/* 蛎墙 · 阅读站样式，自己写的，不依赖主题 */

:root {
  --ink: #211d1a;
  --ink-soft: #6d635c;
  --paper: #f7f4ee;
  --panel: #efeae1;
  --rule: #ddd5c9;
  --accent: #7c2b2b;
  --side-w: 15.5rem;
}

* { box-sizing: border-box; }

html { font-size: 17px; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Songti SC", "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", serif;
  line-height: 1.95;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  display: grid;
  grid-template-columns: var(--side-w) minmax(0, 1fr);
  gap: 2.4rem;
  max-width: 62rem;
  margin: 0 auto;
  padding: 1.6rem 1.2rem 0;
}

/* 左栏目录 */
.side {
  position: sticky;
  top: 1.4rem;
  align-self: start;
  max-height: calc(100vh - 2.8rem);
  overflow-y: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  padding-bottom: 1.4rem;
  border-right: 1px solid var(--rule);
  padding-right: 1.1rem;
  font-size: .95rem;
}

.side::-webkit-scrollbar { width: 0; height: 0; display: none; }

.brand {
  display: block;
  font-size: 1.3rem;
  letter-spacing: .2em;
  color: var(--accent);
  text-decoration: none;
}

.brand-sub {
  margin: .2rem 0 1.3rem;
  color: var(--ink-soft);
  font-size: .82rem;
  letter-spacing: .12em;
}

details.vol { margin: 0 0 .9rem; }

summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--ink);
  padding: .25rem 0;
  display: flex;
  align-items: baseline;
  gap: .45rem;
}

summary::-webkit-details-marker { display: none; }

summary::before {
  content: "▸";
  color: var(--ink-soft);
  font-size: .8em;
  transition: transform .15s ease;
}

details[open] > summary::before { transform: rotate(90deg); }

summary .cnt {
  margin-left: auto;
  font-weight: 400;
  font-size: .78rem;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
}

.side ul {
  list-style: none;
  margin: .2rem 0 0;
  padding: 0 0 0 .35rem;
  border-left: 1px solid var(--rule);
}

.side li { margin: 0; line-height: 1.5; }

.side li a {
  display: flex;
  gap: .5rem;
  padding: .2rem .3rem;
  color: var(--ink-soft);
  text-decoration: none;
}

.side li a:hover { color: var(--accent); background: var(--panel); }

.side li a i {
  font-style: normal;
  font-variant-numeric: tabular-nums;
  font-size: .78rem;
  min-width: 1.7em;
  opacity: .75;
}

.side li a.on {
  color: var(--accent);
  font-weight: 600;
  background: var(--panel);
}

.side-links {
  display: flex;
  gap: .9rem;
  padding-top: .8rem;
  margin-top: .4rem;
  border-top: 1px solid var(--rule);
}

.side-links a { color: var(--ink-soft); text-decoration: none; font-size: .88rem; }
.side-links a:hover { color: var(--accent); }

/* 正文 */
main { min-width: 0; padding-bottom: 2.5rem; }

article { max-width: 34rem; }

h1 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: .05em;
  margin: .4rem 0 1.6rem;
}

h2 {
  font-size: 1.02rem;
  font-weight: 600;
  letter-spacing: .28em;
  color: var(--ink-soft);
  margin: 2.6rem 0 1.1rem;
  text-align: center;
}

h2:first-child { margin-top: .4rem; }

p { margin: 0 0 1.05rem; }

article > p { text-indent: 2em; }
article > h1 + p, article > h2 + p { text-indent: 0; }

a { color: var(--accent); }

blockquote {
  margin: 1.2rem 0;
  padding-left: 1rem;
  border-left: 2px solid var(--rule);
  color: var(--ink-soft);
}

ul, ol { padding-left: 1.4rem; }

li { margin: .25rem 0; }

.lede { color: var(--ink-soft); text-indent: 0; }

.note {
  font-size: .92rem;
  color: var(--ink-soft);
  background: var(--panel);
  border: 1px solid var(--rule);
  padding: .7rem .95rem;
  margin: 1.6rem 0;
  text-indent: 0;
}

.pager {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: .8rem;
  margin-top: 3.2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--rule);
}

.pager a {
  flex: 1 1 0;
  min-width: 0;
  display: block;
  text-decoration: none;
  padding: .55rem .7rem;
  border: 1px solid var(--rule);
  background: #fbf9f5;
}

.pager a:hover { background: var(--panel); border-color: #cfc4b3; }

.pager .dir {
  display: block;
  font-size: .78rem;
  letter-spacing: .14em;
  color: var(--ink-soft);
}

.pager .t {
  display: block;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: var(--accent);
}

.pager .next { text-align: right; }

.pager .empty { flex: 1 1 0; border: 0; }

.pager .mid {
  flex: 0 0 auto;
  align-self: center;
  font-size: .8rem;
  letter-spacing: .06em;
  color: var(--ink-soft);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

@media (max-width: 52rem) {
  .pager { flex-wrap: wrap; }
  .pager .mid { order: -1; width: 100%; text-align: center; }
}

.site-foot {
  max-width: 62rem;
  margin: 0 auto;
  padding: 0 1.2rem 2.4rem;
  color: var(--ink-soft);
  font-size: .85rem;
}

/* 窄屏：目录收到上面，正文在下 */
@media (max-width: 52rem) {
  .wrap { grid-template-columns: 1fr; gap: 1rem; padding-top: 1rem; }
  .side {
    position: static;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    padding-right: 0;
    padding-bottom: .9rem;
  }
  details.vol { margin-bottom: .4rem; }
  .side ul { max-height: 46vh; overflow-y: auto; scrollbar-width: none; }
  .side ul::-webkit-scrollbar { width: 0; display: none; }
}