:root { color-scheme: light dark; --fg: #1c1c1e; --sub: #6b6b70; --bg: #fff; --line: #e2e2e6; --link: #2a6fdb; }
@media (prefers-color-scheme: dark) { :root { --fg: #ececee; --sub: #9a9aa0; --bg: #111113; --line: #2c2c30; --link: #7fb0ff; } }
body { margin: 0; background: var(--bg); color: var(--fg); font-family: -apple-system, system-ui, "Hiragino Sans", "Noto Sans JP", sans-serif; line-height: 1.75; }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 72px; }
h1 { font-size: 26px; line-height: 1.4; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 40px 0 8px; padding-top: 16px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 24px 0 4px; }
p, li { font-size: 15px; }
ul { padding-left: 22px; }
a { color: var(--link); }
.sub { color: var(--sub); font-size: 14px; }
.lang { display: flex; gap: 16px; margin: 0 0 24px; font-size: 14px; }
.home { font-size: 14px; }