:root {
    font-family: "Play", sans-serif;
    font-size: 16px;
    line-height: 1.4em;

    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;

    --v-spacing: 1rem;
    --h-spacing: 1rem;

    --bg-color: #4C8055;
    --fg-color: #D9DAD9;
    --accent: #68A4A5;
}

body {
    margin: 0;
    background-color: var(--bg-color);
    color: var(--fg-color);
}

h1, h2, h3, h4, h5, h6 {
    font-family: "Rokkitt", serif;
    margin-top: calc(2 * var(--h-spacing));
    margin-bottom: var(--h-spacing);
}

main {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--h-spacing) var(--v-spacing);
}

main > header {
    font-family: "Rokkitt", serif;
    font-size: 3em;
    font-weight: bold;
    margin: var(--h-spacing) 0;
}

a {
    background-color: var(--accent);
    color: currentColor;
    font-weight: bolder;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

ul.collection li:not(:last-child) {
    margin-bottom: var(--h-spacing);
}

ul.collection li header {
    font-weight: bold;
    font-size: 1.3em;
    margin-bottom: calc(0.25 * var(--h-spacing));
}