=basic-font($text-rendering: true)
  font-family: $basic-sans-serif
  *font-family: $basic-legacy-ie-sans-serif
  @if $text-rendering
    text-rendering: optimizelegibility

=sans-serif($text-rendering: true)
  font-family: $basic-sans-serif
  *font-family: $basic-legacy-ie-sans-serif
  @if $text-rendering
    text-rendering: optimizelegibility

=bold-ja($text-rendering: true)
  font-family: $basic-bold-sans-serif
  *font-family: $basic-legacy-ie-sans-serif
  font-weight: bold
  @if $text-rendering
    text-rendering: optimizelegibility

=serif($text-rendering: true)
  font-family: $basic-serif
  *font-family: $basic-legacy-ie-sans-serif
  @if $text-rendering
    text-rendering: optimizelegibility

=is-ja
  &.is-ja
    @content

=is-bold-ja
  &.is-bold-ja
    @content

=webfont-ja-sans-selif
  @if $fw == 'bold' or $fw > 500
    +is-bold-ja
      +basic-bold-font
  @else
    +is-ja
      +basic-font

=clear-type
  +transform-origin(0, 0)
  +scale(1, 1.01)
  -ms-transform: scale(1, 1.02)