body {
  font-family: 'Hiragino Sans', 'Meiryo', sans-serif;
  background-color: #FFEBE5;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  position: relative;
}
main {
  margin-top: 80px;
  padding: 20px;
  flex: 1;
}
.header_area {
  background-color: #FFEBE5;
  border-bottom: solid 1px rgba(89,86,82,.7);
  box-shadow: 0px 4px #FFF;
}
.header {
  text-align: center;
  margin-bottom: 20px;
}
.header h1 {
  color: #333;
  font-size: 2rem;
  margin: 20px auto 0;
  width: 200px;
  text-align: center;
}
.header p {
  color: #0078b7;
  font-size: 2.8rem;
  font-weight: bold;
  margin: 0;
}
.options-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  width: 100%;
  max-width: 800px;
}
.button-card {
  width: calc(50% - 27.5px);
  min-width: 250px;
  margin: 10px;
  cursor: pointer;
  transition: transform 0.2s;
  border-radius: 15px;
  overflow: hidden;
}
.button-card:hover {
  transform: translateY(-5px);
}
.button-card img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 15px;
}
.container-right {
  display: flex;
  flex-direction: column;
  width: calc(50% - 27.5px);
  margin: 10px;
  justify-content: space-between;
}
.right {
  width: 100%;
  margin: 0;
}
.l_moreFooterRwd {
  color: #888;
  background-color: #FFEBE5;
  border-top: solid 1px rgba(89,86,82,.7);
  box-shadow: 0px -4px #FFF;
  margin-top: 80px;
  margin-bottom: 30px;
  padding: 30px 0 20px;
  width: 100%;
  position: relative;
}
.l_moreFooterRwd_inner p {
  color: #888;
}

/* トップページに戻るリンクのスタイル */
.back-to-top-container {
  width: 100%;
  position: relative;
  margin-top: 60px;
  margin-bottom: 20px;
}
.back-to-top {
  position: absolute;
  right: 15%;
  color: #888;
  text-decoration: underline;
  font-size: 16px;
  transition: color 0.3s, text-decoration 0.3s;
}
.back-to-top:hover {
  color: #0078b7;
  text-decoration: none;
}


@media (max-width: 768px) {
  .header h1 {
    width: 150px;
  }
  .header p {
    font-size: 1.75rem;
  }
  .options-container {
    flex-direction: column-reverse;
    align-items: center;
    flex-wrap: nowrap;
  }
  .button-card {
    width: 85%;
    margin: 0 10px;
  }
  .container-right {
    width: 100%;
    align-items: center;
    gap: 15px;
  }
  .right {
    margin: 0 10px;
  }

  /* モバイル用のトップページに戻るリンク */
  .back-to-top {
    right: 20px;
    font-size: 14px;
  }
  .back-to-top-container {
    margin-top: 40px;
  }
}