/* Preserve the original artwork and alpha; display a clean white mark on dark navigation. */
img.maos-logo-on-dark {
    background: transparent;
    padding: 0;
    border: 0;
    border-radius: 0;
    filter: brightness(0) invert(1);
}

/* Unmodified official 2026 WhatsApp glyph. Decorative: the visible link keeps its label. */
a[href^="https://wa.me/"]::before {
    content: "";
    display: inline-block;
    width: 24px;
    height: 24px;
    flex: 0 0 24px;
    margin-right: 8px;
    vertical-align: middle;
    background: url("../brand/whatsapp-official-green.svg") center / contain no-repeat;
}