.break-bias-section {
    background-color: #fff8fa;
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.break-bias-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, var(--background-color), transparent);
    z-index: 1;
}

.bias-cards-container {
    max-width: 1400px;
    margin: 3rem auto 0;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 2;
}

.bias-card {
    perspective: 1000px;
    height: 200px;
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.bias-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.bias-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.bias-card.flipped .bias-card-inner {
    transform: rotateY(180deg);
}

.bias-card-front,
.bias-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    background: white;
}

.bias-card-front {
    background: linear-gradient(135deg, #fff5f8, #fff);
    border: 2px solid rgba(255, 105, 180, 0.1);
}

.bias-card-back {
    background: var(--gradient);
    color: white;
    transform: rotateY(180deg);
}

.bias-stereotype {
    font-size: 1.2rem;
    color: #666;
    line-height: 1.4;
    margin-bottom: 1rem;
}

.bias-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    opacity: 0.5;
}

.bias-fact {
    font-size: 1.1rem;
    line-height: 1.4;
    font-weight: 500;
}

.bias-data {
    font-size: 2rem;
    font-weight: 700;
    margin: 1rem 0;
}

/* 动画效果 */
@keyframes floatAnimation {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.bias-card:hover {
    animation: floatAnimation 2s ease-in-out infinite;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .bias-cards-container {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
        padding: 0 1.5rem;
    }

    .bias-card {
        height: 180px;
    }

    .bias-stereotype,
    .bias-fact {
        font-size: 1rem;
    }

    .bias-data {
        font-size: 1.5rem;
    }

    .bias-icon {
        font-size: 1.5rem;
    }
}