/* ==================== Banner轮播 ==================== */
.banner {
    margin-top: 16px;
    padding: 0 0 20px;
}

.banner-slider {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 21 / 7;
    background: linear-gradient(135deg, var(--primary), #6c5ce7, var(--accent));
}

.banner-slide {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    padding: 40px 60px;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.banner-slide.active {
    opacity: 1;
}

.banner-slide-content {
    max-width: 520px;
    color: var(--text-white);
}

.banner-slide-badge {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    backdrop-filter: blur(8px);
}

.banner-slide-title {
    font-size: 36px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 12px;
}

.banner-slide-desc {
    font-size: 15px;
    line-height: 1.6;
    opacity: 0.9;
    margin-bottom: 24px;
}

.banner-slide-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--accent);
    color: var(--text-white);
    border-radius: 28px;
    font-size: 16px;
    font-weight: 700;
    transition: all var(--transition);
    box-shadow: 0 4px 16px rgba(255, 107, 43, 0.4);
}

.banner-slide-btn:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 107, 43, 0.5);
}

.banner-slide-image {
    position: absolute;
    right: 40px;
    top: 50%;
    transform: translateY(-50%);
    width: 280px;
    height: 200px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.banner-slide-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.banner-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.banner-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border);
    cursor: pointer;
    transition: all var(--transition);
}

.banner-dot.active {
    background: var(--primary);
    width: 28px;
    border-radius: 5px;
}

/* ==================== 分类精选网格 ==================== */
.category-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.category-card {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 16 / 10;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow);
}

.category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.category-card-bg {
    position: absolute;
    inset: 0;
    transition: transform 0.5s ease;
}

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

.category-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26, 29, 46, 0.85), transparent);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px;
    color: var(--text-white);
}

.category-card-icon {
    font-size: 32px;
    margin-bottom: 8px;
}

.category-card-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.category-card-count {
    font-size: 13px;
    opacity: 0.8;
}

/* ==================== 网站简介 ==================== */
.section-about {
    margin-bottom: 0;
}

.about-card {
    display: flex;
    align-items: center;
    gap: 60px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-lg);
    padding: 50px;
    color: var(--text-white);
}

.about-content h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 16px;
}

.about-content p {
    font-size: 15px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 28px;
}

.about-stats {
    display: flex;
    gap: 32px;
}

.about-stat {
    text-align: center;
}

.about-stat-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent-light);
}

.about-stat-label {
    font-size: 13px;
    opacity: 0.7;
}

.about-visual {
    flex-shrink: 0;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    backdrop-filter: blur(8px);
}

/* ==================== 区块间距 ==================== */
.section-popular,
.section-new,
.section-categories,
.section-top-rated,
.section-tags,
.section-about {
    padding: 40px 0;
}

/* ==================== 深度品牌介绍 ==================== */
.section-deep-about {
    padding: 40px 0;
    background: var(--bg-white);
}

.deep-about-content {
    max-width: 800px;
    margin: 0 auto;
}

.deep-about-content h2 {
    font-size: 28px;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 20px;
}

.deep-about-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin: 28px 0 12px;
}

.deep-about-content p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--text);
    margin-bottom: 16px;
}

.deep-about-content p:last-child {
    margin-bottom: 0;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .category-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .banner-slide-title {
        font-size: 28px;
    }
    .banner-slide-image {
        width: 200px;
        height: 150px;
    }
    .about-card {
        gap: 40px;
        padding: 40px;
    }
}

@media (max-width: 768px) {
    .category-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .banner-slider {
        aspect-ratio: 16 / 9;
    }
    .banner-slide {
        padding: 24px 30px;
    }
    .banner-slide-title {
        font-size: 22px;
    }
    .banner-slide-desc {
        font-size: 13px;
        -webkit-line-clamp: 2;
        display: -webkit-box;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .banner-slide-image {
        display: none;
    }
    .about-card {
        flex-direction: column;
        gap: 30px;
        padding: 30px;
    }
    .about-stats {
        flex-wrap: wrap;
        gap: 20px;
    }
    .about-stat-num {
        font-size: 24px;
    }
    .about-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .category-grid {
        grid-template-columns: 1fr;
    }
    .banner-slide-title {
        font-size: 18px;
    }
    .banner-slide-btn {
        padding: 10px 24px;
        font-size: 14px;
    }
}