background-color: #f8fafc;
            font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
            color: #1e293b;
            line-height: 1.6;
        }

        /* 英雄区域 */
        .hero-section {
            background: linear-gradient(120deg, #1e40af 0%, #3b82f6 100%);
            color: white;
            padding: 4rem 0;
            margin-bottom: 3.5rem;
            border-radius: 0 0 24px 24px;
            box-shadow: 0 8px 30px rgba(30, 64, 175, 0.25);
        }

        .hero-section h1 {
            font-weight: 800;
            font-size: 2.5rem;
        }

        .hero-section p.lead {
            opacity: 0.95;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 分区标题 */
        .section-heading {
            text-align: center;
            margin: 3rem 0 2.5rem;
        }

        .section-heading h2 {
            font-weight: 700;
            color: #0f172a;
            position: relative;
            display: inline-block;
            padding-bottom: 12px;
        }

        .section-heading h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: #3b82f6;
            border-radius: 2px;
        }

        /* 生产实力卡片 */
        .strength-item {
            background: white;
            border-radius: 18px;
            overflow: hidden;
            box-shadow: 0 6px 18px rgba(0, 0, 0, 0.06);
            transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
            margin-bottom: 2.5rem;
        }

        .strength-item:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
        }

        .media-container {
            height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f1f5f9;
            overflow: hidden;
        }

        .media-container img,
        .media-container video {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .content-container {
            padding: 1.75rem;
        }

        .item-title {
            font-size: 1.4rem;
            font-weight: 700;
            color: #0f172a;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .item-title i {
            color: #3b82f6;
        }

        .item-desc {
            color: #475569;
            margin-bottom: 1.25rem;
            font-size: 1.02rem;
        }

        .equipment-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 0.75rem;
            color: #1d4ed8;
            font-weight: 600;
        }

        .equipment-desc {
            color: #64748b;
            font-size: 0.98rem;
        }

        /* 设备品牌标签 */
        .brand-badge {
            display: inline-block;
            background: #dbeafe;
            color: #1d4ed8;
            padding: 2px 8px;
            border-radius: 12px;
            font-size: 0.85rem;
            margin-top: 0.5rem;
        }

        /* 空状态 */
        .empty-state {
            text-align: center;
            padding: 4rem 1rem;
            color: #94a3b8;
        }

        .empty-state i {
            font-size: 3.5rem;
            margin-bottom: 1.2rem;
            opacity: 0.6;
        }

        /* 响应式：中屏以上图文交替 */
        @media (min-width: 992px) {
            .strength-item:nth-child(even) .row > div:first-child {
                order: 2;
            }
            .strength-item:nth-child(even) .row > div:last-child {
                order: 1;
            }
        }

        /* 移动端优化 */
        @media (max-width: 768px) {
            .hero-section h1 {
                font-size: 2rem;
            }
            .media-container {
                height: 220px;
            }
            .content-container {
                padding: 1.25rem;
            }
        }
        .main-content{margin-top:20px}