.ineq-prompt {
    font-size: 1.05rem;
    font-weight: 600;
    color: #444;
    text-align: center;
    margin: 0.25rem 0 0.75rem;
}

.ineq-line {
    display: flex;
    justify-content: center;
    margin: 0 auto 0.75rem;
    padding: 0.5rem 0.75rem;
    background: #f4f8ff;
    border: 2px solid #bcd4f6;
    border-radius: 12px;
}

.ineq-expression {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 3rem;
    margin: 0 auto 0.5rem;
    padding: 0.4rem 1rem;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #1f3a5f;
    background: #f4f8ff;
    border: 2px solid #bcd4f6;
    border-radius: 12px;
}

.ineq-svg {
    display: block;
    width: 100%;
    max-width: 44rem;
    height: auto;
    margin: 0 auto;
}

.ineq-axis {
    stroke: #1f3a5f;
    stroke-width: 2;
}

.ineq-axis-arrow {
    fill: #1f3a5f;
}

.ineq-tick {
    stroke: #8fa8c8;
    stroke-width: 1.4;
}

.ineq-label {
    font-size: 13px;
    font-weight: 700;
    fill: #33506f;
}

.ineq-ray {
    stroke-width: 4;
    stroke-linecap: round;
}

.ineq-endpoint {
    stroke-width: 2;
}

.ineq-options {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.ineq-options-lines {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
    max-width: 34rem;
    margin: 0 auto 0.35rem;
}

.ineq-option {
    min-width: 6rem;
    padding: 0.85rem 1.2rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: #1f3a5f;
    background: #ffffff;
    border: 2px solid #bcd4f6;
    border-radius: 14px;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

.ineq-option:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(31, 58, 95, 0.15);
}

.ineq-option-line {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.3rem 0.5rem;
}

.ineq-option-line .ineq-svg {
    max-width: 22rem;
}

.ineq-hint {
    text-align: left;
}

.ineq-hint p {
    margin: 0.35rem 0;
}