.engineering-body {
  font-family: "Sawarabi Gothic", sans-serif;
  font-style: normal;
  color: #000;
  background-color: #ffffff;
  background-image: linear-gradient(#e6e6e6 1px, transparent 1px), linear-gradient(90deg, #e6e6e6 1px, transparent 1px);
  background-size: 23px 23px;
}
.engineering-body.menu-lock {
  overflow: hidden;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
header.slide-header {
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  background: rgba(255, 255, 255, 0.75);
  -webkit-box-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
          box-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
  backdrop-filter: blur(20px);
}
header.is-white.slide-header {
  background: rgba(26, 26, 26, 0.75);
  -webkit-box-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
          box-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
}
header.is-white .logo {
  -webkit-filter: brightness(0) saturate(100%) invert(99%) sepia(97%) saturate(0%) hue-rotate(82deg) brightness(114%) contrast(100%);
          filter: brightness(0) saturate(100%) invert(99%) sepia(97%) saturate(0%) hue-rotate(82deg) brightness(114%) contrast(100%);
}
header.is-white p {
  color: #fff;
}
header.is-white .menu a {
  color: #fff;
}
header .inter {
  font-family: "Inter", sans-serif;
  font-optical-sizing: auto;
  font-weight: 400;
  font-style: normal;
}
header .header_inner {
  width: 100%;
  max-width: 1366px;
  margin: 0 auto 0 auto;
  padding: 30px 60px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}
header .header_left {
  width: 100%;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: 34px;
}
header .logo {
  width: 100%;
  max-width: 116px;
}
header .engineering {
  line-height: 1;
  letter-spacing: 0.06em;
  font-size: 16px;
}
header .menu {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: end;
      -ms-flex-pack: end;
          justify-content: flex-end;
  width: 100%;
  -webkit-box-flex: 0;
      -ms-flex: 0 0 70%;
          flex: 0 0 70%;
}
header .menu a {
  line-height: 1;
  font-size: 16px;
  font-weight: 400;
  color: #000;
}
header .menu a:not(:first-child) {
  margin-left: 33px;
}
header .menu a.contact {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  width: 100%;
  max-width: 168px;
  height: 25px;
  color: #fff;
  background-color: #0a32ff;
  margin-left: 36px;
}
header .hamburger_menu {
  display: none;
}
header #sp-menu {
  display: none;
}

@media (min-width: 1px) and (max-width: 1400px) {
  header .header_inner {
    padding: 30px 58px;
  }
  header .menu a {
    font-size: 15px;
  }
  header .menu a:not(:first-child) {
    margin-left: 20px;
  }
}
@media (min-width: 1px) and (max-width: 1020px) {
  header .header_inner {
    padding: 30px 35px;
  }
  header .header_left {
    gap: 15px;
  }
  header .engineering {
    font-size: 14px;
  }
  header .menu a {
    font-size: 12px;
  }
  header .menu a:not(:first-child) {
    margin-left: 10px;
  }
  header .menu a.contact {
    max-width: 120px;
    height: 20px;
    margin-left: 20px;
  }
}
@media (min-width: 1px) and (max-width: 767px) {
  header.is-white #sp-menu .logo {
    -webkit-filter: unset;
            filter: unset;
  }
  header.is-white #sp-menu .engineering {
    color: #000;
  }
  header.is-white #sp-menu .menu_btn span {
    background-color: #000;
  }
  header.is-white .menu_btn span {
    background-color: #fff;
  }
  header .header_inner {
    padding: 25px 20px 25px 20px;
  }
  header .header_inner.active {
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    right: 0;
    margin: 0 auto 0 auto;
    padding: 25px 20px 25px 20px;
    z-index: 10;
    background: rgba(255, 255, 255, 0.75);
    -webkit-box-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
            box-shadow: 0 8px 32px rgba(31, 38, 135, 0.12);
    backdrop-filter: blur(20px);
  }
  header .logo {
    max-width: 90px;
  }
  header .engineering {
    font-size: 12px;
  }
  header .menu {
    display: none;
  }
  header .hamburger_menu {
    width: 65px;
    height: 65px;
    cursor: pointer;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    position: absolute;
    right: 0;
  }
  header .hamburger_menu.in-hamb {
    top: 0;
  }
  header .menu_btn {
    position: relative;
    display: inline-block;
    width: 24px;
    height: 12px;
    -webkit-transition: all 0.5s;
    transition: all 0.5s;
  }
  header .menu_btn span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: #000;
    border-radius: 4px;
    display: inline-block;
    -webkit-transition: all 0.5s;
    transition: all 0.5s;
  }
  header .menu_btn span:nth-of-type(1) {
    top: -1px;
  }
  header .menu_btn span:nth-of-type(2) {
    top: 0;
    bottom: 0;
    margin: auto;
  }
  header .menu_btn span:nth-of-type(3) {
    bottom: -1px;
  }
  header .menu_btn.active {
    height: 18px;
  }
  header .menu_btn.active span:nth-of-type(1) {
    -webkit-transform: translateY(10px) rotate(-150deg);
            transform: translateY(10px) rotate(-150deg);
  }
  header .menu_btn.active span:nth-of-type(2) {
    opacity: 0;
  }
  header .menu_btn.active span:nth-of-type(3) {
    -webkit-transform: translateY(-9px) rotate(150deg);
            transform: translateY(-9px) rotate(150deg);
  }
  header #sp-menu {
    width: 80%;
    height: 100vh;
    background-color: #fff;
    -webkit-transition: 0.5s all;
    transition: 0.5s all;
    display: block;
    position: fixed;
    top: 0;
    right: -100%;
    z-index: 100;
    background-color: #ffffff;
    background-image: linear-gradient(#e6e6e6 1px, transparent 1px), linear-gradient(90deg, #e6e6e6 1px, transparent 1px);
    background-size: 23px 23px;
    -webkit-box-shadow: -18px 0 18px rgba(0, 0, 0, 0.2);
            box-shadow: -18px 0 18px rgba(0, 0, 0, 0.2);
  }
  header #sp-menu.active {
    right: 0;
  }
  header .sp-menu-inner {
    height: 100%;
    padding: 25px 23px 30px 23px;
    overflow-y: scroll;
  }
  header .sp-menu-top {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    gap: 16px;
    margin-bottom: 95px;
  }
  header .sp-menu-list {
    margin-bottom: 60px;
  }
  header .sp-menu-list a {
    font-size: 20px;
    letter-spacing: 0.06em;
    font-weight: 400;
    color: #000;
    display: block;
  }
  header .sp-menu-list a:not(:last-child) {
    margin-bottom: 30px;
  }
  header .sp-menu-list a.contact {
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-pack: center;
        -ms-flex-pack: center;
            justify-content: center;
    -webkit-box-align: center;
        -ms-flex-align: center;
            align-items: center;
    width: 100%;
    max-width: 143px;
    height: 29px;
    color: #fff;
    background-color: #0a32ff;
  }
  #page.active {
    padding-top: 74px;
  }
}