html {
  font-size: 16px;
  /* scroll-behavior: smooth; */
}
body {
  background: #f2f6ff;
  height: 100%;
  font-size: 1rem;
  /* font-family: "Helvetica Neue", Arial, "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", Meiryo, sans-serif; */
  font-family: SourceHanSansJP-Light, YuGothic, "Yu Gothic", "游ゴシック体",
    "游ゴシック", "ヒラギノ角ゴ Pro W3", "Hiragino Kaku Gothic Pro", "メイリオ",
    Meiryo, "ＭＳ Ｐゴシック", Osaka, "MS PGothic", Arial, Helvetica, Verdana,
    sans-serif;
}

footer {
  margin: 0px 0 0 0;
  padding: 30px;
  width: 100%;
  background: rgba(0, 0, 0, 0.8);
}

footer p {
  margin: 0px 0 0 0;
  width: 100%;
  color: #aaa;
  font-size: 0.8rem;
  text-align: right;
}

footer .inner {
  display: grid;
  grid-template-columns: 1fr 280px;
  justify-content: space-around;
  align-items: center;
  margin: 0 auto 0;
  padding: 0;
  width: 100%;
  max-width: 1440px;
}

footer img {
  width: 220px;
  text-align: right;
}

footer .aist-logo {
  width: 140px;
}

footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

footer li a {
  display: block;
  margin: 0 0 10px 0;
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
}

@media screen and (max-width: 900px) {
  footer {
    padding: 16px;
  }
  footer .inner {
    display: grid;
    grid-template-columns: 1fr 180px;
    justify-content: space-around;
    align-items: center;
    margin: 0 auto 0;
    padding: 0;
    width: 100%;
    max-width: 1440px;
  }
  footer p {
    margin: 16px 0 0 0;
    padding: 0;
    font-size: 0.5rem;
    text-align: center;
  }
  footer img {
    width: 180px;
    text-align: right;
  }
  footer ul {
    list-style: none;
    margin: 10px 0 0 0;
    padding: 0;
    display: inline-block;
  }
  footer li a {
    font-size: 0.7rem;
  }
}

@media screen and (max-width: 480px) {

  footer .aist-logo {
    width: 100px;
  }
}