*{box-sizing:border-box}:root{--bg: #f7f8fa;--surface: #ffffff;--border: #e5e7eb;--border-strong: #d1d5db;--text: #111827;--text-muted: #6b7280;--text-faint: #9ca3af;--accent: #4f46e5;--accent-hover: #4338ca;--accent-soft: #eef2ff;--danger: #dc2626;--danger-soft: #fef2f2;--success: #16a34a;--success-soft: #f0fdf4;--warning: #d97706;--warning-soft: #fffbeb;--radius: 10px;--radius-sm: 7px;--shadow: 0 1px 2px rgba(0, 0, 0, .04), 0 1px 6px -2px rgba(0, 0, 0, .06);--sidebar-w: 232px}html,body{margin:0;height:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:14px;-webkit-font-smoothing:antialiased}#root{height:100%}button{font-family:inherit}h1,h2,h3{margin:0}.app-shell{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-w);flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;padding:18px 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