:root{--bg:#f7f7f9;--card:#fff;--ink:#1a1a22;--muted:#5f5f6b;--line:#e4e4ea;--accent:#4f5bd5;--mark:#fff4d6}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){--bg:#121216;--card:#1c1c22;--ink:#ececf1;--muted:#a0a0ad;--line:#2c2c35;--accent:#8b93ff;--mark:#3a3120}}
:root[data-theme="dark"]{--bg:#121216;--card:#1c1c22;--ink:#ececf1;--muted:#a0a0ad;--line:#2c2c35;--accent:#8b93ff;--mark:#3a3120}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}
header.site{border-bottom:1px solid var(--line);background:var(--card)}
header.site .in,footer.site .in,main{max-width:860px;margin:0 auto;padding:0 16px}
header.site .in{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:4px 16px;min-height:60px;padding-top:8px;padding-bottom:8px}
header.site a.brand{font-weight:700;color:var(--ink);text-decoration:none;font-size:18px}
header.site nav a{color:var(--muted);text-decoration:none;font-size:14px;margin-left:16px}
header.site nav a[aria-current]{color:var(--accent);font-weight:600}
main{padding-top:32px;padding-bottom:48px}
h1{font-size:28px;line-height:1.25;margin:0 0 6px;overflow-wrap:anywhere}
.meta{color:var(--muted);font-size:14px;margin:0 0 28px}
h2{font-size:20px;margin:36px 0 10px}
a{color:var(--accent)}
p,li{max-width:72ch}
table{border-collapse:collapse;width:100%;margin:12px 0 20px;font-size:15px;background:var(--card)}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
th{background:color-mix(in srgb,var(--accent) 9%,var(--card));font-weight:600}
.tbl{overflow-x:auto}
.box{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 18px;margin:16px 0}
mark{background:var(--mark);color:inherit;padding:0 3px;border-radius:3px}
footer.site{border-top:1px solid var(--line);background:var(--card);font-size:14px;color:var(--muted)}
footer.site .in{padding-top:18px;padding-bottom:18px;display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between}
footer.site a{color:var(--muted)}
.form-note{font-size:14px;color:var(--muted);margin:12px 0}
@media (max-width:600px){h1{font-size:23px}header.site nav a{margin-left:10px;font-size:13px}th,td{padding:6px 8px;font-size:14px}}
@media print{header.site,footer.site{display:none}body{background:#fff}}