.site-header{
    background:#fff;
    padding:20px 0;
    position:sticky;
    top:0;
    z-index:999;
    box-shadow:0 2px 10px rgba(0,0,0,0.05);
}

.navbar{
    display:flex;
    justify-content:space-between;
    align-items:center;
}

.logo a{
    font-size:28px;
    font-weight:bold;
    text-decoration:none;
    color:#222;
}

.main-menu ul{
    display:flex;
    list-style:none;
    gap:20px;
}

.main-menu a{
    text-decoration:none;
    color:#222;
}

.hero-section{
    background:#111827;
    color:#fff;
}