:root{
  --bg:#ffffff;--text:#111827;--muted:#6b7280;--line:#d9dee7;--line2:#edf0f4;--link:#0969da;
  --sidebar:#0d1522;--sidebar2:#111c2d;--sidebar-text:#dbe6f3;--sidebar-muted:#8ea1b8;--active:#1f6feb;
  --code:#f6f8fa;--note:#f6f8fa;--warn:#fff8e5;--red:#b42318;--green:#1a7f37;
  --content: 860px;--toc: 250px;--side: 300px;
}
[data-theme="dark"]{--bg:#0d1117;--text:#e6edf3;--muted:#8b949e;--line:#30363d;--line2:#21262d;--link:#58a6ff;--code:#161b22;--note:#161b22;--warn:#211b08;}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;background:var(--bg);color:var(--text);font:15px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Arial,sans-serif}
a{color:var(--link);text-decoration:none} a:hover{text-decoration:underline}.app{display:grid;grid-template-columns:var(--side) minmax(0,1fr);min-height:100vh}.sidebar{background:linear-gradient(180deg,var(--sidebar),var(--sidebar2));color:var(--sidebar-text);position:sticky;top:0;height:100vh;overflow:auto;border-right:1px solid rgba(255,255,255,.08)}.brand{display:flex;gap:12px;align-items:center;padding:18px 18px 14px;border-bottom:1px solid rgba(255,255,255,.08)}.logo{width:42px;height:42px;display:grid;place-items:center;border:2px solid #6aa7ff;color:#6aa7ff;font-weight:800;font-size:20px}.brand h1{font-size:17px;line-height:1.2;margin:0}.brand p{margin:2px 0 0;color:var(--sidebar-muted);font-size:12px}.side-search{padding:14px 14px 10px}.side-search input{width:100%;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);color:#fff;border-radius:4px;padding:10px 11px}.nav-group{border-top:1px solid rgba(255,255,255,.08)}.nav-head{width:100%;background:transparent;border:0;color:#75b7ff;text-align:left;padding:11px 16px;display:flex;justify-content:space-between;align-items:center;text-transform:uppercase;font-size:12px;letter-spacing:.04em;cursor:pointer}.nav-items{padding:0 8px 10px}.nav-items[hidden]{display:none}.nav-items a{display:flex;align-items:center;gap:8px;color:var(--sidebar-text);padding:6px 9px;border-radius:4px;font-size:14px;text-decoration:none}.nav-items a:hover{background:rgba(255,255,255,.07)}.nav-items a.active{background:rgba(31,111,235,.22);color:#fff}.badge{font:12px ui-monospace,SFMono-Regular,Menlo,monospace;background:#eaeef2;border:1px solid var(--line);color:#57606a;border-radius:999px;padding:2px 7px}.topbar{height:58px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px;background:rgba(255,255,255,.86);backdrop-filter:blur(10px);position:sticky;top:0;z-index:5}[data-theme="dark"] .topbar{background:rgba(13,17,23,.86)}.top-actions{display:flex;gap:8px;align-items:center}.iconbtn{border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:4px;padding:7px 9px;cursor:pointer}.content-wrap{display:grid;grid-template-columns:minmax(0,var(--content)) var(--toc);gap:42px;max-width:1250px;margin:0 auto;padding:24px 34px 70px}.article{min-width:0}.breadcrumbs{font-size:13px;color:var(--muted);margin:0 0 16px}.hero{width:100%;height:174px;object-fit:cover;border:1px solid var(--line);border-radius:5px;margin-bottom:22px}.article h1{font-size:34px;letter-spacing:-.03em;line-height:1.15;margin:0 0 6px}.meta{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:22px}.lead{font-size:17px;color:#374151;margin:0 0 24px;max-width:780px}[data-theme="dark"] .lead{color:#c9d1d9}.article h2{font-size:22px;margin:34px 0 10px;padding-top:8px;border-top:1px solid var(--line2)}.article h3{font-size:18px;margin:22px 0 8px}.article p{margin:0 0 14px}.article ul{padding-left:24px}.article table{border-collapse:collapse;width:100%;margin:16px 0 24px;font-size:14px}.article th,.article td{border:1px solid var(--line);padding:8px 10px;text-align:left}.article th{background:var(--code);font-weight:600}.callout{border-left:4px solid var(--link);background:var(--note);padding:12px 14px;margin:18px 0}.callout.warn{border-left-color:#d29922;background:var(--warn)}.callout.danger{border-left-color:var(--red)}.toc{position:sticky;top:82px;align-self:start;border-left:1px solid var(--line);padding-left:18px;font-size:13px;max-height:calc(100vh - 100px);overflow:auto}.toc h3{font-size:12px;text-transform:uppercase;color:var(--muted);margin:0 0 8px}.toc a{display:block;color:#57606a;padding:4px 0}[data-theme="dark"] .toc a{color:#8b949e}.related{border-top:1px solid var(--line);margin-top:34px;padding-top:18px}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.related a{border:1px solid var(--line);padding:10px;border-radius:4px;background:var(--bg)}.footer-nav{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:40px;padding-top:18px}.search-panel{display:none;position:fixed;top:70px;left:50%;transform:translateX(-50%);width:min(760px,calc(100vw - 30px));max-height:70vh;overflow:auto;background:var(--bg);border:1px solid var(--line);box-shadow:0 18px 50px rgba(0,0,0,.25);z-index:30;border-radius:6px}.search-panel.open{display:block}.search-panel input{width:100%;border:0;border-bottom:1px solid var(--line);padding:16px;font-size:17px;background:var(--bg);color:var(--text)}.result a{display:block;padding:12px 16px;border-bottom:1px solid var(--line2)}.result small{display:block;color:var(--muted)}.lex-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.term{border:1px solid var(--line);padding:10px;border-radius:4px}.hero + .notice-strip{margin-top:-8px}.notice-strip{font-size:13px;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:24px}.calc{border:1px solid var(--line);padding:16px;border-radius:4px;background:var(--code);margin:16px 0}.calc label{display:block;font-size:13px;color:var(--muted);margin-top:8px}.calc input{width:100%;padding:8px;border:1px solid var(--line);border-radius:4px;background:var(--bg);color:var(--text)}.calc output{display:block;font:600 22px ui-monospace,SFMono-Regular,Menlo,monospace;margin-top:12px}.mobile-toggle{display:none}@media(max-width:1050px){.app{grid-template-columns:1fr}.sidebar{position:fixed;z-index:40;transform:translateX(-100%);transition:.2s;width:300px}.sidebar.open{transform:none}.mobile-toggle{display:inline-block}.content-wrap{grid-template-columns:1fr}.toc{display:none}}@media print{.sidebar,.topbar,.toc{display:none}.app{display:block}.content-wrap{display:block;max-width:900px;padding:0}.hero{height:120px}.article a{color:#000;text-decoration:underline}}