/* site.css —— 站点骨架：只负责「内容块外面」的布局 */

:root {
  --ink: #1f2328;
  --ink-2: #4a5259;
  --ink-3: #7b848c;
  --line: #e6e1d8;
  --bg: #fbfaf7;
  --paper: #ffffff;
  --accent: #9a6b3f;
  --accent-2: #c9a227;
  --radius: 10px;
  --wrap: 1080px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--ink); color: #fff; padding: 8px 14px; z-index: 99;
}
.skip:focus { left: 8px; top: 8px; }

/* ---------------------------------------------------------------- 顶栏 */

.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(251, 250, 247, .88);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap {
  display: flex; align-items: center; gap: 20px;
  height: 60px;
}
.brand { display: flex; align-items: baseline; gap: 10px; color: var(--ink); }
.brand:hover { text-decoration: none; }
.brand-name { font-weight: 700; font-size: 17px; letter-spacing: .02em; }
.brand-tag { font-size: 12px; color: var(--ink-3); }

.searchbox { margin-left: auto; }
.searchbox input {
  width: 190px; height: 34px; padding: 0 12px;
  border: 1px solid var(--line); border-radius: 999px;
  background: var(--paper); color: var(--ink); font-size: 13px;
  transition: width .18s ease, border-color .18s;
}
.searchbox input:focus { outline: none; width: 240px; border-color: var(--accent); }

/* ---------------------------------------------------------------- 两栏 */

.shell {
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  gap: 40px;
  padding-top: 32px;
  padding-bottom: 64px;
  align-items: start;
}

.side { position: sticky; top: 84px; font-size: 14px; }
.side ul { list-style: none; margin: 0; padding: 0; }
.side ul ul { padding-left: 12px; border-left: 1px solid var(--line); margin: 2px 0 6px 6px; }
.side li { margin: 1px 0; }
.side a {
  display: block; padding: 5px 8px; border-radius: 6px;
  color: var(--ink-2); line-height: 1.4;
}
.side a:hover { background: #f1ece3; color: var(--ink); text-decoration: none; }
.side li.on > a { background: #f3ebdf; color: var(--accent); font-weight: 600; }
.side .nav-l0 > li { margin-bottom: 4px; }
.side .nav-l0 > li > a { font-weight: 600; color: var(--ink); }
.side .nv-group {
  display: block; padding: 5px 8px;
  font-size: 12px; color: var(--ink-3); letter-spacing: .08em;
}

.main { min-width: 0; }

/* 阅读宽度来自 config/site.json 的 layout.content_width，由 layout.php 写成 CSS 变量。
   只限制正文容器，不限制首页卡片网格——列表页更宽一些更好用。 */
.doc { max-width: var(--content-w, 720px); }

/* 关掉侧栏时收成单列并居中，避免留一条 216px 的空槽 */
.shell.no-side { grid-template-columns: minmax(0, 1fr); }
.shell.no-side .main { max-width: var(--content-w, 720px); margin: 0 auto; }

/* ---------------------------------------------------------------- 通用件 */

.crumbs { font-size: 13px; color: var(--ink-3); margin-bottom: 18px; }
.crumbs .sep { margin: 0 6px; color: #c8c2b8; }
.crumbs .cur { color: var(--ink-2); }

.page-title {
  font-size: 26px; line-height: 1.35; margin: 0 0 12px; letter-spacing: -.01em;
}
.lede { color: var(--ink-2); margin: 0 0 22px; font-size: 15px; }
.muted { color: var(--ink-3); font-size: 14px; }
.dot { margin: 0 6px; color: #c8c2b8; }

.badge {
  display: inline-block; font-size: 11px; line-height: 1;
  padding: 3px 7px; border-radius: 999px;
  background: #f3ebdf; color: var(--accent); vertical-align: 1px;
}

.block { margin: 28px 0; }
.block-h {
  font-size: 13px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink-3); font-weight: 600; margin: 0 0 12px;
  padding-bottom: 8px; border-bottom: 1px solid var(--line);
}

.chips, .subcats { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0 0; }
.chip {
  display: inline-block; padding: 4px 11px; border-radius: 999px;
  background: var(--paper); border: 1px solid var(--line);
  font-size: 13px; color: var(--ink-2);
}
.chip:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }

/* 首页分类卡片 */
.cat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; margin-top: 8px; }
.cat-card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 20px 16px;
}
.cat-card h2 { font-size: 17px; margin: 0; }
.cat-card h2 a { color: var(--ink); }
.cat-card .plain { list-style: none; margin: 14px 0 0; padding: 0; }
.cat-card .plain li { display: flex; gap: 8px; align-items: baseline; padding: 4px 0; font-size: 14px; }
.cat-card .plain li a { color: var(--ink-2); }

.hero { margin: 4px 0 30px; }
.hero h1 { font-size: 30px; margin: 0 0 10px; letter-spacing: -.02em; }

.empty {
  border: 1px dashed var(--line); border-radius: var(--radius);
  padding: 24px; background: var(--paper);
}
.hint { font-size: 13px; color: var(--ink-3); margin: 6px 0 0; }
code { background: #f1ece3; padding: 1px 5px; border-radius: 4px; font-size: .92em; }

/* 条目列表 */
.item-list { list-style: none; margin: 0; padding: 0; }
.item-row { padding: 16px 0; border-bottom: 1px solid var(--line); }
.item-row:last-child { border-bottom: 0; }
.item-main { display: flex; align-items: baseline; gap: 10px; }
.item-title { font-size: 16px; font-weight: 600; color: var(--ink); }
.item-title:hover { color: var(--accent); }
.item-sub { margin: 6px 0 0; color: var(--ink-2); font-size: 14px; }
.item-meta { margin: 6px 0 0; color: var(--ink-3); font-size: 12.5px; }

/* 目录页 */
.item-head { margin-bottom: 26px; }
.toc-list { list-style: none; margin: 0; padding: 0; counter-reset: none; }
.toc-list li { border-bottom: 1px solid var(--line); }
.toc-list a { display: flex; gap: 14px; align-items: baseline; padding: 13px 2px; color: var(--ink); }
.toc-list a:hover { text-decoration: none; color: var(--accent); }
.toc-list .num { font-size: 12px; color: var(--ink-3); font-variant-numeric: tabular-nums; width: 22px; flex: none; }
.toc-list .ttl { font-weight: 500; }
.toc-list .snip { color: var(--ink-3); font-size: 13px; margin-left: auto; max-width: 46%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 正文页 */
.doc { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 48px 44px; }
.doc-head { margin-bottom: 26px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.doc-head h1 { font-size: 27px; line-height: 1.35; margin: 0; letter-spacing: -.01em; }
.doc-kicker { margin: 0 0 8px; font-size: 12.5px; color: var(--ink-3); letter-spacing: .04em; }
.doc-meta { margin: 8px 0 0; font-size: 12.5px; color: var(--ink-3); }

.toc-inline { margin: 0 0 26px; padding: 12px 16px; background: #faf7f1; border: 1px solid var(--line); border-radius: 8px; font-size: 13.5px; }
.toc-inline summary { cursor: pointer; color: var(--ink-3); font-size: 12.5px; letter-spacing: .04em; }
.toc-inline ul { list-style: none; margin: 10px 0 0; padding: 0; }
.toc-inline li { padding: 2px 0; }
.toc-inline li.lv3 { padding-left: 16px; font-size: 13px; }
.toc-inline a { color: var(--ink-2); }

.pager { display: flex; justify-content: space-between; gap: 16px; margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--line); }
.pager a { display: flex; flex-direction: column; gap: 3px; max-width: 46%; font-weight: 600; color: var(--ink); }
.pager a span { font-size: 12px; color: var(--ink-3); font-weight: 400; }
.pager a:hover { color: var(--accent); text-decoration: none; }
.pager .next { margin-left: auto; text-align: right; }

/* 搜索页 */
.search-big input {
  width: 100%; height: 44px; padding: 0 16px; font-size: 15px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--paper); color: var(--ink);
}
.search-big input:focus { outline: none; border-color: var(--accent); }
.results { margin-top: 22px; }

/* 页脚 */
.foot { border-top: 1px solid var(--line); padding: 26px 0 40px; color: var(--ink-3); font-size: 13px; }

/* 手机 */
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; gap: 20px; padding-top: 20px; }
  .side { position: static; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper); padding: 12px 14px; }
  .side .nav-l0 > li > a { padding-left: 0; }
  .side ul ul { border-left: 0; padding-left: 10px; }
  .doc { padding: 26px 20px 30px; }
  .doc-head h1 { font-size: 22px; }
  .brand-tag { display: none; }
  .searchbox input { width: 140px; }
  .searchbox input:focus { width: 160px; }
  .toc-list .snip { display: none; }
}


/* ---------------------------------------------------------------- 广告位 */
/* 只占位不加载真实广告：本地环境 AdSense 不投放，这里给一个可辨识的空槽，
   免得站长以为「代码没注入」而反复排查 */
.ad-slot {
  margin: 24px 0; padding: 4px;
  border: 1px dashed var(--line); border-radius: var(--radius);
  background: #fdfcf9; min-height: 90px;
  display: flex; align-items: center; justify-content: center;
}
.ad-lead { padding-top: 24px; }
.ad-tail { padding-bottom: 24px; }

/* ---------------------------------------------------------------- 标签 */
.tagline { display: flex; flex-wrap: wrap; gap: 6px; margin: 26px 0 4px; }
.tag {
  font-size: 12.5px; padding: 3px 10px; border-radius: 999px;
  background: #f1ece2; color: var(--ink-2); text-decoration: none;
}
.tag:hover { background: var(--accent); color: #fff; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; }
.tag-cloud .cnum { margin-left: 6px; font-size: 11.5px; color: var(--ink-3); }

/* ---------------------------------------------------------------- 置顶 */
.pin {
  display: inline-block; min-width: 16px; height: 16px; line-height: 16px;
  padding: 0 4px; margin-right: 6px; border-radius: 4px;
  background: #b45309; color: #fff; font-size: 11px; text-align: center;
  vertical-align: 1px;
}

/* 层级过深时折叠的中间层 */
.crumbs .ellipsis { color: var(--ink-3); letter-spacing: 1px; }

/* ---- 列表分页 ---- */
.pager-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.pager-nav .pg-btn { font-weight: 600; color: var(--ink); white-space: nowrap; }
.pager-nav .pg-info { font-size: 13px; color: var(--ink-3); }

/* ---------------------------------------------------------------- 首页丰富模块 */

.home-stats {
  display: flex; flex-wrap: wrap; gap: 6px 22px;
  margin: 18px 0 0; padding: 10px 16px;
  background: #faf7f0; border: 1px dashed var(--line); border-radius: 10px;
  font-size: 13px; color: var(--ink-3); width: fit-content;
}
.home-stats strong { color: var(--accent); font-size: 15px; }

.sec-h {
  font-size: 14px; letter-spacing: .06em; color: var(--ink-2);
  margin: 38px 0 14px; padding-left: 10px;
  border-left: 3px solid var(--accent); line-height: 1.2;
}

/* 置顶精选大卡：封面图 + 渐变压暗 + 悬浮上浮 */
.feat-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px;
}
.feat-card {
  display: flex; flex-direction: column; position: relative;
  background: var(--paper); border: 1px solid var(--line); border-radius: 14px;
  overflow: hidden; color: inherit;
  box-shadow: 0 1px 3px rgba(90, 70, 40, .06);
  transition: transform .18s ease, box-shadow .18s ease;
}
.feat-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(90, 70, 40, .16);
  text-decoration: none;
}
.feat-card .fcov {
  position: relative; aspect-ratio: 16 / 9; overflow: hidden;
  background: linear-gradient(135deg, #efe4d2, #e2d2b8);
}
.feat-card .fcov img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  transition: transform .35s ease;
}
.feat-card:hover .fcov img { transform: scale(1.04); }
.feat-card.noimg .fcov { background: linear-gradient(135deg, #f1e9da, #dcc9a8); }
.feat-card.noimg .fcov::after {
  content: '✦'; position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 42px; color: rgba(154, 107, 63, .35);
}
.feat-card .fbadge {
  position: absolute; left: 10px; top: 10px;
  font-size: 11px; padding: 2px 9px; border-radius: 99px;
  background: rgba(255, 255, 255, .88); color: var(--accent); font-weight: 600;
  backdrop-filter: blur(2px);
}
.feat-card .fbd { padding: 14px 16px 15px; display: flex; flex-direction: column; flex: 1; }
.feat-card h3 { font-size: 16px; margin: 0 0 6px; color: var(--ink); line-height: 1.45; }
.feat-card:hover h3 { color: var(--accent); }
.feat-card p {
  font-size: 13px; color: var(--ink-3); margin: 0; line-height: 1.6; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.feat-card .fmeta { font-size: 12px; color: var(--ink-3); margin-top: 10px; opacity: .8; }

/* 最新更新列表 */
.recent-list { list-style: none; margin: 0; padding: 0; }
.recent-list li {
  display: flex; align-items: baseline; gap: 12px;
  padding: 9px 4px; border-bottom: 1px dashed var(--line); font-size: 14px;
}
.recent-list li:last-child { border-bottom: 0; }
.recent-list time { flex: none; font-size: 12.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.recent-list a { color: var(--ink); font-weight: 500; }
.recent-list a:hover { color: var(--accent); }
.recent-list .rparent {
  flex: none; margin-left: auto; max-width: 40%;
  font-size: 12px; color: var(--ink-3);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* 标签云 */
.tagcloud { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; }
.tchip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 12px; border-radius: 99px;
  background: var(--paper); border: 1px solid var(--line);
  font-size: 13px; color: var(--ink-2);
  transition: border-color .15s, color .15s, transform .15s;
}
.tchip:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); text-decoration: none; }
.tchip i {
  font-style: normal; font-size: 11px; color: var(--ink-3);
  background: #f3ebdf; border-radius: 99px; padding: 1px 7px;
}

@media (max-width: 640px) {
  .home-stats { width: auto; }
  .recent-list .rparent { display: none; }
}