/* ==========================================================
   沿革 (/company/history/)
   ========================================================== */

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

.p-history {
  padding-block: clamp(48px, 6vw, 72px) clamp(40px, 6vw, 80px);
}

.p-history__inner {
  max-width: 1080px;
  margin-inline: auto;
}

.p-history__head {
  margin-bottom: clamp(32px, 5vw, 48px);
}

.p-history__label {
  margin: 0 0 6px;
  font-size: clamp(var(--fs-fv-catch), 6vw, var(--fs-fluid-50));
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-top-green-main);
}

.p-history__title {
  margin: 0;
  font-size: var(--fs-top-news-title);
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-top-section-title);
  letter-spacing: 0.06em;
}

.p-history__list {
  --history-year-col: 6rem;
  --history-track-col: 2.25rem;
  --history-gap: clamp(18px, 2.6vw, 30px);
  --history-line-color: #3d4d73;
  --history-dot-size: 6px;
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 800px;
  margin-inline: auto;
}

.p-history__list::before {
  content: "";
  position: absolute;
  top: 1em;
  bottom: 1em;
  left: calc(var(--history-year-col) + (var(--history-track-col) / 2));
  width: 1px;
  background-color: var(--history-line-color);
}

.p-history__item {
  position: relative;
  display: grid;
  grid-template-columns: var(--history-year-col) 1fr;
  column-gap: 40px;
  align-items: center;
  padding-bottom: clamp(18px, 2.6vw, 26px);
}

.p-history__item::before {
  content: "";
  position: absolute;
  top: 1em;
  left: calc(var(--history-year-col) + (var(--history-track-col) / 2) - (var(--history-dot-size) / 2));
  width: var(--history-dot-size);
  height: var(--history-dot-size);
  border-radius: 50%;
  background-color: var(--history-line-color);
}

.p-history__item:last-child {
  padding-bottom: 0;
}

.p-history__year {
  display: block;
  margin: 0;
  padding-top: 0;
  writing-mode: horizontal-tb;
  text-orientation: mixed;
  font-size: var(--fs-fluid-20);
  font-weight: 500;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--color-text-sub);
  text-align: right;
}

.p-history__rule {
  display: none;
}

.p-history__text {
  margin: 0;
  padding-top: 0;
  writing-mode: horizontal-tb;
  text-orientation: mixed;
  font-size: var(--fs-fluid-20);
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-text);
}

@media (max-width: 767px) {
  .p-history__list {
    --history-year-col: 3.5rem;
    --history-track-col: 1.25rem;
    --history-gap: 14px;
    --history-dot-size: 5px;
  }

  .p-history__item {
    grid-template-columns: var(--history-year-col) minmax(0, 1fr);
    column-gap: var(--history-gap);
    align-items: start;
    padding-bottom: 16px;
  }

  .p-history__list::before {
    left: calc(var(--history-year-col) + (var(--history-gap) / 2));
  }

  .p-history__item::before {
    left: calc(var(--history-year-col) + (var(--history-gap) / 2) - (var(--history-dot-size) / 2));
    top: 0.7em;
  }

  .p-history__year {
    font-size: 13px;
    line-height: 1.4;
  }

  .p-history__text {
    font-size: 14px;
    line-height: 1.7;
  }
}