Pricing Plans

• `PricingPlans`: lays out the options and an optional summary (an OrderSummary with the chosen plan and a "Continue" action: a sticky card on large screens, a bar fixed to the bottom on smaller ones).
• `PricingPeriod`: the billing period as a segmented toggle that always has one selected (value/onChange; PricingPeriodOption with an id, and a Badge inside for the saving).
• `PricingPlanGroup`: a radio group of PricingPlan cards, stacked in one list on small screens and side by side in equal columns once its own width fits them.
• `PricingPlan`: name, badge ("Most popular"), description, price and period formatted by the app, priceNote (the equivalent, "R$ 718,80 per year") and isFeatured for a brand glow and a brand badge (the border is left to the selected plan). The radio is named by the plan and described by its price.
• `PricingPlanFeature`: what the plan has; isIncluded={false} shows a dash, muted text and "Not included" read before it.

Built-in text is in English; translate it with i18n.labels.