* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  font-size: 100%;
  font-family: "Shippori Mincho", serif;
  font-weight: 400;
  font-style: normal;
  background-color: black;
  z-index: -1;
  color: #fff;
  letter-spacing: 2px;
}
/*共通css*/
h1 {
  text-align: center;
  font-size: 2rem;
  font-weight: 600;
  margin: 40px 0;
}
.in-h1 {
  text-align: center;
  font-size: 2rem;
  font-weight: 600;
  margin: 10px 0;
}
.fab {
  font-family: "Font Awesome 5 Brands";
  -moz-osx-font-smoothing: grayscale;
  -webkit-font-smoothing: antialiased;
  display: inline-block;
  font-style: normal;
  font-variant: normal;
  text-rendering: auto;
  line-height: 1;
}
/*ロゴ*/
.logo-img {
  width: 200px;
  height: 200px;
  margin: 0 auto;
}
.logo-img img {
  width: 100%;
}
/*ヘッダーメニュー*/
#fixed-menu {
  display: flex;
  top: 40px;
  right: 20px;
  z-index: 3;
  letter-spacing: 2px;
  padding: 8px 15px;
  position: fixed;
  border: 3px groove #fff;
  border-radius: 9999px;
  background-color: rgba(0, 0, 0, 0.21);
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.15);
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(calc(var(--s-val) * 0.4));
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
}

/* 表示時のスタイル */
#fixed-menu.visible {
  opacity: 1;
}

ul {
  padding: 10px 20px;
}
/*mv*/

#mv,
#SYSTEM {
  position: relative;
  width: 100%;
  height: auto;
  overflow: hidden;
}

.mv-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.SYSTEM-img img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

#mv::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}
#SYSTEM::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}
#mv .mv-text {
  position: absolute;
  width: 100%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 1.5rem;
  letter-spacing: 2px;
  line-height: 1.5;
  font-weight: bold;
  text-align: center;
  z-index: 2;
}
#SYSTEM .SYSTEM-text {
  position: absolute;
  width: 100%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: #fff;
  font-size: 1.5rem;
  letter-spacing: 2px;
  line-height: 1.5;
  font-weight: bold;
  text-align: center;

  padding: 30px 60px;
  z-index: 2;
}

#SYSTEM .SYSTEM-text::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #666565;
  opacity: 0.7;
  z-index: -1;
}
#concept {
  width: 100%;
}
#concept p {
  width: 90%;
  margin: 30px auto;
  text-align: center;
  font-size: 1.2rem;
  line-height: 1.8;
}
/*スライドショー*/

.slideshow-container {
  width: 100%;
  height: 500px;
  margin: 50px 0;
  overflow: hidden;
  position: relative;
  z-index: -1;
}

.slide {
  width: 100%;
  position: absolute;
  transition: opacity 1.5s ease-in-out;
}
.slide img {
  object-fit: cover;
  background-size: cover;
  height: 500px;
}
.fade {
  animation: fadeEffect 2s ease-in-out;
}

@keyframes fadeEffect {
  from {
    opacity: 0.4;
  }
  to {
    opacity: 1;
  }
}

/*SNS*/
#SNS {
  width: 90%;
  margin: 0 auto;
}
.sns-twitter {
  width: 300px;
  margin: 30px auto;
  font-size: 25px;
  font-weight: bold;
  height: 90px;
  border: none;
  border-radius: 100px;
  background-image: linear-gradient(to right, #675c60 0%, #515677 100%);
  box-shadow: 0 5px rgb(134, 149, 190);
  display: flex;
  justify-content: center;
  align-items: center;
}
.sns-instagram {
  width: 300px;
  margin: 30px auto;
  font-size: 25px;
  font-weight: bold;
  height: 90px;
  border: none;
  border-radius: 100px;
  background-image: linear-gradient(to right, #ed6ea0 0%, #e38461 100%);
  box-shadow: 0 5px rgb(156, 7, 69);
  display: flex;
  justify-content: center;
  align-items: center;
}
.instagram:before {
  content: "\f16d";
}
.twitter:before {
  content: "\f099";
}
.sns-instagram a {
  gap: 10px;
  color: white;
}
.sns-instagram:hover {
  transform: scaleX(1.1); /* 横方向に1.1倍の拡大を適用 */
  transition: transform 0.3s ease-in-out; /* アニメーションのスムーズさを設定 */
}

.sns-twitter:hover {
  transform: scaleX(1.1); /* 横方向に1.1倍の拡大を適用 */
  transition: transform 0.3s ease-in-out; /* アニメーションのスムーズさを設定 */
}

/*アクセス*/
#ACCESS {
  width: 90%;
  margin: 0 auto;
}
.ACCESS-text {
  line-height: 1.5;
  text-align: center;
  margin: 20px 0;
}
.map {
  text-align: center;
}
.map iframe {
  width: 70%;
  height: 280px;
}
/*フッター*/
#footer {
  text-align: center;
  margin: 30px auto;
}
@media (min-width: 344px) and (max-width: 480px) {
  h1 {
    font-size: 1.8rem;
  }
  .in-h1 {
    font-size: 1.8rem;
  }
  #fixed-menu {
    top: 25px;
    right: 15px;
    font-size: 0.7rem;
    padding: 3px 8px;
  }

  .sns-twitter,
  .sns-instagram {
    height: 60px;
  }
  .logo-img {
    width: 170px;
    height: 170px;
  }
  #mv .mv-text {
    font-size: 1rem;
  }

  #concept p {
    margin: 30px auto;
    font-size: 0.9rem;
    line-height: 1.6;
  }
  #SYSTEM .SYSTEM-text {
    font-size: 1.1rem;
  }
  .ACCESS-text {
    font-size: 0.8rem;
    line-height: 1.6;
  }
  .copyright p {
    font-size: 0.7rem;
  }
}
@media (min-width: 481px) and (max-width: 820px) {
  /* .sns-instagram {
    width: 100%;
    height: 380px;
    border-radius: 10px;
  } */
}
@media (min-width: 821px) and (max-width: 2500px) {
  h1 {
    font-size: 3rem;
  }
  .in-h1 {
    font-size: 3rem;
  }
  #fixed-menu {
    top: 50px;
    font-size: 1.4rem;
    padding: 20px 40px;
  }
  #mv,
  #SYSTEM {
    height: 700px;
  }

  .sns-links {
    display: flex;
  }
  .sns-instagram {
    margin-top: 28px;
  }
  .sns-twitter,
  .sns-instagram {
    width: 25%;
    overflow: hidden;
  }
  .map iframe {
    width: 60%;
    height: 400px;
  }
  #mv .mv-text {
    font-size: 3rem;
  }

  #concept p {
    font-size: 1.5rem;
    line-height: 2;
  }
  #SYSTEM .SYSTEM-text {
    font-size: 2.8rem;
  }
  #SYSTEM .SYSTEM-text p {
    margin: 10px 0;
  }
  .ACCESS-text {
    font-size: 1.5rem;
    line-height: 1.6;
  }
  .copyright p {
    font-size: 1rem;
  }
}