/* 可复用图片卡片淡入动画样式 */
.fade-in-card {
    position: relative;
    overflow: hidden;
    display: none; /* 默认隐藏所有图片 */
    transition: transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 只有拥有active类的图片才显示 */
.fade-in-card.active {
    display: block;
}

/* 默认状态：图片去色 + 黑色遮罩 */
.fade-in-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 遮罩层 - 默认状态 */
.fade-in-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    transition: background-color 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    z-index: 1;
}

/* 文字内容容器 - 默认隐藏 */
.card-text {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    padding: 1.5rem;
    opacity: 0;
    transform: translateY(20px);
    z-index: 2;
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* 悬停状态：图片恢复色彩 + 淡黑遮罩 + 平滑淡入文字 */
.fade-in-card:hover {
    transform: translateY(-5px);
}

.fade-in-card:hover img {
    filter: grayscale(0%);
}

.fade-in-card:hover::before {
    background-color: rgba(0, 0, 0, 0.3);
}

.fade-in-card:hover .card-text {
    opacity: 1;
    transform: translateY(0);
}

/* 文字样式 */
.card-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    line-height: 1.2;
}

.card-text p {
    font-size: 1rem;
    font-weight: 300;
    margin: 0;
    line-height: 1.5;
}

/* 响应式调整 - 增加多断点支持 */
/* 大屏幕桌面 */
@media (max-width: 1440px) {
    .card-text h3 {
        font-size: 1.35rem;
    }
}

/* 中等屏幕 */
@media (max-width: 1024px) {
    .card-text h3 {
        font-size: 1.2rem;
    }
    
    .card-text p {
        font-size: 0.95rem;
    }
}

/* 平板设备 */
@media (max-width: 768px) {
    .card-text h3 {
        font-size: 1rem;
    }
    
    .card-text p {
        font-size: 0.9rem;
    }
}

/* 小屏幕手机 */
@media (max-width: 480px) {
    .card-text h3 {
        font-size: 0.85rem;
    }
    
    .card-text p {
        font-size: 0.8rem;
    }
}

/* 超小屏幕 */
@media (max-width: 320px) {
    .card-text h3 {
        font-size: 0.75rem;
    }
    
    .card-text p {
        font-size: 0.7rem;
    }
}