body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #ffffff;
  color: #111111;
  line-height: 1.6;
}

.container {
  max-width: 720px;
  margin: 60px auto;
  padding: 0 20px;
}

header h1 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 40px;
}

.hero h2 {
  font-size: 28px;
  font-weight: 600;
  margin-bottom: 15px;
}

.hero p {
  font-size: 16px;
  color: #444;
}

.system {
  margin-top: 50px;
}

.system h3 {
  font-size: 18px;
  margin-bottom: 15px;
}

.system ul {
  padding-left: 20px;
}

.system li {
  margin-bottom: 10px;
}

.cta {
  margin-top: 50px;
}

.button {
  display: inline-block;
  padding: 12px 20px;
  background: #111;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 14px;
}

.button:hover {
  opacity: 0.85;
}

footer {
  margin-top: 60px;
  font-size: 13px;
  color: #777;
}