.page_title {
  font-size: 100px;
  font-weight: bold;
  letter-spacing: 1px;
  padding: 100px 0 45px 0;
}

.search_box {
  height: 50px;
  display: flex;
  align-items: center;
  margin-bottom: 120px;
}
.search_input {
  width: 400px;
  height: 100%;
  border: none;
  background-color: #f8f8f8;
  text-indent: 20px;
}

.search_btn {
  user-select: none;
  position: relative;
  display: inline-flex;
  align-items: center;
  background-color: #272727;
  height: 50px;
  color: #fff;
  padding: 0 20px;
  border-radius: 0 5px 5px 0;
  cursor: pointer;
  transition: 0.3s ease;
  transform-origin: opacity transform;
}

.search_box.active .search_btn:hover {
  opacity: 0.9;
}
.search_box.active p,
.search_btn:hover p {
  opacity: 1;
  transform: translateX(0);
}
.search_box.active .search_ico,
.search_btn:hover .search_ico {
  opacity: 0;
  transform: translateX(50%);
}
.search_btn > p {
  position: absolute;
  width: 100%;
  left: 0;
  text-align: center;
  opacity: 0;
  transform: translateX(-50%);
  transition: 0.3s ease;
  transform-origin: opacity transform;
}
.search_ico {
  width: 24px;
  height: 24px;
  transition: 0.3s ease;
  transform-origin: opacity transform;
}

.blog_tag_part {
  border-bottom: solid #272727 1px;
  margin-bottom: 50px;
}
.blog_tag_list {
  display: flex;
  align-items: center;
  overflow: hidden;
  flex-wrap: wrap;
  text-overflow: ellipsis;
  overflow-x: auto;
  white-space: nowrap;
  padding-bottom: 15px;
  height: 60px;
}
.blog_tag_list.active{
  height: auto;
}
.blog_tag_item {
  white-space: nowrap;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 20px;
  margin-bottom: 10px;
  padding: 10px 20px;
  font-size: 18px;
  color: #666666;
  font-weight: 400;
  cursor: pointer;
  user-select: none;
}
.blog_tag_item.active > p {
  color: #000;
}
.blog_tag_item > svg {
  position: absolute;
}

/* blog_part */
.blog_part {
  display: flex;
  padding-bottom: 100px;
}
.blog_l {
  position: relative;
  width: 65%;
  margin-right: 130px;
}
.blog_r {
  position: sticky;
  top: 20px;
  width: 30%;
}

.blog_list {
  position: relative;
  overflow: hidden;
  min-height: 30vh;
}
.blog_item {
  animation: show_item 0.3s ease forwards;
}
@keyframes show_item {
  from {
    opacity: 0;
    transform: translate3d(0, 20%, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}
/* blog_item 在blog_item.css */

.blog_more_btn_m {
  display: none;
}

/* blog_r */
.r_title {
  padding-bottom: 30px;
  font-size: 20px;
  padding-top: 40px;
  font-weight: bold;
  letter-spacing: 2px;
}
.sub_blog {
  user-select: none;
  width: 100%;
  height: 50px;
  line-height: 50px;
  border: 1px solid #272727;
  text-align: center;
  font-size: 14px;
  cursor: pointer;
  margin-top: 10px;
  letter-spacing: 2px;
  transition: 0.3s ease;
  transform-origin: background-color transform;
}


.sub_blog:active{
  transform: scale(.95);
}

.sub_blog:hover {
  background-color: #272727;
  color: #fff;
}

.sub_blog:hover>.sub_box{
  opacity: 0;
}
.sub_blog:hover>.active_sub_box{
  opacity: 1;
}

.sub_box{
  width: 100%;
  text-align: center;
  position: absolute;
}

.active_sub_box{
  position: absolute;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
}

.active_sub_box>img{
  width: 20px;
  height: 20px;
  min-width: 20px;
  margin-right: 10px;
}


.near_blog_item {
  cursor: pointer;
  display: flex;
  align-items: center;
  padding-bottom: 20px;
}
.near_blog_item_left {
  width: 70px;
  height: 70px;
  min-width: 70px;
  overflow: hidden;
  margin-right: 20px;
}
.near_blog_item_left > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.near_blog_item_title,
.near_blog_item_date {
  font-size: 14px;
}
.near_blog_item_title {
  line-height: 20px;
  padding-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.hot_tag_list {
  display: flex;
  flex-wrap: wrap;
}
.hot_tag_item {
  padding: 10px 20px;
  border: 1px solid #E9E9E9;
  font-size: 12px;
  cursor: pointer;
  margin: 0 5px 5px 0;
  border-radius: 4px;
  transition: 0.3s ease;
  transform-origin: background-color;
}

.hot_tag_item:hover,
.hot_tag_item.active {
  background-color: #272727;
  color: #fff;
}

/* svg 路径动画 */
.checked_circle_svg {
  width: 100px;
  height: 100px;
}

.checked_circle {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: dash 2s ease alternate forwards;
}

@keyframes dash {
  from {
    stroke-dashoffset: 1000;
  }
  to {
    stroke-dashoffset: 0;
  }
}

/* mobile */
@media screen and (max-width: 767px) {
  #page-box {
    display: none;
  }
  .container {
    padding: 0 30px;
  }
  .search_box {
    justify-content: center;
    margin-bottom: 40px;
  }
  .page_title {
    padding: 40px 0 30px 0;
    font-size: 60px;
    /* text-align: center; */
    font-weight: bold;
    letter-spacing: 2px;
  }

  .search_input{
    font-size: 15px;
  }

  .blog_part{
    padding-bottom: 80px;
  }
  .blog_tag_part {
    margin-bottom: 30px;
  }
  .blog_tag_list {
    flex-wrap: nowrap;
    padding-left: 20px;
    padding-bottom: 5px;
  }
  .blog_tag_item {
    position: relative;
    font-size: 16px;
    padding: 10px 10px;
  }

  .blog_l {
    width: 100%;
    margin-right: 0;
  }
  .blog_more_btn_m {
    display: block;
    width: 100%;
    height: 36px;
    background-color: #eaeaea;
    color: #888888;
    line-height: 36px;
    text-align: center;
    margin-top: 20px;
    margin-bottom: 60px;
  }

  .blog_r {
    display: none;
  }
  .checked_circle_svg {
    width: 75px;
    height: 75px;
  }
}