body { margin: 0; padding: 2rem 1rem; background: #fff; color: #000;
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif; }
.card { max-width: 820px; margin: 0 auto; }
a { color: #00e; text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 32px; margin: 8px 0; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 6px 12px 6px 0; border-bottom: 1px solid #ddd; vertical-align: top; }
th { font-weight: normal; color: #666; }
code, pre { font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
code { background: #f4f4f4; padding: 1px 4px; }
pre { background: #f4f4f4; padding: 12px; overflow-x: auto; }
pre code { background: none; padding: 0; }
small { color: #666; }