:root {
  --bg: #f4f2ed;
  --panel: #ffffff;
  --accent: #7a4a22;
  --accent-dark: #5b371a;
  --text: #2b2b2b;
  --muted: #6d6d6d;
  --border: #e0d8cf;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Georgia", "Times New Roman", serif;
  color: var(--text);
  background: linear-gradient(180deg, #f6f1e7 0%, #f4f2ed 60%, #efe9de 100%);
}
.hero {
  padding: 32px 20px 20px;
  background: radial-gradient(circle at top left, #fff4d6 0%, #f3e3c8 45%, #e9dac2 100%);
  border-bottom: 1px solid var(--border);
}
.hero-inner { max-width: 1200px; margin: 0 auto; }
.hero-mark { font-size: 12px; letter-spacing: 0.25em; text-transform: uppercase; color: var(--muted); }
.hero h1 { margin: 8px 0 8px; font-size: 34px; }
.hero-sub { margin: 0 0 6px; color: var(--muted); }
.layout {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 20px;
  padding: 20px;
}
.sidebar {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 14px;
  height: fit-content;
}
.sidebar-title { font-size: 12px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.section-group { border-bottom: 1px solid var(--border); padding: 8px 0; }
.section-toggle {
  width: 100%;
  background: none;
  border: none;
  padding: 6px 0;
  font-size: 15px;
  color: var(--accent-dark);
  text-align: left;
  cursor: pointer;
}
.section-toggle::after {
  content: "▾";
  float: right;
  color: var(--muted);
}
.section-group.is-collapsed .section-toggle::after { content: "▸"; }
.article-list { list-style: none; padding-left: 0; margin: 6px 0 0; }
.article-list li { margin: 6px 0; }
.article-link {
  background: none;
  border: none;
  color: var(--accent);
  text-align: left;
  padding: 0;
  cursor: pointer;
  font-size: 14px;
}
.article-link.is-active { font-weight: bold; color: var(--accent-dark); }
.content {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px;
  min-height: 400px;
}
.article-view h2 { margin-top: 0; }
.article-meta { color: var(--muted); font-size: 12px; margin-bottom: 12px; }
.article-view img { max-width: 100%; height: auto; }
.article-empty { color: var(--muted); padding: 20px 0; }
.inline-note { font-size: 12px; color: var(--muted); margin: 6px 0; }
.file-link { display: inline-flex; align-items: center; gap: 6px; padding: 6px 10px; border: 1px solid var(--border); border-radius: 4px; text-decoration: none; color: var(--accent-dark); background: #fffaf2; margin: 4px 0; }
.file-link::before { content: "📄"; }
.gallery { margin-top: 30px; }
.gallery h2 { border-top: 1px solid var(--border); padding-top: 18px; }
.gallery-block { margin-bottom: 20px; }
.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}
.gallery-item {
  display: block;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: #fff;
}
.gallery-item img { width: 100%; height: 120px; object-fit: cover; display: block; }
.gallery-item span { display: block; padding: 6px 8px; font-size: 12px; color: var(--muted); }
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
}