Components

Structural containers compose content into scan-friendly layouts:

• grid(cols, gap?): Rows/columns layout; validator enforces cols 1..6 and gap 0..64.
• section(title): Logical grouping with heading-like intent.
• card(title): A bordered content box; contains arbitrary blocks.

Components are recognized at parse time as Component { name, attrs, children, self_closing }. Children may contain full Markdown blocks/inlines. Raw HTML blocks/inline are dropped by the parser; use components instead.