.page-history {
  --history-ink: #32271d;
  --history-brown: #7c4a24;
  --history-gold: #b7791f;
  --history-red: #9b3a2f;
  --history-soft: #fbf6ed;
  --history-line: #e5d5bd;
  background: #fcfaf6;
}
.page-history .bit-tag { display: inline-flex; width: fit-content; max-width: 100%; justify-self: start; }
.page-history .channel-hero { background: linear-gradient(125deg, #2d241c, #674529 56%, #925e2d); }
.page-history .channel-hero::after { background: radial-gradient(circle, rgba(251,191,36,.18), transparent 67%); }
.history-search-button { width: 46px; min-width: 46px; padding-inline: 0; }
.page-history .channel-accent-button,
.history-primary-button { border-color: #d69e4c; background: #8b572a; color: #fff; }
.page-history .channel-accent-button:hover,
.page-history .channel-accent-button:focus-visible,
.history-primary-button:hover,
.history-primary-button:focus-visible { border-color: #f6d493; background: #5f3a20; color: #fff; }

.history-topic-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 15px; }
.history-topic-grid a { position: relative; display: grid; min-height: 190px; align-content: end; overflow: hidden; padding: 20px; border: 1px solid var(--history-line); border-radius: 18px; background: linear-gradient(145deg, #fff, var(--history-soft)); color: var(--history-ink); text-decoration: none; transition: transform .18s ease, box-shadow .18s ease; }
.history-topic-grid a:hover { transform: translateY(-3px); box-shadow: 0 15px 32px rgba(72,48,27,.11); }
.history-topic-grid a > span { position: absolute; top: 12px; right: 14px; color: #d7c3a6; font: 800 2.6rem/1 Georgia,serif; }
.history-topic-grid i { margin-bottom: 24px; color: var(--history-gold); font-size: 2rem; }
.history-topic-grid strong { font-size: 1rem; }
.history-topic-grid small { margin-top: 7px; color: #7b6959; }

.history-layout,
.history-detail-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 34px; align-items: start; }
.history-feed-head { margin-bottom: 20px; }
.history-feed-head h2,
.history-list-intro h2 { color: var(--history-ink); }
.history-feed { display: grid; gap: 18px; }
.history-entry { display: grid; overflow: hidden; border: 1px solid var(--history-line); border-radius: 18px; background: #fff; box-shadow: 0 9px 24px rgba(62,43,27,.055); }
.history-entry--visual { grid-template-columns: 215px minmax(0, 1fr); }
.history-entry__media img { width: 100%; height: 100%; object-fit: cover; filter: sepia(.12); }
.history-entry__body { min-width: 0; padding: 21px 23px; }
.history-entry__top { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.history-entry__top time { color: var(--history-red); font: 800 1.35rem/1 Georgia,serif; }
.history-entry__top span { padding: 3px 8px; border-radius: 999px; background: #fdf1db; color: #8a591e; font-size: .72rem; }
.history-entry h3 { margin: 9px 0; font-size: 1.18rem; line-height: 1.4; }
.history-entry h3 a { color: var(--history-ink); text-decoration: none; }
.history-entry h3 a:hover { color: var(--history-red); }
.history-entry p { margin-bottom: 13px; color: #685b50; }
.history-entry__meta { display: flex; flex-wrap: wrap; gap: 8px 14px; color: #89786a; font-size: .76rem; }
.history-entry__meta a { color: var(--history-brown); }

.history-side { display: grid; gap: 18px; }
.history-side-card { padding: 22px; border: 1px solid var(--history-line); border-radius: 18px; background: #fff; }
.history-side-card h2 { margin: 0 0 14px; color: var(--history-ink); font-size: 1.08rem; }
.history-side-card ul { display: grid; gap: 9px; margin: 0; padding: 0; list-style: none; }
.history-side-card li a { display: block; padding: 9px 10px; border-radius: 9px; background: var(--history-soft); color: var(--history-brown); text-decoration: none; }
.history-archive-link { display: grid; gap: 9px; color: var(--history-ink); text-decoration: none; }
.history-archive-link img { width: 100%; border-radius: 12px; }
.history-archive-link span { color: #78695c; font-size: .78rem; }
.history-side-links { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 8px; }
.history-side-links a { padding: 9px; border-radius: 9px; background: var(--history-soft); color: var(--history-brown); text-align: center; text-decoration: none; }
.history-side-card--service { border: 0; background: linear-gradient(145deg, #443024, #87552c); color: #f9ead2; }
.history-side-card--service h2 { margin-top: 13px; color: #fff; }
.history-side-card--service > a:last-child { display: block; margin-top: 12px; color: #fff; text-align: center; }

.history-feature,
.history-category-intro,
.history-archive-feature { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(320px, .85fr); overflow: hidden; border: 1px solid var(--history-line); border-radius: 22px; background: #fff; box-shadow: 0 16px 38px rgba(66,43,25,.08); }
.history-feature img,
.history-category-intro img,
.history-archive-feature > img { width: 100%; height: 100%; object-fit: cover; }
.history-feature > div,
.history-category-intro > div:last-child,
.history-archive-feature > div { align-self: center; padding: clamp(25px, 4vw, 46px); }
.history-feature h2,
.history-category-intro h2,
.history-archive-feature h2 { margin: 13px 0 10px; color: var(--history-ink); }
.history-beijingit { display: grid; grid-template-columns: .8fr 1.2fr; gap: 36px; padding: clamp(25px, 4vw, 45px); border-radius: 22px; background: linear-gradient(135deg, #3a2a21, #755035); color: #f9ead2; }
.history-beijingit h2 { margin: 14px 0 9px; color: #fff; }
.history-beijingit a { color: #ffe4ad; font-weight: 700; }
.history-beijingit ol { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin: 0; padding: 0; list-style: none; }
.history-beijingit li { padding: 15px 12px; border: 1px solid rgba(255,255,255,.16); border-radius: 12px; background: rgba(255,255,255,.06); }
.history-beijingit li strong { display: block; color: #f6c66f; font: 800 1.3rem Georgia,serif; }
.history-beijingit li span { display: block; margin-top: 6px; font-size: .78rem; }

.history-era-filter { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 24px; padding: 15px; border: 1px solid var(--history-line); border-radius: 14px; background: #fff; }
.history-era-filter strong { margin-right: 5px; color: var(--history-ink); }
.history-era-filter button { width: fit-content; padding: 7px 11px; border: 1px solid #d8c4a5; border-radius: 999px; background: #fff; color: #705338; }
.history-era-filter button:hover,
.history-era-filter button[aria-pressed="true"] { border-color: var(--history-brown); background: var(--history-brown); color: #fff; }
.history-era-filter > span { margin-left: auto; color: #7d6d60; font-size: .78rem; }
.history-timeline { position: relative; display: grid; gap: 18px; }
.history-timeline::before { position: absolute; top: 0; bottom: 0; left: 67px; width: 2px; content: ""; background: #d9bea0; }
.history-timeline-node { position: relative; display: grid; grid-template-columns: 54px minmax(0,1fr); gap: 30px; }
.history-timeline-node::before { position: absolute; top: 17px; left: 61px; width: 14px; height: 14px; content: ""; border: 3px solid #fff; border-radius: 50%; background: var(--history-red); box-shadow: 0 0 0 2px #c89468; }
.history-timeline-node time { padding-top: 11px; color: var(--history-red); font: 800 1.1rem Georgia,serif; text-align: right; }
.history-timeline-node > div { padding: 18px 20px; border: 1px solid var(--history-line); border-radius: 15px; background: #fff; }
.history-timeline-node h3 { margin: 0 0 8px; }
.history-timeline-node h3 a { color: var(--history-ink); text-decoration: none; }
.history-timeline-node span { color: #936b43; font-size: .76rem; }
.history-filter-state { margin-top: 16px; padding: 13px; border: 1px dashed #c9ad8b; border-radius: 10px; color: #766455; text-align: center; }
.history-related-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.history-related-chips a { padding: 8px 11px; border-radius: 999px; background: var(--history-soft); color: var(--history-brown); text-decoration: none; }
.history-list-intro { margin-bottom: 20px; }
.history-state-samples { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 20px; }
.history-state-samples span { display: inline-flex; gap: 7px; align-items: center; padding: 8px 10px; border-radius: 9px; background: #f8efe3; color: #755b43; font-size: .78rem; }

.history-article-header { background: linear-gradient(135deg, #f8efe1, #fffaf2); }
.history-article-heading { max-width: 980px; }
.history-article { min-width: 0; padding: clamp(22px,3vw,38px); border: 1px solid var(--history-line); border-radius: 20px; background: #fff; }
.history-detail-summary { padding: 18px 20px; border-left: 4px solid var(--history-gold); border-radius: 0 12px 12px 0; background: var(--history-soft); color: #5d4a39; }
.history-article figure { margin: 26px 0; }
.history-article figure img { width: 100%; border-radius: 15px; }
.history-article figcaption { margin-top: 8px; color: #7d6d60; font-size: .78rem; }
.history-concepts h2 { color: var(--history-ink); }
.history-concepts dl { display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; }
.history-concepts dl div { padding: 17px; border: 1px solid var(--history-line); border-radius: 13px; background: #fffaf4; }
.history-concepts dt { color: var(--history-brown); font-weight: 800; }
.history-concepts dd { margin: 7px 0 0; color: #66584c; }
.history-jump { display: flex; flex-wrap: wrap; gap: 8px; margin: 28px 0; }
.history-jump a { padding: 7px 11px; border-radius: 999px; background: #efe1cf; color: var(--history-brown); text-decoration: none; }
.history-detail-timeline { position: relative; display: grid; gap: 22px; }
.history-detail-timeline::before { position: absolute; top: 0; bottom: 0; left: 62px; width: 3px; content: ""; background: #dcc5a9; }
.history-detail-node { position: relative; display: grid; grid-template-columns: 48px minmax(0,1fr); gap: 34px; scroll-margin-top: 100px; }
.history-detail-node::before { position: absolute; top: 9px; left: 55px; width: 17px; height: 17px; content: ""; border: 4px solid #fff; border-radius: 50%; background: var(--history-red); box-shadow: 0 0 0 2px #c58f63; }
.history-detail-node time { color: var(--history-red); font: 800 1.1rem Georgia,serif; text-align: right; }
.history-detail-node > div { padding: 0 0 22px; border-bottom: 1px solid var(--history-line); }
.history-detail-node h2 { margin: 5px 0 9px; color: var(--history-ink); }
.history-detail-node > div > span { color: #9b6c3c; font-size: .74rem; font-weight: 800; }
.history-node-links { display: flex; flex-wrap: wrap; gap: 8px; }
.history-node-links a { padding: 6px 9px; border-radius: 8px; background: var(--history-soft); color: var(--history-brown); text-decoration: none; }
.history-prev-next { display: grid; grid-template-columns: repeat(2,1fr); gap: 15px; margin-top: 30px; }
.history-prev-next > div { display: grid; gap: 7px; padding: 18px; border: 1px solid var(--history-line); border-radius: 14px; background: #fffaf4; }
.history-prev-next span { color: #8c6947; font-size: .74rem; font-weight: 800; }
.history-prev-next a { color: var(--history-ink); }
.history-source-note { margin-top: 28px; padding: 4px 20px 20px; border: 1px solid #d8b978; border-radius: 14px; background: #fff9e9; }
.history-source-note h2 { color: var(--history-ink); }

@media (max-width: 1199.98px) {
  .history-topic-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
  .history-beijingit { grid-template-columns: 1fr; }
}
@media (max-width: 991.98px) {
  .history-layout,
  .history-detail-layout,
  .history-feature,
  .history-category-intro,
  .history-archive-feature { grid-template-columns: 1fr; }
  .history-side { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .history-side-card--service { grid-column: 1/-1; }
  .history-beijingit ol { grid-template-columns: repeat(3,1fr); }
}
@media (max-width: 767.98px) {
  .history-topic-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .history-topic-grid a { min-height: 165px; }
  .history-side,
  .history-concepts dl,
  .history-prev-next { grid-template-columns: 1fr; }
  .history-entry--visual { grid-template-columns: 120px minmax(0,1fr); }
  .history-entry__body { padding: 16px; }
  .history-era-filter > span { width: 100%; margin-left: 0; }
  .history-beijingit ol { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 420px) {
  .history-topic-grid { grid-template-columns: 1fr; }
  .history-topic-grid a { min-height: 145px; }
  .history-entry--visual { grid-template-columns: 1fr; }
  .history-entry__media img { aspect-ratio: 3/2; }
  .history-timeline::before { left: 53px; }
  .history-timeline-node { grid-template-columns: 40px minmax(0,1fr); gap: 25px; }
  .history-timeline-node::before { left: 47px; }
}