* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Roboto', sans-serif; line-height: 1.7; color: #333; background: #fff; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

.header-nav { 
    background: rgba(255, 255, 255, 0.95); 
    position: sticky; 
    top: 0; 
    z-index: 1000; 
    padding: 15px 0; 
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.nav-list { 
    display: flex; 
    justify-content: center; 
    gap: 40px; 
}
.nav-list li a { 
    color: #000; 
    font-size: 17px; 
    font-weight: 500; 
    padding: 8px 0;
    transition: color 0.3s;
}
.nav-list li a:hover { 
    color: #556b2f; 
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .nav-list { gap: 25px; }
}
@media (max-width: 480px) {
    .nav-list { flex-direction: column; text-align: center; gap: 15px; }
}