:root{--bg:#fbfbfc;--fg:#16181d;--muted:#5d646f;--rule:#e2e5ea;--accent:#1b45c4;--surface:#fff}
@media(prefers-color-scheme:dark){:root{--bg:#101317;--fg:#e6eaf0;--muted:#98a2b0;--rule:#262b33;--accent:#8fadff;--surface:#171b21}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);
 font-family:"Hiragino Sans","Yu Gothic",system-ui,sans-serif;
 line-height:1.9;font-size:16px;-webkit-text-size-adjust:100%}
.wrap{max-width:44rem;margin:0 auto;padding:2.5rem 1.25rem 5rem}
nav{display:flex;flex-wrap:wrap;gap:1rem;padding-bottom:1rem;margin-bottom:2rem;
 border-bottom:1px solid var(--rule);font-size:.82rem}
nav a{color:var(--muted);text-decoration:none}
nav a:hover,nav a:focus-visible{color:var(--accent);text-decoration:underline}
nav a[aria-current]{color:var(--fg);font-weight:700}
h1{font-size:1.6rem;line-height:1.4;margin:0 0 1.5rem}
h2{font-size:1.1rem;margin:2.2rem 0 .4rem;padding-top:.6rem;border-top:1px solid var(--rule)}
h2:first-of-type{border-top:none;padding-top:0}
p,li{margin:0 0 .7rem}
ol,ul{padding-left:1.4em}
strong{font-weight:700}
table{width:100%;border-collapse:collapse;font-size:.9rem;margin:.6rem 0 1rem;display:block;overflow-x:auto}
th,td{text-align:left;padding:.5rem .8rem .5rem 0;border-bottom:1px solid var(--rule);vertical-align:top}
th{color:var(--muted);font-weight:600;font-size:.8rem}
hr{border:none;border-top:1px solid var(--rule);margin:2rem 0}
footer{margin-top:3rem;padding-top:1.2rem;border-top:1px solid var(--rule);
 color:var(--muted);font-size:.8rem}
a{color:var(--accent)}