body {
    font-family: "HarmonyOS Sans SC",
                 "HarmonyOS Sans",
                 -apple-system,
                 BlinkMacSystemFont,
                 "Segoe UI",
                 Roboto,
                 "Helvetica Neue",
                 Arial,
                 sans-serif;
}

h1, h2, h3, h4, h5, h6 {
    font-family: "HarmonyOS Sans SC", "HarmonyOS Sans", sans-serif;
    font-weight: 600;
}