:root {
  --bg: #faf8f5; --fg: #2c2416; --accent: #8b6914;
  --card-bg: #fff; --card-border: #e8e0d0;
  --muted: #8a7e6a; --tag-bg: #f0e8d8;
  --nav-bg: #f5f0e8; --hover-bg: #f0ead8;
  --text-line: 2;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1a1812; --fg: #e8dcc8; --accent: #d4a830;
    --card-bg: #252218; --card-border: #3d3628;
    --muted: #9a8e7a; --tag-bg: #3a3020;
    --nav-bg: #221f18; --hover-bg: #2e2a20;
  }
}
:root[data-theme="dark"] {
  --bg: #1a1812; --fg: #e8dcc8; --accent: #d4a830;
  --card-bg: #252218; --card-border: #3d3628;
  --muted: #9a8e7a; --tag-bg: #3a3020;
  --nav-bg: #221f18; --hover-bg: #2e2a20;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Noto Serif SC", "Source Han Serif CN", Georgia, serif;
  background: var(--bg); color: var(--fg);
  min-height: 100vh; display: flex; flex-direction: column;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.container { max-width: 960px; margin: 0 auto; padding: 16px; width: 100%; }
main.container { flex: 1; }

.top-nav {
  background: var(--nav-bg); border-bottom: 1px solid var(--card-border);
  padding: 10px 16px; display: flex; align-items: center; gap: 16px;
  position: sticky; top: 0; z-index: 50;
}
.top-nav .brand { font-size: 1.15em; font-weight: 700; color: var(--accent); white-space: nowrap; }
.top-nav .nav-links { display: flex; gap: 12px; flex: 1; flex-wrap: wrap; }
.top-nav .nav-links a { color: var(--muted); font-size: 0.9em; }
.top-nav .nav-links a:hover { color: var(--accent); text-decoration: none; }
#theme-toggle {
  background: none; border: 1px solid var(--card-border); border-radius: 6px;
  padding: 4px 8px; cursor: pointer; font-size: 1em; color: var(--muted);
}

.breadcrumb { padding: 8px 16px; font-size: 0.85em; color: var(--muted); max-width: 960px; margin: 0 auto; width: 100%; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { margin: 0 4px; }

.hero { text-align: center; padding: 48px 0 32px; }
.hero h1 { font-size: 2.2em; color: var(--accent); margin-bottom: 12px; }
.hero p { color: var(--muted); line-height: 1.8; font-size: 1.05em; }

.stats-bar { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin: 20px 0 32px; }
.stats-bar span { background: var(--tag-bg); padding: 6px 16px; border-radius: 20px; font-size: 0.85em; color: var(--muted); }

.section-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; margin: 24px 0; }
.section-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 10px;
  padding: 20px; transition: box-shadow 0.2s;
}
.section-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); text-decoration: none; }
.section-card h2 { font-size: 1.15em; color: var(--accent); margin-bottom: 6px; }
.section-card .meta { font-size: 0.85em; color: var(--muted); margin-bottom: 10px; }
.section-card .sample { font-size: 0.88em; color: var(--fg); opacity: 0.8; line-height: 1.6; }

.text-list { margin: 20px 0; }
.text-item {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 12px 0; border-bottom: 1px solid var(--card-border); gap: 12px;
}
.text-item:last-child { border-bottom: none; }
.text-item .title { flex: 1; font-size: 1em; }
.text-item .info { font-size: 0.85em; color: var(--muted); white-space: nowrap; }

.text-header { margin-bottom: 24px; }
.text-header h1 { font-size: 1.8em; color: var(--accent); margin-bottom: 8px; }
.text-meta { display: flex; gap: 12px; flex-wrap: wrap; font-size: 0.9em; color: var(--muted); margin-bottom: 16px; }
.text-meta span { background: var(--tag-bg); padding: 4px 12px; border-radius: 16px; }

.toc { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 8px; padding: 16px 20px; margin-bottom: 24px; }
.toc h2 { font-size: 1em; color: var(--accent); margin-bottom: 10px; }
.toc-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.toc-grid a {
  display: inline-block; padding: 4px 12px; background: var(--tag-bg);
  border-radius: 14px; font-size: 0.85em; color: var(--muted);
}
.toc-grid a:hover { background: var(--accent); color: #fff; text-decoration: none; }

.juan-section { margin-bottom: 32px; }
.juan-section h2 { font-size: 1.2em; color: var(--accent); margin-bottom: 12px; padding-bottom: 6px; border-bottom: 1px solid var(--card-border); }
.juan-text { line-height: 2; font-size: 0.95em; white-space: pre-wrap; }

.juan-nav { display: flex; justify-content: space-between; padding: 20px 0; border-top: 1px solid var(--card-border); margin-top: 24px; }
.juan-nav a { color: var(--accent); }

.fulu-grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 600px) { .fulu-grid { grid-template-columns: 1fr 1fr; } }
.fulu-card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 10px;
  padding: 20px; display: block; transition: box-shadow 0.2s;
}
.fulu-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); text-decoration: none; }
.fulu-card h3 { font-size: 1.05em; color: var(--accent); margin-bottom: 4px; }
.fulu-card .meta { font-size: 0.8em; color: var(--muted); margin-bottom: 8px; }
.fulu-card .preview { font-size: 0.88em; line-height: 1.8; color: var(--fg); opacity: 0.85; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; }
.cat-tag { font-size: 0.75em; padding: 2px 10px; border-radius: 12px; color: #fff; display: inline-block; }
.cat-tag[data-cat="符箓"] { background: #b8860b; }
.cat-tag[data-cat="神咒"] { background: #8b0000; }
.cat-tag[data-cat="寶籙"] { background: #2e8b57; }
.cat-tag[data-cat="心印"] { background: #4169e1; }
.cat-tag[data-cat="陰符"] { background: #6a5acd; }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.filters button {
  padding: 6px 16px; border: 1px solid var(--card-border); border-radius: 20px;
  background: var(--card-bg); color: var(--muted); cursor: pointer; font-size: 0.9em; font-family: inherit;
}
.filters button.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.search-box { display: flex; gap: 8px; margin: 24px 0; }
.search-box input {
  flex: 1; padding: 12px 16px; font-size: 1em;
  border: 1px solid var(--card-border); border-radius: 8px;
  background: var(--card-bg); color: var(--fg); font-family: inherit;
}
.search-box input:focus { outline: 2px solid var(--accent); border-color: transparent; }
.search-box button {
  padding: 12px 24px; border: none; border-radius: 8px;
  background: var(--accent); color: #fff; font-size: 1em;
  cursor: pointer; font-family: inherit; white-space: nowrap;
}
.result-card {
  background: var(--card-bg); border: 1px solid var(--card-border);
  border-radius: 8px; padding: 16px; margin-bottom: 12px;
}
.result-card h3 { font-size: 1em; color: var(--accent); margin-bottom: 4px; }
.result-card .meta { font-size: 0.8em; color: var(--muted); margin-bottom: 8px; }
.result-card .text { font-size: 0.92em; line-height: 1.7; }
.result-card mark { background: #fff3d0; color: var(--fg); padding: 0 2px; border-radius: 2px; }
.loading { text-align: center; padding: 40px; color: var(--muted); }

.about-content { line-height: 2; }
.about-content h2 { color: var(--accent); margin: 24px 0 12px; font-size: 1.3em; }
.about-content p { margin-bottom: 16px; }
.about-content ul { margin: 0 0 16px 24px; }
.about-content li { margin-bottom: 6px; }

footer {
  text-align: center; padding: 32px 16px; color: var(--muted);
  font-size: 0.85em; border-top: 1px solid var(--card-border); margin-top: 40px;
}
footer a { color: var(--accent); }

@media (max-width: 600px) {
  .hero h1 { font-size: 1.6em; }
  .section-grid { grid-template-columns: 1fr; }
  .text-item { flex-direction: column; gap: 4px; }
  .top-nav .nav-links { gap: 8px; }
}