Build a LinkedIn Content Strategy for 30 Days

Act as a LinkedIn content strategist. I want to build a consistent posting presence on LinkedIn for the next 30 days. My professional focus is [EXPERTISE_AREA], my audience is [TARGET_AUDIENCE], and my goal is [CONTENT_GOAL]. Design a 30-day content calendar with: a posting frequency recommendation, 4 content pillars I should rotate between, 30 post topic ideas (one per day), the best days and times to post for my audience, and 3 content formats I should use (e.g. text, carousel, poll, video).