:root{--color-bg: #f6f8fb;--color-surface: #ffffff;--color-surface-muted: #f8fafc;--color-surface-hover: #f1f5f9;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-primary-soft: #eff6ff;--color-primary-soft-border: #bfdbfe;--color-text: #0f172a;--color-text-muted: #64748b;--color-text-inverse: #ffffff;--color-success: #16a34a;--color-success-soft: #f0fdf4;--color-warning: #d97706;--color-warning-soft: #fffbeb;--color-danger: #dc2626;--color-danger-soft: #fef2f2;--color-info: #0284c7;--color-info-soft: #f0f9ff;--color-accent: #2563eb;--color-accent-soft: #eff6ff;--color-border: #e2e8f0;--color-border-strong: #cbd5e1;--shadow-sm: 0 1px 2px rgba(15, 23, 42, .05);--shadow-md: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 12px rgba(15, 23, 42, .05);--shadow-lg: 0 4px 6px rgba(15, 23, 42, .04), 0 12px 24px rgba(15, 23, 42, .08);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--weight-normal: 400;--weight-medium: 500;--weight-semibold: 600;--weight-bold: 700;--text-xs: 12px;--text-sm: 13px;--text-base: 14px;--text-lg: 16px;--text-xl: 18px;--text-2xl: 24px;--text-3xl: 30px;--transition-fast: .15s ease;--focus-ring: 0 0 0 3px rgba(37, 99, 235, .35)}html,body,#root{height:100%;margin:0}body{font-family:var(--font-sans);font-size:var(--text-base);line-height:1.5;color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--radius-sm)}h1,h2,h3{margin:0;font-weight:650;letter-spacing:-.01em}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.92em;background:var(--color-surface-muted);border:1px solid var(--color-border);border-radius:4px;padding:1px 5px}*{box-sizing:border-box}html,body,#root{margin:0;padding:0;height:100%}body{font-family:var(--font-sans);font-size:var(--text-base);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased}h1,h2,h3{margin:0;font-weight:var(--weight-semibold);letter-spacing:-.01em}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}code{font-family:var(--font-mono);font-size:.9em;background:var(--color-primary-soft);padding:.1em .35em;border-radius:var(--radius-sm)}.bf-btn-primary:hover:not(:disabled){background:var(--color-primary-hover)}.bf-btn-secondary:hover:not(:disabled){background:var(--color-surface-hover)}.bf-btn-danger:hover:not(:disabled){background:#b91c1c}.bf-btn-ghost:hover:not(:disabled){background:var(--color-primary-soft)}