.article-wrap {
  display: flex;
  flex-direction: column;
  max-width: 1000px;
  font-family: Noto Sans JP, sans-serif;
  color: #4B4B4B;
  padding-top: 100px;
}

.article-contents-wrap {
  display: flex;
  max-width: 1000px;
}

#breadcrumb.head {
  text-align: left;
  padding: 0 0 20px;
  margin: 0;
}

.article-meta span {
  display: inline-block;
}

.article-contents {
  display: flex;
  flex-direction: column;
  max-width: 1000px;
  width: 75%;
  word-wrap: break-word;
}

.article-contents p {
  font-size: 18px;
}

.article-meta {
  margin-top: 40px;
  font-size: 12px;
  color: #AAAAAA;
}

.article-contents .article-meta img {
  display: inline-block;
  vertical-align: text-bottom;
  height: 15px;
  width: 15px;
  margin-right: 5px;
}

.article-contents h1 {
  font-size: 28px;
  font-weight: 600;
  margin: 20px 0;
  color: #4B4B4B;
}

.article-contents h1+p {
  margin-top: 0;
}

.article-contents h2 {
  text-align: center;
  font-size: 24px;
  font-weight: 600;
  border-top: 1px dashed #707070;
  border-bottom: 1px dashed #707070;
  padding: 25px 0;
  margin: 70px 0 0;
}

.article-contents h3 {
  margin: 60px 0 0;
  padding-left: 25px;
  border-left: 4px solid #7F212F;
  font-size: 22px;
  font-weight: 600;
  line-height: 28px;
  height: 24px;
}

.article-contents h4 {
  margin: 40px 0 0;
  padding: 0px 0px 5px 0px;
  border-bottom: 1px dashed #707070;
  font-size: 18px;
  font-weight: 600;
  line-height: 18px;
  height: 30px;
}

.article-contents p {
  color: #4B4B4B;
  letter-spacing: 0.06em;
  line-height: 2;
  margin-top: 24px;
}

.article-contents>img {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 30px;
}

.article-index {
  display: flex;
  position: relative;
  flex-direction: column;
  margin-top: 70px;
  background: #F5F4F2;
  padding: 43px;
  border-radius: 10px;
}


.article-index-title {
  text-align: center;
  font-size: 24px;
}

.article-index-items {
  display: none;
  flex-direction: column;
  margin-top: 40px;
  counter-reset: my-counter;
  list-style: none;
}

.article-index.is-open .article-index-items {
  display: flex;
}

.article-index-items a {
  color: #4B4B4B;
}

.article-index-mainitem {
  font-size: 16px;
  line-height: 30px;
  margin-left: 20px;
  margin-bottom: 5px;
}

.article-index-mainitem::before {
  content: counter(my-counter);
  counter-increment: my-counter;
  display: inline-block;
  margin-right: 20px;
  height: 30px;
  width: 30px;
  transform: translateY(-2px);
  background: #FFFFFF;
  text-align: center;
  font-size: 12px;
  line-height: 30px;
}

.article-index-subitems {
  list-style: none;
  margin: 5px 0 10px;
}

.article-index-subitem::before {
  content: "└";
  font-size: 21px;
  color: #C2A27A;
  margin-right: 28px;
}

.article-index-toggle {
  position: absolute;
  right: 40px;
  font-size: 12px;
}

.article-index-toggle:hover {
  cursor: pointer;
}

.article-index .article-index-toggle .open {
  display: none;
}

.article-index.is-open .article-index-toggle .open {
  display: inline;
}

.article-index-toggle>.pc {
  display: inline-block;
}

.accordion-arrow {
  background-image: url('../img/icon_arrow_upper.svg');
  background-size: cover;
  display: inline-block;
  vertical-align: middle;
  width: 14px;
  height: 7px;
  margin: 0 5px;
  transform: rotate(0.5turn);
}

.article-index.is-open .accordion-arrow {
  transform: rotate(0);
}

.article-box {
  display: flex;
  flex-direction: column;
  padding: 35px 50px;
  margin-top: 40px;
}

.article-box.bg-white {
  border: 4px solid #D8E8E7;
}

.article-box.bg-gray {}

.article-box .article-box-title {
  display: block;
  text-align: center;
  color: #003447;
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 30px;
}

.article-box-img {
  display: block;
  width: 60%;
  height: auto;
  margin: 20px auto 0;
}

.article-box .article-box-title__gray {
  background: #F6F6F6;
  border-radius: 30px;
  width: 60%;
  height: 49px;
  margin-left: 20%;
  margin-right: 20%;
  color: #003447;
  font-size: 18px;
  font-weight: 600;
  line-height: 48px;
  text-align: center;
}

.article-box .checklist {
  list-style: none;
  font-weight: 600;
  margin-left: 30px;
}

.article-box .checklist li {
  line-height: 20px;
  margin-bottom: 15px;
}

.article-box .checklist li:last-child { margin-bottom: 0;}

.article-box .checklist li::before {
  content: "";
  background-image: url('../img/icon_check.svg');
  background-size: cover;
  display: inline-block;
  height: 20px;
  width: 23px;
  transform: translate(-15px, 5px);
}


.article-box .dotlist {
  list-style: none;
  font-weight: 600;
  margin-left: 40px;
}

.article-box .dotlist li {
  line-height: 20px;
  margin-bottom: 16px;
}

.article-box .dotlist > li::before {
  content: "";
  display: inline-block;
  height: 14px;
  width: 14px;
  background-color: #A5C4C2;
  border-radius: 100%;
  transform: translateX(-20px);
}

.article-box .dotlist > li > ul li {
  margin: 10px 0px;
}

.article-box ol {
  display: flex;
  flex-direction: column;
  counter-reset: my-counter;
  list-style: none;
  font-weight: 600;
}

.article-box ol li {
  line-height: 20px;
  margin-bottom: 16px;
}

.article-box ol li::before {
  content: counter(my-counter);
  counter-increment: my-counter;
  display: inline-block;
  margin-right: 20px;
  height: 30px;
  width: 30px;
  transform: translateY(-2px);
  background: #A5C4C2;
  color: #FFFFFF;
  text-align: center;
  font-size: 12px;
  line-height: 30px;
}

.article-imgbox {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.article-imgbox-caption {
  background-color: #F5F4F2;
  width: 90%;
  color: #4B4B4B;
  font-size: 16px;
  text-align: center;
  height: 32px;
  line-height: 32px;
}

.article-contents table {
  margin-top: 45px;
}

.article-contents table th,
.article-contents table td {
  padding: 10px;
  text-align: center;
}

.article-contents table thead th {
  background-color: #A5C4C2;
  border: 4px solid #fff;
  color: #fff;
  font-weight: 600;
}

.article-contents table thead th.bgColorPink {
  background-color: #f3b8b3;
}

.article-contents table thead th.bgColorBlue {
  background-color: #a9ccec;
}

.article-contents table tbody td {
  background-color: #F6F6F6;
  border: 4px solid #fff;
}

.article-contents table tbody th {
  background-color: #E3EFEE;
  width: 20%;
  font-weight: 600;
}

.article-summarize-box {
  border: 35px solid #D8E8E7;
  padding: 35px 25px;
  margin-top: 40px;
  line-height: 2.5;
}

.article-ecbanner {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 140px;
}

.article-ecbanner span {
  display: block;
  margin-bottom: 25px;
  font-size: 24px;
  color: #E69979;
}

.article-ecbanner-linkbtn {
  display: inline-block;
  position: relative;
  margin: 50px auto 0;
  min-width: 450px;
  height: 70px;
  border-radius: 60px;
  background-color: #00526F;
  box-shadow: 5px 5px 6px 0px rgba(0, 0, 0, 0.16);
  color: #fff;
  text-align: center;
  line-height: 70px;
}

.article-ecbanner-linkbtn:hover {
  text-decoration: none;
}

.article-ecbanner-linkbtn::after {
  content: "";
  position: absolute;
  background-image: url(../img/icon_arrow.svg);
  background-size: cover;
  top: 28px;
  right: 30px;
  height: 16px;
  width: 10px;
}

.sidebar {
  margin-left: 40px;
  width: calc(25% - 40px);
}

.sidebar>div:not(:first-child) {
  margin-top: 60px;
}

.article-featured-header,
.article-category-header {
  font-size: 18px;
  font-weight: 600;
  color: #7F212F;
}

.article-featured-item {
  margin: 15px 0;
  font-size: 12px;
}

.article-featured-item .article-featured-item-img,
.article-featured-item p {
  margin: 7.5px 0;
  font-size: 12px;
}

.article-category img {
  display: inline-block;
  height: 15px;
  vertical-align: baseline;
  margin-right: 20px;
}

.article-category-lists {
  display: flex;
  flex-direction: column;
  margin: 20px 0;
}

.article-category-list {
  display: block;
  padding: 20px 0;
  border-top: 1px solid #D9D9D9;
}

.article-category-list:last-child {
  border-bottom: 1px solid #D9D9D9;
}

.relative-articles {
  position: relative;
  margin: 110px auto 200px;
  overflow-x: hidden;
}

.relative-articles-bg {
  position: absolute;
  top: 0;
  left: 0;
  background-color: #F5F4F2;
  width: 100%;
  height: 350px;
  z-index: 0;
}

.relative-article-contents {
  display: flex;
  flex-direction: column;
  position: relative;
  margin-top: 0;
}

.relative-articles-arrows {
  position: absolute;
  top: 70px;
  right: 0;
  z-index: 10;
  display: flex;
}

.relative-articles-arrows span {
  display: inline-block;
  background-size: cover;
  height: 18px;
  width: 11px;
  cursor: pointer;
}

.relative-articles-arrows .prev {
  background-image: url('../img/icon_arrow_prev.svg');
  margin-right: 10px;
}

.relative-articles-arrows .next {
  background-image: url('../img/icon_arrow_next.svg');
}

.relative-articles-header {
  margin-top: 70px;
  color: #4B4B4B;
  font-size: 28px;
  font-weight: 600;
  text-align: left;
  z-index: 1;
}

.relative-articles-items {
  display: flex;
  flex-wrap: nowrap;
  margin-top: 70px;
  z-index: 1;
}

.relative-articles-item {
  display: flex;
  flex-direction: column;
  margin-right: 25px;
  min-width: 430px;
  transition: transform 0.5s ease;
}

.relative-articles-item:last-child {
  margin-right: 0;
}

.relative-articles-item-description {
  font-size: 18px;
  font-weight: 600;
  margin-top: 30px;
}

.relative-articles-item-update {
  margin-top: 20px;
  font-size: 12px;
  color: #AAAAAA;
  text-align: right;
}



@media screen and (max-width: 768px) {
  
  .common_inner {
    padding: 0 calc(20 / 735 * 100vw);
  }

  .article-wrap {
    padding-top: 61px;
    flex-direction: column;
    margin: 0px calc(40 / 735 * 100vw) 0;
  }

  .article-wrap p {
    font-size: calc(24 / 735 * 100vw);
    margin-top: calc(40 / 735 * 100vw);
  }

  li {
    font-size: calc(20 / 735 * 100vw);
  }


  .article-contents-wrap {
    flex-direction: column;
  }

  .article-contents {
    width: 100%;
  }

  .article-contents>img {
    margin-top: calc(30 / 735 * 100vw);
  }

  .article-meta {
    font-size: calc(18 / 735 * 100vw);
    color: #AAAAAA;
    margin-top: calc(40 / 735 * 100vw);
  }

  .article-index {
    margin-top: calc(140 / 735 * 100vw);
    padding: calc(43 / 735 * 100vw);
  }

  .article-index-title {
    text-align: center;
    font-size: calc(24 / 735 * 100vw);
  }

  .article-index-items {
    margin-top: calc(40 / 735 * 100vw);
  }

  .article-index-mainitem {
    margin-left: 0;
    margin-bottom: calc(35 / 735 * 100vw);
    font-size: calc(20 / 735 * 100vw);
    line-height: calc(40 / 735 * 100vw);
  }

  .article-index-mainitem::before {
    height: calc(30 / 735 * 100vw);
    width: calc(30 / 735 * 100vw);
    margin-right: calc(20 / 735 * 100vw);
    font-size: calc(12 / 735 * 100vw);
    line-height: calc(30 / 735 * 100vw);
  }

  .article-index-mainitem:last-child {
    margin-bottom: 0;
  }

  .article-index-subitems {
    list-style: none;
    margin: calc(5 / 735 * 100vw) 0 calc(10 / 735 * 100vw) calc(50 / 735 * 100vw);
  }

  .article-index-subitem {
    position: relative;
  }

  .article-index-subitem::before {
    content: "└";
    display: inline-block;
    font-size: calc(20 / 735 * 100vw);
    color: #C2A27A;
    position: absolute;
    top: 1px;
    left: calc((-1) * 45 / 735 * 100vw);
  }

  .article-index-toggle {
    top: calc(46 / 735 * 100vw);
    right: calc(40 / 735 * 100vw);
    font-size: calc(18 / 735 * 100vw);
  }

  .accordion-arrow {
    width: calc(17 / 735 * 100vw);
    height: calc(8 / 735 * 100vw);
    margin: 0 5px;
  }

  .article-index-toggle>.pc {
    display: none;
  }

  .article-contents .article-meta img {
    display: inline-block;
    vertical-align: text-bottom;
    height: calc(20 / 735 * 100vw);
    width: calc(20 / 735 * 100vw);
    margin-right: 5px;
  }

  .article-contents h1 {
    font-size: calc(28 / 735 * 100vw);
    font-weight: 600;
    margin: calc(20 / 735 * 100vw) 0;
    color: #4B4B4B;
  }

  .article-contents h2 {
    font-size: calc(32 / 735 * 100vw);
    text-align: left;
    margin: calc(70 / 735 * 100vw) 0 0;
  }

  .article-contents h3 {
    margin: calc(60 / 735 * 100vw) 0 0;
    line-height: inherit;
    height: auto;
    padding-left: calc(22.5 / 735 * 100vw);
    border-left: 4px solid #7F212F;
    font-size: calc(28 / 735 * 100vw);
  }

  .article-contents h4 {
    margin: calc(60 / 735 * 100vw) 0 0;
    line-height: inherit;
    height: auto;
    border-bottom: 1px dashed #707070;
    font-size: calc(24 / 735 * 100vw);
  }

  .article-imgbox-caption {
    font-size: calc(16 / 735 * 100vw);
    text-align: center;
    height: calc(32 / 735 * 100vw);
    line-height: calc(32 / 735 * 100vw);
  }

  .article-box {
    display: flex;
    flex-direction: column;
    padding: calc(35 / 735 * 100vw) calc(50 / 735 * 100vw);
    margin-top: calc(40 / 735 * 100vw);
  }

  .article-box.bg-white {
    border: calc(4 / 735 * 100vw) solid #D8E8E7;
  }

  .article-box .article-box-title__gray {
    width: 80%;
    margin-left: 10%;
    margin-right: 10%;
    height: calc(60 / 735 * 100vw);
    font-size: calc(24 / 735 * 100vw);
    line-height: calc(60 / 735 * 100vw);
  }

  .article-box .article-box-title {
    font-size: calc(24 / 735 * 100vw);
    margin-bottom: calc(30 / 735 * 100vw);
  }

  .article-box p {
    margin-top: calc(20 / 735 * 100vw);
  }

  .article-box-img {
    width: 80%;
    margin-top: calc(20 / 735 * 100vw);
  }

  .article-box .checklist,
  .article-box .dotlist {
    margin-left: 20px;
  }

  .article-box .checklist li {
    line-height: calc(30 / 735 * 100vw);
    margin-bottom: calc(10 / 735 * 100vw);
  }

  .article-box .dotlist li {
    line-height: calc(30 / 735 * 100vw);
    margin-bottom: calc(10 / 735 * 100vw);
  }

  .article-box .checklist li::before {
    height: calc(20 / 735 * 100vw);
    width: calc(23 / 735 * 100vw);
    transform: translate(calc((-1) * (25 / 735 * 100vw)), calc(1 / 735 * 100vw));
  }

  .article-box .dotlist li::before {
    height: calc(14 / 735 * 100vw);
    width: calc(14 / 735 * 100vw);
    transform: translateX(calc((-1) * (30 / 735 * 100vw)));
  }

  .article-box ol li::before {
    margin-right: calc(20 / 735 * 100vw);
    height: calc(30 / 735 * 100vw);
    width: calc(30 / 735 * 100vw);
    transform: translateY(calc((-3) / 735 * 100vw));
    font-size: calc(12 / 735 * 100vw);
    line-height: calc(30 / 735 * 100vw);
  }

  .article-contents table th,
  .article-contents table td {
    font-size: calc(16 / 735 * 100vw);
    padding: calc(10 / 735 * 100vw);
    text-align: center;
  }

  .article-ecbanner {
    margin-top: calc(140 / 735 * 100vw);
  }

  .article-ecbanner span {
    display: block;
    margin-bottom: calc(25 / 735 * 100vw);
    font-size: calc(24 / 735 * 100vw);
    color: #E69979;
  }

  .article-ecbanner-linkbtn {
    min-width: calc(500 / 735 * 100vw);
    height: calc(70 / 735 * 100vw);
    border-radius: calc(60 / 735 * 100vw);
    background-color: #00526F;
    font-size: calc(16 / 735 * 100vw);
    line-height: calc(70 / 735 * 100vw);
  }

  .article-ecbanner-linkbtn::after {
    top: calc(28 / 735 * 100vw);
    right: calc(30 / 735 * 100vw);
    height: calc(16 / 735 * 100vw);
    width: calc(10 / 735 * 100vw);
  }

  .article-featured-header,
  .article-category-header {
    font-size: calc(32 / 735 * 100vw);
  }

  .article-featured-item {
    display: flex;
    justify-content: space-between;
  }

  .article-featured-item .article-featured-item-img {
    width: 100%;
    height: auto;
  }

  .article-featured-item p {
    margin-left: calc(20 / 735 * 100vw);
    font-size: calc(24 / 735 * 100vw);
    font-weight: 600;
    margin-top: 0;
  }

  .article-summarize-box {
    border: calc(20 / 735 * 100vw) solid #D8E8E7;
    font-size: calc(24 / 735 * 100vw);
    padding: calc(30 / 735 * 100vw) calc(35 / 735 * 100vw);
  }

  .sidebar {
    margin-top: calc(80 / 735 * 100vw);
    margin-left: 0;
    width: auto;
  }

  .article-category-list {
    padding: calc(40 /735 * 100vw) 0;
    font-size: calc(28 / 735 * 100vw);
    font-weight: 600;
  }

  .relative-articles {
    margin-top: calc(100 / 735 * 100vw);
    margin-bottom: calc(350 / 735 * 100vw);
  }

  .relative-articles-arrows {
    top: 0;
    right: calc(20 / 735 * 100vw);
  }

  .relative-articles-arrows .prev,
  .relative-articles-arrows .next {
    height: calc(12 / 390 * 100vw);
    width: calc(7.2 / 390 * 100vw);
  }

  .relative-articles-arrows .prev {
    margin-right: calc(21 / 735 * 100vw);
  }

  .relative-article-contents {
    margin-top: calc(80 / 735 * 100vw);
  }

  .relative-articles-bg {
    height: calc(350 / 735 * 100vw);
  }

  .relative-articles-items {
    margin-top: calc(70 / 735 * 100vw);
  }

  .relative-articles-item {
    margin-right: calc(25 / 735 * 100vw);
    min-width: calc(430 / 735 * 100vw);
    transition: transform 0.5s ease;
  }

  .relative-articles-header {
    margin-top: 0;
    font-size: calc(28 / 735 * 100vw);
  }
}


/* 文字装飾クラス */
.article-marker {
  position: relative;
  text-decoration-line: underline;
  text-decoration-color: #F6E27B;
  text-decoration-thickness: 8px;
  text-underline-offset: -0.3em;
  text-decoration-skip-ink: none;
  -webkit-text-decoration: underline #F6E27B 8px;
  -webkit-text-underline-offset: -0.3em;
  -webkit-text-decoration-skip-ink: none;
}

.article-bold {
  font-weight: 600;
}

.article-annotation {
  font-size: 14px;
}

.article-underline {
  text-decoration: underline;
}

@media screen and (max-width: 768px) {
  .article-annotation {
    font-size: calc(14 / 735 * 100vw);
  }
}

/* カラム数指定クラス */
.column-1 {
  flex-direction: column;
}

.column-2,
.column-3 {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
}

.column-2.column-reverse,
.column-3.column-reverse {
  flex-direction: row-reverse;
}

.column-2>* {
  width: 49% !important;
}

.column-3>* {
  width: 30% !important;
}

.column-2 .article-box,
.column-3 .article-box {
  padding: 30px;
}

.column-2 .article-box-img,
.column-3 .article-box-img {
  width: 100%;
  height: auto;
}

.column-2 .article-box .article-box-title__gray,
.column-3 .article-box .article-box-title__gray {
  width: 100%;
  margin-left: 0;
  margin-right: 0;
  font-size: 18px;
}

.column-2 .article-box p,
.column-3 .article-box p {
  font-size: 20px;
}

.column-border>* {
  border-right: 1px solid #F6F6F6;
}

.column-border>*:last-child {
  border-right: none;
}

@media screen and (min-width: 769px) {
  .column-1_pc {
    display: flex;
    flex-direction: column;
  }

  .column-2_pc,
  .column-3_pc {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .column-2_pc.column-reverse_pc,
  .column-3_pc.column-reverse_pc {
    flex-direction: row-reverse;
  }

  .column-2_pc>* {
    width: 49% !important;
  }

  .column-3_pc>* {
    width: 30% !important;
  }

  .article-contents .column-2_pc p,
  .article-contents .column-3_pc p {
    margin-top: 0;
  }

  .column-2_pc .article-box,
  .column-3_pc .article-box {
    padding: 30px;
  }

  .column-2_pc .article-box-img,
  .column-3_pc .article-box-img {
    width: 100%;
    height: auto;
    margin: 0;
  }

  .column-2_pc .article-box .article-box-title__gray,
  .column-3_pc .article-box .article-box-title__gray {
    width: 100%;
    margin-left: 0;
    margin-right: 0;
    font-size: 18px;
  }

  .column-2_pc .article-box p,
  .column-3_pc .article-box p {
    font-size: 20px;
  }
}

@media screen and (max-width: 768px) {

  .column-2_sp,
  .column-3_sp {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .column-2_sp>* {
    width: 49% !important;
  }

  .column-3_sp>* {
    width: 30% !important;
  }

  .column-2 .article-box .article-box-title__gray,
  .column-3 .article-box .article-box-title__gray {
    font-size: calc(18 / 735 * 100vw);
  }

  .column-2 .article-box,
  .column-3 .article-box,
  .column-2_sp .article-box,
  .column-3_sp .article-box {
    padding: calc(20 / 735 * 100vw);
  }

  .column-2 .article-box .article-box-title__gray,
  .column-3 .article-box .article-box-title__gray,
  .column-2_sp .article-box .article-box-title__gray,
  .column-3_sp .article-box .article-box-title__gray {
    font-size: calc(18 / 735 * 100vw);
  }

  .column-2 .article-box p,
  .column-3 .article-box p,
  .column-2_sp .article-box p,
  .column-3_sp .article-box p {
    font-size: calc(20 / 735 * 100vw);
  }

  .column-1_sp {
    display: flex;
    flex-direction: column;
  }

  .column-2_sp {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .column-3_sp {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
  }

}