What are the key differences between mountain bike shoes and road bike shoes, and how do these differences impact performance and comfort for cyclists?

Mountain bike shoes are designed with more traction and durability for off-road terrain, while road bike shoes are lighter and stiffer for efficient power transfer on smooth surfaces. These differences impact performance by providing better grip and protection for mountain bikers, and increased power transfer and efficiency for road cyclists. Comfort is also affected, with mountain bike shoes offering more cushioning and support for rough terrain, while road bike shoes prioritize a snug fit and stiffness for long rides on pavement.