@charset "UTF-8";
/*----------------------------------------
  Youtube 埋め込み動画 mixin
----------------------------------------*/
/*----------------------------------------
  browser default value
----------------------------------------*/
/*----------------------------------------
  base
----------------------------------------*/
/*----------------------------------------
  z-index
----------------------------------------*/
/*----------------------------------------
  color
----------------------------------------*/
/*----------------------------------------
  opacity
----------------------------------------*/
/*----------------------------------------
  size
----------------------------------------*/
/*----------------------------------------
  transition
----------------------------------------*/
.mainte_menu {
  width: 100%;
  background-color: #000000;
  text-align: center;
  padding: 40px 15px;
}

.mainte_menu_title {
  color: #ffffff;
  font-weight: bold;
  font-size: 2.2rem;
  margin-bottom: 30px;
}

.mainte_menu .anchor.o-red {
  text-align: left;
}

.mainte_qa_item {
  padding-top: 40px;
  padding-bottom: 60px;
  border-bottom: 1px solid #c1c1c1;
}

.mainte_qa_item:first-child {
  padding-top: 0;
}

.mainte_qa_item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.mainte_qa_q {
  font-size: 2.4rem;
  font-weight: bold;
}

.mainte_qa_q::before {
  display: inline;
  content: 'Q.';
  font-size: 2.4rem;
  font-weight: bold;
}

.mainte_qa_a {
  margin-top: 15px;
  padding-left: 28px;
  text-indent: -26px;
  line-height: 1.6875;
}

.mainte_qa_a::before {
  display: inline;
  content: 'A.';
  font-size: 2.4rem;
  font-weight: bold;
}

.mainte_related_title {
  font-size: 2.4rem;
  font-weight: bold;
}

.mainte_related_list {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
}

.mainte_related_item {
  margin-top: 25px;
  transition: opacity 0.3s cubic-bezier(0.13, 0.78, 0.38, 0.98);
  width: 270px;
}

.mainte_related_item:hover {
  opacity: 0.7;
}

.mainte_related_item:hover .anchor {
  text-decoration: underline;
}

.mainte_related_name {
  font-weight: bold;
  color: #343434;
  font-size: 2.0rem;
  margin-bottom: 20px;
}

.mainte_related_lead {
  font-size: 1.6rem;
  color: #707070;
  margin-bottom: 15px;
}

.mainte_related_image_wrapper {
  margin-bottom: 20px;
}

.mainte_article {
  padding-top: 60px;
  padding-bottom: 100px;
}

.mainte_title {
  font-size: 4.2rem;
  font-weight: bold;
}

.mainte_title_wrapper {
  text-align: center;
  margin-bottom: 60px;
}

.mainte_title_description {
  font-size: 2.8rem;
  font-weight: bold;
  line-height: 1.4;
}

.mainte_horizontal_layout {
  display: flex;
  justify-content: space-between;
}

.mainte_horizontal_left {
  width: 470px;
}

.mainte_horizontal_right {
  flex: 1 1 670px;
  padding-left: 30px;
}

.main_title {
  margin-top: -54px;
  padding-top: 54px;
}

.section + .section {
  margin-top: 80px;
}

.mainte_introduction_block {
  margin-bottom: 40px;
  font-size: 1.8rem;
}

.mainte_list_wrapper {
  margin-top: 20px;
}

.mainte_list_wrapper:first-child {
  margin-top: 0;
}

.mainte_list_item {
  padding-left: 26px;
  position: relative;
  line-height: 1.875;
}

.mainte_list_item::before {
  display: block;
  content: '';
  width: 6px;
  height: 6px;
  background-color: #000000;
  border-radius: 3px;
  position: absolute;
  left: 10px;
  top: 12px;
}

.mainte_table_wrapper {
  margin-top: 20px;
}

.mainte_table_wrapper:first-child {
  margin-top: 0;
}

.mainte_caution_wrapper {
  margin-top: 15px;
}

.mainte_caution_wrapper:first-child {
  margin-top: 0;
}

.mainte_caution_item {
  color: #666666;
  font-size: 1.2rem;
  padding-left: 12px;
  text-indent: -12px;
}

.mainte_link_wrapper {
  margin-top: 20px;
}

.mainte_link_wrapper:first-child {
  margin-top: 0;
}

.mainte_horizontal_photo {
  margin-top: 20px;
}

.mainte_horizontal_photo.o-margin {
  margin-top: 30px;
}

.mainte_point {
  counter-reset: item;
}

.mainte_point_item:not(:first-child) {
  margin-top: 40px;
}

.mainte_point_item:nth-child(2) .mainte_point_title {
  margin-bottom: 12px;
}

.mainte_point_item:nth-child(2) .mainte_point_note {
  margin-bottom: 40px;
}

.mainte_point_item:last-child .mainte_point_text {
  margin-top: 8px;
}

.mainte_point_wrapper {
  display: flex;
}

.mainte_point_half:not(:last-child) {
  margin-right: 30px;
}

.mainte_point_title {
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 30px;
}

.mainte_point_title::before {
  content: "POINT" counter(item) " ";
  color: #c71444;
  counter-increment: item;
}

.mainte_point_title_small {
  font-size: 1.2rem;
  vertical-align: super;
  margin-left: 5px;
  font-weight: normal;
}

.mainte_point_title_note {
  font-size: 1.2rem;
  color: #666666;
}

.mainte_point_text {
  font-size: 1.6rem;
  margin: 30px 0 20px 0;
}

.mainte_point_small {
  font-size: 1.2rem;
  margin-top: 15px;
  color: #666;
}

.mainte_point_explain {
  font-size: 1.2rem;
  color: #666;
  line-height: 1.7;
}

.mainte_point_explain_text {
  margin-left: 26px;
  padding-left: 15px;
  position: relative;
}

.mainte_point_explain_text::before {
  content: "";
  position: absolute;
  width: 11px;
  height: 11px;
  background-color: #666;
  border-radius: 50%;
  top: 4px;
  left: 0;
}

.mainte_point_note {
  font-size: 1.2rem;
  color: #666;
  line-height: 1.7;
}

.mainte_point_note.o-indent {
  margin-left: 26px;
  text-indent: -1em;
  padding-left: 1em;
}

@media screen and (max-width: 979px) and (min-width: 768px) {
  .mainte_horizontal_left {
    width: 40.2%;
  }
  .mainte_horizontal_right {
    width: 57.3%;
  }
  .mainte_point_item:first-child .mainte_point_half:first-child {
    width: 60.7%;
  }
  .mainte_point_item:first-child .mainte_point_half:last-child {
    width: 36.7%;
  }
  .image {
    width: 100%;
    height: auto;
  }
}

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