html { color-scheme: light dark; }
body {
    font-family: ui-sans-serif, system-ui, sans-serif;
    line-height: 1.6;
    max-width: 680px;
    margin: 0;
    padding: 24px;
         -webkit-font-smoothing: antialiased;
         box-sizing: border-box; /* <--- Add this */
}
h1 {
    margin-top: 0;
    margin-bottom: 0.4em; /* <--- Add this for identical h1 spacing */
    line-height: 1.25;
}
li { margin-bottom: 12px; }
a { color: #0066cc; text-underline-offset: 3px; }
@media (prefers-color-scheme: dark) { a { color: #4d9fff; } }