:root{--bg:#fff;--fg:#1d2125;--muted:#5e6c84;--line:#dfe1e6;--accent:#0c66e4;--code:#f4f5f7}
@media (prefers-color-scheme:dark){:root{--bg:#1d2125;--fg:#dee4ea;--muted:#9fadbc;--line:#384148;--accent:#579dff;--code:#282e33}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Hiragino Sans","Noto Sans JP",sans-serif}
main{max-width:760px;margin:0 auto;padding:32px 16px 64px}
h1{font-size:1.9rem;line-height:1.25;margin:.2em 0}
h2{font-size:1.3rem;margin-top:2em;border-bottom:1px solid var(--line);padding-bottom:.3em}
h3{font-size:1.05rem;margin-top:1.5em}
a{color:var(--accent)}
nav{font-size:.9rem;color:var(--muted);display:flex;gap:16px;flex-wrap:wrap}
code{background:var(--code);padding:.1em .35em;border-radius:4px;font-size:.92em}
pre{background:var(--code);padding:12px;border-radius:6px;overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{border:1px solid var(--line);padding:6px 10px;text-align:left;vertical-align:top}
.note{border-left:4px solid var(--accent);padding:8px 12px;background:var(--code);border-radius:4px}
footer{margin-top:48px;font-size:.85rem;color:var(--muted)}