/* 文化總覽、五個面向、那時與現在（culture_facets）。類名前綴 cu-、tn- */
.cu-crumb { display: flex; gap: 6px; align-items: center; padding-top: 20px; font-size: 13px; color: var(--dl-ink3); }
.cu-crumb a { color: var(--dl-sea); text-decoration: none; }
.cu-crumb b { color: var(--dl-ink2); font-weight: 600; }
.cu-head { padding-top: 16px; }
.cu-title__sub { font: 700 .62em/1.3 var(--dl-serif); color: var(--dl-ink2); }
.cu-nums { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 16px; margin-top: 16px; font-size: 13px; color: var(--dl-ink3); }
.cu-nums > span b { font: 600 18px/1 var(--dl-mono); color: var(--dl-ink); margin-right: 3px; }
.cu-how { margin: 0; }
.cu-how ul { margin: 8px 0 0; padding-left: 18px; line-height: 1.7; color: var(--dl-ink2); max-width: 680px; }
.cu-jump { display: flex; gap: 6px; margin-top: 16px; overflow-x: auto; scrollbar-width: none; padding-bottom: 2px; }
.cu-jump::-webkit-scrollbar { display: none; }
.cu-jump a { flex: none; display: inline-flex; align-items: center; gap: 6px; height: 30px; padding: 0 12px; border: 1px solid var(--dl-hair); border-radius: 15px;
  font-size: 14px; color: var(--dl-ink); text-decoration: none; background: var(--dl-paper2); }
.cu-jump a small { font: 500 12px/1 var(--dl-mono); color: var(--dl-ink3); }
.cu-jump a:hover { border-color: var(--dl-sea); }
.cu-lead { margin: -4px 0 14px; color: var(--dl-ink2); font-size: 15px; line-height: 1.7; }
.cu-sec { scroll-margin-top: 80px; }

/* 卡片牆 */
.cu-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 20px; }
.cu-card { position: relative; display: flex; flex-direction: column; min-width: 0; background: var(--dl-paper2); border: 1px solid var(--dl-hair); border-radius: 10px; }
.cu-card__open { all: unset; cursor: pointer; display: flex; flex-direction: column; flex: 1; border-radius: 10px 10px 0 0; }
.cu-card__open:focus-visible { outline: 2px solid var(--dl-sea); outline-offset: 2px; }
.cu-card__cov { position: relative; display: block; aspect-ratio: 16 / 10; border-radius: 10px 10px 0 0; overflow: hidden; background: #ece7dd; }
.cu-card__cov img, .cu-card__cov .cu-art { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; }
.cu-card__b { display: flex; flex-direction: column; gap: 4px; padding: 12px 14px 4px; }
.cu-card__t { font: 700 17px/1.4 var(--dl-serif); color: var(--dl-ink); }
.cu-card__p { font-size: 12px; color: var(--dl-warm); font-weight: 600; }
.cu-card__x { font-size: 14px; line-height: 1.7; color: var(--dl-ink2); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.cu-card__more { font-size: 13px; color: var(--dl-sea); font-weight: 600; margin-top: 2px; }
.cu-card__cr { position: absolute; right: 8px; top: 8px; }
.cu-card__f { padding: 4px 14px 12px; display: flex; align-items: center; gap: 6px; min-height: 22px; }

/* 出處、© 彈出（卡片不能 overflow:hidden，不然彈出框被切掉） */
.cu-src, .cu-cr { position: relative; display: inline-block; }
.cu-src > summary, .cu-cr > summary { list-style: none; cursor: pointer; }
.cu-src > summary::-webkit-details-marker, .cu-cr > summary::-webkit-details-marker { display: none; }
.cu-src > summary { display: inline-flex; align-items: center; gap: 4px; height: 22px; padding: 0 8px; border-radius: 11px; font-size: 12px; color: var(--dl-ink3); border: 1px solid var(--dl-hair); background: var(--dl-paper); }
.cu-src > summary:hover { color: var(--dl-sea); border-color: var(--dl-sea); }
.cu-src > ul { position: absolute; z-index: 20; left: 0; bottom: calc(100% + 6px); width: max-content; max-width: min(320px, 80vw); margin: 0; padding: 10px 12px 10px 26px;
  background: #fff; border: 1px solid var(--dl-hair); border-radius: 8px; box-shadow: 0 8px 24px rgba(16, 36, 42, .14); font-size: 13px; line-height: 1.6; }
.cu-src > ul a { color: var(--dl-sea); word-break: break-all; }
.cu-cert { font-size: 12px; color: var(--dl-ink3); }
.cu-cr > summary { width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font-size: 12px; font-weight: 700; color: #fff; background: rgba(16, 36, 42, .55); }
.cu-cr > div { position: absolute; z-index: 20; right: 0; top: 28px; width: max-content; max-width: min(280px, 78vw); padding: 10px 12px; background: #fff; border: 1px solid var(--dl-hair);
  border-radius: 8px; box-shadow: 0 8px 24px rgba(16, 36, 42, .14); font-size: 12px; line-height: 1.6; color: var(--dl-ink2); }
.cu-cr > div p { margin: 0 0 4px; }
.cu-cr > div a { color: var(--dl-sea); }

/* 完整內容 */
.cu-dlg { width: min(760px, calc(100vw - 32px)); max-height: calc(100vh - 48px); padding: 0; border: 0; border-radius: 14px; background: var(--dl-paper2); color: var(--dl-ink); box-shadow: 0 20px 60px rgba(16, 36, 42, .3); }
.cu-dlg::backdrop { background: rgba(16, 36, 42, .45); }
.cu-dlg__in { position: relative; padding: 24px; }
.cu-dlg__x { position: sticky; top: 0; float: right; width: 36px; height: 36px; border-radius: 50%; border: 1px solid var(--dl-hair); background: #fff; font-size: 20px; line-height: 1; cursor: pointer; color: var(--dl-ink2); }
.cu-dlg__p { font-size: 13px; font-weight: 600; color: var(--dl-warm); }
.cu-dlg__t { margin: 4px 44px 14px 0; font: 700 24px/1.35 var(--dl-serif); }
.cu-dlg__ph { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 14px; }
.cu-dlg__ph.is-one { grid-template-columns: 1fr; }
.cu-dlg__ph figure { margin: 0; }
.cu-dlg__ph img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 8px; background: #ece7dd; }
.cu-dlg__ph.is-one img { aspect-ratio: auto; max-height: 460px; object-fit: contain; }
.cu-dlg__ph figcaption { font-size: 13px; line-height: 1.6; color: var(--dl-ink2); margin-top: 6px; }
.cu-dlg__ph figcaption small { display: block; color: var(--dl-ink3); font-size: 12px; }
.cu-dlg__ph figcaption a { color: var(--dl-sea); }
.cu-dlg__x2 { font-size: 16px; line-height: 1.9; margin: 0 0 14px; }
.cu-kv { margin: 0 0 14px; border-top: 1px solid var(--dl-hair); }
.cu-kv div { display: grid; grid-template-columns: 7em 1fr; gap: 12px; padding: 8px 0; border-bottom: 1px solid var(--dl-hair); font-size: 14px; }
.cu-kv dt { color: var(--dl-ink3); }
.cu-kv dd { margin: 0; }
.cu-links { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.cu-links a { display: inline-flex; align-items: center; height: 30px; padding: 0 12px; border-radius: 15px; background: var(--dl-paper); border: 1px solid var(--dl-hair); color: var(--dl-sea); font-size: 14px; text-decoration: none; }
.cu-dlg__src { font-size: 13px; color: var(--dl-ink2); border-top: 1px solid var(--dl-hair); padding-top: 10px; }
.cu-dlg__src ul { margin: 4px 0 6px; padding-left: 18px; line-height: 1.7; }
.cu-dlg__src a { color: var(--dl-sea); word-break: break-all; }

/* 歲時：一年的節奏 */
.cu-year__grid { overflow-x: auto; }
.cu-year__hd, .cu-year__row { display: grid; grid-template-columns: minmax(140px, 1.6fr) repeat(12, minmax(18px, 1fr)); gap: 3px; align-items: center; min-width: 480px; }
.cu-year__hd span { font: 500 11px/1 var(--dl-mono); color: var(--dl-ink3); text-align: center; padding-bottom: 6px; }
.cu-year__row { padding: 3px 0; border-top: 1px solid var(--dl-hair); }
.cu-year__row > span { height: 14px; border-radius: 3px; background: var(--dl-paper); }
.cu-year__row > span.is-on { background: var(--dl-warm); }
.cu-year__row > span.is-lunar { background: repeating-linear-gradient(135deg, var(--dl-warm) 0 3px, #f3d6c8 3px 6px); }
.cu-year__n { all: unset; cursor: pointer; font-size: 14px; color: var(--dl-ink); padding-right: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cu-year__n:hover { color: var(--dl-sea); }
.cu-note { font-size: 12px; color: var(--dl-ink3); margin: 8px 0 0; }

/* 其他面向、總覽 */
.cu-sib { display: flex; flex-wrap: wrap; gap: 10px; }
.cu-sib a { display: flex; flex-direction: column; min-width: 140px; padding: 10px 14px; border: 1px solid var(--dl-hair); border-radius: 10px; background: var(--dl-paper2); text-decoration: none; color: var(--dl-ink); }
.cu-sib a b { font: 700 16px/1.4 var(--dl-serif); }
.cu-sib a small { font-size: 12px; color: var(--dl-ink3); }
.cu-ov { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
.cu-ov--sm { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 14px; }
.cu-ov__a { display: flex; flex-direction: column; height: 100%; border: 1px solid var(--dl-hair); border-radius: 10px; overflow: hidden; background: var(--dl-paper2); text-decoration: none; color: var(--dl-ink); }
.cu-ov__a:hover { border-color: var(--dl-sea); }
.cu-ov__cov { position: relative; display: block; aspect-ratio: 16 / 10; overflow: hidden; background: #ece7dd; }
.cu-ov--sm .cu-ov__cov { aspect-ratio: 16 / 7; }
.cu-ov__cov img, .cu-ov__cov .cu-art { position: absolute; inset: 0; display: block; width: 100%; height: 100%; object-fit: cover; }
.cu-ov__b { display: flex; flex-direction: column; gap: 2px; padding: 12px 14px 14px; }
.cu-ov__b b { font: 700 20px/1.35 var(--dl-serif); }
.cu-ov--sm .cu-ov__b b { font-size: 17px; }
.cu-ov__b small { font-size: 12px; color: var(--dl-warm); font-weight: 600; }
.cu-ov__b > span { font-size: 14px; line-height: 1.6; color: var(--dl-ink2); margin-top: 4px; }

.cu-gaps details { border-top: 2px solid var(--dl-ink); padding-top: 12px; }
.cu-gaps summary { cursor: pointer; font: 700 18px/1.4 var(--dl-serif); }
.cu-gaps ul { margin: 10px 0 0; padding-left: 20px; color: var(--dl-ink2); font-size: 14px; line-height: 1.8; }

/* 那時與現在 */
.tn-mode { display: inline-flex; border: 1px solid var(--dl-hair); border-radius: 18px; overflow: hidden; background: var(--dl-paper2); }
.tn-mode button { all: unset; cursor: pointer; height: 30px; padding: 0 14px; font-size: 14px; color: var(--dl-ink2); }
.tn-mode button.is-on { background: var(--dl-ink); color: #fff; }
.tn-stage { --tn-x: 50%; position: relative; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.tn-ph { position: relative; margin: 0; }
.tn-ph img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: contain; border-radius: 8px; background: #e6e1d6; }
.tn-ph figcaption { position: absolute; left: 8px; top: 8px; padding: 2px 8px; border-radius: 4px; background: rgba(16, 36, 42, .72); color: #fff; font-size: 12px; }
.tn-ph--old img { filter: sepia(.15); }
.tn-cr { position: absolute; right: 8px; bottom: 8px; }
.tn-cr .cu-cr > div { top: auto; bottom: 28px; }
.tn-stage.is-drag { display: block; max-width: 860px; touch-action: pan-y; cursor: ew-resize; user-select: none; }
.tn-stage.is-drag .tn-ph--now { position: absolute; inset: 0; clip-path: inset(0 0 0 var(--tn-x)); }
.tn-stage.is-drag .tn-ph--now figcaption { left: auto; right: 8px; }
.tn-stage.is-drag .tn-ph--old .tn-cr { right: auto; left: 8px; }
.tn-stage.is-drag .tn-ph--old .tn-cr .cu-cr > div { right: auto; left: 0; }
.tn-stage.is-drag::after { content: ''; position: absolute; top: 0; bottom: 0; left: var(--tn-x); width: 2px; margin-left: -1px; background: #fff; box-shadow: 0 0 0 1px rgba(16, 36, 42, .3); pointer-events: none; }
.tn-range { display: block; width: 100%; margin: 10px 0 0; accent-color: var(--dl-warm); }
.tn-note { margin: 10px 0 0; font-size: 15px; line-height: 1.8; color: var(--dl-ink2); max-width: 760px; }
.tn-note .cu-src { margin-left: 6px; vertical-align: middle; }

@media (max-width: 640px) {
  /* 手機：卡片改清單（小方圖＋標題＋一行） */
  .cu-grid { grid-template-columns: 1fr; gap: 0; border-top: 1px solid var(--dl-hair); }
  .cu-card { display: grid; grid-template-columns: 88px 1fr; border: 0; border-bottom: 1px solid var(--dl-hair); border-radius: 0; background: none; padding: 12px 0; }
  .cu-card__open { display: contents; }
  .cu-card__cov { grid-row: 1 / 3; width: 88px; height: 88px; aspect-ratio: auto; border-radius: 8px; }
  .cu-card__b { padding: 0 0 0 12px; gap: 2px; }
  .cu-card__t { font-size: 16px; }
  .cu-card__x { -webkit-line-clamp: 2; font-size: 13px; }
  .cu-card__more { display: none; }
  .cu-card__cr { left: 62px; right: auto; top: 14px; }
  .cu-card__cr .cu-cr > div { right: auto; left: 0; }
  .cu-card__f { padding: 4px 0 0 12px; grid-column: 2; }
  .cu-dlg { width: 100vw; max-width: 100vw; max-height: 92vh; margin: auto 0 0; border-radius: 14px 14px 0 0; }
  .cu-dlg__in { padding: 16px; }
  .cu-dlg__ph { grid-template-columns: 1fr; }
  .cu-dlg__t { font-size: 21px; }
  .cu-ov { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .cu-ov__b { padding: 8px 10px 10px; }
  .cu-ov__b b { font-size: 17px; }
  .cu-ov__b > span { display: none; }
  .cu-year__hd, .cu-year__row { grid-template-columns: 96px repeat(12, minmax(0, 1fr)); gap: 2px; min-width: 0; }
  .cu-year__n { font-size: 13px; }
  .cu-year__hd span { font-size: 10px; }
  .tn-stage { gap: 4px; }
  .tn-ph img { aspect-ratio: 1 / 1; }
  .tn-stage.is-drag .tn-ph img { aspect-ratio: 4 / 3; }
}