@supports (-webkit-appearance: none) or (-moz-appearance: none) {
  .checkbox-group input[type=checkbox] {
    --active: #275EFE !important;
    --active-inner: #fff;
    --focus: 2px rgba(39, 94, 254, .3);
    --border: #BBC1E1;
    --border-hover: #275EFE;
    --disabled: #F6F8FF;
    --disabled-inner: #E1E6F9;
    -webkit-appearance: none;
    -moz-appearance: none;
    height: 21px;
    width: 21px;
    outline: none;
    display: inline-block;
    vertical-align: top;
    position: relative;
    margin: 0;
    cursor: pointer;
    border: 1px solid var(--bc, var(--border));
    background: var(--b, var(--background));
    transition: background 0.3s, border-color 0.3s, box-shadow 0.2s;
    border-radius: 7px;
  }

  .checkbox-group input[type=checkbox]:after {
    content: "";
    display: block;
    position: absolute;
    transition: transform var(--d-t, 0.3s) var(--d-t-e, ease), opacity var(--d-o, 0.2s);
  }

  /* Checkbox Marcado */
  .checkbox-group input[type=checkbox]:checked {
    --b: var(--active);
    --bc: var(--active);
    --d-o: .3s;
    --d-t: .6s;
    --d-t-e: cubic-bezier(.2, .85, .32, 1.2);
  }

  /* Checkbox Desativado */
  .checkbox-group input[type=checkbox]:disabled {
    --b: var(--disabled);
    cursor: not-allowed;
    opacity: 0.9;
  }

  .checkbox-group input[type=checkbox]:disabled:checked {
    --b: var(--disabled-inner);
    --bc: var(--border);
  }

  .checkbox-group input[type=checkbox]:disabled + label {
    cursor: not-allowed;
  }

  /* Hover */
  .checkbox-group input[type=checkbox]:hover:not(:checked):not(:disabled) {
    --bc: var(--border-hover);
  }

  /* Foco */
  .checkbox-group input[type=checkbox]:focus {
    box-shadow: 0 0 0 var(--focus);
  }

  /* Ícone de "Check" no Checkbox Marcado */
  .checkbox-group input[type=checkbox]:not(.switch):checked:after {
    content: "";
    width: 5px;
    height: 9px;
    border: 2px solid var(--active-inner);
    border-top: 0;
    border-left: 0;
    left: 7px;
    top: 4px;
    transform: rotate(43deg);
    opacity: 1;
  }

  /* Estilo para o Estado Indeterminate */
  .checkbox-group input[type=checkbox]:indeterminate {
    --b: var(--border-hover);
    --bc: var(--border-hover);
  }

  /* Ícone de "Traço" no Checkbox Indeterminate */
  .checkbox-group input[type=checkbox]:indeterminate:after {
    content: "";
    width: 10px;
    height: 2px;
    background-color: var(--active-inner);
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    position: absolute;
    border-radius: 1px;
    opacity: 1;
  }

  .checkbox-group input[type=checkbox] + label {
    display: inline-block;
    vertical-align: middle;
    cursor: pointer;
    margin-left: 4px;
  }
}

.checkbox-group * {
  box-sizing: inherit;
}

.checkbox-group *:before,
.checkbox-group *:after {
  box-sizing: inherit;
}