:root {
  --bg: #fafaf7;
  --fg: #1d1b26;
  --muted: #5d5a6b;
  --accent: #8a2be2;
  --card: #ffffff;
  --border: #e6e3ee;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14121b;
    --fg: #ecebf2;
    --muted: #a6a3b5;
    --accent: #b77cff;
    --card: #1d1a27;
    --border: #2d2939;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
}
main { max-width: 960px; margin: 0 auto; padding: 64px 16px; }
h1 { font-size: clamp(2rem, 5vw, 3rem); line-height: 1.15; margin: 0 0 16px; }
p.lead { color: var(--muted); font-size: 1.2rem; max-width: 60ch; }
a { color: var(--accent); }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); margin-top: 48px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 24px; }
.card h2 { font-size: 1.1rem; margin: 0 0 8px; }
.card p { margin: 0; color: var(--muted); }
footer { color: var(--muted); font-size: .9rem; margin-top: 64px; }