docs: split Structure into six linked department pages

docs/organization/structure/marketing.mdx

@@ -0,0 +1,23 @@
+---
+title: Marketing
+pagination_prev: structure/operations
+pagination_next: structure/finance-accounting
+description: Marketing purpose, teams and responsibilities in Eldorado’s operating model.
+---
+
+**Purpose:** attract and retain customers, build the Eldorado brand and grow marketplace demand.
+
+**Marketing Squad** delivers the department’s responsibilities across the following workstreams.
+
+| Workstream | Responsibilities |
+| --- | --- |
+| Brand & Community | Brand positioning, campaigns, organic social, community and brand partnerships. |
+| Creative | Campaign concepts, visual assets and performance creative. |
+| SEO | Organic discovery, search visibility and content performance. |
+| PPC & Affiliate | Paid acquisition, affiliate channels and return on marketing investment. |
+| Influencer | Creator relationships, influencer programs and campaign delivery. |
+| CRM | Customer lifecycle communication, retention, reactivation and campaign personalization. |
+
+The CMO coordinates Marketing. The Brand Team Lead owns Brand & Community, with shared support from Creative and the other marketing workstreams.
+
+[Return to Structure overview](../structure.mdx)