:root{--bg:#ffffff;--bg2:#f7f8fa;--panel:#ffffff;--panel2:#f1f5f9;--line:#e5e7eb;--text:#0f172a;--muted:#475569;--teal:#0f766e;--indigo:#4f46e5;--bad:#be123c;
--grad:linear-gradient(135deg,#0f766e,#15803d);--radius:18px;--max:1200px;--field:#748094;--on-accent:#ffffff;--link:#0f766e;--link-hover:#115e59;--warn-bg:#fff1f2;
--font:Inter,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:5rem}
body{margin:0;background:var(--bg);color:var(--text);font:400 1.0625rem/1.65 var(--font);background-image:radial-gradient(900px 480px at 85% -8%,rgba(129,140,248,.14),transparent 60%),radial-gradient(800px 480px at 0 4%,rgba(94,234,212,.08),transparent 60%);background-repeat:no-repeat}@media (prefers-color-scheme:light){body{background-image:none}}
img,svg{max-width:100%;height:auto}
a{color:var(--link);text-underline-offset:3px}a:hover{color:var(--link-hover)}
:focus-visible{outline:3px solid var(--indigo);outline-offset:3px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:var(--teal);color:var(--on-accent);padding:8px 14px;border-radius:8px;z-index:50}.skip:focus{left:8px}
.wrap{width:100%;max-width:var(--max);margin:0 auto;padding:0 16px}@media (min-width:768px){.wrap{padding:0 24px}}@media (min-width:1024px){.wrap{padding:0 32px}}
h1,h2,h3,h4{line-height:1.2;letter-spacing:-.01em;margin:1.6em 0 .5em}
h1{font-size:clamp(1.875rem,1.4rem + 2vw,2.75rem);font-weight:800;margin-top:.4em}
h2{font-size:clamp(1.35rem,3.4vw,1.75rem);font-weight:750;padding-top:.3em}
h3{font-size:1.2rem;font-weight:700}
p{margin:0 0 1em}
code{background:var(--panel);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:.92em;overflow-wrap:anywhere}
pre{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px;overflow:auto}pre code{border:0;padding:0;background:none;overflow-wrap:normal}
.anchor{margin-left:.4rem;text-decoration:none;opacity:0;font-weight:400}h2:hover .anchor,h3:hover .anchor,h4:hover .anchor,.anchor:focus{opacity:1}
.banner{background:var(--warn-bg);border-bottom:1px solid var(--line);color:var(--text);font-size:.92rem;padding:8px 0}
.site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid var(--line);background:var(--bg2);background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.brand-mark{flex:none}
.bar{display:flex;flex-wrap:wrap;align-items:center;gap:12px 20px;padding-top:12px;padding-bottom:12px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-weight:800;font-size:1.1rem}
.brand .dot{width:22px;height:22px;border-radius:50%;background:var(--grad);display:inline-block}
.brand small{font-weight:600;color:var(--muted);font-size:.85rem}
.bar form{flex:1 1 220px;display:flex;gap:8px;max-width:520px;margin-left:auto;min-width:0}
.searchrow{display:flex;gap:8px;margin:6px 0 12px}.bar input[type=search],.hero input[type=search],.searchrow input{flex:1;min-width:0;width:100%;min-height:44px;padding:8px 14px;border-radius:12px;border:1px solid var(--line);background:var(--bg);color:var(--text);font:inherit}
.btn{display:inline-block;min-height:44px;border-radius:12px;padding:9px 18px;font:inherit;font-weight:700;border:1px solid transparent;cursor:pointer;background:var(--grad);color:var(--on-accent);text-decoration:none}
.btn:hover{color:var(--on-accent);filter:brightness(1.08)}
.btn-ghost{background:var(--panel);border-color:var(--field);color:var(--text)}
.layout{display:block;padding-top:8px;padding-bottom:56px}
nav.topics{margin:12px 0}
nav.topics-wide{display:none}nav.topics h2 a{color:inherit;text-decoration:none}
nav.topics summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:700;border:1px solid var(--line);border-radius:12px;padding:0 14px;background:var(--panel)}
nav.topics ul{list-style:none;margin:8px 0;padding:0}
nav.topics a{display:flex;align-items:center;min-height:44px;padding:4px 12px;border-radius:8px;text-decoration:none;color:var(--text)}
nav.topics a:hover{background:var(--panel)}nav.topics a[aria-current=page]{background:var(--panel);font-weight:700;border-left:3px solid var(--teal)}
nav.topics h2 a{min-height:0;display:inline;padding:0}nav.topics h2{font-size:.78rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);margin:16px 12px 4px;padding:0}
main{min-width:0;max-width:780px}main p,main li{max-width:75ch}main .table-wrap,main pre{max-width:100%}
.crumbs{font-size:.92rem;color:var(--muted);margin:8px 0 0}.crumbs a{color:var(--muted)}
.meta{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;color:var(--muted);font-size:.9rem;margin:0 0 1.2em}
.badge{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:2px 12px;font-size:.78rem;font-weight:700;letter-spacing:.03em;text-transform:uppercase}
.badge-built{color:var(--link)}.badge-partial{color:var(--indigo)}.badge-open{color:var(--bad)}
.toc{border:1px solid var(--line);border-radius:12px;background:var(--panel);padding:4px 14px;margin:0 0 1.5em}
.toc summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:700}.toc ul{margin:0 0 10px;padding-left:1.2em}
.table-wrap{overflow-x:auto;margin:1em 0}table{border-collapse:collapse;font-size:.95rem;min-width:100%}
th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}th{background:var(--panel2)}
blockquote{margin:1em 0;padding:2px 16px;border-left:4px solid var(--indigo);background:var(--panel);border-radius:0 12px 12px 0}
ul,ol{padding-left:1.4em}li{margin:.2em 0}
.pager{display:flex;justify-content:space-between;gap:16px;margin-top:2.5rem;border-top:1px solid var(--line);padding-top:1rem}
.related,.stuck{border:1px solid var(--line);border-radius:var(--radius);padding:12px 18px;margin-top:2rem;background:var(--panel)}
.related h2,.stuck h2{font-size:1.05rem;margin:.2em 0 .4em;padding:0}
.hero{padding:48px 0 32px}@media (min-width:768px){.hero{padding:72px 0 40px}}.hero p.lead{color:var(--muted);font-size:1.15rem;max-width:40em}
.hero form{display:flex;gap:8px;max-width:620px;margin-top:18px;min-width:0}
.grid{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr;gap:14px}
.grid li{transition:border-color .2s;border:1px solid var(--line);border-radius:var(--radius);background:var(--panel);padding:16px 18px}
.grid li:hover{border-color:var(--indigo)}.grid h3,.grid h2{margin:0 0 4px;font-size:1.1rem;padding:0}.grid p{margin:0;color:var(--muted);font-size:.95rem}.grid a{font-weight:700}
.results{list-style:none;padding:0}.results li{border-bottom:1px solid var(--line);padding:12px 0}.results p{margin:2px 0 0;color:var(--muted)}
.cat{margin-left:10px;font-size:.8rem;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.list-plain{list-style:none;padding:0}.list-plain li{border-bottom:1px solid var(--line);padding:10px 0}.list-plain p{margin:0;color:var(--muted);font-size:.95rem}
footer.site-footer{border-top:1px solid var(--line);background:var(--bg2);padding:28px 0 40px;color:var(--muted);font-size:.92rem}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
@media (min-width:640px){.grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width:960px){.grid{grid-template-columns:repeat(3,1fr)}
.layout{display:grid;grid-template-columns:260px minmax(0,1fr);gap:40px}nav.topics-small{display:none}nav.topics-wide{display:block;margin:0;position:sticky;top:12px;align-self:start;max-height:calc(100vh - 24px);overflow:auto}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media (forced-colors:active){.badge,.toc,.related,.stuck,.grid li{border:1px solid CanvasText}}
@media print{.site-header,nav.topics,.pager,.banner,footer{display:none}body{background:#fff;color:#000}}