:root{--bg:#fff;--fg:#0f172a;--mut:#51606f;--acc:#0e7490;--line:#dbe3ea;--code:#f3f6f8}
@media (prefers-color-scheme:dark){:root{--bg:#0f172a;--fg:#e8eef4;--mut:#9aa9b7;--acc:#22d3ee;--line:#26354a;--code:#18243a}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}
header,main,footer{max-width:820px;margin:0 auto;padding:0 20px}
header{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;padding-top:18px;padding-bottom:18px;border-bottom:1px solid var(--line)}
header a.brand{font-weight:700;color:var(--fg);text-decoration:none}nav a{margin-left:14px;color:var(--mut);text-decoration:none;font-size:15px}nav a:hover{color:var(--acc)}
h1{font-size:clamp(28px,5vw,38px);line-height:1.15;margin:34px 0 10px}h2{margin-top:36px;font-size:23px}h3{font-size:18px;margin-top:24px}
p.lead{font-size:18px;color:var(--mut)}a{color:var(--acc)}
pre{background:var(--code);border:1px solid var(--line);padding:14px 16px;overflow-x:auto;border-radius:8px;font-size:14px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}p code,li code,td code{background:var(--code);padding:1px 5px;border-radius:4px;font-size:14px}
table{border-collapse:collapse;width:100%;font-size:15px;margin:14px 0}th,td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}th{background:var(--code)}
.cta{display:inline-block;background:var(--acc);color:#fff;padding:10px 18px;border-radius:8px;text-decoration:none;font-weight:600;margin:6px 8px 6px 0}
@media (prefers-color-scheme:dark){.cta{color:#06202a}}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px;margin:18px 0}.card{border:1px solid var(--line);border-radius:10px;padding:14px}.card a{font-weight:600}
footer{margin-top:50px;padding-top:18px;padding-bottom:40px;border-top:1px solid var(--line);color:var(--mut);font-size:14px}