*{

}

html{
  margin: 0;
  padding: 0;
  font-size: 14px;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  overflow: hidden;

  background-color: var(--black);
}

:root{
  /* collors */
  --white: #ffffff;
  --black: #000000;
  --pale-white: rgba(255, 255, 255, 0.35);
  --gray: #D9D9D9;
/* font-familys */
  --default-font-family: 'helvetica';
  --second-font-family: "a-otf-ryumin-pr6n";
  /* font-sise */
  --title-font-sise: 3.5rem;
  --subtitle-font-sise: 1.5rem;
  --accent-font-sise: 1.25rem;
  --default-font-sise: 1rem;
  --desc-font-sise: 0.8rem;
  /* shadow */
  --section-shadow: 0 0 10px rgba(0, 0, 0, .1);
  /* texts */
  --default-letter-space: 0.1rem;
  --default-line-height: 2.5rem;
}

/* ボックス要素類 */
div{
  box-sizing: border-box;
}

/* tags */
a{
  text-decoration: none;
}

/* lists */
ul{
  margin: 0;
  padding: 0;
}
li{
  list-style: none;
}

/* texts */
a,h1,h2,h3,h4,h5,h6,p{
  margin: 0;
  letter-spacing: var(--default-letter-space);
  font-family: var(--default-font-family);
}
button{
  background-color: transparent;
  border: none;
  cursor: pointer;
  outline: none;
  padding: 0;
  appearance: none;
}
br.sp-onry{
  display: none;
}

@font-face {
  font-family: 'helvetica'; /* 任意のフォント名 */
  src: url('fonts/helvetica-225/Helvetica.ttf') format('truetype'); /* フォントファイルのパスと形式 */
}










header{
  position: fixed;
  top: 20px;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: 0.5s ease-in-out;
}
header.hide {
  top: -100px;
  opacity: 0;
}
.pc-header{
  width: 100%;
  height: 80px;
  box-sizing: border-box;
  padding: 0 50px;

  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sp-header{
  display: none;
}
  header .pc-header .sns-list{
    display: flex;
    gap: 1rem;
  }
    header .pc-header .sns-list img{
      width: 40px;
      height: 40px;
    }
  header .pc-header .logo-box{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);

    width: auto;
    height: 55px;
  }
    header .pc-header .logo-box img{
      width: auto;
      height: 100%;
    }
  header .pc-header .header-links{
    width: auto;
    height: 100%;

    display: flex;
    align-items: center;
    gap: 1rem;
  }
    .header-links-btn{
      width: 150px;
      height: 45px;
      border-radius: 30px;
      background-color: var(--white);

      display: flex;
      justify-content: center;
      align-items: center;
    }
      .header-links-btn p{
        width: auto;
        font-size: var(--accent-font-sise);
        font-weight: normal;
        color: #000000;
      }



.sp-alert{
  display: none;
}
/* @media screen and (max-width: 440px){
  .sp-alert{
    display: flex;
    justify-content: center;
    align-items: center;

    position: fixed;
    top: 0;
    left: 0;

    width: 100dvw;
    height: 100dvh;
  }
    .sp-alert p{
      text-align: center;
      color: var(--white);
      font-family: var(--second-font-family);
      font-size: var(--accent-font-sise);
    }
  main{
    display: none;
  }
  footer{
    display: none !important;
  }
} */




main{
  width: 100dvw;
  height: auto;
}
.section-container{
  max-width: 1170px;
  width: 100%;
  height: auto;
}





.side-nav{
  position: fixed;
  left: 50px;
  top: 50%;
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  -ms-transform: translateY(-50%);

  z-index: 1000;
}
  .side-nav .container{
    display: flex;
    flex-direction: column;
    gap: 20px;
  }
    .side-nav .container li{
      width: fit-content;
      height: fit-content;
    }
      .side-nav .container li a{
        width: fit-content;
        height: fit-content;
        writing-mode: vertical-rl;
        line-height: 1;
      }
        .side-nav .container li a p{
          font-weight: lighter;
          font-size: var(--default-font-sise);
          display: flex;
          align-items: center;
          gap: 5px;
          color: var(--pale-white);
          transition: color 0.3s ease;
        }
        .side-nav .container li a.active p{
          color: var(--white);
        }

.mordal-nav{
  display: none;
}





.arrow.prev {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 50.1px;
}
.arrow.prev::before,
.arrow.prev::after {
  content: "";
  position: absolute;
  top: calc(50% - 0px);
  left: 0;
  width: 20px;
  height: 2px;
  border-radius: 9999px;
  background-color: #ffffff;
  transform-origin: 0px 50%;
}
.arrow.prev::before {
  transform: rotate(62.5deg);
}
.arrow.prev::after {
  transform: rotate(-62.5deg);
}
.arrow.next {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 50.1px;
}
.arrow.next::before,
.arrow.next::after {
  content: "";
  position: absolute;
  top: calc(50% - 0px);
  right: 0;
  width: 20px;
  height: 2px;
  border-radius: 9999px;
  background-color: #ffffff;
  transform-origin: calc(100% - 0px) 50%;
}
.arrow.next::before {
  transform: rotate(62.5deg);
}
.arrow.next::after {
  transform: rotate(-62.5deg);
}






.circles-box{
  width: 65px;
  height: 20px;
  display: flex;
}
  .circles-box .circles{
    width: 20px;
    height: 20px;
    border-radius: 10px;
    margin-left: -5px;
    background-color: var(--white);
  }
  .circles-box .circles:first-child{
    margin-left: 0;
  }






.banner{
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);

  transition: 0.5s;

  z-index: 1000;
  opacity: 1;
}
.banner.hide {
  bottom: -100px;
  opacity: 0;
}
  .banner-container{
    overflow: hidden;
    position: relative;
    box-sizing: border-box;
    width: 250px;
    height: 40px;

    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    /* box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1); */
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);

    transition: 0.5s;

    padding: 0 10px;
    animation: flash 10s infinite ease-in-out;
  }
  @keyframes flash {
    0%, 100% {
      /* 明るく光るよう影を重ねる */
      box-shadow: 0 0 40px #ffe6fc20;
    }
    35%, 65% {
      /* 明るく光るよう影を重ねる */
      box-shadow: 0 0 40px #ffe6fc20;
    }
    50% {
      /* 淡く光るよう影を重ねる */
      box-shadow: 0 0 10px #ffffff, 0 0 20px #fcfcfc20, 0 0 30px #fcfcfc20, 0 0 40px #ffe6fc20;
    }
  }

    .banner-text{
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);

      width: 200px;
      height: 30px;

      display: flex;
      justify-content: center;
      align-items: center;

      transition: 0.5s;
    }
      .banner-text p{
        color: var(--white);
      }
    .banner-content{
      box-sizing: border-box;

      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      -webkit-transform: translate(-50%, -50%);
      -ms-transform: translate(-50%, -50%);

      box-sizing: border-box;

      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 20px;

      padding: 0 30px;

      transition: 0.5s;
    }
      .banner-content p{
        width: 100%;
        text-align: left;
        color: var(--white);
        opacity: 0;
        transition: 0.5s;
      }
      .banner-content a{
        width: auto;
        height: auto;
        opacity: 0;
        transition: 0.3s;

        display: flex;
        justify-content: center;
      }
      .banner-content a img{
        width: 200px;
        height: auto;
      }
  .banner-container:hover{
    width: 450px;
    height: 300px;
    padding: 2rem;
    transition-delay: 0s;
  }
    .banner-container:hover .banner-text{
      width: 0px;
      height: 0px;
      opacity: 0;
    }
    .banner-container:hover .banner-content{
      width: 100%;
      height: auto;
    }
    .banner-container:hover .banner-content p{
      opacity: 1;
    }
    .banner-container:hover .banner-content a{
      width: 100%;
      height: auto;
      opacity: 1;
    }
    .banner-container:hover .banner-content a img{
      width: 100%;
      height: auto;
    }








footer{
  margin-top: 200px;
  width: 100dvw;
  display: flex;
  justify-content: center;
  padding-bottom: 50px;
}
  .footer-container{
    max-width: 1170px;
    width: 100%;
  }
    .info-box{
      width: 100%;

      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 3rem;
    }
      .footer-logo{
        width: 80px;
        height: auto;

        margin-bottom: 30px;
      }
        .footer-logo img{
          width: 100%;
        }
        .footer-logo p{
          font-size: 0.6rem;
          text-align: center;
          letter-spacing: 0.2rem;
          font-family: var(--second-font-family);
          color: var(--white);
        }
      .footer-info{
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 50px;
      }
        .footer-info p{
          text-align: center;
          line-height: 2.5rem;
          font-size: var(--default-font-sise);
          color: var(--white);
          font-family: var(--second-font-family);
        }
          .footer-info-text p a{
            color: var(--white);
            font-family: var(--second-font-family);
            font-weight: bolder;
          }
    .site-map{
      width: 100%;
      height: auto;

      margin-top: 70px;
    }
      .site-map .upper-line{
        width: 100%;
        height: 1px;
        border-top: solid 1px var(--white);
      }
        .footer-links{
          width: auto;
          height: auto;
          padding: 20px 0;
          display: flex;
          justify-content: center;
          align-items: center;
          gap: 4rem;
        }
          .footer-links li{
            width: auto;
            height: 30px;

            display: flex;
            align-items: center;
            gap: 10px;
          }
            .footer-links li .list-decoration{
              width: 15px;
              height: 15px;
              border-radius: 10px;
              background-color: var(--white);
            }
            .footer-links li p{
              color: var(--white);
            }






@media (max-width: 440px){

br.sp-only{
  display: block;
}

header{
  top: 10px;
}
.pc-header{
  display: none;
}
.sp-header{
  width: 100%;
  height: 60px;
  box-sizing: border-box;
  padding: 0 20px;

  display: flex;
  justify-content: space-between;
  align-items: center;
}
  .sp-header .logo-box{
    width: auto;
    height: 45px;
  }
    .sp-header .logo-box img{
      height: 100%;
    }
          .sp-header label{
            display:flex;
            flex-direction:column;
            width:40px;
            cursor:pointer;
          }
          .sp-header label span{
            background: #fff;
            border-radius:10px;
            height:3px;
            margin: 3px 0;
            transition: .4s  cubic-bezier(0.68, -0.6, 0.32, 1.6);
          }
          .sp-header span:nth-of-type(1){
            width:50%;
          }
          .sp-header span:nth-of-type(2){
            width:100%;
          }
          .sp-header span:nth-of-type(3){
            width:75%;
          }
          .sp-header input[type="checkbox"]{
            display:none;
          }
          .sp-header input[type="checkbox"]:checked ~ span:nth-of-type(1){
            transform-origin:bottom;
            transform:rotatez(45deg) translate(4px,0px)
          }
          .sp-header input[type="checkbox"]:checked ~ span:nth-of-type(2){
            transform-origin:top;
            transform:rotatez(-45deg)
          }
          .sp-header input[type="checkbox"]:checked ~ span:nth-of-type(3){
            transform-origin:bottom;
            width:50%;
            transform: translate(16px,-2px) rotatez(45deg);
          }

.side-nav{
  position: fixed;
  left: 5px;
  top: 50%;
  transform: translateY(-50%);
  -webkit-transform: translateY(-50%);
  -ms-transform: translateY(-50%);

  z-index: 1000;
}

.mordal-nav {
  display: block;

  position: fixed;
  top: 10px;
  right: -250px;
  z-index: 20;

  padding: 50px;

  background: rgba(255, 255, 255, 0.36);
  border-radius: 16px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
  backdrop-filter: blur(8.4px);
  -webkit-backdrop-filter: blur(8.4px);

  transition: 0.2s ease-in-out;
  transition-delay: 0.1s;
}
.mordal-nav.active{
  right: 10px;
}
  .mordal-links{
    display: flex;
    flex-direction: column;
    gap: 20px;
  }









  .circles-box{
    width: 50px;
    height: 15px;
    display: flex;
  }
    .circles-box .circles{
      width: 15px;
      height: 15px;
      border-radius: 8px;
      margin-left: -3px;
      background-color: var(--white);
    }
    .circles-box .circles:first-child{
      margin-left: 0;
    }


footer{
  box-sizing: border-box;
  padding: 0 20px;
}
  .footer-links{
    gap: 10px;
  }

.banner{
  display: none;
}

}