.news_page_block {
  margin: 20px 0;
}
@media all and (max-width: 767px) {
  .news_page_block {
    margin: 0;
  }
}

ul.news_list li {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 40px;
  padding: 1.5em 0;
  border-top: solid 1px #eee;
  line-height: 1.5;
  font-size: 16px;
}
@media all and (max-width: 767px) {
  ul.news_list li {
    gap: 20px;
    padding: 1em 0;
  }
}
ul.news_list li span {
  white-space: nowrap;
  font-weight: 700;
  color: #222;
}
ul.news_list li a {
  color: #000;
  text-decoration: none;
}
ul.news_list li a:hover {
  color: #666;
  text-decoration: underline;
}

.layout {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  padding: 0 40px;
  max-width: 1180px;
  margin: 0 auto;
}
@media all and (max-width: 767px) {
  .layout {
    display: block;
    padding: 0 20px;
  }
}
.layout .layout_left {
  width: 70%;
  padding: 0px 50px 0px 0px;
}
@media all and (max-width: 767px) {
  .layout .layout_left {
    width: 100%;
    padding: 0;
  }
}
.layout .layout_right {
  width: 30%;
  padding: 50px 0 0;
}
@media all and (max-width: 767px) {
  .layout .layout_right {
    padding: 0 0 40px;
    width: 100%;
  }
}

.post_block {
  margin-top: 50px;
  padding-bottom: 20px;
  border-bottom: dashed 1px #ccc;
}
@media all and (max-width: 767px) {
  .post_block {
    margin-top: 30px;
    padding-bottom: 10px;
  }
}
.post_block .post_date {
  font-size: 16px;
  font-weight: 700;
  padding-bottom: 30px;
}
@media all and (max-width: 767px) {
  .post_block .post_date {
    padding-bottom: 15px;
  }
}
.post_block .post_title {
  font-size: 24px;
  font-weight: 400;
  -webkit-font-feature-settings: "palt";
          font-feature-settings: "palt";
  letter-spacing: 0.04em;
  line-height: 1.5;
  margin-bottom: 40px;
}
@media all and (max-width: 767px) {
  .post_block .post_title {
    font-size: 20px;
    margin-bottom: 20px;
  }
}
.post_block .post_body p {
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.04em;
  margin-bottom: 1.5em;
}
@media all and (max-width: 767px) {
  .post_block .post_body p {
    font-size: 15px;
    letter-spacing: 0.02em;
    margin-bottom: 1em;
  }
}
.post_block .post_body p + p {
  margin-top: 1.5em;
}
.post_block .post_body img {
  max-width: 100%;
  height: auto;
}

.side_box {
  position: sticky;
  top: 100px;
}
.side_box a {
  color: #000;
}
.side_box a:hover {
  color: #666;
}
.side_box h3 {
  font-size: 15px;
  font-weight: 500;
  color: #000;
  background-color: #f5f5f5;
  padding: 10px 15px;
  border-radius: 3px;
}
@media all and (max-width: 767px) {
  .side_box h3 {
    text-align: center;
  }
}
.side_box ul {
  padding: 10px 0 40px;
}
@media all and (max-width: 767px) {
  .side_box ul {
    padding: 5px 0 20px;
  }
}
.side_box li {
  font-size: 14px;
  line-height: 1.5;
  border-bottom: solid 1px #ddd;
  padding: 10px 0;
}
@media all and (max-width: 767px) {
  .side_box li {
    padding: 5px 0;
  }
}
.side_box .post-date {
  display: block;
  font-size: 12px;
  color: #777;
  padding-top: 4px;
}
.side_box .backnumber {
  padding-bottom: 100px;
}
@media all and (max-width: 767px) {
  .side_box .backnumber {
    padding-bottom: 40px;
  }
}
.side_box .backnumber dt.bknum {
  clear: both;
  margin: 0 0 5px 0;
  padding: 20px 0 0 0;
  font-size: 14px;
  line-height: 1.6;
  font-weight: normal;
  border-bottom: dotted 1px #aaa;
}
@media all and (max-width: 767px) {
  .side_box .backnumber dt.bknum {
    padding: 10px 0 0 0;
  }
}
.side_box .backnumber dd.bknum {
  display: block;
  float: left;
  margin: 0;
  padding: 0 5px 0 0;
  font-size: 14px;
  line-height: 1.6;
}

.pagination {
  padding-top: 50px;
  padding-bottom: 50px;
  text-align: center;
}
@media all and (max-width: 767px) {
  .pagination {
    padding-top: 25px;
  }
}
.pagination .pagination_inner {
  display: inline-block;
}
.pagination a.page-numbers {
  display: inline-block;
  width: 40px;
  height: 40px;
  border-radius: 3px;
  line-height: 40px;
  color: #222;
  background-color: #fff;
  border: solid 1px #222;
  text-decoration: none;
  -webkit-transition: 0.2s;
  transition: 0.2s;
}
@media all and (max-width: 767px) {
  .pagination a.page-numbers {
    width: 35px;
    height: 35px;
    line-height: 35px;
  }
}
.pagination a.page-numbers:hover {
  color: #fff;
  background-color: #222;
  border: solid 1px #222;
}
.pagination span.page-numbers.dots {
  display: inline-block;
  width: 20px;
  height: 30px;
  line-height: 30px;
}
.pagination span.current {
  display: inline-block;
  width: 40px;
  height: 40px;
  border-radius: 3px;
  line-height: 40px;
  color: #fff;
  background-color: #222;
  border: solid 1px #222;
}
@media all and (max-width: 767px) {
  .pagination span.current {
    width: 35px;
    height: 35px;
    line-height: 35px;
  }
}
.pagination span.arrow-next {
  display: inline-block;
  width: 16px;
  height: 16px;
}
.pagination span.arrow-back {
  display: inline-block;
  width: 16px;
  height: 16px;
}
.pagination .post_navigation {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  gap: 5px;
  font-size: 15px;
}
.pagination .post_navigation span {
  color: #aaa;
}
.pagination .back_list_btn a {
  display: inline-block;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  border: solid 1px #888;
  background-color: #fff;
  color: #000;
  padding: 10px 20px;
  -webkit-transition: 0.15s ease;
  transition: 0.15s ease;
}
.pagination .back_list_btn a:hover {
  background-color: #252525;
  border: solid 1px #000;
  color: #fff;
  background-size: 100% 100%;
}