:root{--bg:#0b0f17;--panel:#111827;--panel2:#0f1623;--line:#1f2a3a;--text:#e6ebf2;--muted:#93a1b5;--green:#22c55e;--green2:#16a34a;--red:#ef4444;--blue:#3b82f6;--gold:#e0b341;--cyan:#38bdf8}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line);background:rgba(11,15,23,.92);position:sticky;top:0;z-index:5;backdrop-filter:blur(6px)}
.bar{display:flex;align-items:center;justify-content:space-between;padding:14px 20px;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--text)}
.brand:hover{text-decoration:none}
.brand svg{width:30px;height:30px}
.brand b{color:var(--green)}
.bar-r{display:flex;align-items:center;gap:14px}
.guide-link{color:var(--text);font-weight:600;font-size:14px}
.pill{font-size:11px;font-weight:600;letter-spacing:.8px;text-transform:uppercase;color:var(--gold);border:1px solid rgba(224,179,65,.45);border-radius:999px;padding:4px 10px;white-space:nowrap}
.layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:36px;padding-top:28px;padding-bottom:40px}
.side{position:sticky;top:76px;align-self:start;max-height:calc(100vh - 96px);overflow:auto}
.navbox summary{font-size:12px;letter-spacing:.8px;text-transform:uppercase;color:var(--muted);font-weight:600;cursor:pointer;list-style:none;margin-bottom:8px}
.navbox summary::-webkit-details-marker{display:none}
.toc{display:flex;flex-direction:column;gap:2px}
.toc a{color:var(--muted);padding:7px 10px;border-radius:8px;font-size:14.5px;border-left:2px solid transparent}
.toc a:hover{color:var(--text);background:var(--panel);text-decoration:none}
.toc a[aria-current]{color:var(--text);background:var(--panel);border-left-color:var(--green)}
.doc{min-width:0;max-width:860px}
.doc h1{font-size:clamp(28px,4vw,40px);line-height:1.15;margin:0 0 10px;letter-spacing:-.4px}
.doc .lead{color:var(--muted);font-size:17.5px;margin:0 0 22px}
.doc h2{font-size:24px;margin:44px 0 10px;padding-top:6px;letter-spacing:-.2px;scroll-margin-top:80px}
.doc h3{font-size:17.5px;margin:28px 0 6px;scroll-margin-top:80px}
.doc p{margin:0 0 14px}
.doc ul,.doc ol{margin:0 0 16px;padding-left:22px}
.doc li{margin:4px 0}
.doc code,.k{font-family:Consolas,"Cascadia Mono",Menlo,monospace;font-size:.92em;background:var(--panel);border:1px solid var(--line);border-radius:5px;padding:1px 6px;white-space:nowrap}
.onpage{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:0 0 26px}
.onpage b{display:block;font-size:12px;letter-spacing:.8px;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.onpage ul{margin:0;padding-left:18px;columns:2;column-gap:28px}
.onpage li{margin:2px 0;break-inside:avoid}
figure{margin:18px 0 26px;background:var(--panel2);border:1px solid var(--line);border-radius:12px;overflow:hidden}
figure img{display:block;width:100%;height:auto;max-width:100%}
figure.narrow{max-width:560px}
figure.mid{max-width:760px}
figcaption{font-size:13.5px;color:var(--muted);padding:9px 14px;border-top:1px solid var(--line)}
.scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
.scroll img{width:auto;max-width:none;height:auto}
table.opts{width:100%;border-collapse:collapse;margin:8px 0 22px;font-size:15px}
table.opts th,table.opts td{text-align:left;vertical-align:top;padding:9px 12px;border-bottom:1px solid var(--line)}
table.opts th{font-size:12px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted);font-weight:600;background:var(--panel2)}
table.opts td:first-child{white-space:nowrap;font-weight:600;color:var(--text);width:1%}
.tablewrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin:8px 0 22px}
.tablewrap table.opts{margin:0}
.tablewrap table.opts tr:last-child td{border-bottom:0}
.callout{border:1px solid;border-radius:12px;padding:14px 18px;margin:16px 0 22px}
.callout p:last-child{margin-bottom:0}
.callout.warn{border-color:rgba(239,68,68,.45);background:rgba(239,68,68,.07)}
.callout.info{border-color:rgba(56,189,248,.35);background:rgba(56,189,248,.06)}
.callout.good{border-color:rgba(34,197,94,.35);background:rgba(34,197,94,.06)}
.callout strong:first-child{display:block;margin-bottom:4px}
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0 10px}
.cards a{display:block;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:16px 18px;color:var(--text)}
.cards a:hover{border-color:#2d5a3f;text-decoration:none}
.cards a b{display:block;font-size:16.5px;margin-bottom:4px}
.cards a span{color:var(--muted);font-size:14.5px}
.pn{display:flex;justify-content:space-between;gap:12px;margin-top:48px;padding-top:18px;border-top:1px solid var(--line)}
.pn a{font-weight:600}
footer{border-top:1px solid var(--line);padding:26px 0 40px;color:var(--muted);font-size:13px}
footer p{margin:0 0 10px;max-width:920px}
footer .row{display:flex;flex-wrap:wrap;gap:8px 20px;justify-content:space-between;margin-top:14px}
@media (max-width:900px){
  .layout{grid-template-columns:1fr;gap:10px;padding-top:16px}
  .side{position:static;max-height:none}
  .navbox{background:var(--panel2);border:1px solid var(--line);border-radius:12px;padding:10px 12px}
  .navbox summary{margin:0}
  .navbox[open] summary{margin-bottom:8px}
  .onpage ul{columns:1}
}
@media (max-width:560px){
  .cards{grid-template-columns:1fr}
  .pill{display:none}
  table.opts td:first-child{white-space:normal}
}
a.zoom{display:block;cursor:zoom-in}
a.zoom:hover{text-decoration:none}