:root {
  color-scheme: light dark;
  --fg: #1d1f21;
  --muted: #5f6368;
  --bg: #ffffff;
  --accent: #1a5fb4;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e8eaed;
    --muted: #a0a4a8;
    --bg: #111214;
    --accent: #8ab4f8;
  }
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  line-height: 1.8;
}
main {
  max-width: 680px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}
h1 {
  font-size: 1.6rem;
  line-height: 1.4;
  margin: 0 0 16px;
}
h2 {
  font-size: 1.2rem;
  margin: 36px 0 8px;
}
h3 {
  font-size: 1rem;
  margin: 20px 0 4px;
}
p,
li {
  font-size: 1rem;
}
ul {
  padding-left: 1.4em;
  margin: 4px 0;
}
.meta {
  color: var(--muted);
  font-size: 0.9rem;
}
.contact {
  font-size: 1.2rem;
  font-weight: 600;
  user-select: all;
}
a {
  color: var(--accent);
}