/* 公司简介 */
    .about-intro {
        display: grid;
        grid-template-columns: 1fr 400px;
        gap: 60px;
        align-items: center;
    }
    .about-intro-text h3 {
        font-size: 32px;
        color: var(--primary);
        margin-bottom: 5px;
    }
    .about-intro-text .subtitle {
        font-size: 16px;
        color: var(--text-light);
        margin-bottom: 20px;
        padding-bottom: 15px;
        border-bottom: 2px dashed var(--border);
    }
    .about-intro-text .intro-content {
        font-size: 16px;
        color: var(--text-dark);
        line-height: 2;
        margin-bottom: 15px;
    }
    .about-intro-stats {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .stat-box {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: 16px;
        padding: 30px 20px;
        text-align: center;
        color: #fff;
        transition: all 0.3s;
        box-shadow: 0 8px 30px rgba(0, 102, 204, 0.3);
    }
    .stat-box:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 40px rgba(0, 102, 204, 0.4);
    }
    .stat-box .stat-num {
        font-size: 36px;
        font-weight: bold;
        margin-bottom: 5px;
        color: #fff;
    }
    .stat-box .stat-label {
        font-size: 14px;
        color: rgba(255, 255, 255, 0.95);
        font-weight: 500;
    }
    
    /* 产品分类 */
    .product-categories {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 25px;
    }
    .category-item {
        background: rgba(26, 26, 46, 0.6);
        border-radius: 16px;
        padding: 35px 25px;
        text-align: center;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        transition: all 0.35s ease;
        border: 1px solid rgba(59, 130, 246, 0.2);
    }
    .category-item:hover {
        transform: translateY(-8px) scale(1.02);
        box-shadow: 0 15px 40px rgba(0, 102, 204, 0.4);
        background: rgba(26, 26, 46, 0.9);
        border-color: var(--primary);
    }
    .category-icon {
        width: 75px;
        height: 75px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 18px;
        transition: all 0.35s ease;
        box-shadow: 0 6px 20px rgba(0, 102, 204, 0.3);
    }
    .category-item:hover .category-icon {
        background: rgba(255, 255, 255, 0.2);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
        transform: scale(1.1);
    }
    .category-icon i {
        font-size: 30px;
        color: #fff;
    }
    .category-item:hover .category-icon i {
        color: #fff;
    }
    .category-item h4 {
        font-size: 16px;
        color: var(--text-dark);
        margin: 0;
        transition: color 0.35s ease;
    }
    .category-item:hover h4 {
        color: #fff;
    }
    
    /* 企业优势 */
    .advantage-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
    }
    .advantage-item {
        background: rgba(26, 26, 46, 0.6);
        border-radius: 20px;
        padding: 45px 35px;
        text-align: center;
        box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
        transition: all 0.35s ease;
        border-top: 4px solid var(--primary);
        position: relative;
        overflow: hidden;
    }
    .advantage-item::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        transition: left 0.35s ease;
    }
    .advantage-item:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 50px rgba(0, 102, 204, 0.18);
    }
    .advantage-item:hover::before {
        left: 0;
    }
    .advantage-icon {
        width: 85px;
        height: 85px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        margin: 0 auto 25px;
        transition: all 0.35s ease;
        box-shadow: 0 8px 25px rgba(0, 102, 204, 0.35);
        position: relative;
        z-index: 1;
    }
    .advantage-item:hover .advantage-icon {
        background: rgba(255, 255, 255, 0.2);
        transform: scale(1.15);
    }
    .advantage-icon i {
        font-size: 34px;
        color: #fff;
    }
    .advantage-item:hover .advantage-icon i {
        color: #fff;
    }
    .advantage-item h4 {
        font-size: 20px;
        color: var(--text-dark);
        margin-bottom: 15px;
        transition: color 0.35s ease;
        position: relative;
        z-index: 1;
    }
    .advantage-item:hover h4 {
        color: #fff;
    }
    .advantage-item p {
        font-size: 14px;
        color: var(--text-light);
        line-height: 1.8;
        margin: 0;
        transition: color 0.35s ease;
        position: relative;
        z-index: 1;
    }
    .advantage-item:hover p {
        color: rgba(255, 255, 255, 0.9);
    }
    
    /* 企业文化 */
    .culture-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
    }
    .culture-item {
        background: rgba(26, 26, 46, 0.6);
        border-radius: 16px;
        padding: 35px 30px;
        text-align: center;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        transition: all 0.35s ease;
        border-left: 4px solid var(--primary);
        position: relative;
    }
    .culture-item:hover {
        transform: translateY(-8px);
        box-shadow: 0 15px 40px rgba(0, 102, 204, 0.4);
        background: rgba(26, 26, 46, 0.9);
    }
    .culture-icon {
        display: inline-flex;
        width: 65px;
        height: 65px;
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
        border-radius: 50%;
        align-items: center;
        justify-content: center;
        margin-bottom: 20px;
        transition: all 0.35s ease;
        box-shadow: 0 6px 20px rgba(0, 102, 204, 0.3);
    }
    .culture-item:hover .culture-icon {
        transform: scale(1.1) rotate(5deg);
        box-shadow: 0 10px 30px rgba(0, 102, 204, 0.4);
    }
    .culture-icon i {
        font-size: 26px;
        color: #fff;
    }
    .culture-item h4 {
        font-size: 18px;
        color: var(--text-dark);
        margin-bottom: 12px;
        font-weight: 600;
    }
    .culture-item p {
        font-size: 14px;
        color: var(--text-light);
        margin: 0;
        line-height: 1.7;
    }
    .culture-item:hover p {
        color: var(--text-dark);
    }
    
    /* 响应式 */
    @media (max-width: 1200px) {
        .product-categories {
            grid-template-columns: repeat(3, 1fr);
        }
        .advantage-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        .culture-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 991px) {
        .about-intro {
            grid-template-columns: 1fr;
        }
        .about-intro-stats {
            order: -1;
        }
        .product-categories {
            grid-template-columns: repeat(2, 1fr);
        }
    }
    @media (max-width: 768px) {
        .product-categories,
        .advantage-grid,
        .culture-grid {
            grid-template-columns: 1fr;
        }
        .about-intro-stats {
            grid-template-columns: repeat(2, 1fr);
        }
        .about-intro {
            gap: 40px;
        }
    }