.site-header {
    position: relative;
    z-index: 20;
    border-bottom: 1px solid var(--line);
    background: var(--paper);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    min-height: var(--site-header-height);
    width: calc(100% - 2 * var(--page-gutter));
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: .65rem;
    color: var(--anthracite);
    font-size: .76rem;
    font-weight: 600;
    letter-spacing: .04em;
    line-height: .88;
    text-transform: uppercase;
    flex-shrink: 0;
}

.brand-image {
    width: auto;
    max-width: 9rem;
    height: 2.75rem;
    object-fit: contain;
}

.brand strong {
    font-weight: 800;
}

.brand-mark {
    display: grid;
    width: 2.25rem;
    height: 2.25rem;
    place-items: center;
    border-radius: 0;
    color: var(--white);
    background: var(--navy);
    font-size: 1.1rem;
    font-style: normal;
    font-weight: 800;
    transform: none;
    clip-path: polygon(0 0, 100% 0, 78% 100%, 0 100%);
}

.main-navigation {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.main-navigation ul {
    display: flex;
    gap: 1.6rem;
    padding: 0;
    margin: 0;
    list-style: none;
}

.main-navigation li a {
    position: relative;
    padding-block: .35rem;
    color: var(--heading);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
}

.main-navigation li a::after {
    position: absolute;
    right: 0;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--blue);
    content: "";
    transform: scaleX(0);
    transition: transform .2s;
}

.main-navigation li a:hover,
.main-navigation li a[aria-current="page"] {
    color: var(--navy);
}

.main-navigation li a:hover::after,
.main-navigation li a[aria-current="page"]::after {
    transform: scaleX(1);
}

.menu-toggle {
    position: relative;
    display: none;
    width: 2.6rem;
    height: 2.6rem;
    padding: .6rem;
    border: 1px solid var(--line);
    border-radius: 0;
    background: transparent;
}

.menu-toggle::before,
.menu-toggle::after {
    position: absolute;
    top: 50%;
    right: .6rem;
    left: .6rem;
    height: 1px;
    background: var(--navy);
    content: "";
    transition: transform .2s, box-shadow .2s;
}

.menu-toggle::before {
    box-shadow: 0 5px 0 var(--navy);
    transform: translateY(-5px);
}

.menu-toggle::after {
    transform: translateY(5px);
}

@media (forced-colors: active) {
    .menu-toggle {
        border: 1px solid ButtonText;
    }

    .menu-toggle::before,
    .menu-toggle::after {
        background: ButtonText;
    }

    .menu-toggle:not(.is-open)::before {
        box-shadow: 0 5px 0 ButtonText;
        forced-color-adjust: none;
    }
}

@media(max-width:880px) {
    :root {
        --site-header-height: 4.5rem;
    }

    .menu-toggle {
        display: block;
    }

    .main-navigation {
        position: absolute;
        top: calc(100% + 1px);
        right: var(--page-gutter);
        left: var(--page-gutter);
        display: grid;
        gap: 1.3rem;
        padding: 1.4rem;
        border: 1px solid var(--line);
        background: var(--surface);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-.5rem);
        transition: opacity .2s, transform .2s, visibility .2s;
        max-height: calc(100svh - var(--site-header-height) - 1rem);
        overflow-y: auto;
    }

    .main-navigation.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .main-navigation ul {
        display: grid;
        gap: .45rem;
    }

    .main-navigation li a {
        display: block;
        padding-block: .6rem;
        font-size: .82rem;
    }

    .main-navigation .button {
        width: 100%;
    }

    .menu-toggle.is-open::before {
        box-shadow: none;
        transform: rotate(45deg);
    }

    .menu-toggle.is-open::after {
        transform: rotate(-45deg);
    }

    .site-header:has(.main-navigation.is-open) {
        position: sticky;
        top: 0;
    }

    .site-header:not(.navigation-ready) .header-inner {
        flex-wrap: wrap;
        padding-block: 1rem;
    }

    .site-header:not(.navigation-ready) .main-navigation {
        position: static;
        width: 100%;
        border: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
    }

    .site-header:not(.navigation-ready) .menu-toggle {
        display: none;
    }
}