*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--clr-bg: #f4f5f7;--clr-surface: #ffffff;--clr-border: #e2e5ea;--clr-border-strong: #c9cdd5;--clr-primary: #1a56db;--clr-primary-hover: #1447c0;--clr-primary-light: #e8f0fe;--clr-text: #111827;--clr-text-secondary: #6b7280;--clr-text-muted: #9ca3af;--clr-success: #059669;--clr-success-bg: #d1fae5;--clr-warning: #d97706;--clr-warning-bg: #fef3c7;--clr-danger: #dc2626;--clr-danger-bg: #fee2e2;--clr-info: #0284c7;--clr-info-bg: #e0f2fe;--sidebar-w: 240px;--radius: 8px;--shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04)}html{font-size:14px}body{font-family:Inter,system-ui,sans-serif;background:var(--clr-bg);color:var(--clr-text);line-height:1.5}.app-shell{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);background:var(--clr-surface);border-right:1px solid 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