@media only screen and (max-width: 768px) {
  .home_page .key {
    --height: calc(100vh - 30px);
    --max-height: 167vw;
    --min-height: 450px;
    font-size: 8px;
  }
  .home_page .key .key_text::after {
    width: 120px;
    height: auto;
    aspect-ratio: 380/730;
  }
  .home_page .key .key_text::before {
    opacity: 0;
  }
  .home_page .key .key_text .item {
    padding: 60px 20px 40px;
    flex-direction: column-reverse;
    justify-content: flex-end;
    gap: 12px;
  }
  .home_page .key .key-slider {
    max-width: 100vw;
    margin: auto;
    width: 100%;
  }
  .home_page .key .catch {
    font-size: min(1.5625vw, 6px);
    text-align: center;
    margin: auto;
    height: 30.6em;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .home_page .key h2 {
    font-size: 4.2em;
    margin-bottom: 0.3em;
  }
  .home_page .key .ikey-scroll a {
    bottom: -27px;
    left: 0;
    right: 0;
    width: 54px;
    height: 54px;
    font-size: 12px;
    margin: 0 auto;
  }
  .home_page .key .ikey-scroll a::before {
    inset: -7px;
  }
  .home_page .key .key-ig {
    position: static;
    margin-right: -20px;
    margin-left: -25px;
  }
}
@media only screen and (max-width: 640px) {
  .home_page .key {
    font-size: 1.4vmin;
  }
}
@media only screen and (max-width: 768px) and (orientation: landscape) {
  .home_page .key {
    font-size: 1.4vmin;
  }
}
@media only screen and (max-width: 768px) {
  .ien {
    font-size: 16px;
    text-align: center;
    margin-bottom: 0px;
  }
  .ijp {
    font-size: 24px;
    text-align: center;
  }
  .ibtn a {
    margin: 0 auto;
    width: 220px;
    min-height: 60px;
    padding: 12px 40px 10px 15px;
  }
  .ibtn a::before {
    right: 10px;
    width: 20px;
    height: 20px;
  }
  .ibtn a::after {
    right: 18px;
    width: 5px;
    height: 5px;
  }
  .iconcerns {
    margin-top: 50px;
    padding-bottom: 60px;
  }
  .iconcerns::before {
    inset: 25% 0 0;
    background-position: bottom center;
  }
  .iconcerns .wrap {
    padding: 20px;
  }
  .iconcerns .ttl {
    text-align: center;
    margin-bottom: 15px;
    font-size: 21px;
  }
  .iconcerns .ttl span {
    display: block;
    padding-right: 0;
    padding-bottom: 5px;
  }
  .iconcerns .ttl span::before {
    top: unset;
    bottom: 0;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: 100px;
  }
  .iconcerns .ilist a {
    padding: 10px 15px 10px 40px;
    letter-spacing: 0px;
  }
  .iconcerns .ilist a::before {
    left: 10px;
    width: 20px;
    height: 20px;
    background-size: 10px auto;
  }
  .iconcerns .ilist a::after {
    right: 9px;
  }
  .iproblem .wrap {
    padding: 30px 0 15.625vw;
  }
  .iproblem .wrap::before {
    width: 44.0625vw;
    aspect-ratio: 150/260;
    top: unset;
    right: -20px;
  }
  .iproblem .wrap::after {
    width: 34.375vw;
  }
  .iproblem .ijp {
    font-size: min(5.625vw, 24px);
    padding-left: 0;
    margin-bottom: 20px;
  }
  .iproblem .box {
    flex-direction: column;
    gap: 25px;
  }
  .iproblem .ijp2 {
    margin-bottom: 0;
    padding-bottom: 10px;
    text-align: center;
    line-height: 1.5;
    font-size: 22px;
  }
  .iproblem .ijp2::before {
    width: 60px;
    right: 0;
    margin: 0 auto;
  }
  .iproblem .ivideo {
    width: min(87.5vw, 507px);
    height: min(49.375vw, 286px);
  }
  .iproblem .wrap::before {
    width: 59.3625vw;
  }
  .icooperate .icoop-img-ab {
    width: 86vw;
    top: -6.25vw;
  }
  .icooperate .wrap {
    padding: 63vw 0 50px;
  }
  .icooperate .wrap::before {
    width: 18.75vw;
  }
  .icooperate .box {
    margin: 0;
    width: 100%;
  }
  .icooperate .ihead {
    margin-bottom: 20px;
  }
  .icooperate .desc {
    margin-bottom: 20px;
  }
  .icooperate .icoop-post {
    display: block;
    margin-top: 50px;
  }
  .icooperate .icoop-post .ien {
    margin-bottom: 0;
  }
  .icooperate .icoop-post .ibtn {
    margin-top: 20px;
  }
  .icooperate .ijp2 {
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    font-size: 22px;
    padding-bottom: 10px;
  }
  .icooperate .ijp2::before {
    width: 60px;
    margin: 0 auto;
    right: 0;
  }
  .icooperate .ijp2::after {
    left: 0;
  }
  .icooperate .icoop-head {
    padding-top: 0;
    margin-bottom: 30px;
  }
  .icooperate .icoop-img {
    padding-right: 0;
    max-width: 500px;
    margin: 0 auto 15px;
  }
  .icontact {
    padding: 45px 0;
    background-attachment: local;
  }
  .icontact .ihead {
    margin-bottom: 5px;
  }
  .icontact .ihead::after {
    width: 50px;
    left: calc(100% + 10px);
  }
  .icontact .desc {
    margin-bottom: 20px;
  }
  .icontact .icontact-gr p {
    font-size: min(2.34375vw, 11px);
    height: 8.9375em;
  }
  .icontact .icontact-gr .num {
    font-size: 2em;
  }
  .icontact .icontact-tel .text {
    font-size: 1.1em;
  }
  .inquiry {
    padding-top: 50px;
  }
  .inquiry .ihead {
    margin-bottom: 20px;
  }
  .inquiry .inquiry-tab {
    margin-top: 0;
  }
  .inquiry .thead {
    justify-content: center;
  }
  .inquiry .thead li {
    position: relative;
    font-size: min(3.4375vw, 14px);
    width: 10em;
    height: 6em;
    padding-bottom: 2.2em;
  }
  .inquiry .thead li::after {
    position: absolute;
    bottom: 8px;
    left: 0;
    right: 0;
  }
  .inquiry .tcontent {
    padding: 30px 0;
    min-height: 360px;
  }
  .inquiry .inquiry-box {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .inquiry .inquiry-btn a {
    font-size: min(3.125vw, 14px);
    padding: 0.8em 1.4em 1em 0.8em;
    min-height: 5.4em;
    height: 100%;
    letter-spacing: 0.02em;
  }
  .inquiry .inquiry-btn a::after {
    right: 0.8em;
  }
  .inquiry .inquiry-banner {
    margin-top: 30px;
    max-width: 670px;
  }
  .istudy .wrap {
    padding: 45px 0;
  }
  .istudy .wrap::before {
    width: 60px;
  }
  .istudy .ihead {
    margin-bottom: 20px;
  }
  .istudy .list {
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
  }
  .istudy .item {
    width: 280px;
    height: 280px;
    padding: 15px;
  }
  .istudy .item .label {
    font-size: 14px;
    padding: 5px 10px 6px 15px;
  }
  .istudy .item .label::before {
    width: 10px;
  }
  .istudy .item .tt {
    font-size: 20px;
    margin-bottom: 14px;
  }
  .iflow .wrap {
    padding: 45px 0;
  }
  .iflow .wrap::before {
    width: 60px;
  }
  .iflow .wrap::after {
    width: 170px;
    height: auto;
    aspect-ratio: 880/1029;
  }
  .iflow .iflow-eff {
    bottom: unset;
    top: 57px;
    width: 60px;
  }
  .iflow .ijp {
    text-shadow:
      0 0 10px #fff,
      0 0 10px #fff;
  }
  .iflow .iflow-head {
    flex-direction: column;
    margin-bottom: 28px;
  }
  .iflow .step {
    flex-wrap: wrap;
    max-width: 500px;
    justify-content: center;
    gap: 15px;
    margin: 0 auto 30px;
    font-size: min(3.125vw, 14px);
  }
  .iflow .step li {
    width: 13.2em;
    height: 13.2em;
    padding: 1em 0.5em;
  }
  .iflow .step li::after {
    right: -0.9em;
    border-top-width: 1.1em;
    border-bottom-width: 1.1em;
    border-left-width: 1.3em;
  }
  .iflow .step li::before {
    top: 0.3em;
    left: 0.3em;
    font-size: 2.8em;
  }
  .iflow .step li:nth-child(2)::after {
    display: none;
  }
  .iflow .step img {
    width: 5.4em;
    height: 5.4em;
  }
  .iflow .step .step-tt {
    font-size: 1.3em;
    margin-bottom: 0.3076923077em;
    letter-spacing: 0.02em;
  }
  .iflow .step .step-desc {
    font-size: 1.1em;
  }
  .iflow .bnr-gr {
    margin-top: 25px;
    gap: 10px;
    flex-direction: column;
    align-items: center;
  }
  .iflow .bnr {
    width: 280px;
  }
  .iflow .bnr a {
    padding: 20px 20px 15px;
    min-height: 80px;
  }
  .iflow .bnr-en {
    font-size: 14px;
  }
  .iflow .brn-tt {
    font-size: 18px;
  }
  .iflow .brn-arr {
    width: 20px;
    height: 20px;
    padding-right: 2px;
  }
  .iflow .brn-arr::before {
    width: 5px !important;
    height: 5px !important;
  }
  .ilaywers .wrap {
    padding: 50px 0;
    display: block;
  }
  .ilaywers .wrap::before {
    width: 70px;
  }
  .ilaywers .ihead {
    margin-bottom: 15px;
  }
  .ilaywers picture {
    position: static;
    margin-left: -20px;
    margin-right: -20px;
    margin-bottom: 15px;
  }
  .ilaywers .desc {
    margin-top: 0;
    margin-bottom: 15px;
  }
  .ilaywers .desc p {
    margin-bottom: 15px;
    text-align: left;
  }
  .ilaywers .ibtn-gr {
    justify-content: center;
  }
  .iabout {
    padding: 80px 0 50px;
  }
  .iabout .iabout-eff {
    top: -30px;
    right: 0;
    left: 0;
    text-align: center;
    font-size: 40px;
  }
  .iabout .ihead {
    margin-bottom: 15px;
  }
  .iabout .wrap {
    gap: 0;
  }
  .iabout .iabout-tbl th,
  .iabout .iabout-tbl td {
    padding-top: 10px;
    padding-bottom: 10px;
    font-size: 14px;
  }
  .iabout .iabout-tbl th {
    font-size: 14px;
    width: 83px;
  }
  .iabout .iabout-tbl .fz16 {
    font-size: 14px;
  }
  .iabout .txt {
    width: 100%;
    margin-bottom: 20px;
  }
  .iabout .ig {
    max-width: 100%;
    margin: 0 auto 15px;
  }
  .iabout .imap {
    height: 260px;
  }
  .iabout .ibtn-gr {
    flex-direction: column;
    align-items: center;
    margin-top: 30px;
    gap: 15px;
  }
  .iabout .ibtn-ytb a {
    width: 220px;
    min-height: 60px;
  }
  .ifeatures {
    padding: 45px 0;
  }
  .ifeatures .ihead {
    margin-bottom: 20px;
  }
  .ifeatures .box {
    flex-direction: column;
    align-items: center;
    gap: 20px;
    max-width: 460px;
    margin: 0 auto 30px;
  }
  .ifeatures .box.hidden {
    height: min(125vw, 500px);
  }
  .ifeatures .box.hidden::before {
    height: 110px;
  }
  .ifeatures .item {
    width: 100%;
  }
  .ifeatures .point {
    font-size: 18px;
  }
  .ifeatures .point::after {
    font-size: 50px;
  }
  .ifeatures .txt {
    padding: 20px;
  }
  .ifeatures .ttl {
    font-size: 20px;
    margin-bottom: 10px;
  }
  .ifeatures .btn-more {
    font-size: 16px;
  }
  .ifeatures .btn-more::before {
    width: 50px;
    height: 50px;
    background-size: 12px auto;
    margin-right: 10px;
  }
  .ipost {
    padding: 50px 0;
  }
  .ipost .ipost-w {
    flex-direction: column;
  }
  .ipost .box {
    max-width: 100%;
    width: 100%;
  }
  .ipost .bx {
    padding: 20px;
  }
  .ipost .ipost-tt {
    font-size: 22px;
    margin-bottom: 15px;
  }
  .ipost .ipost-btn a {
    min-height: 50px;
  }
  .ipost li {
    margin-bottom: 15px;
  }
  .ipost li a .date {
    margin-bottom: 0.4em;
  }
  .ipost-banner {
    margin-top: 20px;
  }
  .ipost-banner .thead {
    padding: 15px;
  }
  .ipost-banner .ibnr-tt {
    font-size: 16px;
  }
  .ipost-banner .tbody {
    padding: 0 15px 15px;
  }
  .ipost-banner .row {
    margin-bottom: 10px;
    justify-content: center;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
  }
  .ipost-banner .col5 {
    flex-wrap: wrap;
  }
  .ipost-banner .col5 .ipt-bnr {
    width: calc((100% - 20px) / 3);
  }
  .ipost-banner .col4 {
    padding: 0;
    gap: 10px;
  }

  .ipost-banner .row{
    max-width: 420px;
  }

  .ipost-banner .row.col2{
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .ipost-banner .cus {
  }

  .ipost-banner .ipt-sty1 img{
    width: 100%;
  }

  .ipost-banner .ipt-sty1,
  .ipost-banner .ipt-sty2 {
    width: calc(50% - 5px);
    max-width: 100%;
  }
}
@media only screen and (max-width: 639px) {
  .iconcerns::before {
    top: 50%;
  }
  .iconcerns .ilist {
    grid-template-columns: 1fr;
  }
  .iconcerns .ilist a {
    letter-spacing: 0.05em;
  }
  .istudy .list {
    flex-direction: column;
    align-items: center;
  }
  .ilaywers .ibtn-gr {
    flex-direction: column;
  }
}
@media only screen and (min-width: 640px) and (max-width: 768px) {
  .iproblem .wrap::before {
    width: 59.3625vw;
  }
  .inquiry .thead li.active::after {
    background-position: center;
  }
  .ilaywers .ibtn-gr {
    display: flex;
    justify-content: center;
    gap: 15px;
  }
  .iabout .ibtn-gr {
    flex-direction: row;
  }
  .iflow .bnr a .brn-arr::before {
    rotate: 45deg;
    transform: translate(-1px, 1px);
  }
}
@media only screen and (max-width: 374px) {
  .iabout .iabout-tbl .fz16,
  .iabout .iabout-tbl td,
  .iabout .iabout-tbl th {
    font-size: 13px;
  }
}
@media only screen and (min-width: 525px) and (max-width: 768px) {
  .home_page .key .catch {
    height: auto;
  }
}
@media only screen and (min-width: 750px) and (max-width: 768px) {
  .home_page .key {
    --min-height: 820px;
  }
}