.dilemma-matrix {
    --matrix-line-color: #aaa;
    --matrix-line-width: 1.5px;
    width: 640px;
    margin: 0 auto;
    transform: translateX(-100px);
    color: #111;
}

.matrix-role-headings,
.matrix-body {
    display: grid;
    grid-template-columns: 100px 80px 210px 210px;
    column-gap: 10px;
}

.matrix-role-headings {
    align-items: end;
    margin-bottom: 5px;
    font-size: .92em;
    font-weight: 600;
    text-align: center;
}

.column-player-heading { grid-column: 3 / 5; }

.row-player-heading {
    grid-column: 1;
    grid-row: 1 / 4;
    align-self: start;
    height: 208px;
    margin-top: 49px;
    display: flex;
    align-items: center;
    justify-content: center;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    font-size: .92em;
    font-weight: 600;
    text-align: center;
    position: relative;
    left: 35px;
}

.row-labels,
.choice-column {
    display: grid;
}

.row-labels {
    grid-column: 2 !important;
    grid-template-rows: 49px 104px 104px;
    position: relative;
    z-index: 2;
    background: transparent;
}

.choice-column {
    position: relative;
    z-index: 1;
    grid-template-rows: 46px 104px 104px;
    box-sizing: border-box;
    border: 3px solid transparent;
    border-radius: 0;
    overflow: hidden;
    background: white;
}

.choice-column.choice-left { grid-column: 3 !important; }
.choice-column.choice-right { grid-column: 4 !important; }
.choice-column.selected {
    z-index: 3;
    border-color: #c44d56;
}

.row-choice span {
    display: inline-block;
    transform: rotate(-90deg);
}

.column-choice,
.row-choice,
.payoff-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.column-choice,
.row-choice {
    background: transparent;
    font-size: 1.1em;
    font-weight: 650;
}

.row-choice {
    width: 60px;
    justify-self: end;
}

.top-row-choice {
    position: relative;
}

.top-row-choice::after {
    content: "";
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    border-top: var(--matrix-line-width) solid var(--matrix-line-color);
}

.bottom-row-choice { border-radius: 0; }

.payoff-cell {
    background: white;
}

.column-choice + .payoff-cell {
    border-top: var(--matrix-line-width) solid var(--matrix-line-color);
}

.choice-column > .payoff-cell + .payoff-cell {
    border-top: var(--matrix-line-width) solid var(--matrix-line-color);
    border-bottom: var(--matrix-line-width) solid var(--matrix-line-color);
}

.payoff-pair {
    display: flex;
    justify-content: space-evenly;
    width: 100%;
}

.payoff-item {
    display: flex;
    min-width: 72px;
    flex-direction: column;
    align-items: center;
    line-height: 1.15;
}

.payoff-item strong { font-size: 1.28em; }
.self-payoff { color: #F28C6F; }
.other-payoff { color: #43B7A8; }