:root {
  --bg: #f4f1ea;
  --paper: #fffcf6;
  --ink: #1c1916;
  --muted: #5c564e;
  --line: #d9d2c5;
  --accent: #8a3b12;
  --ok: #1f6b3a;
  --bad: #9b1c1c;
  --mid: #8a5a10;
  --warn: #7a4b00;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}

.top, .filters, .layout, footer, .hero, .wrap, .nav {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav {
  display: flex;
  gap: 18px;
  align-items: baseline;
  padding-top: 18px;
  padding-bottom: 8px;
  font-size: 14px;
}
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover, .nav a.on { color: var(--ink); }
.nav .brand {
  color: var(--accent);
  font-weight: 600;
  margin-right: auto;
}

.sr {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.hero { padding-top: 28px; padding-bottom: 8px; }
.search-box {
  display: flex;
  gap: 8px;
  max-width: 640px;
  margin: 0 0 10px;
}
.search-box.compact { max-width: 520px; }
.search-box input {
  flex: 1;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  padding: 12px 14px;
  font: inherit;
  font-size: 16px;
}
.search-box button {
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  padding: 0 16px;
  font: inherit;
  cursor: pointer;
  min-height: 44px;
}
.hint { font-size: 13px; color: var(--muted); margin: 0 0 12px; }

.section-title {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin: 28px 0 12px;
  font-weight: 600;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  padding-bottom: 32px;
}
.card {
  display: block;
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 18px 20px;
  text-decoration: none;
  color: inherit;
}
.card:hover { border-color: var(--ink); }
.card h3 {
  font-family: "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 20px;
  margin: 4px 0 8px;
}

.results {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  border-top: 1px solid var(--line);
  background: var(--paper);
}
.results li { border-bottom: 1px solid var(--line); }
.results a {
  display: block;
  padding: 12px 14px;
  text-decoration: none;
  color: inherit;
}
.results a:hover { background: #efe8da; }
.results .meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
  align-items: center;
}
.results .title { font-size: 16px; margin: 4px 0; }
.results .snippet { font-size: 13px; color: var(--muted); margin: 0; }
.empty-row { padding: 16px 14px; color: var(--muted); }

.filters { padding-top: 16px; padding-bottom: 8px; }

.top { padding-top: 24px; padding-bottom: 8px; }
.kicker {
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--accent);
  margin: 0 0 8px;
}
h1 {
  font-family: "Source Han Serif SC", "Noto Serif SC", "Songti SC", serif;
  font-weight: 600;
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.2;
  margin: 0 0 12px;
}
.lede { max-width: 46rem; color: var(--muted); margin: 0 0 20px; }

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 28px;
  margin-bottom: 8px;
}
.stat { min-width: 88px; }
.stat b { display: block; font-size: 22px; }
.stat span { font-size: 12px; color: var(--muted); }

.pills { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.pills button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  padding: 4px 10px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.pills button.on {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.layout {
  display: grid;
  grid-template-columns: minmax(260px, 340px) 1fr;
  gap: 24px;
  padding-top: 12px;
  padding-bottom: 48px;
  align-items: start;
}
.list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  max-height: calc(100vh - 120px);
  overflow: auto;
  background: var(--paper);
}
.list li { border-bottom: 1px solid var(--line); }
.list button {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 10px 12px;
  font: inherit;
  cursor: pointer;
  color: inherit;
}
.list button:hover, .list button.active { background: #efe8da; }
.list .meta {
  display: flex;
  gap: 8px;
  font-size: 12px;
  color: var(--muted);
}
.list .title { font-size: 14px; margin-top: 2px; }
.count { font-size: 12px; color: var(--muted); margin: 0 0 8px; }

.detail {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 22px 24px 28px;
  min-height: 60vh;
}
.detail h2 {
  font-family: "Source Han Serif SC", "Noto Serif SC", serif;
  font-size: 22px;
  margin: 0 0 8px;
  font-weight: 600;
}
.detail h3 {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin: 22px 0 6px;
}
.detail p { margin: 0 0 8px; }
.detail ul { margin: 0; padding-left: 1.1rem; }
.detail li { margin: 4px 0; }
.badge {
  display: inline-block;
  font-size: 12px;
  padding: 2px 8px;
  border: 1px solid var(--line);
  margin-right: 8px;
}
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.bad { color: var(--bad); border-color: var(--bad); }
.badge.mid { color: var(--mid); border-color: var(--mid); }
.badge.warn { color: var(--warn); border-color: var(--warn); }
.note { font-size: 13px; color: var(--muted); }
.empty { color: var(--muted); padding: 24px; }

footer {
  padding-bottom: 40px;
  color: var(--muted);
  font-size: 13px;
}
footer a { color: var(--accent); }

@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
  .list { max-height: 40vh; }
}