:root{--bg:#f8fafc;--card:#ffffff;--ink:#0f172a;--muted:#475569;--line:#e2e8f0;--brand:#4f46e5;--brand2:#4338ca;--code:#0f172a;--codeink:#e2e8f0;--ok:#059669}
@media (prefers-color-scheme: dark){:root{--bg:#0b1020;--card:#111831;--ink:#e2e8f0;--muted:#94a3b8;--line:#1e293b;--brand:#818cf8;--brand2:#a5b4fc;--code:#020617;--codeink:#e2e8f0;--ok:#34d399}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
a{color:var(--brand)}
a:hover{color:var(--brand2)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line);background:var(--card)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
header.top img{height:30px;width:auto;display:block}
@media (prefers-color-scheme: dark){header.top img{background:#fff;border-radius:6px;padding:3px 6px}}
nav.toc a{color:var(--muted);text-decoration:none;font-size:14px;margin-left:16px}
nav.toc a:hover{color:var(--ink)}
.hero{padding:56px 0 32px}
.hero h1{font-size:clamp(28px,4.4vw,42px);line-height:1.15;margin:0 0 14px;letter-spacing:-.02em}
.hero p.lead{font-size:18px;color:var(--muted);max-width:760px;margin:0 0 22px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:11px 18px;border-radius:10px;font-weight:600;text-decoration:none;border:1px solid var(--line)}
.btn.primary{background:var(--brand);color:#fff;border-color:var(--brand)}
.btn.primary:hover{color:#fff;background:var(--brand2)}
.btn.ghost{background:var(--card);color:var(--ink)}
.note{font-size:14px;color:var(--muted);margin-top:10px}
section{padding:36px 0;border-top:1px solid var(--line)}
h2{font-size:26px;line-height:1.25;margin:0 0 12px;letter-spacing:-.01em}
h3{font-size:19px;margin:26px 0 8px}
p{margin:0 0 14px}
pre{background:var(--code);color:var(--codeink);padding:16px 18px;border-radius:12px;overflow-x:auto;font:13.5px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;margin:0 0 18px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em}
p code,li code,td code{background:var(--line);padding:1px 6px;border-radius:5px}
.tablewrap{overflow-x:auto;margin:0 0 18px}
table{border-collapse:collapse;width:100%;min-width:560px;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top;font-size:15px}
th{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}
tr:last-child td{border-bottom:0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:8px 0 18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.card h3{margin-top:0;font-size:17px}
.card p{font-size:15px;color:var(--muted);margin:0 0 8px}
ul,ol{padding-left:22px;margin:0 0 16px}
li{margin:4px 0}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:0 0 10px}
summary{cursor:pointer;font-weight:600}
details p{margin:10px 0 0;color:var(--muted)}
footer{border-top:1px solid var(--line);padding:28px 0 40px;color:var(--muted);font-size:14px}
@media (max-width:640px){nav.toc{display:none}.hero{padding:36px 0 20px}}
.crumbs{font-size:14px;color:var(--muted);padding-top:18px}
.crumbs a{color:var(--muted)}
.pass{color:var(--ok);font-weight:600}
.fail{color:#dc2626;font-weight:600}
.toc-box{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 18px;margin:0 0 8px}
.toc-box ol{margin:6px 0 0}