/* ========== 主容器：全部使用px，适配网页端 ========== */
        .product-hub {
            width: 84.35%;
            margin: 0 auto;
            padding: 50px 0;
 
        }

        /* 头部区域 */
        .title-section {
            text-align: center;
            margin-bottom: 35px;
        }
        .title-main {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 40px;
            font-weight: 700;
            color: #0f172a;
        }
        .title-main img {
            width: 36px;
            height: auto;
        }
        .title-sub {
            font-size: 15px;
            color: #5b6e8c;
            margin-top: 8px;
        }

        /* ----- 大图区域（内部tab导航）----- */
        .hero-area {
            position: relative;
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 45px;
            box-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.12);
            /* background: #eef2ff; */
        }
        .hero-image-container {
            width: 100%;
            aspect-ratio: 16 / 6;
            /* background: #eef2ff; */
            position: relative;
        }
        .hero-img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: opacity 0.25s ease;
            display: none;
        }
        .hero-img.active {
            display: block;
        }
        .product-list-group {
          display: none; /* 所有产品组默认隐藏 */
        }
        /* TAB 导航悬浮底部 */
        .hero-tabs {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 5%;
            padding: 14px 20px;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-top: 1px solid rgba(255,255,255,0.1);
            z-index: 10;
        }
        .tab-btn {
            background: rgba(255,255,255,90%);
            border: none;
            padding: 9px 22px;
            border-radius: 40px;
            font-size: 16px;
            font-weight: 500;
            color: #333;
            cursor: pointer;
            transition: all 0.25s;
            backdrop-filter: blur(4px);
            letter-spacing: 0.3px;
        }
        .tab-btn:hover {
            background: rgba(255,255,255,0.28);
            transform: translateY(-2px);
        }
        .tab-btn.active-tab {
            background: #4db045;
            color: #ffffff;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
        }

        /* ----- 下方产品列表：上图下标题，无多余文字，纯净网格 ----- */
        .products-section {
            margin-top: 16px;
            margin-bottom: 40px;
        }
        .section-label {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 26px;
            padding-left: 5px;
            border-left: 4px solid #1e293b;
            color: #0f172a;
        }
        /* 网格布局：完全自适应 */
        .product-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .product-card {
            background: #ffffff;
            border-radius: 20px;
            overflow: hidden;
            transition: all 0.3s cubic-bezier(0.2, 0, 0, 1);
            cursor: pointer;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.03);
            border: 1px solid #eef2f8;
        }
        .product-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 30px -12px rgba(0, 0, 0, 0.12);
            border-color: #cbdde9;
        }
        .card-img {
            width: 100%;
            aspect-ratio: 5 / 3;
            object-fit: cover;
            display: block;
            transition: transform 0.4s;
        }
        .product-card:hover .card-img {
            transform: scale(1.02);
        }
        .card-title {
            padding: 16px 12px 20px;
            font-size: 16px;
            font-weight: 600;
            text-align: center;
            color: #1e293b;
            background: #ffffff;
            border-top: 1px solid #f0f3f9;
        }

        /* 列表组容器 */
        .product-list-group {
            display: none;
        }
        .product-list-group.active-group {
            display: block;
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1200px) {
            .product-hub { padding: 28px 20px 48px; }
            .title-main { font-size: 32px; }
            .title-main img { width: 32px; }
            .product-grid { gap: 22px; }
        }
        @media (max-width: 1024px) {
            .product-grid { gap: 20px; }
            .card-title { font-size: 15px; padding: 14px 10px 18px; }
            .title-main { font-size: 30px; }
            .tab-btn { padding: 8px 18px; font-size: 14px; }
            .section-label { font-size: 20px; }
        }
        @media (max-width: 768px) {
            .product-grid { grid-template-columns: repeat(2, 1fr); gap: 18px; }
            .hero-tabs { gap: 8px; padding: 12px 15px; }
            .tab-btn { padding: 7px 16px; font-size: 13px; }
            .section-label { font-size: 18px; margin-bottom: 20px; }
            .product-hub { padding: 10px 0; }
            .title-main { font-size: 28px; }
            .title-sub { font-size: 13px; }
        }
        @media (max-width: 540px) {
            .product-grid { grid-template-columns: 1fr; gap: 16px; }
            .hero-tabs { flex-wrap: wrap; gap: 6px; padding: 10px 12px; }
            .tab-btn { flex: 1 0 auto; text-align: center; padding: 6px 10px; font-size: 12px; }
            .title-main { font-size: 24px; }
            .title-main img { width: 24px; }
            .section-label { font-size: 16px; margin-bottom: 16px; }
            .card-title { font-size: 14px; padding: 12px 10px 16px; }
            .hero-area { margin-bottom: 32px; }
        }
    </style>