a {
            text-decoration: none;
            color: inherit;
        }

        ul, ol {
            list-style: none;
        }

        /* ===== 导航栏 ===== */
         

      
     
        

        .nav-inner {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .nav-left {
            display: flex;
            align-items: center;
            gap: 60px;
        }

        /* Logo */
        .logo {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }

        .logo-img {
            height: 42px;
            width: auto;
            display: block;
        }

        .logo-dark {
            display: none;
        }
 

       

        .nav-link {
            display: block;
            padding: 0 22px;
            font-size: 15px;
            color: #fff;
            transition: color 0.3s ease;
            height: 80px;
            line-height: 80px;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #40a9ff;
        }

        .nav-item:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        /* 下拉菜单 */
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(10px);
            background: rgba(255,255,255,0.98);
            border-radius: 4px;
            box-shadow: 0 8px 32px rgba(0,0,0,0.1);
            padding: 8px 0;
            min-width: 180px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            border: 1px solid rgba(255,255,255,0.2);
        }

        .dropdown-item {
            display: block;
            padding: 10px 24px;
            font-size: 14px;
            color: #444;
            white-space: nowrap;
            transition: all 0.2s ease;
        }

        .dropdown-item:hover {
            background: #f0f9ff;
            color: #1890ff;
        }

        /* 右侧功能区 */
        .nav-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .phone-box {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #fff;
            transition: color 0.4s ease;
            white-space: nowrap;
        }

        .phone-box svg {
            width: 18px;
            height: 18px;
            fill: currentColor;
        }

        .icon-btn {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: #fff;
            transition: color 0.4s ease, background 0.3s ease;
            border-radius: 4px;
            position: relative;
        }

        .icon-btn:hover {
            background: rgba(255,255,255,0.1);
        }

       
        .icon-btn svg {
            width: 20px;
            height: 20px;
            fill: currentColor;
        }

        /* 语言选择下拉 */
        .lang-dropdown {
            position: absolute;
            top: calc(100% + 8px);
            right: 0;
            background: #fff;
            border-radius: 4px;
            box-shadow: 0 8px 32px rgba(0,0,0,0.12);
            padding: 8px 0;
            min-width: 160px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-8px);
            transition: all 0.3s ease;
            z-index: 1001;
        }

        .lang-dropdown.active {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .lang-item {
            display: block;
            padding: 10px 20px;
            font-size: 14px;
            color: #444;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .lang-item:hover {
            background: #f0f9ff;
            color: #1890ff;
        }

        /* 搜索弹窗 */
        .search-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.6);
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .search-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .search-box {
            width: 90%;
            max-width: 600px;
            background: #fff;
            border-radius: 8px;
            padding: 24px;
            transform: translateY(-20px);
            transition: transform 0.3s ease;
            position: relative;
        }

        .search-overlay.active .search-box {
            transform: translateY(0);
        }

        .search-input-wrap {
            display: flex;
            align-items: center;
            border: 2px solid #e8e8e8;
            border-radius: 8px;
            padding: 0 16px;
            transition: border-color 0.3s ease;
        }

        .search-input-wrap:focus-within {
            border-color: #1890ff;
        }

        .search-input-wrap input {
            flex: 1;
            border: none;
            outline: none;
            padding: 14px 0;
            font-size: 16px;
            color: #333;
        }

        .search-input-wrap input::placeholder {
            color: #bbb;
        }

        .search-input-wrap button {
            background: #1890ff;
            color: #fff;
            border: none;
            padding: 10px 24px;
            border-radius: 6px;
            font-size: 14px;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .search-input-wrap button:hover {
            background: #40a9ff;
        }

        .search-close {
            position: absolute;
            top: -40px;
            right: 0;
            width: 36px;
            height: 36px;
            background: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.3s ease;
        }

        .search-close:hover {
            background: #f5f5f5;
        }

        .search-close svg {
            width: 18px;
            height: 18px;
            fill: #666;
        }

        
        /* Banner 图片分端 */
        .banner-img-pc {
            display: block;
        }

        .banner-img-mobile {
            display: none;
        }

        /* ===== Banner轮播 ===== */
        .banner {
            position: relative;
            width: 100%;
            height: 100vh;
            min-height: 600px;
            overflow: hidden;
        }

        .banner-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 1s ease;
            z-index: 1;
        }

        .banner-slide.active {
            opacity: 1;
            z-index: 2;
        }

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

        .banner-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.45);
            z-index: 2;
        }

        .banner-content {
            position: absolute;
            top: 50%;
            left: 10%;
            transform: translateY(-50%);
            z-index: 3;
            color: #fff;
            max-width: 640px;
        }

        .banner-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 20px;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease 0.3s;
        }

        .banner-slide.active .banner-title {
            opacity: 1;
            transform: translateY(0);
        }

        .banner-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255,255,255,0.85);
            margin-bottom: 32px;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease 0.5s;
        }

        .banner-slide.active .banner-desc {
            opacity: 1;
            transform: translateY(0);
        }

        .banner-btn {
            display: inline-block;
            padding: 14px 36px;
            background: #1890ff;
            color: #fff;
            font-size: 15px;
            border-radius: 50px;
            transition: all 0.3s ease;
            opacity: 0;
            transform: translateY(30px);
            transition: all 0.8s ease 0.7s, background 0.3s ease;
        }

        .banner-slide.active .banner-btn {
            opacity: 1;
            transform: translateY(0);
        }

        .banner-btn:hover {
            background: #40a9ff;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(24,144,255,0.3);
        }

        /* Banner初始入场动画 */
        @keyframes bannerTitleIn {
            from { opacity: 0; transform: translateY(40px); }
            to { opacity: 1; transform: translateY(0); }
        }
        @keyframes bannerDescIn {
            from { opacity: 0; transform: translateY(40px); }
            to { opacity: 1; transform: translateY(0); }
        }
        @keyframes bannerBtnIn {
            from { opacity: 0; transform: translateY(40px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .banner-slide:first-child.active .banner-title {
            animation: bannerTitleIn 0.8s ease 0.5s both;
        }
        .banner-slide:first-child.active .banner-desc {
            animation: bannerDescIn 0.8s ease 0.7s both;
        }
        .banner-slide:first-child.active .banner-btn {
            animation: bannerBtnIn 0.8s ease 0.9s both;
        }

        /* 轮播箭头 */
        .banner-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            z-index: 4;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: rgba(255,255,255,0.15);
            backdrop-filter: blur(4px);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 1px solid rgba(255,255,255,0.2);
        }

        .banner-arrow:hover {
            background: rgba(255,255,255,0.3);
        }

        .banner-arrow svg {
            width: 20px;
            height: 20px;
            fill: #fff;
        }

        .banner-arrow.prev {
            left: 30px;
        }

        .banner-arrow.next {
            right: 30px;
        }

        /* 轮播指示点 */
        .banner-dots {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 4;
            display: flex;
            gap: 10px;
        }

        .banner-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255,255,255,0.4);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .banner-dot.active {
            background: #1890ff;
            width: 28px;
            border-radius: 5px;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1200px) {
            .nav-inner {
                padding: 0 20px;
            }

            .nav-left {
                gap: 30px;
            }

            .nav-link {
                padding: 0 16px;
                font-size: 14px;
            }
        }

        @media (max-width: 992px) {
            .nav-menu {
                display: none;
            }

            .mobile-menu-btn {
                display: flex;
            }

            .phone-box .phone-text {
                display: none;
            }

            .banner-title {
                font-size: 32px;
            }

            .banner-desc {
                font-size: 14px;
            }

            .banner-content {
                left: 8%;
                right: 8%;
                max-width: none;
            }

            /* 移动端 header 改成 sticky 占文档流，原本给 fixed header 留的 3.6rem 顶部 margin 必须清掉，否则 banner 和导航之间会空一段 */
            .page-banner {
                margin-top: 0 !important;
            }

            .page-banner img {
                width: 100%;
                height: auto;
                display: block;
            }
        }

        @media (max-width: 576px) {
            .nav-inner {
                height: 64px;
                padding: 0 16px;
            }

            .logo-img {
                height: 36px;
            }

            .phone-box {
                display: none;
            }
        }

        /* 平板及以下使用手机端banner */
        @media (max-width: 768px) {
            /* banner 减去移动端header高度（约62px），让banner从导航下方开始 */
            .banner {
                height: calc(100vh - 62px) !important;
                min-height: calc(100vh - 62px) !important;
                margin-top: 0 !important;
            }

            .banner .banner-slide {
                height: 100% !important;
            }

            .banner .banner-slide img.banner-img-mobile {
                display: block !important;
                width: 100% !important;
                height: 100% !important;
                object-fit: cover !important;
            }

            .banner-img-pc {
                display: none !important;
            }

            .banner-img-mobile {
                display: block !important;
            }

            .banner-content {
                left: 8%;
                right: 8%;
                max-width: none;
            }

            .banner-title {
                font-size: 24px;
            }

            .banner-desc {
                font-size: 13px;
                line-height: 1.7;
            }

            .banner-btn {
                padding: 12px 28px;
                font-size: 14px;
            }

            .banner-arrow {
                width: 40px;
                height: 40px;
            }

            .banner-arrow.prev {
                left: 12px;
            }

            .banner-arrow.next {
                right: 12px;
            }

            .banner-dots {
                bottom: 24px;
            }
        }
        /* ===== 产品展示模块 ===== */
        .products-section {
            padding: 100px 0;
            background: #f8f9fa;
            overflow: hidden;
        }

        .products-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-subtitle {
            font-size: 18px;
            color: #666;
            margin-bottom: 8px;
            font-weight: 400;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: #1a1a1a;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: #1890ff;
            margin: 12px auto 0;
            border-radius: 2px;
        }

        /* 分类标签 */
        .category-tabs {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-bottom: 50px;
            flex-wrap: wrap;
        }

        .tab-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            font-size: 15px;
            color: #555;
            background: #fff;
            border: 1px solid #e8e8e8;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.35s ease;
            white-space: nowrap;
            user-select: none;
        }

        .tab-item:hover {
            background: #1890ff;
            color: #fff;
            border-color: #1890ff;
            box-shadow: 0 4px 16px rgba(24,144,255,0.25);
        }

        .tab-item.active {
            background: #1890ff;
            color: #fff;
            border-color: #1890ff;
            box-shadow: 0 4px 16px rgba(24,144,255,0.25);
        }

        .tab-icon {
            width: 18px;
            height: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .tab-icon svg {
            width: 100%;
            height: 100%;
            fill: currentColor;
        }

        /* 产品滑动区 */
        .products-slider {
            position: relative;
            padding: 0 60px;
        }

        .slider-wrapper {
            overflow: hidden;
            cursor: grab;
        }

        .slider-wrapper:active {
            cursor: grabbing;
        }

        .slider-track {
            display: flex;
            gap: 24px;
            transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1);
        }

        .slider-track.dragging {
            transition: none;
        }

        .product-card {
            flex: 0 0 calc(33.333% - 16px);
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.06);
            transition: all 0.35s ease;
            cursor: pointer;
        }

        .product-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 16px 40px rgba(0,0,0,0.1);
        }

        .product-img {
            width: 100%;
            height: 240px;
            overflow: hidden;
            position: relative;
        }

        .product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .product-card:hover .product-img img {
            transform: scale(1.08);
        }

        .product-info {
            padding: 20px 24px 24px;
            text-align: center;
        }

        .product-name {
            font-size: 17px;
            font-weight: 600;
            color: #1a1a1a;
            margin-bottom: 8px;
        }

        .product-desc {
            font-size: 13px;
            color: #888;
            line-height: 1.6;
        }

        /* 滑动箭头 */
        .slider-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #fff;
            border: 1px solid #e8e8e8;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            z-index: 5;
            box-shadow: 0 2px 12px rgba(0,0,0,0.08);
        }

        .slider-arrow:hover {
            background: #1890ff;
            border-color: #1890ff;
        }

        .slider-arrow:hover svg {
            fill: #fff;
        }

        .slider-arrow svg {
            width: 20px;
            height: 20px;
            fill: #666;
            transition: fill 0.3s ease;
        }

        .slider-arrow.prev {
            left: 0;
        }

        .slider-arrow.next {
            right: 0;
        }

        .slider-arrow.disabled {
            opacity: 0.3;
            pointer-events: none;
        }

        /* 入场动画 */
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
        }

        .animate-on-scroll.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .animate-left {
            opacity: 0;
            transform: translateX(-60px);
            transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
        }

        .animate-left.visible {
            opacity: 1;
            transform: translateX(0);
        }

        .animate-right {
            opacity: 0;
            transform: translateX(60px);
            transition: opacity 0.8s cubic-bezier(0.25, 1, 0.5, 1), transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
        }

        .animate-right.visible {
            opacity: 1;
            transform: translateX(0);
        }

        .animate-scale {
            opacity: 0;
            transform: scale(0.85);
            transition: opacity 0.7s cubic-bezier(0.25, 1, 0.5, 1), transform 0.7s cubic-bezier(0.25, 1, 0.5, 1);
        }

        .animate-scale.visible {
            opacity: 1;
            transform: scale(1);
        }

        .animate-fade {
            opacity: 0;
            transition: opacity 1s ease;
        }

        .animate-fade.visible {
            opacity: 1;
        }

        /* 头部导航入场动画 */
        @keyframes headerSlideDown {
            from { opacity: 0; transform: translateY(-100%); }
            to { opacity: 1; transform: translateY(0); }
        }

     

        .delay-1 { transition-delay: 0.12s; }
        .delay-2 { transition-delay: 0.24s; }
        .delay-3 { transition-delay: 0.36s; }
        .delay-4 { transition-delay: 0.48s; }
        .delay-5 { transition-delay: 0.60s; }

        @media (max-width: 1200px) {
            .product-card {
                flex: 0 0 calc(50% - 12px);
            }
        }

        @media (max-width: 768px) {
            .products-section {
                padding: 60px 0;
            }

            .section-title {
                font-size: 26px;
            }

            .category-tabs {
                gap: 8px;
            }

            .tab-item {
                padding: 10px 28px;
                font-size: 13px;
            }

            .products-slider {
                padding: 0 40px;
            }

            .product-card {
                flex: 0 0 calc(100% - 0px);
            }

            .slider-arrow {
                width: 40px;
                height: 40px;
            }

            .product-img {
                height: 200px;
            }
        }

        /* ===== 公司简介模块 ===== */
        .about-section {
            position: relative;
            padding: 100px 0 80px;
            overflow: hidden;
            color: #fff;
            text-align: center;
            background: #0a0e27;
        }

        .about-bg-video {
            position: absolute;
            top: 50%;
            left: 50%;
            min-width: 100%;
            min-height: 100%;
            width: auto;
            height: auto;
            transform: translate(-50%, -50%);
            object-fit: cover;
            z-index: 0;
        }

        .about-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.55);
            z-index: 1;
        }

        .about-container {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .about-header {
            margin-bottom: 60px;
        }

        .about-title {
            font-size: 38px;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 4px;
        }

        .about-desc {
            font-size: 18px;
            margin-bottom: 24px;
            font-weight: 500;
            color: rgba(255,255,255,0.95);
        }

        .about-text {
            font-size: 14px;
            line-height: 2;
            color: rgba(255,255,255,0.78);
            max-width: 880px;
            margin: 0 auto;
        }

        /* 数据区 */
        .about-stats {
            display: flex;
            justify-content: space-around;
            align-items: center;
            margin-bottom: 50px;
            flex-wrap: wrap;
            gap: 24px 0;
        }

        .stat-item {
            flex: 1 1 0;
            min-width: 140px;
            text-align: center;
            padding: 12px 8px;
            position: relative;
        }

        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 20%;
            height: 60%;
            width: 1px;
            background: rgba(255,255,255,0.18);
        }

        .stat-number {
            font-size: 52px;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            line-height: 1;
            font-family: 'Arial', sans-serif;
        }

        .stat-unit {
            font-size: 18px;
            color: rgba(255,255,255,0.85);
            margin-left: 2px;
            display: inline-block;
            font-weight: 400;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            margin-top: 12px;
            letter-spacing: 1px;
        }

        /* 播放按钮 */
        .about-play {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            border: 2px solid #fff;
            background: rgba(255,255,255,0.12);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.35s ease;
            backdrop-filter: blur(4px);
        }

        .about-play:hover {
            background: rgba(255,255,255,0.22);
            transform: scale(1.08);
            box-shadow: 0 8px 24px rgba(0,0,0,0.3);
        }

        .about-play svg {
            width: 30px;
            height: 30px;
            fill: #fff;
            margin-left: 4px;
        }

        /* 视频弹窗 */
        .video-modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.9);
            z-index: 9999;
            display: none;
            align-items: center;
            justify-content: center;
            padding: 70px 24px 24px;
            backdrop-filter: blur(6px);
        }

        .video-modal-overlay.active {
            display: flex;
            animation: fadeIn 0.3s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        .video-modal {
            position: relative;
            max-width: 960px;
            width: 100%;
            animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

        @keyframes scaleIn {
            from { transform: scale(0.85); opacity: 0; }
            to { transform: scale(1); opacity: 1; }
        }

        .video-modal video {
            width: 100%;
            display: block;
            border-radius: 8px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.5);
            background: #000;
        }

        .video-close {
            position: absolute;
            top: 20px;
            right: 20px;
            width: 44px;
            height: 44px;
            border: none;
            background: rgba(255,255,255,0.15);
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            z-index: 10000;
        }

        .video-close:hover {
            background: rgba(255,255,255,0.3);
            transform: rotate(90deg);
        }

        .video-close svg {
            width: 22px;
            height: 22px;
            fill: #fff;
        }

        @media (max-width: 768px) {
            .about-section {
                padding: 70px 0 60px;
            }

            .about-title {
                font-size: 28px;
            }

            .about-desc {
                font-size: 15px;
            }

            .about-text {
                font-size: 13px;
                line-height: 1.9;
            }

            .stat-number {
                font-size: 36px;
            }

            .stat-unit {
                font-size: 14px;
            }

            .stat-label {
                font-size: 12px;
            }

            .stat-item:not(:last-child)::after {
                display: none;
            }

            .about-stats {
                gap: 16px 0;
            }

            .about-play {
                width: 56px;
                height: 56px;
            }

            .about-play svg {
                width: 22px;
                height: 22px;
            }

            .video-close {
                top: 16px;
                right: 16px;
                width: 40px;
                height: 40px;
            }
        }

        /* ===== 应用解决方案 ===== */
        .solutions-section {
            background: #fff;
        }

        .solutions-header {
            text-align: center;
            padding: 80px 0 40px;
        }

        .solutions-title {
            font-size: 34px;
            font-weight: 700;
            color: #333;
            letter-spacing: 2px;
            margin-bottom: 0;
        }

        .solutions-tabs {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 0;
            border-bottom: 1px solid #e8e8e8;
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .solution-tab {
            padding: 16px 32px;
            font-size: 16px;
            color: #666;
            cursor: pointer;
            position: relative;
            transition: color 0.3s ease;
            white-space: nowrap;
        }

        .solution-tab:hover {
            color: #1890ff;
        }

        .solution-tab.active {
            color: #1890ff;
            font-weight: 500;
        }

        .solution-tab.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 50%;
            transform: translateX(-50%);
            width: 32px;
            height: 3px;
            background: #1890ff;
            border-radius: 2px;
        }

        .solutions-content {
            position: relative;
            width: 100%;
            height: 650px;
            overflow: hidden;
        }

        .solution-panel {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.6s ease, visibility 0.6s ease;
        }

        .solution-panel.active {
            opacity: 1;
            visibility: visible;
        }

        .solution-panel-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
        }

        .solution-panel-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.45);
            z-index: 1;
        }

        .solution-panel-content {
            position: relative;
            z-index: 2;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0px 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .solution-panel-title {
            font-size: 36px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 2px;
        }

        .solution-panel-subtitle {
            font-size: 20px;
            font-weight: 500;
            color: rgba(255,255,255,0.95);
            margin-bottom: 20px;
        }

        .solution-panel-desc {
            font-size: 14px;
            line-height: 2;
            color: rgba(255,255,255,0.78);
            max-width: 560px;
            margin-bottom: 32px;
        }

        .solution-panel-btn {
            display: inline-block;
            padding: 10px 28px;
            border: 1px solid rgba(255,255,255,0.5);
            border-radius: 4px;
            color: #fff;
            font-size: 14px;
            text-decoration: none;
            transition: all 0.3s ease;
            width: fit-content;
        }

        .solution-panel-btn:hover {
            background: #1890ff;
            border-color: #1890ff;
            color: #fff;
        }

        @media (max-width: 768px) {
            .solutions-header {
                padding: 50px 0 24px;
            }

            .solutions-title {
                font-size: 26px;
            }

            .solutions-tabs {
                overflow-x: auto;
                justify-content: flex-start;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }

            .solutions-tabs::-webkit-scrollbar {
                display: none;
            }

            .solution-tab {
                padding: 12px 20px;
                font-size: 14px;
            }

            .solutions-content {
                height: 520px;
            }

            .solution-panel-content {
                padding: 40px 20px;
            }

            .solution-panel-title {
                font-size: 26px;
            }

            .solution-panel-subtitle {
                font-size: 16px;
            }

            .solution-panel-desc {
                font-size: 13px;
            }
        }

        /* ===== 新闻中心 ===== */
        .news-section {
            padding: 80px 0 60px;
            background: #fff;
        }

        .news-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            max-width: 1200px;
            margin: 0 auto 40px;
            padding: 0 24px;
        }

        .news-title {
            font-size: 32px;
            font-weight: 700;
            color: #333;
            letter-spacing: 2px;
        }

        .news-more {
            display: flex;
            align-items: center;
            gap: 6px;
            color: #666;
            font-size: 14px;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .news-more:hover {
            color: #1890ff;
        }

        .news-more svg {
            width: 18px;
            height: 18px;
            fill: #1890ff;
        }

        /* 上方大图区 */
        .news-featured {
            max-width: 1200px;
            margin: 0 auto 40px;
            padding: 0 24px;
            display: flex;
            gap: 40px;
            align-items: stretch;
        }

        .news-featured-img {
            flex: 1;
            min-width: 0;
        }

        .news-featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 6px;
            min-height: 280px;
        }

        .news-featured-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-width: 0;
        }

        .news-featured-date {
            font-size: 13px;
            color: #999;
            margin-bottom: 12px;
        }

        .news-featured-title {
            font-size: 20px;
            font-weight: 700;
            color: #1890ff;
            line-height: 1.5;
            margin-bottom: 16px;
        }

        .news-featured-desc {
            font-size: 14px;
            line-height: 1.8;
            color: #666;
        }

        /* 下方小卡片区 */
        .news-slider-area {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
        }

        .news-slider-wrapper {
            overflow: hidden;
        }

        .news-slider-track {
            display: flex;
            gap: 20px;
            transition: transform 0.4s ease;
        }

        .news-card {
            flex: 0 0 calc(25% - 15px);
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .news-card:hover {
            transform: translateY(-4px);
        }

        .news-card-img {
            width: 100%;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            border-radius: 6px;
            margin-bottom: 12px;
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .news-card:hover .news-card-img img {
            transform: scale(1.05);
        }

        .news-card-title {
            font-size: 14px;
            font-weight: 500;
            color: #333;
            line-height: 1.5;
            margin-bottom: 6px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card-date {
            font-size: 12px;
            color: #999;
        }

        .news-slider-arrow {
            position: absolute;
            top: 30%;
            transform: translateY(-50%);
            width: 36px;
            height: 36px;
            background: #fff;
            border: 1px solid #e8e8e8;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(0,0,0,0.08);
        }

        .news-slider-arrow:hover {
            background: #1890ff;
            border-color: #1890ff;
        }

        .news-slider-arrow:hover svg {
            fill: #fff;
        }

        .news-slider-arrow svg {
            width: 18px;
            height: 18px;
            fill: #666;
        }

        .news-slider-arrow.prev {
            left: 4px;
        }

        .news-slider-arrow.next {
            right: 4px;
        }

        .news-slider-arrow.disabled {
            opacity: 0.3;
            pointer-events: none;
        }

        @media (max-width: 992px) {
            .news-featured {
                flex-direction: column;
                gap: 24px;
            }

            .news-featured-img img {
                min-height: auto;
                aspect-ratio: 16 / 9;
            }

            .news-card {
                flex: 0 0 calc(33.333% - 14px);
            }
        }

        @media (max-width: 768px) {
            .news-section {
                padding: 50px 0 40px;
            }

            .news-title {
                font-size: 24px;
            }

            .news-card {
                flex: 0 0 calc(50% - 10px);
            }

            .news-featured-title {
                font-size: 17px;
            }
        }

        @media (max-width: 480px) {
            .news-card {
                flex: 0 0 100%;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #2a2a2a;
            color: #aaa;
            padding: 60px 0 0;
        }

        .footer-main {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px 50px;
            display: flex;
            gap: 60px;
        }

        .footer-brand {
            flex: 0 0 260px;
        }

        .footer-brand img {
            height: 40px;
            margin-bottom: 20px;
        }

        .footer-contact-item {
            font-size: 13px;
            line-height: 2.2;
            color: #aaa;
        }

        .footer-contact-item span {
            display: inline-block;
            width: 52px;
            color: #888;
        }

        .footer-nav {
            flex: 1;
            display: flex;
            justify-content: space-between;
            gap: 30px;
        }

        .footer-nav-col {
            flex: 1;
            min-width: 0;
        }

        .footer-nav-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-nav-link {
            display: block;
            font-size: 13px;
            color: #aaa;
            line-height: 2.4;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-nav-link:hover {
            color: #1890ff;
        }

        .footer-bottom {
            border-top: 1px solid #3a3a3a;
            padding: 20px 24px;
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
            color: #777;
        }

        .footer-bottom a {
            color: #777;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer-bottom a:hover {
            color: #1890ff;
        }

        .footer-backtop {
            display: flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            color: #777;
            transition: color 0.3s ease;
        }

        .footer-backtop:hover {
            color: #1890ff;
        }

        .footer-backtop svg {
            width: 16px;
            height: 16px;
            fill: currentColor;
        }

        @media (max-width: 992px) {
            .footer-main {
                flex-direction: column;
                gap: 40px;
            }

            .footer-brand {
                flex: none;
            }

            .footer-nav {
                flex-wrap: wrap;
                gap: 24px;
            }

            .footer-nav-col {
                flex: 0 0 calc(33.333% - 16px);
            }
        }

        @media (max-width: 576px) {
            .footer-nav-col {
                flex: 0 0 calc(50% - 12px);
            }

            .footer-bottom {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
        }