:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --brand: #4f46e5;
  --brand-2: #0ea5e9;
  --border: #e2e8f0;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020;
    --surface: #121a2f;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --brand: #818cf8;
    --brand-2: #38bdf8;
    --border: #1e293b;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
header {
  background: linear-gradient(135deg, var(--brand-2), var(--brand));
  color: #fff;
  padding: 40px 16px 32px;
}
header .wrap { display: flex; align-items: center; gap: 16px; }
header img { width: 56px; height: 56px; border-radius: 14px; }
header h1 { margin: 0; font-size: 24px; line-height: 1.2; }
header p { margin: 4px 0 0; opacity: .9; font-size: 15px; }
.wrap { max-width: 760px; margin: 0 auto; }
main { padding: 24px 16px 48px; }
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}
h2 { font-size: 19px; margin: 28px 0 8px; }
h2:first-child { margin-top: 0; }
h3 { font-size: 16px; margin: 18px 0 6px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 14px; }
a { color: var(--brand); }
ul { padding-left: 20px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; vertical-align: top; padding: 8px; border-bottom: 1px solid var(--border); }
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 16px; }
nav a { color: #fff; font-weight: 600; text-decoration: none; opacity: .95; }
footer { padding: 0 16px 40px; }
.tablewrap { overflow-x: auto; }