.container {
    width: min(calc(100% - (var(--space-container) * 2)), var(--container-width));
    margin-inline: auto;
}

.site-header {
    position: fixed;
    inset: 0 0 auto;
    z-index: 1000;
    height: var(--header-height);
    border-bottom: 1px solid transparent;
    transition: background-color 240ms ease, border-color 240ms ease, box-shadow 240ms ease;
}

.site-header.is-scrolled {
    border-color: var(--color-line-light);
    background: rgba(21, 21, 18, 0.88);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.14);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
}

.nav-shell {
    position: relative;
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: clamp(1.25rem, 4vw, 4rem);
    height: 100%;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    width: max-content;
}

.brand-mark {
    display: grid;
    width: 2.6rem;
    height: 2.6rem;
    place-items: center;
    border-radius: 50%;
    background: var(--color-lime);
    color: var(--color-ink);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: -0.05em;
}

.brand-name {
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.site-header .brand-name {
    color: var(--color-white);
}

.primary-nav {
    justify-self: center;
}

.primary-nav ul {
    display: flex;
    align-items: center;
    gap: clamp(1.2rem, 2.4vw, 2.4rem);
    padding: 0;
    list-style: none;
}

.primary-nav a {
    position: relative;
    padding-block: 0.55rem;
    color: var(--color-muted-light);
    font-size: 0.84rem;
    font-weight: 500;
    transition: color 180ms ease;
}

.primary-nav a::after {
    position: absolute;
    right: 0;
    bottom: 0.15rem;
    left: 0;
    height: 1px;
    background: var(--color-lime);
    content: "";
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 220ms var(--ease-out);
}

.primary-nav a:hover,
.primary-nav a.is-active {
    color: var(--color-white);
}

.primary-nav a:hover::after,
.primary-nav a.is-active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.menu-toggle {
    display: none;
}