/* remove o passarinho antigo */
.a2a_button_twitter .a2a_svg svg {
  display: none !important;
}

/* mantém o container como base */
.a2a_button_twitter .a2a_svg {
  background-color: #000 !important;
  position: relative;
}

/* injeta o logo do X */
.a2a_button_twitter .a2a_svg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-repeat: no-repeat;
  background-position: center;
  background-size: 60% 60%;

  /* SVG do X embutido (data URI) */
  background-image: url("data:image/svg+xml;utf8,\
  <svg viewBox='0 0 1227 1227' xmlns='http://www.w3.org/2000/svg'>\
  <g>\
  <path fill='white' d='m680.617 557.98 262.632-305.288h-62.235l-228.044 265.078-182.137-265.078h-210.074l275.427 400.844-275.427 320.142h62.239l240.82-279.931 192.35 279.931h210.074l-285.641-415.698zm-335.194-258.435h95.595l440.024 629.411h-95.595z'/>\
  </g>\
  </svg>");
}