:root { color-scheme: light dark; --bg: #fbfaf7; --fg: #1d1d1b; --muted: #5c5b57; --line: #dedbd2; --accent: #1a5fb4; }
@media (prefers-color-scheme: dark) { :root { --bg: #151514; --fg: #ecebe6; --muted: #a9a79f; --line: #34332f; --accent: #8ab4f8; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.65 system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif; }
header, main, footer { max-width: 44rem; margin: 0 auto; padding: 1rem 16px; }
header { display: flex; justify-content: space-between; font-weight: 600; }
header a { text-decoration: none; }
a { color: var(--accent); }
h1 { font-size: 1.7rem; line-height: 1.25; margin: 1rem 0 1.25rem; }
h2 { font-size: 1.2rem; margin: 2rem 0 .5rem; }
ul { padding-left: 1.3rem; }
code { font-size: .92em; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
table { border-collapse: collapse; width: 100%; font-size: .95rem; }
th, td { border: 1px solid var(--line); padding: .5rem .6rem; text-align: left; vertical-align: top; }
th[scope="row"] { width: 28%; background: color-mix(in srgb, var(--fg) 5%, transparent); }
footer { color: var(--muted); font-size: .9rem; border-top: 1px solid var(--line); margin-top: 3rem; }
.lead { font-size: 1.15rem; }