:root{--color-primary: #1a1a1a;--color-accent: #2563eb;--color-accent-light: #eff6ff;--color-bg: #f5f5f5;--color-surface: #ffffff;--color-border: #e5e5e5;--color-text: #1a1a1a;--color-text-secondary: #666666;--color-text-muted: #999999;--color-danger: #dc2626;--color-success: #16a34a;--color-warning: #d97706;--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 12px rgba(0,0,0,.06);--shadow-lg: 0 8px 24px rgba(0,0,0,.08);--radius: 8px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,sans-serif;background:var(--color-bg);color:var(--color-text);font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased}.layout{display:flex;min-height:100vh}.sidebar{width:224px;background:var(--color-surface);border-right:1px solid var(--color-border);display:flex;flex-direction:column;flex-shrink:0;position:sticky;top:0;height:100vh;overflow-y:auto}.sidebar-logo{padding:20px 20px 16px;border-bottom:1px solid 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