body {
    height: 100vh;
    display: grid;
    grid-template-columns: 11fr 1fr;
    grid-template-rows: auto 1fr auto;
    margin: 0;
}

header.banner {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 3fr 8fr 1fr;
    align-items: center;
    background-color: #dfd;
}

header.banner .brand {
    grid-column: 1;
    padding-left: 2vw;
    padding-right: 2vw;
}

header.banner .brand a {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
}

header.banner .brand img {
    transition: filter 1s;
}
header.banner .brand h1 {
    transition: color 1s;
}
header.banner .brand:hover img {
    filter: brightness(100%) sepia(100%);
}
header.banner .brand:hover h1 {
    color: #d82;
}

.brand h1 {
    margin: 0;
}

.brand img {
    height: 3em;
    filter: brightness(0%);
}

nav {
    grid-column: 2;
    padding-right: 2vw;
}

nav ol {
    display: flex;
    align-items: stretch;
    flex-wrap: wrap;
    padding-left: 0;
    text-align: center;
    list-style-type: none;
}

nav ol li {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5em 0.1em;
}

nav ol li.current {
    background: white;
}

nav ol li a {
    text-decoration: none;
}

.lang {
    grid-column: 3;
    background-color: black;
    border-radius: 50% 50% 50% 0;
    color: white;
    padding: 0.5em;
    margin: auto;
}

main {
    grid-row: 2;
    grid-column: 1;
    padding-left: 4%;
    background-color: #fdd;
}

footer.social {
    grid-row: 2;
    grid-column: 2;

    display: flex;
    flex-direction: column;
    align-items: center;
    position: sticky;
    top: 0;

    background-color: #ddf;
}

.social img {
    width: 2em;
    margin-top: 0.5em;
    margin-bottom: 0.5em;
}

.contact {
    /* Ideally should be just: */
    /* writing-mode: sideways-lr; */
    /* but of course We Can't Have Nice Things. */
    writing-mode: vertical-rl;
    transform: rotate(180deg);

    margin: 0;
    margin-inline-start: 0.5em;
}

.contact a {
    text-decoration: none;
}

footer.legal {
    grid-column: 1 / -1;
    width: 100%;
    text-align: center;
    margin: auto;
    font-size: 75%;

    background-color: #ffd
}