@charset "UTF-8";
@font-face {
  font-family: "HiraginoGothic";
  src: url("../fonts/HiraginoKakuGothicPro-W3.otf");
}
@font-face {
  font-family: "HiraginoKakuGothicStdN-W8";
  src: url("../fonts/HiraginoKakuGothicStdN-W8.otf");
}
:root, html, body {
  --primary-black: rgb(26, 26, 26);
  --secondary-black: rgb(51,51,51);
  --primary-grey: rgb(179, 179, 179);
  --primary-blue: rgb(21 113 185);
  --secondary-blue: rgb(131 184 219);
  --tertiary-blue: rgb(0 113 188);
  --logo-blue: rgb(0 163 219);
  --base-size-multiplier: 1px;
  --section-indent: calc(var(--base-size-multiplier) * 100);
  --section-dedent: calc(var(--base-size-multiplier) * -100);
  --content-indent: calc(var(--base-size-multiplier) * 50);
  --gap-xs: calc(var(--base-size-multiplier) * 10);
  --gap-s: calc(var(--base-size-multiplier) * 14);
  --gap-m: calc(var(--base-size-multiplier) * 20);
  --gap-l: calc(var(--base-size-multiplier) * 40);
  --gap-xl: calc(var(--base-size-multiplier) * 60);
  --font-english: "sans-serif";
  --font-w8: "HiraginoKakuGothicStdN-W8";
  position: relative;
  width: 100vw;
  margin: 0;
  padding: 0;
  font-family: "HiraginoGothic", sans-serif;
  font-size: 20px;
  color: var(--secondary-black);
}
:root h1, :root h2, :root h3, :root h4, :root h5, html h1, html h2, html h3, html h4, html h5, body h1, body h2, body h3, body h4, body h5 {
  color: var(--primary-black);
}
@media screen and (max-width: 1920px) {
  :root, html, body {
    font-size: 18px;
    --base-size-multiplier: 0.9px;
  }
}
@media screen and (max-width: 1200px) {
  :root, html, body {
    font-size: 16px;
    --base-size-multiplier: 0.6px;
  }
}
@media screen and (max-width: 900px) {
  :root, html, body {
    font-size: 14px;
    --base-size-multiplier: 0.4px;
  }
}
@media screen and (max-width: 600px) {
  :root, html, body {
    font-size: 12px;
    --base-size-multiplier: 0.3px;
  }
}

body {
  overflow-x: hidden;
}

* {
  box-sizing: border-box;
}

.section-dedented {
  margin-left: calc(-1 * var(--section-indent));
  margin-right: calc(-1 * var(--section-indent));
}

.logo {
  background: url("../images/logo.png") no-repeat center;
  background-size: contain;
  width: 80px;
  height: 80px;
}
@media screen and (max-width: 900px) {
  .logo {
    width: 60px;
    height: 60px;
  }
}

.bg-shape {
  background-size: contain;
  position: absolute;
  width: 100vw;
  height: 2500px;
  left: 0;
  right: 0;
  z-index: -1;
}

a {
  color: black;
  text-decoration: none;
  position: relative;
}
a a:visited {
  color: black;
}
a:hover, a a:active {
  text-decoration: none;
}

@keyframes throb {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.2);
  }
}
#main-header {
  font-family: var(--font-w8), sans-serif;
  background-image: url("../images/bg-shape-header.svg");
  background-repeat: no-repeat;
  background-position-x: var(--shape-left);
  background-size: contain;
  color: white;
  position: relative;
  height: var(--header-height);
  min-height: var(--header-height-min);
  --nav-width: 13.25rem;
  --nav-left: calc(2 * var(--gap-xl));
  --nav-height: 66vh;
  --header-height: 100vh;
  --header-height-min: 650px;
  --shape-left: calc(50vw - 200*var(--shape-yscale));
  --shape-yscale: calc(var(--header-height)/836);
  --mask-w: calc(3000 * var(--shape-yscale));
  --half-shape-width: calc(500 * var(--shape-yscale)) ;
}
#main-header::before {
  background-color: white;
  height: var(--header-height);
  position: absolute;
  min-height: 650px;
  top: 0;
  left: 0;
  width: 100%;
  z-index: -3;
  content: "";
}
#main-header .header-bg-left {
  background: url("../images/top-left-welding.jpg") no-repeat;
  background-size: cover;
  background-position: right bottom;
  width: 66vw;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  mask-image: url("../images/bg-shape-header-left-mask.svg");
  mask-position: calc(var(--shape-left) + 2 * var(--half-shape-width) - var(--mask-w)) 0;
  mask-size: var(--mask-w) 100vh;
}
#main-header .splash {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background: var(--primary-blue);
  z-index: 1;
  opacity: 0;
  transition: opacity 0.5s ease-out 1s;
  pointer-events: none;
}
#main-header .header-showcase-image {
  width: 50vw;
  height: 100%;
  position: absolute;
  background-size: cover;
  right: 0;
  top: 0;
  z-index: -2;
  counter-increment: showcase-img;
  opacity: 0;
  transition: opacity 800ms linear;
}
#main-header .header-showcase-image:first-child {
  opacity: 1;
}
#main-header .brand {
  font-family: var(--font-w8), sans-serif;
  position: absolute;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  row-gap: var(--gap-m);
  height: 25%;
  --brand-width: 500px;
  width: var(--brand-width);
  top: 0;
  left: calc(var(--nav-left) + 0.5 * var(--nav-width) - 0.5 * var(--brand-width));
  z-index: 2;
  transition: transform 1s ease-in, top 0.3s ease-out 0.7s, left 0.3s ease-out 0.7s;
}
#main-header .brand .logo {
  width: 150px;
  height: 150px;
  animation: none;
}
#main-header .brand .company-name {
  font-size: 1.5rem;
  font-weight: bold;
}
#main-header.startup .brand {
  transform: scale(1.5);
  top: calc(50vh - 12.5%);
  left: calc(50vw - 0.5 * var(--brand-width));
}
#main-header.startup .brand .logo {
  animation: throb alternate 1s ease-out infinite;
}
#main-header.startup .splash {
  opacity: 1;
}
#main-header nav {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  min-height: 200px;
  position: absolute;
  bottom: 0;
  left: var(--nav-left);
  height: var(--nav-height);
  width: var(--nav-width);
  --nav-top-margin: calc(var(--gap-l) * 0.875);
  --nav-link-font-size: 1.3rem;
  --nav-link-padding: 4px;
  --nav-row-gap: calc((var(--nav-height) - var(--nav-top-margin) - (var(--nav-link-font-size) + 2*var(--nav-link-padding)) * 6)/6);
}
#main-header nav .link-container {
  border-left: 1px solid rgba(255, 255, 255, 0.9);
  display: flex;
  flex-direction: column;
  margin-left: calc(0.8 * var(--gap-l));
  margin-top: var(--nav-top-margin);
  row-gap: var(--nav-row-gap);
  height: calc(100% - 35px);
  width: calc(100% - 20px);
}
#main-header nav a {
  color: white;
  display: block;
  border-left-style: solid;
  border-left-width: 2px;
  border-left-color: rgba(255, 255, 255, 0);
  font-size: 1.3rem;
  font-weight: bold;
  padding-left: var(--gap-l);
  padding-top: var(--nav-link-padding);
  padding-bottom: var(--nav-link-padding);
  transition: border-left-color 0.3s ease-out;
  line-height: 1;
}
#main-header nav a:hover {
  border-left-color: rgba(255, 255, 255, 0.9);
}
#main-header nav a::after {
  display: none;
}
#main-header .banner {
  font-family: var(--font-w8), sans-serif;
  height: 100%;
  display: flex;
  text-align: center;
  flex-direction: column;
  justify-content: center;
  row-gap: var(--gap-m);
}
#main-header .banner .field {
  font-size: 1rem;
  filter: drop-shadow(0px 0px 3px lightgray);
  word-break: keep-all;
}
#main-header .banner .field .break {
  display: none;
}
#main-header .banner .slogan {
  font-size: 4rem;
  letter-spacing: 6px;
  filter: drop-shadow(0px 0px 10px gray);
}
@media screen and (max-aspect-ratio: 1.225) {
  #main-header {
    background-size: cover;
  }
}
@media screen and (max-width: 1920px) {
  #main-header {
    --nav-left: 6.5vw;
  }
}
@media screen and (max-width: 1600px) {
  #main-header {
    --nav-left: 6.5vw;
  }
  #main-header nav {
    --nav-height: 45vh;
  }
}
@media screen and (max-width: 1200px) {
  #main-header {
    --nav-left: 3vw;
    --nav-width: 12.25rem;
  }
  #main-header .banner .field {
    font-size: 1.5rem;
  }
  #main-header .banner .slogan {
    font-size: 3.2rem;
  }
}
@media screen and (max-width: 900px) {
  #main-header {
    --nav-left: 0;
    --nav-width: 11rem;
    --nav-height: 40vh;
  }
}
@media screen and (max-width: 600px) {
  #main-header {
    background: none;
  }
  #main-header .header-bg-left {
    mask-image: none;
    opacity: 0;
  }
  #main-header .header-showcase-image {
    width: 100vw;
  }
  #main-header ::before {
    content: none;
  }
  #main-header .brand {
    width: 100vw;
  }
  #main-header .brand .logo {
    width: 80px;
    height: 80px;
  }
  #main-header .brand .company-name {
    font-size: 2rem;
  }
  #main-header .banner .field {
    font-size: 1.5rem;
  }
  #main-header .banner .field .break {
    display: block;
  }
  #main-header .banner .field .separator {
    display: none;
  }
  #main-header .banner .slogan {
    font-size: 3rem;
  }
  #main-header nav {
    display: none;
  }
  #main-header.startup .brand {
    left: auto;
  }
}

#floating-header {
  background: white;
  position: sticky;
  z-index: 10;
  top: 0;
  display: grid;
  grid-template-columns: 350px 1fr 350px;
  place-items: center;
  place-content: center;
  opacity: 100%;
  transition: opacity 500ms ease-in;
  filter: drop-shadow(0 1px 5px lightgray);
  margin-bottom: calc(-1 * var(--gap-l));
}
#floating-header.invisible {
  opacity: 0;
}
#floating-header .brand {
  font-weight: bold;
  display: flex;
  align-items: center;
  line-height: 35px;
  margin: var(--gap-m);
}
#floating-header .brand .logo {
  margin-right: 10px;
}
#floating-header .brand .name {
  font-size: larger;
}
@media screen and (max-height: 1080px) {
  #floating-header .brand {
    margin: var(--gap-xs);
  }
}
#floating-header nav {
  display: flex;
  justify-content: space-evenly;
  list-style-type: none;
  margin-top: 30px;
  padding-left: calc(var(--section-indent) + var(--content-indent));
  padding-right: calc(var(--section-indent) + var(--content-indent));
  margin-bottom: 30px;
  padding: 0;
  width: 100%;
}
#floating-header nav a::after {
  position: absolute;
  left: 0;
  content: "";
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--logo-blue) 20%, var(--logo-blue) 80%, transparent);
  bottom: -5px;
  transform: translateX(50%) scale(0, 1) translateX(-50%);
  transform-origin: left top;
  transition: transform 0.3s;
}
#floating-header nav a:hover::after {
  transform: translateX(50%) scale(1, 1) translateX(-50%);
}
#floating-header .otoiawase {
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(90deg, #bad9f1, #005b97);
  color: white;
  font-weight: bold;
  border-radius: 30px;
  width: 200px;
  height: 60px;
}
#floating-header .otoiawase:hover {
  transform: scale(1.05);
}
#floating-header #hamburger-trigger {
  display: none;
  cursor: pointer;
}
@media screen and (max-width: 1200px) {
  #floating-header {
    grid-template-columns: 200px 1fr 200px;
  }
  #floating-header .brand .details {
    display: none;
  }
  #floating-header .otoiawase {
    border-radius: 25px;
    height: 50px;
    width: 180px;
  }
}
@media screen and (max-width: 900px) {
  #floating-header {
    grid-template-columns: 140px 1fr 160px;
  }
  #floating-header .otoiawase {
    border-radius: 20px;
    height: 40px;
    width: 140px;
  }
}
@media screen and (max-width: 600px) {
  #floating-header {
    grid-template-columns: 75px 1fr 75px;
  }
  #floating-header .otoiawase {
    border-radius: 17px;
    height: 34px;
    width: 120px;
  }
  #floating-header nav {
    display: none;
  }
  #floating-header #hamburger-trigger {
    display: block;
    width: var(--line-size);
    height: var(--line-size);
    position: relative;
    margin: 20px 20px;
    --line-size: 32px;
    --half-line-size: calc(var(--line-size) / 2);
  }
  #floating-header #hamburger-trigger div {
    position: absolute;
    width: var(--line-size);
    height: 0.5px;
    background: var(--primary-blue);
    transform-origin: left top;
    transition: opacity 0.5s linear, transform 0.5s linear;
  }
  #floating-header #hamburger-trigger .line-top {
    transform: translateY(calc(0.3 * var(--half-line-size)));
  }
  #floating-header #hamburger-trigger .line-mid {
    transform: translateY(var(--half-line-size));
  }
  #floating-header #hamburger-trigger .line-bottom {
    transform: translateY(calc(0.85 * var(--line-size)));
  }
  #floating-header.open #hamburger-trigger .line-top {
    transform: translate(var(--half-line-size), var(--half-line-size)) rotate(45deg) translateX(calc(-1 * var(--half-line-size)));
  }
  #floating-header.open #hamburger-trigger .line-mid {
    opacity: 0;
  }
  #floating-header.open #hamburger-trigger .line-bottom {
    transform: translate(var(--half-line-size), var(--half-line-size)) rotate(-45deg) translateX(calc(-1 * var(--half-line-size)));
  }
  #floating-header.open nav {
    display: flex;
    position: absolute;
    top: 100%;
    height: calc(100vh - 100%);
    width: 100vw;
    background: white;
    margin: 0;
    flex-direction: column;
    row-gap: calc(2 * var(--gap-xl));
    justify-content: flex-start;
    font-size: 2rem;
    padding-top: calc(4 * var(--gap-xl));
    padding-left: calc(2 * var(--gap-xl));
  }
}

#footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: var(--gap-xl);
  padding-bottom: var(--gap-xl);
}
#footer .brand {
  font-weight: bold;
  display: flex;
  align-items: center;
  line-height: 35px;
}
#footer .brand .logo {
  margin-right: 10px;
}
#footer .brand .chiiba-kun {
  background: url("../images/SDGs/チーバくん_transparentBG_withChiba.png") no-repeat;
  display: block;
  width: 80px;
  height: 90px;
  background-size: contain;
  margin-left: var(--gap-m);
}
@media screen and (max-width: 900px) {
  #footer .brand .chiiba-kun {
    width: 60px;
    height: 70px;
  }
}
#footer .brand .name {
  font-size: larger;
}
#footer ul.sitemap {
  display: flex;
  justify-content: space-around;
  list-style-type: none;
  margin-top: calc(var(--gap-xs) + var(--gap-m));
  padding-left: calc(var(--section-indent) + var(--content-indent));
  padding-right: calc(var(--section-indent) + var(--content-indent));
  margin-top: calc(var(--gap-xs) + var(--gap-m));
  padding: 0;
  width: 100%;
}
#footer ul.sitemap li a::after {
  position: absolute;
  left: 0;
  content: "";
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--logo-blue) 20%, var(--logo-blue) 80%, transparent);
  bottom: -5px;
  transform: translateX(50%) scale(0, 1) translateX(-50%);
  transform-origin: left top;
  transition: transform 0.3s;
}
#footer ul.sitemap li a:hover::after {
  transform: translateX(50%) scale(1, 1) translateX(-50%);
}
#footer .copyright {
  color: grey;
  font-size: 13px;
  margin-bottom: 5px;
}

.scroller {
  display: flex;
}
.scroller .slide {
  flex-shrink: 0;
}
.scroller .slide img {
  object-fit: cover;
}

.anim-grow {
  opacity: 0;
  transform: scale(0.8);
}
.anim-grow.animated {
  animation: grow 1s ease-out forwards;
}

.anim-slide-up {
  transform: translate(-5px, 20px);
  transition: transform 0.5s linear;
}
.anim-slide-up.animated {
  transform: translate(0px, 0px);
}

.anim-unblur {
  filter: blur(10px);
  transition: filter 0.8s ease-in-out;
}
.anim-unblur.animated {
  filter: blur(0px);
}

.anim-slide-in-left {
  opacity: 0;
}
.anim-slide-in-left.animated {
  opacity: 1;
  animation: slide-in-left 1s ease-out forwards;
}

.anim-slide-in-right {
  opacity: 0;
  position: relative;
}
.anim-slide-in-right.animated {
  opacity: 1;
  animation: slide-in-right 1s ease-out forwards;
}

@keyframes slide-in-left {
  from {
    transform: translateX(100vw);
    visibility: visible;
  }
  to {
    transform: translateX(0vw);
    visibility: visible;
  }
}
@keyframes slide-in-right {
  from {
    right: 100vw;
    visibility: visible;
  }
  to {
    right: 0;
    visibility: visible;
  }
}
@keyframes grow {
  100% {
    transform: scale(1);
    opacity: 100%;
  }
}
.parallax-img {
  object-fit: cover;
}

.grey-bg {
  background: rgb(242, 242, 242);
}

.indented-content {
  padding-left: var(--content-indent);
  padding-right: var(--content-indent);
}

main > section {
  padding-left: var(--section-indent);
  padding-right: var(--section-indent);
  padding-top: var(--gap-xl);
  padding-bottom: var(--gap-xl);
}
main > section header h1 {
  font-size: 4rem;
  font-family: var(--font-w8);
  letter-spacing: 1.5px;
  margin-bottom: 8px;
}
main > section header h2 {
  font-size: 1.2rem;
  color: var(--primary-blue) !important;
  margin-top: var(--gap-xs);
  margin-bottom: var(--gap-l);
}
main > section header h2:before {
  content: "";
  display: inline-block;
  width: 60px;
  height: 1px;
  background: var(--secondary-blue);
  margin-bottom: 7px;
  margin-right: 10px;
  margin-left: -4px;
}
@media screen and (max-width: 600px) {
  main > section header h2:before {
    width: 50px;
  }
}

/*# sourceMappingURL=common.css.map */