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var(--space-2);color:var(--color-text-muted)}.kb-body{display:flex;gap:var(--space-6);flex:1;min-height:0}.kb-sidebar{width:280px;flex-shrink:0;display:flex;flex-direction:column;gap:var(--space-4)}.kb-tree{overflow-y:auto}.kb-tree-level{list-style:none;margin:0;padding:0}.kb-tree-row{display:flex;align-items:center;gap:var(--space-2);width:100%;background:none;border:none;font:inherit;font-size:var(--font-size-base);color:var(--color-text-secondary);padding:var(--space-2);border-radius:var(--radius-md);cursor:pointer;text-align:left}.kb-tree-row:hover{color:var(--color-text-primary)}.kb-tree-row.active{background:var(--color-surface-2);color:var(--color-text-primary);font-weight:500}.kb-tree-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.kb-tags-empty{font-size:var(--font-size-sm);color:var(--color-text-muted);line-height:var(--line-height-body)}.kb-content{flex:1;min-width:0;overflow-y:auto}.kb-section-title{font-size:var(--font-size-xl);font-weight:700;margin:0 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var(--duration-fast) var(--ease-default),border-color var(--duration-fast) var(--ease-default),color var(--duration-fast) var(--ease-default);white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-sm{font-size:var(--font-size-sm);padding:var(--space-1) var(--space-3)}.btn-md{font-size:var(--font-size-base);padding:var(--space-2) var(--space-4)}.btn-primary{background:var(--color-primary);color:#fff}.btn-primary:not(:disabled):hover{filter:brightness(1.08)}.btn-secondary{background:var(--color-surface-2);color:var(--color-text-primary);border-color:var(--color-border)}.btn-secondary:not(:disabled):hover{border-color:var(--color-text-muted)}.btn-ghost{background:transparent;color:var(--color-text-secondary)}.btn-ghost:not(:disabled):hover{background:var(--color-surface-2);color:var(--color-text-primary)}.btn-danger{background:transparent;color:var(--color-danger);border-color:var(--color-border)}.btn-danger:not(:disabled):hover{background:var(--color-danger);color:#fff}.login-shell{width:100%;height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg)}.login-card{width:340px;padding:var(--space-8) var(--space-6);display:flex;flex-direction:column;align-items:stretch;gap:var(--space-3)}.login-brand{display:flex;align-items:center;justify-content:center;gap:var(--space-3);font-size:var(--font-size-lg);font-weight:600;margin-bottom:var(--space-2)}.login-brand .mark{width:34px;height:34px;border-radius:var(--radius-md);background:var(--color-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}.login-subtitle{text-align:center;color:var(--color-text-secondary);font-size:var(--font-size-sm);margin:0 0 var(--space-4)}.login-sso-btn{width:100%;justify-content:center;gap:var(--space-2)}.login-divider{height:1px;background:var(--color-border);margin:var(--space-2) 0}.login-hint{text-align:center;color:var(--color-text-muted);font-size:var(--font-size-xs);margin:0}.login-error{text-align:center;color:var(--color-danger);font-size:var(--font-size-sm);margin:0}:root{--color-bg: #0a0a0b;--color-surface-2: #242427;--color-surface-3: #2e2e32;--color-border: #28282b;--color-text-primary: #f5f5f6;--color-text-secondary: #a0a0a6;--color-text-muted: #6b6b70;--color-primary: #6366f1;--color-accent: #8b5cf6;--color-danger: #ef4444;--color-warning: #f59e0b;--color-success: #22c55e;--font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .8125rem;--font-size-base: .875rem;--font-size-md: .9375rem;--font-size-lg: 1.125rem;--font-size-xl: 1.375rem;--font-size-2xl: 1.75rem;--line-height-body: 1.4;--line-height-heading: 1.2;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 32px;--radius-pill: 999px;--shadow-1: 0 1px 2px rgba(0, 0, 0, .24);--shadow-2: 0 4px 12px rgba(0, 0, 0, .32);--shadow-3: 0 16px 40px rgba(0, 0, 0, .4);--ease-default: cubic-bezier(.4, 0, .2, 1);--duration-fast: .12s;--duration-base: 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#e4e4e7;--color-text-primary: #18181b;--color-text-secondary: #52525a;--color-text-muted: #8b8b92;--color-danger: #dc2626;--color-warning: #d97706;--color-success: #16a34a;--shadow-1: 0 1px 2px rgba(0, 0, 0, .06);--shadow-2: 0 4px 12px rgba(0, 0, 0, .08);--shadow-3: 0 16px 40px rgba(0, 0, 0, .12)}*,*:before,*:after{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--color-bg);color:var(--color-text-primary);font-family:var(--font-family);font-size:var(--font-size-base);line-height:var(--line-height-body)}a,button{color:inherit}@media (prefers-reduced-motion: reduce){*,*:before,*:after{transition:none!important;animation:none!important}}