:root {
    color-scheme: light;
    font-family: Arial, Helvetica, sans-serif;
    background: #f3f3f3;
    color: #111;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    display: grid;
    place-items: center;
    padding: 24px;
}

main {
    width: min(100%, 640px);
    padding: 56px 40px;
    background: #fff;
    border-top: 6px solid #111;
    box-shadow: 0 16px 45px rgb(0 0 0 / 12%);
    text-align: center;
}

.brand {
    margin: 0 0 40px;
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: .08em;
}

h1 {
    margin: 0 0 16px;
    font-size: clamp(1.8rem, 5vw, 2.6rem);
}

p {
    margin: 0 auto;
    max-width: 480px;
    color: #555;
    line-height: 1.6;
}

a {
    display: inline-block;
    margin-top: 32px;
    padding: 12px 22px;
    border: 2px solid #111;
    color: #111;
    font-weight: 700;
    text-decoration: none;
}

a:hover,
a:focus-visible {
    background: #111;
    color: #fff;
}

@media (max-width: 480px) {
    main {
        padding: 40px 24px;
    }
}