:root{--ink:#10213f;--muted:#55627a;--line:#dde4ef;--bg:#f5f8fc;--card:#fff;--navy:#14213d;--link:#24467f;--accent:#b8481a;--accent-soft:#fdeee4;--soft:#e8eef8;color-scheme:light dark;font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
@media (prefers-color-scheme:dark){:root{--ink:#e6edf7;--muted:#9fb0c8;--line:#263652;--bg:#0b1324;--card:#111c31;--navy:#dbe6f8;--link:#9cc0ff;--accent:#f59a6b;--accent-soft:#2a1b14;--soft:#16233d}}
*{box-sizing:border-box}
body{margin:0;line-height:1.65;background:var(--bg)}
a{color:var(--link)}a:focus-visible{outline:3px solid #e8692d;outline-offset:2px;border-radius:3px}
.wrap{width:min(920px,calc(100% - 2rem));margin:0 auto}
.skip{position:absolute;left:-9999px;top:0;padding:8px 12px;background:var(--card);z-index:10}.skip:focus{left:1rem}
.top{background:var(--card);border-bottom:1px solid var(--line)}
.top-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0 8px}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy)}
.brand img{display:block;width:40px;height:40px}.brand small{display:block;margin-top:3px;color:var(--muted);font-size:.72rem;font-weight:700}
.plate{display:inline-flex;align-items:stretch;height:28px;overflow:hidden;background:#fff;border:2px solid #111827;border-radius:6px}.plate i{display:flex;align-items:flex-end;justify-content:center;width:14px;padding-bottom:2px;background:#1f3fa3;color:#fff;font:800 9px/1 Arial,sans-serif;font-style:normal}.plate b{display:flex;align-items:center;padding:0 .4em;color:#111827;font:800 16px/1 "Bahnschrift","Arial Narrow",Arial,sans-serif}
.back{font-size:.88rem;font-weight:700;color:var(--muted)}
.tabs{display:flex;gap:4px;overflow-x:auto;padding:4px 0 0;scrollbar-width:thin}
.tabs a{flex:none;padding:10px 12px;border-bottom:3px solid transparent;color:var(--ink);text-decoration:none;font-size:.9rem;font-weight:700}
.tabs a:hover{color:var(--accent)}.tabs a[aria-current="page"]{border-color:var(--accent);color:var(--accent)}
.doc{padding:34px 0 20px}
h1{margin:0 0 6px;font-size:clamp(1.9rem,4.5vw,2.6rem);line-height:1.12;letter-spacing:-.03em;color:var(--navy)}
h2{margin:2.1rem 0 .5rem;font-size:1.3rem;line-height:1.3;color:var(--navy);scroll-margin-top:1rem}
h3{margin:1.4rem 0 .3rem;font-size:1.05rem}
p,li{max-width:72ch}ul,ol{padding-left:1.3rem}li{margin:.3rem 0}
.updated{margin:0 0 1.4rem;color:var(--muted);font-size:.9rem}
.lead{font-size:1.08rem}
code{font-size:.88em;overflow-wrap:anywhere}
.toc{margin:1.2rem 0 1.6rem;padding:14px 20px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.toc ol{margin:0;columns:2;column-gap:2rem}.toc li{break-inside:avoid;margin:.2rem 0}
.callout{padding:16px 20px;border-radius:14px;background:var(--accent-soft);border:1px solid var(--line)}.callout p{margin:0}
.operator{font-style:normal;padding:16px 20px;border-left:4px solid var(--accent);background:var(--card);border-radius:0 12px 12px 0;line-height:1.7}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:1.6rem}
.card{display:block;padding:20px 22px;border:1px solid var(--line);border-radius:16px;background:var(--card);color:var(--ink);text-decoration:none}
.card h2{margin:0 0 .3rem;font-size:1.12rem;color:var(--link)}.card p{margin:0;color:var(--muted)}.card:hover h2{text-decoration:underline}
.perm{margin:1rem 0;padding:16px 20px;border:1px solid var(--line);border-radius:14px;background:var(--card)}
.perm h2{margin:0;font-size:1rem}.perm-kind{margin:.2rem 0 .4rem;color:var(--accent);font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em}.perm p:last-child{margin-bottom:0}
.table-wrap{overflow-x:auto;margin:1rem 0;border:1px solid var(--line);border-radius:12px}
table{width:100%;border-collapse:collapse;font-size:.92rem;background:var(--card)}
caption{text-align:left;padding:10px 14px;font-weight:700}
th,td{padding:10px 14px;border-top:1px solid var(--line);text-align:left;vertical-align:top}th{font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
.foot{padding:20px 0 40px;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}.foot p{margin:.3rem 0;max-width:none}.foot a{color:var(--muted)}
@media(max-width:640px){.toc ol{columns:1}.cards{grid-template-columns:1fr}.back{display:none}.doc{padding-top:24px}}