:root {
  --brand: #4c6fff;
  --violet: #7b5cff;
  --ink: #11131c;
  --muted: #646c82;
  --bg: #f5f6fa;
  --surface: #fff;
  --border: #e3e6ef;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #edf0f7; --muted: #97a0b5; --bg: #080b14;
    --surface: #121826; --border: #262f42;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 0 20px 80px;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; }
header {
  display: flex; align-items: center; gap: 14px;
  padding: 40px 0 28px;
}
.mark {
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(135deg, var(--brand), var(--violet));
  display: grid; place-items: center; color: #fff;
  font-weight: 800; font-size: 20px; letter-spacing: -1px;
}
h1 { font-size: 30px; letter-spacing: -0.8px; margin: 0 0 6px; }
h2 { font-size: 19px; letter-spacing: -0.3px; margin: 34px 0 8px; }
.updated { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
p, li { color: var(--ink); }
.lead { color: var(--muted); font-size: 17px; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 15px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: 0.4px; }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 16px; padding: 18px 20px; margin: 20px 0;
}
a { color: var(--brand); }
footer { margin-top: 48px; padding-top: 20px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
nav a { margin-right: 16px; }