:root {
  --bg: #faf7f2;
  --fg: #2b2118;
  --muted: #8a7a6a;
  --accent: #8b5e3c;
  --border: #e6ddd1;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1713;
    --fg: #ece4da;
    --muted: #a3937f;
    --accent: #c89b72;
    --border: #3a322a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 2rem 1.25rem 4rem;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans",
    "Noto Sans JP", "Noto Sans KR", "Noto Sans SC", sans-serif;
  line-height: 1.8;
}
main {
  max-width: 720px;
  margin: 0 auto;
}
h1 {
  font-size: 1.6rem;
  margin: 1.5rem 0 0.25rem;
}
h2 {
  font-size: 1.1rem;
  margin: 2.2rem 0 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
}
p, li { font-size: 0.95rem; }
ul, ol { padding-left: 1.4rem; }
a { color: var(--accent); }
.lang-nav {
  font-size: 0.85rem;
  color: var(--muted);
}
.lang-nav a { margin-right: 0.75rem; text-decoration: none; }
.lang-nav strong { margin-right: 0.75rem; color: var(--fg); }
.meta { color: var(--muted); font-size: 0.85rem; margin-bottom: 2rem; }
.footer { margin-top: 3rem; color: var(--muted); font-size: 0.85rem; }
.card-list { list-style: none; padding: 0; }
.card-list li { margin: 0.5rem 0; }