.post_main {
  padding: 14rem 0 8rem;
}
.post_main .left {
  flex: 1;
  max-width: 100rem;
}
.post_main .metas {
  margin-bottom: 3.5rem;
}
.post_main .metas a {
  color: #888;
  transition: all 0.3s;
}
.post_main .metas a:hover {
  color: var(--primary);
}
.post_main h1 {
  font-size: 4.4rem;
  line-height: 5.6rem;
  font-weight: 800;
  letter-spacing: -0.8px;
  display: flex;
  justify-content: space-between;
}

.post_main .post_detail {
  margin-top: 3.5rem;
  padding-top: 3.5rem;
  border-top: 1px solid #e6e6e6;
  line-height: 3rem;
  color: #555;
}
.post_main .post_detail ol {
  padding-left: 4rem;
}
.post_main .post_detail ol li {
  list-style: decimal;
}
.post_main .post_detail ul {
  padding-left: 4rem;
}
.post_main .post_detail ul li {
  list-style: disc;
}
.post_main .post_detail img {
  max-width: 100%;
  height: auto;
}
.post_main .post_detail figcaption {
  font-style: italic;
}
.post_main .post_detail h2{
  margin-bottom: 1.5rem;
}
.post_main .post_detail p{
  margin-bottom: 1.5rem;
}
.post_main .post_detail a {
  color: var(--primary);
  text-decoration: underline;
}
.post_main .post_detail a.btn{
  color: white;
}
.post_main .post_detail a:hover {
  text-decoration: none;
}
.aligncenter{
  text-align: center;
}
.post_main .right {
  position: sticky;
  top: 17rem;
  width: max(23.571429%, 220px);
}
.post_main .title {
  font-weight: 700;
  font-size: 2.4rem;
}
.post_main .title::after {
  content: '';
  display: block;
  width: 6rem;
  height: 4px;
  margin-top: 2px;
  background-color: var(--primary);
}
.post_main .recent li + li a {
  border-top: 1px solid #dadada;
}
.post_main .recent a {
  display: block;
  padding: 1.8rem 0;
  font-size: 2rem;
  transition: all 0.3s;
  line-height: 3.4rem;
}
.post_main .recent a:hover {
  color: var(--primary);
}
.post_main .img {
  margin-top: 2rem;
}
.post_main .follow {
  margin-top: 6rem;
}
.post_main .follow ul {
  margin-top: 3rem;
  gap: 1rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
}
.post_main .follow a {
  display: block;
  overflow: hidden;
  text-indent: -999px;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  background-image: linear-gradient(-40deg, var(--primary), var(--secondary));
  position: relative;
}
.post_main .follow a:hover::before {
  opacity: 0;
}
.post_main .follow a:hover::after {
  filter: contrast(0) brightness(2);
}
.post_main .follow a::before {
  content: '';
  display: block;
  box-sizing: border-box;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  position: absolute;
  left: 0;
  top: 0;
  border: 1px solid #777;
  background-color: #fff;
  transition: all 0.3s;
}
.post_main .follow a::after {
  content: '';
  display: block;
  width: 50%;
  height: 50%;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  transition: all 0.3s;
  filter: contrast(0) brightness(1);
  background: no-repeat center / contain;
}
.post_main .follow .linkedin a::after {
  background-image: url(../img/social-linkedin.svg);
}
.post_main .follow .facebook a::after {
  background-image: url(../img/social-facebook.svg);
}
.post_main .follow .twitter a::after {
  background-image: url(../img/social-twitter.svg);
}
.post_main .follow .youtube a::after {
  background-image: url(../img/social-youtube.svg);
}
@media screen and (max-width: 768px) {
  .post_main {
    padding: 10rem 0 5rem;
  }
  .post_main .flex {
    display: block;
  }
  .post_main .metas {
    margin-bottom: 2rem;
  }
  .post_main h1 {
    font-size: 2rem;
    line-height: 3.7rem;
  }
  .post_main .post_detail {
    margin-top: 1.5rem;
  }
  .post_main .left {
    width: 100%;
  }
  .post_main .right {
    width: 100%;
    margin-top: 3rem;
  }
  .post_main .follow {
    margin-top: 2rem;
  }
}