:root{--rb-primary-color: #2563eb;--rb-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--rb-border-radius: 4px;--rb-surface-color: #ffffff;--rb-text-color: #1f2937;--rb-border-color: #e5e7eb;--rb-hover-color: #f3f4f6;--rb-muted-color: #6b7280;--rb-error-color: #dc2626;--rb-success-color: #16a34a}.container{font-family:var(--rb-font-family);color:var(--rb-text-color);background:var(--rb-surface-color);border-radius:var(--rb-border-radius);box-sizing:border-box}.container *,.container *:before,.container *:after{box-sizing:inherit}