:root {
  --fwel: 200;
  --fwl: 300;
  --fwn: 400;
  --fwm: 500;
  --fwsb: 600;
  --fwb: 700;
}

/* ===============================================================
 post aside
===============================================================*/
.post-aside {
  max-width: 40rem;
}
@media screen and (max-width: 450px) {
  .post-aside {
    width: 100%;
  }
}
.post-dl {
  padding: 4rem;
  width: 40rem;
  background-color: #f4f4f4;
  border-radius: 2rem;
  -webkit-border-radius: 2rem;
  border-width: 0;
}
@media screen and (max-width: 1250px) {
  .post-dl {
    width: 30rem;
  }
}
@media screen and (max-width: 834px) {
  .post-dl {
    padding: 2rem;
  }
}
@media screen and (max-width: 450px) {
  .post-dl {
    width: 100%;
    display: block;
  }
}
.post-dl:not(:first-of-type) {
  margin-top: 5rem;
}
@media screen and (max-width: 1100px) {
  .post-dl:not(:first-of-type) {
    margin-top: 3rem;
  }
}
@media screen and (max-width: 450px) {
  .post-dl:not(:first-of-type) {
    margin-top: 1.5rem;
  }
}
.post-dl__ttl {
  margin-bottom: 2rem;
  font-size: 2.4rem;
  font-weight: var(--fwm);
  line-height: 1.3;
}
@media screen and (max-width: 834px) {
  .post-dl__ttl {
    font-size: 1.8rem;
  }
}
@media screen and (max-width: 450px) {
  .post-dl__ttl {
    margin-bottom: 1rem;
  }
}
.post-dl__ttl.acc-btn {
  position: relative;
  padding-right: 0;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
  -ms-flex-pack: justify;
  justify-content: space-between;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
}
.post-dl.acc-list .post-dl__ttl {
  margin-bottom: 0;
}
.post-dl.acc-list .post-dd {
  opacity: 0;
  height: 0;
  display: none;
  pointer-events: none;
}
.post-dl.acc-list.open .post-dl__ttl {
  margin-bottom: 2rem;
}
@media screen and (max-width: 450px) {
  .post-dl.acc-list.open .post-dl__ttl {
    margin-bottom: 1rem;
  }
}
.post-dl.acc-list.open .post-dd {
  opacity: 1;
  height: auto;
  display: block;
  pointer-events: all;
}
.post-dl.acc-list.open .post-arw::before {
  transform: rotate(0deg);
}
.post-dl .post-tag {
  font-size: 1.4rem;
}
.post-arw {
  position: relative;
  display: block;
  width: 3rem;
  aspect-ratio: 1;
  background-color: #45b035;
  border-radius: 100vmax;
  -webkit-border-radius: 100vmax;
}
.post-arw::before {
  position: absolute;
  content: "\e698";
  width: 3rem;
  aspect-ratio: 1;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
  -ms-flex-pack: center;
  justify-content: center;
  -webkit-box-align: center;
  -ms-flex-align: center;
  align-items: center;
  color: #fff;
  font-size: 2rem;
  font-family: "Material Symbols Outlined";
  transition: all 0.5s ease;
  transform: rotate(180deg);
}
.post-dd {
  padding-top: 2rem;
  font-size: 1.7rem;
  line-height: 2.1;
  border-top: 1px solid #ddd;
}
@media screen and (max-width: 450px) {
  .post-dd {
    padding-top: 1rem;
    font-size: 1.4rem;
  }
}
.post-dd.acc-list {
  transition: all 0.5s ease;
}
.post-dd.--tag {
  font-size: 1.2rem;
  line-height: 1;
}
.post-dd__list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-flex-wrap: wrap;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  gap: 0.5rem;
}