:root { --bg: #ffffff; --fg: #1f2937; --muted: #4b5563; --line: #e5e7eb; --accent: #1f2937; --soft: #f3f4f6; }
@media (prefers-color-scheme: dark) { :root { --bg: #111827; --fg: #f3f4f6; --muted: #9ca3af; --line: #374151; --accent: #f3f4f6; --soft: #1f2937; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
header { border-bottom: 1px solid var(--line); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 16px; }
nav { display: flex; align-items: center; gap: 18px; height: 60px; }
nav .brand { display: flex; align-items: center; gap: 10px; font-weight: 700; text-decoration: none; color: var(--fg); margin-right: auto; }
nav .brand img { width: 32px; height: 32px; border-radius: 8px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--fg); }
main { padding: 28px 0 48px; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.25rem; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.lead { font-size: 1.15rem; color: var(--muted); }
.card { border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px; margin: 14px 0; background: var(--soft); }
.small { color: var(--muted); font-size: .95rem; }
footer { border-top: 1px solid var(--line); padding: 18px 0 32px; color: var(--muted); font-size: .9rem; }
a { color: inherit; }
code { background: var(--soft); padding: 1px 5px; border-radius: 4px; }
table { border-collapse: collapse; width: 100%; margin: 8px 0; }
td, th { text-align: left; vertical-align: top; padding: 6px 8px; border-bottom: 1px solid var(--line); }