/* catalog 主题 —— 「索引卡」
   世界：图书馆卡片抽屉、打字机条目、票根。卡片是平纸片：顶部类别耳片、
   发丝线、无阴影；无图封面用大号数字（年份/耗时）站住；详情页是一张
   打字条目单：<dl> 逐行 label:value。 */

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-dark);
  background: var(--c-light);
}

.wrap { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 52rem; }

a { color: var(--c-accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 4px; }

:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; }

/* ---------- 顶栏 ---------- */

.topbar { background: var(--c-light); border-bottom: 1px solid var(--c-line); }
.topbar-in { display: flex; align-items: center; gap: 26px; min-height: 58px; flex-wrap: wrap; padding: 8px 0; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--c-dark); }
.brand:hover { text-decoration: none; }
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  background: var(--c-accent); color: var(--c-light);
  font-weight: 700; border-radius: var(--radius);
}
.brand-name { font-weight: 700; font-size: 17px; }
.topnav { display: flex; flex-wrap: wrap; gap: 4px 18px; margin-left: auto; }
.topnav a { color: var(--c-dark); font-size: 15px; }
.topnav a:hover { color: var(--c-accent); text-decoration: none; border-bottom: 2px solid var(--c-accent); }

/* ---------- 页头 / 侧栏 ---------- */

.page-head { padding: 34px 0 22px; }
.page-title { font-size: clamp(1.6rem, 3.5vw, 2.2rem); font-weight: 800; letter-spacing: .01em; }
.page-sub { margin-top: 6px; opacity: .75; }
.page-count { margin-top: 4px; font-size: 14px; opacity: .6; font-variant-numeric: tabular-nums; }

.shell { display: grid; grid-template-columns: 220px 1fr; gap: 40px; align-items: start; padding-bottom: 56px; }
.rail { position: sticky; top: 20px; }
.rail-h {
  font-size: 13px; font-weight: 700; letter-spacing: .12em;
  color: var(--c-accent); margin: 22px 0 10px;
}
.rail-h:first-child { margin-top: 0; }
.rail-list { list-style: none; }
.rail-list a {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 6px 10px; color: var(--c-dark); border-radius: var(--radius);
}
.rail-list a em { font-style: normal; font-size: 13px; opacity: .55; font-variant-numeric: tabular-nums; }
.rail-list a:hover, .rail-list a.active { background: var(--c-muted); text-decoration: none; }
.rail-list a.active { box-shadow: inset 2px 0 0 var(--c-accent); }

@media (max-width: 880px) {
  .shell { grid-template-columns: 1fr; }
  .rail { position: static; }
}

/* ---------- 索引卡网格 ---------- */

.igrid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(196px, 1fr));
  gap: 22px;
}
.igrid.wide { grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }

.icard {
  display: flex; flex-direction: column;
  border: 1px solid var(--c-line); background: var(--c-light);
  border-radius: var(--radius); overflow: hidden;
}
.icard:hover { border-color: var(--c-line-dark); }
.icard-cover {
  display: flex; flex-direction: column; justify-content: flex-end; align-items: flex-start;
  aspect-ratio: 5 / 7; padding: 14px;
  background: var(--c-muted); border-bottom: 1px solid var(--c-line);
  color: var(--c-dark); position: relative;
}
.icard-cover::after {
  content: ""; position: absolute; inset: 8px;
  border: 1px solid var(--c-line-dark); border-radius: 2px; pointer-events: none;
}
.cover-big {
  font-size: clamp(2rem, 4vw, 2.9rem); font-weight: 800; line-height: 1.1;
  font-variant-numeric: tabular-nums; letter-spacing: .01em;
}
.cover-cat { font-size: 1.4rem; }
.cover-label { font-size: 13px; opacity: .6; margin-top: 2px; }
.icard-cover img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; border-radius: 0;
}
.icard-body { display: flex; flex-direction: column; gap: 6px; padding: 12px 14px 14px; }
.icard-tab {
  align-self: flex-start; font-size: 12.5px; color: var(--c-accent);
  border-bottom: 2px solid var(--c-accent); padding-bottom: 1px;
}
.icard-title { font-size: 16px; line-height: 1.45; font-weight: 700; }
.icard-title a { color: var(--c-dark); }
.icard-title a:hover { color: var(--c-accent); text-decoration: none; }
.icard-facts { display: flex; flex-wrap: wrap; gap: 2px 14px; font-size: 13px; }
.ifact { opacity: .72; font-variant-numeric: tabular-nums; }
.ifact i { font-style: normal; opacity: .6; margin-right: 3px; }
.icard-sum {
  font-size: 13.5px; color: var(--c-dark); opacity: .68;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* ---------- 详情页：条目单 ---------- */

.crumb { font-size: 14px; opacity: .78; padding: 20px 0 0; }
.crumb span { margin: 0 6px; }

.sheet {
  background: var(--c-light); border: 1px solid var(--c-line);
  border-radius: var(--radius); padding: 30px 34px 34px; margin-top: 18px;
}
.sheet-title { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; line-height: 1.4; }
.sheet-meta {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 18px;
  margin-top: 10px; font-size: 14px; opacity: .8; font-variant-numeric: tabular-nums;
}
.sheet-meta .tab { color: var(--c-accent); border-bottom: 2px solid var(--c-accent); }
.sheet-grid {
  display: grid; grid-template-columns: 220px 1fr; gap: 30px;
  margin: 24px 0 8px; align-items: start;
}
.sheet-cover {
  aspect-ratio: 5 / 7; position: relative; overflow: hidden;
  border: 1px solid var(--c-line); background: var(--c-muted); border-radius: var(--radius);
  display: flex; flex-direction: column; justify-content: flex-end; align-items: flex-start;
  padding: 14px; color: var(--c-dark);
}
.sheet-cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }

.facts { display: grid; grid-template-columns: 7.5em 1fr; gap: 0 18px; }
.facts > dt {
  font-size: 14px; color: var(--c-dark); opacity: .62; padding: 9px 0;
  border-bottom: 1px dotted var(--c-line-dark);
}
.facts > dd {
  padding: 9px 0; border-bottom: 1px dotted var(--c-line-dark);
  font-variant-numeric: tabular-nums;
}
.ftable { border-collapse: collapse; width: 100%; }
.ftable td { padding: 4px 10px 4px 0; vertical-align: top; }
.ftable td:first-child { min-width: 7em; }
.ftable tr:not(:last-child) td { border-bottom: 1px dotted var(--c-line); }

@media (max-width: 720px) {
  .sheet { padding: 20px 18px 24px; }
  .sheet-grid { grid-template-columns: 150px 1fr; gap: 18px; }
}

/* ---------- 正文 ---------- */

.doc-body { font-size: 16px; margin-top: 18px; }
.doc-body h2 {
  font-size: 1.2rem; font-weight: 700; margin: 34px 0 12px;
  border-left: 4px solid var(--c-accent); padding-left: 10px;
}
.doc-body h2:first-child { margin-top: 0; }
.doc-body h3 { font-size: 1.05rem; margin: 24px 0 8px; }
.doc-body p { margin: 12px 0; }
.doc-body ul, .doc-body ol { margin: 12px 0; padding-left: 1.6em; }
.doc-body li { margin: 6px 0; }
.doc-body blockquote {
  border-left: 3px solid var(--c-line-dark); padding: 4px 16px;
  margin: 16px 0; opacity: .8;
}
.doc-body code {
  font-family: ui-monospace, 'SF Mono', Consolas, Menlo, monospace;
  font-size: .9em; background: var(--c-muted); padding: 2px 6px; border-radius: var(--radius);
}
.doc-body pre {
  background: var(--c-dark); color: var(--c-light);
  padding: 16px 18px; border-radius: var(--radius); overflow-x: auto;
}
.doc-body pre code { background: none; padding: 0; color: inherit; }
.doc-body table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 15px; }
.doc-body th, .doc-body td { border: 1px solid var(--c-line); padding: 8px 12px; text-align: left; }
.doc-body th { background: var(--c-muted); }
.doc-body img { max-width: 100%; height: auto; }
.sheet-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }

/* ---------- 相关条目 / 清单页 ---------- */

.related { margin: 40px 0 60px; }
.related-h, .arch-yh { font-size: 1.1rem; font-weight: 700; margin: 26px 0 12px; }
.plain { padding: 34px 0 60px; }
.idxlist { list-style: none; }
.idxlist li {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 16px;
  padding: 10px 2px; border-bottom: 1px dotted var(--c-line-dark);
}
.idx-t { color: var(--c-dark); font-weight: 500; }
.idx-t:hover { color: var(--c-accent); }
.idx-f { font-size: 13px; opacity: .6; font-variant-numeric: tabular-nums; }

.tagcloud { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  display: inline-flex; align-items: baseline; gap: 5px;
  padding: 3px 12px; font-size: 14px;
  border: 1px solid var(--c-line-dark); border-radius: 999px; color: var(--c-dark);
}
.pill em { font-style: normal; font-size: 12px; opacity: .55; }
.pill:hover { border-color: var(--c-accent); color: var(--c-accent); text-decoration: none; }

.pager { display: flex; align-items: center; gap: 18px; margin-top: 30px; font-size: 15px; }
.pager-n { margin: 0 auto; opacity: .65; font-variant-numeric: tabular-nums; }
.pager-off { opacity: .35; }

/* ---------- 页脚 ---------- */

.footer { border-top: 1px solid var(--c-line); }
.footer-in {
  display: flex; flex-wrap: wrap; gap: 8px 26px;
  padding: 26px 24px; font-size: 13.5px; opacity: .78;
}
.footer a { color: inherit; }