body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Inter", sans-serif;
    margin: 0 auto;
    padding: 24px;
    background: #ffffff;
    max-width: 680px;
    line-height: 1.55;
    color: #1f1f1f;
}
h1, h2, h3 {
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
}
a { color: #0a7cff; text-decoration: none; }
p { margin-bottom: 16px; }