:root {
    font-family: system-ui, sans-serif;
    color: #182536;
    background: #f5f7fa;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
}

main {
    padding: 2rem;
    text-align: center;
}

h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    margin: 0 0 1rem;
}