Generate landing page content from PRD — hero section, features, A/B headline variants, CTA, and SEO meta tags. Use when user says "create landing page", "write landing copy", "hero section", "A/B headlines", or "landing content". Can scaffold actual pages for astro-static. Do NOT use for SEO auditing (use /seo-audit).

根据产品需求文档生成落地页内容，包括主标题区、功能亮点、A/B测试标题变体、号召性用语和SEO元标签。当用户提到“创建落地页”“撰写落地页文案”“主标题区”“A/B标题”或“落地页内容”时使用。可为astro-static生成实际页面。请勿用于SEO审计（请使用/seo-audit）。