.support-button {
    z-index: 30;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 14px;
    padding: 9px 14px;
    border: 2px solid #f1c40f;
    background: #0d1117;
    color: #f1c40f;
    box-shadow: 3px 3px 0 #8e44ad;
    font-family: 'Press Start 2P', monospace;
    font-size: 8px;
    line-height: 1.4;
    text-decoration: none;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.1s, color 0.15s, background-color 0.15s, border-color 0.15s;
}

.support-button:hover {
    border-color: #00ffff;
    background: #8e44ad;
    color: #fff;
    box-shadow: 3px 3px 0 #00ffff;
}

.support-button:focus-visible {
    outline: 3px solid #00ffff;
    outline-offset: 4px;
}

.support-button:active {
    transform: translate(3px, 3px);
    box-shadow: none;
}

.support-button-icon {
    font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji", sans-serif;
    font-size: 15px;
    line-height: 1;
}

.export-area {
    position: relative;
    padding-bottom: 64px;
}

.legend-watermark {
    position: absolute;
    left: 50%;
    bottom: 18px;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.42);
    font-family: 'Press Start 2P', monospace;
    font-size: 8px;
    line-height: 1;
    letter-spacing: 0.8px;
    white-space: nowrap;
    text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.55);
    pointer-events: none;
}

@media (max-width: 768px) {
    .support-button {
        max-width: 90%;
        margin: 6px 0 24px;
        padding: 9px 12px;
        font-size: 8px;
    }

    .export-area {
        padding-bottom: 44px;
    }

    .legend-watermark {
        bottom: 14px;
        font-size: 7px;
    }
}