html, body {
    height: 100%;
    margin: 0;
}

body {
    background: #ffffff;
    color: #111111;
    font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 24px;
}

main {
    max-width: 680px;
}

h1 {
    font-size: 3rem;
    font-weight: 600;
    letter-spacing: -0.03em;
    margin: 0 0 1rem 0;
}

.tagline {
    font-size: 1.1rem;
    font-weight: 400;
    color: #333333;
    margin: 0 0 1rem 0;
}

.description {
    font-size: 1rem;
    line-height: 1.6;
    color: #555555;
    margin: 0 0 1.5rem 0;
}

.contact {
    margin: 0;
}

.contact a {
    font-size: 0.95rem;
    color: #111111;
    text-decoration: none;
    border-bottom: 1px solid #cccccc;
    padding-bottom: 2px;
}

.contact a:hover {
    border-bottom-color: #111111;
}

@media (max-width: 640px) {
    h1 {
        font-size: 2.4rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .description {
        font-size: 0.95rem;
    }
}