@charset "UTF-8";

/* common */
:root {
  --shadow-def: 2px 2px 1px rgba(0, 0, 0, .9);
  --pc-padding-inline: min(260px, 13.54vw);
  --sp-padding-inline: 30px;
  --content-width: 1400px;
  --pc-def-size: clamp(14px, 1.14vw, 22px);
  --sp-def-size: clamp(11px, 3.16vw, 14px);
}

body.is-fixed {
  position: fixed;
  left: 0;
  width: 100%;
  height: 100%;
}

/* header */
.l-header {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  width: 100%;
  padding-block: 25px;
  padding-inline: var(--pc-padding-inline);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 10;
  transition: all .3s;
}

.l-header.is-content {
  background-color: rgba(0, 0, 0, .6);
}

.header-logo {
  display: block;
  width: 64px;
  height: auto;
  line-height: 1;
}
.header-logo img {
  object-fit: contain;
}

.header-nav-content {
  display: flex;
  align-items: center;
  justify-self: self-end;
  gap: 50px;
}

.header-menu-container {
  display: block;
}

.header-nav-list {
  display: flex;
  align-items: center;
  gap: clamp(20px, 2.4vw, 53px);
}

.header-nav-list >li a {
  color: #fff;
  font-size: clamp(14px, 1.04vw, 20px);
}

.header-menu-button {
  display: none;
  position: relative;
}
.header-menu-button span {
  display: block;
  width: 100%;
  height: 1px;
  background-color: #fff;
  position: absolute;
  transition: all .3s;
}
.header-menu-button span:nth-of-type(1) {
  top: 0;
}
.header-menu-button span:nth-of-type(2) {
  bottom: 0;
}

.header-menu-button.is-active span:nth-of-type(1) {
  top: 5px;
  transform: rotate(25deg);
}
.header-menu-button.is-active span:nth-of-type(2) {
  bottom: 4px;
  transform: rotate(-25deg);
}

@media screen and (max-width: 1200px) {
  .l-header {
    padding-inline: var(--sp-padding-inline);
  }
}

@media screen and (min-width: 769px) {
  .l-header:not(.is-content) .header-nav-list >li a {
    filter: drop-shadow(var(--shadow-def));
  }
}

@media (max-width: 768px) {
  .l-header {
    padding-inline: 18px;
    padding-block: 14px;
  }

  .header-logo {
    width: 44px;
  }

  .header-nav-list {
    display: block;
    padding-block: 46px;
  }

  .header-nav-list > li {
    border-bottom: 1px solid #fff;
  }

  .header-nav-list >li a {
    display: block;
    padding-block: 12px;
    padding-inline: 18px;
  }

  .header-menu-container {
    display: none;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .7);
    position: fixed;
    top: 0;
    left: 0;
  }

  .header-menu-button {
    display: block;
    width: 36px;
    height: 10px;
  }
}

@media (min-width: 769px) {
  .header-menu-container {
    display: block !important;
  }
}


/* main */
.main-container {
  background-image: url('../images/content_bg.webp');
  background-size: 100% auto;
  background-repeat: repeat-y;
}
/* - mv */
.mv-section {
  position: relative;
  height: auto;
}

.mv-heading-block {
  width: max-content;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  color: #fff;
  filter: drop-shadow(0 0 10px rgba(0, 0, 0, .9));
}

.mv-heading__sub {
  max-width: min(444px, 23.12vw);
  width: 100%;
  margin-inline: auto;
  padding-bottom: 55px;
}

.mv-heading-block__main {
  display: inline-flex;
  align-items: center;
  gap: 25px;
}

.mv-heading__main {
  max-width: clamp(129px, 14.84vw, 285px);
  font-weight: 400;
  letter-spacing: .1em;
}

.mv-heading__en {
  display: block;
  max-width: clamp(87px, 15.1vw, 290px);
  width: 100%;
}

.mv-swiper-container {
  position: relative;
  z-index: 1;
  height: 100svh;
}

.mv-swiper-container .swiper-wrapper {
  height: 100%;
}

.mv-swiper-container .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

@media (max-width: 768px) {
  .mv-heading__sub {
    max-width: max(160px, 35.46vw);
    padding-bottom: 18px;
  }

  .mv-heading-block__main {
    gap: 7px;
  }

  .mv-heading__main {
    max-width: clamp(129px, 22.93vw, 285px);
    gap: 5px;
  }

  .mv-heading__en {
    max-width: clamp(87px, 23.2vw, 285px);
  }
}

/* - hocho */
.hocho-section {
  padding-block: min(148px, 7.7vw) min(255px, 13.28vw);
}

.hocho-row__center {
  max-width: calc(var(--content-width) + (var(--pc-padding-inline) * 2));
  width: 100%;
  margin-inline: auto;
  padding-inline: var(--pc-padding-inline);
}

.hocho-heading__horizon {
  text-align: center;
  font-size: clamp(30px, 2.08vw, 40px);
  font-weight: 400;
}

.hocho-heading__vertical {
  writing-mode: vertical-rl;
  font-size: clamp(21px, 3.18vw, 70px);
  font-weight: 400;
  line-height: 1.8;
  letter-spacing: .15em;
}

.hocho-about-text {
  text-align: center;
  line-height: 2;
  font-size: var(--pc-def-size);
  margin-top: 70px;
}

.hocho-about-image {
  max-width: clamp(500px, 35.93vw, 690px);
  width: 100%;
  margin-inline: auto;
  margin-top: 80px;
}

.hocho-row-section {
  margin-top: min(157px, 8.17vw);
}

.hocho-row-section + .hocho-row-section {
  margin-top: min(290px, 15.1vw);
}

.hocho-row-inner {
  padding-inline: var(--pc-padding-inline);
}

.hocho-detail-image {
  max-width: 100%;
  height: auto;
  /* max-height: min(585px, 46.87vw); */
  overflow: hidden;
}

.hocho-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hocho-detail-block {
  margin-top: min(214px, 9.72vw);
  display: grid;
  grid-template-columns: auto auto;
  max-width: calc(var(--content-width) - 86px);
  width: 100%;
  gap: 35px min(323px, 14.68vw);
  justify-content: space-between;
}

.hocho-row-section .hocho-heading__vertical {
  grid-area: 1 / 2 / 2 / 3;
}

.hocho-detail-text {
  max-width: 700px;
  font-size: var(--pc-def-size);
  line-height: 2;
  padding-top: 16px;
}

.hocho-feature-block {
  margin-top: min(220px, 11.45vw);
}

.hocho-block-title {
  font-size: clamp(18px, 1.56vw, 30px);
}

.hocho-feature-image {
  max-width: min(1305px, 67.98vw);
  margin-top: 76px;
  margin-inline: auto;
}

.hocho-process-container {
  margin-top: min(288px, 15vw);
}

.hocho-process-swiper {
  margin-top: 30px;
  padding-left: var(--pc-padding-inline);
  padding-right: min(60px, 3.12vw);
}

.hocho-process-swiper .swiper-wrapper {
  display: grid;
  grid-template-columns: repeat(17, 1fr);
}

.hocho-process-item {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 3;
  gap: clamp(15px, .23vw, 30px);
  height: 100%;
}

.hocho-process-title {
  font-size: clamp(18px, 1.56vw, 30px);
  text-align: center;
  letter-spacing: .2em;
}

.hocho-process-detail {
  font-size: var(--pc-def-size);
  line-height: 1.81;
  flex-grow: 1;
}

.hocho-process-swiper-buttons {
  margin-top: min(100px, 5.2vw);
  display: flex;
  align-items: center;
  gap: 20px;
}

.hocho-process-swiper-button__prev,
.hocho-process-swiper-button__next {
  display: block;
  aspect-ratio: 17 / 3;
  width: clamp(56px, 5.88vw, 113px);
  height: auto;
  cursor: pointer;
  background-image: url('../images/swiper_arrow.png');
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
}
.hocho-process-swiper-button__prev {
  transform: scale(-1, 1);
}

.hocho-process-swiper-button__prev.is-disabled,
.hocho-process-swiper-button__next.is-disabled {
  opacity: .3;
  cursor: default;
}

@media screen and (min-width: 769px) {
  .hocho-row-section:nth-of-type(2n+1) .hocho-detail-image {
    padding-left: var(--pc-padding-inline);
  }
  .hocho-row-section:nth-of-type(2n) .hocho-detail-image {
    padding-right: var(--pc-padding-inline);
  }
}

@media screen and (max-width: 768px) {
  .hocho-row__center {
    padding-inline: var(--sp-padding-inline);
  }

  .hocho-about-text {
    font-size: var(--sp-def-size);
    letter-spacing: .02em;
    line-height: 2.21;
    margin-top: 27px;
  }

  .hocho-about-image {
    margin-top: 25px;
    max-width: min(690px, 67.5vw);
  }

  .hocho-section {
    padding-block: 48px 33px;
  }

  .hocho-heading__horizon {
    font-size: min(19px, 5.06vw, 40px);
  }

  .hocho-heading__vertical {
    writing-mode: horizontal-tb;
    font-size: clamp(21px, 5.83vw, 31px);
  }

  .hocho-row-section {
    margin-top: 71px;
    max-width: 100%;
  }

  .hocho-row-inner {
    padding-inline: 0;
  }

  .hocho-block-title {
    font-size: clamp(15px, 4vw, 20px);
  }

  .hocho-detail-image {
    max-height: 100%;
    aspect-ratio: 6 / 5;
  }

  .hocho-detail-block {
    max-width: 100%;
    grid-template-columns: auto;
    padding-inline: var(--sp-padding-inline);
    margin-top: 24px;
  }

  .hocho-row-section .hocho-heading__vertical {
    grid-area: auto;
  }

  .hocho-detail-text {
    max-width: 100%;
    padding-top: 0;
    font-size: var(--sp-def-size);
  }

  .hocho-feature-block {
    margin-top: 62px;
    padding-inline: var(--sp-padding-inline);
  }

  .hocho-feature-image {
    max-width: 100%;
  }

  .hocho-process-container .hocho-row-inner {
    padding-inline: var(--sp-padding-inline);
  }

  .hocho-process-swiper {
    padding-inline: var(--sp-padding-inline);
  }

  .hocho-process-item {
    gap: 13px;
  }

  .hocho-process-title {
    font-size: clamp(13px, 3.46vw, 20px);
  }

  .hocho-process-detail {
    font-size: var(--sp-def-size);
  }

  .hocho-process-swiper-button__prev,
  .hocho-process-swiper-button__next {
    width: max(36px, 9.6vw);
  }
}

/* - brand */
.brand-section {
  background-color: #000;
  padding-top: min(176px, 9.16vw);
}

.brand-heading {
  font-size: clamp(30px, 2.08vw, 40px);
  font-weight: 400;
  color: #fff;
  text-align: center;
  padding-bottom: min(124px, 6.45vw);
  letter-spacing: .2em;
}

.brand-row__top {
  padding-inline: min(60px, 3.12vw);
  padding-bottom: min(258px, 13.43vw);
}

.brand-row-inner {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: min(120px, 6.25vw);
  color: #fff;
}

.brand-row-text {
  font-size: var(--pc-def-size);
  line-height: 2;
}
@media screen and (max-width: 768px) {
  .brand-section {
    padding-top: clamp(20px, 5.33vw, 40px);
  }

  .brand-heading {
    padding-bottom: min(29px, 7.33vw);
    font-size: clamp(15px, 4vw, 22px);
  }

  .brand-row__top {
    display: grid;
    grid-template-rows: repeat(3, auto);
    padding-inline: 0;
  }

  .brand-row-inner {
    display: contents;
  }

  .brand-row__top .brand-row-image {
    grid-area: 1 / 1 / 2 / 2;
    margin-bottom: 36px;
    padding-inline: 6px;
  }

  .brand-row__top .brand-row-text {
    padding-inline: var(--sp-padding-inline);
  }

  .brand-row-text {
    font-size: var(--sp-def-size);
  }
}


/* - material */
.brand-material-section {
  background-color: #ccc;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.brand-material-detail {
  align-self: center;
  padding-inline: min(102px, 5.13vw);
  padding-block: 54px;
}

.brand-material-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.brand-material-section .brand-heading {
  color: #000;
  text-align: left;
  padding-bottom: min(80px, 4.16vw);
}

.brand-material-name {
  display: flex;
  align-items: baseline;
  gap: 20px;
  font-size: clamp(15px, 2.08vw, 40px);
}

.brand-material-name__en {
  font-size: clamp(13px, 1.04vw, 20px);
}

.brand-material-block {
  max-width: 600px;
}

.brand-material-about {
  margin-block: clamp(20px, 2.08vw, 40px);
  padding-block: clamp(14px, 1.45vw, 28px);
  position: relative;
  font-size: clamp(16px, 1.25vw, 24px);
}
.brand-material-about::before,
.brand-material-about::after {
  content: '';
  display: block;
  width: 100%;
  height: .5px;
  background-color: #000;
  position: absolute;
  left: 50%;
  transform: translateX(-50%) scale(1, .2);
}
.brand-material-about::before {
  top: 0;
}
.brand-material-about::after {
  bottom: 0;
}

@media screen and (max-width: 768px) {
  .brand-material-section {
    grid-template-columns: auto;
    padding-inline: var(--sp-padding-inline);
    padding-block: min(157px, 8.17vw) min(135px, 7.03vw);
  }

  .brand-material-detail {
    display: contents;
  }

  .brand-material-section .brand-heading {
    grid-area: 1 / 1 / 2 / 2;
    text-align: center;
    padding-bottom: min(80px, 6.4vw);
    font-size: clamp(15px, 4vw, 22px);
  }

  .brand-material-name {
    font-size: clamp(15px, 4vw, 30px);
    padding-top: min(23px, 6.08vw);
    gap: 5px;
  }

  .brand-material-name__en {
    font-size: clamp(11px, 2.93vw, 20px);
  }

  .brand-material-about {
    font-size: clamp(12px, 3.2vw, 16px);
  }
}

/* - feature */
.feature-section {
  padding-block: min(200px, 10.41vw) min(178px, 9.27vw);
  max-width: calc(var(--content-width) + (var(--pc-padding-inline)*2));
  padding-inline: var(--pc-padding-inline);
  margin-inline: auto;
}

.feature-heading {
  text-align: center;
  font-weight: 400;
  font-size: clamp(30px, 2.08vw, 40px);
  padding-bottom: clamp(66px, 7.13vw, 137px);
  letter-spacing: .2em;
}

.feature-products-list > li + li {
  margin-top: clamp(50px, 5.98vw, 115px);
}

.feature-product-block {
  display: grid;
  align-items: center;
  grid-template-columns: repeat(2, 1fr);
  gap: 34px 42px;
}

.feature-product-name {
  font-size: clamp(30px, 2.08vw, 40px);
}

.feature-usage {
  font-size: clamp(16px, 1.25vw, 24px);
  line-height: 1.2;
  padding-block: clamp(13px, 1.56vw, 30px);
  position: relative;
  margin-block: 32px;
}
.feature-usage::before,
.feature-usage::after {
  content: '';
  display: block;
  width: 100%;
  height: 1px;
  background-color: #000;
  position: absolute;
  left: 50%;
  transform: translateX(-50%) scale(1, .5);
}
.feature-usage::before {
  top: 0;
}
.feature-usage::after {
  bottom: 0;
}

.feature-detail {
  font-size: var(--pc-def-size);
  line-height: 2.09;
}

@media screen and (max-width: 768px) {
  .feature-section {
    max-width: 100%;
    padding-inline: var(--sp-padding-inline);
  }

  .feature-heading {
    font-size: clamp(15px, 4vw, 30px);
  }

  .feature-product-block {
    grid-template-columns: auto;
  }

  .feature-product-name {
    font-size: clamp(15px, 4vw, 30px);
  }

  .feature-usage {
    font-size: var(--sp-def-size);
    margin-block: 16px;
  }

  .feature-detail {
    font-size: clamp(11px, 2.93vw, 13px);
  }
}


/* - products-list */
.products-list-section {
  padding-block: min(214px, 11.09vw);
  padding-inline: var(--pc-padding-inline);
}

.products-list-heading {
  text-align: center;
  font-size: clamp(30px, 2.08vw, 40px);
  font-weight: 400;
  padding-bottom: 60px;
  letter-spacing: .2em;
}

.products-list-row {
  max-width: var(--content-width);
  margin-inline: auto;
}

.products-list-row + .products-list-row {
  margin-top: min(204px, 10.62vw);
}

.products-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: clamp(40px, 2.96vw, 57px) 30px;
  margin-top: min(43px, 2.23vw);
}

.products-list-category {
  font-size: clamp(18px, 1.56vw, 30px);
  padding-bottom: 17px;
  position: relative;
  letter-spacing: .2em;
}
.products-list-category::after {
  content: '';
  display: block;
  width: 100%;
  height: 1px;
  background-color: #000;
  transform: translateX(-50%) scale(1, .5);
  position: absolute;
  left: 50%;
  bottom: 0;
}

.product-link {
  display: grid;
  gap: 8px;
}

.product-link:hover .product-name,
.product-link:active .product-name {
  text-decoration-color: transparent;
}

.product-name {
  font-size: clamp(14px, 1.04vw, 20px);
  text-decoration: underline;
  transition: all .3s;
  padding-bottom: 8px;
}

.product-code {
  font-size: clamp(12px, .93vw, 18px);
}

.product-price {
  display: flex;
  align-items: baseline;
  font-size: clamp(20px, 1.4vw, 27px);
}

.product-price__unit {
  font-size: clamp(12px, .93vw, 18px);
}

@media screen and (max-width: 768px) {
  .products-list-section {
    padding-inline: var(--sp-padding-inline);
  }

  .products-list-heading {
    font-size: clamp(15px, 4vw, 30px);
  }

  .products-list {
    margin-top: 24px;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 20px;
  }

  .products-list-category {
    font-size: clamp(15px, 4vw, 30px);
    padding-bottom: 10px;
  }

  .product-link {
    gap: 3px;
  }

  .product-image {
    margin-bottom: 15px;
  }

  .product-name {
    padding-bottom: 0;
  }

  .product-code {
    font-size: clamp(10px, 2.66vw, 16px);
  }

  .product-price {
    font-size: clamp(14px, 3.73vw, 20px);
  }

  .product-price__unit {
    font-size: clamp(10px, 2.66vw, 16px);
  }
}

/* footer */
.l-footer {
  font-size: 12px;
  letter-spacing: .05em;
  text-align: center;
  padding: 24px 20px;
  background-color: #808080;
  color: #fff;
}

.l-footer small {
  font-size: 100%;
}


/* fadeIn */
.js-fade-in {
  opacity: 0;
  transition: all .5s;
  transform: translateY(30px);
}
.js-fade-in.is-fade {
  opacity: 1;
  transform: translateY(0);
}