body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
line-height: 1.6;
margin: 0;
background: #f7f7f7;
color: #222;
}

nav {
background: white;
border-bottom: 1px solid #ddd;
}

nav a {
text-decoration: none;
color: #333;
font-weight: 500;
}

nav a:hover {
color: #000;
}

main {
max-width: 900px;
margin: auto;
padding: 30px;
background: white;
}

h1, h2, h3 {
line-height: 1.2;
}

article {
margin-bottom: 40px;
}

hr {
border: none;
border-top: 1px solid #eee;
margin: 30px 0;
}

a {
color: #0a58ca;
}

a:hover {
text-decoration: underline;
}

p {
margin: 15px 0;
}

small {
color: #666;
}