/* ============================================================
 * fresh-mint 皮肤包样式（blue-white 派生，docs/10 皮肤包契约 §5）
 * 清新薄荷风（卡片封面版）：主色 #17A2A2、浅薄荷底、白卡 12px 圆角 + 柔和阴影；
 * 细线吸顶顶栏 + 居中 logo；列表为带封面的卡片网格（一行 3 张）；几何圆点装饰。
 * 无纹理、无通栏大图、无复杂动效。
 * 轮播图设计尺寸约定：1920×560（管理端上传端按此引导裁剪）。
 * ============================================================ */
:root {
  --primary: #17A2A2;
  --primary-dark: #0F7C7C;
  --primary-soft: #E6F6F6;
  --bg: #F5FBFA;
  --card-bg: #FFFFFF;
  --border: #DCEDEB;
  --text: #1F2D2D;
  --text-light: #6B8382;

  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1200px;

  --shadow-card: 0 6px 18px rgba(15, 124, 124, .06);
  --shadow-hover: 0 14px 30px rgba(15, 124, 124, .13);
  --shadow-pop: 0 10px 26px rgba(15, 124, 124, .12);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background-color: var(--bg);
  background-image: radial-gradient(rgba(23, 162, 162, .10) 1.6px, transparent 1.6px);
  background-size: 28px 28px;
  background-attachment: fixed;
}
body.decor-plain { background-image: none; }
h1, h2, h3 { font-weight: 600; letter-spacing: .01em; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; }
time, .item-meta { color: var(--text-light); font-size: 13px; }
.empty {
  color: var(--text-light);
  text-align: center;
  padding: 36px 0;
  background: var(--card-bg);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

/* ===== 头部：细线顶栏 + 居中 logo + 吸顶 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(15, 124, 124, .05);
}
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 12px 16px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
}
.header-aside { display: flex; align-items: center; gap: 10px; min-width: 0; }
.header-aside-left { justify-self: start; }
.header-aside-right { justify-self: end; }

.site-brand { display: flex; align-items: center; gap: 12px; justify-self: center; }
.site-logo { height: 40px; width: auto; }
.site-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--primary-dark);
  letter-spacing: .02em;
  white-space: nowrap;
}

.site-search { display: flex; gap: 8px; }
.site-search input {
  border: 1px solid var(--border);
  background: var(--primary-soft);
  border-radius: 999px;
  padding: 8px 16px;
  width: 190px;
  font-size: 14px;
  color: var(--text);
  outline: none;
}
.site-search input::placeholder { color: #9bb6b5; }
.site-search input:focus { border-color: var(--primary); background: #fff; }
.site-search button {
  border: none;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  padding: 8px 20px;
  cursor: pointer;
}
.site-search button:hover { background: var(--primary-dark); color: #fff; }

/* ===== 专业院系下拉（院系子站切换，《院系子站方案》） ===== */
.site-colleges { position: relative; }
.site-colleges .colleges-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  padding: 7px 16px;
  cursor: pointer;
  color: var(--primary-dark);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
}
.site-colleges .colleges-toggle:hover { border-color: var(--primary); background: var(--primary-soft); }
.site-colleges .colleges-arrow { font-style: normal; font-size: 12px; color: var(--text-light); }
.site-colleges .colleges-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 200px;
  max-height: 420px;
  overflow-y: auto;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-pop);
  z-index: 210;
}
.site-colleges:hover .colleges-menu { display: block; }
.site-colleges .colleges-menu li a {
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  color: var(--text);
  white-space: nowrap;
}
.site-colleges .colleges-menu li a:hover { background: var(--primary-soft); color: var(--primary-dark); }
.site-colleges .colleges-menu li.active a { color: var(--primary-dark); font-weight: 600; background: var(--primary-soft); }

/* ===== 主导航：细线文字导航 + 薄荷下划线激活态 ===== */
.site-nav { background: transparent; border-top: 1px solid var(--border); }
.site-nav ul {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.site-nav > ul > li { position: relative; }
.site-nav li > a {
  display: block;
  padding: 13px 22px;
  color: var(--text);
  font-weight: 500;
  position: relative;
}
.site-nav > ul > li > a::before {
  content: "";
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 8px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform .18s ease;
}
.site-nav > ul > li:hover > a::before,
.site-nav > ul > li.active > a::before { transform: scaleX(1); }
.site-nav > ul > li:hover > a,
.site-nav > ul > li.active > a { color: var(--primary-dark); }
.site-nav li.has-sub > a::after { content: " ▾"; font-size: 12px; opacity: .7; }

/* ===== 二级下拉导航 ===== */
.site-nav ul.sub-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 178px;
  max-width: none;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-pop);
  z-index: 205;
}
.site-nav li:hover > .sub-nav { display: block; }
.site-nav .sub-nav li a {
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  color: var(--text);
  white-space: nowrap;
  background: none;
}
.site-nav .sub-nav li a::before { display: none; }
.site-nav .sub-nav li a:hover { background: var(--primary-soft); color: var(--primary-dark); }
.site-nav .sub-nav li.active a { color: var(--primary-dark); font-weight: 600; }

/* ===== 首页轮播（收窄 + 圆角，不做通栏大图） ===== */
.banner {
  position: relative;
  max-width: var(--max-width);
  margin: 24px auto 4px;
  padding: 0 16px;
}
.banner-slides {
  position: relative;
  height: 380px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.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: 16px;
  right: auto;
  bottom: 16px;
  max-width: 68%;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .92);
  color: var(--text);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.banner-dots {
  position: absolute;
  bottom: 24px;
  right: 32px;
  display: flex;
  gap: 8px;
}
.banner-dots button {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, .75);
  cursor: pointer;
}
.banner-dots button.active { background: var(--primary); transform: scale(1.25); }

/* ===== 通用区块：白卡 + 柔和阴影 ===== */
.top-strip, .category-block {
  max-width: var(--max-width);
  margin: 20px auto;
  padding: 22px 24px 24px;
  background: var(--card-bg);
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.section-title, .block-head h2 {
  margin: 0 0 16px;
  font-size: 19px;
  font-weight: 600;
  display: flex;
  align-items: center;
}
.section-title::before, .block-head h2::before {
  content: "";
  flex: none;
  width: 7px;
  height: 7px;
  margin-right: 26px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 12px 0 0 rgba(23, 162, 162, .32), 24px 0 0 rgba(23, 162, 162, .14);
}
.block-head { display: flex; align-items: baseline; justify-content: space-between; }
.more {
  font-size: 13px;
  color: var(--primary-dark);
  background: var(--primary-soft);
  border-radius: 999px;
  padding: 4px 14px;
  flex: none;
}

/* 头条推荐：卡片网格（listLayout=list 时回落为行列表） */
.top-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.top-grid li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  background: var(--primary-soft);
  border-radius: var(--radius-sm);
}
.top-grid li a {
  flex: 1;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.top-grid li time { flex: none; }
.top-grid.is-list { display: block; }
.top-grid.is-list li { background: transparent; padding: 11px 0; border-bottom: 1px solid var(--border); }
.top-grid.is-list li:last-child { border-bottom: none; }

/* 栏目区块：行列表 + 圆点标记 */
.block-list { list-style: none; margin: 0; padding: 0; }
.block-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
}
.block-list li:last-child { border-bottom: none; }
.block-list li a {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.block-list li a::before {
  content: "";
  flex: none;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--primary);
  opacity: .5;
}
.top-badge {
  flex: none;
  color: #fff;
  background: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 2px 10px;
  border-radius: 999px;
}

/* ===== 列表页：卡片网格（一行三张，支持封面） ===== */
.list-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 16px 48px;
  background: transparent;
  border: none;
}
.home-main { padding-bottom: 8px; }
.breadcrumb { color: var(--text-light); font-size: 13px; margin: 0 0 14px; }
.breadcrumb a { margin-right: 8px; }
.breadcrumb span { margin-left: 8px; color: var(--primary-dark); }
.page-title {
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

.article-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.article-list li {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease;
}
.article-list li:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.item-card { display: flex; flex-direction: column; height: 100%; }
.item-cover {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--primary-soft);
}
.item-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }
.item-body { display: flex; flex-direction: column; gap: 8px; padding: 16px 18px 18px; flex: 1; }
.item-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.item-summary {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.item-meta { display: flex; gap: 10px; align-items: center; margin-top: auto; padding-top: 4px; }

.article-list.is-list { display: block; }
.article-list.is-list li { margin-bottom: 14px; }
.article-list.is-list .item-card { flex-direction: row; align-items: center; gap: 18px; padding: 16px 20px; }
.article-list.is-list .item-cover { width: 190px; flex: none; aspect-ratio: 16 / 10; border-radius: var(--radius-sm); }
.article-list.is-list .item-body { padding: 0; }
.article-list.is-list .item-meta { margin-top: 4px; }

/* ===== 分页 ===== */
.pagination { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; padding: 36px 0 8px; }
.pagination a {
  min-width: 36px;
  text-align: center;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card-bg);
  color: var(--text-light);
}
.pagination a:hover { border-color: var(--primary); color: var(--primary-dark); }
.pagination a.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ===== 详情 / 单页 ===== */
.detail-main {
  max-width: 1000px;
  margin: 24px auto 48px;
  padding: 36px 40px 40px;
  background: var(--card-bg);
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}
.article-title { margin: 8px 0 14px; font-size: 27px; font-weight: 600; text-align: center; line-height: 1.45; }
.article-meta {
  display: flex;
  gap: 0;
  justify-content: center;
  flex-wrap: wrap;
  color: var(--text-light);
  font-size: 13px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.article-meta > * { padding: 0 12px; position: relative; }
.article-meta > * + *::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  margin-top: -2px;
  border-radius: 50%;
  background: var(--primary);
  opacity: .5;
}
.article-content { line-height: 1.95; font-size: 16px; padding-top: 24px; word-break: break-word; color: var(--text); }
.article-content p { margin: 0 0 16px; }
.article-content h1, .article-content h2, .article-content h3 { margin: 26px 0 12px; }
.article-content img { height: auto; border-radius: var(--radius-sm); }
.article-content a { color: var(--primary-dark); text-decoration: underline; text-underline-offset: 3px; }
.article-content blockquote {
  margin: 18px 0;
  padding: 12px 18px;
  background: var(--primary-soft);
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.article-content table { border-collapse: collapse; width: 100%; }
.article-content table td, .article-content table th { border: 1px solid var(--border); padding: 8px 12px; }
.article-sibling { display: flex; flex-direction: column; gap: 10px; margin-top: 32px; font-size: 14px; }
.article-sibling a {
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  background: var(--card-bg);
  border: 1px solid var(--border);
  color: var(--text-light);
}
.article-sibling a:hover { border-color: var(--primary); color: var(--primary-dark); }

/* ===== 页脚（浅薄荷底） ===== */
.site-footer {
  margin-top: 40px;
  background: var(--primary-soft);
  color: var(--text-light);
  border-top: 1px solid var(--border);
}
.footer-decor {
  height: 26px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.footer-decor::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 14px 0 0 rgba(23, 162, 162, .32), -14px 0 0 rgba(23, 162, 162, .32);
}
.footer-links {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 8px 16px 4px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.links-group { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; font-size: 13px; }
.group-name {
  font-weight: 600;
  color: var(--primary-dark);
  margin-right: 6px;
  padding-right: 16px;
  position: relative;
}
.group-name::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 4px;
  height: 4px;
  margin-top: -2px;
  border-radius: 50%;
  background: var(--primary);
  opacity: .5;
}
.links-group a { color: var(--text-light); }
.links-group a:hover { color: var(--primary-dark); }
.footer-info {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 14px 16px 26px;
  text-align: center;
  font-size: 13px;
}
.footer-info p { margin: 4px 0; }
.links-group a .link-logo,
.sp-links-row a .link-logo {
  height: 20px;
  width: auto;
  max-width: 64px;
  object-fit: contain;
  vertical-align: middle;
  margin-right: 4px;
  border-radius: 4px;
}

/* ===== 移动端适配 ===== */
@media (max-width: 768px) {
  .header-inner { grid-template-columns: 1fr; justify-items: center; gap: 12px; padding: 12px 14px; }
  .site-brand { order: 1; justify-self: center; }
  .header-aside-right { order: 2; justify-self: stretch; }
  .header-aside-left { order: 3; justify-self: center; }
  .site-search { flex: 1; }
  .site-search input { flex: 1; width: auto; min-width: 0; }
  .site-colleges .colleges-menu { left: 50%; right: auto; transform: translateX(-50%); min-width: 200px; }
  .site-nav ul { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; }
  .site-nav > ul > li > a { padding: 12px 16px; white-space: nowrap; }
  .site-nav > ul > li > a::before { left: 16px; right: 16px; }

  .banner { margin-top: 16px; }
  .banner-slides { height: 190px; }
  .banner-title { font-size: 13px; padding: 6px 14px; }
  .banner-dots { bottom: 14px; right: 20px; }

  .top-grid { grid-template-columns: 1fr; }
  .article-list { grid-template-columns: minmax(0, 1fr); }
  .article-list.is-list .item-card { flex-direction: column; align-items: stretch; }
  .article-list.is-list .item-cover { width: 100%; aspect-ratio: 16 / 9; }
  .top-strip, .category-block { padding: 18px 16px 20px; margin: 16px auto; }
  .detail-main { margin: 16px auto 32px; padding: 22px 18px 26px; }
  .article-title { font-size: 22px; }
  .article-content { font-size: 15px; }

  .site-nav ul.sub-nav {
    display: block;
    position: static;
    border: none;
    border-radius: var(--radius-sm);
    box-shadow: none;
    background: var(--primary-soft);
    min-width: 0;
    padding: 6px;
  }
  .site-nav .sub-nav li a { color: var(--text); padding: 8px 14px; }
}


/* ===== 左侧栏目导航（docs/11）：有二级节点的模块，栏目/文章页左侧展示兄弟目录 ===== */
.list-main.has-sidenav, .detail-main.has-sidenav { display: flex; align-items: flex-start; gap: 24px; }
.has-sidenav .list-body { flex: 1; min-width: 0; }
.side-nav { flex: none; width: 220px; background: var(--card-bg, #fff); border: 1px solid var(--border); overflow: hidden; }
.side-nav-head { background: var(--primary); color: #fff; font-size: 20px; font-weight: 700; text-align: center; padding: 18px 12px; letter-spacing: 2px; }
.side-nav-list { list-style: none; margin: 0; padding: 0; }
.side-nav-item + .side-nav-item { border-top: 1px dashed var(--border); }
.side-nav-item a { display: block; padding: 12px 16px; color: var(--text); text-decoration: none; font-size: 15px; transition: background .15s ease, color .15s ease; }
.side-nav-item a:hover { color: var(--primary); background: var(--bg); }
.side-nav-item.active a { background: var(--primary); color: #fff; font-weight: 600; text-decoration: none; }
/* 顶导航二级下拉当前项高亮（docs/11 顺带） */
.site-nav ul.sub-nav li.active a { color: var(--primary); }
@media (max-width: 768px) {
  .list-main.has-sidenav, .detail-main.has-sidenav { flex-direction: column; gap: 12px; }
  .side-nav { width: 100%; }
  .side-nav-list { display: flex; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .side-nav-item { flex: none; }
  .side-nav-item + .side-nav-item { border-top: none; border-left: 1px dashed var(--border); }
  .side-nav-item a { white-space: nowrap; }
}
@media print {
  .side-nav { display: none; }
  .list-main.has-sidenav, .detail-main.has-sidenav { display: block; }
}