:root {
    color-scheme: light dark;
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { min-height: 100%; }
body {
    min-height: 100vh;
    margin: 0;
    display: grid;
    place-items: center;
    padding: 2rem;
    line-height: 1.55;
}
main { width: min(42rem, 100%); }
.mark {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: 0.9rem;
    opacity: 0.65;
}
h1 {
    margin: 1.2rem 0 0.8rem;
    font-size: clamp(2rem, 6vw, 4.5rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
}
p { max-width: 34rem; opacity: 0.8; }