:root {
  --ink: #1f2937;
  --muted: #6b7280;
  --navy: #1e3a5f;
  --line: #c9d1db;
  --bg: #ffffff;
  --panel: #f1f4f8;
}
@media (prefers-color-scheme: dark) {
  :root { --ink: #e5e7eb; --muted: #9ca3af; --navy: #9cc0ea; --line: #374151; --bg: #0f1419; --panel: #161d26; }
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--ink); }
body { font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Aptos, Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 40px 20px 64px; }
header.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; }
header.brand img { width: 40px; height: 40px; }
header.brand .name { font-size: 22px; font-weight: 700; color: var(--navy); letter-spacing: .2px; }
h1 { font-size: 30px; line-height: 1.2; color: var(--navy); margin: 0 0 12px; }
h2 { font-size: 20px; color: var(--navy); margin: 32px 0 8px; padding-bottom: 4px; border-bottom: 1px solid var(--line); }
p.lede { font-size: 18px; color: var(--muted); margin: 0 0 24px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; margin: 20px 0; }
a { color: var(--navy); }
a.button { display: inline-block; background: var(--navy); color: #fff; text-decoration: none; padding: 10px 16px; border-radius: 8px; font-weight: 600; }
table { width: 100%; border-collapse: collapse; font-size: 15px; margin: 12px 0; }
th, td { text-align: left; vertical-align: top; padding: 8px 10px; border: 1px solid var(--line); }
th { background: var(--panel); }
footer { margin-top: 48px; padding-top: 16px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
footer nav a { margin-right: 16px; }
ul { padding-left: 22px; }
li { margin: 4px 0; }
code { background: var(--panel); padding: 1px 5px; border-radius: 4px; font-size: 14px; }