.blog-article__body__index__wrap {
  margin-top] 56px;
  margin-bottom: 45px;
}
@media screen and (min-width: 768px) {
  .blog-article__body__index__wrap {
    margin-top: 74px;
    margin-bottom: 60px;
  }
}

.blog-article__body__index__title__button {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
}

.blog-article__body__index__title__button__text {
  display: block;
  position: absolute;
  top: calc(50% + 1px);
  right: 60px;
  transform: translateY(-50%);
  width: 80px;
  font-size: 1.3rem;
  line-height: 1.5;
  letter-spacing: .15em;
  text-align: right;
  white-space: nowrap;
}
@media screen and (min-width: 768px) {
  .blog-article__body__index__title__button__text {
    top: 50%;
    font-size: 1.4rem;
  }
}
.blog-article__body__index__title__button__icon {
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  background-color: transparent;
  border: 1px solid var(--color-pale);
  box-sizing: border-box;
  cursor: pointer;
  transition: border-color .3s, background-color .3s;
}
@media screen and (min-width: 1050px) {
  .blog-article__body__index__title__button__icon {
    width: 25px;
    height: 25px;
  }
}

.blog-article__body__index__title__button__icon:after,
.blog-article__body__index__title__button__icon:before {
  background-color: var(--color-point);
  content: "";
  height: 1px;
  position: absolute;
  right: calc(50% - 5px);
  top: calc(50% - 1px);
  transition: background-color .3s, transform .3s;
  width: 10px;
  transform: rotate(180deg);
}
.blog-article__body__index__title__button__icon.is-active:before {
  transform: rotate(90deg);
}

.blog-article__body__index__title__button__icon:is(:hover,:focus) {
  background-color: var(--color-point);
  border-color: var(--color-point);
}
.blog-article__body__index__title__button__icon:is(:hover,:focus)::before,
.blog-article__body__index__title__button__icon:is(:hover,:focus)::after {
  background-color: #ffffff;
}

.blog-article__body__index {
  position: relative;
  z-index: 0;
  border-left: 1px solid var(--color-pale);
  border-right: 1px solid var(--color-pale);
  border-bottom: 1px solid var(--color-pale);
  padding: 15px 20px 13px;
}
@media screen and (min-width: 768px) {
  .blog-article__body__index {
    padding: 25px 40px 24px;
  }
}

.blog-article__body__index__title {
  display: flex;
  align-items: center;
  position: relative;
  z-index: 1;
  box-sizing: border-box;
  width: 100%;
  height: 50px;
  padding: 7px 20px 6px;
  border-top: 2px solid var(--color-point);
  background-color: var(--color-bg);
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: var(--fw-bold-en);
  letter-spacing: var(--ls-root-en);
  text-align: left;
}
@media screen and (min-width: 768px) {
  .blog-article__body__index__title {
    height: 55px;
    padding: 9px 20px 8px;
    font-size: 1.6rem;
  }
}

.blog-article__body__index__body__list {
  counter-reset: number 0;
}

.blog-article__body__index__body__list__item {
  padding-left: 2.3em;
  letter-spacing: var(--ls-root);
  line-height: 2;
  color: var(--color-plane);
}
.blog-article__body__index__body > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item {
  padding-top: 10px;
  padding-bottom: 12px;
  border-bottom: 1px dotted var(--color-pale);
  font-size: 1.5rem;
  text-indent: -2.3em;
}
.blog-article__body__index__body__list__item:last-child {
  border-bottom: none !important;
}
.blog-article__body__index__body > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item {
  margin-top: 8px;
  padding-left: 10px;
  text-indent: -1.1em;
  font-size: 1.2rem;
  line-height: 1.3;
}

.blog-article__body__index__body__list__item:first-of-type {
  margin-top: 0;
}
@media screen and (min-width: 768px) {
  .blog-article__body__index__body > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item {
    padding-bottom: 14px;
    font-size: 1.6rem;
  }
  .blog-article__body__index__body > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item {
    font-size: 1.3rem;
  }
}

.blog-article__body__index__body > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item > a::before {
  content: counter(number, decimal-leading-zero) "：";
  counter-increment: number 1;
  font-family: var(--font-en);
  font-size: 1.3rem;
  transition: color .3s;
}

.blog-article__body__index__body__list__item a {
  display: block;
  font-weight: 500;
}
.blog-article__body__index__body > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item > a span {
  text-decoration: underline var(--color-point);
  text-underline-offset: .3em;
}
.blog-article__body__index__body > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item a {
  position: relative;
}
.blog-article__body__index__body > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item > .blog-article__body__index__body__list > .blog-article__body__index__body__list__item a::before {
  content: "・";
  transition: color .3s;
}
@media screen and (min-width: 1050px) {
  .blog-article__body__index__body__list__item a {
    transition: color .3s;
  }
  .blog-article__body__index__body__list__item a:is(:hover, :focus) {
    color: var(--color-point);
  }
}