:root{--brand-primary: #2a4cff;--brand-primary-strong: #1d38d8;--brand-secondary: #6e6bef;--brand-soft: #e6e9ff;--accent-success: #2fb67d;--accent-info: #4a7df0;--accent-warning: #f5b945;--canvas: #f7f8fa;--surface: #ffffff;--surface-muted: #f0f2f8;--surface-translucent: rgba(255, 255, 255, .72);--glass-border: rgba(255, 255, 255, .45);--text-strong: #1a1a1a;--text-body: #2e2f33;--text-muted: #5e5e5e;--text-subtle: #7c7f86;--border: #e5e5e5;--divider: rgba(17, 24, 39, .06);--shadow-lg: 0 35px 120px rgba(38, 52, 79, .12);--shadow-md: 0 18px 60px rgba(30, 41, 82, .08);--shadow-sm: 0 8px 28px rgba(23, 30, 56, .06);--shadow-inner: inset 0 1px 0 rgba(255, 255, 255, .7);--glow-brand: 0 0 0 1px rgba(42, 76, 255, .25), 0 15px 40px rgba(38, 67, 185, .24);--radius-xs: 6px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--radius-pill: 999px;--radius-full: var(--radius-pill);--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-7: 32px;--space-8: 40px;--transition-fast: .12s ease;--transition-base: .2s cubic-bezier(.2, .8, .2, 1);--transition-slow: .32s cubic-bezier(.16, 1, .3, 1);--glass-blur: 26px;--nav-width: 248px;--orange: var(--brand-primary);--orange-soft: var(--brand-soft);--bg: var(--canvas);--text: var(--text-body);--muted: var(--text-muted)}*,*:before,*:after{box-sizing:border-box}html{font-size:16px;font-family:SF Pro Display,SF Pro Text,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,sans-serif}body{margin:0;min-height:100vh;background:var(--canvas);color:var(--text-body);line-height:1.6;-webkit-font-smoothing:antialiased;font-feature-settings:"liga","tnum"}a{color:var(--brand-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--brand-primary-strong)}h1,h2,h3,h4,h5,h6{margin:0;color:var(--text-strong);font-weight:600;line-height:1.35;letter-spacing:.01em}h1{font-size:clamp(1.75rem,1.3rem + 1.5vw,2.25rem)}h2{font-size:clamp(1.25rem,1.1rem + .6vw,1.5rem)}h3{font-size:clamp(1rem,.95rem + .4vw,1.125rem);font-weight:500}p{margin:0;color:var(--text-body)}small{font-size:.85rem;color:var(--text-muted)}ul,ol{margin:0;padding-left:1.25rem}main{margin:0 auto;padding:var(--space-7) var(--space-6)}button,input,textarea,select{font:inherit;color:inherit}img{max-width:100%;height:auto}::selection{background:#2a4cff33;color:var(--text-strong)}.os-shell{display:grid;grid-template-columns:minmax(220px,var(--nav-width, 248px)) minmax(0,1fr);min-height:100vh;background:radial-gradient(circle at 10% 20%,rgba(110,107,239,.12),transparent 50%),radial-gradient(circle at 80% 0%,rgba(42,76,255,.1),transparent 55%),var(--canvas)}.side-nav{display:flex;flex-direction:column;gap:var(--space-6);padding:var(--space-7) var(--space-6);position:sticky;top:0;align-self:start;min-height:100vh;background:var(--surface-translucent);border-right:1px solid rgba(15,23,42,.08);box-shadow:16px 0 40px #0f121e14;-webkit-backdrop-filter:blur(var(--glass-blur));backdrop-filter:blur(var(--glass-blur));box-sizing:border-box}.side-resizer{position:absolute;top:0;right:-6px;width:12px;height:100%;cursor:col-resize;display:flex;align-items:center;justify-content:flex-end;opacity:.5;transition:opacity var(--transition-fast)}.side-resizer:after{content:"";width:3px;height:52px;border-radius:var(--radius-pill);background:#1a203a1f}.side-resizer:hover{opacity:.9}body.is-resizing-nav{cursor:col-resize;-webkit-user-select:none;user-select:none}.brand{display:flex;gap:var(--space-3);align-items:center;padding:14px 18px;border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.6);background:linear-gradient(135deg,#fffffff2,#f7f9ffcc);box-shadow:var(--shadow-inner),0 20px 55px #12182e1f;cursor:pointer;transition:transform var(--transition-base)}.brand:hover{transform:translateY(-2px)}.brand strong{font-size:1rem;display:block;letter-spacing:.02em}.brand .microcopy{margin:2px 0 0;color:var(--text-muted)}.logo-dot{width:18px;height:18px;border-radius:12px;background:linear-gradient(135deg,var(--brand-primary),var(--brand-secondary));box-shadow:0 0 16px #2a4cff73;flex-shrink:0}.side-links{display:flex;flex-direction:column;gap:6px}.side-divider{height:1px;background:linear-gradient(90deg,transparent,rgba(0,0,0,.08),transparent)}.side-tabs{display:flex;flex-direction:column;flex:1 1 auto;min-height:0;overflow-y:auto;padding-right:2px;gap:var(--space-3)}.tab-strip{display:flex;flex-direction:column;gap:10px}.tab-chip{border:1px solid transparent;background:#ffffff73;border-radius:var(--radius-lg);padding:10px 14px;display:flex;align-items:center;gap:10px;cursor:pointer;color:var(--text-muted);font-weight:500;box-shadow:var(--shadow-inner);transition:border-color var(--transition-base),background var(--transition-base),color var(--transition-base),box-shadow var(--transition-base)}.tab-chip:focus-visible{outline:none;box-shadow:0 0 0 2px #2a4cff59}.tab-chip:hover{color:var(--text-strong);border-color:#1a203a14}.tab-chip.active{background:var(--surface);color:var(--brand-primary);border-color:#2a4cff59;box-shadow:var(--shadow-sm)}.tab-chip.pinned .tab-chip-close{display:none}.tab-chip-icon{width:24px;height:24px;display:inline-flex;align-items:center;justify-content:center;font-size:14px}.ai-dialog{display:grid;grid-template-columns:minmax(300px,360px) minmax(0,1fr);grid-template-rows:minmax(0,1fr);gap:var(--space-6);height:100%;min-height:0;overflow:hidden}.ai-dialog-list-panel,.ai-dialog-stage{border-radius:var(--radius-lg);padding:26px;background:linear-gradient(180deg,#fffffff5,#f6f7ffeb);border:1px solid rgba(255,255,255,.65);box-shadow:var(--shadow-md);display:flex;flex-direction:column;gap:var(--space-4)}.ai-dialog-list-panel{min-height:min(680px,100%);overflow:hidden}.ai-dialog-list-panel>header{flex-shrink:0}.ai-dialog-list{display:flex;flex-direction:column;gap:var(--space-3);overflow-y:auto;padding-right:4px;flex:1 1 auto;min-height:0}.ai-dialog-record{border:1px solid transparent;border-radius:var(--radius-lg);padding:16px;background:#ffffffb3;display:flex;flex-direction:column;gap:10px;text-align:left;cursor:pointer;transition:border-color var(--transition-base),box-shadow var(--transition-base),transform var(--transition-fast),background var(--transition-base)}.ai-dialog-record:hover{border-color:#1a203a26;box-shadow:var(--shadow-sm);transform:translateY(-2px)}.ai-dialog-record.is-active{border-color:#2a4cff66;box-shadow:var(--glow-brand);background:#2a4cff14;color:var(--brand-primary)}.ai-dialog-record-title strong{font-size:16px}.ai-dialog-record-persona{font-size:13px;color:var(--text-muted)}.ai-dialog-tags{display:flex;flex-wrap:wrap;gap:8px}.ai-dialog-tags span{background:#f7f8ffe6;border-radius:var(--radius-pill);padding:4px 10px;font-size:12px;color:var(--text-muted);border:1px solid rgba(26,32,58,.08)}.ai-dialog-tags.compact span{background:transparent;border:1px dashed rgba(26,32,58,.12)}.ai-dialog-stage{min-height:min(680px,100%);overflow:hidden}.ai-dialog-player-head,.ai-dialog-meta{flex-shrink:0}.ai-dialog-player-head{display:flex;justify-content:space-between;gap:var(--space-4);align-items:flex-start}.ai-dialog-thinking{background:linear-gradient(135deg,#2a4cff1f,#6e6bef1a);border-radius:var(--radius-lg);padding:14px 18px;min-width:200px;box-shadow:var(--shadow-sm);border:1px solid rgba(42,76,255,.28)}.ai-dialog-thinking .label{font-weight:600;font-size:14px;color:var(--brand-primary)}.ai-dialog-thinking .dots{display:inline-flex;gap:6px;margin-left:8px}.ai-dialog-thinking .dots span{width:6px;height:6px;border-radius:50%;background:var(--brand-primary);opacity:.45;animation:ai-dialog-dots 1.2s infinite ease-in-out}.ai-dialog-thinking .dots span:nth-child(2){animation-delay:.15s}.ai-dialog-thinking .dots span:nth-child(3){animation-delay:.3s}.ai-dialog-meta{border:1px solid rgba(17,24,39,.06);border-radius:var(--radius-lg);padding:16px 20px;background:#ffffffd9;display:flex;flex-direction:column;gap:8px}.ai-dialog-meta-title{display:flex;align-items:center;gap:12px}.ai-dialog-meta-title .badge{background:#2a4cff1f;color:var(--brand-primary);padding:4px 10px;border-radius:var(--radius-pill);font-size:12px;font-weight:600}.ai-dialog-messages{flex:1 1 auto;min-height:0;border:1px solid rgba(17,24,39,.06);border-radius:var(--radius-lg);padding:22px;display:flex;flex-direction:column;gap:16px;overflow-y:auto;overscroll-behavior:contain;background:var(--surface);box-shadow:inset 0 1px #fff9}.ai-message{border:1px solid rgba(17,24,39,.08);border-radius:var(--radius-lg);background:#fff;padding:16px;display:flex;flex-direction:column;gap:10px;box-shadow:0 12px 24px #0f172a0f}.ai-message.ai{border-color:#2a4cff2e;background:var(--surface-muted)}.ai-message header{display:flex;justify-content:space-between;align-items:center;font-size:13px;color:var(--text-muted)}.ai-message-speaker{font-weight:600;color:var(--text-strong)}.ai-message-stamp{font-size:12px;text-transform:uppercase;letter-spacing:.08em}.ai-message-text{font-size:15px;line-height:1.65;white-space:pre-line}.ai-message-sources{list-style:none;margin:0;padding:8px 0 0;border-top:1px dashed rgba(15,23,42,.12);font-size:12px;color:var(--text-muted);display:flex;flex-direction:column;gap:4px}@keyframes ai-dialog-dots{0%{opacity:.1;transform:translateY(0)}50%{opacity:1;transform:translateY(-2px)}to{opacity:.1;transform:translateY(0)}}@media(max-width:1200px){.ai-dialog{grid-template-columns:1fr;height:auto}.ai-dialog-player-head{flex-direction:column}.ai-dialog-thinking{width:100%}.ai-dialog-list-panel,.ai-dialog-stage{height:auto;min-height:0}}@media(max-width:768px){.ai-dialog-list-panel,.ai-dialog-stage{padding:20px}.ai-dialog-messages{min-height:420px;max-height:none}}.tab-chip-title{flex:1;min-width:0;text-align:left;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tab-chip-close{border:none;background:transparent;padding:0;opacity:.7;font-size:18px;line-height:1;cursor:pointer}.tab-chip-close:hover{opacity:1}.tab-chip-pin{font-size:14px;opacity:.6}.tab-chip.is-dragging{opacity:.6}.tab-chip.is-drop-target{border-color:#2a4cff66;background:#2a4cff1a;color:var(--brand-primary)}.tab-strip-tail{height:32px;border:1px dashed transparent;border-radius:var(--radius-lg)}.tab-strip-tail.is-drop-target{border-color:#2a4cff66;background:#2a4cff14}.side-link{border:1px solid transparent;background:transparent;border-radius:16px;padding:12px 14px;display:flex;align-items:center;gap:12px;cursor:pointer;font-weight:500;color:var(--text-muted);transition:border-color var(--transition-base),color var(--transition-base),background var(--transition-base),box-shadow var(--transition-base)}.side-link .icon{width:36px;height:36px;border-radius:var(--radius-pill);font-size:0;display:inline-flex;align-items:center;justify-content:center;background:#ffffffc2;border:1px solid rgba(18,24,46,.05);box-shadow:var(--shadow-inner);transition:border-color var(--transition-base),background var(--transition-base),color var(--transition-base),box-shadow var(--transition-base)}.side-link .icon svg{width:18px;height:18px;stroke-width:1.8}.side-link:hover{color:var(--text-strong);border-color:#1a203a1a;background:#ffffff59}.side-link.active{background:#e2e5ffe6;border-color:#536aff73;color:var(--brand-primary);box-shadow:var(--shadow-sm)}.side-link.active .icon{background:#2a4cff1f;border-color:transparent;box-shadow:var(--glow-brand);color:var(--brand-primary)}.side-meta{margin-top:auto;padding:var(--space-5) var(--space-4);border-radius:var(--radius-lg);background:#ffffffe6;border:1px solid rgba(255,255,255,.55);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:var(--space-4)}.side-meta-name{font-size:15px;font-weight:600;line-height:1.4;color:var(--text-strong)}.side-meta-progress{display:flex;align-items:center;gap:var(--space-3)}.side-meta-progress-track{flex:1;height:6px;border-radius:var(--radius-pill);background:#0f172a14;overflow:hidden}.side-meta-progress-fill{height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--brand-primary),var(--brand-secondary));transition:width var(--transition-base)}.side-meta-label{font-size:12px;color:var(--text-muted)}.side-meta-value{font-size:13px;font-weight:600;color:var(--text-strong)}.side-meta-remaining{display:flex;justify-content:space-between;align-items:center}.side-meta-empty{display:flex;flex-direction:column;gap:var(--space-2);text-align:center}.side-meta-placeholder{font-size:13px;color:var(--text-muted)}.side-note-cta{border-top:1px dashed rgba(17,17,19,.08);padding-top:var(--space-4)}.side-note-button{width:100%;border:1px solid rgba(255,255,255,.7);border-radius:var(--radius-lg);background:linear-gradient(135deg,#2a4cff24,#6e6bef1f);color:var(--brand-primary);font-weight:600;padding:14px 18px;display:flex;align-items:center;justify-content:center;gap:10px;cursor:pointer;box-shadow:inset 0 1px #ffffff80,var(--shadow-sm);transition:transform var(--transition-fast),box-shadow var(--transition-fast)}.side-note-button:hover{transform:translateY(-1px);box-shadow:inset 0 1px #ffffffa6,var(--shadow-md)}.side-note-button .icon{width:20px;height:20px;display:inline-flex;align-items:center;justify-content:center}.main-stage{background:linear-gradient(180deg,#ffffffa6,#f7f8faf2);padding:var(--space-7);display:flex;flex-direction:column;gap:var(--space-6);min-height:100vh;height:100vh;overflow:auto;border-left:1px solid rgba(15,23,42,.04)}.main-stage>main{margin:0;padding:0;max-width:none;display:flex;flex-direction:column;gap:var(--space-6);flex:1 1 auto;min-height:0}.panel{background:var(--surface);border-radius:var(--radius-lg);padding:26px;box-shadow:var(--shadow-md);border:1px solid rgba(255,255,255,.7);display:flex;flex-direction:column;gap:var(--space-4)}.hero-goal{display:grid;grid-template-columns:1.3fr .7fr;gap:24px;align-items:center}.hero-stats{display:flex;gap:16px;justify-content:space-between}.goal-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}.goal-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;gap:16px}.goal-actions{display:flex;gap:12px;flex-wrap:wrap}.goal-progress progress{width:100%;height:8px}.goal-creation{display:flex;flex-direction:column;gap:24px}.goal-creation .creation-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.goal-creation .step-item{border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;display:flex;gap:12px;align-items:center;background:#fff}.goal-creation .step-index{width:32px;height:32px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-weight:700;border:1px solid var(--border)}.goal-creation .step-item[data-status=active]{border-color:var(--orange);box-shadow:0 10px 30px #11182714}.goal-creation .step-item[data-status=active] .step-index{background:var(--orange);color:#fff;border-color:var(--orange)}.goal-creation .step-item[data-status=done]{background:var(--orange-soft)}.creation-stage{display:flex;flex-direction:column;gap:24px}.stage-base{display:flex;flex-direction:column;gap:16px}.stack-card,.stage-materials .upload-shell,.stage-generation{border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;background:#fff;display:flex;flex-direction:column;gap:16px}.stage-base .card{border:none;padding:0;background:transparent}.stage-base .field{display:flex;flex-direction:column;gap:6px}.stage-base input,.stage-base select{border:1px solid var(--border);border-radius:var(--radius-md);padding:10px 12px;font-size:15px;font-family:inherit}.time-mode-toggle{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.time-mode-option{border:1px solid var(--border);border-radius:var(--radius-lg);padding:12px 16px;background:#f8fafc;display:flex;flex-direction:column;align-items:flex-start;gap:4px;font-weight:600;cursor:pointer;transition:border-color .2s ease,background .2s ease}.time-mode-option small{font-size:13px;color:var(--muted);font-weight:500}.time-mode-option.active{border-color:var(--orange);background:var(--orange-soft)}.time-body{display:flex;flex-direction:column;gap:10px}.preset-card .preset-summary{display:flex;flex-direction:column;gap:6px;margin-top:12px}.preset-hint{margin:0;font-size:13px;color:var(--muted)}.field-summary{text-align:center;font-size:14px;color:var(--muted);padding:4px 0 8px}.advanced-panel{display:flex;flex-direction:column;gap:16px}@media(min-width:900px){.advanced-panel{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}}.advanced-card{border:1px solid var(--border);border-radius:var(--radius-lg);background:linear-gradient(120deg,#f973160d,#fffc);padding:20px;display:flex;flex-direction:column;gap:14px}.advanced-card-head .title{margin:0;font-weight:700;font-size:16px}.advanced-card-head .microcopy{margin:0}.advanced-card-body{display:flex;flex-direction:column;gap:8px}.advanced-card-body .chip{width:100%;justify-content:flex-start;align-items:flex-start;flex-direction:column;gap:4px;text-align:left}.chip-title{font-size:14px}.chip-summary{font-size:12px;font-weight:500;color:var(--muted)}.stage-actions{display:flex;justify-content:flex-end;gap:12px;padding-top:8px;flex-wrap:wrap}.stage-materials{display:flex;flex-direction:column;gap:20px;align-items:center}.upload-shell{display:flex;flex-direction:column;gap:16px;width:100%;max-width:760px;align-items:center;text-align:center}.upload-shell .label,.upload-shell .microcopy{text-align:center}.upload-dropzone{border:1px dashed var(--border);border-radius:var(--radius-lg);padding:32px;background:#fafafa;display:flex;flex-direction:column;gap:12px;position:relative;transition:border-color .2s ease,background .2s ease;min-height:320px;justify-content:center;align-items:center;text-align:center;width:100%}.upload-dropzone.dragover{border-color:var(--orange);background:var(--orange-soft)}.upload-menu{position:absolute;top:12px;right:12px;display:none;flex-direction:column;border:1px solid var(--border);border-radius:var(--radius-md);background:#fff;box-shadow:0 16px 40px #1118271f;overflow:hidden;z-index:2}.upload-menu.open{display:flex}.upload-menu button{border:none;background:transparent;padding:12px 16px;text-align:left;font-weight:600;cursor:pointer}.upload-menu button+button{border-top:1px solid var(--border)}.tag-list{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.stage-generation{gap:20px}.generation-visual .progress-bar{width:100%;height:8px;border-radius:999px;background:var(--border);overflow:hidden}.generation-visual .progress-bar>div{height:100%;background:var(--orange);transition:width .3s ease}.generation-steps{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.generation-steps li{padding:8px 12px;border-radius:var(--radius-md);border:1px solid var(--border);font-weight:600}.generation-steps li[data-status=active]{border-color:var(--orange);background:var(--orange-soft)}.generation-steps li[data-status=done]{color:var(--muted);background:#f4f4f5}.generation-status{display:flex;align-items:center;gap:12px;font-weight:600}.option-row,.material-row{display:flex;flex-wrap:wrap;gap:8px}.goal-grid .microcopy{margin:0}.today-route .route-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}.route-item{border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;display:flex;justify-content:space-between;gap:16px}.route-meta{display:flex;flex-direction:column;gap:8px;align-items:flex-end}.grid-4{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.persona-panel{display:flex;flex-direction:column;gap:16px}.persona-metrics{display:flex;flex-wrap:wrap;gap:12px}.persona-metric{flex:1 1 160px;border:1px solid var(--border);border-radius:var(--radius-lg);padding:12px 16px;background:var(--surface)}.persona-tags{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.chip-row{display:flex;flex-wrap:wrap;gap:8px}.persona-chip{border-radius:999px;border:1px solid var(--border);padding:2px 12px;font-size:12px;background:#1118270a}.persona-chip.muted{opacity:.6}.strategy-card{border:1px dashed var(--border);border-radius:var(--radius-md);padding:12px 16px;background:#f9731614;display:flex;flex-direction:column;gap:6px}.persona-progress{display:flex;flex-direction:column;gap:6px}.persona-progress progress{width:100%;height:12px;border-radius:999px;background:transparent;border:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;overflow:hidden}.persona-progress progress::-webkit-progress-bar{background:#0f172a14;border-radius:999px}.persona-progress progress::-webkit-progress-value{background:linear-gradient(90deg,#16a34a,#22c55e);border-radius:999px;box-shadow:inset 0 0 4px #ffffff59}.persona-progress progress::-moz-progress-bar{background:linear-gradient(90deg,#16a34a,#22c55e);border-radius:999px}.progress-head{display:flex;justify-content:space-between;font-size:12px;color:var(--muted)}.task-tree .tree-node{border:1px solid var(--border);border-radius:var(--radius-md);padding:12px;display:flex;flex-direction:column;gap:8px;background:var(--surface)}.task-tree .node-body{display:flex;gap:16px;align-items:stretch}.task-tree .node-main{flex:1 1 auto;display:flex;flex-direction:column;gap:8px}.task-tree .tree-node+.tree-node{margin-top:10px}.task-tree .tree-node.complete{border-color:var(--success);background:#16a34a1f}.task-tree .node-header{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}.task-tree .node-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}.task-tree .node-meta-divider{width:1px;height:18px;background:var(--border);opacity:.6}.task-tree .node-meta-tags{display:flex;flex-wrap:wrap;gap:6px}.task-tree .node-eta{background:#1111130d;color:var(--text);padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}.task-tree .tree-node.complete .node-eta{background:#16a34a2e;color:var(--success)}.task-tree .node-actions{display:flex;flex-direction:column;align-items:flex-end;gap:8px;min-width:150px}.tag-chip{border-radius:999px;border:1px solid var(--border);padding:2px 10px;font-size:12px;font-weight:600;background:#1111130a}.tag-chip.tag-strategy{background:#f9731624;border-color:#f9731666}.tag-chip.tag-origin{background:#3b82f61f;border-color:#3b82f666}.tag-chip.tag-persona{background:#f472b629;border-color:#f472b666}.tag-chip.tag-benefit{background:#10b9811f;border-color:#10b98166}.node-section{margin-top:12px;padding-top:12px;border-top:1px dashed var(--border);display:flex;flex-direction:column;gap:6px}.section-label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.binding-list,.chunk-steps,.evidence-list{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:4px}.tree-children{display:flex;flex-direction:column;gap:8px;border-left:2px dashed var(--border);padding-left:12px;margin-left:6px}.task-tree .tree-node.complete>.tree-children{border-left-color:#16a34a99}.node-details-toggle{width:auto;border:1px solid transparent;border-radius:var(--radius-md);background:#1118270a;padding:6px 10px;font-weight:600;display:flex;justify-content:space-between;align-items:center;cursor:pointer;transition:background .2s ease,border-color .2s ease;color:var(--text);gap:6px}.node-details-toggle:hover{border-color:var(--border)}.node-details-toggle.collapsed{background:transparent}.node-toggle-icon{width:16px;height:16px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;line-height:0}.node-toggle-icon:after{content:"";width:8px;height:8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg);transition:transform .2s ease}.node-details-toggle.collapsed .node-toggle-icon:after{transform:rotate(-135deg)}.node-collapsible{overflow:hidden;transition:max-height .3s ease,opacity .3s ease;will-change:max-height;max-height:0;opacity:0;margin-top:8px}.node-collapsible:not(.collapsed){opacity:1}.node-collapsible.collapsed{margin-top:0}.task-tree .node-details{border-top:1px solid rgba(17,24,39,.08);padding-top:8px}.node-toggle{width:100%;border:1px solid transparent;border-radius:var(--radius-md);background:#1118270a;padding:6px 10px;font-weight:600;display:flex;justify-content:space-between;align-items:center;cursor:pointer;transition:background .2s ease,border-color .2s ease;color:var(--text)}.node-toggle:hover{border-color:var(--border)}.task-tree .benefit.high{background:#10b9812e;color:var(--success)}.task-tree .benefit.medium{background:#fbbf242e;color:#ca8a04}.task-tree .benefit.low{background:#94a3b84d;color:var(--muted)}.mock-exam-cta{margin-top:20px;padding:16px;border:1px dashed var(--border);border-radius:var(--radius-md);background:#11111308;display:flex;flex-direction:column;gap:12px;align-items:flex-start}.btn.slim{padding:6px 16px;font-size:13px}.learning-system{display:grid;grid-template-columns:minmax(0,var(--reader-percent, 58%)) 14px minmax(0,var(--notes-percent, 42%));gap:var(--space-6);align-items:stretch;position:relative}.learning-system-reader,.learning-system-notes{min-width:0;min-height:0;max-height:calc(100vh - 220px);overflow:auto;scrollbar-gutter:stable both-edges}.learning-system-reader .note-reader-card{min-height:0}.learning-system-reader .note-reader-preview,.learning-note-body{overflow:auto}.learning-system-notes{border:1px solid rgba(255,255,255,.65);border-radius:var(--radius-lg);background:linear-gradient(180deg,#fffffff5,#f5f7ffeb);padding:var(--space-5);display:flex;flex-direction:column;gap:var(--space-4);box-shadow:var(--shadow-md)}.learning-system-notes .note-empty{margin:0}.learning-system-handle{width:14px;cursor:col-resize;border-radius:var(--radius-md);background:transparent;position:relative}.learning-system-handle:after{content:"";position:absolute;top:12px;right:5px;bottom:12px;left:5px;border-radius:var(--radius-pill);background:#2a4cff3d;box-shadow:inset 0 0 0 1px #fff9}.learning-system.notes-collapsed{grid-template-columns:minmax(0,1fr)}.learning-system.notes-collapsed .learning-system-notes,.learning-system.notes-collapsed .learning-system-handle{display:none}.learning-system.notes-collapsed .note-panel-expander{display:inline-flex}.note-panel-header{display:flex;justify-content:space-between;gap:var(--space-4);align-items:flex-start}.note-panel-header .eyebrow{margin-bottom:2px}.note-panel-actions{display:flex;gap:8px;align-items:center}.note-panel-actions .btn[disabled]{opacity:.5;cursor:not-allowed}.learning-note-body{flex:1;min-height:0;overflow:auto;border:1px solid rgba(17,24,39,.08);border-radius:var(--radius-lg);padding:var(--space-4);background:var(--surface);box-shadow:inset 0 1px #fff9}.note-panel-expander{display:none;border:1px solid rgba(42,76,255,.35);background:#2a4cff14;border-radius:var(--radius-lg);padding:10px 18px;font-size:13px;align-items:center;gap:10px;justify-content:center;margin-left:auto;position:absolute;top:16px;right:16px;z-index:2;color:var(--brand-primary);box-shadow:var(--shadow-sm)}.note-reader-actions{display:flex;justify-content:flex-end}.toast-area{position:fixed;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:12px;pointer-events:none;z-index:1200;background:#04061900;transition:background var(--transition-slow)}.toast-area.active{background:#04061973;-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px)}.toast-area .toast{pointer-events:auto;max-width:min(420px,90vw);text-align:center}@media(max-width:1200px){.learning-system{grid-template-columns:1fr}.learning-system-notes{order:2}}.note-reader{display:flex;flex-direction:column;gap:var(--space-4)}.note-reader-card{border:1px solid rgba(17,24,39,.06);border-radius:var(--radius-lg);background:var(--surface);padding:28px;display:flex;flex-direction:column;gap:var(--space-4);box-shadow:var(--shadow-md)}.note-reader-meta{display:flex;flex-wrap:wrap;gap:12px;color:var(--text-muted)}.note-reader-progress{display:flex;flex-direction:column;gap:6px}.note-reader-progress progress{width:100%;height:8px;-webkit-appearance:none;-moz-appearance:none;appearance:none;border-radius:var(--radius-pill);overflow:hidden;background:#0f172a14}.note-reader-progress progress::-webkit-progress-bar{background:transparent}.note-reader-progress progress::-webkit-progress-value{background:var(--brand-primary)}.note-reader-progress progress::-moz-progress-bar{background:var(--brand-primary)}.note-reader-tools{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:8px}.selection-toggle{display:inline-flex;align-items:center;gap:8px;border-radius:var(--radius-pill);border-color:#1118271f;font-weight:600;background:#ffffffe6;transition:border-color var(--transition-base),background var(--transition-base),color var(--transition-base),box-shadow var(--transition-base)}.selection-toggle-dot{width:8px;height:8px;border-radius:50%;background:#1118272e;transition:background var(--transition-base)}.selection-toggle-hint{font-size:12px;line-height:1;padding:2px 8px;border-radius:var(--radius-full);background:#0f172a14;font-weight:500}.selection-toggle-helper{font-size:13px;color:var(--text-muted)}.selection-toggle.is-active,.selection-toggle.is-alt{border-color:#2a4cff66;background:#2a4cff1f;color:var(--brand-primary);box-shadow:0 8px 24px #2a4cff2e}.selection-toggle.is-active .selection-toggle-dot,.selection-toggle.is-alt .selection-toggle-dot{background:var(--brand-primary)}.reader-selection-stage{position:relative;margin-top:16px;border-top:1px solid var(--border);padding-top:16px}.reader-selection-stage.selection-has-box .note-reader-preview{box-shadow:inset 0 0 0 1px #3b82f62e}.reader-selection-stage.selection-mode-ready .note-reader-preview{box-shadow:inset 0 0 0 1px #3b82f640;cursor:crosshair}.reader-selection-stage.selection-dragging .note-reader-preview{-webkit-user-select:none;user-select:none;cursor:crosshair}.reader-selection-stage .selection-region{position:absolute;border:2px solid rgba(37,99,235,.9);background:#3b82f626;border-radius:var(--radius-md);box-shadow:0 16px 40px #0f172a40;pointer-events:none;z-index:3}.reader-selection-stage .selection-region[hidden]{display:none}.reader-selection-stage .selection-menu{position:absolute;background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:16px;width:min(420px,calc(100% - 16px));box-shadow:0 28px 60px #0f172a40;z-index:4}.reader-selection-stage .selection-menu[hidden]{display:none}.selection-menu-title{margin:0 0 10px;font-weight:600;color:var(--text)}.selection-menu-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}.selection-menu-group{display:flex;flex-direction:column;gap:6px}.selection-menu-label{margin:0;font-size:13px;color:var(--muted)}.selection-menu-action{border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);padding:8px 10px;text-align:left;font-size:14px;cursor:pointer;transition:border-color .2s ease,background .2s ease,transform .2s ease}.selection-menu-action:hover,.selection-menu-action:focus-visible{border-color:var(--orange);background:var(--orange-soft);transform:translateY(-1px);outline:none}.note-reader-preview{line-height:1.7;font-size:15px;position:relative;z-index:1;transition:box-shadow .2s ease}.note-reader-preview h1,.note-reader-preview h2,.note-reader-preview h3{margin:12px 0}.note-reader-preview ul{padding-left:20px;margin:12px 0}.math-block{margin:16px 0;text-align:center}.math-inline{display:inline-flex;align-items:center;margin:0 4px}.math-error{color:#dc2626;font-weight:600}.reader-preview-empty{text-align:center;color:var(--muted);font-style:italic}.note-reader-empty .empty-card{border:1px dashed var(--border);border-radius:var(--radius-lg);padding:32px;background:#fff;text-align:center}.note-workspace{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.note-workspace.single{grid-template-columns:1fr}.note-pane{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;display:flex;flex-direction:column;gap:16px}.note-title-input{border:none;background:transparent;font-size:28px;font-weight:700;width:100%;outline:none}.note-meta-line{display:flex;flex-wrap:wrap;gap:16px;font-size:14px;color:var(--muted)}.note-editor-area{min-height:360px;border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;font-size:15px;line-height:1.6;font-family:JetBrains Mono,SFMono-Regular,ui-monospace,monospace;resize:vertical;background:#f8fafc}.note-pane-preview .note-preview{border:1px solid var(--border);border-radius:var(--radius-md);padding:18px;min-height:360px;overflow-y:auto}.note-preview h1,.note-preview h2,.note-preview h3,.note-preview p{margin:0 0 12px}.note-preview ul{padding-left:20px;margin:0 0 12px}.note-preview table,.note-reader-preview table{width:100%;border-collapse:separate;border-spacing:0;margin:0 0 16px;font-size:14px;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface);box-shadow:var(--shadow-sm, 0 8px 20px rgba(15, 23, 42, .08))}.note-preview th,.note-preview td,.note-reader-preview th,.note-reader-preview td{padding:10px 14px;border-bottom:1px solid var(--border);text-align:left}.note-preview thead th,.note-reader-preview thead th{background:var(--orange-soft);font-weight:600;letter-spacing:.01em}.note-preview tbody tr:nth-child(odd) td,.note-reader-preview tbody tr:nth-child(odd) td{background:#f973160a}.note-preview tbody tr:hover td,.note-reader-preview tbody tr:hover td{background:#f973161a;transition:background .2s ease}.review-lab{display:flex;flex-direction:column;gap:var(--space-6)}.review-hero{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:var(--space-5);align-items:stretch}.review-hero-panel{border:1px solid rgba(17,24,39,.08);border-radius:var(--radius-lg);padding:var(--space-5);background:#ffffffd9;display:flex;flex-direction:column;gap:var(--space-4);box-shadow:var(--shadow-md)}.review-progress{display:flex;flex-direction:column;gap:12px}.review-progress-head{display:flex;justify-content:space-between;font-weight:600;color:var(--text-muted)}.review-progress-bar{height:10px;border-radius:var(--radius-pill);background:#0f172a14;overflow:hidden}.review-progress-bar div{height:100%;width:var(--quiz-progress, 0%);max-width:100%;background:linear-gradient(90deg,var(--brand-primary),var(--brand-secondary));transition:width var(--transition-base)}.review-body{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(280px,.5fr);gap:var(--space-5);align-items:flex-start}.quiz-stage{min-height:620px}.quiz-stage.is-transitioning .quiz-card{opacity:0;transform:translateY(16px)}.quiz-card{background:var(--surface);border-radius:var(--radius-lg);border:1px solid rgba(17,24,39,.08);box-shadow:var(--shadow-lg);padding:var(--space-5);display:flex;flex-direction:column;gap:var(--space-4);transition:opacity .2s ease,transform .2s ease}.quiz-card-head{display:flex;flex-direction:column;gap:var(--space-3)}.quiz-card-tags{display:flex;flex-wrap:wrap;gap:8px}.quiz-interaction{border:1px solid rgba(17,24,39,.08);border-radius:var(--radius-lg);padding:var(--space-4);background:#f8faffbf}.quiz-feedback{margin-top:var(--space-4);border:1px solid rgba(42,76,255,.2);border-radius:var(--radius-lg);padding:var(--space-4);background:#2a4cff14;color:var(--brand-primary);font-weight:600;line-height:1.6;opacity:0;transform:translateY(6px);transition:opacity var(--transition-base),transform var(--transition-base)}.quiz-feedback.is-visible{opacity:1;transform:translateY(0)}.quiz-feedback.feedback-enter{animation:quiz-feedback-float .48s ease}.quiz-feedback-body{margin-top:8px;color:var(--text-strong);font-weight:500}.quiz-feedback[hidden]{display:none}.quiz-card-footer{display:flex;justify-content:space-between;align-items:center;gap:var(--space-3)}.quiz-card-progress{font-size:.9rem;color:var(--text-muted)}.quiz-sidebar{display:flex;flex-direction:column;gap:var(--space-4)}.quiz-sidebar-card{border:1px solid rgba(17,24,39,.08);border-radius:var(--radius-lg);padding:var(--space-4);background:var(--surface);box-shadow:var(--shadow-sm);display:flex;flex-direction:column;gap:var(--space-3)}.question-timeline{display:grid;grid-template-columns:repeat(auto-fit,minmax(48px,1fr));gap:8px}.timeline-dot{border:1px solid rgba(17,24,39,.12);border-radius:var(--radius-full);background:#ffffffd9;height:48px;display:inline-flex;align-items:center;justify-content:center;font-weight:600;cursor:pointer;transition:transform var(--transition-fast),border-color var(--transition-base),box-shadow var(--transition-base)}.timeline-dot:hover{transform:translateY(-2px)}.timeline-dot.active{border-color:#2a4cff66;box-shadow:var(--glow-brand);color:var(--brand-primary)}.timeline-dot.correct{border-color:#2fb67d99}.timeline-dot.incorrect{border-color:#f43f5e80}.timeline-dot.revealed{border-color:#2a4cff59}.timeline-dot.partial{border-color:#f5b94599}.quiz-prompt{font-weight:600;margin-bottom:12px}.quiz-md{line-height:1.6;font-size:.95rem}.quiz-md p{margin:0 0 .5em}.quiz-md p:last-child,.quiz-md ul:last-child,.quiz-md ol:last-child{margin-bottom:0}.quiz-md ul,.quiz-md ol{margin:0 0 .5em 1.1em;padding:0}.quiz-options{display:flex;flex-direction:column;gap:12px}.quiz-option{border:1px solid rgba(17,24,39,.08);border-radius:var(--radius-lg);padding:16px;text-align:left;background:#fff;transition:transform .12s ease,border-color var(--transition-base),box-shadow var(--transition-base)}.quiz-option:active{transform:scale(.95)}.quiz-option.is-selected{border-color:#2a4cff59;box-shadow:var(--shadow-sm)}.quiz-option.is-correct{border-color:var(--accent-success);animation:review-glow-correct .6s ease forwards}.quiz-option.is-incorrect{border-color:#f43f5e80;animation:review-glow-wrong .6s ease forwards}.quiz-option-label{font-weight:600}.quiz-option-detail{margin-top:6px;color:var(--text-muted);font-size:.9em}.flashcard-shell{display:flex;flex-direction:column;gap:var(--space-4)}.flashcard{perspective:1200px;position:relative;min-height:260px;border-radius:var(--radius-lg);cursor:pointer;background:linear-gradient(145deg,#2a4cff14,#6e6bef0a)}.flashcard:before{content:"";position:absolute;top:-12px;right:-12px;bottom:-12px;left:-12px;border-radius:inherit;background:radial-gradient(circle at 20% 20%,rgba(42,76,255,.2),transparent 60%);z-index:-1}.flashcard .flashcard-face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;border:1px solid rgba(17,24,39,.08);border-radius:inherit;padding:var(--space-5);background:linear-gradient(180deg,#fff,#ffffffeb);box-shadow:var(--shadow-md),inset 0 1px #ffffffd9;transition:transform .6s cubic-bezier(.19,1,.22,1);display:flex;flex-direction:column;gap:var(--space-3)}.flashcard.is-flipped .flashcard-front{transform:rotateY(180deg)}.flashcard-back{transform:rotateY(180deg);background:#2a4cff14}.flashcard.is-flipped .flashcard-back{transform:rotateY(360deg)}.flashcard-meta{display:flex;justify-content:space-between;align-items:center;gap:var(--space-3);font-size:.85rem;color:var(--text-muted)}.flashcard-focus{font-weight:600;color:var(--text-strong)}.flashcard-content{flex:1 1 auto;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;overflow-y:auto;padding:var(--space-2);gap:var(--space-2)}.flashcard-content>*{width:100%}.flashcard-content .math-block{margin-left:auto;margin-right:auto}.flashcard-hint-bubble{border:1px solid rgba(42,76,255,.2);border-radius:var(--radius-lg);padding:var(--space-3);background:#2a4cff0f;color:var(--text-strong);opacity:0;transform:translateY(-8px);transition:opacity var(--transition-base),transform var(--transition-base);pointer-events:none;margin-top:var(--space-1)}.flashcard-hint-bubble .hint-label{font-size:.8rem;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-primary);font-weight:600}.flashcard-hint-bubble.is-visible{opacity:1;transform:translateY(0);pointer-events:auto}.flashcard-actions{display:flex;flex-wrap:wrap;gap:var(--space-3);padding-top:var(--space-1)}.flashcard-actions .pill-btn{min-width:150px;justify-content:center}.flashcard-actions .pill-btn.is-active{background:#2a4cff1f;border-color:#2a4cff73;color:var(--brand-primary);box-shadow:var(--glow-brand)}.matching-board{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:16px;border:1px dashed rgba(17,24,39,.12);border-radius:var(--radius-lg)}.matching-column{display:flex;flex-direction:column;gap:10px}.matching-chip{border:1px solid rgba(17,24,39,.12);border-radius:var(--radius-lg);background:#ffffffe6;padding:12px;text-align:left;cursor:pointer;transition:border-color var(--transition-base),transform var(--transition-fast)}.matching-chip.armed{border-color:#2a4cff99;transform:scale(.98)}.matching-lines{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none}.matching-line{stroke:#2a4cff80;stroke-width:3;stroke-linecap:round;stroke-dasharray:120;animation:matching-draw .4s ease forwards}.matching-line.solid{stroke-dasharray:0}.fill-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--space-3)}.fill-field{display:flex;flex-direction:column;gap:6px}.short-answer{width:100%;min-height:120px;border-radius:var(--radius-lg);border:1px solid rgba(17,24,39,.12);padding:var(--space-3);resize:vertical;font-size:.95rem}.feedback-bounce{animation:review-bounce .6s ease}@keyframes review-glow-correct{0%{box-shadow:0 0 #2fb67d00}to{box-shadow:0 0 30px #2fb67d59}}@keyframes review-glow-wrong{0%{box-shadow:0 0 #f43f5e00}to{box-shadow:0 0 30px #f43f5e59}}@keyframes quiz-feedback-float{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@keyframes matching-draw{0%{stroke-dashoffset:120}to{stroke-dashoffset:0}}@keyframes review-bounce{0%{transform:scale(.95)}55%{transform:scale(1.02)}to{transform:scale(1)}}.note-preview tr:last-child td,.note-reader-preview tr:last-child td{border-bottom:none}.note-preview code{background:#f1f5f9;padding:2px 6px;border-radius:var(--radius-sm);font-size:14px;display:inline-block}.note-preview-empty{color:var(--muted)}.settings{display:flex;flex-direction:column;gap:16px}.settings-card{border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);padding:24px;display:flex;flex-direction:column;gap:18px}.settings-row{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.toggle{position:relative;display:inline-flex;width:48px;height:26px}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:var(--border);transition:.2s;border-radius:999px}.toggle-slider:before{position:absolute;content:"";height:20px;width:20px;left:4px;bottom:3px;background-color:#fff;transition:.2s;border-radius:50%}.toggle input:checked+.toggle-slider{background-color:var(--orange)}.toggle input:checked+.toggle-slider:before{transform:translate(20px)}.note-empty{min-height:60vh;display:flex;align-items:center;justify-content:center}.note-empty-card{border:1px dashed var(--border);border-radius:var(--radius-lg);padding:40px;background:var(--surface);text-align:center;max-width:520px}.knowledge-base{display:flex;flex-direction:column;gap:20px}.kb-toolbar{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:20px;padding:24px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--surface);box-shadow:var(--shadow-lg)}.kb-toolbar-actions{display:flex;gap:12px;flex-wrap:wrap}.kb-library-switcher{min-width:280px;position:relative;display:flex;flex-direction:column;gap:6px}.kb-library-summary{display:flex;flex-direction:column;gap:2px;color:var(--muted);font-size:12px}.kb-library-button{border:1px solid var(--border);border-radius:var(--radius-md);padding:10px 36px 10px 12px;background:#fff;display:flex;flex-direction:column;gap:4px;text-align:left;cursor:pointer;position:relative;min-width:260px;transition:border-color .2s ease,box-shadow .2s ease}.kb-library-button:hover{border-color:var(--muted);box-shadow:var(--shadow-sm)}.kb-library-button-title{font-weight:600;color:var(--text)}.kb-library-button-desc{font-size:12px;color:var(--muted)}.kb-library-chevron{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:12px;color:var(--muted)}.kb-library-menu{display:none;position:absolute;top:calc(100% + 8px);left:0;min-width:260px;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);box-shadow:var(--shadow-lg);padding:8px;z-index:10;flex-direction:column;gap:6px}.kb-library-menu.open{display:flex}.kb-library-option{border:1px solid transparent;border-radius:var(--radius-md);padding:8px 10px;background:transparent;display:flex;flex-direction:column;gap:4px;text-align:left;cursor:pointer;transition:border-color .2s ease,background .2s ease}.kb-library-option strong{font-size:14px;color:var(--text)}.kb-library-option span{font-size:12px;color:var(--muted)}.kb-library-option:hover{border-color:var(--border);background:var(--surface-alt, #f8fafc)}.kb-library-option.active{border-color:var(--orange);background:var(--orange-soft)}.kb-library-empty{font-size:14px;color:var(--muted)}.kb-category-board{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}.kb-category{border:1px solid var(--border);border-top:4px solid var(--kb-accent, var(--border));border-radius:var(--radius-lg);background:var(--surface);padding:16px;display:flex;flex-direction:column;gap:12px;box-shadow:var(--shadow-md);height:360px}.kb-category-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.kb-category-info{display:flex;flex-direction:column;gap:4px}.kb-category-title{display:flex;align-items:center;gap:8px}.kb-category-head h4,.kb-category-head .kb-rename-form{margin:0}.kb-category-icon{font-size:20px;color:var(--kb-accent, var(--text))}.kb-category-actions{display:flex;align-items:center;gap:8px}.kb-icon-btn{border:1px solid var(--border);border-radius:var(--radius-sm);background:transparent;padding:6px 8px;cursor:pointer}.kb-icon-btn:disabled{opacity:.4;cursor:not-allowed}.kb-icon-btn.handle{cursor:grab}.kb-rename-form{display:flex;flex-direction:column;gap:8px}.kb-rename-form input{border:1px solid var(--border);border-radius:var(--radius-md);padding:8px 10px;font-size:15px}.kb-rename-actions{display:flex;gap:8px}.kb-items{display:flex;flex-direction:column;gap:6px;flex:1;overflow-y:auto;padding-right:4px;scrollbar-width:thin;scrollbar-color:transparent transparent}.kb-items:hover{scrollbar-color:rgba(172,172,172,.85) transparent}.kb-items::-webkit-scrollbar{width:8px}.kb-items::-webkit-scrollbar-track{background:transparent;border-radius:999px;transition:background .2s ease}.kb-items::-webkit-scrollbar-thumb{border-radius:999px;background:transparent;transition:background .2s ease}.kb-items:hover::-webkit-scrollbar-track{background:linear-gradient(180deg,rgba(249,115,22,.18),transparent)}.kb-items:hover::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#f97316f2,#f9731680)}.kb-item{border:1px solid var(--border);border-radius:var(--radius-sm);padding:8px 10px;display:flex;flex-direction:column;gap:2px;background:var(--surface);cursor:grab}.kb-item.is-dragging{opacity:.5}.kb-item.highlight{border-color:var(--orange);box-shadow:0 0 0 2px #f9731640;animation:kb-item-pulse .8s ease-out 2}.kb-item-row{display:flex;align-items:center;gap:8px}.kb-item-title{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.kb-item-meta{font-size:11px;color:var(--muted);white-space:nowrap}.kb-empty{border:1px dashed var(--border);border-radius:var(--radius-md);padding:16px;text-align:center;color:var(--muted)}.kb-category-dropzone{border:1px dashed var(--border);border-radius:var(--radius-lg);padding:24px;min-height:160px;display:flex;align-items:center;justify-content:center;color:var(--muted)}.knowledge-base .is-drop-target{border-color:var(--orange);box-shadow:var(--shadow-md)}.kb-category-input{position:fixed;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--surface);padding:12px;box-shadow:var(--shadow-lg);z-index:998;min-width:260px}.kb-category-form{display:flex;flex-direction:column;gap:8px}.kb-category-input-row{display:flex;gap:8px;align-items:center}.kb-category-input-row input[type=text]{border:1px solid var(--border);border-radius:var(--radius-sm);padding:6px 8px;width:70px;text-align:center;font-size:16px}.kb-category-input-row input[type=color]{width:48px;height:40px;border:none;border-radius:var(--radius-sm);background:transparent;cursor:pointer}.kb-category-form input[name=title]{border:1px solid var(--border);border-radius:var(--radius-md);padding:8px 10px;font-size:14px}@keyframes kb-item-pulse{0%{background-color:#f9731626}60%{background-color:#f9731659}to{background-color:transparent}}@media(max-width:1200px){.os-shell{grid-template-columns:220px 1fr}.note-workspace{grid-template-columns:1fr}}@media(max-width:768px){.os-shell{grid-template-columns:1fr}.side-nav{position:static;min-height:auto;flex-direction:row;flex-wrap:wrap;gap:12px}.side-links{flex-direction:row;flex-wrap:wrap;gap:12px}.side-divider{display:none}.side-tabs{flex:1 1 100%;max-height:none;overflow:visible}.side-resizer{display:none}.tab-strip{flex-direction:row;flex-wrap:wrap;gap:8px}.tab-chip{flex:1 1 calc(50% - 8px)}.main-stage{padding:16px}.note-workspace{grid-template-columns:1fr}.task-tree .node-body{flex-direction:column}.task-tree .node-actions{flex-direction:row;justify-content:flex-end;min-width:auto}}.btn{border:1px solid transparent;border-radius:12px;padding:10px 20px;font-weight:600;letter-spacing:.01em;line-height:1.1;cursor:pointer;background:#ffffffb3;color:var(--text-strong);box-shadow:inset 0 1px #ffffff80;transition:transform var(--transition-fast),box-shadow var(--transition-base),border-color var(--transition-base),background var(--transition-base),color var(--transition-fast)}.btn.primary{background:linear-gradient(135deg,#2a4cff,#6e6bef);color:#fff;border-color:transparent;box-shadow:var(--glow-brand)}.btn.secondary{background:#1a203aeb;color:#fff;border-color:transparent;box-shadow:0 18px 36px #12182e59}.btn.ghost{background:transparent;border-color:#1a203a26;color:var(--text-strong)}.btn.small{padding:8px 14px;font-size:14px}.btn.slim{padding:6px 14px;font-size:13px;border-radius:10px}.btn:not(:disabled):hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn:not(:disabled):active{transform:translateY(0);box-shadow:var(--shadow-sm)}.btn:focus-visible{outline:none;box-shadow:0 0 0 2px #2a4cff59,var(--shadow-sm)}.btn:disabled{opacity:.5;cursor:not-allowed;box-shadow:none}.eyebrow{text-transform:uppercase;letter-spacing:.18em;color:var(--text-muted);font-size:12px;font-weight:600}.sub,.label,.microcopy,.hint{color:var(--text-muted);font-size:14px;line-height:1.5}.label{font-weight:500}.strong{font-size:20px;font-weight:700;color:var(--text-strong)}.mascot-bubble{margin-top:10px;padding:10px 14px;border-radius:12px;background:#2a4cff1f;color:var(--brand-primary);font-weight:600;box-shadow:inset 0 1px #fff6}.mascot-face{font-size:28px}.progress-line{display:flex;flex-direction:column;gap:6px}.progress-bar{width:100%;height:8px;border-radius:var(--radius-pill);overflow:hidden;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#1118271f}.progress-bar::-webkit-progress-bar{background:transparent}.progress-bar::-webkit-progress-value{background:var(--brand-primary)}.progress-bar::-moz-progress-bar{background:var(--brand-primary)}.tag,.pill,.pill-btn{display:inline-flex;align-items:center;border-radius:var(--radius-pill);padding:4px 12px;font-size:13px;font-weight:600}.tag{background:#2a4cff1f;color:var(--brand-primary)}.pill{background:#1118270f;color:var(--text-strong)}.pill.易{background:#2ed5732e;color:#168f52}.pill.中{background:#f5b94538;color:#a45b00}.pill.难{background:#ff5e7333;color:#c23342}.pill.warning{background:#f5b9452e;color:#b07912}.pill.info{background:#4a7df02e;color:#3450a8}.pill.ghost{background:transparent;border:1px dashed rgba(17,24,39,.15);color:var(--text-muted)}.pill.timing{background:#11182714;color:var(--text-strong)}.pill-btn{border:1px solid rgba(17,24,39,.12);background:#ffffffd9;cursor:pointer}.pill-btn.active{background:#2a4cff26;border-color:#2a4cff73;color:var(--brand-primary)}.pill-btn:hover{border-color:#2a4cff66;color:var(--brand-primary)}.chip{border-radius:var(--radius-pill);border:1px solid rgba(17,24,39,.12);background:#ffffffe6;padding:6px 14px;font-weight:600;display:inline-flex;flex-direction:column;gap:2px;font-size:14px;cursor:pointer;color:var(--text-strong);box-shadow:var(--shadow-inner);transition:border-color var(--transition-base),background var(--transition-base),color var(--transition-fast)}.chip span{font-size:12px;font-weight:500;color:var(--text-muted)}.chip.active{border-color:#2a4cff66;background:#2a4cff14;color:var(--brand-primary)}.chip-group{display:flex;flex-wrap:wrap;gap:8px}.chip-column{display:flex;flex-direction:column;gap:10px}.tag button{border:none;background:transparent;cursor:pointer;margin-left:6px;color:inherit}.ring{width:10px;height:10px;border-radius:50%;border:2px solid rgba(17,24,39,.2)}.ring.complete{border-color:var(--accent-success);background:var(--accent-success)}.ring.available{border-color:var(--brand-primary);background:var(--brand-primary)}.countdown{font-weight:600;color:var(--brand-primary)}textarea,input,select{width:100%;border-radius:12px;border:1px solid rgba(17,24,39,.12);padding:10px 14px;font:inherit;background:#ffffffe6;transition:border-color var(--transition-fast),box-shadow var(--transition-base),background var(--transition-fast)}textarea:focus,input:focus,select:focus{outline:none;border-color:#2a4cffcc;box-shadow:0 0 0 3px #2a4cff26;background:#fff}textarea{min-height:140px;resize:vertical}input[type=range]{padding:0}.switch-row{display:flex;align-items:center;justify-content:space-between;gap:10px}.switch-row input{display:none}.switch{width:44px;height:24px;border-radius:var(--radius-pill);background:#11182726;position:relative;flex-shrink:0;transition:background var(--transition-fast)}.switch:after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:transform var(--transition-fast),box-shadow var(--transition-fast);box-shadow:var(--shadow-sm)}.switch-row input:checked+.switch{background:var(--brand-primary);box-shadow:var(--glow-brand)}.switch-row input:checked+.switch:after{transform:translate(20px)}.warning{min-height:22px;color:var(--accent-warning);font-weight:600}.loading{display:flex;flex-direction:column;align-items:center;gap:12px}.status-indicator{width:16px;height:16px;border-radius:50%;border:2px solid transparent}.status-indicator.loading{border-color:#11182726;border-top-color:var(--brand-primary);animation:spin 1s linear infinite}.status-indicator.success{background:var(--accent-success);box-shadow:0 0 0 4px #2fb67d40}.dots{display:inline-flex;gap:8px}.dots span{width:8px;height:8px;border-radius:50%;background:var(--brand-primary);animation:bounce 1s infinite ease-in-out}.dots span:nth-child(2){animation-delay:.15s}.dots span:nth-child(3){animation-delay:.3s}.badge{display:inline-flex;padding:6px 12px;border-radius:var(--radius-pill);background:#11182714;color:var(--text-strong);font-weight:600}.badge.accent{background:#2a4cff1f;color:var(--brand-primary)}.timer{font-size:24px;font-weight:700;padding:10px 16px;border-radius:14px;background:#11182714}.radar{padding:16px;border-radius:var(--radius-md);background:#f9fafb;border:1px dashed rgba(17,24,39,.12);font-family:JetBrains Mono,Fira Code,monospace;font-size:14px}.toast{padding:16px 20px;border-radius:16px;border:1px solid rgba(255,255,255,.3);background:#0e1022eb;color:#fff;box-shadow:0 25px 60px #06061259;opacity:0;transform:translateY(12px) scale(.98);transition:opacity var(--transition-base),transform var(--transition-base)}.toast.show{opacity:1;transform:translateY(0) scale(1)}.toast.success{background:#16805ae6;border-color:#54c9a599}.toast.info{background:#2a4cffe6;border-color:#adbbff99}.toast.warning{background:#f5b945eb;border-color:#ffe38ab3;color:#3f2c07}.cta-group,.actions{display:flex;gap:12px;flex-wrap:wrap}.cta-group{margin-top:12px}.route-item.locked{opacity:.6}.route-item.complete{border-color:var(--accent-success);background:#2fb67d14}.creation-summary{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}.goal-progress progress{border-radius:var(--radius-pill);overflow:hidden;background:#1118271f}.goal-progress progress::-webkit-progress-value{background:var(--brand-primary)}.goal-progress progress::-webkit-progress-bar{background:transparent}.goal-progress progress::-moz-progress-bar{background:var(--brand-primary)}.chat-history::-webkit-scrollbar{width:6px}.chat-history::-webkit-scrollbar-thumb{background:#1118271f;border-radius:var(--radius-pill)}.context-menu{position:fixed;min-width:160px;border:1px solid rgba(17,24,39,.12);border-radius:var(--radius-md);background:#fffffff2;box-shadow:var(--shadow-md);padding:8px 0;z-index:999;opacity:0;transform:scale(.98);transform-origin:top left;transition:opacity .12s ease,transform .12s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.context-menu.is-visible{opacity:1;transform:scale(1)}.context-menu-item{width:100%;border:none;background:transparent;text-align:left;padding:10px 16px;font-size:14px;cursor:pointer;color:var(--text-strong);transition:background var(--transition-fast),color var(--transition-fast)}.context-menu-item:hover:not(:disabled){background:#2a4cff1f;color:var(--brand-primary)}.context-menu-item.danger{color:var(--accent-warning)}.context-menu-item:disabled{opacity:.4;cursor:not-allowed}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes bounce{0%,80%,to{transform:scale(.8)}40%{transform:scale(1)}}[hidden]{display:none!important}.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}.faq ul{list-style:disc;margin-left:16px;color:var(--muted);font-size:14px}.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.scheduler{border-radius:var(--radius-md);border:1px dashed var(--border);padding:16px;background:#fff}.value{font-weight:600;color:var(--orange);margin-left:8px}.form-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:12px}.panel .actions,.question ol,.question ul{margin-top:8px}.result ol{margin-top:4px}.panel .radar{margin-top:12px}.panel .mascot{justify-content:center}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_AMS-Regular-DMm9YOAa.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_AMS-Regular-DRggAlZN.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/Learning-OS-demo/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/Learning-OS-demo/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Fraktur-Regular-CB_wures.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/Learning-OS-demo/assets/KaTeX_Main-Bold-Cx986IdX.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Main-Bold-Jm3AIy58.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Main-Bold-waoOVXN0.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/Learning-OS-demo/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Main-Italic-BMLOBm91.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Main-Italic-3WenGoN9.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Main-Regular-B22Nviop.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Main-Regular-Dr94JaBh.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Main-Regular-ypZvNtVU.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/Learning-OS-demo/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Math-Italic-t53AETM-.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Math-Italic-DA0__PXp.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Math-Italic-flOr_0UB.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/Learning-OS-demo/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Script-Regular-D3wIWfF6.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Script-Regular-D5yQViql.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Script-Regular-C5JkGWo-.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Size1-Regular-C195tn64.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Size2-Regular-oD1tc_U0.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Size3-Regular-CTq5MqoE.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Size4-Regular-BF-4gkZK.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Size4-Regular-DWFBv043.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/Learning-OS-demo/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2) format("woff2"),url(/Learning-OS-demo/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff) format("woff"),url(/Learning-OS-demo/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf) format("truetype")}.katex{font: 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.25"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:-moz-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}
