Create a content calendar for the next {{time_frame}} using a {{tone}} tone. Include 4 blog posts, {{short_video_count}} 60-second videos, {{long_video_count}} 5-7 minute videos, and 4 email newsletters. For each item, provide publish date, topic, key message, and audience segment. Output as a markdown table. Maximum 600 words. Ensure unique dates, relevant topics, and chronological order. If uncertain, skip that section.