:root {
  --ink: #14213d;
  --muted: #5c6b84;
  --border: #dbe6f4;
  --tier1-accent: #1d4ed8;
  --tier1-accent-soft: #eaf1fd;
  --bg: #f6f9fd;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 0 16px 48px;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.6;
}

.page-header {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 0 16px;
}

.page-header h1 {
  font-size: 1.6rem;
  margin: 0 0 8px;
  color: var(--tier1-accent);
}

.subtitle {
  color: var(--muted);
  margin: 0 0 4px;
}

.meta {
  color: var(--muted);
  font-size: 0.8rem;
  margin: 0;
}

main {
  max-width: 720px;
  margin: 0 auto;
}

section h2 {
  font-size: 1.1rem;
  border-bottom: 2px solid var(--border);
  padding-bottom: 6px;
  margin-top: 32px;
}

.tier1 h2 {
  border-bottom-color: var(--tier1-accent);
  color: var(--tier1-accent);
}

.venue-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.venue-card {
  padding: 18px 0 18px 16px;
  border-bottom: 1px solid var(--border);
  border-left: 4px solid transparent;
}

.tier1-card {
  border-left-color: var(--tier1-accent);
  background: var(--tier1-accent-soft);
  border-radius: 0 8px 8px 0;
  margin-bottom: 8px;
  padding-top: 16px;
  padding-bottom: 16px;
}

.venue {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin-bottom: 8px;
  line-height: 1.3;
}

.tier1-card .venue {
  color: var(--tier1-accent);
}

.venue a {
  color: inherit;
  text-decoration: none;
}

.venue a:hover {
  text-decoration: underline;
}

.exhibitions {
  line-height: 1.9;
}

.exhibition {
  white-space: nowrap;
}

.sep {
  color: var(--muted);
  margin: 0 2px;
}

.title {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--muted);
  text-decoration: none;
}

.title:hover {
  color: var(--ink);
  text-decoration: underline;
}

.period {
  font-size: 0.78rem;
  color: var(--muted);
  margin-left: 2px;
}

.empty {
  color: var(--muted);
}

.page-footer {
  max-width: 720px;
  margin: 32px auto 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.page-footer a {
  color: inherit;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e6edf7;
    --muted: #93a3bd;
    --border: #253247;
    --tier1-accent: #7aa2f7;
    --tier1-accent-soft: #131d2f;
    --bg: #0b111c;
  }
}