* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background-color: #fafafa;
    color: #222;
    line-height: 1.8;
    font-size: 17px;
    font-weight: 300;
    letter-spacing: 0.015em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

main {
    max-width: 620px;
    margin: 0 auto;
    padding: 5rem 2rem 8rem;
}

.header {
    margin-bottom: 0.5rem;
}

.logo-wrapper {
    position: absolute;
    left: calc(50% - 310px - 60px);
    top: 0;
    height: 100%;
}

.logo {
    width: 70px;
    height: 70px;
    opacity: 0.9;
    margin-top: calc(5rem + 1.2rem);
    position: sticky;
    top: 1rem;
    display: block;
    overflow: visible;
    flex-shrink: 0;
}

.logo-wrapper-mobile {
    display: none;
}

.logo-mobile {
    width: 60px;
    height: 60px;
    opacity: 0.9;
    flex-shrink: 0;
}

h1 {
    font-size: 2.2rem;
    font-weight: 300;
    margin-bottom: 0.6rem;
    letter-spacing: -0.04em;
    color: #111;
}

.tagline {
    color: #888;
    margin-bottom: 4rem;
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 400;
}

h2 {
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1.2rem;
    margin-top: 3.5rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #999;
}

section {
    margin-bottom: 2.5rem;
}

section:first-of-type {
    margin-top: 0.5rem;
}

p {
    margin-bottom: 1.2rem;
    max-width: 38em;
}

a {
    color: #222;
    text-decoration: none;
    border-bottom: 1px solid #ddd;
    transition: all 0.25s ease;
    padding-bottom: 1px;
}

a:hover {
    border-bottom-color: #222;
    opacity: 0.65;
}

@media (max-width: 600px) {
    body {
        font-size: 16px;
    }

    main {
        padding: 3rem 1.5rem;
    }

    .logo-wrapper {
        display: none;
    }

    .logo-wrapper-mobile {
        display: block;
        flex-shrink: 0;
    }

    .header {
        display: flex;
        align-items: flex-start;
        gap: 1rem;
        margin-bottom: 0.5rem;
    }

    .logo-mobile {
        margin-top: 0.3rem;
    }

    h1 {
        font-size: 1.6rem;
    }
}