body {
  margin: 0;
  background: #f7f7f4;
  color: #222;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.8;
}

.container {
  max-width: 840px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: 1px solid #ddd;
}

.nav a,
a {
  color: #1f5f8b;
  text-decoration: none;
}

.nav a:hover,
a:hover {
  text-decoration: underline;
}

h1 {
  font-size: 32px;
  line-height: 1.3;
  margin: 0 0 24px;
}

h2 {
  font-size: 22px;
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid #ddd;
}

p {
  margin: 12px 0;
}

li {
  margin: 6px 0;
}

.card {
  background: #fff;
  border: 1px solid #e2e2df;
  border-radius: 16px;
  padding: 20px;
  margin-top: 20px;
}