/* ============================================================
   wiki.css —— 知识库
   ============================================================ */
.wiki { padding: 22px 0 40px; }
.wiki-wrap {
  display: grid; gap: 20px;
  grid-template-columns: 262px minmax(0, 1fr);
  align-items: start;
}
.wiki-wrap.has-toc { grid-template-columns: 262px minmax(0, 1fr) 208px; }
@media (max-width: 1080px) {
  .wiki-wrap.has-toc { grid-template-columns: 262px minmax(0, 1fr); }
  .wiki-toc { display: none !important; }
}
@media (max-width: 820px) {
  .wiki-wrap, .wiki-wrap.has-toc { grid-template-columns: 1fr; }
  .wiki-side { position: static !important; max-height: none !important; }
}

/* ---------------- 左侧栏 ---------------- */
.wiki-side {
  position: sticky; top: calc(var(--header-h) + 20px);
  max-height: calc(100vh - var(--header-h) - 42px); overflow-y: auto;
  padding-right: 4px; display: flex; flex-direction: column; gap: 16px;
}
.side-search { position: relative; display: flex; align-items: center; }
.side-search i.fa-search {
  position: absolute; left: 12px; color: var(--text-mute); font-size: 13px; pointer-events: none;
}
.side-search .input { padding-left: 33px; padding-right: 34px; }
.side-search .x-close { position: absolute; right: 6px; }
.side-head .side-count {
  font-size: 11.5px; color: var(--text-mute); background: var(--panel-2);
  padding: 1px 7px; border-radius: 6px;
}
.side-block {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 13px 12px;
}
.side-head {
  display: flex; align-items: center; gap: 7px; font-size: 13px;
  color: var(--text-dim); letter-spacing: .6px; margin-bottom: 10px; font-weight: 600;
}
.side-head i { color: var(--yellow); }
.side-head .spacer { flex: 1; }

/* 分类树 */
.cat-tree { font-size: 13.5px; }
.cat-node { user-select: none; }
.cat-row {
  display: flex; align-items: center; gap: 6px; padding: 6px 8px;
  border-radius: 8px; cursor: pointer; color: var(--text-dim); transition: .16s;
}
.cat-row:hover { background: var(--panel-2); color: var(--text); }
.cat-row.active { background: rgba(253, 218, 95, .12); color: var(--yellow); font-weight: 600; }
.cat-row .caret {
  width: 14px; text-align: center; font-size: 10px; transition: transform .2s; color: var(--text-mute);
}
.cat-node.open > .cat-row .caret { transform: rotate(90deg); }
.cat-row .cname { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cat-row .cnum { font-size: 11px; color: var(--text-mute); font-variant-numeric: tabular-nums; }
.cat-children {
  display: none; margin-left: 12px; padding-left: 9px; border-left: 1px dashed var(--border);
}
.cat-node.open > .cat-children { display: block; }

.side-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.side-tags .tag { font-size: 11.5px; }

.side-recent { display: flex; flex-direction: column; gap: 2px; }
.side-recent a {
  font-size: 12.8px; color: var(--text-dim); padding: 5px 8px; border-radius: 7px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; transition: .16s;
}
.side-recent a:hover { background: var(--panel-2); color: var(--yellow); }

/* ---------------- 内容区 ---------------- */
.wiki-main { min-width: 0; }
.wiki-view {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px 26px 30px; min-height: 60vh;
}
@media (max-width: 560px) { .wiki-view { padding: 18px 15px 24px; } }

.wiki-crumb { font-size: 12.5px; color: var(--text-mute); margin-bottom: 14px; }
.wiki-crumb a { color: var(--text-dim); }
.wiki-crumb a:hover { color: var(--cyan); }
.wiki-crumb .sep { margin: 0 6px; opacity: .5; }

.wiki-h1 { margin: 0 0 6px; font-size: 25px; letter-spacing: .5px; }
.wiki-sub { margin: 0 0 22px; color: var(--text-mute); font-size: 13.5px; }

/* 首页：标签分组 */
.tag-group { margin-bottom: 26px; }
.tag-group-head {
  display: flex; align-items: center; gap: 9px; margin-bottom: 11px;
  padding-bottom: 8px; border-bottom: 1px solid var(--border);
}
.tag-group-head .tg-name {
  font-size: 15px; font-weight: 700; color: var(--yellow);
}
.tag-group-head .tg-num { font-size: 11.5px; color: var(--text-mute); }
.tag-group-head .tg-more { margin-left: auto; font-size: 12px; color: var(--cyan); }
.tag-group-head .tg-more:hover { color: #fff; }
.tg-list { display: grid; gap: 9px; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.tg-item {
  display: flex; gap: 10px; align-items: flex-start; padding: 11px 13px;
  border-radius: 10px; background: rgba(255, 255, 255, .035);
  border: 1px solid var(--border); cursor: pointer; transition: .18s;
}
.tg-item:hover { background: var(--panel-2); border-color: var(--border-2); transform: translateY(-2px); }
.tg-item i { color: var(--cyan); margin-top: 3px; font-size: 12px; }
.tg-item .t { font-size: 13.8px; line-height: 1.5; }
.tg-item .t:hover { color: var(--yellow); }
.tg-item .d { font-size: 11.5px; color: var(--text-mute); margin-top: 3px; }

/* 文章列表 */
.art-cards { display: grid; gap: 13px; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.art-card {
  padding: 16px 17px; border-radius: var(--radius); border: 1px solid var(--border);
  background: rgba(255, 255, 255, .032); cursor: pointer; transition: .2s;
  display: flex; flex-direction: column; gap: 8px;
}
.art-card:hover { border-color: var(--border-2); background: var(--panel-2); transform: translateY(-3px); }
.art-card h3 { margin: 0; font-size: 15.5px; line-height: 1.5; }
.art-card:hover h3 { color: var(--yellow); }
.art-card p {
  margin: 0; font-size: 12.8px; color: var(--text-mute); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.art-card .ac-foot { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 11.5px; color: var(--text-mute); }
.art-card .ac-foot .cat { color: var(--blue); }

/* 文章详情 */
.art-head { border-bottom: 1px solid var(--border); padding-bottom: 18px; margin-bottom: 22px; }
.art-head h1 { margin: 0 0 12px; font-size: clamp(22px, 3.4vw, 30px); line-height: 1.35; }
.art-head .ah-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: var(--text-mute); }
.art-head .ah-meta i { margin-right: 5px; }
.art-head .ah-tags { display: flex; gap: 7px; flex-wrap: wrap; margin-top: 13px; }

.art-nav { display: flex; gap: 12px; margin-top: 34px; padding-top: 20px; border-top: 1px solid var(--border); }
.art-nav a {
  flex: 1; padding: 12px 14px; border-radius: 10px; background: rgba(255, 255, 255, .035);
  border: 1px solid var(--border); font-size: 13px; transition: .18s; min-width: 0;
}
.art-nav a:hover { border-color: var(--cyan); background: var(--panel-2); }
.art-nav a span { display: block; font-size: 11.5px; color: var(--text-mute); margin-bottom: 4px; }
.art-nav a b { font-weight: 500; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.art-nav .to-next { text-align: right; }

/* 目录 */
.wiki-toc {
  position: sticky; top: calc(var(--header-h) + 20px);
  max-height: calc(100vh - var(--header-h) - 42px); overflow-y: auto;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 13px 10px; display: none;
}
.wiki-toc.show { display: block; }
.wiki-toc .toc-title {
  font-size: 12px; color: var(--text-mute); letter-spacing: 1px;
  padding: 0 8px 9px; border-bottom: 1px solid var(--border); margin-bottom: 8px;
}

/* 搜索结果 */
.search-stat { font-size: 13px; color: var(--text-dim); margin-bottom: 16px; }
.search-stat b { color: var(--yellow); }
mark { background: rgba(253, 218, 95, .3); color: #fff8dd; border-radius: 3px; padding: 0 2px; }