:root {
    --page-bg: #f6f7f7;
    --container-bg: #eaf5ef;
    /* very pale muted green */
    --panel-bg: rgba(20, 30, 24, 0.06);
    --card-bg: #343d38;
    --accent: #397a63;
    /* muted teal */
    --link: #2d6b5a;
}