/* ===== 中外教育史 · 专属词云 ===== */
.edu-eduhist {
  max-width: 920px;
  margin: 18px auto 0;
  padding: 18px 18px 16px;
  border: 1px solid;
  border-radius: 1.3rem;
}
html[data-theme="light"] .edu-eduhist {
  border-color: rgba(194,65,12,.18);
  background: linear-gradient(160deg, rgba(255,252,248,.85), rgba(253,246,240,.6));
  box-shadow: 0 4px 18px rgba(0,0,0,.03);
}
html[data-theme="dark"] .edu-eduhist {
  border-color: rgba(217,119,6,.2);
  background: linear-gradient(160deg, rgba(38,32,28,.75), rgba(40,34,30,.55));
}
.eh-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.eh-title { font-size: 1.05rem; font-weight: 800; margin: 0; }
html[data-theme="light"] .eh-title { color: #9a3412; }
html[data-theme="dark"] .eh-title { color: #fdba74; }
.eh-meta { font-size: .74rem; color: #94a3b8; line-height: 1.6; margin: 4px 0 12px; }

/* 章节热度条 */
.eh-stats { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.eh-stat { display: grid; grid-template-columns: 108px 1fr 52px; align-items: center; gap: 8px; font-size: .76rem; }
.eh-stat-name { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.eh-stat-bar { height: 9px; border-radius: 5px; background: rgba(148,163,184,.18); overflow: hidden; }
.eh-stat-bar i { display: block; height: 100%; border-radius: 5px; opacity: .85; }
.eh-stat-num { text-align: right; color: #94a3b8; font-variant-numeric: tabular-nums; }

/* 章节 tab */
.eh-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.eh-tab {
  font-family: inherit; font-size: .76rem; font-weight: 600; cursor: pointer;
  padding: 4px 12px; border-radius: 999px; border: 1px solid; background: transparent;
  transition: all .16s;
}
html[data-theme="light"] .eh-tab { border-color: #e2e8f0; color: #64748b; }
html[data-theme="light"] .eh-tab:hover { border-color: var(--ch, #c2410c); color: var(--ch, #c2410c); }
html[data-theme="light"] .eh-tab.is-active { background: var(--ch, #c2410c); border-color: var(--ch, #c2410c); color: #fff; }
html[data-theme="dark"] .eh-tab { border-color: #3f3a35; color: #a8a29e; }
html[data-theme="dark"] .eh-tab:hover { border-color: var(--ch, #d97706); color: var(--ch, #d97706); }
html[data-theme="dark"] .eh-tab.is-active { background: var(--ch, #d97706); border-color: var(--ch, #d97706); color: #fff; }

.eh-cloud {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: center;
  gap: 6px 13px; padding: 12px 6px 6px; min-height: 130px; line-height: 1.25;
}
.eh-foot {
  margin-top: 12px; padding-top: 10px; border-top: 1px dashed #e2e8f0;
  font-size: .72rem; color: #94a3b8; text-align: center;
}
html[data-theme="dark"] .eh-foot { border-top-color: #3f3a35; }

@media (max-width: 640px) {
  .edu-eduhist { padding: 14px 12px 12px; }
  .eh-stat { grid-template-columns: 88px 1fr 46px; font-size: .72rem; }
  .eh-cloud { gap: 4px 9px; }
}