:root { color-scheme: light dark; --fg: #1d1d1f; --muted: #5f6368; --bg: #ffffff; --line: #e3e3e3; --link: #1a5fb4; }
@media (prefers-color-scheme: dark) { :root { --fg: #ececec; --muted: #a8a8a8; --bg: #161616; --line: #333; --link: #8ab4f8; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.7 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Segoe UI", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 40px 16px 64px; }
h1 { font-size: 28px; line-height: 1.3; margin: 0 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; padding-top: 16px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 20px 0 4px; }
p, li { margin: 6px 0; }
.en { color: var(--muted); }
.meta { color: var(--muted); font-size: 14px; }
a { color: var(--link); }
nav { margin: 24px 0 0; display: flex; gap: 16px; flex-wrap: wrap; }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
code { font-size: 14px; }