html, body {
  background-color: #ffffff;
  font-family: '游ゴシック','Yu Gothic',Helvetica,Arial,"Hiragino Sans","Hiragino Kaku Gothic Pro","ヒラギノ角ゴ Pro W3","メイリオ","Meiryo",sans-serif;
  margin: 0;
  height: 100%;
}

* {
  box-sizing: border-box;
}

#top {
  background-image: url("images/top@2x.jpg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
  display: block;
  height: 100%;
  margin: 0 auto;
  max-width: 1440px;
  padding-bottom: 50px;
  position: relative;
}

.scroll {
  bottom: 50px;
  margin-left: 47.5%;
  position: absolute;
  width: 5%;
}

.scroll img {
  width: 100%;
}

#about-pc {
  background-image: url("images/about_image@2x.jpg");
  background-position: right top;
  background-repeat: no-repeat;
  background-size: 50%;
  margin-bottom: 200px;
  margin-top: 50px;
  min-height: 500px;
  width: 100%;
}

@media (min-width: 1440px) {
  #about-pc {
  display: block;
  margin: 0 auto;
  width: 1440px;
  }
}

.copy {
  display: inline;
  margin-left: 15%;
  margin-top: 75px;
  width: 40%;
}

.copy-ja {
  font-size: 20px;
  font-weight: bold;
  letter-spacing: 4px;
  line-height: 2em;
  margin-left: 15%;
  margin-top: 30px;
}

.about-sp-image {
  display: none;
}

.copy-sp, .copy-ja-sp {
  display: none;
}

#concept {
  background-attachment: fixed;
  background-image: url('images/concept_background.jpg');
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  margin-top: 100px;
  padding: 30px 0;
}

.title-image {
  display: block;
  margin: 100px auto 0;
  height: 30px;
}

h1 {
  text-align: center;
  font-size: 14px;
  letter-spacing: 1.5px;
}

.line {
  background-color: #000;
  height: 1px;
  margin: 40px auto;
  width: 10%;
}

p {
  display: block;
  font-size: 14px;
  line-height: 3em;
  margin:0 auto 50px;
  text-align: center;
  width: 70%;
}

.concept-en {
  max-width: 800px;
}

.concept-ja {
  letter-spacing: 0.5px;
  margin-bottom: 100px;
}

#access {
  background-color: #e6e6e6;
  padding: 1px 0 50px;
}

.map {
  display: block;
  margin: 0 auto;
  max-width: 500px;
  width: 97%;
}

#partners {
  display: none;
  overflow: hidden;
  padding-bottom: 100px;
}

#partners ul {
  display: block;
  margin: 0 auto;
  padding: 0;
  width: 60%;
}

.organization {
  float: left;
  list-style: none;
  padding: 20px 40px;;
  width: 33%;
}

.org-image {
  width: 100%;
}

.org-en {
  font-size: 14px;
  font-weight: bold;
  margin-top: 20px;
  text-align: center;
}

.org-ja {
  font-size: 12px;
  text-align: center;
}

#contact {
  background-image: url('images/contact_background.jpg');
  background-position: right;
  background-size: cover;
  padding: 1px 0;
}

#contact h1 {
  color: #ffffff;
}

#contact .line {
  background-color: #ffffff;
}

#contact p {
  color: #ffffff;
  font-size: 14px;
  margin-bottom: 100px;
}

.mail {
  font-weight: bold;
  margin-right: 10px;
}

footer {
  background-color: #000;
}

footer img {
  display: block;
  padding: 50px 0;
  margin: 0 auto;
  width: 200px;
}

@media (max-width: 1024px) {
  .scroll {
    margin-left: 45%;
    width: 10%;
  }

  #about-pc {
    margin-bottom: 100px;
    min-height: 350px;
  }

  .copy {
    margin-left: 13%;
    margin-top: 25px;
  }

  .copy-ja {
    margin-left: 13%;
  }

  #partners ul {
    overflow: hidden;
    width: 80%;
  }

  .organization {
    width: 50%;
  }
}

@media (max-width: 750px) {
  #top {
    background-image: url("images/top_sp.png");
  }

  .scroll {
    bottom: 20px;
    margin-left: 42.5%;
    width: 15%;
  }

  #about-pc {
    display: none;
  }

  #about-sp {
    background-color: #ffffff;
    padding-bottom: 150px;
  }

  .about-sp-image {
    display: block;
    margin-bottom: 10px;
    margin-left: 20%;
    width: 80%;
  }

  .copy, .copy-ja {
    display: none;
  }

  .copy-sp {
    display: block;
    margin-left: 20%;
    margin-top: 30px;
    width: 70%;
  }

  .copy-ja-sp {
    display: block;
    font-size: 14px;
    font-weight: bold;
    letter-spacing: 2px;
    line-height: 2em;
    margin-left: 20%;
    margin-top: 20px;
  }

  #concept {
    background: none;
  }

  #concept::before {
  content:"";
  display:block;
  position:fixed;
  top:0;
  left:0;
  z-index:-1;
  width:100%;
  height:100vh;
  background:url('images/concept_background.jpg') center/cover no-repeat;
  -webkit-background-size:cover;
  }

  .title-image {
    height: 20px;
  }

  h1 {
    font-size: 10px;
  }

  p {
    font-size: 12px;
    width: 90%;
  }

  #partners ul {
    width: 80%;
  }

  .organization {
    float: none;
    width: 100%;
  }
}