:root {
  --color-main-blue: #131b3f;
  --color-normal-blue: #1c468d;
  --color-white: #ffffff;
  --color-black: #000000;
  --color-light-gray: #e5e7eb;
  --color-light-sky: #e8eef8;
}

.introduction-record-section .post-list {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 32px 24px;
  width: 100%;
  margin: 0;
  margin-bottom: 60px;
}

.introduction-record-section .post-list>.post-item {
  background-color: #ffffff;
  box-shadow: 0 4px 20px rgb(0 0 0 / 8%);
  position: relative;
  padding: 12px;
}

.post-item a.full-link-cover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  text-indent: -9999px;
  /* テキストは非表示 */
}

.introduction-record-section .post-list>.post-item:hover {
  opacity: .8;
}

.introduction-record-section .post-list>.post-item a img {
  width: 80%;
  margin: 0 10%;
}

/* 企業名 */
.post-item-title {
  /* margin-top: 18px; */
  margin-bottom: 0;
}

.post-meta-desc {
  font-size: 14px;
  font-weight: 500;
  font-family: "Hiragino Sans", "Hiragino Kaku Gothic ProN", Roboto, "Droid Sans", "Yu Gothic", Meiryo, "Meiryo UI", sans-serif;
  line-height: 24px;
  margin: 16px 0;
  word-wrap: break-word;
  overflow-wrap: anywhere;
  word-break: break-all;
}

.post-item-date {
  width: fit-content;
}

.intro-category {
  background-color: #c0caed;
  border-radius: 4px !important;
  font-weight: 500;
  line-height: 1.8;
  margin-bottom: 0;
}

.intro-category:hover,
.intro-category a:hover {
  background-color: #121b3d;
  color: #fff !important;
  border-radius: 4px !important;
}

.intro-category a {
  width: 100%;
  display: inline-block;
  padding: 0 12px;
  font-size: 14px;
  font-weight: 600;
}

/* ページネーション */
.introduction-record-pagination {
  justify-content: center;
  font-size: 2rem;
  padding-bottom: 120px;
}

.introduction-record-pagination .num-pagination>span,
.introduction-record-pagination .num-pagination>a {
  padding: 0.5rem 1.5rem 0.75rem;
  text-decoration: underline;
}

.btn-pagination a {
  padding: 0.5rem 1.5rem 0.75rem;
}

.introduction-record-pagination .num-pagination>.current {
  background-color: #000000;
  color: #ffffff;
  text-decoration: none;
}

@media (max-width: 969px) {
  .introduction-record-section .post-list {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
}

/* ===== Breadcrumb ===== */
.main_case_studies {
  padding-top: 64px;
}

.breadcrumb-bar {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  width: 100%;
  height: 64px;
  align-items: center;
  background-color: #fff;
}

.breadcrumb-nav {
  width: 100%;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  overflow-wrap: break-word;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb-link {
  font-family: "Noto Sans JP", Helvetica, sans-serif;
  font-weight: 300;
  font-size: 14px;
  color: #000;
  text-decoration: none;
  transition: color 0.15s ease;
}

.breadcrumb-link:hover {
  color: #131b3f;
}

.breadcrumb-separator .breadcrumb-chevron {
  width: 12px;
  height: 24px;
  fill: currentColor;
}

.breadcrumb-current {
  font-family: "Noto Sans JP", Helvetica, sans-serif;
  font-weight: 400;
  font-size: 14px;
  color: #000;
}

@media (min-width: 640px) {
  .breadcrumb-list {
    gap: 10px;
  }
}

@media (min-width: 768px) {
  .breadcrumb-bar {
    padding: 0 8px;
  }
}

@media (min-width: 1280px) {
  .breadcrumb-bar {
    padding: 0;
  }
}

.case_studies-column-hero,
.case_studies-single-column-hero {
  width: 100%;
  height: 240px;
  overflow: hidden;
  position: relative;
}

.case_studies-column-hero .column-hero-pc {
  width: 100%;
  height: 240px;
  overflow: hidden;
  position: relative;
  background-color: #f0f0f0;
  background-image: url(../img/column_hero_pc.webp);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.case_studies-column-hero .column-hero-recruit-pc {
  width: 100%;
  height: 240px;
  overflow: hidden;
  position: relative;
  background-color: #f0f0f0;
  background-image: url(../img/column_recruit_hero_pc.webp);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.case_studies-column-hero .case_studies-column-hero-pc {
  width: 100%;
  height: 240px;
  overflow: hidden;
  position: relative;
  background-color: #f0f0f0;
  background-image: url(../img/introduction/hero-pc.webp);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.case_studies-single-column-hero .case_studies-single-column-hero-pc {
  width: 100%;
  height: 240px;
  overflow: hidden;
  position: relative;
  background-color: #f0f0f0;
  background-image: url(../img/introduction/hero-pc_sigle.webp);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.case_studies-column-hero .case_studies-column-hero-sp {
  display: none;
}

.case_studies-single-column-hero .case_studies-single-column-hero-sp {
  display: none;
}

.case_studies-column-hero .case_studies-column-hero-text {
  width: 100%;
  position: absolute;
  bottom: -28px;
  inset-inline: calc(var(--spacing)*0);
}

.case_studies-column-hero .case_studies-column-hero-text-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.case_studies-column-hero-text-title {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 40px;
  color: #fff;
  line-height: 1;
  font-weight: 500;
}

.case_studies-column-hero-text-en_title {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 200px;
  color: #fff;
  line-height: 1;
  font-weight: 500;
}

.case_studies-single-column-hero .case_studies-single-column-hero-text {
  width: 100%;
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case_studies-single-column-hero .case_studies-single-column-hero-text-inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.case_studies-single-column-hero h1.case_studies-single-column-hero-text-title {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 400;
  font-size: 60px;
  color: #fff;
  text-align: center;
  letter-spacing: 4px;
}

.case_studies-single-column-hero-text-line {
  width: 220px;
  height: 2px;
  background-color: #fff;
  margin: 30px auto 0;
}

/* ========================================
   Main Visual
   ======================================== */
.main-visual {
  position: relative;
  width: 100%;
  height: 320px;
  overflow: hidden;
}

.main-visual__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.main-visual__bg-img {
  position: absolute;
  width: 110%;
  height: 441%;
  top: -148%;
  left: -3%;
  max-width: none;
  object-fit: cover;
}

.main-visual__overlay {
  position: absolute;
  inset: 0;
  background-color: var(--color-normal-blue);
  opacity: 0.5;
}

.main-visual__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 50px 240px;
  color: var(--color-white);
  text-transform: uppercase;
}

.main-visual__title-ja {
  font-size: 40px;
  font-weight: 700;
}

.main-visual__title-en {
  font-family: "Barlow Condensed", sans-serif;
  font-size: 280px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0;
}

/* ========================================
     Intro
     ======================================== */
.container_case_studies {
  position: relative;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
}

.container_case_studies::before {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  top: 0;
  bottom: 0;
  background-image: url(../img/news/mask-group.webp);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  z-index: -1;
}

.main_case_studies .intro {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 60px;
}

.main_case_studies .intro__text {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 20px;
  font-weight: 400;
  line-height: 1.8;
  text-align: center;
  max-width: 1800px;
  width: 100%;
}

/* ========================================
     Filter
     ======================================== */
.main_case_studies .filter {
  padding: 0;
}

.main_case_studies .filter__inner {
  display: flex;
  align-items: center;
  background-color: var(--color-light-gray);
  border-radius: 8px;
  overflow: hidden;
  max-width: 1200px;
  width: 100%;
}

.main_case_studies .filter__label-box {
  width: 70px;
  height: 80px;
  flex-shrink: 0;
  background-color: var(--color-normal-blue);
  clip-path: polygon(0 0, 100% 0, 50% 100%, 0 100%);
}

.main_case_studies .filter__controls {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 80px;
  padding-left: 20px;
}

.main_case_studies .filter__heading {
  font-size: 20px;
  font-weight: 600;
  white-space: nowrap;
}

.main_case_studies .filter__tags {
  display: flex;
  align-items: center;
  gap: 10px;
}

.main_case_studies .filter-tag {
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 16px;
  border-radius: 4px;
  background: var(--color-white);
  font-size: 16px;
  font-weight: 400;
  color: var(--color-black);
  white-space: nowrap;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}

.main_case_studies .filter-tag--active {
  background-color: var(--color-normal-blue);
  color: var(--color-white);
}

/* ========================================
     Card List
     ======================================== */
.main_case_studies .card-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
  padding: 40px 0 140px;
  max-width: 1200px;
  margin: 0 auto;
}

.main_case_studies article.card {
  width: 32%;
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: 8px;
  overflow: hidden;
  flex-shrink: 0;
  padding: 0;
}

.main_case_studies .card__link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.main_case_studies .card:hover {
  opacity: 0.8;
  transition: opacity 0.2s;
}

.main_case_studies .card__image {
  width: 100%;
  height: 290px;
  overflow: hidden;
}

.main_case_studies .card__image img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.main_case_studies .card__content {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px 16px;
}

.main_case_studies .card__tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 12px;
  border-radius: 2px;
  background: var(--color-normal-blue);
  color: var(--color-white);
  font-size: 14px;
  font-weight: 400;
  white-space: nowrap;
  align-self: flex-start;
}

.main_case_studies .card__title {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-main-blue);
  line-height: 1;
}

.main_case_studies .card__text {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--color-black);
  height: 140px;
  overflow: hidden;
}

@media (max-width: 1024px) {

  .case_studies-column-hero .column-hero-pc,
  .case_studies-column-hero .column-hero-recruit-pc,
  .case_studies-column-hero .case_studies-column-hero-pc {
    display: none;
  }

  .case_studies-single-column-hero .case_studies-single-column-hero-pc {
    display: none;
  }

  .case_studies-column-hero .column-hero-sp {
    width: 100%;
    height: 180px;
    overflow: hidden;
    position: relative;
    background-color: #f0f0f0;
    background-image: url(../img/column_hero_sp.webp);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: block;
  }

  .case_studies-column-hero .column-hero-recruit-sp {
    width: 100%;
    height: 180px;
    overflow: hidden;
    position: relative;
    background-color: #f0f0f0;
    background-image: url(../img/column_recruit_hero_sp.webp);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: block;
  }

  .case_studies-column-hero .case_studies-column-hero-sp {
    width: 100%;
    height: 180px;
    overflow: hidden;
    position: relative;
    background-color: #f0f0f0;
    background-image: url(../img/introduction/hero-sp.webp);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: block;
  }

  .case_studies-single-column-hero .case_studies-single-column-hero-sp {
    width: 100%;
    height: 180px;
    overflow: hidden;
    position: relative;
    background-color: #f0f0f0;
    background-image: url(../img/introduction/hero-sp_sigle.webp);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: block;
  }

  .main_case_studies .filter__label-box {
    height: 180px;
  }
}

@media (max-width: 768px) {

  .case_studies-column-hero,
  .case_studies-single-column-hero {
    height: 180px;
  }

  .case_studies-column-hero .case_studies-column-hero-text {
    bottom: -10px;
  }

  .case_studies-column-hero .case_studies-column-hero-text-inner {
    padding: 0 15px;
  }

  .case_studies-column-hero-text-title {
    font-size: 20px;
  }

  .case_studies-column-hero-text-en_title {
    font-size: 60px;
  }
}

/* ========================================
   Responsive — Tablet (max-width: 1024px)
   ======================================== */
@media (max-width: 1024px) {
  .container_case_studies {
    padding: 0 24px;
  }

  .main_case_studies .intro {
    padding: 40px 24px;
  }

  .main_case_studies article.card {
    width: 48%;
  }

  .main_case_studies .card__image {
    height: 220px;
  }

  .main_case_studies .filter__controls {
    flex-wrap: wrap;
    height: auto;
    padding: 16px 20px;
  }

  .main_case_studies .filter__tags {
    flex-wrap: wrap;
  }
}

/* ========================================
   Responsive — Mobile (max-width: 768px)
   ======================================== */
@media (max-width: 768px) {
  .main_case_studies .filter-tag {
    width: 32%;
    font-size: 16px;
    height: 40px;
    padding: 0 10px;
    justify-content: center;
  }

  .main_case_studies {
    padding-top: 56px;
  }

  .breadcrumb-bar {
    height: 48px;
    padding: 0 16px;
  }

  .container_case_studies {
    padding: 0 16px;
  }

  .main_case_studies .intro {
    padding: 32px 0;
  }

  .main_case_studies .intro__text {
    font-size: 15px;
    line-height: 1.8;
    text-align: left;
  }

  /* Filter */
  .main_case_studies .filter__inner {
    flex-direction: column;
    align-items: stretch;
    border-radius: 8px;
  }

  .main_case_studies .filter__label-box {
    width: 100%;
    height: 30px;
    clip-path: polygon(0 0, 130% 0, 0 100%, 0 100%);
  }

  .main_case_studies .filter__controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    height: auto;
    padding: 16px;
  }

  .main_case_studies .filter__heading {
    width: 100%;
    font-size: 18px;
    text-align: center;
  }

  .main_case_studies .filter__tags {
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
  }

  /* Cards */
  .main_case_studies .card-list {
    flex-direction: column;
    gap: 16px;
    padding: 24px 0 80px;
  }

  .main_case_studies article.card {
    width: 100%;
  }

  .main_case_studies .card__image {
    height: 200px;
  }

  .main_case_studies .card__image img {
    height: 100%;
    object-fit: contain;
  }

  .main_case_studies .card__content {
    gap: 10px;
    padding: 16px 12px;
  }

  .main_case_studies .card__title {
    font-size: 16px;
    line-height: 1.4;
  }

  .main_case_studies .card__text {
    font-size: 14px;
    line-height: 1.7;
    height: auto;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* Pagination */
  .introduction-record-pagination {
    font-size: 1.4rem;
    padding-bottom: 60px;
  }

  .introduction-record-pagination .num-pagination>span,
  .introduction-record-pagination .num-pagination>a {
    padding: 0.4rem 1rem 0.6rem;
  }

  /* No post */
  .nopost {
    padding: 40px 0 80px;
    font-size: 15px;
    text-align: center;
    line-height: 1.8;
  }

  .case_studies-single-column-hero h1.case_studies-single-column-hero-text-title {
    font-size: 42px;
  }
}

/* ========================================
   Responsive — Small Mobile (max-width: 480px)
   ======================================== */
@media (max-width: 480px) {
  .main_case_studies .intro__text {
    text-align: center;
    font-size: 16px;
  }

  .main_case_studies .card__image {
    height: 180px;
  }

  .main_case_studies .filter-tag {
    justify-content: center;
    width: 48%;
    font-size: 16px;
    height: 40px;
    padding: 0 10px;
  }

  .case_studies-column-hero-text-en_title {
    font-size: 48px;
  }

  .case_studies-column-hero-text-title {
    font-size: 18px;
  }
}