html {
  width: 100%;
  font-size: 62.5%;
  box-sizing: border-box; }

body {
  background-color: #E5E8E9;
  color: #0B0B0D;
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 400;
  font-size: clamp(1.4rem, 1.6vw, 1.6rem);
  line-height: 1.7;
  letter-spacing: 1px;
  text-align: left; }

li {
  list-style: none; }

a {
  text-decoration: none; }
  a:hover {
    opacity: 0.5;
    transition: all 0.4s; }

h2 {
  font-size: clamp(5rem, 9vw, 9rem);
  font-family: "Noto Sans", sans-serif;
  color: #192F60;
  font-weight: 800;
  line-height: 1; }

.h2_big {
  font-size: clamp(6rem, 11vw, 11rem); }

h3 {
  font-size: clamp(2.3rem, 2.8vw, 2.8rem);
  color: #fff;
  line-height: 1;
  letter-spacing: 5px; }

.pc_none {
  display: none; }

header {
  width: 100%;
  height: 85px;
  background-color: #192F60; }

.header_inner {
  position: relative;
  width: 90%;
  max-width: 1380px;
  height: 100%;
  margin: 0 auto; }

.img_logo {
  position: absolute;
  top: 0;
  bottom: 0;
  margin: auto 0;
  left: 0;
  width: 50vw;
  max-width: 442px; }

#g-nav {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  width: 40vw;
  height: fit-content;
  margin: auto 0; }
  #g-nav ul {
    display: flex;
    height: 100%;
    max-width: 580px;
    justify-content: space-between;
    align-items: center; }
  #g-nav li a {
    padding: 10px;
    font-size: clamp(1.6rem, 1.4vw, 1.8rem);
    color: #E5E8E9; }

.openbtn1, .sp_nav_inquiry {
  display: none; }

.tel_link {
  color: #E5E8E9; }

@media (max-width: 1100px) {
  .header_inner {
    width: 86%; }

  #g-nav {
    position: fixed;
    top: inherit;
    bottom: -120%;
    left: 0;
    width: 100%;
    height: 100vh;
    margin: 0;
    background: #192F60;
    transition: all 0.6s;
    z-index: 999; }

  #g-nav.panelactive {
    bottom: 0; }

  #g-nav ul {
    display: block;
    position: absolute;
    top: 0;
    bottom: 200px;
    left: 0;
    right: 0;
    width: fit-content;
    height: fit-content;
    margin: auto;
    z-index: 999; }

  #g-nav li {
    margin: 20px;
    text-align: center; }

  #g-nav li a {
    display: block;
    padding: 10px;
    text-transform: uppercase;
    font-size: 1.8rem;
    letter-spacing: 10px; }

  .nav_inquiry {
    display: none; }

  .sp_nav_inquiry {
    display: block;
    position: absolute;
    bottom: clamp(50px, 100vw, 100px);
    left: 0;
    right: 0;
    width: 86%;
    padding: 30px 0;
    margin: 0 auto;
    border-top: 1px solid #E5E8E9;
    border-bottom: 1px solid #E5E8E9;
    color: #E5E8E9; }
    .sp_nav_inquiry h3 {
      margin-bottom: 20px;
      text-align: center;
      font-size: 2.3rem;
      color: #E5E8E9; }
    .sp_nav_inquiry table {
      margin: 0 auto;
      font-size: 1.6rem; }
    .sp_nav_inquiry th {
      padding: 0 20px 10px 0;
      font-weight: 400; }

  .openbtn1 {
    display: block;
    position: absolute;
    top: 0;
    right: 0;
    width: 65px;
    height: 85px;
    cursor: pointer;
    z-index: 9999; }
    .openbtn1 span {
      display: inline-block;
      transition: all .4s;
      position: absolute;
      left: 0;
      right: 0;
      margin: 0 auto;
      height: 2px;
      background-color: #E5E8E9;
      width: 100%; }
      .openbtn1 span:nth-of-type(1) {
        top: 27px; }
      .openbtn1 span:nth-of-type(2) {
        top: 42px; }
      .openbtn1 span:nth-of-type(3) {
        top: 57px; }

  .openbtn1.active {
    position: fixed;
    top: 0;
    right: 7%; }

  .active span:nth-of-type(1) {
    top: 36px;
    transform: translateY(6px) rotate(-45deg); }

  .active span:nth-of-type(2) {
    opacity: 0; }

  .active span:nth-of-type(3) {
    top: 49px;
    transform: translateY(-6px) rotate(45deg); } }
@media (max-width: 600px) {
  header {
    height: 53px; }

  .img_logo {
    width: 60vw; }

  .openbtn1 {
    width: 42px;
    height: 53px; }
    .openbtn1 span {
      height: 1.5px; }
      .openbtn1 span:nth-of-type(1) {
        top: 16px; }
      .openbtn1 span:nth-of-type(2) {
        top: 26px; }
      .openbtn1 span:nth-of-type(3) {
        top: 36px; }

  .active span:nth-of-type(1) {
    top: 23px; } }
.sec_top {
  position: relative;
  width: 100%;
  height: calc(100vh - 85px); }
  .sec_top::before {
    content: "";
    position: absolute;
    top: 0;
    width: 100%;
    height: 93%;
    background-color: #192F60; }

.img_catchcopy {
  position: absolute;
  top: 145px;
  left: 10vw;
  width: clamp(314px, 80%, 884px);
  z-index: 1; }

.img_top_1_wrap {
  position: absolute;
  top: 0;
  right: 33.5vh;
  width: auto;
  height: 100%; }
  .img_top_1_wrap img {
    width: auto;
    height: 100%;
    clip-path: polygon(40% 0, 100% 0, 60% 100%, 0% 100%);
    object-fit: cover; }

.img_top_2_wrap {
  position: absolute;
  top: 0;
  right: 0;
  width: auto;
  height: 100%; }
  .img_top_2_wrap img {
    width: auto;
    height: 100%;
    clip-path: polygon(51.8% 0, 100% 0, 100% 100%, 0% 100%);
    object-fit: cover; }

@media (max-width: 1100px) {
  .sec_top {
    max-height: 1281px; }

  .img_catchcopy {
    top: 0;
    bottom: 10%;
    left: 0;
    right: 0;
    margin: auto; }

  .img_top_1_wrap {
    right: 20%; }
    .img_top_1_wrap img {
      width: 100%;
      clip-path: polygon(0 0, 100% 0%, 100% 100%, 0% 100%);
      object-position: 100% 50%; }

  .img_top_2_wrap {
    width: 50%; }
    .img_top_2_wrap img {
      width: 100%;
      clip-path: polygon(51.8% 0, 100% 0, 100% 100%, 0% 100%);
      object-position: 13% 50%; } }
@media (max-width: 600px) {
  .sec_top {
    height: calc(100vh - 45px); }
    .sec_top::before {
      height: 50%; }

  .img_top_1_wrap {
    top: -15px;
    right: 0;
    width: 100%;
    height: 61%; }
    .img_top_1_wrap img {
      width: 100%;
      height: 100%;
      clip-path: polygon(0 20%, 100% 0%, 100% 80%, 0% 100%);
      object-position: bottom; }

  .img_top_2_wrap {
    top: 39vh;
    width: 100%;
    height: 60vh; }
    .img_top_2_wrap img {
      width: 100%;
      height: 100%;
      clip-path: polygon(0 19%, 100% 0, 100% 81%, 0% 100%);
      object-position: center; } }
.sec_about {
  position: relative;
  width: 80%;
  max-width: 1280px;
  margin: 140px auto 0; }
  .sec_about h2 {
    margin-bottom: 70px;
    font-size: clamp(6.2rem, 11vw, 12rem); }
  .sec_about h3 {
    margin-bottom: 30px;
    font-size: clamp(2.3rem, 3.4vw, 3.4rem);
    color: #192F60;
    letter-spacing: clamp(3px, 0.5vw, 5px); }

.sec_about_inner {
  position: relative;
  width: 100%;
  height: auto;
  margin-bottom: 120px; }

.sec_about_read {
  width: 60%; }
  .sec_about_read p {
    margin-bottom: clamp(15px, 2vw, 20px);
    font-size: clamp(1.6rem, 1.6vw, 2rem); }

.tochigi_img {
  position: absolute;
  bottom: -5px;
  right: 0;
  width: clamp(330px, 30%, 380px);
  height: auto; }

.steel_construction {
  display: flex;
  justify-content: space-between; }

.steel_construction_read {
  width: 55%;
  margin: auto 0;
  color: #192F60; }
  .steel_construction_read h4 {
    position: relative;
    padding: 0 0 clamp(14px, 2vw, 20px) 5%;
    margin-bottom: clamp(14px, 2vw, 20px);
    font-size: clamp(2rem, 2.8vw, 2.8rem);
    letter-spacing: 1.5px; }
    .steel_construction_read h4::before {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 120%;
      height: 1px;
      background-color: #192F60; }
  .steel_construction_read p {
    padding-left: 5%;
    letter-spacing: 0.5px; }

.steel_construction_img {
  width: 45%;
  height: auto;
  z-index: 1; }
  .steel_construction_img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: right;
    clip-path: polygon(23% 0, 100% 0, 100% 100%, 0% 100%); }

@media (max-width: 1100px) {
  .sec_about {
    width: 86%;
    margin-top: 100px; }
    .sec_about .pc_none {
      display: block; }

  .sec_about_read {
    width: 80%; }

  .tochigi_img {
    bottom: -55px;
    opacity: 0.4;
    z-index: -1; }

  .steel_construction_read {
    width: 50%; }
    .steel_construction_read h4 {
      padding-left: 0; }
      .steel_construction_read h4::before {
        width: 120%; }
    .steel_construction_read p {
      padding-left: 0; }

  .steel_construction_img {
    width: 50%; }
    .steel_construction_img img {
      object-position: center; } }
@media (max-width: 600px) {
  .sec_about h3 {
    margin-bottom: 25px; }

  .sec_about_inner {
    margin-bottom: 65px; }

  .sec_about_read {
    width: 100%; }
    .sec_about_read p {
      letter-spacing: 0.5px; }

  .tochigi_img {
    bottom: -10px;
    left: 0;
    width: 95%;
    margin: 0 auto; }

  .steel_construction {
    display: block; }

  .steel_construction_read {
    width: 100%; }
    .steel_construction_read h4::before {
      width: 100%; }
    .steel_construction_read p {
      margin-bottom: 25px; }

  .steel_construction_img {
    width: 100%; }
    .steel_construction_img img {
      clip-path: polygon(0% 0, 100% 0, 100% 100%, 0% 100%); } }
.sec_company {
  position: relative;
  width: 100%;
  padding-bottom: 80px;
  margin-top: 180px; }
  .sec_company h2 {
    padding-left: 43%;
    letter-spacing: -4px; }

.sec_company_bg {
  width: 52%;
  padding: 50px 5% 50px 43%;
  background-color: #192F60;
  color: #fff; }

.sec_company h3 {
  padding: 0 0 clamp(26px, 3vw, 40px) 15px; }
.sec_company table {
  font-size: clamp(1.4rem, 1.6vw, 1.8rem);
  letter-spacing: 2px; }
.sec_company th {
  width: 25%;
  padding: 0 20px clamp(10px, 1.5vw, 20px) 15px;
  font-weight: 400; }

.sec_company_img {
  position: absolute;
  top: 0;
  left: 0;
  width: 43%;
  max-width: 840px;
  height: 100%; }
  .sec_company_img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    clip-path: polygon(0 0, 100% 0, 60% 100%, 0% 100%); }

@media (max-width: 1100px) {
  .sec_company {
    padding-bottom: 0;
    margin-top: 110px; }
    .sec_company h2 {
      padding: 0 5%; }
    .sec_company h3 {
      padding-left: 0; }
    .sec_company th {
      width: 25%;
      padding-left: 0;
      font-weight: 400; }

  .sec_company_bg {
    width: 86%;
    padding: 40px 0 0 0;
    margin: 0 auto;
    background: none; }

  .sec_company_sp_bg {
    position: relative;
    padding-bottom: 510px; }

  .sec_company_img {
    top: 0;
    width: 100%;
    max-width: none;
    background-color: #192F60;
    z-index: -1; }
    .sec_company_img img {
      height: 600px;
      position: absolute;
      bottom: 0;
      object-position: 0 40%;
      clip-path: polygon(0 40%, 100% 0%, 100% 100%, 0% 100%); } }
@media (max-width: 600px) {
  .sec_company h2 {
    letter-spacing: -2px; }
  .sec_company th {
    width: 32%; }

  .sec_company_img img {
    height: 545px;
    object-position: 35% 0;
    clip-path: polygon(0 30%, 100% 0%, 100% 100%, 0% 100%); } }
.sec_recruit {
  position: relative;
  width: 100%;
  padding-bottom: 80px;
  margin-top: 180px; }

.sec_recruit_bg {
  width: 47%;
  padding: 50px 43% 50px 10%;
  margin-top: -15px;
  background-color: #192F60;
  color: #fff; }

.sec_recruit h2 {
  display: inline-block;
  padding-left: 10%;
  letter-spacing: -1px; }
.sec_recruit h3 {
  display: inline-block;
  padding: 0 47px 0 15px;
  vertical-align: middle;
  line-height: clamp(30px, 3.7vw, 37px); }
.sec_recruit h4 {
  display: inline-block;
  padding: 0 30px;
  vertical-align: middle;
  background-color: #fff;
  color: #192F60;
  line-height: clamp(30px, 3.7vw, 37px); }
.sec_recruit p {
  padding: clamp(23px, 2.8vw, 30px) 0 clamp(23px, 2.8vw, 30px) 15px;
  font-size: clamp(1.6rem, 1.6vw, 1.8rem); }
.sec_recruit th {
  width: 27%;
  padding: 0 15px 10px 15px;
  font-weight: 400; }

.sec_recruit_img {
  position: absolute;
  top: 0;
  right: 0;
  width: 43%;
  max-width: 840px;
  height: 100%; }
  .sec_recruit_img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 70% 50%;
    clip-path: polygon(40% 0, 100% 0, 100% 100%, 0% 100%); }

@media (max-width: 1100px) {
  .sec_recruit {
    padding-bottom: 0;
    margin-top: clamp(40px, 8vw, 110px); }
    .sec_recruit h2 {
      padding: 0 5%; }
    .sec_recruit h3, .sec_recruit p, .sec_recruit th {
      padding-left: 0; }

  .sec_recruit_bg {
    width: 86%;
    padding: 40px 0 0 0;
    margin: calc(clamp(8px,1.5vw,15px)*-1) auto 0;
    background: none; }

  .sec_recruit_sp_bg {
    position: relative;
    padding-bottom: 520px; }

  .sec_recruit_img {
    top: 0;
    width: 100%;
    max-width: none;
    background-color: #192F60;
    z-index: -1; }
    .sec_recruit_img img {
      height: 600px;
      position: absolute;
      bottom: 0;
      object-position: 60% 0;
      clip-path: polygon(0 40%, 100% 0%, 100% 100%, 0% 100%); } }
@media (max-width: 600px) {
  .sec_recruit th {
    width: 30%; }
  .sec_recruit td {
    padding-bottom: 10px; }

  .sec_recruit_img img {
    height: 545px;
    object-position: 75% 0;
    clip-path: polygon(0 30%, 100% 0%, 100% 100%, 0% 100%); } }
.sec_inquiry {
  width: 100%;
  height: auto;
  padding: 60px 0;
  margin-top: 180px;
  background-image: url("../img/sky.webp");
  background-size: cover;
  background-repeat: no-repeat;
  color: #fff;
  text-align: center; }
  .sec_inquiry h2 {
    position: relative;
    padding-bottom: clamp(15px, 2.6vw, 30px);
    color: #fff;
    font-size: clamp(2.5rem, 3.3vw, 4rem);
    letter-spacing: 2px; }
    .sec_inquiry h2::before {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      width: 330px;
      height: 1px;
      margin: 0 auto;
      background-color: #fff; }
  .sec_inquiry h3 {
    padding: clamp(15px, 2.6vw, 30px) 0 20px;
    font-size: clamp(2rem, 2.3vw, 2.8rem);
    letter-spacing: 3px; }
  .sec_inquiry table {
    margin: 0 auto;
    font-size: clamp(1.6rem, 1.7vw, 1.8rem);
    font-weight: 400;
    text-align: left; }
  .sec_inquiry th {
    padding-right: clamp(20px, 3vw, 40px);
    font-weight: 400; }

@media (max-width: 1100px) {
  .sec_inquiry {
    margin-top: 0; } }
@media (max-width: 600px) {
  .sec_inquiry {
    width: 86%;
    padding: 80px 7%;
    text-align: left; }
    .sec_inquiry h2::before {
      width: 85vw;
      margin: 0; }
    .sec_inquiry table {
      margin: 0; } }
footer {
  width: 100%;
  padding: 50px 0 20px;
  background-color: #192F60; }
  footer ul {
    display: flex;
    width: 50%;
    max-width: 600px;
    margin: 0 auto 50px;
    justify-content: space-between;
    font-size: clamp(1.6rem, 1.5vw, 1.8rem); }
    footer ul a {
      color: #fff;
      padding: 10px; }
  footer small {
    display: block;
    text-align: center;
    color: #E5E8E9;
    font-size: clamp(1.2rem, 1.4vw, 1.4rem); }

@media (max-width: 1100px) {
  footer {
    position: relative;
    padding: 70px 0 20px; }
    footer ul {
      display: none; }

  .footer_top_btn {
    position: absolute;
    top: 20px;
    right: 7%;
    width: 50px;
    height: 50px; }
    .footer_top_btn a {
      display: block;
      padding: 10px; }
      .footer_top_btn a:hover {
        opacity: 1; }
      .footer_top_btn a:hover span {
        transform: translateY(-4px);
        transition: all 0.3s; }
    .footer_top_btn span {
      display: block;
      margin: 0 auto 5px;
      width: 14px;
      height: 9px;
      clip-path: polygon(0 100%, 50% 0, 100% 100%, 0% 100%);
      background-color: #E5E8E9; }
    .footer_top_btn p {
      margin: 0 auto;
      color: #E5E8E9;
      font-size: 1.4rem;
      line-height: 1.7rem;
      text-align: center;
      font-weight: 900; } }