.app-shell{--space-xs:0.5rem;--space-sm:0.75rem;--space-md:1rem;--space-lg:1.5rem;--space-xl:2rem;--space-2xl:3rem;--radius-sm:0.5rem;--radius-md:0.75rem;--radius-lg:1rem;--color-bg-primary:#ffffff;--color-bg-secondary:#fafafa;--color-bg-tertiary:#f5f5f5;--color-bg-hover:#f9f9f9;--color-border-subtle:#e5e5e5;--color-border-medium:#d4d4d4;--color-text-primary:#171717;--color-text-secondary:#737373;--color-text-tertiary:#a3a3a3;--color-primary:#171717;--color-primary-hover:#404040;--color-danger:#ef4444;--color-danger-hover:#dc2626;font-family:Inter,-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,sans-serif;font-size:14px;line-height:1.5;color:var(--color-text-primary);background:var(--color-bg-secondary);min-height:100vh}.app-shell h1{font-size:1.75rem;font-weight:600;line-height:1.2;letter-spacing:-.02em}.app-shell h2{font-size:1.25rem;font-weight:600;line-height:1.3;letter-spacing:-.01em}.app-shell h3{font-size:1rem;font-weight:600;line-height:1.4}.app-shell p{font-size:.875rem;line-height:1.5;color:var(--color-text-secondary)}.app-shell button,.app-shell input,.app-shell select,.app-shell textarea{font-family:inherit;font-size:.875rem}.app-shell *{box-sizing:border-box}