*{margin:0;padding:0;box-sizing:border-box}body{font-family:Helvetica Neue,Helvetica,Arial,sans-serif;color:#333;line-height:1.6;background-color:#fff;height:100vh;overflow:hidden;display:flex;flex-direction:column}.navbar{position:relative;width:100%;display:flex;justify-content:flex-end;padding:20px 40px;z-index:100;background-color:#fff;flex-shrink:0;border-bottom:1px solid #f0f0f0}.navbar a{color:#333;text-decoration:none;margin-left:30px;font-weight:500;font-size:.9rem;text-transform:uppercase;letter-spacing:1px;transition:opacity .3s}.navbar a:hover{opacity:.6;text-decoration:underline}.product-hero{display:flex;flex:1;width:100%;overflow:hidden}.gallery-container{flex:1.2;background-color:#f4f4f4;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;height:100%}.gallery-slide{width:100%;height:100%;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .5s ease-in-out;position:absolute;top:0;left:0}.gallery-slide.active{opacity:1;z-index:2}.gallery-slide img{max-width:80%;max-height:80%;object-fit:contain;box-shadow:0 20px 50px #0006;border-radius:4px}.arrow-btn{position:absolute;top:50%;transform:translateY(-50%);background:#fffc;border:none;width:50px;height:50px;border-radius:50%;cursor:pointer;z-index:10;font-size:1.2rem;color:#333;transition:background .2s;display:flex;align-items:center;justify-content:center}.arrow-btn:hover{background:#fff;box-shadow:0 4px 10px #0000001a}.prev-btn{left:20px}.next-btn{right:20px}.info-container{flex:1;height:100%;overflow-y:auto;display:flex;flex-direction:column;justify-content:flex-start;padding:60px;background:#fff}.product-title{font-size:3rem;font-weight:700;margin-bottom:10px;letter-spacing:-1px}.product-price{font-size:2rem;font-weight:400;color:#555;margin-bottom:30px}.product-intro{font-size:1.1rem;margin-bottom:40px;max-width:500px;color:#666}.purchase-btn{display:inline-block;background-color:#000;color:#fff;padding:20px 60px;font-size:1.2rem;font-weight:600;border:none;border-radius:50px;cursor:pointer;text-align:center;width:fit-content;transition:transform .2s,background .2s}.purchase-btn:hover{background-color:#333;transform:translateY(-2px)}.shipping-note{margin-top:15px;font-size:.8rem;color:#999}.details-section{max-width:800px;margin:0;padding:20px 0}.details-section h3{font-size:2rem;margin-bottom:20px;margin-top:40px}.details-section p{font-size:1.1rem;margin-bottom:20px;color:#444}.details-section ul{margin-left:20px;margin-bottom:30px;color:#444}.details-section li{margin-bottom:10px;font-size:1.1rem}@media(max-width:900px){body{height:auto;overflow:auto;overflow-x:hidden;display:block}.product-hero{flex-direction:column;height:auto}.gallery-container{height:50vh;width:100%}.info-container{padding:40px 20px;height:auto;overflow-y:visible}.product-title{font-size:2.5rem}}