General Reset
*{margin:0;padding:0;box-sizing:border-box}body{font-family:Arial,sans-serif;background-color:#f9f9f9;padding:20px}.productWrapper{display:flex;padding:20px 0;justify-content:center;flex-wrap:wrap;box-sizing:border-box}.productItem{width:30%;margin:1vh 1vw;box-shadow:0 4px 8px rgba(0,0,0,.1);border-radius:15px;background-color:#fff;flex-direction:row;justify-content:space-between;padding:20px;scroll-snap-align:start;gap:1vw}.productItem,.slidesDetail{display:flex;position:relative}.slidesDetail{justify-content:center;align-items:center;border-radius:10px;box-shadow:0 4px 8px rgba(0,0,0,.2);overflow:hidden}.slideDetail{width:100%;height:100%;object-fit:cover;border-radius:10px;transition:opacity .3s ease-in-out}.nextDetail,.prevDetail{position:absolute;top:50%;transform:translateY(-50%);background-color:rgba(0,0,0,.5);color:#fff;border:none;padding:10px;cursor:pointer;border-radius:50%;font-size:24px}.prevDetail{left:10px}.nextDetail{right:10px}.detail{width:100%;text-align:left}.detail h2{font-size:18px;font-weight:700;color:#000;margin-bottom:10px}.detail p{font-size:16px;margin-bottom:10px;color:#555}.detail p b{font-size:18px;color:#f44;font-weight:700;margin-left:10px}.detail p del{color:red;margin-right:10px;font-size:16px;text-decoration:line-through}.note{font-size:14px;color:#333;margin-top:10px;font-style:italic}.policy{font-size:12px;list-style-type:none}.policy li{margin-bottom:10px}.productActions{display:flex;gap:10px;margin-top:10px}.addToCartBtn,.buyNowBtn{display:flex;align-items:center;padding:8px 15px;border:none;background-color:#f5f5f5;cursor:pointer;font-size:14px}.addToCartBtn:hover,.buyNowBtn:hover{background-color:#e0e0e0}.addToCartBtn svg,.buyNowBtn svg{margin-right:8px;font-size:18px}.addToCartBtn,.buyNowBtn{color:#333}.categoryNav{margin-top:20px;margin-bottom:-15px;padding:10px;background-color:#f9f9f9;border-radius:5px;text-align:center}.categoryNav ul{list-style-type:none;padding:0;margin:0;display:flex;justify-content:center;gap:20px}.categoryNav li{display:inline-block}.categoryNav a{text-decoration:none;color:#333;font-size:18px;font-weight:700;padding:10px 20px;border-radius:5px}.categoryNav a:hover{background-color:#ddd;color:#000}@media (max-width:768px){.productItem{width:95%;flex-direction:column;height:auto}.slidesDetail{width:100%;height:50vh}.detail{width:100%;margin-top:20px}.productActions{flex-direction:row;gap:15px}.addToCartBtn,.buyNowBtn{width:100%;flex-direction:row}.categoryNav ul{flex-direction:row;align-items:center}.categoryNav a{font-size:16px;padding:8px 6px}}@media (max-width:480px){.categoryNav a{font-size:14px;padding:8px 2px}}