结账表单

Create a checkout page with a two-column layout. Left column: shipping information form (name, email, address, city, country, postal code) and payment form (card number, expiry, CVC). Right column: order summary card showing items, subtotal, shipping, tax, and total with a "Place order" button. Use shadcn/ui Card, Input, Button, and Separator components and Tailwind CSS. Include form validation and responsive stacking.

创建一个两列布局的结账页面。左列：配送信息表单（姓名、邮箱、地址、城市、国家、邮编）和支付表单（卡号、有效期、CVC）。右列：订单摘要卡片，显示商品、小计、运费、税费和总计，以及 "Place order" 按钮。使用 shadcn/ui Card、Input、Button 和 Separator 组件以及 Tailwind CSS。包含表单验证和响应式堆叠。