body {
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
  margin: 0;
}

.nav {
  display: flex;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid rgba(127,127,127,0.25);
}

.nav a { text-decoration: none; }
.nav a:hover { text-decoration: underline; }

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 20px;
}