:root{--bg:#f6f7fb;--card:#fff;--ink:#141a2a;--muted:#5a6377;--line:#e2e5ee;--accent:#0b2463;--link:#1f4fd1;--mark:#fff3b0}
@media (prefers-color-scheme:dark){:root{--bg:#0b1020;--card:#121a30;--ink:#e8ecf6;--muted:#a3adc4;--line:#26304a;--accent:#9db8ff;--link:#9db8ff;--mark:#5a4a00}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 Inter,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
header{background:#0b2463;color:#fff;padding:20px 16px 18px}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px}
header a.brand{color:#fff;text-decoration:none;font-weight:800;font-size:20px;letter-spacing:.3px}
.lang{display:flex;gap:6px}
.lang button{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);border-radius:999px;padding:4px 12px;font:600 13px Inter,system-ui,sans-serif;cursor:pointer}
.lang button[aria-pressed=true]{background:#fff;color:#0b2463}
.wrap{max-width:760px;margin:0 auto}
main{padding:20px 16px 48px}
article{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:22px 20px}
h1{font-size:26px;line-height:1.25;margin:0 0 4px;color:var(--accent)}
h2{font-size:18px;margin:28px 0 6px}
.meta{color:var(--muted);font-size:14px;margin:0 0 16px}
.note{font-size:14px;color:var(--muted);border-left:3px solid var(--line);padding-left:10px}
ul{padding-left:20px}li{margin:4px 0}
a{color:var(--link)}
table{width:100%;border-collapse:collapse;font-size:14px;margin:8px 0}
th,td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:8px 6px}
.ph{background:var(--mark);border-radius:4px;padding:0 4px}
footer{color:var(--muted);font-size:13px;text-align:center;margin-top:20px}
[lang]:not(html)[hidden]{display:none}