@media screen and (max-width:768px) {

  /*
   * header
   */
  h1 img {
    position: absolute;
    left: 24px;
    top: 30px;
    width: 90px;
  }
  .sp {
    display: inherit;
  }
  .pc {
    display: none;
  }
  .logo-copy {
    display: none;
  }
  .main-copy {
    text-align: center;
    font-size: 24px;
    left: 50%;
    top: 120px;
    transform: translate(-50%, 0%);
  }
  .main-copy > span {
    margin: auto;
    min-width: 327px;
  }
  .button {
    padding: 20px 40px 24px;
    font-size: 17px;
    max-width: 327px;
  }
  .top-btn {
    position: absolute;
    top: 25px;
    right: 24px;
    font-size: 11px;
    padding: 16px 32px 18px;
  }
  .top-img-wrap {
    margin-top: 421px;
  }
  .top-img-wrap > div {
    position: relative;
  }
  .top-img-wrap img {
    width: 100%;
  }
  .top-img-blur {
    left: 0;
    top: 0;
    width: 100%;
    height: 100px;
    background: linear-gradient(180deg, #F4F4F6 0%, rgba(244, 244, 246, 0) 100%);
  }
  .section {
    padding: 80px 24px 100px;
  }
  h2 {
    font-size: 20px;
  }
  .dots > div {
    width: 8px;
    height: 8px;
    margin: 0 6px;
  }
  .items {
    flex-wrap: wrap;
  }
  .problem {
    margin-top: 64px;
    text-align: center;
  }
  .problem .items {
    text-align: left;
    display: block;
  }
  .problem .items > div {
    margin: 0 auto;
    margin-bottom: 64px;
    width: 100%;
  }
  .problem .dots {
    margin-top: 0;
  }
  .problem img {
    width: 288px;
  }
  .problem .solution {
    text-align: left;
    margin-top: 40px;
    display: inline-block;
  }
  .problem .solution span {
    font-size: 18px;
    line-height: 200%;
  }
  .center {
    display: inline-block;
    text-align: left;
    margin: 48px 0 64px;
  }
  .toha {
    text-align: center;
  }
  .toha .bubble.sp {
    display: block;
  }
  .toha .items {
    padding: 0;
  }
  .toha .items > div {
    margin: 0;
  }
  .toha .items > div p {
    margin: 12px 0 0;
  }
  .toha .dots {
    display: block;
    width: 100%;
    height: inherit;
    margin: 24px 0!important;
  }
  .toha .dots div {
    flex-flow: column;
    text-align: center;
    margin: 8px auto;
    width: 8px;
    height: 8px;
  }
  .toha .triangle {
    width: 0!important;
    height: 0!important;
    border-style: solid;
    border-width: 18px 15px 0 15px;
    border-color: #000000 transparent transparent transparent;
    background: none;
  }
  .monetization img {
    width: 100%;
  }
  .strength .items {
    justify-content: inherit;
  }
  .strength .item {
    max-width: none;
  }
  .strength .item img {
    width: 50px;
    height: 50px;
    margin-right: 20px;
  }
  .strength .item > div {
    font-size: 16px;
  }
  .strength .item:nth-child(2n+1),
  .strength .item:nth-child(2n) {
    margin: 0 0 41px;
  }
  .strength .item:last-child {
    margin: 0;
  }
  .performance .items img {
    width: 150px;
    height: 150px;
    margin: 0;
    max-width: none;
  }
  .performance {
    padding: 0 9px;
  }
  .form {
    margin-top: 64px;
  }
  .wpcf7-text, .wpcf7-free-text {
    height: 62px;
    width: 100%;
  }
  .wpcf7-submit, .wpcf7-textarea {
    width: 100%;
  }
  footer {
    padding: 56px 24px 48px;
    display: block;
  }
  footer img {
    width: 90px;
    margin-bottom: 120px;
  }
  footer div a {
    display: block;
    margin-bottom: 16px;
  }
  footer div {
    line-height: 150%;
  }

}