Full-page background outside of set margins?

[compass360]

Description

I've got my PDF outputting beautifully with running headers/footers, nice page breaks, and it all looks great. I'd like to have a cover page (the first page of the PDF) use a full-page graphic (ideally an SVG) as its background, but I can see that the margins I've implemented (via cliOptions) prevent me from styling the content outside of these margins, which clip any overflow, leaving me limited to design within the predetermined margins.

Is there any way around this, or some approach that I haven't considered that would still allow me to apply margins on some pages and not others?

Additional info

• Craft version: 3.7.4.6
• PHP version: 7.4.21
• Database driver & version: MySQL 5.7.34
• Plugin version: 1.2.9