* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  color: #17202a;
  background: #f6f8fb;
}

main {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 72px;
}

header {
  margin-bottom: 28px;
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  line-height: 1.2;
}

h2 {
  margin: 32px 0 8px;
  font-size: 1.2rem;
}

p,
li {
  font-size: 1rem;
}

a {
  color: #0757b8;
}

.card {
  background: #ffffff;
  border: 1px solid #dde4ef;
  border-radius: 8px;
  padding: 28px;
}

.muted {
  color: #5e6b7a;
}

nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 20px;
}