html {
  font-size: 62.5%;
}

body {
  font-size: 1.6rem;
  font-family: 'Montserrat', 'Noto Sans JP', sans-serif;
  color: #333;
}

@media (max-width: 768px) {
  body {
    font-size: 1.4rem;
  }
}

img, svg {
  width: 100%;
  vertical-align: bottom;
}

a {
  text-decoration: none;
  display: inline-block;
}

a:hover {
  opacity: .7;
  transition: .3s;
}

button {
  background-color: transparent;
  border: none;
  cursor: pointer;
  outline: none;
  padding: 0;
  appearance: none;
}

section {
  padding: 60px 0;
}

@media (max-width: 768px) {
  section {
    padding: 40px 0;
  }
}

.flex-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.container {
  max-width: 1100px;
  padding: 0 30px;
  margin: 0 auto;
}

.section-title {
  font-size: 3.2rem;
  font-weight: bold;
  margin-bottom: 30px;
}

.link-btn {
  color: #fff;
  background-color: #000;
  width: 160px;
  line-height: 36px;
  font-size: 1.2rem;
  display: block;
  text-align: center;
  font-weight: bold;
  margin-top: 30px;
}

.gray-bg {
  background-color: #f2f2f2;
}

.lines {
  line-height: 2;
}

.header__logo {
  width: 260px;
  position: fixed;
  top: 38px;
  left: 4vw;
  z-index: 1;
}

@media (max-width: 768px) {
  .header__logo {
    width: 180px;
    top: 21px;
  }
}

.header__nav {
  font-weight: bold;
  font-size: 2rem;
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: 36.1vw;
  text-align: center;
  padding: 120px 0 0;
  background-color: rgba(34, 34, 34, 0.95);
  z-index: 2;
  transform: translateX(100%);
  opacity: 0;
  transition: transform .3s,opacity .3s;
}

@media (max-width: 768px) {
  .header__nav {
    width: 67.7vw;
  }
}

.header__nav-item {
  margin-bottom: 30px;
}

.header__nav-item:first-of-type {
  margin-bottom: 40px;
}

.header__nav-item:last-of-type {
  margin-bottom: 0;
}

.header__nav-item a {
  color: #fff;
  font-weight: bold;
}

.header .burger-btn {
  display: flex;
  align-items: center;
  position: fixed;
  top: 38px;
  right: 4vw;
  z-index: 3;
}

@media (max-width: 768px) {
  .header .burger-btn {
    top: 28px;
  }
}

.header .bar {
  display: block;
  background-color: #fff;
  height: 2px;
  width: 22px;
  border-radius: 1px;
}

.header .bar-top {
  transform: translateY(-4px);
  transition: transform .3s;
}

.header .bar-bottom {
  transform: translateY(4px);
  transition: transform .3s;
}

.header .burger-menu {
  display: block;
  font-size: 1rem;
  text-transform: uppercase;
  color: #fff;
  font-weight: bold;
  margin-left: 5px;
}

.header__logo.black svg path {
  fill: #333;
  transition: fill .3s;
}

.bar.cross.bar-top {
  transform: translateY(2px) rotate(30deg);
  transition: transform .3s;
}

.bar.cross.bar-mid {
  opacity: 0;
  transition: opacity .3s;
}

.bar.cross.bar-bottom {
  transform: translateY(-2px) rotate(-30deg);
  transition: transform .3s;
}

body.noscroll {
  overflow: hidden;
}

.header__nav.open {
  transform: translateX(0);
  opacity: 1;
  transition: transform .3s,opacity .3s;
}

.burger-musk {
  display: none;
  height: 100vh;
  width: 100vw;
  position: fixed;
  top: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.burger-btn.black .bar {
  background-color: #333;
  transition: background-color .3s;
}

.burger-btn.black .burger-menu {
  color: #333;
  transition: color .3s;
}

.fv {
  height: 100vh;
}

.fv::after {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  right: 0;
  background-color: #222;
  width: 50%;
  height: 100%;
  z-index: -1;
}

.fv__wrapper {
  height: 86.5%;
  width: 76.4%;
  background-image: url(images/home_pc/the-honest-company-uM-WXMr0YXc-unsplash.png);
  background-size: cover;
  background-position: center 0;
  position: relative;
}

.fv__copy {
  position: absolute;
  top: 50%;
  right: 0;
  transform: translate(50%, -50%);
  color: #fff;
}

@media (max-width: 768px) {
  .fv__copy {
    right: -15%;
    transform: translate(0, -50%);
  }
}

.fv__copy .copy_jp {
  font-size: 2rem;
  margin-bottom: 4px;
}

@media (max-width: 768px) {
  .fv__copy .copy_jp {
    font-size: 1.6rem;
  }
}

.fv__copy .copy_company {
  font-size: 2rem;
  margin-bottom: 10px;
  font-weight: bold;
}

@media (max-width: 768px) {
  .fv__copy .copy_company {
    font-size: 1.6rem;
  }
}

.fv__copy .main-copy {
  font-size: 7.2rem;
  line-height: 1.2;
  font-weight: bold;
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .fv__copy .main-copy {
    font-size: 5.4rem;
  }
}

.about {
  padding-top: 120px;
  padding-bottom: 0px;
  position: relative;
}

@media (max-width: 768px) {
  .about {
    padding-top: 80px;
  }
}

.about__container {
  background-image: url(images/home_pc/skyline-4582510_1920.png);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  padding: 110px 0 110px 50px;
}

@media (max-width: 768px) {
  .about__container {
    padding: 50px 4vw;
  }
}

.about__wrapper {
  max-width: 590px;
  padding: 50px 30px;
  box-sizing: border-box;
  background-color: rgba(255, 255, 255, 0.95);
}

@media (max-width: 768px) {
  .about__wrapper {
    margin: 0 auto;
  }
}

.introduction {
  padding: 60px 0;
}

@media (max-width: 768px) {
  .introduction {
    padding: 40px 0;
  }
}

.introduction__container {
  max-width: 1100px;
  padding: 0 30px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .introduction__container {
    flex-direction: column;
    align-items: flex-start;
    padding: 0 4vw;
  }
}

.works {
  width: 47.3%;
}

@media (max-width: 768px) {
  .works {
    width: 520px;
    max-width: 100%;
  }
}

.works__wrapper img {
  margin-bottom: 30px;
}

.culture {
  width: 47.3%;
}

@media (max-width: 768px) {
  .culture {
    width: 520px;
    max-width: 100%;
  }
}

.culture__wrapper img {
  margin-bottom: 30px;
}

.topics__list {
  max-width: 700px;
}

.topics__list-item {
  padding-bottom: 12px;
  border-bottom: 1px solid #ddd;
  margin-bottom: 30px;
}

@media (max-width: 768px) {
  .topics__list-item {
    margin-bottom: 20px;
  }
}

.topics__date {
  color: #cecece;
  font-size: 1rem;
  font-weight: bold;
  line-height: 2;
}

.topics__title {
  color: #333;
  font-size: 1.4rem;
  font-weight: bold;
}

@media (max-width: 768px) {
  .topics__title {
    font-size: 1.2rem;
  }
}

.ml-auto {
  margin-left: auto;
}

@media (max-width: 768px) {
  .ml-auto {
    margin-left: 0;
  }
}

.contact {
  padding-bottom: 120px;
}

@media (max-width: 768px) {
  .contact {
    padding-bottom: 80px;
  }
}

@media (max-width: 768px) {
  .contact__container {
    flex-direction: column-reverse;
    align-items: flex-start;
    padding: 0 4vw;
  }
}

.contact__container img {
  width: 52.7%;
}

@media (max-width: 768px) {
  .contact__container img {
    width: 520px;
    max-width: 100%;
  }
}

.contact__wrapper {
  width: 40%;
}

@media (max-width: 768px) {
  .contact__wrapper {
    width: 440px;
    max-width: 100%;
    margin-top: 30px;
  }
}

.footer {
  line-height: 50px;
  background-color: #525252;
  text-align: center;
  color: #fff;
  font-size: 1rem;
}