.main_visual_area {
  margin-bottom: 50px;
  margin-top: 50px;
  padding-bottom: 50px;
  width: 100%;
  height: 100vh;
  background-image: url("../../images/mv.png");
  background-repeat: repeat-x;
  background-size: cover;
  background-position: 0 0;
  animation-name: slide_img;
  animation-duration: 200s;
  animation-iteration-count: infinite;
  animation-timing-function: linear;
}

@keyframes slide_img {
  100% {
    background-position: 10000px 0;
  }
}

.mv_img {
  width: 100%;
}

.main_visual {
  position: absolute;
  transform: translateX(-50%);
  top: 20%;
  left: 50%;
  width: 100%;
}

.main_visual h1 {
  text-align: center;
  font-size: 70px;
}

.mv_animal {
  display: flex;
  justify-content: center;
  padding-top: 200px;
}

.mv_animal img {
  width: 20%;
}

.title_h2 {
  font-size: 75px;
  text-align: center;
}

.mb_100 {
  margin-bottom: 100px;
}

.home_contents {
  padding-top: 50px;
}

.home_inner {
  background-color: #e5e5e6;
  padding: 150px 0;
  text-align: center;
}

.home_inner_contents {
  max-width: 900px;
  margin: 0 auto;
}

.inner_logo {
  margin-bottom: 20px;
}

.inner_logo img {
  width: 400px;
}

.home_inner h4 {
  font-size: 45px;
  font-weight: bold;
  margin-bottom: 10px;
  font-family: 'Source Sans 3', sans-serif;
}

.home_inner h3 {
  font-size: 70px;
  font-weight: bold;
  margin-bottom: 20px;
  font-family: 'Source Sans 3', sans-serif;
}

.home_inner p {
  text-align: left;
  font-size: 25px;
  font-weight: bolder;
  width: 100%;
  margin: 0 auto 45px;
  line-height: 2;
}

.home_inner a {
  font-weight: bold;
  font-size: 35px;
  font-family: 'Source Sans 3', sans-serif;
}

.home_inner a::after {
  content: "▶";
  font-size: 30px;
  margin-left: 5px;
}

.home_article_area {
  margin: 30px auto 0;
  padding-top: 80px;
}

.home_article_area:last-child {
  margin: 0 auto 100px;
}

.contents_title {
  text-align: center;
  font-size: 80px;
  font-weight: bold;
  margin-bottom: 50px;
  font-family: 'Source Sans 3', sans-serif;
}

.article_index {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 60px;
}

.article_link {
  display: block;
  width: calc(33.333% - 60px);
}

.article_item {
  width: 100%;
}

.article_item:nth-child(-n + 3) {
  margin-bottom: 50px;
}

.article_item img {
  width: 100%;
  margin-bottom: 15px;
  aspect-ratio: 360 / 265;
  height: auto;
  max-width: 380px;
}

.article_info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
}

.article_date {
  font-weight: bold;
  font-size: 20px;
}

.article_genre {
  border: 1px solid #1e2023;
  padding: 5px;
  border-radius: 20px;
  width: 65%;
  text-align: center;
  font-size: 16px;
}

.article_title {
  font-size: 35px;
  font-weight: bold;
}

.contents_p {
  font-size: 25px;
}

.gunre_list {
  margin: 50px auto;
  padding: 0 50px;
}

.gunle_item_group {
  display: flex;
  align-items: center;
  margin-top: 20px;
  margin-bottom: 20px;
  text-align: center;
}

.gunle_item_group:nth-child(1),
.gunle_item_group:nth-child(3) {
  justify-content: space-between;
}

.gunle_item_group:nth-child(2) {
  justify-content: center;
  gap: 5%;
}

.gunre_item {
  width: 30%;
  border: 2px solid #1e2023;
  padding: 10px;
  border-radius: 35px;
  position: relative;
  font-size: 30px;
}

.gunre_item::after {
  content: "＞";
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  font-weight: bold;
  color: #1e2023;
}

.home_instagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 50px;
}

.insta_account {
  width: 30%;
}

.insta_item {
  font-size: 25px;
  margin-bottom: 50px;
  font-weight: bold;
  font-family: 'Source Sans 3', sans-serif;
}

.insta_item a {
  vertical-align: middle;
}

.insta_item a span {
  font-size: 20px;
  margin-left: 20px;
}

.insta_icon {
  width: 35px;
  margin-right: 10px;
}

@media (max-width: 1024px) {
  .main_visual {
    top: 20%;
  }

  .mv_animal {
    padding-top: 300px;
  }
  
  .mv_animal img {
    width: 45%;
  }
}

/* タブレット用スタイル（768px-1023px） */
@media (min-width: 768px) and (max-width: 1023px) {
  .main_visual_area {
    height: 60vh;
    margin-top: 30px;
  }

  .main_visual {
    top: 15%;
  }

  .main_visual h1 {
    font-size: 45px;
  }

  .mv_animal {
    padding-top: 150px;
  }

  .mv_animal img {
    width: 35%;
  }

  .title_h2 {
    font-size: 55px;
  }

  .home_inner {
    padding: 100px 0;
  }

  .home_inner h4 {
    font-size: 35px;
  }

  .home_inner h3 {
    font-size: 65px;
  }

  .home_inner p {
    font-size: 20px;
    margin-bottom: 35px;
  }

  .home_inner a {
    font-size: 20px;
  }

  .contents_title {
    font-size: 65px;
    margin-bottom: 40px;
  }

  .article_link {
    width: calc(50% - 15px);
  }

  .article_item img {
    margin-bottom: 12px;
  }

  .article_info {
    margin-bottom: 12px;
  }

  .article_date {
    font-size: 20px;
  }

  .article_genre {
    font-size: 16px;
    width: 60%;
  }

  .article_title {
    font-size: 26px;
  }

  .contents_p {
    font-size: 20px;
  }

  .gunre_list {
    padding: 0 30px;
  }

  .gunre_item {
    font-size: 20px;
    padding: 8px;
  }

  .gunre_item::after {
    font-size: 16px;
    right: 10px;
  }

  .home_instagram {
    gap: 35px;
  }

  .insta_account {
    width: 35%;
  }

  .insta_item {
    font-size: 24px;
    margin-bottom: 40px;
  }

  .insta_icon {
    width: 30px;
  }
}

@media (max-width: 767px) {
  .home_contents {
    padding-top: 80px;
  }

  .setion_title {
    margin-top: 20px;
  }
  
  .main_visual_area {
    height: 50vh;
    margin-top: 0;
  }

  .main_visual h1 {
    font-size: 27px;
  }

  .scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px; /* テキストと矢印の間隔 */
    margin-bottom: 100px;
  }

  /* 縦向きのテキスト */
  .scroll-text {
    font-size: 14px;
    font-weight: bold;
    writing-mode: vertical-rl; /* テキストを縦書きに */
    text-orientation: mixed;
  }

  .arrow {
    position: relative;
    display: inline-block;
    width: 2px;
    height: 100px;
    border-radius: 9999px;
    background-color: #000000;
  }
  
  .arrow::before {
    content: "";
    position: absolute;
    bottom: 0;
    left: calc(50% - 1px);
    width: 2px;
    height: 10px;
    border-radius: 9999px;
    background-color: #000000;
    transform: rotate(45deg);
    transform-origin: 50% calc(100% - 1px);
  }

  .mv_animal {
    margin-top: 30px;
    padding-top: 50px;
  }

  .mv_animal img {
    width: 45%;
  }

  .mv_animal img:first-child {
    margin-right: -40px;
  }

  .title_h2 {
    font-size: 27px;
  }

  .home_inner {
    padding-top: 50px;
    padding-bottom: 50px;
  }

  .home_inner h4 {
    font-size: 14px;
    margin-bottom: 5px;
  }

  .home_inner h3 {
    font-size: 27px;
  }

  .home_inner p {
    width: 80%;
    margin: 0 auto 15px;
    font-size: 13px;
  }

  .home_inner a {
    font-size: 14px;
  }

  .home_inner a::after {
    font-size: 10px;
  }

  .home_article_area {
    padding-top: 50px;
    width: 92.3%;
  }

  .inner_logo {
    margin-bottom: 0;
  }

  .inner_logo img {
    width: 35%;
  }

  .contents_title {
    font-size: 27px;
    margin-bottom: 30px;
  }

  .article_index {
    gap: 30px;
  }

  .article_link {
    width: calc(50% - 15px);
  }

  .article_item {
    margin-bottom: 0 !important;
  }

  .article_title {
    font-size: 16px;
  }

  .contents_p {
    font-size: 14px;
  }

  .article_item img {
    margin-bottom: 10px;
  }

  .article_info {
    margin-bottom: 10px;
  }

  .article_date,
  .article_genre {
    font-size: 11px;
  }

  .article_genre {
    width: 55%;
  }

  .article_text {
    font-size: 14px;
  }

  .gunre_list {
    padding: 0;
    gap: 20px;
  }

  .gunle_item_group {
    gap: 10px;
  }

  .gunre_item {
    font-size: 12px;
    width: 33%;
    padding: 5px;
  }

  .gunre_item::after {
    font-size: 12px;
    right: 3px;
  }

  .home_instagram {
    gap: 0;
  }
  
  .insta_account {
    width: 55%;
  }

  .insta_icon {
    width: 15px;
    margin-right: 7px;
  }

  .insta_item {
    font-size: 12px;
    margin-bottom: 30px;
  }

  .insta_item.en a {
    line-height: 0.8;
    font-size: 16px;
  }

  .insta_item a span {
    font-size: 16px;
    margin-left: 0;
  }

  .home_article_area:last-child {
    margin-bottom: 50px;
  }
}

@media (max-width: 399px) {
  .home_contents {
    padding-top: 80px;
  }
}