.ssm3-loading {
    text-align:center;
    padding:30px;
    font-size:20px;
    color:#007bff;
}
.ssm3-wrapper {
    text-align:center;
    margin:20px auto;
    max-width:440px;
    font-family:Arial;
}
.ssm3-title { font-size:26px; color:#0056d2; }
.ssm3-board {
    display:grid;
    gap:4px;
}
.ssm3-tile {
    width:55px;
    height:55px;
    background:#f8f9fa;
    border-radius:8px;
    cursor:pointer;
    display:flex;
    align-items:center;
    justify-content:center;
    transition:.15s;
}
.ssm3-tile img {
    width:45px;
    height:45px;
}
.ssm3-btn {
    margin-top:10px;
    padding:10px 20px;
    background:#007bff;
    color:#fff;
    border:0;
    border-radius:6px;
    cursor:pointer;
}