:root { color-scheme: light dark; --fg: #222; --bg: #fffdf8; --muted: #666; --link: #c2410c; }
@media (prefers-color-scheme: dark) { :root { --fg: #eee; --bg: #1b1a18; --muted: #aaa; --link: #fb923c; } }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.8 -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Noto Sans JP", sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 1.5rem; line-height: 1.4; }
h2 { font-size: 1.15rem; margin-top: 2em; }
h3 { font-size: 1rem; margin-top: 1.5em; }
a { color: var(--link); overflow-wrap: anywhere; }
.date, .lang { color: var(--muted); font-size: .9rem; }
hr { margin: 48px 0; border: 0; border-top: 1px solid var(--muted); opacity: .4; }