footer {
  background-color: var(--dark-blue);
}


/* =============================================================================
   footer-top
============================================================================= */

.footer-top ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, 282px);
  justify-content: center;
  align-content: end;
  gap: 16px;
  padding: 80px 0px 40px 0px;
  margin: 0;
}

.footer-top ul li {
  box-sizing: border-box;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 40px;
}


.footer-top a {
  width: 282px;
  text-decoration: none;
  color: var(--dark-blue);
  line-height: 24px;
  letter-spacing: 0.64px;
  display: flex;
  padding: 8px 40px;
  justify-content: space-between;
  align-items: center;
  border-radius: 40px;
  background: #FFF;
  white-space: nowrap;
}

/* =============================================================================
   footer-middle
============================================================================= */

.footer-middle {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 0 120px 40px 120px;
  justify-content: space-between;
  align-items: flex-start;
  align-self: stretch;
  text-decoration: none;
}

.footer-middle-big-box {
  display: grid;
  grid-template-rows: repeat(2, auto);
  gap: 24px;
}

.footer-middle-box {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  flex: 0 0 auto;
  align-self: flex-start;
}

.footer-middle-title {
  display: flex;
  padding: 8px 16px;
  align-items: center;
  gap: 10px;
  align-self: stretch;
  color: #FFF;
  font-size: 20px;
  line-height: 20px;
  letter-spacing: 1px;
  border: 1px solid #FFF;
  text-decoration: none;
}

.footer-middle-link-box {
  display: flex;
  padding: 0 8px;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  align-self: stretch;
}

.footer-middle-link {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #FFF;
  font-size: 14px;
  line-height: 18px;
  letter-spacing: 0.56px;
  text-decoration: none;
}

@media (min-width: 1023px) {
  .footer-middle-link[href="/research_integrity/"] {
    border-top: 1px solid #FFF;
    padding-top: 8px;
    width: 100%;
  }
}

.footer-middle a:hover,
.footer-middle a:active {
  color: #FFF;
}

/* =============================================================================
   footer-info-box
============================================================================= */

.footer-info-box {
  display: flex;
  width: 290px;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}

.footer-info-link {
  color: #FFF;
  line-height: 24px;
  letter-spacing: 0.8px;
  align-self: stretch;
  text-decoration: none;
}

.footer-info-link img {
  vertical-align: middle;
  height: 24px;
}

/* =============================================================================
   footer-bottom
============================================================================= */

.footer-bottom {
  display: flex;
  padding: 40px 120px;
  align-items: flex-start;
  gap: 80px;
  border-top: 1px solid var(--dark-blue);
  background: #FFF;
}

.footer-logo {
  display: flex;
  width: 280px;
  flex-direction: column;
  align-items: flex-start;
  flex-shrink: 0;
  align-self: stretch;
}

.footer-info {
  display: flex;
  gap: 8px;
  align-self: stretch;
  align-items: flex-start;
  flex-direction: column;
  justify-content: space-between;
}

.footer-zip {
  font-weight: 400;
  line-height: 24px;
  letter-spacing: 0.8px;
  white-space: pre-wrap;
}

.footer-tel {
  font-weight: 400;
  line-height: 24px;
  letter-spacing: 0.8px;
  white-space: pre-wrap;
}

.footer-sns {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.footer-official-sns {
  font-weight: 400;
  line-height: 24px;
  letter-spacing: 0.8px;
}

.footer-facebook {
  display: flex;
  align-items: center;
  gap: 4px;
  align-self: stretch;
  font-size: 14px;
  font-weight: 400;
  line-height: 24px;
  letter-spacing: 0.7px;
  text-decoration: none;
}

.footer-copyright {
  display: flex;
  padding: 40px 0;
  justify-content: center;
  align-items: center;
  gap: 10px;
  align-self: stretch;
  border-top: 1px solid #FFF;
  background: var(--dark-blue);
  color: #FFF;
  line-height: 24px;
  letter-spacing: 0.8px;
  text-align: center;
}

/* =============================================================================
   @media
============================================================================= */

@media (max-width: 1200px) {
  .footer-bottom {
    gap: 40px;
    padding: 40px 52px;
  }
}

/* =============================================================================
   @media：TB
============================================================================= */

@media (max-width: 1023px) {
  footer {
    display: flex;
    flex-direction: column;
  }

  .header-sp {
    display: block;
    transition: transform 0.3s;
  }

  /* footer-top */
  .footer-top {
    order: 2;
  }

  .footer-top a {
    width: 311px;
  }

  .footer-top ul {
    padding: 40px 64px 0 64px;
  }

  /* footer-middle */
  .footer-middle {
    display: contents;
  }

  .footer-middle-big-box {
    gap: 16px;
    margin-bottom: 16px;
    order: 1;
    padding: 0 48px;
  }

  .footer-middle-big-box:first-child {
    margin-top: 40px;
  }

  .footer-middle-box {
    display: flex;
    padding: 0 16px;
    justify-content: space-between;
    align-items: center;
  }

  .footer-middle-link-box {
    display: none;
  }

  .footer-middle-title {
    border: 1px solid #FFF;
    font-size: 16px;
    line-height: 20px;
    letter-spacing: 0.8px;
    padding: 8px 16px;
    justify-content: space-between;
    cursor: pointer;
  }

  .footer-middle-title.active .header-sp {
    transform: rotate(45deg);
    transition: transform 0.3s;
  }

  .footer-middle-title img.header-sp {
    width: 16px;
    height: 16px;
    transition: transform 0.3s;
  }

  .footer-middle-box.active .footer-middle-title img.header-sp {
    transform: rotate(45deg);
  }

  .footer-middle-box.active .footer-middle-link-box {
    display: flex;
    padding: 0 0 16px 0;
    width: 100%;
    box-sizing: border-box;
  }

  .footer-middle-box.active .footer-middle-link {
    width: 100%;
    border-bottom: 1px solid #FFF;
    padding: 8px 16px;
    box-sizing: border-box;
  }

  /* footer-info-box */
  .footer-info-box {
    order: 3;
    width: 100%;
    margin-top: 40px;
    padding: 0 48px 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    /* 2列を維持 */
    gap: 16px 20px;
    align-items: start;
    box-sizing: border-box;
    overflow-x: hidden;
  }

  .footer-info-link {
    display: block;
    width: 100%;
    font-size: 13px;
    /* 少し小さくして収まりやすくする */
    line-height: 1.4;
    word-break: break-all;
    /* 長い単語を強制改行 */
    letter-spacing: 0.5px;
  }

  .footer-info-box .footer-info-link:nth-child(1) { order: 1; }
  .footer-info-box .footer-info-link:nth-child(2) { order: 3; }
  .footer-info-box .footer-info-link:nth-child(3) { order: 5; }
  .footer-info-box .footer-info-link:nth-child(4) { order: 7; }
  .footer-info-box .footer-info-link:nth-child(5) { order: 9; }
  .footer-info-box .footer-info-link:nth-child(6) { order: 11; }

  .footer-info-box .footer-info-link:nth-child(7) { order: 2; }
  .footer-info-box .footer-info-link:nth-child(8) { order: 4; }
  .footer-info-box .footer-info-link:nth-child(9) { order: 6; }
  .footer-info-box .footer-info-link:nth-child(10) { order: 8; }
  .footer-info-box .footer-info-link:nth-child(11) { order: 10; }

  /* footer-bottom */
  .footer-bottom {
    order: 4;
    display: flex;
    padding: 40px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 24px;
    align-self: stretch;
    height: auto;
  }

  .footer-copyright {
    order: 5;
    display: flex;
    padding: 40px 0;
    justify-content: center;
    align-items: center;
    gap: 10px;
    align-self: stretch;
    color: #FFF;
    font-size: 10px;
    line-height: 24px;
    letter-spacing: 0.5px;
  }
}


/* =============================================================================
   @media：SP
============================================================================= */

@media (max-width: 767px) {

  .footer-middle-box {
    display: flex;
    padding: 0 24px;
  }

  /* footer-top */
  .footer-top ul {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    padding: 24px 24px 0px 24px;
  }

  .footer-top a {
    font-size: 14px;
    width: 100%;
    padding: 8px 12px;
    justify-content: center;
  }

  .footer-top .arrow-icon {
    display: none;
  }

  .footer-middle-big-box {
    padding: 0;
  }

  .footer-info-box {
    padding: 40px 24px;
    grid-template-columns: 1fr 1fr;
    /* スマホでも2列を維持 */
    gap: 16px 12px;
  }

  .footer-info-link {
    width: 100%;
  }



}

@media screen and (max-width: 425px) {

  /* footer-info-box */
  .footer-info-link {
    font-size: 12px;
    line-height: 24px;
    letter-spacing: 0.6px;
  }

  /* footer-bottom */
  .footer-zip {
    font-size: 14px;
  }

  .footer-tel {
    font-size: 14px;
  }

  .footer-official-sns {
    font-size: 14px;
  }
}

/* =============================================================================
   @media：print
============================================================================= */

@media print {
  .footer-bottom {
    padding: 40px 0;
  }

  footer {
    margin-top: 600px;
  }
}