:root{--primary: #3b82f6;--primary-hover: #2563eb;--bg-body: #f3f4f6;--bg-card: #ffffff;--text-main: #1f2937;--text-primary: var(--text-main);--text-muted: #6b7280;--border: #e5e7eb;--danger: #ef4444;--success: #10b981;--warning: #f59e0b;--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--radius: 8px}:root[data-theme=dark]{--bg-body: #111827;--bg-card: #1f2937;--text-main: #f9fafb;--text-muted: #9ca3af;--border: #374151}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-body);color:var(--text-main);line-height:1.5;font-size:14px}button{cursor:pointer;border:none;font-family:inherit;transition:all .2s}input,select{font-family:inherit;border:1px solid var(--border);padding:6px 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