.solution-box {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.solution-box.show {
    max-height: 1500px;
    transition: max-height 0.5s ease-in;
}

.fraction {
    display: inline-block;
    text-align: center;
    vertical-align: middle;
}

.fraction > span {
    display: block;
    padding: 0 5px;
}

.fraction > span:first-child {
    border-bottom: 1px solid #000;
}

.gate-box {
    display: inline-block;
    padding: 8px 16px;
    background: #3b82f6;
    color: white;
    font-weight: bold;
    border-radius: 4px;
    margin: 0 4px;
}

.state-box {
    display: inline-block;
    padding: 8px 16px;
    background: #8b5cf6;
    color: white;
    font-weight: bold;
    border-radius: 4px;
    margin: 0 4px;
}

.matrix {
    display: inline-grid;
    grid-template-columns: auto auto;
    gap: 8px;
    padding: 8px;
    border-left: 2px solid #333;
    border-right: 2px solid #333;
    margin: 0 4px;
}

.vector {
    display: inline-grid;
    grid-template-columns: auto;
    gap: 8px;
    padding: 8px;
    border-left: 2px solid #333;
    border-right: 2px solid #333;
    margin: 0 4px;
}

.state-ket {
    display: inline-block;
    padding: 4px 8px;
    background: #e0e7ff;
    border-radius: 4px;
    font-weight: 600;
    color: #4338ca;
}
.tensor-symbol {
    display: inline-block;
    padding: 0 8px;
    font-size: 1.2em;
    color: #7c3aed;
}