/*
 * 文件作用：
 * ipetmed 知识科普列表页（/knowledge/ 及 /category/knowledge/{系列}/）的页面样式。
 * 页面主体由 pmgr-site-frontend.php 的 pmgr_sf_render_knowledge_hub() 输出，
 * 结构：.pmgr-kh > .pmgr-kh-head + .pmgr-kh-cols（左 .pmgr-kh-left 系列导航 / 右 .pmgr-kh-main 分组卡片）。
 *
 * 视觉对齐商城分类页（wc.css 的三栏布局）：灰底 #eaecf0、白色卡片、品牌红强调、
 * 标题红色下划线。只对 body.pmgr-page-knowledge 生效，不影响其它页面。
 *
 * 2026-08-31 新增。
 */

/* ── 页面底色 + 为固定导航留出顶部空间 ── */
body.pmgr-page-knowledge {
  background: #eaecf0 !important;
  color: #1a1a1d;
  padding-top: var(--pmgr-nav-height, 84px) !important;
}

/* Blocksy 自带的容器限宽 / 内边距全部清掉，由本页自己控制宽度 */
body.pmgr-page-knowledge #main-container,
body.pmgr-page-knowledge main.site-main,
body.pmgr-page-knowledge .ct-container,
body.pmgr-page-knowledge .ct-container-full {
  max-width: none !important;
  padding: 0 !important;
  margin: 0 !important;
}

/* ── 标题区：居中 + 红色下划线（与分类页标题同款） ── */
body.pmgr-page-knowledge .pmgr-kh-head {
  text-align: center;
  padding: 40px 24px 8px;
}

body.pmgr-page-knowledge .pmgr-kh-title {
  display: inline-block;
  margin: 0;
  padding-bottom: 12px;
  color: #1a1a1d;
  font-size: 28px;
  font-weight: 700;
  border-bottom: 2px solid var(--pmgr-red, #C8102E);
}

body.pmgr-page-knowledge .pmgr-kh-sub {
  margin: 12px 0 0;
  color: #60636b;
  font-size: 14px;
}

/* ── 两栏：左系列导航 240px（sticky）/ 右内容 ── */
body.pmgr-page-knowledge .pmgr-kh-cols {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 28px;
  max-width: 1480px;
  margin: 24px auto 60px;
  padding: 0 24px;
  align-items: start;
  box-sizing: border-box;
}

body.pmgr-page-knowledge .pmgr-kh-left {
  background: #ffffff;
  border: 1px solid #e5e6ea;
  border-radius: 10px;
  padding: 16px 12px;
  position: sticky;
  top: calc(var(--pmgr-nav-height, 84px) + 16px);
  font-size: 13px;
  line-height: 1.5;
}

body.pmgr-page-knowledge .pmgr-kh-nav-title {
  font-size: 14px;
  font-weight: 700;
  color: #1a1a1d;
  margin: 0 0 12px;
  padding: 0 4px 10px;
  border-bottom: 2px solid var(--pmgr-red, #C8102E);
  letter-spacing: 0.5px;
}

body.pmgr-page-knowledge .pmgr-kh-nav {
  list-style: none;
  margin: 0;
  padding: 0;
}

body.pmgr-page-knowledge .pmgr-kh-nav li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  color: #3a3a40;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

body.pmgr-page-knowledge .pmgr-kh-nav li a span {
  flex-shrink: 0;
  min-width: 22px;
  padding: 1px 7px;
  border-radius: 999px;
  background: #f0f1f4;
  color: #8a8c93;
  font-size: 11px;
  text-align: center;
}

body.pmgr-page-knowledge .pmgr-kh-nav li a:hover {
  background: #f6f6f8;
  color: var(--pmgr-red, #C8102E);
}

/* 当前系列：红底白字（与分类树当前项一致） */
body.pmgr-page-knowledge .pmgr-kh-nav li.is-current a {
  background: var(--pmgr-red, #C8102E);
  color: #ffffff;
  font-weight: 600;
}

body.pmgr-page-knowledge .pmgr-kh-nav li.is-current a span {
  background: rgba(255, 255, 255, 0.22);
  color: #ffffff;
}

/* ── 右栏：系列分组 ── */
body.pmgr-page-knowledge .pmgr-kh-main {
  min-width: 0;
}

body.pmgr-page-knowledge .pmgr-kh-series + .pmgr-kh-series {
  margin-top: 36px;
}

body.pmgr-page-knowledge .pmgr-kh-series-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 14px;
  padding-left: 12px;
  border-left: 4px solid var(--pmgr-red, #C8102E);
  color: #1a1a1d;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.3;
}

body.pmgr-page-knowledge .pmgr-kh-series-title small {
  color: #8a8c93;
  font-size: 13px;
  font-weight: 400;
}

body.pmgr-page-knowledge .pmgr-kh-series-desc {
  margin: -6px 0 14px 16px;
  color: #60636b;
  font-size: 14px;
}

/* 文章卡片网格：3 列 */
body.pmgr-page-knowledge .pmgr-kh-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

body.pmgr-page-knowledge .pmgr-kh-card {
  margin: 0;
  background: #ffffff;
  border: 1px solid #d9dde3;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 1px 2px rgba(20, 24, 32, 0.05);
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

body.pmgr-page-knowledge .pmgr-kh-card:hover {
  transform: translateY(-2px);
  border-color: #c9ced6;
  box-shadow: 0 8px 22px rgba(20, 24, 32, 0.10);
}

body.pmgr-page-knowledge .pmgr-kh-card > a {
  display: flex;
  flex-direction: column;
  height: 100%;
  color: inherit;
  text-decoration: none;
}

/* 封面：16:9，cover 裁切，底部一条细分隔线 */
body.pmgr-page-knowledge .pmgr-kh-thumb {
  margin: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #101114;
  border-bottom: 1px solid #eceef2;
}

body.pmgr-page-knowledge .pmgr-kh-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

body.pmgr-page-knowledge .pmgr-kh-thumb--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  letter-spacing: 2px;
}

body.pmgr-page-knowledge .pmgr-kh-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px 16px 16px;
  flex: 1;
}

body.pmgr-page-knowledge .pmgr-kh-tag {
  align-self: flex-start;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(200, 16, 46, 0.08);
  color: var(--pmgr-red, #C8102E);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

body.pmgr-page-knowledge .pmgr-kh-card-title {
  margin: 0;
  color: #1a1a1d;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
}

body.pmgr-page-knowledge .pmgr-kh-card:hover .pmgr-kh-card-title {
  color: var(--pmgr-red, #C8102E);
}

body.pmgr-page-knowledge .pmgr-kh-excerpt {
  margin: 0;
  color: #555a63;
  font-size: 13px;
  line-height: 1.7;
}

body.pmgr-page-knowledge .pmgr-kh-date {
  margin-top: auto;
  padding-top: 6px;
  color: #9a9ca3;
  font-size: 12px;
}

body.pmgr-page-knowledge .pmgr-kh-empty {
  max-width: 1480px;
  margin: 24px auto 60px;
  padding: 40px 24px;
  text-align: center;
  color: #60636b;
}

/* ── 响应式：≤1023 单列（系列导航横向滚动）；≤639 卡片单列 ── */
@media (max-width: 1023px) {
  body.pmgr-page-knowledge .pmgr-kh-cols {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 20px;
  }

  body.pmgr-page-knowledge .pmgr-kh-left {
    position: static;
    padding: 12px;
  }

  body.pmgr-page-knowledge .pmgr-kh-nav {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  body.pmgr-page-knowledge .pmgr-kh-nav li a {
    white-space: nowrap;
    background: #f4f4f6;
  }

  body.pmgr-page-knowledge .pmgr-kh-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 639px) {
  body.pmgr-page-knowledge .pmgr-kh-head {
    padding: 28px 16px 4px;
  }

  body.pmgr-page-knowledge .pmgr-kh-title {
    font-size: 24px;
  }

  body.pmgr-page-knowledge .pmgr-kh-cols {
    padding: 0 16px;
  }

  body.pmgr-page-knowledge .pmgr-kh-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}