:root{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color-scheme:dark;--bg: #0f1217;--surface: #181c23;--surface-2: #232934;--surface-3: #12151b;--border: #2b313c;--border-strong: #3a4250;--border-subtle: #20252e;--text: #e7e9ee;--text-2: #aab2bf;--text-3: #79818f;--accent: #3b82f6;--accent-hover: #60a5fa;--accent-strong: #2563eb;--on-accent: #ffffff;--link: #60a5fa;--danger: #ef4444;--danger-text: #f87171;--danger-bg: #2a1618;--danger-border: #5a2a2d;--success: #22c55e;--success-text: #4ade80;--warning: #f59e0b;--info: #38bdf8;--info-text: #7dd3fc;--info-bg: #0d1f2d;--info-border: #1c3a4f;--teal: #2dd4bf;--purple: #a78bfa;--epic-border: #8b5cf6;--story-border: #2563eb;--overlay: rgba(0, 0, 0, .6);--shadow: rgba(0, 0, 0, .45);color:var(--text)}body{margin:0;background:var(--bg);color:var(--text)}button,input,select,textarea{font-family:inherit;font-size:inherit}button{cursor:pointer}.view-tabs{display:inline-flex;border:1px solid var(--border);border-radius:6px;overflow:hidden}.view-tabs button{border:none;background:var(--surface);padding:4px 12px;color:var(--text-2)}.view-tabs button+button{border-left:1px solid var(--border)}.view-tabs button.active{background:var(--surface-2);color:var(--text);font-weight:600;cursor:default}.kb-layout{flex:1;display:flex;min-height:0}.kb-sidebar{width:260px;flex-shrink:0;border-right:1px solid var(--border);background:var(--surface);padding:12px;overflow-y:auto;display:flex;flex-direction:column;gap:8px}.kb-resizer{flex:0 0 5px;cursor:col-resize;background:transparent}.kb-resizer:hover{background:var(--border-strong)}.kb-chat-drawer{width:380px;flex-shrink:0;border-left:1px solid var(--border);background:var(--surface-3);display:flex;flex-direction:column;min-height:0}.kb-chat-drawer-header{display:flex;align-items:center;gap:6px;padding:8px 12px;border-bottom:1px solid var(--border);background:var(--surface);font-size:15px}.kb-search{position:relative}.kb-search-input{width:100%;box-sizing:border-box;padding:6px 28px 6px 10px;border:1px solid var(--border);border-radius:6px;font-size:13px;color:var(--text);background:var(--surface)}.kb-search-input::placeholder{color:var(--text-3)}.kb-search-clear{position:absolute;right:4px;top:50%;transform:translateY(-50%);border:none;background:none;color:var(--text-3);padding:2px 6px;font-size:12px;line-height:1;border-radius:4px}.kb-search-clear:hover{color:var(--text);background:var(--surface-2)}.kb-doc-list button.kb-search-result{white-space:normal;display:flex;flex-direction:column;gap:2px}.kb-search-result-title{display:grid;grid-template-columns:auto 1fr;gap:6px;align-items:start}.kb-search-result-snippet{font-size:12px;color:var(--text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.kb-search-all{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--text-2);-webkit-user-select:none;user-select:none}.kb-search-all input{margin:0}.kb-search-result-project,.kb-doc-project{margin-left:6px;padding:1px 5px;font-size:11px;color:var(--text-2);background:var(--surface-2);border:1px solid var(--border);border-radius:4px;white-space:nowrap}.kb-doc-toolbar .kb-doc-project{margin-left:0;align-self:center}.kb-doc-key{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;color:var(--text-2);white-space:nowrap}.kb-doc-title-cell{white-space:normal;overflow-wrap:anywhere;line-height:1.35}.kb-doc-toolbar .kb-doc-key{margin-right:auto;align-self:center;font-size:13px;font-weight:600}.kb-new-doc{padding:6px 10px;border:1px dashed var(--border-strong);border-radius:6px;background:none;color:var(--text);text-align:left}.kb-new-doc:hover{background:var(--surface-2)}.kb-sidebar-empty{color:var(--text-3);font-size:13px;padding:8px 4px}.kb-doc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px}.kb-doc-list button{display:grid;grid-template-columns:auto 1fr;gap:6px;align-items:start;width:100%;text-align:left;border:none;background:none;padding:6px 8px;border-radius:6px;color:var(--text)}.kb-doc-list button:hover{background:var(--surface-2)}.kb-doc-list button.active{background:var(--surface-2);font-weight:600}.kb-pinned-section{margin-bottom:8px;padding-bottom:8px;border-bottom:1px solid var(--border-subtle)}.kb-section-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--text-3);padding:4px 8px}.kb-doc-pin{margin-right:4px;font-size:11px}.kb-main{flex:1;overflow-y:auto;padding:24px}.kb-empty{color:var(--text-3);padding:48px 24px;text-align:center}.kb-doc{max-width:1280px;margin:0 auto;background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:24px 32px}.kb-doc-toolbar{display:flex;justify-content:flex-end;gap:8px;margin-bottom:8px}.kb-doc-title{margin:0 0 16px;font-size:26px;font-weight:700;line-height:1.25;color:var(--text)}.kb-editor{max-width:1280px;margin:0 auto;display:flex;flex-direction:column;gap:12px;height:100%}.kb-title-input{padding:8px 10px;border:1px solid var(--border);border-radius:6px;font-size:18px;font-weight:600;background:var(--surface);color:var(--text)}.kb-content-input{flex:1;min-height:320px;padding:10px 12px;border:1px solid var(--border);border-radius:6px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.6;background:var(--surface);color:var(--text)}.kb-editor-actions{display:flex;gap:8px}.kb-markdown{line-height:1.65}.kb-markdown>:first-child{margin-top:0}.kb-markdown h1,.kb-markdown h2,.kb-markdown h3,.kb-markdown h4{margin:1.4em 0 .5em;line-height:1.25}.kb-markdown h1{font-size:26px;border-bottom:1px solid var(--border);padding-bottom:6px}.kb-markdown h2{font-size:21px}.kb-markdown h3{font-size:17px}.kb-markdown p,.kb-markdown ul,.kb-markdown ol{margin:.6em 0}.kb-markdown li{margin:.25em 0}.kb-markdown a{color:var(--link)}.kb-markdown blockquote{margin:.8em 0;padding:2px 14px;border-left:3px solid var(--border);color:var(--text-2)}.kb-markdown code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;background:var(--surface-2);border-radius:4px;padding:1px 5px}.kb-markdown pre{background:var(--surface-3);color:var(--text);border-radius:8px;padding:14px 16px;overflow-x:auto}.kb-markdown pre code{background:none;color:inherit;padding:0;font-size:13px}.kb-markdown table{border-collapse:collapse;margin:.8em 0}.kb-markdown th,.kb-markdown td{border:1px solid var(--border);padding:6px 12px;text-align:left}.kb-markdown th{background:var(--surface-2)}.kb-markdown hr{border:none;border-top:1px solid var(--border);margin:1.5em 0}.kb-markdown img{max-width:100%}.kb-mermaid{margin:.8em 0;text-align:center}.kb-mermaid svg{max-width:100%;height:auto}.kb-mermaid-loading{color:var(--text-3);font-size:13px}.kb-mermaid-error{margin:.8em 0}.kb-mermaid-error-note{color:var(--danger-text);font-size:13px;margin-top:4px}.help-tip{position:relative;display:inline-flex;flex-shrink:0}.help-tip-button{width:18px;height:18px;padding:0;border:1px solid var(--border);border-radius:50%;background:var(--surface);color:var(--text-3);font-size:11px;line-height:1;cursor:pointer}.help-tip-button:hover{color:var(--text);border-color:var(--border-strong);background:var(--surface-2)}.help-tip-panel{position:absolute;top:calc(100% + 6px);right:0;z-index:1000;width:280px;box-sizing:border-box;padding:10px 12px;background:var(--surface);border:1px solid var(--border);border-radius:6px;box-shadow:0 2px 8px var(--shadow);font-size:13px;line-height:1.45;color:var(--text);text-align:left}.help-tip-panel p{margin:0 0 8px}.help-tip-panel p:last-child{margin-bottom:0}.header-menu{position:relative;display:inline-flex;flex-shrink:0}.header-menu-button{border:1px solid var(--border);background:var(--surface);border-radius:6px;padding:4px 10px;font-size:16px;line-height:1;color:var(--text-2);cursor:pointer}.header-menu-button:hover{color:var(--text);border-color:var(--border-strong);background:var(--surface-2)}.header-menu-panel{position:absolute;top:calc(100% + 6px);right:0;z-index:1000;min-width:230px;box-sizing:border-box;padding:6px;background:var(--surface);border:1px solid var(--border);border-radius:8px;box-shadow:0 4px 16px var(--shadow);display:flex;flex-direction:column;gap:2px;text-align:left}.header-menu-item{display:flex;align-items:center;gap:8px;width:100%;box-sizing:border-box;padding:7px 10px;border:none;background:none;border-radius:6px;color:var(--text);font-size:14px;text-align:left;cursor:pointer}button.header-menu-item:hover{background:var(--surface-2)}.header-menu-divider{height:1px;background:var(--border);margin:4px 2px}.header-menu-section{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-3);padding:6px 10px 2px}.header-menu-field{padding:2px 10px 8px}.header-menu-field select{width:100%;box-sizing:border-box}.kb-search .help-tip{position:static}.kb-search .help-tip-panel{left:0;right:0;width:auto}.kb-search{display:flex;align-items:center;gap:6px}.kb-search-field{position:relative;flex:1;min-width:0}