:root {
  --bg: #f7f3ea;
  --card: #fffdf8;
  --ink: #2b241c;
  --muted: #7b6d5d;
  --accent: #7a4f2a;
  --line: #e8dcc8;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Noto Serif SC", "PingFang SC", "Microsoft YaHei", serif;
  background: linear-gradient(180deg, #f5efe4 0%, #fbf8f2 100%);
  color: var(--ink);
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}
.header {
  margin-bottom: 28px;
}
.title {
  font-size: 34px;
  margin: 0 0 8px;
}
.subtitle {
  color: var(--muted);
  margin: 0;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 8px 24px rgba(64, 44, 18, 0.06);
}
.book-title {
  font-size: 22px;
  margin: 0 0 12px;
  line-height: 1.35;
}
.meta {
  color: var(--muted);
  font-size: 14px;
  margin: 6px 0;
}
.chapter-list {
  list-style: none;
  padding: 0;
  margin: 20px 0 0;
}
.chapter-list li {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin-bottom: 10px;
}
.chapter-list a {
  display: block;
  padding: 12px 14px;
}
.breadcrumb {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 14px;
}
.chapter {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 24px;
  box-shadow: 0 8px 24px rgba(64, 44, 18, 0.06);
}
.chapter h1 {
  margin-top: 0;
  margin-bottom: 12px;
  font-size: 30px;
}
.chapter .content {
  font-size: 18px;
  line-height: 1.95;
  white-space: pre-wrap;
}
.footer {
  margin-top: 32px;
  color: var(--muted);
  font-size: 13px;
}
.nav-links {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
}
.nav-links a {
  background: #f3e7d3;
  border-radius: 10px;
  padding: 10px 14px;
}