.installation {
  padding-top: 30px;
}

.installation .title {
  margin-bottom: 15px;
}

.installation .lt {
  margin-bottom: 20px;
}

.installation .lt iframe {
  width: 100%;
  height: auto;
  background: #333;
  aspect-ratio: 718 / 485;
  display: block;
}

.installation .info {
  line-height: 30px;
}

@media (min-width: 992px) {
  .installation .item-wrap {
    display: flex;
    align-items: center;
  }

  .installation .lt {
    flex: 0 0 calc((718 / 1400) * 100%);
    margin-bottom: 0;
  }

  .installation .rt {
    flex: 1;
    padding-left: 30px;
  }
}

@media (min-width: 1200px) {
  .installation {
    padding-top: 30px;
  }

  .installation .title {
    margin-bottom: 30px;
  }

  .installation .rt {
    padding-left: 58px;
  }
}

@media (min-width: 1440px) {
  .installation {
    padding-top: 74px;
  }

  .installation .title {
    margin-bottom: 53px;
  }
}


/* download */
.download {
  padding: 30px 0;
}

.download .title {
  margin-bottom: 15px;
}

.download .title-top {
  display: flex;
}

.download .download-item {
  display: flex;
}

.download .item {
  flex-shrink: 0;
  padding: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.download .title-top .item {
  height: 80px;
  color: var(--sub-color);
  background: var(--style-color);
}

.download .download-item .item {
  height: 85px;
  border-bottom: 1px solid #D1D1D1;
}

.download .item:nth-child(1) {
  flex: 1;
  min-width: 300px;
  padding-left: 30px;
  justify-content: flex-start;
}

.download .item:nth-child(2) {
  width: 188px;
}

.download .item:nth-child(3) {
  width: 166px;
}

.download .item:nth-child(4) {
  width: 223px;
}

.download .item:nth-child(5) {
  width: 208px;
}

.download .item i {
  font-size: 25px;
}

@media (min-width: 1200px) {
  .download {
    padding: 60px 0;
  }

  .download .title {
    margin-bottom: 53px;
  }

  .download .title-top .item {
    min-height: 80px;
  }

  .download .download-item .item {
    min-height: 85px;
    border-width: 2px;
  }

  .download .item:nth-child(1) {
    padding-left: 59px;
  }

  .download .download-item:hover {
    color: var(--sub-color);
  }
}

@media (min-width: 1440px) {
  .download {
    padding-top: 74px;
    padding-bottom: 80px;
  }

  .download .title {
    margin-bottom: 53px;
  }
}