:root { color-scheme: light dark; }
body {
    margin: 0;
    font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #ffffff;
    color: #1a1a1a;
}
main { max-width: 760px; margin: 0 auto; padding: 24px 20px 64px; }
h1 { font-size: 1.8em; line-height: 1.25; }
h2 { font-size: 1.15em; margin-top: 1.8em; }
a { color: #0a6cd6; }
.meta { color: #6b6b6b; font-size: 0.9em; }
.lang { font-size: 0.9em; margin-bottom: 16px; }
.notice {
    border-left: 4px solid #d9822b;
    background: rgba(217, 130, 43, 0.08);
    padding: 4px 16px;
    margin: 1.5em 0;
}
hr { margin: 48px 0; border: none; border-top: 1px solid #ddd; }
@media (prefers-color-scheme: dark) {
    body { background: #0d1a1a; color: #e8e8e8; }
    a { color: #5ab0ff; }
    .meta { color: #9a9a9a; }
    hr { border-top-color: #2a3a3a; }
}