.header{position:fixed;top:0;left:0;right:0;background:rgba(0,0,0,.9);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:1000;border-bottom:1px solid rgba(255,255,255,.1)}.nav{display:flex;justify-content:space-between;align-items:center;padding:1rem 0}.logo h2{color:#fff;font-size:1.5rem;font-weight:700}.logo span{background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-menu{display:flex;gap:2rem;align-items:center}.nav-menu a{color:#fff;text-decoration:none;font-weight:500;transition:color .3s ease;position:relative}.nav-menu a:hover{color:#667eea}.nav-menu a:after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);transition:width .3s ease}.nav-menu a:hover:after{width:100%}.menu-toggle{display:none;flex-direction:column;background:none;border:none;cursor:pointer;padding:.5rem}.menu-toggle span{width:25px;height:2px;background:white;margin:3px 0;transition:.3s}@media (max-width:768px){.nav-menu{position:fixed;top:100%;left:0;right:0;background:rgba(0,0,0,.95);flex-direction:column;padding:2rem;gap:1.5rem;transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s ease}.nav-menu.active{transform:translateY(0);opacity:1;visibility:visible}.menu-toggle{display:flex}}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Arial,sans-serif;background:linear-gradient(to bottom,#f0f0f0,#e0e0e0);color:#333}.header{background-color:#fff;box-shadow:0 2px 4px #0000001a;padding:1rem}.header nav ul{display:flex;justify-content:center;list-style-type:none}.header nav ul li{margin:0 1rem}.header nav ul li a{color:#333;text-decoration:none}.hero-section{display:flex;justify-content:center;align-items:center;height:80vh;padding:2rem}.hero-content{text-align:center}.hero-content h1{font-size:3rem;margin-bottom:1rem}.hero-content p{font-size:1.5rem;margin-bottom:2rem}.hero-content button{background-color:#333;color:#fff;border:none;padding:1rem 2rem;font-size:1.2rem;cursor:pointer}.product-section{padding:2rem}.product-section h2{font-size:2rem;margin-bottom:2rem}.product-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));grid-gap:2rem}.footer{background-color:#333;color:#fff;padding:1rem;text-align:center}