media-expand,.course-media-node:hover .course-media-expand{opacity:1}.course-media-expand:focus-visible,.course-media-expand:hover,.course-media-gallery-expand:focus-visible,.course-media-gallery-expand:hover{background:rgba(76,29,149,.9);outline:2px solid hsla(0,0%,100%,.76);outline-offset:2px}.course-media-error{display:grid;min-height:180px;place-items:center;gap:10px;padding:24px;border:1px dashed #d8d1e4;border-radius:8px;background:#faf9fc;color:#6b6475;text-align:center}.course-media-error button{display:inline-flex;min-height:34px;align-items:center;gap:6px;padding:0 10px;border:1px solid #ddd6ea;border-radius:6px;background:#fff;color:#5b397f;cursor:pointer}.course-media-error button svg{width:15px;height:15px}.course-media-lightbox{position:fixed;z-index:12000;inset:0;display:grid;width:100dvw;height:100dvh;min-width:0;min-height:0;box-sizing:border-box;grid-template:minmax(0,1fr) /minmax(0,1fr);place-items:center;overflow:hidden;padding:64px 28px 88px;background:rgba(15,12,22,.92)}.course-media-lightbox-stage{display:grid;width:100%;height:100%;min-width:0;min-height:0;max-width:1200px;max-height:840px;place-items:center;overflow:hidden;overscroll-behavior:contain;touch-action:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.course-media-lightbox-stage[data-pannable=true]{cursor:grab}.course-media-lightbox-stage[data-interacting=true][data-pannable=true]{cursor:grabbing}.course-media-lightbox-stage img,.course-media-lightbox-stage video{display:block;width:100%;height:100%;max-width:100%;max-height:100%;-o-object-fit:contain;object-fit:contain;transform:translate3d(var(--course-media-x,0),var(--course-media-y,0),0) scale(var(--course-media-scale,1));transform-origin:center;will-change:transform}.course-media-lightbox-close{position:fixed;top:18px;right:18px}.course-media-lightbox-toolbar{position:fixed;z-index:1;bottom:max(18px,env(safe-area-inset-bottom));left:50%;display:flex;min-height:44px;align-items:center;gap:3px;padding:5px;border:1px solid hsla(0,0%,100%,.22);border-radius:8px;background:rgba(31,27,40,.9);box-shadow:0 12px 32px rgba(0,0,0,.28);color:#fff;transform:translateX(-50%);backdrop-filter:blur(14px)}.course-media-lightbox-toolbar button{display:grid;width:34px;height:34px;place-items:center;padding:0;border:0;border-radius:6px;background:transparent;color:inherit;cursor:pointer}.course-media-lightbox-toolbar button:focus-visible,.course-media-lightbox-toolbar button:hover{background:hsla(0,0%,100%,.14)}.course-media-lightbox-toolbar button:focus-visible{outline:2px solid rgba(196,181,253,.95);outline-offset:1px}.course-media-lightbox-toolbar button:disabled{opacity:.36;cursor:default}.course-media-lightbox-toolbar button:disabled:hover{background:transparent}.course-media-lightbox-toolbar button svg{width:17px;height:17px}.course-media-lightbox-toolbar output{width:54px;color:hsla(0,0%,100%,.86);font-size:12px;font-variant-numeric:tabular-nums;line-height:1;text-align:center}.course-media-lightbox-toolbar-divider{width:1px;height:20px;margin:0 2px;background:hsla(0,0%,100%,.18)}@media (max-width:640px){.course-document-surface{--course-document-font-size:16px;--course-document-line-height:1.75;--course-document-block-gap:12px;max-width:100%;padding-inline:0;overflow-x:clip}.course-document-surface.ProseMirror{min-height:30rem;padding:28px 0 80px}.course-document-surface h1{margin-top:30px;font-size:26px}.course-document-surface h2{margin-top:26px;font-size:22px}.course-document-surface h3{margin-top:22px;font-size:19px}.course-media-element,.course-media-frame,.course-media-gallery,.course-media-gallery-item,.course-media-node,.course-media-node img,.course-media-node video{width:100%;min-width:0;max-width:100%}.course-media-node{margin-block:20px}.course-media-element,.course-media-gallery img,.course-media-gallery video{max-height:min(72dvh,42rem);-o-object-fit:contain;object-fit:contain}.course-media-toolbar{right:0;left:auto;max-width:100%;overflow-x:auto;overscroll-behavior-inline:contain;transform:translateY(4px) scale(.97)}.course-media-node.is-selected .course-media-toolbar,.course-media-node:focus-within .course-media-toolbar,.course-media-node:hover .course-media-toolbar{transform:none}.course-media-lightbox{padding:64px 12px calc(82px + env(safe-area-inset-bottom))}.course-media-lightbox-close{top:12px;right:12px}.course-media-lightbox-toolbar{bottom:max(12px,env(safe-area-inset-bottom))}}@media (pointer:coarse){.course-media-lightbox-toolbar button{width:44px;height:44px}}@media (hover:none){.course-media-expand,.course-media-gallery-expand{opacity:1}}.course-media-node[data-alignment=left] .course-media-frame{margin-left:0;margin-right:auto}.course-media-node[data-alignment=right] .course-media-frame{margin-left:auto;margin-right:0}.course-media-element{display:block;width:100%;max-width:100%;height:auto;border:1px solid rgba(229,231,235,.9);border-radius:10px;background:#f8fafc;-o-object-fit:contain;object-fit:contain;box-shadow:0 5px 18px rgba(30,25,45,.07)}video.course-media-element{background:#111017}.course-media-node.is-resizing .course-media-element,.course-media-node.is-selected .course-media-element{border-color:#8b5cf6;box-shadow:0 0 0 3px rgba(124,58,237,.16),0 10px 26px rgba(76,29,149,.12)}.course-media-toolbar{position:absolute;z-index:30;bottom:calc(100% + 10px);left:50%;display:flex;align-items:center;gap:3px;padding:5px;border:1px solid hsla(0,0%,100%,.78);border-radius:8px;background:hsla(0,0%,100%,.84);box-shadow:0 10px 30px rgba(45,34,75,.15);opacity:0;pointer-events:none;transform:translate(-50%,4px) scale(.97);backdrop-filter:blur(14px);transition:opacity .16s ease,transform .16s ease}.course-media-node.is-selected .course-media-toolbar,.course-media-node:focus-within .course-media-toolbar,.course-media-node:hover .course-media-toolbar{opacity:1;pointer-events:auto;transform:translate(-50%) scale(1)}.course-media-drag-grip,.course-media-toolbar button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:0;border-radius:6px;background:transparent;color:#5f6572}.course-media-toolbar-divider{width:1px;height:24px;flex:0 0 1px;margin:0 3px;background:#e5e7eb}.course-media-toolbar button.course-media-width-control{width:auto;min-width:42px;padding:0 8px;font-size:11px;font-variant-numeric:tabular-nums;font-weight:700}.course-media-toolbar button{cursor:pointer}.course-media-drag-grip{border-right:1px solid #e5e7eb;border-radius:0;cursor:grab}.course-media-toolbar button:focus-visible,.course-media-toolbar button:hover{background:#f3f4f6;color:#312e81;outline:none}.course-media-toolbar button.is-active{background:#ede9fe;color:#6d28d9}.course-media-resize-handle{position:absolute;z-index:40;right:-8px;bottom:-8px;width:20px;height:20px;padding:0;border:3px solid #fff;border-radius:50%;background:#7c3aed;box-shadow:0 4px 10px rgba(76,29,149,.28);opacity:0;cursor:se-resize;touch-action:none;transition:opacity .16s ease,transform .16s ease}.course-media-node.is-resizing .course-media-resize-handle,.course-media-node.is-selected .course-media-resize-handle,.course-media-node:hover .course-media-resize-handle,.course-media-resize-handle:focus-visible{opacity:1}.course-media-resize-handle:focus-visible,.course-media-resize-handle:hover{outline:none;transform:scale(1.12)}.course-media-resize-shield{position:absolute;z-index:35;inset:0;cursor:se-resize}body.is-resizing-course-media{cursor:se-resize;-webkit-user-select:none;-moz-user-select:none;user-select:none}.course-media-gallery{position:relative;display:block;max-width:100%;margin:30px 0;padding:8px;border-radius:10px;transition:background-color .16s ease,box-shadow .16s ease}.course-media-gallery.is-editable:hover{background:rgba(249,250,251,.72)}.course-media-gallery.is-selected{background:rgba(245,243,255,.72);box-shadow:0 0 0 2px #8b5cf6}.course-nodeview-adapter.is-gallery-drop-active .course-media-gallery{background:rgba(245,243,255,.9);box-shadow:0 0 0 2px #8b5cf6,0 14px 34px rgba(124,58,237,.16)}.course-nodeview-adapter.is-gallery-drop-active .course-media-gallery:after{position:absolute;z-index:24;inset:8px;display:grid;place-items:center;border:1px dashed rgba(109,40,217,.58);border-radius:8px;background:rgba(250,248,255,.88);color:#6d28d9;content:"松开后批量上传图片";font-size:13px;font-weight:700;pointer-events:none;backdrop-filter:blur(8px)}.course-media-gallery-toolbar{position:absolute;z-index:30;bottom:calc(100% + 8px);left:50%;display:flex;max-width:calc(100vw - 32px);gap:3px;padding:5px;border:1px solid hsla(0,0%,100%,.84);border-radius:8px;background:hsla(0,0%,100%,.88);box-shadow:0 10px 30px rgba(45,34,75,.14);opacity:0;pointer-events:none;transform:translate(-50%,4px) scale(.97);backdrop-filter:blur(14px);overflow-x:auto;overscroll-behavior:contain;transition:opacity .16s ease,transform .16s ease}.course-media-gallery-toolbar-group{display:flex;flex:0 0 auto;gap:3px}.course-media-gallery-toolbar-divider{width:1px;flex:0 0 1px;margin:4px 3px;background:#e5e7eb}.course-media-gallery.is-selected .course-media-gallery-toolbar,.course-media-gallery:focus-within .course-media-gallery-toolbar,.course-media-gallery:hover .course-media-gallery-toolbar{opacity:1;pointer-events:auto;transform:translate(-50%) scale(1)}.course-media-gallery-toolbar button{height:32px;padding:0 11px;border:0;border-radius:6px;background:transparent;color:#5f6572;cursor:pointer;font-size:12px;font-weight:650}.course-media-gallery-toolbar button:focus-visible,.course-media-gallery-toolbar button:hover{background:#f3f4f6;color:#312e81;outline:none}.course-media-gallery-toolbar button.is-active{background:#ede9fe;color:#6d28d9}.course-media-gallery-toolbar button.is-ratio-control.is-active{background:#fce7f3;color:#be185d}.course-media-gallery-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:14px}.course-media-gallery.layout-grid-3 .course-media-gallery-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.course-media-gallery.layout-grid-4 .course-media-gallery-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.course-media-gallery-add,.course-media-gallery-empty,.course-media-gallery-item{position:relative;min-width:0;margin:0;overflow:hidden;border-radius:8px}.course-media-gallery.ratio-video .course-media-gallery-add,.course-media-gallery.ratio-video .course-media-gallery-empty,.course-media-gallery.ratio-video .course-media-gallery-item{aspect-ratio:16/9}.course-media-gallery.ratio-portrait .course-media-gallery-add,.course-media-gallery.ratio-portrait .course-media-gallery-empty,.course-media-gallery.ratio-portrait .course-media-gallery-item{aspect-ratio:9/16}.course-media-gallery.ratio-square .course-media-gallery-add,.course-media-gallery.ratio-square .course-media-gallery-empty,.course-media-gallery.ratio-square .course-media-gallery-item{aspect-ratio:1}.course-media-gallery.ratio-auto .course-media-gallery-add,.course-media-gallery.ratio-auto .course-media-gallery-empty{min-height:148px}.course-media-gallery-item{border:1px solid rgba(229,231,235,.92);background:#111017;box-shadow:0 4px 14px rgba(30,25,45,.08)}.course-media-gallery-upload{min-width:0;grid-column:1/-1}.course-media-gallery-upload>*{margin:0}.course-media-gallery-batch{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px 16px;padding:14px 16px;border:1px solid rgba(221,214,254,.9);border-radius:8px;background:linear-gradient(135deg,rgba(250,248,255,.96),rgba(253,242,248,.92));color:#3f3653}.course-media-gallery-batch-copy{display:grid;min-width:0;gap:3px}.course-media-gallery-batch-copy strong{font-size:13px;font-weight:700}.course-media-gallery-batch-copy span{overflow:hidden;color:#7b728d;font-size:12px;text-overflow:ellipsis;white-space:nowrap}.course-media-gallery-batch-progress{height:4px;grid-column:1/-1;overflow:hidden;border-radius:99px;background:rgba(124,58,237,.12)}.course-media-gallery-batch-progress i{display:block;height:100%;border-radius:inherit;background:linear-gradient(90deg,#8b5cf6,#ec4899);transition:width .18s ease}.course-media-gallery-batch-actions{display:flex;gap:6px}.course-media-gallery-batch-actions button{min-height:30px;padding:0 10px;border:1px solid rgba(124,58,237,.2);border-radius:7px;background:hsla(0,0%,100%,.78);color:#6d28d9;cursor:pointer;font-size:12px;font-weight:650}.course-media-gallery-batch-actions button:focus-visible,.course-media-gallery-batch-actions button:hover{border-color:rgba(124,58,237,.38);background:#fff;outline:none}.course-media-gallery-item img,.course-media-gallery-item video{display:block;width:100%;height:auto;-o-object-fit:contain;object-fit:contain}.course-media-gallery:not(.ratio-auto) .course-media-gallery-item img,.course-media-gallery:not(.ratio-auto) .course-media-gallery-item video{height:100%;-o-object-fit:cover;object-fit:cover}.course-media-gallery-item img{-webkit-user-select:none;-moz-user-select:none;user-select:none}.course-media-gallery-remove{position:absolute;z-index:12;top:var(--v2-space-2);right:var(--v2-space-2)}.course-media-gallery-add,.course-media-gallery-empty{display:flex;align-items:center;justify-content:center;border:1px dashed #d1d5db;background:hsla(0,0%,100%,.66);color:#9ca3af}.course-media-gallery-add{gap:22px}.course-media-gallery-add button{display:inline-flex;min-width:68px;flex-direction:column;align-items:center;gap:6px;padding:9px;border:0;border-radius:7px;background:transparent;color:#7b8190;cursor:pointer}.course-media-gallery-add button span{display:inline-flex;align-items:center;gap:2px;font-size:12px;font-weight:650}.course-media-gallery-add button:focus-visible,.course-media-gallery-add button:hover{background:#f5f3ff;color:#6d28d9;outline:none}.course-media-gallery-add button:disabled{cursor:wait;opacity:.55}.course-media-gallery-error{margin:8px 2px 0;color:#dc2626;font-size:12px}.course-media-gallery .is-spinning{animation:course-gallery-spin .8s linear infinite}@keyframes course-gallery-spin{to{transform:rotate(1turn)}}.course-embed-frame{display:block;width:100%;min-height:420px;margin:26px 0;border:0;border-radius:8px;background:#f3f4f6}@keyframes course-gapcursor-blink{0%,45%{opacity:1}50%,to{opacity:.18}}@media (prefers-reduced-motion:reduce){.course-document-surface .ProseMirror-gapcursor:after{animation:none}.course-media-frame,.course-media-gallery,.course-media-gallery-toolbar,.course-media-resize-handle,.course-media-toolbar{transition:none}.course-media-gallery .is-spinning{animation:none}.course-media-gallery-batch-progress i{transition:none}}.course-callout{position:relative;margin:22px 0;padding:17px 20px 17px 24px;border-radius:8px;background:var(--course-document-accent-soft,rgba(124,58,237,.065));color:var(--course-document-ink,#342456)}.course-callout-mark,.course-callout:before{position:absolute;top:16px;bottom:16px;left:0;width:4px;border-radius:3px;background:var(--course-document-accent,#8b5cf6);content:""}.course-callout-content>:first-child{margin-top:0}.course-callout-content>:last-child{margin-bottom:0}.course-prompt-block{position:relative;margin:24px 0;border-radius:10px}.course-prompt-block.is-selected{box-shadow:0 0 0 2px #8b5cf6}.course-prompt-editor-card,.course-prompt-reader{position:relative;display:flex;height:auto;max-height:min(500px,72vh);min-height:0;flex-direction:column;overflow:hidden;padding:18px;border:1px solid var(--course-document-border,#ddd6fe);border-radius:10px;background:var(--course-document-soft,#f7f4ff);box-shadow:none}.course-prompt-block.is-public .course-prompt-editor-card{border-color:#e5e7eb;background:#f9fafb;box-shadow:none}.course-prompt-editor-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:12px}.course-prompt-status{display:inline-flex;align-items:center;gap:5px;padding:3px 8px;border-radius:5px;background:#ede9fe;color:#6d28d9;font-size:11px;font-weight:750;letter-spacing:0}.course-prompt-block.is-public .course-prompt-status{background:#e5e7eb;color:#6b7280}.course-prompt-lock-toggle{display:inline-flex;min-height:36px;align-items:center;padding:0 8px;border:0;border-radius:6px;background:transparent;color:#6b7280;cursor:pointer;font-size:12px;font-weight:650}.course-prompt-lock-toggle:focus-visible,.course-prompt-lock-toggle:hover{background:#f3f0ff;color:#6d28d9;outline:none}.course-prompt-content{display:block;flex:0 1 auto;width:100%;min-height:0;overflow-y:auto;padding:13px 14px;border:1px solid #eceaf1;border-radius:8px;background:#fff;color:#1f2937;font-size:14px;line-height:1.75;outline:none;overscroll-behavior:contain}.course-prompt-editor-card .course-prompt-content:focus-within{border-color:#c4b5fd;box-shadow:0 0 0 3px rgba(139,92,246,.1)}.course-prompt-editor-card .course-prompt-content>:first-child,.course-prompt-reader .course-prompt-content>:first-child{margin-top:0}.course-prompt-editor-card .course-prompt-content>:last-child,.course-prompt-reader .course-prompt-content>:last-child{margin-bottom:0}.course-prompt-reader .course-prompt-content{position:relative;z-index:1;min-height:0;padding:0;border:0;background:transparent;color:var(--course-document-ink,#342456);overflow-wrap:anywhere}.course-prompt-content.is-redacted{display:none}.course-prompt-block.is-masked .course-prompt-reader{height:auto;max-height:none;min-height:0;padding:0;border:0;background:transparent;box-shadow:none;overflow:visible}.course-locked-content{position:relative;display:inline-grid;isolation:isolate;width:100%;height:160px;min-height:44px;margin-block:8px;padding:18px 22px;overflow:hidden;vertical-align:middle;box-sizing:border-box;border:1px solid #e8dfe3;border-radius:12px;background:#f3ecef;color:var(--v2-text-primary,#303044);font-family:inherit;font-size:16px;font-weight:500;line-height:1.6;text-align:center;cursor:pointer;touch-action:manipulation;transition:background .15s ease,border-color .15s ease}.course-locked-placeholder{position:absolute;inset:16px 22px;display:grid;grid-template-rows:repeat(4,1fr);gap:4px;color:#a58394;font-size:16px;line-height:28px;text-align:left;filter:blur(5px);opacity:.65;pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.course-locked-placeholder>span{display:block;overflow:hidden;white-space:nowrap}.course-locked-label{position:relative;z-index:1;place-self:center;padding:8px 16px;border-radius:8px;background:rgba(243,236,239,.78);color:inherit}.course-locked-content:hover{background:#eee3e8;border-color:#d7c2cc}.course-locked-content:focus-visible{outline:2px solid #866675;outline-offset:3px}.course-locked-content:disabled{cursor:default}.course-locked-focus{display:inline;max-width:100%;padding:0 .1em;border:0;border-radius:.18em;background:#f3ecef;color:#a58394;font:inherit;line-height:inherit;text-align:inherit;white-space:pre-wrap;overflow-wrap:anywhere;cursor:pointer;touch-action:manipulation}.course-locked-focus>span{display:inline;filter:blur(2.5px);pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none}.course-locked-focus:hover{background:#eee3e8}.course-locked-focus:focus-visible{outline:2px solid #866675;outline-offset:2px}.course-locked-focus:disabled{cursor:default}@media (prefers-reduced-motion:reduce){.course-locked-content{transition:none}}.course-focus-mark{display:inline;padding:.04em .12em;border:0;border-radius:.2em;font:inherit;line-height:inherit;letter-spacing:0}.course-focus-mark.is-editor{background:rgba(124,58,237,.1);box-shadow:inset 0 -1px 0 rgba(109,40,217,.34);color:inherit}.course-prompt-reader-actions{position:absolute;z-index:3;top:10px;right:10px;display:flex;align-items:center;gap:2px;padding:4px;border:1px solid rgba(221,214,254,.88);border-radius:9px;background:hsla(0,0%,100%,.94);box-shadow:0 3px 8px rgba(76,29,149,.1);opacity:0;pointer-events:none;transform:translateY(-4px);transition:opacity .15s ease,transform .15s ease}.course-prompt-reader:focus-within .course-prompt-reader-actions,.course-prompt-reader:hover .course-prompt-reader-actions{opacity:1;pointer-events:auto;transform:translateY(0)}.course-prompt-action{position:relative;display:inline-grid;width:36px;height:36px;flex:0 0 auto;place-items:center;padding:0;border:1px solid transparent;border-radius:9px;background:transparent;color:var(--course-document-muted,#76658f);cursor:pointer;touch-action:manipulation;transition:background-color .15s ease,border-color .15s ease,color .15s ease}.course-prompt-action-icon{display:grid;place-items:center;transition:transform .16s ease}.course-prompt-action svg{width:17px;height:17px;stroke-width:1.9}.course-prompt-action:focus-visible,.course-prompt-action:hover:not(:disabled){border-color:rgba(196,181,253,.74);background:#f3f0ff;color:#6d28d9;outline:none}.course-prompt-action:focus-visible .course-prompt-action-icon,.course-prompt-action:hover:not(:disabled) .course-prompt-action-icon{transform:scale(1.08)}.course-prompt-action[data-tone=copy][data-feedback=true]{color:#15803d}.course-prompt-action[data-tone=favorite][data-selected=true]{color:#b77900}.course-prompt-action[data-tone=favorite][data-selected=true] .course-prompt-action-icon{animation:course-prompt-bookmark .24s ease-out}.course-prompt-action[data-tone=personal][data-selected=true]{border-color:rgba(196,181,253,.72);background:#ede9fe;color:#6d28d9}.course-prompt-action:disabled:not([data-selected=true]){cursor:wait;opacity:.48}.course-prompt-action:disabled[data-selected=true]{cursor:default;opacity:1}.course-prompt-action-tooltip{position:fixed;z-index:var(--v2-z-tooltip);width:-moz-max-content;width:max-content;max-width:min(12rem,calc(100vw - 24px));padding:5px 8px;border-radius:5px;background:#342456;box-shadow:0 3px 8px rgba(52,36,86,.18);color:#fff;font-size:12px;font-weight:600;line-height:1.3;opacity:0;pointer-events:none;transition:opacity .13s ease;white-space:nowrap}.course-prompt-action-tooltip[data-ready]{opacity:1}@keyframes course-prompt-bookmark{50%{transform:scaleY(.68)}to{transform:scaleY(1)}}@media (hover:none),(pointer:coarse){.course-prompt-reader-actions{opacity:1;pointer-events:auto;transform:none}.course-prompt-action{width:44px;height:44px}}@media (prefers-reduced-motion:reduce){.course-prompt-action,.course-prompt-action-icon,.course-prompt-action-tooltip,.course-prompt-reader-actions{transition:none}.course-prompt-action[data-tone=favorite][data-selected=true] .course-prompt-action-icon{animation:none}}@media (max-width:760px){.course-document-surface{--course-document-font-size:16px;padding-inline:0}.course-document-surface.ProseMirror{padding:32px 18px 88px}.course-media-gallery,.course-media-node{margin-block:20px}.course-media-frame{width:100%!important}.course-media-element{width:100%;max-height:min(72dvh,42rem);-o-object-fit:contain;object-fit:contain}.course-locked-content{height:144px;padding:14px;font-size:14px}.course-locked-placeholder{inset:14px;font-size:14px;line-height:24px}.course-locked-label{padding:8px 10px}.course-media-gallery.layout-grid-3 .course-media-gallery-grid,.course-media-gallery.layout-grid-4 .course-media-gallery-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.course-prompt-editor-card,.course-prompt-reader{max-height:min(560px,72dvh)}}@media (max-width:520px){.course-media-gallery-grid,.course-media-gallery.layout-grid-3 .course-media-gallery-grid,.course-media-gallery.layout-grid-4 .course-media-gallery-grid{grid-template-columns:minmax(0,1fr)}}.media-upload-task{display:grid;width:min(100%,46rem);min-width:0;grid-template-columns:8.75rem minmax(0,1fr);gap:1rem;margin:1rem auto;padding:1rem;border:1px solid var(--v2-border-default);border-radius:var(--v2-radius-sm);background:var(--v2-surface-raised);color:var(--v2-text-primary);box-shadow:var(--v2-shadow-1)}.media-upload-task[data-stage=error]{border-color:var(--v2-status-danger-border)}.media-upload-task[data-stage=ready]{border-color:var(--v2-status-success-border);background:color-mix(in srgb,var(--v2-status-success-bg) 58%,var(--v2-surface-raised))}.media-upload-task-preview{position:relative;display:grid;min-width:0;aspect-ratio:16/10;place-items:center;overflow:hidden;border-radius:var(--v2-radius-xs);background:var(--v2-surface-sunken);color:var(--v2-text-tertiary)}.media-upload-task-preview img,.media-upload-task-preview video{display:block;width:100%;height:100%;-o-object-fit:cover;object-fit:cover}.media-upload-task-preview-state{position:absolute;inset:0;display:grid;place-items:center;background:color-mix(in srgb,var(--v2-surface-inverse) 24%,transparent);color:var(--v2-text-inverse)}.media-upload-task-body{display:grid;min-width:0;align-content:center;gap:.65rem}.media-upload-task-actions,.media-upload-task-heading,.media-upload-task-meta,.media-upload-task-progress-row,.media-upload-task-stage{display:flex;min-width:0;align-items:center}.media-upload-task-heading{justify-content:space-between;gap:1rem}.media-upload-task-stage{gap:.45rem;color:var(--v2-text-primary);font-size:var(--v2-type-size-sm);font-weight:var(--v2-type-weight-semibold)}.media-upload-task-actions{flex:0 0 auto;flex-wrap:wrap;gap:var(--v2-space-1)}.media-upload-task-file-name{overflow:hidden;color:var(--v2-text-secondary);font-size:var(--v2-type-size-sm);font-weight:var(--v2-type-weight-medium);text-overflow:ellipsis;white-space:nowrap}.media-upload-task-progress-row{gap:.75rem}.media-upload-task-track{position:relative;height:.38rem;min-width:0;flex:1;overflow:hidden;border-radius:var(--v2-radius-pill);background:var(--v2-surface-sunken)}.media-upload-task-track span{display:block;width:100%;height:100%;border-radius:inherit;background:var(--v2-brand-primary);transform-origin:left center;transition:transform var(--v2-motion-base) var(--v2-ease-out)}.media-upload-task-percent{width:3rem;flex:0 0 3rem;color:var(--v2-brand-primary);font-size:var(--v2-type-size-sm);font-variant-numeric:tabular-nums;text-align:right}.media-upload-task-meta{flex-wrap:wrap;justify-content:space-between;gap:.35rem 1rem;color:var(--v2-text-tertiary);font-size:var(--v2-type-size-xs);font-variant-numeric:tabular-nums}.media-upload-task-error{margin:0;color:var(--v2-status-danger-text);font-size:var(--v2-type-size-xs);line-height:1.5}.media-upload-task-spin{animation:media-upload-task-spin .8s linear infinite}@keyframes media-upload-task-spin{to{transform:rotate(1turn)}}@media (max-width:600px){.media-upload-task{grid-template-columns:5.5rem minmax(0,1fr);gap:.75rem;padding:.75rem}.media-upload-task-heading{align-items:flex-start;flex-direction:column;gap:.35rem}.media-upload-task-actions{width:100%;justify-content:flex-end}}@media (prefers-reduced-motion:reduce){.media-upload-task-spin{animation:none}.media-upload-task-track span{transition:none}}