*{
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-weight: normal;
}
body {
  font-family: sans-serif;
  line-height: 1.6;
  color: #1d1d1d;
  position: relative;
  overflow-y: scroll;
  display: flex;
  flex-direction: column;
  min-height: 100vh; /* ←画面の高さを確保 */
}
li{
  list-style: none;
}
.bg-blur{
  background-image: url(img/wp-bg.jpg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
  position: fixed;
  width: 100vw;
  height: 100vh;
  inset: 0;
  z-index: -1;
  filter: blur(3px);
  transform: scale(1.05);
}
header,main,footer{
  text-align: center;
}
header{
  width: 100%;
  padding: 30px;
  background-color:rgba(0, 0, 0, 0.1);
}
header a{
  color:#707070;
  font-size: 20px;
  letter-spacing: 0.2em;
}
main{
  flex: 1;
}
h1{
  color:#45708D;
  font-size: 32px;
  letter-spacing: 0.2em;
  margin-bottom: 60px;
}
.news-list,
.news-detail{
  width: 800px;
  padding: 60px;
  margin: 100px auto 0;
  display: inline-block;
  background-color:rgba(255, 255, 255, 0.9);
}
a{
  text-decoration: none;
}

/* index */
.news-list li{
  border-top: 1px solid #bcbcbc;
}
.news-list li:last-child{
  border-bottom: 1px solid #bcbcbc;
}

.news-list time {
  font-weight: normal;
  margin-right: 0.5em;
}
.news-list li a{
  padding-top: 20px;
  padding-bottom: 20px;
  font-weight: bold;
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 30px;
  text-align: left;
  color: #1d1d1d;
}
.news-list li a:hover{
  opacity: .5;
}

/* detail */
.news-detail h1{
  margin-bottom: 0;
  font-weight: bold;
  letter-spacing: unset;
  font-size: 24px;
}
.news-detail{
  margin-top: 100px;
}
.news-detail h2 {
  margin-bottom: 0.2em;
}
.news-detail p{
  text-align: left;
}
.news-detail p + p{
  margin-top: 20px;
}
.title-area{
    margin-top: 0;
    margin-bottom: 40px;
}
.title-area time{
    margin-top: 20px;
    display: inline-block;
}
.backBtn a{
  margin-top: 60px;
  display: inline-block;
  background-color: #280900;
  color: #fff;
  padding: 15px 50px;
  border-radius: 100vmax;
  position: relative;
}
.backBtn a:before{
  content: "←";
  display: inline-block;
  margin: auto;
  left: 10px;
  font-size: 1em;
  pointer-events: none;
  position: absolute;
  transition: background-color 0.3s ease;
}
.backBtn a:hover{
  color:#154260;
  background-color: #F5EFE2;
  transition: background-color 0.3s ease;
}
footer{
  width: 100%;
  padding: 30px;
  position: fixed;
  bottom: 0;
  left: 0;
  background-color: #45708D;
  color: #fff;
}

@media screen and (max-width: 750px) {
  main{
    padding: 0 10px;
  }
  header{
    padding: 15px;
  }
  header a{
    font-size: 15px;
  }
  .news-list{
    width: 100%;
    padding: 15px;
    margin-top: 10svh;
    margin-bottom: 20svh;
    padding: 7svh 15px;
  }
  h1 {
      margin-bottom: 5svh;
  }

  /* index */
  .news-list li a {
      padding-top: 10px;
      padding-bottom: 10px;
      grid-template-columns: unset;
      grid-template-rows: 1fr auto;
      gap: 0;
      font-size: 14px;
  }
  .news-list time {
      margin-right: 0;
  }

  /* detail */
  .news-detail h1 {
    font-size: 22px;
  }
  .news-detail p + p{
    margin-top: 10px;
  }
  .news-detail p{
    font-size: 15px;
  }
  .news-detail {
    width: 100%;
    padding: 15px;
    margin-top: 10svh;
    margin-bottom: 0;
    padding: 7svh 15px;
  }
  .backBtn a {
    font-size: 15px;
    margin-top: 5svh;
    padding: 10px 50px;
  }
  footer{
    width: 100%;
    padding: 15px;
    position: static;
    margin-top: 10svh;
  }
  footer p{
    font-size: 14px;
  }

}