:root{--bg:#fff;--fg:#1a1a1a;--muted:#555;--accent:#2f5bea;--line:#e3e3e3}
@media (prefers-color-scheme:dark){:root{--bg:#14161a;--fg:#ececec;--muted:#aaa;--accent:#8aa8ff;--line:#2c2f36}}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 system-ui,sans-serif}
main{max-width:760px;margin:0 auto;padding:48px 16px}
h1{font-size:2.2rem;margin:0 0 8px}h2{margin-top:2rem}
p.lead{color:var(--muted);font-size:1.15rem}
a{color:var(--accent)}img{max-width:100%;border:1px solid var(--line);border-radius:8px}
.cta{display:inline-block;margin:8px 8px 8px 0;padding:10px 18px;border:1px solid var(--accent);border-radius:6px;text-decoration:none}
nav{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:32px;font-size:.95rem}
footer{margin-top:3rem;padding-top:1rem;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
code{background:var(--line);padding:1px 5px;border-radius:4px}
pre{background:var(--line);padding:12px;border-radius:6px;overflow-x:auto}
details{border-bottom:1px solid var(--line);padding:10px 0}summary{cursor:pointer;font-weight:600}