/* === Nav rule with diamond accents === */
.sb-decoration-nav-rule {
    position: relative;
    height: 2px;
    background: var(--wp--preset--color--ink);
    margin: 0 var(--wp--preset--spacing--lg) var(--wp--preset--spacing--md-plus);
}
.sb-decoration-nav-rule::before,
.sb-decoration-nav-rule::after {
    content: "";
    position: absolute;
    top: -3px;
    width: 8px;
    height: 8px;
    background: var(--wp--preset--color--ink);
    transform: rotate(45deg);
}
.sb-decoration-nav-rule::before { left: -2px; }
.sb-decoration-nav-rule::after  { right: -2px; }
@media (max-width: 600px) {
    .sb-decoration-nav-rule { margin: 0 var(--wp--preset--spacing--sm) var(--wp--preset--spacing--sm-plus); }
}