:root {
  --bg: #0b0c15;
  --card: #151726;
  --text: #f4f4fb;
  --muted: #a3a6c2;
  --accent: #9d8cff;
  --border: #262a40;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 64px; }
header { margin-bottom: 32px; }
.brand { letter-spacing: 0.35em; font-weight: 600; color: var(--muted); margin: 0 0 12px; }
.brand a { color: inherit; text-decoration: none; }
h1 { font-size: 2.2rem; line-height: 1.2; margin: 0 0 12px; }
h2 { font-size: 1.25rem; margin: 0 0 8px; }
h3 { font-size: 1.05rem; margin: 20px 0 4px; }
.lead { font-size: 1.15rem; color: var(--muted); margin: 0; }
.muted { color: var(--muted); margin: 0; }
section { background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 20px; margin: 0 0 16px; }
section p:last-child, section ul:last-child { margin-bottom: 0; }
ul { padding-left: 20px; }
li { margin: 6px 0; }
a { color: var(--accent); }
code { background: var(--bg); border: 1px solid var(--border); border-radius: 6px; padding: 1px 6px; font-size: 0.9em; }
footer { color: var(--muted); font-size: 0.9rem; margin-top: 24px; }