.footer {
  width: 100%;
  background: #231815;
  padding: 20px 0;
  color: #fff;
  font-size: 1.3rem;
  font-family: 'Noto Serif JP', serif;
  letter-spacing: -0.02em;
}

.footer__inner {
  margin: auto;
  width: 100%;
  max-width: 1000px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
}

.footer__link a {
  color: #fff;
  font-size: 14px;
  text-decoration: none;
  display: inline-block;
}

.footer__link a + a {
  margin-left: 10px;
}

.footer__sns {
  display: flex;
}

.footer__sns a {
  width: 40px;
  height: 40px;
  background: #fff;
  border-radius: 50%;
  text-align: center;
  line-height: 30px;
}

.footer__sns > a > img { 
  width: 20px;
}

.footer__sns > a.youtube > img { 
  width: 25px;
}

.footer__sns > a + a {

  margin-left: 6px;
}

.footer__copyright {
  width: 100%;
  max-width: 1000px;
  display: block;
  margin: auto;
  margin-top: 17px;
  padding-top: 17px;
  letter-spacing: 0.02em;
  font-size: 10px;
  text-align: center;
  border-top: 1px solid #fff;
}
@media screen and (max-width: 768px) {
  .footer__inner {
    width: 100%;
    flex-direction: column;
    text-align: center;
  }
  .footer__link {
    width: 100%;
  }
  .footer__link a {
    display: block;
  }
  .footer__link a + a {
    margin-left: 0;
    margin-top: 6px;
  }
  .footer__sns {
    width: 100%;
    justify-content: center;
    margin-top: 3.448275862068965%;
  }

  .footer__sns a {
    padding: 9px 0;
    line-height: 1;
  }
  .footer__sns > a.youtube {
    padding: 8px 0 6px;
  }

  .footer__sns > a > img {
    width: 50%;
    margin: auto;
  }

  .footer__sns > a.youtube > img { 
    width: 58%;
  }

  .footer__sns > a + a {
    margin-left: 8px;
  }

  .footer__copyright .footer__copyright {
    width: 90.625%;
    margin-top: 15px;
    padding-top: 15px;
    font-size: 1rem;
  }
}

.footer--sp .footer__inner {
  width: 100%;
  flex-direction: column;
  text-align: center;
}
.footer--sp .footer__link {
  width: 100%;
}
.footer--sp .footer__link a {
  display: block;
}
.footer--sp .footer__link a + a {
  margin-left: 0;
  margin-top: 6px;
}
.footer--sp .footer__sns {
  width: 100%;
  justify-content: center;
  margin-top: 3.448275862068965%;
}

.footer--sp .footer__sns a {
  padding: 9px 0;
  line-height: 1;
}
.footer--sp .footer__sns > a.youtube {
  padding: 8px 0 6px;
}

.footer--sp .footer__sns > a > img {
  width: 50%;
  margin: auto;
}

.footer--sp .footer__sns > a.youtube > img {
  width: 58%;
}

.footer--sp .footer__sns > a + a {
  margin-left: 8px;
}