@media screen and (max-width: 767.99px) {
  body {
    font-family: "Noto Sans JP", serif;
  }
  .outfit {
    font-family: "Outfit", serif;
  }
  .pc {
    display: none;
  }
  header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 26px 15px;
    margin-bottom: 10px;
  }
  header .header_logo {
    margin: 0;
    padding: 0;
    position: relative;
    z-index: 20;
    font-size: inherit;
  }
  header .header_logo img {
    width: 220px;
    height: auto;
    vertical-align: middle;
  }
  header #header_menu_button {
    font-size: 9px;
    font-weight: 800;
    line-height: 1;
    font-family: "Outfit", serif;
    text-align: center;
    width: 40px;
    height: 40px;
    color: #213e53;
    background: transparent;
    border: none;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: absolute;
    top: 20px;
    right: 10px;
    z-index: 20;
  }
  header #header_menu_button::before {
    content: "MENU";
    order: 1;
    margin-top: 18px;
  }
  header #header_menu_button span.line {
    position: relative;
  }
  header #header_menu_button span.line::before, header #header_menu_button span.line::after {
    content: "";
    display: block;
    width: 26px;
    height: 3px;
    position: absolute;
    background: #213e53;
    position: absolute;
    left: calc(50% - 13px);
    transition: all 0.3s ease;
  }
  header #header_menu_button span.line::before {
    top: 0;
  }
  header #header_menu_button span.line::after {
    top: 9px;
  }
  header .menu-header_menu-container {
    position: fixed;
    inset: 0;
    z-index: 19;
    background: #ffffff;
    padding-top: 80px;
    display: none;
  }
  header .menu-header_menu-container::before {
    content: "";
    display: block;
    height: 1px;
    background: #e7e7e7;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
  }
  header .menu-header_menu-container #menu-header_menu {
    overflow-y: scroll;
    height: 100%;
    padding: 0;
    margin: 0;
    list-style-type: none;
  }
  header .menu-header_menu-container #menu-header_menu a {
    color: #213e53;
    text-decoration: none;
    display: block;
    position: relative;
  }
  header .menu-header_menu-container #menu-header_menu > li {
    border-bottom: 1px solid #e7e7e7;
    font-size: 16px;
    font-weight: 500;
    list-style: 1.2em;
  }
  header .menu-header_menu-container #menu-header_menu > li:has(ul) > a:after {
    content: "";
    display: block;
    width: 5px;
    height: 5px;
    border-right: 2px solid #00a0e9;
    border-bottom: 2px solid #00a0e9;
    position: absolute;
    top: 50%;
    right: 24px;
    transform: rotate(45deg) translateY(-100%);
  }
  header .menu-header_menu-container #menu-header_menu > li > a {
    padding: 16px 32px;
  }
  header .menu-header_menu-container #menu-header_menu > li > ul {
    padding: 12px 0 24px;
  }
  header .menu-header_menu-container #menu-header_menu > li > ul > li {
    font-size: 13px;
    font-weight: 500;
  }
  header .menu-header_menu-container #menu-header_menu > li > ul > li > a {
    padding: 8px 48px;
  }
  body.menu_open {
    height: 100%;
    overflow: hidden;
  }
  body.menu_open header .header_logo {
    position: fixed;
    top: 26px;
    left: 15px;
  }
  body.menu_open header #header_menu_button {
    position: fixed;
  }
  body.menu_open header #header_menu_button::before {
    content: "CLOSE";
  }
  body.menu_open header #header_menu_button span.line::before {
    top: 4px;
    transform: rotate(30deg);
  }
  body.menu_open header #header_menu_button span.line::after {
    top: 4px;
    transform: rotate(-30deg);
  }
  body.menu_open header .menu-header_menu-container {
    display: block;
  }
  .breadcrumb {
    margin: 0 15px;
  }
  .breadcrumb p {
    color: #cccccc;
    font-size: 10px;
    line-height: 1;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .breadcrumb p > a {
    vertical-align: bottom;
  }
  .breadcrumb p .home_icon {
    margin: 0 8px 0 0;
    width: 12px;
    height: auto;
    vertical-align: bottom;
  }
  .breadcrumb p [property="itemListElement"] {
    color: #aaaaaa;
    padding: 0 8px;
  }
  .breadcrumb p [property="itemListElement"] a {
    text-decoration: none;
  }
  .breadcrumb p [property="itemListElement"]:nth-last-of-type(1) {
    margin-right: 0;
  }
  main {
    background: url("../img/base/sub_ttl_bg_sp.png") no-repeat right top;
    background-size: 85.8% auto;
    padding-top: 1px;
    overflow: hidden;
    font-size: 14px;
    line-height: 1.875;
  }
  main p {
    margin-top: 1.875em;
    margin-bottom: 1.875em;
  }
  main img {
    max-width: 100%;
    height: auto;
    vertical-align: middle;
  }
  .page_children_area {
    background: linear-gradient(to bottom, #def3ff99 0%, #e6f6ff55 50%);
    border-radius: 30px 30px 0 0;
    padding: 64px 0 32px;
    margin-top: 80px;
  }
  .page_children_area .page_parent_name {
    font-size: 20px;
    line-height: 1.1;
    letter-spacing: 0.08em;
    padding: 0;
    margin: 0 24px 60px;
  }
  .page_children_area .page_parent_name a {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: inherit;
    text-decoration: none;
  }
  .page_children_area .page_parent_name a::before {
    content: "";
    display: block;
    background: url("../img/base/arw.svg") no-repeat center center;
    background-size: 8px 8px;
    border: 1px solid #213e53;
    border-radius: 50px;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    align-self: start;
  }
  .page_children_area .page_children_list {
    padding: 0;
    margin: 0;
    list-style: none;
  }
  .page_children_area .page_children_list li {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.33;
    letter-spacing: 0.024em;
    border-top: 1px solid #ffffff;
  }
  .page_children_area .page_children_list li a {
    color: #213e53;
    text-decoration: none;
    display: flex;
    align-items: center;
    min-height: 60px;
    box-sizing: border-box;
    padding: 8px 24px 8px 36px;
    gap: 12px;
  }
  .page_children_area .page_children_list li a::before {
    content: "";
    display: block;
    background: #213e53 url("../img/base/arw_w.svg") no-repeat center center;
    background-size: 8px 8px;
    width: 16px;
    height: 16px;
    border-radius: 50px;
    flex-shrink: 0;
  }
  .page_children_area .page_children_list li a.active {
    color: #00a0e9;
  }
  .page_children_area .page_children_list li a.active::before {
    background: #00a0e9 url("../img/base/arw_w.svg") no-repeat center center;
    background-size: 8px 8px;
  }
  .page_children_area + .large_link_area {
    padding-top: 70px;
  }
  .large_link_area {
    position: relative;
    padding: 70px 0;
    overflow: hidden;
  }
  .large_link_area .link_wrap {
    margin: 0 15px;
    padding: 0;
    list-style-type: none;
    display: flex;
    height: 170px;
  }
  .large_link_area .link_wrap li {
    width: 50%;
    display: flex;
  }
  .large_link_area .link_wrap li a {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
  }
  .large_link_area .link_wrap li a h2 {
    font-weight: 900;
    font-size: 18px;
    letter-spacing: 0.024em;
    line-height: 1;
    margin: 0 0 28px;
  }
  .large_link_area .link_wrap li a p {
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.064em;
    line-height: 1;
    margin: 0;
  }
  .large_link_area .link_wrap li a.contact_link {
    border-radius: 12px 0 0 12px;
    background: #213e53;
    color: #ffffff;
    padding-top: 9px;
  }
  .large_link_area .link_wrap li a.contact_link h2 {
    margin-top: 8px;
  }
  .large_link_area .link_wrap li a.recruit_link {
    border-radius: 0 12px 12px 0;
    background: #f6f7f8;
    color: #223e53;
    padding-top: 16px;
  }
  .large_link_area .link_wrap li a.recruit_link h2 {
    margin-top: 3px;
  }
  .large_link_area .text_for_decoration {
    position: absolute;
    display: flex;
    z-index: -1;
    bottom: 0;
    column-gap: 35px;
  }
  .large_link_area .text_for_decoration p {
    font-size: 100px;
    font-weight: 800;
    margin: 0;
    color: #ffffff;
    text-shadow: 1px 1px 0 #e8ebed, -1px -1px 0 #e8ebed, -1px 1px 0 #e8ebed, 1px -1px 0 #e8ebed, 0px 1px 0 #e8ebed, -1px 0 #e8ebed, -1px 0 0 #e8ebed, 1px 0 0 #e8ebed;
    animation: infinity_scroll 30s infinite linear 0.5s;
  }
  @keyframes infinity_scroll {
    from {
      transform: translateX(0%);
    }
    to {
      transform: translateX(-100%);
    }
  }
  footer .footer_logo {
    border-top: 1px solid #213e53;
    padding: 24px 20px 30px;
    background: #ffffff;
  }
  footer .footer_logo p {
    text-align: center;
    font-size: 12px;
    line-height: 1.67;
    color: #213e53;
    margin: 0;
  }
  footer .footer_logo p .prime {
    font-size: 10px;
  }
  footer .footer_logo p .sp_adjustment {
    display: flex;
    align-items: center;
    justify-content: center;
    column-gap: 5px;
  }
  footer .footer_logo p .sp_adjustment a {
    text-decoration: none;
    display: inline-block;
  }
  footer .footer_logo p .sp_adjustment a img {
    max-width: 240px;
    height: auto;
    margin-top: 4px;
  }
  footer .lower_part {
    background: linear-gradient(144deg, #213e53 0%, #213e53 80%, #185c80 100%);
  }
  footer .lower_part .menu-footer_menu-container {
    padding: 55px 20px 72px;
  }
  footer .lower_part .menu-footer_menu-container ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu {
    margin: 0 auto;
    display: grid;
    grid-template-rows: repeat(5, minmax(min-content, max-content));
    grid-template-columns: repeat(2, 1fr);
    gap: 50px 35px;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li > a {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: 0.032em;
    color: #ffffff;
    text-decoration: none;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.contact_link > a {
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    width: 275px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.contact_link .sub-menu {
    border: none;
    margin: 0 auto;
    padding-top: 11px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 275px;
    column-gap: 40px;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li .sub-menu {
    margin: 12px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 8px;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li .sub-menu li a {
    font-size: 10px;
    font-weight: 400;
    letter-spacing: 0.032em;
    opacity: 0.7;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.sp_grid_column1_2 {
    grid-column: 1/2;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.sp_grid_column2_3 {
    grid-column: 2/3;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.sp_grid_column1_3 {
    grid-column: 1/3;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.sp_grid_row1_3 {
    grid-row: 1/3;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.sp_grid_row3_5 {
    grid-row: 3/5;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.sp_grid_row3_4 {
    grid-row: 3/4;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.sp_grid_row4_5 {
    grid-row: 4/5;
  }
  footer .lower_part .menu-footer_menu-container #menu-footer_menu li.sp_grid_row5_6 {
    grid-row: 5/6;
  }
  footer .lower_part .copyright {
    padding-bottom: 55px;
    text-align: center;
    font-size: 10px;
    color: #ffffff;
    margin: 0;
  }
  .contents_404 {
    padding: 30px 0 75px;
  }
  .contents_404 p {
    font-size: 16px;
    text-align: center;
    margin: 0 auto 21px;
  }
  .contents_404 a {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0 auto;
    padding: 0;
    color: #213e53;
    text-decoration: none;
    width: max-content;
    column-gap: 10px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.064em;
  }
  .contents_404 a::before {
    content: "";
    width: 40px;
    height: 40px;
    border-radius: 100%;
    border: 1px solid #213e53;
    box-sizing: border-box;
    background: url("../img/base/arw.svg") no-repeat center center;
    background-size: 10px 10px;
  }
}