.site-header {
    background: #fff;
    border-bottom: 1px solid #eee;
    padding: 15px 0;
    position: relative;
    z-index: 100;
}

.nav-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    position: relative;
}

.logo {
    flex-shrink: 0;
}

.logo-link {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
}

.logo-image {
    display: block;
    height: 48px;
    width: auto;
    max-width: 160px;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-left: auto;
}

.site-nav a {
    text-decoration: none;
    color: #555;
    white-space: nowrap;
}

.site-nav a:hover {
    color: #000;
}

.nav-cta {
    padding: 8px 14px;
    border: 1px solid #ccc;
    border-radius: 6px;
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 0;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #fff;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    flex-shrink: 0;
}

.nav-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: #111;
    border-radius: 2px;
}

@media (max-width: 900px) {
    .nav-shell {
        flex-wrap: wrap;
    }

    .logo-image {
        height: 40px;
        max-width: 130px;
    }

    .nav-toggle {
        display: inline-flex;
        margin-left: auto;
    }

    .site-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding-top: 12px;
        margin-left: 0;
    }

    .site-nav.is-open {
        display: flex;
    }

    .site-nav a {
        display: block;
        width: 100%;
        padding: 12px 0;
        border-top: 1px solid #eee;
    }

    .nav-cta {
        padding: 12px 0;
        border: 0;
        border-radius: 0;
    }
}

@media (max-width: 640px) {
    .site-header {
        padding: 12px 0;
    }

    .logo-image {
        height: 36px;
        max-width: 120px;
    }
}