.page-hero { padding: 184px 0 86px; color: #fff; background: linear-gradient(110deg, rgba(8, 48, 35, .93), rgba(23, 97, 72, .79)), url("../images/activity-street-tree.jpg") center / cover; }
.page-hero__eyebrow, .section-heading > p, .activity-link > .container > p { margin: 0; color: var(--lime); font-size: 13px; font-weight: 700; letter-spacing: .18em; }
.page-hero h1 { margin: 8px 0; font-size: clamp(38px, 5vw, 58px); font-weight: 400; letter-spacing: .1em; }
.page-hero p:last-child { margin: 0; }
.about-section { padding: 92px 0; }
.about-section--cream { background: var(--cream); }
.section-heading { margin-bottom: 38px; }
.section-heading h2 { margin: 7px 0 0; font-size: clamp(28px, 3.2vw, 42px); font-weight: 400; letter-spacing: .08em; }
.section-heading span { color: #64716b; font-size: 14px; }
.overview-grid, .history-business { display: grid; grid-template-columns: 1fr 1fr; gap: 58px; }
.overview-list { margin: 0; border-top: 2px solid var(--green); }
.overview-list > div { display: grid; grid-template-columns: 130px 1fr; padding: 14px 8px; border-bottom: 1px solid #d7ded9; }
.overview-list dt { color: var(--green); font-weight: 700; }
.overview-list dd { margin: 0; }
.overview-lead h3, .history-business h3 { margin: 0 0 15px; color: var(--green); font-size: 23px; font-weight: 700; letter-spacing: .05em; }
.overview-lead p { margin: 0 0 18px; }
.history-business { margin-top: 68px; padding-top: 46px; border-top: 1px solid #d7ded9; }
.history-list, .business-list { margin: 0; padding: 0; list-style: none; }
.history-list li { display: grid; grid-template-columns: 120px 1fr; padding: 10px 0; border-bottom: 1px solid #d7ded9; }
.history-list time { color: var(--green); font-weight: 700; }
.business-list li { position: relative; padding: 10px 0 10px 20px; border-bottom: 1px solid #d7ded9; }
.business-list li::before { content: ""; position: absolute; top: 23px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--lime); }
.table-wrap { overflow-x: auto; border-top: 2px solid var(--green); }
.data-table { width: 100%; min-width: 680px; border-collapse: collapse; background: #fff; }
.data-table th, .data-table td { padding: 13px 18px; border: 1px solid #d7ded9; text-align: left; vertical-align: middle; }
.data-table th { color: var(--green); background: #edf2ec; font-weight: 700; }
.officers-table td:nth-child(1), .officers-table td:nth-child(2) { white-space: nowrap; }
.qualifications-table { min-width: 560px; }
.qualifications-table td:last-child, .qualifications-table th:last-child { width: 110px; text-align: right; white-space: nowrap; }
.activity-link { padding: 84px 0; color: #fff; background: var(--green); text-align: center; }
.activity-link h2 { margin: 7px 0 22px; font-size: clamp(28px, 3.4vw, 42px); font-weight: 400; letter-spacing: .08em; }
.about-button { display: inline-flex; align-items: center; gap: 30px; padding: 13px 24px; border: 1px solid #fff; font-weight: 700; transition: .2s; }
.about-button:hover { color: var(--green); background: #fff; }
.about-button span { font-size: 21px; }
@media (max-width: 760px) {
  .page-hero { padding: 130px 0 58px; }
  .about-section { padding: 65px 0; }
  .overview-grid, .history-business { grid-template-columns: 1fr; gap: 32px; }
  .history-business { margin-top: 46px; padding-top: 36px; }
  .overview-list > div { grid-template-columns: 100px 1fr; padding: 11px 0; }
  .history-list li { grid-template-columns: 100px 1fr; }
  .data-table th, .data-table td { padding: 11px 13px; font-size: 14px; }

  /* Add data-label to each td when applying this reusable class to future member lists. */
  .table-wrap:has(.data-table--mobile-cards) { overflow: visible; border: 0; }
  .data-table--mobile-cards, .data-table--mobile-cards tbody, .data-table--mobile-cards tr, .data-table--mobile-cards td { display: block; min-width: 0; }
  .data-table--mobile-cards thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; }
  .data-table--mobile-cards { background: transparent; }
  .data-table--mobile-cards tr { margin: 0 0 14px; padding: 5px 16px; border: 1px solid #d7ded9; border-left: 3px solid var(--green); background: #fff; }
  .data-table--mobile-cards td { display: grid; grid-template-columns: minmax(88px, 34%) 1fr; gap: 12px; padding: 10px 0; border: 0; border-bottom: 1px solid #d7ded9; text-align: left; }
  .data-table--mobile-cards td:last-child { width: auto; border-bottom: 0; text-align: left; white-space: normal; }
  .data-table--mobile-cards td::before { content: attr(data-label); color: var(--green); font-weight: 700; }
  .qualifications-table td[rowspan] { padding-bottom: 10px; }
  .qualifications-table td:first-child:nth-last-child(3)::before { content: "資格"; }
  .qualifications-table td:first-child:nth-last-child(2)::before,
  .qualifications-table td:nth-child(2):nth-last-child(2)::before { content: "区分"; }
  .qualifications-table td:last-child::before { content: "人数"; }
}