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transparent}.brand-text{font-weight:760;font-size:19px;letter-spacing:-.02em}.sidebar-nav{display:grid;gap:3px;padding:10px 8px}.nav-link{height:42px;border-radius:7px;display:flex;align-items:center;gap:11px;padding:0 11px;color:var(--muted);font-weight:600;transition:background .15s ease,color .15s ease}.nav-link:hover{background:var(--surface-2);color:var(--text)}.nav-link.active{background:color-mix(in srgb,var(--primary) 11%,var(--surface));color:var(--primary)}.sidebar-footer{margin-top:auto;padding:8px;border-top:1px solid var(--border)}.sidebar-action{width:100%;justify-content:flex-start}.sidebar-collapsed{grid-template-columns:60px minmax(0,1fr)}.sidebar-collapsed .sidebar{width:60px}.sidebar-collapsed .brand{padding:12px 11px}.sidebar-collapsed .brand-text,.sidebar-collapsed .nav-link span,.sidebar-collapsed .sidebar-action span{display:none}.sidebar-collapsed .nav-link,.sidebar-collapsed .sidebar-action{justify-content:center;padding:0}.main-content{grid-column:2;min-width:0;background:var(--surface)}.workspace-page{width:min(1180px,100%);margin:0 auto;padding:34px 40px 56px}.workspace-header{min-height:52px;display:flex;justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:24px}.workspace-title-row{min-width:0;display:flex;align-items:flex-start;gap:10px}.workspace-title-copy{min-width:0}.workspace-heading-line{display:flex;align-items:baseline;gap:10px}.workspace-header h1{margin:0;font-size:28px;line-height:1.25;letter-spacing:-.025em}.workspace-header p{margin:5px 0 0;color:var(--muted);line-height:1.5;font-size:15px}.workspace-count{color:var(--muted);font-size:15px;font-weight:500}.workspace-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}.icon-link{width:40px;height:40px;display:inline-grid;place-items:center;border-radius:7px;color:var(--muted);transition:background .15s ease,color .15s ease}.icon-link:hover{background:var(--surface-2);color:var(--text)}.entity-list{border-top:1px solid var(--border);outline:none}.entity-row{min-height:78px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:stretch;border-bottom:1px solid var(--border);transition:background .15s ease}.entity-row:hover{background:color-mix(in srgb,var(--surface-2) 70%,transparent)}.entity-row:focus-within{box-shadow:inset 3px 0 var(--primary)}.entity-row-content{min-width:0;display:flex}.entity-row-link{min-width:0;width:100%;display:grid;grid-template-columns:42px minmax(220px,1fr) 190px 138px;align-items:center;gap:16px;padding:11px 10px}.entity-row-actions{min-width:48px;display:flex;align-items:center;justify-content:flex-end;gap:6px;padding:8px 6px 8px 0}.entity-icon,.section-icon{width:42px;height:42px;border-radius:9px;display:inline-grid;place-items:center}.entity-icon svg,.section-icon svg{width:21px;height:21px}.entity-icon-primary{color:var(--primary);background:color-mix(in srgb,var(--primary) 10%,transparent)}.entity-icon-neutral{color:var(--muted);background:var(--surface-2)}.entity-icon-danger{color:var(--danger);background:color-mix(in srgb,var(--danger) 10%,transparent)}.entity-text{min-width:0;display:grid;gap:4px}.entity-text strong,.entity-text small{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.entity-text strong{font-size:16px;font-weight:650}.entity-text small,.entity-meta,.entity-time{color:var(--muted);font-size:14px}.entity-meta{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.entity-time{text-align:right;white-space:nowrap}.entity-tags{min-width:0;display:flex;gap:5px;overflow:hidden}.entity-tags em,.note-tags-detail span{color:var(--primary);background:color-mix(in srgb,var(--primary) 9%,var(--surface));padding:3px 7px;border-radius:5px;font-style:normal;font-size:13px;white-space:nowrap}.note-entity-link{grid-template-columns:42px minmax(240px,1fr) 92px minmax(130px,.45fr) 138px}.workspace-empty{min-height:230px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:32px 20px;color:var(--muted);text-align:center;border-top:1px solid var(--border)}.workspace-empty>svg{width:30px;height:30px;margin-bottom:3px}.workspace-empty strong{color:var(--text);font-size:17px}.workspace-empty .button{margin-top:10px}.workspace-loading{border-top:1px solid var(--border)}.workspace-loading-row{min-height:78px;display:grid;grid-template-columns:42px minmax(180px,1fr) 138px;align-items:center;gap:16px;border-bottom:1px solid var(--border);padding:11px 10px}.workspace-loading-row i,.workspace-loading-row b,.workspace-loading-row em{display:block;background:var(--surface-2);animation:workspace-pulse 1.2s ease-in-out infinite alternate}.workspace-loading-row i{width:42px;height:42px;border-radius:9px}.workspace-loading-row b{width:min(330px,80%);height:14px;border-radius:4px}.workspace-loading-row em{justify-self:end;width:92px;height:12px;border-radius:4px}@keyframes workspace-pulse{to{opacity:.45}}.color-blue{background:#e7f0ff;color:#2467c9}.color-green{background:#e3f5e9;color:#267a43}.color-orange{background:#fff0dc;color:#ad5a13}.color-purple{background:#f0e8fb;color:#7245aa}.color-red{background:#fde8e5;color:#bd443b}.color-gray{background:var(--surface-3);color:var(--muted)}.color-teal{background:#dff5f1;color:#15766b}.color-cyan{background:#def4fa;color:#14748c}.color-pink{background:#fbe7f1;color:#ad3d74}.color-yellow{background:#fff5cc;color:#8a6708}:root[data-theme=dark] .color-blue{background:#203655;color:#8bb8f6}:root[data-theme=dark] .color-green{background:#203d2b;color:#79c994}:root[data-theme=dark] .color-orange{background:#49331f;color:#efb574}:root[data-theme=dark] .color-purple{background:#382c4b;color:#c5a1eb}:root[data-theme=dark] .color-red{background:#482926;color:#ef958e}:root[data-theme=dark] .color-teal{background:#173f3b;color:#73cfc3}:root[data-theme=dark] .color-cyan{background:#173b46;color:#78cadd}:root[data-theme=dark] .color-pink{background:#482737;color:#e99abc}:root[data-theme=dark] .color-yellow{background:#463b18;color:#e7c85e}.note-tags-detail{display:flex;flex-wrap:wrap;gap:6px;margin:-8px 0 22px 50px}.markdown-body{font-size:17px;line-height:1.8;overflow-wrap:anywhere}.markdown-body h1{font-size:30px}.markdown-body h2{margin-top:34px;font-size:25px}.markdown-body h3{margin-top:28px;font-size:21px}.markdown-body .katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden;padding:4px 0}.markdown-body .katex-error{color:var(--danger);font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.markdown-body pre{overflow:auto;padding:14px;border:1px solid var(--border);border-radius:6px;background:#181a1e;color:#f2f3f5}.markdown-body code:not(pre code){padding:2px 5px;border-radius:4px;background:var(--surface-3)}.markdown-body table{width:100%;border-collapse:collapse;display:block;overflow:auto}.markdown-body th,.markdown-body td{min-width:120px;padding:8px;border:1px solid var(--border);text-align:left}.markdown-body img{max-width:100%;height:auto;border-radius:4px}.markdown-body blockquote{margin-left:0;padding-left:14px;border-left:3px solid var(--border-strong);color:var(--muted)}.attachment-link{border:0;background:transparent;color:var(--primary);padding:0;cursor:pointer;display:inline-flex;gap:4px}.attachment-link svg{width:14px;height:14px}.attachment-placeholder{color:var(--muted)}.attachments{margin-top:32px;border-top:1px solid var(--border);padding-top:18px}.attachments h2{font-size:16px}.attachments>button{width:100%;min-height:54px;display:grid;grid-template-columns:24px 1fr 24px;align-items:center;gap:8px;padding:8px 10px;text-align:left;border:1px solid var(--border);border-radius:6px;background:var(--surface);color:var(--text);cursor:pointer}.attachments>button span{display:grid;gap:2px}.attachments small{color:var(--muted)}.settings-list{border-top:1px solid var(--border)}.settings-row{min-height:104px;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:28px;padding:20px 4px;border-bottom:1px solid var(--border)}.settings-row h2{margin:0;font-size:17px}.settings-row p{margin:6px 0 0;color:var(--muted);line-height:1.5;font-size:14px}.scale-select{width:132px;min-width:0}.scale-select select{min-width:0}.segmented{width:fit-content;display:flex;padding:3px;background:var(--surface-2);border-radius:7px}.segmented button{height:36px;padding:0 14px;border:0;border-radius:5px;background:transparent;color:var(--muted);cursor:pointer}.segmented button.active{background:var(--surface);color:var(--text);box-shadow:0 1px 3px #0000001f}.card-deck{display:grid;gap:18px}.card-deck-toolbar{min-height:48px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:color-mix(in srgb,var(--surface-2) 58%,var(--surface))}.card-mode button{display:inline-flex;align-items:center;gap:7px;font-weight:650}.card-mode svg{width:17px;height:17px}.card-topic{flex:0 1 400px;min-width:250px;display:grid;grid-template-columns:max-content minmax(0,1fr);align-items:center;gap:9px;color:var(--muted);font-size:14px}.card-topic>span{white-space:nowrap}.card-topic select{width:100%;min-width:0;height:38px;padding:0 34px 0 10px}.card-browse-list{display:grid;gap:12px}.knowledge-card{border:1px solid var(--border-strong);border-radius:12px;background:var(--surface);box-shadow:0 3px 14px #1018280d;overflow:hidden}.knowledge-card>header{min-height:42px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 18px;border-bottom:1px solid var(--border);background:var(--surface-2);color:var(--muted);font-size:13px}.knowledge-card>header span{color:var(--primary);font-weight:700}.card-question{padding:18px 20px}.card-question .markdown-body{font-size:18px;font-weight:650;line-height:1.65}.card-question .markdown-body>:first-child,.card-answer .markdown-body>:first-child{margin-top:0}.card-question .markdown-body>:last-child,.card-answer .markdown-body>:last-child{margin-bottom:0}.card-answer{padding:17px 20px 20px;border-top:1px solid var(--border);background:color-mix(in srgb,var(--primary) 2.8%,var(--surface))}.card-answer .markdown-body{font-size:16px;line-height:1.75}.card-label{display:inline-block;margin-bottom:8px;color:var(--primary);font-size:13px;font-weight:750}.study-stage{width:min(780px,100%);margin:0 auto;display:grid;gap:14px}.study-progress{display:flex;justify-content:space-between;gap:16px;padding:0 4px;color:var(--muted);font-size:14px}.study-progress strong{color:var(--text)}.study-card{min-height:340px;display:flex;flex-direction:column;transition:border-color .15s ease,box-shadow .15s ease}.study-card.concealed{cursor:pointer}.study-card.concealed:hover,.study-card.concealed:focus-visible{border-color:color-mix(in srgb,var(--primary) 55%,var(--border));box-shadow:0 8px 28px #1018281a;outline:none}.study-card .card-question{padding:28px 28px 24px}.study-card .card-answer{flex:1;padding:22px 28px 28px}.answer-cover{flex:1;min-height:160px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;padding:28px;border-top:1px dashed var(--border-strong);color:var(--muted);text-align:center}.answer-cover svg{width:25px;height:25px;margin-bottom:3px;color:var(--primary)}.answer-cover strong{color:var(--text)}.answer-cover span{font-size:14px}.study-actions{display:grid;grid-template-columns:1fr auto 1fr;gap:10px}.study-actions .button:last-child{justify-self:end}.card-deck-empty{min-height:180px;display:grid;place-items:center;color:var(--muted)}.dialog-overlay{position:fixed;inset:0;z-index:100;background:#0000006b}.dialog-content{position:fixed;z-index:101;left:50%;top:50%;width:min(520px,calc(100vw - 32px));max-height:calc(100vh - 32px);overflow:auto;transform:translate(-50%,-50%);padding:22px;border:1px solid var(--border);border-radius:8px;background:var(--surface);box-shadow:var(--shadow)}.dialog-small{width:min(440px,calc(100vw - 32px))}.dialog-title{margin:0;font-size:18px;font-weight:700}.dialog-description{margin:6px 28px 18px 0;color:var(--muted);line-height:1.5}.dialog-close{position:absolute;right:10px;top:10px}.dialog-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:6px}.stack-form{display:grid;gap:16px;margin-top:18px}.tooltip{z-index:200;padding:6px 8px;border-radius:4px;background:#202124;color:#fff;font-size:12px}.mobile-bottom-nav{display:none}@container (max-width: 900px){.entity-row-link{grid-template-columns:42px minmax(180px,1fr) 138px}.entity-meta{display:none}.note-entity-link{grid-template-columns:42px minmax(200px,1fr) 138px}.note-entity-link .entity-meta,.note-entity-link .entity-tags{display:none}}@container (max-width: 700px){.app-frame,.sidebar-collapsed{display:block;padding-bottom:64px}.sidebar,.sidebar-collapsed .sidebar{display:none}.main-content{min-width:0}.workspace-page{padding:22px 16px 38px}.workspace-header{align-items:flex-start;gap:12px;margin-bottom:18px}.workspace-header h1{font-size:24px}.workspace-header p{font-size:14px}.workspace-actions{flex:0 0 auto}.workspace-actions .button{padding:0 10px}.workspace-actions .button svg{width:18px}.workspace-count{font-size:14px}.entity-row{min-height:76px}.entity-row-link,.note-entity-link{grid-template-columns:42px minmax(0,1fr);gap:12px;padding:10px 4px}.entity-meta,.entity-time,.entity-tags{display:none}.entity-row-actions{min-width:44px;padding-right:2px}.note-tags-detail{margin-left:0}.workspace-loading-row{grid-template-columns:42px minmax(0,1fr);padding:10px 4px}.workspace-loading-row em{display:none}.settings-row{grid-template-columns:1fr;gap:14px;padding:18px 2px}.scale-select{width:min(100%,240px)}.card-deck-toolbar{align-items:stretch;flex-direction:column}.card-mode{width:100%}.card-mode button{flex:1;justify-content:center}.card-topic{flex:none;min-width:0;width:100%}.card-topic select{min-width:0}.knowledge-card>header{padding:0 14px}.card-question,.study-card .card-question{padding:17px 16px}.card-answer,.study-card .card-answer{padding:16px}.card-question .markdown-body{font-size:17px}.study-card{min-height:300px}.answer-cover{min-height:145px;padding:22px 16px}.study-actions{grid-template-columns:1fr 1fr}.study-actions .button-primary{grid-column:1 / -1;grid-row:1}.study-actions .button:last-child{justify-self:stretch}.mobile-bottom-nav{position:fixed;z-index:18;left:0;right:0;bottom:0;height:64px;padding-bottom:env(safe-area-inset-bottom);border-top:1px solid var(--border);background:var(--surface);display:grid;grid-template-columns:repeat(3,1fr)}.mobile-bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;color:var(--muted);font-size:12px}.mobile-bottom-nav a.active{color:var(--primary)}.mobile-bottom-nav svg{width:22px;height:22px}}@container (max-width: 420px){.workspace-actions .button{font-size:0;width:38px;padding:0}.workspace-actions .button svg{width:18px}.workspace-title-row{min-width:0}.workspace-header h1,.workspace-header p{overflow-wrap:anywhere}.workspace-heading-line{gap:7px}}