/* 中国风基础样式 —— 变量由主题 CSS 覆盖 */
:root {
  --c-bg: #faf6ee;
  --c-bg-soft: #f1e9d8;
  --c-ink: #2b211a;
  --c-ink-soft: #5a4a3a;
  --c-accent: #8b4a2b;
  --c-accent-soft: #c98b5a;
  --c-border: #d9c9a8;
  --c-paper: #fffdf7;
  --c-shadow: rgba(43, 33, 26, 0.06);
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", "STSong", serif;
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: var(--font-serif);
  --container: 880px;
  --radius: 2px;
}
* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font-family: var(--font-body);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(circle at 20% 10%, rgba(139, 74, 43, 0.03) 0, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(139, 74, 43, 0.03) 0, transparent 50%);
}
a { color: var(--c-accent); text-decoration: none; border-bottom: 1px solid transparent; transition: border-color .2s; }
a:hover { border-bottom-color: var(--c-accent-soft); }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.site-header {
  border-bottom: 1px solid var(--c-border);
  padding: 22px 0 18px;
  background: var(--c-bg);
  position: relative;
}
.site-header::after {
  content: "";
  display: block;
  height: 1px;
  background: var(--c-accent);
  opacity: .25;
  margin-top: 18px;
}
.site-header .container { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.brand { font-size: 1.5rem; font-weight: 700; letter-spacing: .08em; color: var(--c-ink); border-bottom: none; }
.brand:hover { border-bottom: none; color: var(--c-accent); }
.nav { display: flex; gap: 22px; }
.nav a { color: var(--c-ink-soft); font-size: .95rem; letter-spacing: .05em; }
.nav a:hover { color: var(--c-accent); }

main.container { padding: 40px 24px 60px; min-height: 60vh; }

.section { margin-bottom: 48px; }
.section-title {
  font-size: 1.3rem; letter-spacing: .15em; color: var(--c-ink);
  margin: 0 0 22px; padding-left: 12px;
  border-left: 3px solid var(--c-accent); font-weight: 600;
}
.page-title { font-size: 1.7rem; letter-spacing: .05em; margin: 0 0 24px; color: var(--c-ink); }

.post-list { display: flex; flex-direction: column; gap: 4px; }
.post-card { padding: 20px 0; border-bottom: 1px dashed var(--c-border); }
.post-card:last-child { border-bottom: none; }
.post-card-title { font-size: 1.15rem; margin: 0 0 8px; font-weight: 600; letter-spacing: .02em; }
.post-card-title a { color: var(--c-ink); }
.post-card-title a:hover { color: var(--c-accent); }
.meta { font-size: .85rem; color: var(--c-ink-soft); margin: 0 0 8px; letter-spacing: .02em; }
.meta .cat { color: var(--c-accent); }
.excerpt { color: var(--c-ink-soft); margin: 0; font-size: .95rem; line-height: 1.75; }
.empty { color: var(--c-ink-soft); font-style: italic; }
.more { text-align: right; margin-top: 16px; }

.hero {
  text-align: center; padding: 48px 20px; margin-bottom: 48px;
  border-top: 1px solid var(--c-border); border-bottom: 1px solid var(--c-border);
  background: var(--c-bg-soft);
}
.hero-text { font-size: 1.4rem; letter-spacing: .12em; color: var(--c-ink); margin: 0; line-height: 1.6; }

.book-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 20px; }
.card {
  background: var(--c-paper); border: 1px solid var(--c-border);
  padding: 20px; border-radius: var(--radius);
  box-shadow: 0 1px 3px var(--c-shadow);
}
.card-title { font-size: 1.05rem; margin: 0 0 8px; letter-spacing: .04em; color: var(--c-ink); }
.card-meta { font-size: .85rem; color: var(--c-ink-soft); margin: 0 0 10px; }
.card-intro { font-size: .9rem; color: var(--c-ink-soft); margin: 0 0 12px; line-height: 1.7; }
.card-link { margin: 0; font-size: .9rem; }
.card-dl { display: grid; grid-template-columns: 80px 1fr; gap: 6px 12px; margin: 0; font-size: .9rem; }
.card-dl dt { color: var(--c-ink-soft); }
.card-dl dd { margin: 0; }
.doc-links { margin: 0; padding-left: 20px; }
.doc-links li { margin-bottom: 4px; }

.post-detail { max-width: 720px; margin: 0 auto; }
.post-header { margin-bottom: 32px; padding-bottom: 20px; border-bottom: 1px solid var(--c-border); }
.post-title { font-size: 1.8rem; letter-spacing: .04em; line-height: 1.5; margin: 0 0 12px; font-weight: 700; color: var(--c-ink); }
.post-content { font-size: 1.05rem; line-height: 1.95; color: var(--c-ink); }
.post-content h1, .post-content h2, .post-content h3 { letter-spacing: .04em; margin: 1.6em 0 .6em; color: var(--c-ink); }
.post-content h2 { font-size: 1.3rem; border-left: 3px solid var(--c-accent); padding-left: 10px; }
.post-content p { margin: .9em 0; }
.post-content blockquote {
  margin: 1.2em 0; padding: 12px 18px;
  background: var(--c-bg-soft); border-left: 3px solid var(--c-accent-soft);
  color: var(--c-ink-soft);
}
.post-content code {
  font-family: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  font-size: .9em; background: var(--c-bg-soft); padding: 2px 6px; border-radius: 2px;
}
.post-content pre { background: #2b211a; color: #f5f0e6; padding: 16px; border-radius: 4px; overflow-x: auto; }
.post-content pre code { background: transparent; color: inherit; padding: 0; }
.post-content img { max-width: 100%; height: auto; }
.post-content a { border-bottom: 1px solid var(--c-accent-soft); }

.card.book-card, .card.tech-card, .card.doc-card { margin: 24px 0; }
.card.book-card.inline { background: var(--c-bg-soft); }
.source-card { margin: 32px 0; background: var(--c-paper); border: 1px solid var(--c-accent-soft); border-left: 4px solid var(--c-accent); }
.source-text { font-size: .92rem; color: var(--c-ink-soft); line-height: 1.8; }

.post-tags { margin: 28px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-block; padding: 3px 12px; border: 1px solid var(--c-border);
  border-radius: 999px; font-size: .82rem; color: var(--c-ink-soft); letter-spacing: .04em;
}
.tag:hover { color: var(--c-accent); border-color: var(--c-accent-soft); }
.tag-tech { margin-left: 8px; color: var(--c-accent); }
.tag-kind { margin-left: 8px; }

.ai-disclosure {
  margin: 28px 0 0; padding: 12px 16px;
  background: var(--c-bg-soft); border-left: 2px solid var(--c-border);
  font-size: .82rem; color: var(--c-ink-soft); line-height: 1.7;
}

.related { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--c-border); }
.related-list { list-style: none; padding: 0; margin: 0; }
.related-list li { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-bottom: 1px dashed var(--c-border); }
.related-list li:last-child { border-bottom: none; }
.related-list time { color: var(--c-ink-soft); font-size: .85rem; flex-shrink: 0; }

.pagination { display: flex; justify-content: center; align-items: center; gap: 24px; margin: 40px 0 0; font-size: .9rem; }
.pagination a { color: var(--c-accent); }
.page-info { color: var(--c-ink-soft); }

.search-form { display: flex; gap: 8px; margin: 0 0 28px; }
.search-form input[type="search"] {
  flex: 1; padding: 10px 14px; border: 1px solid var(--c-border);
  background: var(--c-paper); color: var(--c-ink); font-family: inherit;
  font-size: 1rem; border-radius: var(--radius);
}
.search-form input[type="search"]:focus { outline: none; border-color: var(--c-accent-soft); }
.search-form button {
  padding: 10px 22px; background: var(--c-accent); color: #fff; border: none;
  cursor: pointer; font-family: inherit; font-size: 1rem; border-radius: var(--radius); letter-spacing: .08em;
}
.search-form button:hover { opacity: .9; }
.search-info { margin: 0 0 20px; color: var(--c-ink-soft); }

.book-detail { max-width: 760px; margin: 0 auto; }
.book-intro {
  color: var(--c-ink-soft); padding: 16px 20px;
  background: var(--c-bg-soft); border-left: 3px solid var(--c-accent-soft);
  margin: 16px 0 32px; line-height: 1.85;
}
.dynasty-group { margin-bottom: 40px; }
.dynasty-title {
  font-size: 1.15rem; color: var(--c-accent); letter-spacing: .12em;
  margin: 0 0 16px; padding-bottom: 8px; border-bottom: 1px solid var(--c-border);
}
.chapter-list { padding-left: 24px; margin: 0; }
.chapter-list li { padding: 10px 0; border-bottom: 1px dashed var(--c-border); }
.chapter-link { color: var(--c-ink); }
.chapter-link:hover { color: var(--c-accent); }
.chapter-no { color: var(--c-accent); font-size: .9rem; margin-right: 6px; }
.chapter-original { margin-top: 8px; }
.chapter-original summary { cursor: pointer; color: var(--c-ink-soft); font-size: .9rem; }
.chapter-original pre {
  white-space: pre-wrap; word-break: break-all;
  background: var(--c-bg-soft); padding: 14px; margin: 8px 0 0;
  font-family: inherit; font-size: .92rem; line-height: 1.85;
  color: var(--c-ink); border-radius: var(--radius);
}
.chapter-detail { max-width: 720px; margin: 0 auto; }
.chapter-original-text {
  font-size: 1.05rem; line-height: 2.1; padding: 24px;
  background: var(--c-bg-soft); border: 1px solid var(--c-border);
  border-radius: var(--radius); color: var(--c-ink);
}
.breadcrumb { color: var(--c-ink-soft); font-size: .88rem; margin: 0 0 16px; }
.source-note { font-size: .85rem; color: var(--c-ink-soft); margin-top: 16px; }

.not-found { text-align: center; padding: 80px 20px; }
.not-found h1 { font-size: 4rem; letter-spacing: .12em; color: var(--c-accent); margin: 0 0 20px; }
.not-found p { color: var(--c-ink-soft); }

.site-footer {
  border-top: 1px solid var(--c-border); padding: 32px 0;
  background: var(--c-bg-soft); color: var(--c-ink-soft);
  font-size: .88rem; text-align: center;
}
.site-footer p { margin: 6px 0; }
.footer-links a { color: var(--c-ink-soft); }
.footer-links a:hover { color: var(--c-accent); }

@media (max-width: 640px) {
  .container { padding: 0 16px; }
  main.container { padding: 24px 16px 40px; }
  .brand { font-size: 1.25rem; }
  .nav { gap: 16px; }
  .post-title { font-size: 1.4rem; }
  .hero { padding: 32px 16px; margin-bottom: 32px; }
  .hero-text { font-size: 1.15rem; }
  .book-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .page-title { font-size: 1.4rem; }
  .footer-icp { font-size: .85rem; color: var(--c-ink-soft); }
  .footer-icp a { color: var(--c-ink-soft); border-bottom: none; }
  .footer-icp a:hover { color: var(--c-accent); }
}