.breadcrumb {
  display: flex;
  line-height: 1.2;
}
  @media screen and (max-width: 576px) {
  .breadcrumb {
    font-size: 12px;
  }
}
  .breadcrumb-slash {
    padding: 0 4px;
  }
  .breadcrumb-item > a {
      color: #232323;
    }
  .breadcrumb-item.is-active > a {
        color: var(--main-color);
      }

.intro-container {
    max-width: 1040px;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
  }

@media screen and (max-width: 576px) {
  .intro-container {
      padding: 0 15px;
  }
}

.intro-content {
    display: flex;
    margin: 24px 0 140px;
  }

.intro-nav {
    margin: 150px 0 0;
  }

.intro-nav > * + * {
      margin: 44px 0 0;
    }

.intro-nav-item {
      position: relative;
      display: flex;
      align-items: center;
      padding: 0 0 0 12px;
    }

.intro-nav-item.is-active:before {
          content: '';
          width: 3px;
          position: absolute;
          left: 0;
          top: 0;
          bottom: 0;
          margin: auto;
          height: 20px;
          background: var(--primary-light);
        }

.intro-nav-item.is-active > h2 > a {
          color: #915499;
        }

.intro-nav-item.is-active > svg {
          fill: #915499;
        }

.intro-nav-item > h2 > a {
        color: var(--main-color);
        margin: 0 0 0 12px;
      }

.intro-nav-item > * {
        vertical-align: middle;
      }

.intro-article-content {
      margin: 40px 0 0;
    }

.intro-article-content > p {
        margin-bottom: 30px;
        color: #232323;
        font-size: 18px;
        line-height: 1.8;
      }

@media screen and (max-width: 576px) {
  .intro-article-content > p {
          font-size: 16px;
          line-height: 1.6;
  }
}

.intro-article-content > p > a {
          color: #915499;
          text-decoration: underline;
        }

.intro-article-content > :last-child {
        margin: 0;
      }

.intro-article-content > h2 {
        color: #232323;
        font-size: 24px;
        font-weight: 700;
        line-height: 1.5;
        margin: 8px 0;
      }

@media screen and (max-width: 576px) {
  .intro-article-content > h2 {
          font-size: 20px;
  }
}

.intro-article-content > ul {
        line-height: 1.6;
      }

.intro-article-content > .warn {
        background: #E54545;
        display: inline-block;
        line-height: 1.5;
        padding: 4px 10px;
        color: #fff;
        margin: 0 0 10px;
      }

.intro-article-title {
      color: var(--main-color);
      font-size: 36px;
      font-weight: bold;
      margin: 0 0 40px 0;
      line-height: 1.2;
    }

@media screen and (max-width: 576px) {
  .intro-article-title {
        font-size: 20px;
        margin: 0 0 20px 0;
  }
}

.left-side {
  flex: 0 0 200px;
  width: 200px;
  margin: 0 130px 0 0;
}

@media screen and (max-width: 992px) {
  .left-side {
    display: none;
  }
}