* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Helvetica, Arial, sans-serif;
  color: #0f1419;
  background: #fbfbfa;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 64px 24px 96px; }
header a.brand {
  font-weight: 700; letter-spacing: -0.01em; font-size: 18px;
  color: #0f1419; text-decoration: none;
}
h1 { font-size: 30px; letter-spacing: -0.02em; margin: 40px 0 8px; }
h2 { font-size: 19px; margin: 32px 0 8px; }
p, li { color: #33383f; font-size: 16px; }
.lede { font-size: 18px; color: #4a5058; }
.card {
  border: 1px solid #e7e7e4; border-radius: 14px;
  padding: 28px; background: #fff; margin: 24px 0;
}
.btn {
  display: inline-block; background: #0f1419; color: #fff;
  padding: 12px 20px; border-radius: 10px; text-decoration: none;
  font-weight: 600; font-size: 15px; margin-top: 8px;
}
.muted { color: #8b9099; font-size: 14px; }
footer { margin-top: 64px; border-top: 1px solid #e7e7e4; padding-top: 24px; }
footer a { color: #5a616a; text-decoration: none; margin-right: 18px; font-size: 14px; }
code { background: #f0f0ee; padding: 2px 6px; border-radius: 5px; font-size: 14px; }