:root{--bg:#fff;--fg:#1a2233;--muted:#4f5a70;--brand:#1d4ed8;--brand-fg:#fff;--line:#d9dfeb;--soft:#f3f6fc;--warn:#fff3c4;--warn-fg:#4a3b00}
@media(prefers-color-scheme:dark){:root{--bg:#0f1420;--fg:#e8ecf5;--muted:#a9b2c6;--brand:#9bb8ff;--brand-fg:#0b1020;--line:#2a3348;--soft:#171e2e;--warn:#3a3210;--warn-fg:#ffe9a3}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:1.0625rem/1.7 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--fg)}
.wrap{max-width:62rem;margin:0 auto;padding:0 1rem}
a{color:var(--brand)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--brand);outline-offset:2px}
.skip{position:absolute;left:-999px;top:0}.skip:focus{left:1rem;top:1rem;background:var(--bg);padding:.5rem 1rem;z-index:99;border:2px solid var(--brand)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.site-header{border-bottom:1px solid var(--line);background:var(--bg)}
.head-row{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;padding-top:.7rem;padding-bottom:.5rem}
.brand{font-weight:800;font-size:1.25rem;text-decoration:none;color:var(--fg);margin-right:auto}
.search{display:flex;gap:.4rem;flex:1 1 16rem;max-width:28rem}
.search input,.filters input,.filters select{flex:1;padding:.55rem .7rem;border:1px solid var(--line);border-radius:.45rem;background:var(--bg);color:var(--fg);font:inherit}
button,.btn{padding:.55rem 1rem;border:0;border-radius:.45rem;background:var(--brand);color:var(--brand-fg);font:inherit;font-weight:600;text-decoration:none;display:inline-block;cursor:pointer}
.btn.alt{background:var(--soft);color:var(--fg);border:1px solid var(--line)}
.menu-btn{display:none;background:var(--soft);color:var(--fg);border:1px solid var(--line)}
.nav{list-style:none;margin:0;padding:.2rem 0 .7rem;display:flex;flex-wrap:wrap;gap:.2rem 1.1rem}
.nav a{text-decoration:none;color:var(--fg);padding:.25rem 0;display:inline-block}.nav a[aria-current]{font-weight:700;border-bottom:2px solid var(--brand)}
@media(max-width:46rem){.js .menu-btn{display:inline-block}.js .nav{display:none;flex-direction:column;padding-bottom:.9rem}.js .nav.open{display:flex}.nav a{padding:.5rem 0}.search{order:3;flex-basis:100%;max-width:none}}
main{padding-top:1.2rem;padding-bottom:3rem}h1{line-height:1.2;font-size:2rem}h2{margin-top:2rem;line-height:1.3}h3{line-height:1.3}
.lead{font-size:1.2rem;color:var(--muted)}.hero{padding:1.5rem 0 .5rem}.hero h1{font-size:2.4rem}
.cards{list-style:none;padding:0;display:grid;gap:.75rem;grid-template-columns:repeat(auto-fill,minmax(16rem,1fr))}
.cards li{border:1px solid var(--line);border-radius:.6rem;padding:.85rem 1rem;background:var(--soft);display:flex;flex-direction:column;gap:.25rem}
.cards span{color:var(--muted);font-size:.95rem}.tag{font-style:normal;font-size:.8rem;color:var(--muted)}
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;padding:0;margin:0 0 1rem;font-size:.9rem}.crumbs li+li::before{content:"/";margin-right:.4rem;color:var(--muted)}
.meta,.small{color:var(--muted);font-size:.92rem}.az a{display:inline-block;padding:.15rem .45rem;font-weight:700}
.filters{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;margin:1rem 0}.filters label{font-weight:600}
.toc{border:1px solid var(--line);border-radius:.6rem;padding:.8rem 1rem;background:var(--soft);margin:1rem 0}.toc ul{margin:.3rem 0 0;padding-left:1.2rem}
.table-wrap{overflow-x:auto}table{border-collapse:collapse;margin:1rem 0;min-width:20rem}th,td{border:1px solid var(--line);padding:.5rem .7rem;text-align:left;vertical-align:top}th{background:var(--soft)}
pre{background:var(--soft);border:1px solid var(--line);border-radius:.5rem;padding:.8rem 1rem;overflow-x:auto;line-height:1.5}code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.95em}
.q{border:1px solid var(--line);border-radius:.6rem;padding:.5rem 1rem 1rem;margin:1rem 0}.opts{list-style:none;padding:0}.opts li{padding:.2rem 0}
details summary{cursor:pointer;font-weight:600;color:var(--brand)}
.about-box,.notice{border:1px solid var(--line);background:var(--soft);border-radius:.6rem;padding:.8rem 1rem;margin:2rem 0;font-size:.92rem;color:var(--muted)}
.site-footer{border-top:1px solid var(--line);padding:1.5rem 0;color:var(--muted);background:var(--soft)}
.big{max-width:none;margin:1rem 0}[hidden]{display:none!important}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
@media print{.site-header,.site-footer,.search,.skip{display:none}body{font-size:12pt}}