.manual .content {
  padding: 6rem 0;
}

.manual .content .title {
  color: #333;
  font-size: 3.2rem;
  line-height: 4.2rem;
  font-weight: 700;
}

.manual .content .line {
  width: 3.2rem;
  height: 0.3rem;
  background: var(--color);
  margin: 2rem auto;
}

.manual .content .box {
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
}

.manual .content .box .item {
  width: calc(50% - 2rem);
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  margin-top: 6rem;
  margin-left: 4rem;
}

.manual .content .box .item:nth-child(odd) {
  margin-left: 0;
}

.manual .content .box .item .left {
  display: block;
  max-width: 396px;
}

.manual .content .box .item .text {
  text-align: left;
  margin-left: 2rem;
}

.manual .content .box .item .text .tit {
  line-height: 2.6rem;
  color: #333;
  font-size: 1.8rem;
}

.manual .content .box .item .text .size {
  line-height: 1.8rem;
  color: grey;
  font-size: 1.4rem;
  margin: 2rem 0 0.5rem;
}

.manual .content .box .item .text .size img {
  width: 1.8rem;
  height: 1.8rem;
  -o-object-fit: cover;
  object-fit: cover;
  display: inline-block;
  vertical-align: sub;
  margin-right: 0.5rem;
}

.manual .content .box .item .text button {
  height: 4.2rem;
  border: 0.1rem solid #e9e9e9;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  background: #fafafa;
  font-size: 1.4rem;
  color: #333;
  padding: 1.1rem 1.8rem;
  margin-top: 2.2rem;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  cursor: pointer;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}

.manual .content .box .item .text button .icon {
  margin-right: 0.8rem;
}

.manual .content .box .item .text button .icon svg {
  fill: #666;
}

.manual .content .box .item .text button:hover {
  border-color: #fff;
  color: #fff;
  background: var(--color);
}

.manual .content .box .item .text button:hover .icon svg {
  fill: #fff;
}

.manual.en .content .sub {
  width: 85rem;
  margin: 0 auto;
}

.manual.en .content .box .item .text button {
  font-size: 1.6rem;
}

@media screen and (max-width: 768px) {
  .manual .content {
    padding: 1.5rem 0;
  }

  .manual .content .title {
    font-size: 2rem;
    line-height: 1.5;
  }

  .manual .content .line {
    margin: 1rem auto;
  }

  .manual .content .sub {
    line-height: 1.5;
  }

  .manual .content .box {
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    justify-content: space-between;
  }

  .manual .content .box .item {
    margin-top: 1.5rem;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    width: calc(50% - 0.8rem);
    margin-left: 1.6rem;
  }

  .manual .content .box .item .left {
    width: 100%;
  }

  .manual .content .box .item .text {
    margin: 0;
    margin-top: 1rem;
  }

  .manual .content .box .item .text .tit {
    font-size: 1.4rem;
    line-height: 1.5;
  }

  .manual .content .box .item .text .size {
    font-size: 1.2rem;
    margin: 0;
    line-height: 2;
  }

  .manual .content .box .item .text button {
    margin-top: 1rem;
    font-size: 1.4rem;
    padding: 1rem;
    width: 100%;
  }

  .manual.en .content .box .item .text button {
    font-size: 1.4rem;
  }
}