Created from prompt

Design a high-functionality monthly calendar with a split-header layout. White (#FFFFFF) background with charcoal (#333333) text. Each month uses a thin 4px top-border in a distinct jewel tone (JAN: Sapphire #005F73, FEB: Ruby #9B2226, MAR: Emerald #065A38). Typography: Playfair Display Black for the month name, Inter for the grid numbers. Layout: Top 20% of the page is split horizontally; the left side features the giant month name, while the right side contains a 'Top 3 Priorities' checklist with circles for ticking. Below is a generous 7-column grid. Grid cells are separated by thin 1px #E5E5E5 lines. Day numbers are centered at the top of each cell. The bottom of the page includes a full-width 'Notes & Reflections' horizontal section with light dotted lines. Focus on whitespace and functional writing areas, similar to TheDailyPage’s minimalist aesthetic.