.page-head {
  background-image: url(images/title-bg.jpg);
}
.introduce {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  align-items: center;
  margin-top: calc(var(--padding-large) * 2);
  padding: 0 var(--padding-large);
}
.introduce__img {
  flex-basis: 48%;
  border-radius: var(--size-border-radius);
  overflow: hidden;
}
.introduce__img img {
  width: 100%;
  vertical-align: middle;
}
.introduce__texts {
  flex-basis: 48%;
  max-width: 569px;
  padding: var(--padding-large) 0;
}
.introduce__texts .title {
  display: inline-block;
  font-size: var(--font-medium);
  padding-bottom: var(--padding-large);
  margin-bottom: var(--padding-large);
  border-bottom: 1px solid var(--color-grey);
}
.introduce__texts .text {
  font-size: var(--font-regular);
  color: var(--color-grey);
  padding-bottom: calc(var(--padding-large) * 2);
  line-height: var(--line-height-regular);
}
.introduce__texts .name {
  font-size: var(--font-medium);
  text-align: right;
}
/* 48rem = 768px */
@media screen and (max-width: 48rem) {
  .page-head {
    background-image: url(images/title-bg_m.jpg);
    background-position: center;
  }
  .introduce {
    flex-direction: column;
  }
}