Build RIFTMARK CITADEL on flat terr...

Build RIFTMARK CITADEL on flat terrain as a realistic medieval walled castle complex. Keep a strong CENTRAL CASTLE as the main centerpiece, about 21x17 blocks and 30-36 blocks tall, with 4 corner towers, steep dark red/brown gabled roofs, balconies, arches, narrow windows, chimneys, battlements, and a large black banner with red border, white crown, and big white R on the front. Surround it with large outer stone walls and 4 corner wall towers. Leave open space between the center castle and outer walls for a small medieval market, paths, well, stalls, trees, and courtyard. Use mostly stone bricks, deepslate trim, dark oak beams, stairs, slabs, and lanterns. Make everything clean, realistic, detailed up close, and not overly textured.