:root {
  --bg: #fbfbfa;
  --fg: #1d1d1f;
  --muted: #6b6b70;
  --line: #e6e6e3;
  --accent: #2f5d8a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Ubuntu, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
header.site {
  border-bottom: 1px solid var(--line);
  background: #fff;
}
header.site .wrap {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px; gap: 16px;
}
.brand { font-weight: 600; letter-spacing: -0.01em; text-decoration: none; color: var(--fg); }
nav a { color: var(--muted); text-decoration: none; margin-left: 20px; font-size: 15px; }
nav a:hover { color: var(--accent); }
.hero { padding: 56px 0 24px; }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 12px; }
.lead { color: var(--muted); font-size: 18px; margin: 0; }
.cards { display: grid; gap: 20px; padding: 16px 0 64px; }
@media (min-width: 720px) { .cards { grid-template-columns: repeat(3, 1fr); } }
article {
  border: 1px solid var(--line); border-radius: 10px; padding: 20px; background: #fff;
}
article h2 { font-size: 17px; margin: 0 0 8px; letter-spacing: -0.01em; }
article p { margin: 0; color: var(--muted); font-size: 15px; }
main h1 { margin-top: 48px; }
main p { max-width: 62ch; }
footer.site {
  border-top: 1px solid var(--line); margin-top: 56px; padding: 24px 0;
  color: var(--muted); font-size: 14px;
}
a { color: var(--accent); }