响应式导航栏

Create a responsive navbar for a SaaS product. Layout: logo on the left, navigation links in the center (Features, Pricing, Docs, Blog), and a "Get Started" CTA button on the right. On mobile, show a hamburger menu that opens a slide-in drawer with the links. Use shadcn/ui Button and Sheet components and Tailwind CSS. Make the navbar sticky with a subtle shadow on scroll.

为 SaaS 产品创建一个响应式导航栏。布局：左侧 logo，中间导航链接（Features、Pricing、Docs、Blog），右侧 "Get Started" CTA 按钮。移动端显示汉堡菜单，点击后滑出抽屉显示链接。使用 shadcn/ui Button 和 Sheet 组件以及 Tailwind CSS。使导航栏固定，滚动时显示微妙阴影。