/* ============================================================
 * warm-kinder 皮肤包样式（default 派生）（方案 §8.2）
 * 换肤 = 拷贝 default 目录改 CSS 变量与布局，零后端代码。
 * 轮播图设计尺寸约定：1920×560（管理端上传端按此引导裁剪，D2 决策点确认）。
 * ============================================================ */
:root {
  --primary: #e8722a;
  --primary-dark: #c25a1a;
  --text: #333;
  --text-light: #777;
  --bg: #fff8f0;
  --card-bg: #fffdf9;
  --border: #f3e3d3;
  --max-width: 1200px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; }
time, .item-meta { color: var(--text-light); font-size: 13px; }
.empty { color: var(--text-light); text-align: center; padding: 32px 0; }

/* ===== 头部 ===== */
.site-header { background: var(--card-bg); border-bottom: 1px solid var(--border); }
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.site-brand { display: flex; align-items: center; gap: 12px; }
.site-logo { height: 44px; }
.site-name { font-size: 26px; font-weight: 700; color: var(--primary); }
.site-search { display: flex; }
.site-search input {
  border: 1px solid var(--border);
  border-right: none;
  padding: 8px 12px;
  width: 220px;
  outline: none;
}
.site-search button {
  border: none;
  background: var(--primary);
  color: #fff;
  padding: 8px 18px;
  cursor: pointer;
}

/* ===== 专业院系下拉（院系子站切换，《院系子站方案》） ===== */
/* 悬停展开白底纵向列表，右对齐 + 超高滚动（院系数十个子站场景） */
.site-colleges { position: relative; }
.site-colleges .colleges-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--border);
  padding: 8px 14px;
  cursor: pointer;
  color: var(--primary);
  font-weight: 600;
  white-space: nowrap;
}
.site-colleges .colleges-arrow { font-style: normal; font-size: 12px; color: var(--text-light); }
.site-colleges .colleges-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 200px;
  max-height: 420px;
  overflow-y: auto;
  margin: 0;
  padding: 6px 0;
  list-style: none;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-top: 2px solid var(--primary);
  box-shadow: 0 6px 16px rgba(0, 0, 0, .12);
  z-index: 110;
}
.site-colleges:hover .colleges-menu { display: block; }
.site-colleges .colleges-menu li a {
  display: block;
  padding: 9px 16px;
  color: var(--text);
  white-space: nowrap;
}
.site-colleges .colleges-menu li a:hover { background: #f2f6fc; color: var(--primary); }
.site-colleges .colleges-menu li.active a { color: var(--primary); font-weight: 600; }
.site-nav { background: var(--primary); }
.site-nav ul {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
}
.site-nav li a {
  display: block;
  padding: 12px 22px;
  color: #fff;
}
.site-nav li:hover a, .site-nav li.active a { background: var(--primary-dark); }

/* ===== 二级下拉导航 ===== */
/* 面板为白底纵向列表：需整体覆盖 .site-nav ul 的横向 flex 与内边距 */
.site-nav > ul > li { position: relative; }
.site-nav li.has-sub > a::after { content: " ▾"; font-size: 12px; opacity: .85; }
.site-nav ul.sub-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 168px;
  max-width: none;
  margin: 0;
  padding: 6px 0;
  list-style: none;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-top: 2px solid var(--primary);
  box-shadow: 0 6px 16px rgba(0, 0, 0, .12);
  z-index: 100;
}
.site-nav li:hover > .sub-nav { display: block; }
.site-nav .sub-nav li a {
  padding: 9px 16px;
  color: var(--text);
  white-space: nowrap;
  background: none;
}
.site-nav .sub-nav li a:hover { background: #f2f6fc; color: var(--primary); }
.site-nav .sub-nav li.active a { color: var(--primary); font-weight: 600; }

/* ===== 首页轮播 ===== */
.banner { position: relative; max-width: var(--max-width); margin: 16px auto; overflow: hidden; }
.banner-slides { position: relative; height: 420px; }
.banner-slide { display: none; position: absolute; inset: 0; }
.banner-slide.active { display: block; }
.banner-slide img { width: 100%; height: 100%; object-fit: cover; }
.banner-title {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 12px 20px;
  color: #fff;
  background: linear-gradient(transparent, rgba(0, 0, 0, .6));
}
.banner-dots {
  position: absolute;
  bottom: 12px; right: 20px;
  display: flex; gap: 8px;
}
.banner-dots button {
  width: 10px; height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, .6);
  cursor: pointer;
}
.banner-dots button.active { background: #fff; }

/* ===== 通用区块 ===== */
.top-strip, .category-block {
  max-width: var(--max-width);
  margin: 16px auto;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
}
.section-title, .block-head h2 {
  margin: 0 0 12px;
  font-size: 20px;
  border-left: 4px solid var(--primary);
  padding-left: 10px;
}
.block-head { display: flex; align-items: baseline; justify-content: space-between; }
.more { font-size: 13px; color: var(--text-light); }
.top-strip ul, .block-list { list-style: none; margin: 0; padding: 0; }
.top-strip li, .block-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--border);
}
.top-strip li:last-child, .block-list li:last-child { border-bottom: none; }
.top-strip li a, .block-list li a {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.top-badge {
  flex: none;
  color: #fff;
  background: var(--primary);
  font-size: 12px;
  padding: 1px 6px;
  border-radius: 2px;
}

/* ===== 列表页 ===== */
.list-main {
  max-width: var(--max-width);
  margin: 16px auto;
  padding: 24px;
  background: var(--card-bg);
  border: 1px solid var(--border);
}
.breadcrumb { color: var(--text-light); font-size: 13px; margin-bottom: 16px; }
.breadcrumb a { margin-right: 8px; }
.breadcrumb span { margin-left: 8px; }
.page-title {
  font-size: 22px;
  border-left: 4px solid var(--primary);
  padding-left: 10px;
  margin: 0 0 18px;
}
.article-list { list-style: none; margin: 0; padding: 0; }
.article-list li { padding: 14px 0; border-bottom: 1px dashed var(--border); }
.item-title { font-size: 17px; }
.item-summary {
  color: var(--text-light);
  font-size: 14px;
  margin: 6px 0;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.item-meta { display: flex; gap: 10px; align-items: center; }

/* ===== 分页 ===== */
.pagination { display: flex; gap: 6px; justify-content: center; padding: 24px 0 4px; }
.pagination a {
  min-width: 34px;
  text-align: center;
  padding: 6px 10px;
  border: 1px solid var(--border);
  background: var(--card-bg);
}
.pagination a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== 详情/单页 ===== */
.detail-main {
  max-width: var(--max-width);
  margin: 16px auto;
  padding: 32px;
  background: var(--card-bg);
  border: 1px solid var(--border);
}
.article-title { margin: 8px 0 12px; font-size: 26px; text-align: center; }
.article-meta {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  color: var(--text-light);
  font-size: 13px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.article-content { line-height: 1.9; font-size: 16px; padding-top: 20px; word-break: break-word; }
.article-content img { height: auto; }
.article-content table { border-collapse: collapse; width: 100%; }
.article-content table td, .article-content table th { border: 1px solid var(--border); padding: 6px 10px; }
.article-sibling { display: flex; flex-direction: column; gap: 8px; margin-top: 28px; font-size: 14px; }

/* ===== 页脚 ===== */
.site-footer { margin-top: 32px; background: var(--primary-dark); color: rgba(255, 255, 255, .85); }
.footer-links {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 16px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.links-group { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; font-size: 13px; }
.group-name { font-weight: 600; margin-right: 4px; }
.footer-info {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 16px 20px;
  text-align: center;
  font-size: 13px;
}
.footer-info p { margin: 4px 0; }

/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
  .header-inner { flex-direction: column; align-items: stretch; }
  .site-search input { flex: 1; width: auto; }
  .site-colleges { align-self: flex-start; }
  .site-colleges .colleges-menu { left: 0; right: auto; min-width: 100%; }
  .banner-slides { height: 200px; }
  .detail-main, .list-main { padding: 18px 14px; }
  .article-title { font-size: 22px; }
  /* 触屏无 hover：子菜单静态平铺（缩进列表），不做浮层 */
  .site-nav ul.sub-nav {
    display: block;
    position: static;
    border: none;
    box-shadow: none;
    background: transparent;
    min-width: 0;
    padding: 0 0 6px;
  }
  .site-nav .sub-nav li a { color: rgba(255, 255, 255, .9); padding: 8px 16px 8px 34px; }
  .site-nav .sub-nav li a:hover { background: var(--primary-dark); color: #fff; }
}

/* ===== warm-kinder 主题差异层（方案 §7：差异仅限 CSS + fragments）===== */
/* 圆角卡片 + 暖色系 */
.site-header { border-radius: 0 0 24px 24px; }
.site-footer { border-radius: 24px 24px 0 0; }
.banner, .banner-title { border-radius: 20px; overflow: hidden; }
.site-search input, .site-search button { border-radius: 999px; }
.footer-info p { color: var(--primary-dark); }