What are the fees for WhiteBIT spot trading?

Could you please elaborate on the fee structure for spot trading on WhiteBIT? Are there any base fees or percentage-based fees? Are there any additional charges for high-volume traders? Are there any discounts or promotions available for frequent traders? How does the fee structure compare to other popular cryptocurrency exchanges? Is there a detailed breakdown of fees available on the WhiteBIT website or do I need to contact customer support for more information?