.site-header {
    position: fixed;
    z-index: 100;
    top: 0;
    right: 0;
    left: 0;
    border-bottom: 1px solid transparent;
    transition: background var(--transition), border-color var(--transition), backdrop-filter var(--transition);
}

.site-header.is-scrolled {
    border-color: var(--color-line);
    background: rgb(13 13 13 / 86%);
    backdrop-filter: blur(16px);
}

.site-header__inner {
    display: flex;
    min-height: 5rem;
    align-items: center;
    justify-content: space-between;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 2.25rem;
}

.site-nav__list {
    display: flex;
    margin: 0;
    padding: 0;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.site-nav__list a {
    color: var(--color-muted);
    font-size: .92rem;
    font-weight: 600;
    transition: color var(--transition);
}

.site-nav__list a:hover {
    color: var(--color-text);
}

.menu-toggle {
    display: none;
    width: 2.75rem;
    height: 2.75rem;
    padding: .7rem;
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    background: transparent;
}

.menu-toggle > span:not(.screen-reader-text) {
    display: block;
    width: 100%;
    height: 1px;
    margin: .35rem 0;
    background: currentColor;
    transition: transform var(--transition);
}

@media (max-width: 760px) {
    body.menu-open {
        overflow: hidden;
    }

    .menu-toggle {
        display: block;
    }

    .site-nav {
        position: fixed;
        z-index: -1;
        top: 0;
        right: 0;
        left: 0;
        display: flex;
        min-height: 100svh;
        padding: 7rem 1.5rem 2rem;
        align-items: stretch;
        justify-content: flex-start;
        flex-direction: column;
        visibility: hidden;
        background: var(--color-bg);
        opacity: 0;
        transform: translateY(-1rem);
        transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
    }

    .site-nav.is-open {
        visibility: visible;
        opacity: 1;
        transform: none;
    }

    .site-nav__list {
        align-items: stretch;
        flex-direction: column;
        gap: 0;
    }

    .site-nav__list a {
        display: block;
        padding: 1rem 0;
        border-bottom: 1px solid var(--color-line);
        color: var(--color-text);
        font-size: 1.5rem;
    }
}