The group and peer variants enable state-driven styling of child/sibling elements based on parent/sibling interactions, solving complex hover/focus patterns without JavaScript. group-hover: styles children when parent .group is hovered; peer-focus: styles siblings when .peer element is focused perfect for interactive cards, checkboxes, and dropdowns.
Complete Examples:
1. Group Hover (Interactive Cards):
2. Peer Focus (Custom Checkbox):
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