Astro static nature education landing, Notion-like editorial layout, drag/drop lesson cards, mock content only

Astro static nature education landing, Notion-like editorial layout, drag/drop lesson cards, mock content only: a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). Astro static nature education landing, Notion-like editorial layout, drag/drop lesson cards, mock content only