/* top */
#top-usecase.fullwidth-bg-section::before {
  background-color: var(--color-white);
}

.l-top__cta.fullwidth-bg-section::before {
  background-color: var(--color-white);
}
/* Main Visual Section */
#main-visual-container {
  position: relative;
  width: 100%;
  height: 100%;
}
.main-visual {
  position: relative;
  min-height: 669px;
  overflow: hidden;
}

.main-visual-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  grid-template-rows: 335px 334px;
  height: 669px;
  gap: 0;
}

.main-visual-hero {
  grid-column: 1;
  grid-row: 1 / -1;
  position: relative;
  background: linear-gradient(rgba(51, 51, 51, 0.83), rgba(51, 51, 51, 0.83));
  background-blend-mode: multiply;
}

.main-visual-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.main-visual-hero:hover img {
  transform: scale(1.08);
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50px;
  transform: translateY(-50%);
  color: var(--color-white);
}
.visual-grid-item .hero-content {
  top: 0;
  left: 50px;
  transform: none;
  padding-top: 60px;
  box-sizing: border-box;
}
/* オーバーレイ */
.main-visual__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.3);
}

.hero-catch {
  background-color: #000;
  padding: 4px 15px;
  margin-bottom: 20px;
  display: inline-block;
}

.hero-catch-text {
  font-size: 22px;
  font-weight: 500;
  line-height: 1.2;
}

.hero-title {
  font-family: var(--font-latin);
  line-height: 1;
  margin-bottom: 40px;
  font-size: 6.688rem;
  font-weight: normal;
  color: var(--rgb255-255-255);
  text-align: left;
}

.hero-link {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-white);
  text-decoration: none;
  font-size: 24px;
  font-weight: bold;
}

.hero-link img {
  width: 34px;
  height: 34px;
}

.visual-grid-item {
  position: relative;
  overflow: hidden;
}

.visual-grid-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

.visual-grid-item:hover img {
  transform: scale(1.08);
}
.visual-grid-item .hero-catch-text {
  color: var(--color-white);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.2;
}
.visual-grid-item .hero-title {
  color: var(--color-white);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.333;
}
@media (max-width: 1400px) {.visual-grid-item .hero-title {font-size: 28px;}}

.visual-grid-item .hero-title.en {
  font-family: var(--font-latin);
  font-size: 53px;
  font-weight: 400;
  line-height: 1;
}
.visual-02 {
  grid-column: 2;
  grid-row: 1;
}

.visual-03 {
  grid-column: 3;
  grid-row: 1;
}

.visual-04 {
  grid-column: 2;
  grid-row: 2;
}

.visual-05 {
  grid-column: 3;
  grid-row: 2;
}

/* Topics Section */
.l-top__topics {
  /* position: absolute;
  bottom: -100px; */
  left: 5%;
  right: 5%;
  /* padding: 15px 60px; */
  display: flex;
  align-items: center;
  gap: 30px;
  width: 90%;
  min-height: 95px;
  z-index: 10;
}

.topics-title {
  color: var(--color-black);
  font-family: var(--font-latin);
  font-size: 24px;
  font-weight: 500;
  text-transform: uppercase;
  flex-shrink: 0;
  width: 92px;
}

.topics-item {
  display: flex;
  align-items: center;
  gap: 45px;
  font-size: 20px;
  flex: 1;
}

/* .topics-date {
  font-family: var(--font-latin);
  font-weight: 500;
  color: var(--color-dark);
  flex-shrink: 0;
  font-size: 20px;
} */

.topics-text {
  color: var(--color-dark);
  font-weight: 500;
  font-size: 20px;
  line-height: 1.2;
}
a:hover.topics-text {
  color: var(--color-dark);
  text-decoration: underline;
}
a:hover.no-link {
    text-decoration: none;
    opacity: unset;
}
/* Product Menu */
.product-menu {
  background-color: var(--color-light-gray);
  padding: 45px 30px;
  position: relative;
}

.product-menu-title {
  margin-bottom: 30px;
}

.product-menu-title h2 {
  font-size: 16px;
  font-weight: bold;
  color: var(--color-dark);
  position: relative;
  padding-bottom: 10px;
}

.product-menu-title h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 64px;
  height: 4px;
  background-color: var(--color-primary);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

.product-item {
  display: flex;
  align-items: center;
  gap: 15px;
  font-size: 20px;
  color: var(--color-dark);
}

.product-item img {
  width: 55px;
  height: 55px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.product-text {
  font-weight: 500;
}

/* Contact Panel */
.contact-panel {
  position: fixed;
  top: 50%;
  right: 30px;
  transform: translateY(-50%);
  background: linear-gradient(180deg, #004a9c, #000244);
  border-radius: 23px;
  width: 271px;
  padding: 20px;
  color: var(--color-white);
  z-index: 50;
}

.contact-panel-title {
  text-align: center;
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 15px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.31);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  color: var(--color-white);
}

.contact-item:first-child {
  border-top: none;
}

.contact-item img {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
}
.image-container {
  width: 100%;
  aspect-ratio: 16 / 9; /* 縦横比を固定 */
  overflow: hidden;
}
.responsive-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
/* 検索セクション */
.l-top__search {
  padding: 60px 30px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.l-top__search .search-section {
  background-color: var(--color-white);
  padding: 60px 50px;
  border-radius: 8px;
  margin-top: 30px;
}
.l-top__search .search-section .search-item-list {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 25px;
}
.l-top__search .search-section .search-item-list .search-item {
  display: flex;
  align-items: center;
  gap: 15px;
}
.l-top__search
  .search-section
  .search-item-list
  .search-item
  .search-item-image {
  /* width: 100px; */
  height: 100px;
  object-fit: cover;
}
.l-top__search
  .search-section
  .search-item-list
  .search-item
  .search-item-text {
  font-size: 16px;
  font-weight: 400;
  line-height: 2.625rem;
}
.l-top__search .search-section .search-column01 {
  margin-bottom: 20px;
}
.l-top__search .search-section form {
  display: flex;
  align-items: center;
  gap: 25px;
}
.l-top__search .search-section input {
  padding: 15px 10px;
  border-radius: 5px;
  border: 1px solid var(--color-black);
  background-color: var(--color-white);
  min-width: 280px;
}
.l-top__search .search-section input::placeholder {
  color: #cdd6dd;
  font-size: 16px;
}
.l-top__search .search-section .search-btn .form-btn-submit {
  width: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.l-top__search .search-section .search-btn button.form-btn-submit {
  background-color: var(--color-light-gray);
  border-radius: 33px;
  padding: 10px 20px;
  border: none;
  color: var(--color-black);
}

.l-top__search .search-section .search-btn button.form-btn-submit:hover {
  /*background-color: var(--color-primary);*/
  color: var(--color-white);
      background-color: #000;
}

.l-top__search .search-section .search-item-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 2.625rem;
  margin-bottom: 20px;
}
.l-top__search .search-section .search-btn button.form-btn-submit .icon {
  background-color: var(--color-black);
  background-repeat: no-repeat;
  background-position: center;
}
.l-top__search .search-section .search-btn button.form-btn-submit:hover .icon {
  background-color: var(--color-white);
}

/* News Section */
.l-top__news {
  padding: 60px 30px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.news-all-link {
  text-decoration: underline;
  font-size: 16px;
  line-height: 2.625rem;
  display: block;
  margin-bottom: 40px;
}
.news-all-link:hover {
  text-decoration: underline;
  color: var(--color-dark);
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.news-list__item {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--color-black);
  padding-bottom: 20px;
}
.news-item {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 20px;
  font-size: 20px;
  flex: 1;
}
.news-item__link:hover {
  text-decoration: underline;
  color: var(--color-dark);
}
.news-item-header {
  display: flex;
  align-items: center;
  gap: 10px;
}
.news-item__date {
  font-size: 24px;
  font-weight: 400;
  line-height: 1.2;
  font-family: var(--font-latin);
}
.news-item__tag {
  font-size: 16px;
}
.news-item__body {
  color: var(--color-dark);
  font-weight: 500;
  font-size: 20px;
  line-height: 1.2;
}
a:hover.news-item__body {
  color: var(--color-dark);
  text-decoration: underline;
}

@media (max-width: 1200px) {
  .main-visual-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    height: auto;
  }

  .main-visual {
    min-height: auto;
  }

  .main-visual-hero {
    grid-column: 1;
    grid-row: 1;
    height: 400px;
    height: unset;
    aspect-ratio: 2;
  }

  .visual-02 {
    grid-column: 1;
    grid-row: 2;
    height: 200px;
    display: none;
  }

  .visual-03 {
    grid-column: 1;
    grid-row: 2;
    height: 200px;
    display: none;
  }

  .visual-04 {
    grid-column: 1;
    grid-row: 3;
    height: 200px;
    display: none;
  }

  .visual-05 {
    grid-column: 1;
    grid-row: 3;
    height: 200px;
    display: none;
  }
  .visual-grid-item .hero-title {
    font-size: 24px;
  }
  .visual-grid-item .hero-title.en {
    font-size: 30px;
  }

  /* Create sub-grids for 2x2 layout */
  .visual-row-2 {
    grid-column: 1;
    grid-row: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    height: 200px;
  }

  .visual-row-3 {
    grid-column: 1;
    grid-row: 3;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    height: 200px;
  }

  .hero-title {
    font-size: 60px;
  }

  .hero-content {
    left: 30px;
  }

  .l-top__topics {
    position: relative;
    border-radius: 8px;
    gap: 20px;
    text-align: center;
    padding: 1rem;
    bottom: 0;
    /* margin-top: 30px; */
  }

  .topics-item {
    flex-direction: column;
    align-content: start;
    align-items: start;
    gap: 10px;
  }

  .contact-panel {
    transform: none;
    margin: 30px;
    width: auto;
  }
  .l-top__search .search-section form {
    flex-direction: column;
  }
  .l-top__search .search-section .search-item-list {
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 20px;
  }
  .home .c-heading {
    margin-bottom: 20px;
    padding-top: 20px;
  }
}

@media (max-width: 767px) {
  .main-visual-grid {
    grid-template-columns: 1fr;
    grid-template-rows: repeat(5, auto);
    height: auto;
  }

  .main-visual-hero {
    grid-column: 1;
    grid-row: 1;
    height: 300px;
    height: unset;
  }
  .hero-content {
    left: 20px;
  }
  .visual-grid-item .hero-content {
    position: absolute;
    top: 50%;
    left: 30px;
    transform: translateY(-50%);
    color: var(--color-white);
  }
  .visual-grid-item .hero-catch {
    margin-bottom: 10px;
  }
  .l-top__topics {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
    gap: 5px;
  }
  .topics-title {
    width: inherit;
    text-align: left;
  }
  .topics-text {
    font-size: 14px;
    text-align: left;
  }

  .product-menu {
    padding: 30px 20px;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }
  .visual-grid-item .hero-title,
  .visual-grid-item .hero-title.en {
    font-size: 24px;
  }
  .home .c-heading {
    margin-bottom: 10px;
    padding-top: 10px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 32px;
  }
  .hero-catch-text,
  .visual-grid-item .hero-catch-text {
    font-size: 15px;
  }
  .visual-grid-item .hero-content {
    left: 10px;
  }
  .visual-grid-item .hero-title,
  .visual-grid-item .hero-title.en {
    font-size: 20px;
  }
  .topics-title {
    font-size: 20px;
  }

  .topics-item {
    font-size: 0.875rem;
  }

  .product-item {
    font-size: 16px;
  }
}

/* News Section Responsive */
.l-top__news {
  padding: 60px 30px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.news-title {
  margin-bottom: 40px;
}

.news-title .b17 {
  font-size: 3.625rem;
  line-height: 4rem;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--color-dark);
}

.news-title .use-case {
  font-size: 1.438rem;
  line-height: 2.625rem;
  color: #7d7d7d;
}

.news-column {
  margin-bottom: 30px;
}

.group,
.group1,
.group2,
.group3 {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid #e0e0e0;
}

/* Additional Responsive Design for News, CTA, Footer */
@media (max-width: 1200px) {
  /* Footer */
  .footer-section {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  /* News Section */
  .l-top__news {
    padding: 40px 20px;
  }

  .news-title .b17 {
    font-size: 32px;
    line-height: 38px;
  }

  .news-title .use-case {
    font-size: 18px;
  }

  .group,
  .group1,
  .group2,
  .group3 {
    margin-bottom: 20px;
  }

  .itmediaonline {
    font-size: 16px !important;
    line-height: 1.5 !important;
  }
}

@media (max-width: 480px) {
  /* News Section */
  .news-title .b17 {
    font-size: 28px;
    line-height: 34px;
  }

  .news-title .use-case {
    font-size: 16px;
  }

  .itmediaonline {
    font-size: 14px !important;
    line-height: 1.4 !important;
  }
}