.site-header {
    background-color: #fff;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}
.logo-text {
    font-size: 1.8rem;
    letter-spacing: -0.5px;
}
.navbar-nav .nav-link {
    color: #1e2a3e;
    font-weight: 500;
}
.navbar-nav .nav-link:hover {
    color: #0d6efd;
}
@media (max-width: 991px) {
    .header-contacts {
        margin-top: 1rem;
        justify-content: center;
    }
}