@charset "UTF-8";

.flex-layout {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

/*-------------------------------------------
メイン
-------------------------------------------*/
#maincontent {
  width: 78%;
  padding-top: 55px;
}

/*-------------------------------------------
サイドバー
-------------------------------------------*/
#sidebar {
  width: 22%;
  height: 100vh;
  max-width: 350px;
  min-width: 225px;
  background-color: #f4f2ec;
  padding: 40px 20px 80px;
  position: sticky;
  top: 85px;
}
#sidebar .inner {
  max-width: 190px;
  margin: 0 auto;
}
#sidebar .side-title {
  font-size: 18px;
  margin: 40px 0 10px;
}
#sidebar .item-list li {
  font-size: 15px;
  letter-spacing: -0.05em;
  margin-bottom: 10px;
}
#sidebar .item-list li a {
  background-color: #fff;
  display: block;
  padding: 4px 0;
  text-align: center;
}
#sidebar .item-list li a:hover {
  background-color: #dfc9cf;
  opacity: 1;
}
#sidebar .item-list li.active a {
  background-color: #dfc9cf;
}

/*-------------------------------------------
メイン
-------------------------------------------*/
.topics {
  max-width: 1050px;
  padding: 0 40px;
  margin: 0 auto 60px;
}
.topics .topics-list {
  grid-template-columns: repeat(2, 1fr);
  gap: 50px 5%;
}

/*-------------------------------------------
SP
-------------------------------------------*/
@media screen and (max-width: 767px) {
  .flex-layout {
    flex-direction: column;
  }

  /*-------------------------------------------
  ドロップダウンメニュー
  -------------------------------------------*/
  #topics-search {
    width: calc(100% - 80px);
    border: solid 1px #703018;
    color: #703018;
    cursor: pointer;
    padding: 10px 0;
    margin: 0 auto 40px;
    text-align: center;
    position: relative;
  }
  #topics-search .icon {
    width: 30px;
    position: absolute;
    top: 7px;
    left: 10px;
  }

  /*-------------------------------------------
  メイン
  -------------------------------------------*/
  #maincontent {
    width: 100%;
    padding-top: 30px;
  }
  #maincontent .main-title {
    margin-bottom: 30px;
  }

  /*-------------------------------------------
  サイドバー
  -------------------------------------------*/
  #sidebar {
    width: 100%;
    max-width: 100%;
    padding: 20px 20px 40px;
    margin: 0 auto;
    display: none;
    animation-name: fadeIn;
    animation-fill-mode: forwards;
    animation-duration: 1s;
    position: static;
  }
  @keyframes fadeIn{
    0% {
      opacity: 0;
    }

    100% {
      opacity: 1;
    }
  }
  #sidebar.active {
    display: block;
  }
  #sidebar .inner {
    width: 80%;
    max-width: 100%;
  }
  #sidebar .side-title {
    text-align: center;
  }
  #sidebar .sidebar-close .icon{
    width: 35px;
    margin: 0 0 -15px auto;
  }

  /*-------------------------------------------
  トピックス
  -------------------------------------------*/
  .topics {
    margin: 0 auto 40px;
  }
  .topics .topics-list {
    grid-template-columns: repeat(1, 1fr);
    gap: 20px;
  }
}