/*
 * republic-lianda.css — 西南联大专题专属样式（增量）
 * Session 17. 仅包含 Session 17 新增的 sister-topics 区块样式。
 * 主体外观仍由 republic-page.css 和 republic-subpage.css 提供。
 */

/* ──────────────────────────────────────────────────────────── */
/* Sister Topics — 横向延伸到其他民国专题                       */
/* ──────────────────────────────────────────────────────────── */

.lianda-sister-topics {
  margin-top: 2rem;
}

.lianda-sister-lede {
  max-width: 760px;
  margin: 0 auto 1.5rem;
  color: #5a4a30;
  font-size: 1.02rem;
  line-height: 1.85;
  font-style: italic;
  text-align: center;
}

.lianda-sister-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 700px) {
  .lianda-sister-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.2rem;
  }
}

.lianda-sister-grid li {
  margin: 0;
}

.lianda-sister-grid a {
  display: block;
  padding: 1.3rem 1.4rem 1.1rem;
  background: linear-gradient(180deg, #fffdf3 0%, #f7eedb 100%);
  border: 1px solid rgba(122, 90, 48, 0.22);
  border-left: 3px solid #7a5a30;
  color: #2c2620;
  text-decoration: none;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  height: 100%;
  position: relative;
}

.lianda-sister-grid a:hover {
  transform: translateY(-1px);
  border-left-color: #5a4220;
  border-color: rgba(122, 90, 48, 0.4);
  box-shadow: 0 4px 12px rgba(60, 40, 20, 0.08);
}

.lianda-sister-label {
  color: #2f2a24;
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 0.25rem;
  line-height: 1.35;
}

.lianda-sister-en {
  color: #7a5a30;
  font-family: "Montserrat", "Inter", sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  font-weight: 500;
  text-transform: uppercase;
  margin-bottom: 0.7rem;
}

.lianda-sister-note {
  margin: 0 0 0.7rem;
  color: #4a4137;
  font-size: 0.95rem;
  line-height: 1.7;
}

.lianda-sister-cta {
  display: inline-block;
  padding-top: 0.5rem;
  border-top: 1px solid rgba(122, 90, 48, 0.18);
  color: #7a5a30;
  font-family: "Montserrat", "Inter", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  font-weight: 600;
}

.lianda-sister-grid a:hover .lianda-sister-cta {
  color: #5a4220;
}

/* ──────────────────────────────────────────────────────────── */
/* Session 17 refinement: 卡片重构为 main + figures 分离        */
/* ──────────────────────────────────────────────────────────── */

.lianda-sister-card {
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #fffdf3 0%, #f7eedb 100%);
  border: 1px solid rgba(122, 90, 48, 0.22);
  border-left: 3px solid #7a5a30;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.lianda-sister-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(60, 40, 20, 0.08);
}

/* main link 是卡片的主体 */
.lianda-sister-main {
  display: block;
  padding: 1.3rem 1.4rem 1.1rem;
  color: #2c2620;
  text-decoration: none;
  flex: 1;
}

/* 当卡片有 figures 区时，main 与 figures 之间有分隔 */
.lianda-sister-card .lianda-sister-figures {
  padding: 0.9rem 1.4rem 1.1rem;
  border-top: 1px dotted rgba(122, 90, 48, 0.3);
  background: rgba(122, 90, 48, 0.03);
}

.lianda-sister-figures-label {
  color: #7a5a30;
  font-family: "Montserrat", "Inter", sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 0.55rem;
}

.lianda-sister-figures ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.45rem;
}

.lianda-sister-figures li { margin: 0; }

.lianda-sister-figures a {
  display: inline-block;
  padding: 0.28rem 0.65rem;
  background: #fffdf3;
  border: 1px solid rgba(122, 90, 48, 0.3);
  color: #2c2620;
  font-size: 0.88rem;
  line-height: 1.3;
  text-decoration: none;
  transition: all 0.15s;
}

.lianda-sister-figures a:hover {
  background: #7a5a30;
  border-color: #5a4220;
  color: #fffdf3;
}

/* Reset：原 li > a 选择器覆盖到 main 上之后，需要避免覆盖到 figures 内部 a */
/* 移除 sister-grid li 直接 hover 的 transform（移到 .lianda-sister-card 上） */
.lianda-sister-grid li > a:not(.lianda-sister-main) {
  /* 子元素 anchor 不应该应用整张卡的 hover 样式 */
}

/* 移除旧的 .lianda-sister-grid a 整体规则（被新的 .lianda-sister-main 取代） */
.lianda-sister-grid > li > a.lianda-sister-main:hover {
  /* 仅卡片自身 hover 转移到 .lianda-sister-card */
  transform: none;
  box-shadow: none;
}

/* ═══════════════════════════════════════════════════════
   论与纪 · 联大叙事区（LiandaEssayZone）
   印刷目录式版式：大号衬线编号 + 衬线标题 + 细线分隔，
   无框留白，与旧纸调一致
   ═══════════════════════════════════════════════════════ */

/* 4 张主题卡：复用 lunyu-theme-card 视觉，列数本地覆盖 */
.republic-subpage .lianda-essay-themes {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin-bottom: 1.4rem;
}
@media (min-width: 880px) {
  .republic-subpage .lianda-essay-themes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* 篇目：目录式双栏，宽栏距，顶部一条细线起排 */
.lianda-essay-grid {
  display: grid;
  grid-template-columns: 1fr;
  column-gap: 3rem;
  border-top: 1px solid rgba(129, 112, 90, 0.28);
}
@media (min-width: 760px) {
  .lianda-essay-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 条目：无框，仅下缘细线 */
.lianda-essay-card {
  border-bottom: 1px solid rgba(129, 112, 90, 0.18);
}
.lianda-essay-card.open {
  grid-column: 1 / -1;
}

/* 头部即按钮：编号 | 标题+预览 | 展开符 */
.lianda-essay-head {
  display: grid;
  grid-template-columns: 2.9rem minmax(0, 1fr) auto;
  align-items: baseline;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
  font: inherit;
  padding: 1.05rem 0.15rem 1.05rem 0;
}

/* 大号衬线编号：目录的视觉锚点 */
.lianda-essay-num {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.55rem;
  font-weight: 400;
  line-height: 1;
  color: color-mix(in srgb, var(--theme-accent, #8f2a24) 52%, #c9bda6);
  font-variant-numeric: lining-nums;
  transition: color 0.2s;
}

.lianda-essay-text {
  display: block;
  min-width: 0;
}

.lianda-essay-title {
  display: block;
  font-family: "Noto Serif SC", "Source Han Serif SC", serif;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.03em;
  color: #1f1d1a;
  transition: color 0.2s;
}

.lianda-essay-preview {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-top: 0.4rem;
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: 0.02em;
  color: #8d8170;
}

/* 展开/收起符：细体加减号 */
.lianda-essay-mark {
  align-self: center;
  padding-left: 0.9rem;
  font-family: Georgia, serif;
  font-size: 1.15rem;
  font-weight: 300;
  line-height: 1;
  color: #b5a88f;
  transition: color 0.2s, transform 0.2s;
}

/* hover：标题与编号染 tone 色 */
.lianda-essay-head:hover .lianda-essay-title {
  color: var(--theme-accent, #8f2a24);
}
.lianda-essay-head:hover .lianda-essay-num,
.lianda-essay-head:hover .lianda-essay-mark {
  color: var(--theme-accent, #8f2a24);
}

/* 展开态：预览隐去，正文对齐标题列、保持阅读版心 */
.lianda-essay-card.open .lianda-essay-preview {
  display: none;
}
.lianda-essay-card.open .lianda-essay-num,
.lianda-essay-card.open .lianda-essay-mark {
  color: var(--theme-accent, #8f2a24);
}
.lianda-essay-body {
  margin: 0 0 1.35rem 2.9rem;
  max-width: 620px;
}
.lianda-essay-body p {
  margin: 0 0 0.9em;
  font-size: 14px;
  line-height: 2.05;
  color: #3d3832;
  text-align: justify;
}
.lianda-essay-body p:last-child {
  margin-bottom: 0;
}

@media (max-width: 759px) {
  .lianda-essay-head {
    grid-template-columns: 2.4rem minmax(0, 1fr) auto;
    padding: 0.85rem 0.1rem 0.85rem 0;
  }
  .lianda-essay-num {
    font-size: 1.3rem;
  }
  .lianda-essay-title {
    font-size: 15px;
  }
  .lianda-essay-body {
    margin-left: 2.4rem;
  }
}