Build RIFTMARK CITADEL on FLAT terr...

Build RIFTMARK CITADEL on FLAT terrain, exactly 119x96. Make it a huge Western European medieval fortress, not on a hill or mountain. Use clean planned layout and massive scale. Style: dark stone, deepslate trim, dark oak, steep dark red/brown GABLED roofs, Gothic/late-medieval architecture. NO Asian/pagoda roofs, no temple shapes, no cone roofs, no bright colors. Add a giant central keep 27x23 and 60-70 blocks tall, 4 huge corner towers, 6-8 secondary towers, a 21-block-wide gatehouse with 7-block arch, 2 courtyards, battlements, buttresses, chimneys, balconies, narrow windows, arches, bridges and lanterns. On the front of the main keep, add a huge vertical black banner with a red border, a white crown at the top, and a large white capital letter R below it. Add smaller matching RiftMark