/* ========== mainImage ========== */
.c-mainImage-04 {
  background-image: url(/service/ai_japan_market/img/mainImage_01@x2.jpg);
}
@media only screen and (max-width: 640px) {
  .c-mainImage-04.sp {
    background-image: url(/service/ai_japan_market/img/mainImage_01_sp@x2.jpg);
  }
}