.led-board-wrapper {
    padding: 20px;
    background: transparent;
}

.led-board {
    background: linear-gradient(180deg, #c90000 0%, #e10000 45%, #d40000 100%);
    padding: 1px;
    border-radius: 5px;
    border: 1px solid #a40000;
    box-shadow:
        0 10px 24px rgba(120, 0, 0, 0.18),
        inset 0 1px 0 rgba(255, 210, 210, 0.18);
    position: relative;
    display: inline-block;
}

.led-board::before {
    content: "";
    position: absolute;
    top: 2px;
    left: 18px;
    right: 18px;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 230, 230, 0.25), transparent);
    border-radius: 999px;
    filter: blur(1px);
    pointer-events: none;
}

.led-container {
    position: relative;
    width: 675px;
    height: 40px;
    background: linear-gradient(180deg, #c40000 0%, #b00000 100%);
    border-radius: 7px;
    box-shadow:
        inset 0 1px 5px rgba(255, 210, 210, 0.06),
        inset 0 -5px 10px rgba(120, 0, 0, 0.10);
    overflow: hidden;
    padding: 1px;
}

#ledCanvas {
    display: block;
    width: 675px;
    height: 40px;
    background: linear-gradient(180deg, #be0000 0%, #aa0000 100%);
    border-radius: 6px;
    image-rendering: pixelated;
}