nav {
            position: fixed;
            top: 0;
            width: 100%;
            background: rgba(10, 14, 39, 0.95);
            backdrop-filter: blur(10px);
            padding: 15px 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }
        
        nav ul {
            list-style-type: none;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        nav ul li {
            position: relative;
            margin: 0 20px;
        }
        
        nav ul li a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1em;
            transition: color 0.3s;
            padding: 10px 15px;
            display: block;
        }
        
        nav ul li a:hover {
            color: #667eea;
        }
        
        .submenu {
            display: none;
            position: absolute;
            background: rgba(26, 31, 58, 0.98);
            backdrop-filter: blur(10px);
            min-width: 200px;
            top: 100%;
            left: 0;
            border-radius: 8px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
            overflow: hidden;
        }
        
        nav ul li:hover .submenu {
            display: block;
        }
        
        .submenu li {
            margin: 0;
        }
        
        .submenu li a {
            padding: 12px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .submenu li:last-child a {
            border-bottom: none;
        }
        
        body {
            padding-top: 60px;
        }