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button:disabled{cursor:not-allowed}.utility-page button:disabled:not([data-practice-option]){opacity:.45}.utility-page textarea{background:var(--surface);font:400 var(--text-base)/1.65 system-ui,sans-serif;min-height:160px}.utility-page textarea:focus,.workspace-content textarea:focus:not(.composer-input-row textarea){box-shadow:none;outline:2px solid var(--muted);outline-offset:2px;border-color:#0000}.utility-page [data-practice-option][aria-pressed=true]:not(:disabled){border-color:var(--secondary);background:var(--raised);box-shadow:inset 3px 0 var(--secondary)}.utility-page [data-practice-option]{line-height:1.65}.reading-table-header{font:var(--text-sm)/1.5 system-ui,sans-serif;color:var(--muted);justify-content:space-between;align-items:center;gap:12px;margin-top:24px;display:flex}.reading-table-header button{min-height:44px;color:var(--secondary);align-items:center;gap:8px;display:flex}.reading-table-scroll{overscroll-behavior-x:contain;overscroll-behavior-y:auto;border:1px solid var(--line);border-radius:8px;max-width:100%;margin:8px 0 24px;overflow:auto}.reading-table-scroll table,.reading-content .reading-table-scroll table{border-collapse:separate;border-spacing:0;width:100%;min-width:700px;font:var(--text-base)/1.6 system-ui,sans-serif;margin:0;display:table}.reading-table-scroll :is(td,th),.reading-content .reading-table-scroll :is(td,th){vertical-align:top;border:0;border-bottom:1px solid var(--line);color:var(--secondary);padding:14px 16px}.reading-table-scroll th{background:var(--raised);color:var(--ink);z-index:2;text-align:left;font-weight:600;position:sticky;top:0}.reading-table-scroll :is(td,th):first-child{background:var(--surface);z-index:1;border-right:1px solid var(--line);min-width:136px;position:sticky;left:0}.reading-table-scroll th:first-child{z-index:3;background:var(--raised)}.table-dialog{background:var(--surface);width:calc(100vw - 64px);max-width:1400px;height:calc(100dvh - 64px);max-height:none;color:var(--ink);border:1px solid var(--line);border-radius:16px;margin:auto;padding:24px;position:fixed;inset:0}.table-dialog[open]{flex-direction:column;display:flex}.table-dialog::backdrop{background:var(--color-overlay)}.table-dialog header{flex-shrink:0;justify-content:space-between;align-items:center;gap:16px;display:flex}.table-dialog header h2{font:var(--text-2xl)/1.25 Georgia,serif;margin:0}.table-dialog header button{min-height:44px;font:var(--text-md)/1.5 system-ui,sans-serif;align-items:center;gap:8px;padding:0 8px;display:flex}.table-dialog .reading-table-scroll{flex:1;min-height:0;margin-block:16px}.table-dialog>p{font:var(--text-sm)/1.5 system-ui,sans-serif;color:var(--muted);margin:0}@media(max-width:600px){.reading-action-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-action-strip .inline-strip-btn{font-size:var(--text-base)}.utility-page{padding:24px 16px}.table-dialog{border-radius:0;width:100%;height:100dvh;padding:16px}.table-dialog header{align-items:start}.table-dialog header h2{font-size:var(--text-2xl)}.table-dialog header button{max-width:140px}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-leading{syntax:"*";inherits:false}@property --tw-space-y-reverse{syntax:"*";inherits:false;initial-value:0}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}.learning-body:has(.reading-stage){background:var(--surface)}.learning-body .reading-stage{background:transparent}.learning-body:has(.reading-stage)>.center-pane,.learning-body:has(.reading-stage)>.context-workspace{background:transparent}.learning-body:has(.reading-stage)>.context-workspace{border:0}.reading-picture-ocr-placeholder{display:block;margin:12px 0;padding:10px 14px;border-left:3px solid var(--line);border-radius:4px;background:var(--surface);color:var(--secondary);font:500 var(--text-sm)/1.5 system-ui,sans-serif;-moz-user-select:none;user-select:none;-webkit-user-select:none}@media(min-width:901px)and (max-width:1399px){.learning-body:has(.reading-stage)>.context-workspace{width:352px;min-width:352px;max-width:352px;padding:24px 16px}}@media(min-width:1400px){.learning-body:has(.reading-stage){--article-width:clamp(min(640px,var(--reading-line)), calc(100vw - 780px) ,var(--reading-line));--companion-width:clamp(320px,22vw,380px);display:grid;grid-template-columns:104px minmax(0,1fr);grid-template-rows:auto;align-items:start}.learning-body:has(.reading-stage)>.global-nav{grid-column:1;grid-row:1;width:104px}.learning-body:has(.reading-stage)>.center-pane{grid-column:2;grid-row:1;width:100%}.learning-body:has(.reading-stage) .reading-column{width:var(--article-width);max-width:none;margin-left:calc((100% - var(--article-width) - 104px)/2);margin-right:0}.learning-body:has(.reading-stage)>.context-workspace{grid-column:2;grid-row:1;justify-self:end;width:var(--companion-width);min-width:0;max-width:none;margin-right:24px;padding:24px 0}}.reading-content .learner-highlight,.reading-content .source-words{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:.2em}.reading-topbar select{min-width:0;text-overflow:ellipsis;white-space:nowrap}.reader-word-picker{padding:var(--space-4);border:1px solid var(--line);margin-block:var(--space-3)}.reader-word-picker select{max-width:100%}.reader-word-picker [role=option][aria-selected=true]{outline:2px solid var(--ink);outline-offset:2px}:root{--user-highlight-default:var(--color-highlight);--attention-bg:var(--color-accent-bg);--attention-edge:var(--color-accent)}.learner-highlight{background:var(--user-highlight-default);color:inherit;border-radius:2px}.learning-attention-source{border-inline-start:3px solid var(--attention-edge);padding-inline-start:14px}.learning-attention{background:var(--attention-bg);border-inline-start:3px solid var(--attention-edge);padding:12px 16px;margin:16px 0;font:var(--text-md)/1.6 system-ui}.learning-attention summary{cursor:pointer;min-height:44px;display:flex;align-items:center}.learning-attention small{margin-left:12px}.reading-content .learning-attention p,.learning-attention p{font:var(--text-md)/1.6 system-ui}.study-undo{position:sticky;top:0;z-index:3}.memory-actions button{border:1px solid var(--line-strong);border-radius:7px;padding:8px 12px;min-height:44px}.memory-breadcrumb,.memory-empty{color:var(--muted);font:var(--text-md)/1.5 system-ui}.memory-object{padding:20px;overflow:auto;height:100%;font:var(--text-base)/1.7 system-ui}.memory-object h3{font:var(--text-xl)/1.4 Georgia}.memory-source{border-left:2px solid var(--muted);padding-left:12px;margin:16px 0;color:var(--secondary);font:var(--text-base)/1.6 Georgia}.memory-note{white-space:pre-wrap}.memory-actions{display:flex;gap:8px;margin:16px 0}.bookmark-control{display:flex;align-items:center;gap:8px;font:var(--text-md) system-ui;min-height:44px;margin-bottom:20px}.reading-action-strip{grid-template-columns:repeat(5,auto)}.highlight-action{border-right:1px solid var(--line)}@media(max-width:600px){.reading-action-strip{grid-template-columns:1fr 1fr}.highlight-action{grid-column:1/-1;border-right:0;border-bottom:1px solid var(--line)}.memory-object{padding:16px}}.bookmark-control{position:sticky;top:76px;z-index:2;background:var(--surface);border:1px solid var(--line-strong);border-radius:8px;padding:0 12px;width:-moz-fit-content;width:fit-content}@media(max-width:900px){.bookmark-control{top:0}}.study-collection-tools .study-actions{align-items:center}.study-editor{scroll-margin-block:12px}.workspace-content>.study-editor.is-contextual{padding-inline:16px}.study-editor :is(input,textarea,select,summary){scroll-margin-block:12px}@media(min-height:651px){.study-editor .study-editor-footer{position:sticky;bottom:0;z-index:2;background:var(--surface);padding-block:12px;margin-top:12px;box-shadow:0 -8px 12px var(--surface)}.study-editor :is(input,textarea,select,summary){scroll-margin-bottom:80px}}@media(max-width:600px),(max-height:500px){.learning-body>.global-nav{position:relative;overflow:visible}.global-nav .nav-destination{flex:1 1 0;min-width:0}.global-nav .nav-destination span{font-size:var(--text-xs);line-height:var(--leading-tight);white-space:normal;text-align:center;overflow-wrap:anywhere}.global-nav .nav-more.is-current-within{color:var(--color-text);background:var(--color-raised);box-shadow:inset 0 2px 0 var(--color-accent)}.nav-more-sheet{position:absolute;right:var(--space-2);bottom:calc(100% + var(--space-2));z-index:40;display:flex;flex-direction:column;min-width:200px;padding:var(--space-2);border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:0 8px 24px var(--color-overlay)}.nav-more-sheet[hidden]{display:none}.nav-more-item{display:flex;align-items:center;gap:var(--space-3);min-height:var(--touch-target);padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);color:var(--color-text-secondary);font-size:var(--text-base);text-align:left}.nav-more-item:hover,.nav-more-item[aria-current]{color:var(--color-text);background:var(--color-raised)}}@media(min-width:601px){.global-nav .nav-destination.nav-group-start{position:relative;margin-top:var(--space-4)}.global-nav .nav-destination.nav-group-start:before{content:"";position:absolute;top:calc(-1 * var(--space-2) - 1px);left:25%;right:25%;border-top:1px solid var(--color-border)}}.app-shell{background:var(--paper);height:100dvh}.app-header{height:60px;display:flex;align-items:center;padding:0 29px;border-bottom:1px solid var(--line);flex-shrink:0;gap:20px;background:var(--surface)}.brand{display:flex;align-items:center;gap:13px;font-size:var(--text-xl);font-weight:650;letter-spacing:-1.2px;color:var(--ink);text-decoration:none;min-height:44px;flex-shrink:0}.brand-light{font-weight:350}.brand-mark{font:italic var(--text-display) Georgia,serif;letter-spacing:-6px;transform:translateY(-3px);margin-right:6px}.brand-mark>span{color:var(--muted)}.header-right{margin-left:auto;display:flex;align-items:center;gap:8px;min-width:0}.global-nav{width:104px;flex-shrink:0;display:flex;flex-direction:column;border-right:1px solid var(--line);background:var(--surface);padding:24px 10px;gap:10px}.global-nav .nav-destination{color:var(--muted);padding:14px 4px;border-radius:10px;margin:0;gap:8px;background:transparent;min-height:74px}.global-nav .nav-destination:hover,.global-nav .nav-destination[aria-current]{color:var(--ink);background:var(--raised)}.global-nav .nav-destination svg{stroke-width:1.4;width:23px;height:23px}.global-nav .nav-destination span{font-size:var(--text-md);font-weight:500;line-height:1.3}@media(max-width:760px){.app-header{padding:0 18px;height:60px}.global-nav{width:80px;padding:18px 4px}.global-nav .nav-destination span{font-size:var(--text-xs)}}@media(min-width:601px)and (max-height:820px){.learning-body>.global-nav{overflow-y:auto;padding-block:12px;gap:4px}.global-nav .nav-destination{min-height:44px;padding:6px 4px;gap:4px}.global-nav .nav-destination svg{width:20px;height:20px}.global-nav .nav-destination.nav-group-start{margin-top:var(--space-2)}}@media(min-width:601px)and (max-height:500px){.learning-body>.global-nav{position:sticky;z-index:50;top:0;max-height:calc(100dvh - 60px);overflow-y:auto}.global-nav .nav-destination{flex:0 0 44px;min-height:44px}.global-nav .nav-destination.nav-group-start{margin-top:0}.global-nav .nav-destination.nav-group-start:before{display:none}.nav-more-sheet{position:fixed;inset:60px auto auto 104px;max-height:calc(100dvh - 70px);overflow:auto}}.context-workspace{width:clamp(360px,32vw,480px);max-width:480px;min-width:360px;flex-shrink:0;min-height:0;padding:24px 20px;overflow:hidden;background:var(--surface)}.workspace-topic{flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:4px;height:44px;padding:0 8px 0 16px;color:var(--secondary);font-size:var(--ui-meta)}@media(max-width:900px){.context-workspace{grid-column:2;grid-row:2;width:100%;max-width:none;min-width:0;padding:10px 14px;border-top:1px solid var(--line)}}@media(max-width:600px){.app-header{height:56px;gap:10px;padding-inline:12px}.global-nav .nav-destination{flex:1;min-width:0;min-height:56px;padding:6px 2px;gap:3px}.global-nav .nav-destination svg{width:20px;height:20px}.global-nav .nav-destination span{font-size:var(--text-xs);margin-top:0}.context-workspace{grid-column:1;grid-row:2;padding:4px 8px}}.workspace-space-toggle{display:flex;align-items:center;gap:6px;min-height:44px;padding:0 8px;border-radius:6px;color:var(--secondary);font-size:var(--text-sm);white-space:nowrap}.workspace-space-toggle:hover{background:var(--color-tint);color:var(--ink)}.app-data-menu{position:relative;flex:none}.app-data-menu>summary{list-style:none;width:44px;height:44px;display:flex;align-items:center;justify-content:center;cursor:pointer;border-radius:8px}.app-data-menu>summary::-webkit-details-marker{display:none}.app-data-menu>summary:hover{background:var(--raised)}.app-data-menu>summary:focus-visible,.app-data-menu button:focus-visible{outline:2px solid var(--status-preview-fg);outline-offset:2px}.app-data-menu-panel{position:absolute;right:0;top:calc(100% + 8px);width:min(310px,calc(100vw - 24px));padding:16px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 30px var(--color-shadow);z-index:100;font-size:var(--text-md);line-height:1.5}.app-data-menu-panel p{color:var(--muted);margin:8px 0 12px}.app-data-menu-panel button{width:100%;min-height:44px;text-align:left;padding:10px;border:1px solid var(--line-strong);border-radius:6px}@media(max-width:650px){.header-right{flex:1}.header-right .global-search{min-width:0;width:auto;flex:1}}.global-search-wrap{position:relative;width:320px;flex:0 1 320px;min-width:0}.global-search{display:flex;align-items:center;gap:8px;border:1px solid var(--line-strong);border-radius:8px;padding:0 10px;min-height:44px;width:320px}.global-search input{background:transparent;min-width:0;width:100%;min-height:44px;font:var(--text-md) system-ui;color:var(--ink);outline:none}.global-search button{min-width:44px;min-height:44px;display:grid;place-items:center;flex-shrink:0;padding:0}.global-search-preview{position:absolute;top:calc(100% + 8px);right:0;width:min(460px,calc(100vw - 24px));max-height:min(70vh,560px);display:flex;flex-direction:column;overflow:hidden;padding:10px;background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:0 12px 34px var(--color-shadow);z-index:200}.global-search-preview-heading{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap;padding:8px 10px 10px;border-bottom:1px solid var(--line)}.global-search-preview-heading span{font:600 var(--text-sm)/1.4 system-ui;color:var(--ink)}.global-search-preview-heading small,.global-search-preview-status{font:var(--text-sm)/1.5 system-ui;color:var(--muted)}.global-search-preview-status{padding:12px 10px;margin:0}.global-search-preview-list{overflow-y:auto;overflow-x:hidden;flex:1;min-height:0}.global-search-preview-group{margin:8px 0 0;min-width:0}.global-search-preview-group h2{font:600 var(--text-xs)/1.4 system-ui;color:var(--muted);margin:10px 10px 4px}.global-search-preview .global-search-preview-row{display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;width:100%;min-width:0;min-height:0;padding:10px;border:0;border-radius:7px;text-align:left;gap:3px}.global-search-preview-row:hover,.global-search-preview-row[aria-selected=true]{background:var(--raised)}.global-search-preview-row strong,.global-search-preview-row small{display:block;max-width:100%;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.global-search-preview-row strong{font:500 var(--text-md)/1.45 system-ui;color:var(--ink)}.global-search-preview-row small{font:var(--text-sm)/1.45 system-ui;color:var(--muted)}.global-search-preview-row .search-result-topic{display:block;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font:var(--text-xs)/1.4 system-ui;color:var(--muted)}.global-search-preview-row mark{background:var(--attention-bg);color:inherit;border-radius:2px;padding:0 1px}.global-search-preview .global-search-preview-all{flex:0 0 auto;width:100%;min-height:44px;margin-top:8px;padding:8px 10px;border:0;border-top:1px solid var(--line);border-radius:0;text-align:left;color:var(--secondary);font:var(--text-sm)/1.5 system-ui}.global-search-preview-all:hover{background:var(--raised)}@media(max-width:600px){.global-search-wrap{width:auto;flex:1;min-width:0}.global-search-preview{position:fixed;top:64px;left:12px;right:12px;width:auto;max-width:none}.global-search-preview-row strong,.global-search-preview-row small{white-space:normal;overflow-wrap:anywhere}}@media(max-width:600px){.global-search{flex:1;min-width:0;padding:0 6px;gap:4px}}.brand:focus-visible{outline:2px solid 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