/* ------------------------------ */
/* page: CASE STUDY */
/* ------------------------------ */

.caseStudyMain {
  background: var(--color-white);
}

.caseStudyArchive {
  padding: 200px 0 100px;
}

/* タグUI（お知らせページと同様） */
.caseStudyArchive__tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  margin-bottom: 46px;
  flex-wrap: wrap;
}

.caseStudyTab {
  position: relative;
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0 0 10px;
  font-size: 16px;
  line-height: 1.4;
  color: #838383;
  cursor: pointer;
  transition: transform 0.25s ease, color 0.25s ease;
}

.caseStudyTab:hover:not(.is-active),
.caseStudyTab:focus-visible:not(.is-active) {
  transform: scale(1.05);
  color: #555;
}

.caseStudyTab:focus-visible {
  outline: 2px solid var(--color-corporate, #b50c18);
  outline-offset: 4px;
}

.caseStudyTab.is-active {
  color: var(--color-text);
}

.caseStudyTab.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--color-text);
}

@media (prefers-reduced-motion: reduce) {
  .caseStudyTab {
    transition: color 0.2s ease;
  }

  .caseStudyTab:hover:not(.is-active),
  .caseStudyTab:focus-visible:not(.is-active) {
    transform: none;
  }
}

/* 3カラム（各カード最大320px） */
.caseStudyGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 320px));
  justify-content: space-between;
  row-gap: 54px;
  column-gap: 28px;
}

.caseCard__thumb {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: #c4c4c4;
  overflow: hidden;
}

.caseCard__thumbTitle {
  position: absolute;
  left: 12px;
  bottom: 12px;
  font-size: 20px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text);
  background: var(--color-white);
  padding: 3px 8px;
}

.caseCard__category {
  margin-top: 14px;
  font-size: 18px;
  line-height: 1.4;
  color: #838383;
}

.caseCard__title {
  margin-top: 10px;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.4;
  font-weight: 700;
}

.caseCard__summary {
  margin-top: 10px;
  font-size: 16px;
  line-height: 1.7;
  color: #838383;
}

.caseCard__meta {
  margin-top: 8px;
  font-size: 16px;
  line-height: 1.6;
  color: #838383;
}

/* ------------------------------ */
/* case-study 下部CTAセクション */
/* ------------------------------ */
.caseStudyCta {
  padding: 100px 0 200px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.caseStudyCtaTop {
  border: 1px solid var(--color-orange-2);
  border-radius: 10px;
  padding: 28px 30px;
  display: flex;
  justify-content: center;
  gap: 40px;
  align-items: center;
}

.caseStudyCtaTop__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
}

.caseStudyCtaTop__textRow {
  gap: 10px;
  display: flex;
  flex-direction: column;
}

.caseStudyCtaTop__text {
  font-size: 24px;
  line-height: 1.5;
  font-weight: 500;
}

.caseStudyCtaTop__btn {
  margin-top: 40px;
  height: 65px;
  min-width: 320px;
  padding: 0 24px;
  border: 1px solid #9b9b9b;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  position: relative;
}

.caseStudyCtaTop__btn::after {
  content: "";
  width: 14px;
  height: 14px;
  margin-left: 12px;
  border-top: 1px solid #9b9b9b;
  border-right: 1px solid #9b9b9b;
  transform: rotate(45deg);
}

.caseStudyCtaTop__thumb {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 4 / 3;
  background: #bfbfbf;
  border-radius: 2px;
  flex: 1;
}

.caseStudyCtaBottom {
  margin-top: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.caseStudyCtaBottom__card {
  height: 120px;
  border: 1px solid;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  line-height: 1.2;
  font-weight: 500;
}

.caseStudyCtaBottom__card--request {
  border-color: #5a975a;
  color: #5a975a;
}

.caseStudyCtaBottom__card--consult {
  border-color: var(--color-gray-646464);
  color: var(--color-gray-646464);
}

@media (max-width: 1100px) and (min-width: 99999px) {
  /* ↑ responsive 一時 OFF */
  .caseStudyGrid {
    grid-template-columns: repeat(2, minmax(0, 320px));
    justify-content: center;
  }
}

@media (max-width: 700px) and (min-width: 99999px) {
  /* ↑ responsive 一時 OFF */
  .caseStudyArchive {
    padding-top: 44px;
    padding-bottom: 64px;
  }

  .caseStudyArchive__tabs {
    justify-content: flex-start;
    gap: 18px;
    margin-bottom: 34px;
  }

  .caseStudyGrid {
    grid-template-columns: 1fr;
    row-gap: 36px;
  }

  .caseStudyCta {
    padding-bottom: 64px;
  }

  .caseStudyCtaTop {
    grid-template-columns: 1fr;
    row-gap: 20px;
  }

  .caseStudyCtaTop__thumb {
    max-width: 320px;
  }

  .caseStudyCtaBottom {
    grid-template-columns: 1fr;
  }

  .caseStudyCtaBottom__card {
    font-size: 28px;
  }
}