.hero {
    min-height: calc(100vh - 60px);
    background-color: #f5f5f5;
    padding-top: 80px;
}

.category-container {
    max-width: 100%;
    margin: 2rem auto;
    padding: 0 1rem;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    padding: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.category-card {
    position: relative;
    height: 300px;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease;
    text-decoration: none;
    color: #fff;
}

.category-card:hover {
    transform: translateY(-5px);
}

.category-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.category-card:hover .category-image {
    transform: scale(1.05);
}

.category-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.category-card:hover .category-overlay {
    transform: translateY(0);
}

.category-name {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
}

.category-count {
    font-size: 1rem;
    opacity: 0.9;
}

@media (max-width: 768px) {
    .category-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .category-card {
        height: 250px;
    }

    .category-overlay {
        transform: translateY(0);
        padding: 1.5rem;
    }

    .category-name {
        font-size: 1.5rem;
    }

    .category-count {
        font-size: 0.9rem;
    }
} 

@media (max-width: 768px) {
    .hero {
        padding-top: 400px;  /* 手机端增加padding，保证第一个完整可见 */
    }
}