.mu-context {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    color: #166534;
    background: #dcfce7;
    border: 1px solid #86efac;
    border-radius: 12px;
    padding: 0.6rem 0.8rem;
    margin: 0.8rem 0 0;
}

.mu-prompt {
    font-size: 1.4rem;
    font-weight: 700;
    text-align: center;
    margin: 0.8rem 0 0.4rem;
}

.mu-options {
    display: flex;
    gap: 0.6rem;
    justify-content: center;
    flex-wrap: wrap;
    margin: 0.8rem 0;
}

.mu-option {
    min-width: 88px;
    font-size: 1.3rem;
    font-weight: 700;
    color: #1e293b;
    background: #ffffff;
    border: 2px solid #cbd5e1;
    border-radius: 14px;
    padding: 0.5rem 0.8rem;
    cursor: pointer;
    transition: transform 0.1s ease, border-color 0.1s ease;
}

.mu-option:hover {
    transform: scale(1.05);
    border-color: #94a3b8;
}

.mu-option:disabled {
    opacity: 0.7;
}

.mu-expression {
    font-size: 2rem;
    font-weight: 800;
    text-align: center;
    color: #1e293b;
    margin: 0.6rem 0 0.2rem;
    letter-spacing: 0.02em;
}

.mu-input {
    width: 7ch;
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    padding: 0.3rem;
    border: 2px solid #cbd5e1;
    border-radius: 12px;
    margin: 1rem auto 0.6rem;
    display: block;
}

.mu-input:focus {
    border-color: #16a34a;
    outline: none;
}

.mu-input:disabled {
    opacity: 0.7;
}

.mu-units {
    display: flex;
    gap: 0.7rem;
    justify-content: center;
    flex-wrap: wrap;
    margin: 0.8rem 0;
}

.mu-unit {
    min-width: 76px;
    font-size: 1.5rem;
    font-weight: 800;
    color: #1e3a8a;
    background: #eff6ff;
    border: 2px solid #bfdbfe;
    border-radius: 999px;
    padding: 0.5rem 1.1rem;
    cursor: pointer;
    transition: transform 0.1s ease, border-color 0.1s ease;
}

.mu-unit:hover {
    transform: scale(1.05);
    border-color: #60a5fa;
}

.mu-compare {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin: 1rem 0;
}

.mu-compare-side {
    font-size: 1.8rem;
    font-weight: 800;
    color: #1e293b;
    background: #f8fafc;
    border: 2px solid #cbd5e1;
    border-radius: 14px;
    padding: 0.5rem 0.9rem;
    white-space: nowrap;
}

.mu-compare-ops {
    display: flex;
    gap: 0.4rem;
}

.mu-compare-op {
    min-width: 48px;
    margin: 0;
    font-size: 1.6rem;
    font-weight: 800;
    color: #1e3a8a;
    background: #eff6ff;
    border: 2px solid #bfdbfe;
    border-radius: 999px;
    padding: 0.3rem 0;
}