/* cortex-gateway.dev — minimal, fast, readable. No JS. */
:root {
  --ink: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg-soft: #f9fafb;
  --accent: #111827;
  --signal: #059669;
  --code-bg: #f3f4f6;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, monospace;
  --max: 760px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e5e7eb;
    --muted: #9ca3af;
    --line: #27272a;
    --bg-soft: #18181b;
    --accent: #e5e7eb;
    --signal: #34d399;
    --code-bg: #27272a;
  }
  body { background: #0b0b0d; }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  line-height: 1.65;
  font-size: 16.5px;
}
header.site {
  border-bottom: 1px solid var(--line);
  padding: 14px 24px;
  display: flex;
  gap: 18px;
  align-items: baseline;
  flex-wrap: wrap;
}
header.site a { color: var(--ink); text-decoration: none; }
header.site .brand {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 15.5px;
  display: inline-flex;
  gap: 9px;
  align-items: center;
}
header.site .brand img { display: block; }
header.site nav { display: flex; gap: 16px; font-size: 14.5px; }
header.site nav a { color: var(--muted); }
header.site nav a:hover { color: var(--signal); }
main a:hover { color: var(--signal); }
main { max-width: var(--max); margin: 0 auto; padding: 40px 24px 80px; }
h1 { font-size: 30px; line-height: 1.25; margin: 8px 0 12px; }
h2 { font-size: 21px; margin-top: 40px; }
h3 { font-size: 17px; margin-top: 28px; }
p.lead { font-size: 18px; color: var(--muted); }
a { color: inherit; }
code {
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 14px;
}
pre {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 13.5px;
  line-height: 1.5;
}
pre code { background: none; padding: 0; }
table { border-collapse: collapse; width: 100%; font-size: 14.5px; margin: 16px 0; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; vertical-align: top; }
th { background: var(--bg-soft); }
.tldr {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 20px 0;
}
.tldr strong { text-transform: uppercase; font-size: 12.5px; letter-spacing: 1px; color: var(--muted); }
.cta {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 11px 22px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  margin: 10px 0;
  transition: background 0.15s ease;
}
.cta:hover { background: var(--signal); color: #fff; }
@media (prefers-color-scheme: dark) { .cta { color: #0b0b0d; } .cta:hover { color: #0b0b0d; } }
.crumbs { font-size: 13.5px; color: var(--muted); margin-bottom: 4px; }
.crumbs a { color: var(--muted); }
footer.site {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13.5px;
  padding: 24px;
  text-align: center;
}
footer.site a { color: var(--muted); }
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 20px 0; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }
.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
  text-decoration: none;
  display: block;
}
.card b { display: block; margin-bottom: 4px; }
.card span { color: var(--muted); font-size: 14px; }
.faq h3 { margin-bottom: 4px; }
.note { color: var(--muted); font-size: 14px; }