/* 第一屏 - 视频背景 */
        .slide-1 {
            position: relative;
            background: #000; /* 视频加载前的背景色 */
        }
        
        .video-background {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 1;
        }
        
        .video-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.3);
            z-index: 2;
        }
        
        .slide-1 .title {
            font-size: 3.5rem;
            text-align: center;
            z-index: 3;
            font-weight: 700;
            line-height: 1.2;
            color: white;
            position: relative;
            margin: auto;
        }
        
        /* 第二屏 - 左右布局 */
        .slide-2 {
            background-color: #f8f9fa;
            position: relative;
            overflow: hidden;
            width: 100%;
            height: 100%;
        }
        
        /* 第二屏背景图片容器 */
        .slide-2-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }

        .slide-2-bg::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            /*background: linear-gradient(
                90deg,
                rgba(0, 43, 69, 0.6) 0%,
                rgba(0, 107, 171, 0.4) 50%,
                rgba(0, 43, 69, 0.6) 100% 
            );*/
            pointer-events: none; 
        }
        
        .slide-2-bg img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0;
            transition: opacity 0.8s ease;
        }
        
        .slide-2-bg img.active {
            opacity: 1;
        }
        
        .slide-2 .content-container {
            display: flex;
            flex-direction: column;
            position: relative;
            z-index: 1;
        }
        
        .left-panel {
            width: 100%;
            display: flex;
            flex-direction: column;
            border-bottom: 1px solid rgba(217, 217, 217, 0.2);
            margin-bottom: 20px;
            justify-content: space-between;
        }
        
        .left-panel .title {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: #1a2a57;
            font-weight: 600;
        }
        
        .menu {
            list-style: none;
            display: flex;
            flex-wrap: wrap;
            height: 450px;
        }
        
        .menu-item {
            padding: 33px 20px 33px 400px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            color: #fff;
            transition: all 0.3s ease;
            flex: 1;
            width: 850px;
            margin-left: -400px;
            border-top: 1px solid rgba(217, 217, 217, 0.2);
            display: flex;
            align-items: center;
        }
        .menu-item img{
            margin: 0 18px 0 0;
        }
        .menu-item-a::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 90px;
            top: 0;
            right: 40px;
            background: url(/imgll/icon2-0.png) no-repeat center;
            opacity: 0;
            transition: all 0.3s ease;
        }
        
        .menu-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(to right, transparent, #E1B306);
            transition: left 1s ease;
        }
        
        .menu-item:hover::before {
            left: 100%;
        }
        .menu-item:hover .menu-item-a::after {
            opacity: 1;
        }
        
        .menu-item.active {
            background: linear-gradient(to right, transparent, #E1B306);
            color: white;
            font-weight: bold;
        }

        .menu-item.active .menu-item-a::after {
            opacity: 1;
        }

        .gy-pagination-container {
            position: absolute;
            bottom: 20px;
            right: 10px;
            color: #fff;
            width: 80px;
            height: 118px;
            visibility: hidden;
        }
        .gy-pagination-container .gy-current-pag,.gy-pagination-container .gy-current-page{
            font-size: 36px;
            color: #F8C300;
        }
        .gy-pagination-container>.gy-total-pages{
            font-size: 18px;
            position: absolute;
            bottom: 10px;
            right: 0;
        }
        
        .slide-2 .right-panel {
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            color: #fff;
        }
        .slide-2 .right-panel>div{
            height: 270px;
            border-top: 1px solid rgba(217, 217, 217, 0.2);
            color: #fff;
            padding: 40px 100px;
        }
        
        .section-title {
            font-size: 24px;
            margin-bottom: 15px;
            font-weight: 600;
        }
        .section-description p{
            margin: 0 0 40px 0;
        }
        .section-description div{
            display: flex;
            flex-direction: row;
            flex-wrap: wrap;
        }

        .section-description span{
            line-height: 40px;
            margin: 0 40px 0 0;
            white-space: nowrap;
            position: relative;
            padding: 0 0 0 15px;
        }
        .section-description span::before {
            content: '';
            position: absolute;
            left: 0;
            pointer-events: none;
            transform: translateY(14px);
            width: 18px;
            height: 18px;
            background: url(/imgll/FigmaDDSSlicePNG33d6712fe607515d29f6d30aff92a534.png) no-repeat;
        }

        /* 第三屏 - 左右布局 */
        .slide-3 {
            background: linear-gradient(45deg,rgba(0,43,69,0.2) 0%, rgba(0,0,0,0) 20%, rgba(0,0,0,0) 80%, rgba(248,195,0,0.2) 100%);
        }
        
        .slide-3 .left3-panel {
            width: 100%;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        
        .slide-3 .right3-panel {
            width: 100%;
        }

        .slide-3 .right3-panel p{
          font-size: 14px;
          padding: 0 10px;
        }
        
        .achievements {
            display: flex;
            flex-direction: column;
        }
        .achievements-m{
            display: none;
            padding: 0 10px 30px 10px;
        }
        
        .achievement-item {
            display: flex;
            justify-content: space-between;
            color: #000;
        }

        .achievement-item-xx{
            margin: 60px 0;
            border-top: 1px dashed #000;
        }
        
        .achievement-item h3 {
            font-size: 48px;
            font-weight: bold;
            color: #F8C300;
            margin-bottom: 5px;
            display: flex;
        }
        .achievement-item span {
            font-size: 16px;
            color: #000;
            padding: 10px 0 0 5px;
        }
        
        .map-container {
            width: 100%;
            height: auto;
            margin: 20px 0 0 0;
            text-align: center;
        }
        .map-container img{
            width: 100%;
        }
        
        /* 第四屏 - Swiper轮播 */
        .slide-4 {
            position: relative;
            overflow: hidden;
        }

        /* 第四屏背景Swiper */
        .slide-4-bg-swiper {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
        }

        .slide-4-bg-swiper::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            /*background: linear-gradient(
              to right, 
              rgba(0, 28, 44, 0.6) 0%, 
              rgba(0, 107, 171, 0.2) 80%
            );*/
            pointer-events: none; 
        }

        .slide-4-bg-swiper .swiper-slide {
            background-size: cover;
            background-position: center;
        }

        /* 第四屏主要内容容器 */
        .slide-4-main-container {
            position: relative;
            z-index: 1;
            width: 100%;
            height: 100dvh;
            max-width: 1520px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
        }

        /* 第四屏内容Swiper */
        .slide-4-content-swiper {
            /*flex: 1;
            width: 100%;*/
        }

        .slide-4-content-swiper .swiper-slide {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 第四屏内容包装器 */
        .slide-4-content-wrapper {
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .slide-4 .description-section {
            color: #fff;
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }

        .project-bom{
            background: linear-gradient(90deg, rgba(248, 195, 0, 0.6) 0%, rgba(146,115,0,0) 100%);
            margin: 0 0 10px 0;
        }

        .project-title {
            font-size: 22px;
            font-weight: bold;
            line-height: 1.5;
            width: 800px;
        }

        .project-details {
            margin-top: 20px;
        }

        .project-details p {
            margin: 0 0 20px 0;
            line-height: 1.5;
        }

        .thumbnails {
            display: flex;
            gap: 15px;
            justify-content: flex-end;
            padding: 0 10px 30px 10px;
            align-items: center;
        }

        .thumbnail {
            width: 192px;
            height: 108px;
            overflow: hidden;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .thumbnail img{
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .thumbnail:hover img{
            transform: scale(1.05);
        }

        .thumbnail.active {
            border: 3px solid #F8C300;
            box-shadow: 0 4px 12px rgba(248, 195, 0, 0.3);
        }

        /* 第五屏样式 */
        .slide-5 {
            background-color: #f8f9fa;
            padding: 20px 0;
        }
        
        .pro-header {
            text-align: center;
            padding: 160px 0 60px 0;
            font-size: 48px;
            font-weight: bold;
            color: #000000;
            text-transform: uppercase;
        }
        
        .pro-tabs {
            display: flex;
            justify-content: space-between;
            margin-bottom: 40px;
        }
        
        .pro-tab {
            cursor: pointer;
            transition: all 0.3s;
            font-size: 14px;
            max-width: 180px;
            text-align: center;
            padding: 10px;
            color: #333;
        }
        
        .pro-tab.active {
            font-weight: bold;
            background-color: rgba(248,195,0,0.2);
        }
        
        .pro-tab:hover {
            color: #F8C300;
        }
        
        .pro-content {
            display: none;
            width: 100%;
            flex: 1;
            position: relative;
        }
        
        .pro-content.active {
            display: block;
        }
        
        .pro-swiper-container {
            position: relative;
            height: 480px;
            width: 100%;
            padding: 0 130px;
        }
        
        .pro-swiper {
            overflow: visible;
        }
        
        .pro-slide {
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 22px;
            font-weight: bold;
            transition: transform 0.3s;
        }
        
        .pro-slide img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }
        
        .pro-slide p{
            padding: 28px 0 0 0;
            text-align: center;
            color: #000;
        }
        
        .pro-l-progress {
            height: 4px;
            background: #e0e0e0;
            overflow: hidden;
            width: 350px !important;
            position: absolute;
            top: auto !important;
            bottom: 0;
            display: none;
        }
        
        .pro-progress-bar {
            height: 100%;
            background: #000;
            width: 0%;
            transition: width 0.3s;
        }
        
        .pro-nav-btn {
            position: absolute;
            bottom: 35px;
            width: 75px;
            height: 45px;
            border: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            z-index: 10;
            transition: all 0.3s;
            background: transparent;
            color: #000;
            opacity: .8;
        }
        
        .pro-nav-btn:hover {
            color: #F8C300;
            opacity: 1;
            box-shadow: 0 2px 10px rgba(0,0,0,0.4);
        }

        .pro-nav-btn::after{
            font-size: 22px;
        }
        
        .pro-prev {
            left: 110px;
        }
        
        .pro-next {
            left: 190px;
        }

        .slide-image-wrapper {
            position: relative;
            width: 100%;
            height: 380px;
        }

        .slide-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.4);
            color: white;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease;
            padding: 18px 35px;
            box-sizing: border-box;
        }

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

        .slide-description {
            font-size: 16px;
            line-height: 1.4;
            font-weight: 400;
        }

        .pro-slide a {
            text-decoration: none;
            color: inherit;
            display: block;
            height: 100%;
        }

        @media (min-width: 1024px) {
            .slide-2 .content-container {
                flex-direction: row;
            }
            
            .left-panel {
                width: 450px;
                border-right: 1px solid rgba(217, 217, 217, 0.2);
                border-bottom: none;
                margin-bottom: 0;
            }
            
            .menu {
                flex-direction: column;
            }
            
            .slide-3 .content-container {
                flex-direction: row;
            }
            
            .slide-3 .left3-panel {
                width: 520px;
                border-bottom: none;
                margin-bottom: 0;
                padding: 0 0 80px 0;
                border-right:none;
            }
            
            .slide-3 .right3-panel {
                width: 1000px;
                padding: 180px 0 0 0;
            }
            .slide-3 .right3-panel p{
                padding-left: 280px;
                font-size: 18px;
                line-height: 1.8;
            }
            .slide-1 .title {
                font-size: 44px;
            }

            .pro-swiper-container {
                padding: 0;
            }
            
            .pro-nav-btn {
                top: 38%;
                width: 60px;
                height: 60px;
                background: #fff;
                border-radius: 50%;
            }
            
            .pro-prev {
                left: 2vw;
            }
            
            .pro-next {
                left: auto;
                right: 2vw;
            }
            .slide-4-main-container{
                flex-direction: row;
                align-items: flex-end;
            }

            .slide-4 .description-section {
                width: 60%;
                padding: 0 0 80px 0;
            }
            
            .thumbnails {
                padding: 0 0 80px 0;
            }
        }

        @media (max-width: 1025px) {
            .slide-4 .title-ty {
                margin-bottom: 30px;
            }

            .thumbnail {
                width: 140px;
                height: 80px;
            }
            
            .project-title {
                font-size: 16px;
            }

            .project-details {
                font-size: .9rem;
                margin: 0;
            }

            .project-details p{
                margin: 0 0 10px 0;
                font-size: 16px;
            }

            .swiper-slide {
                padding: 0;
            }

            .slide-2-bg img{
                left: -190%;
                width: auto;
            }

            .slide-2-bg img:nth-child(2){
                left: -120%;
            }

            .slide-2-bg img:nth-child(4){
                left: -40%;
            }

            .slide-2-bg img:nth-child(5){
                left: -140%;
            }

            .left-panel{
              border-bottom: none;
            }
            .menu {
              flex-direction: column;
              height: auto;
              display: none;
            }
            .title-ty{
                padding: 80px 10px 0 10px;
            }
            .title-ty img{
              width: 16px;
            }
            .slide-3 .right-panel{
              padding: 10px;
            }
            .slide-3 .right-panel img{
              width: 100%;
            }
            .map-container img{
                width: auto;
                height: 26vh;
                margin: auto;
            }
            .achievements{
              display: none;
            }
            .achievements-m{
              display: block;
            }
            .section-title{
              font-size: 18px;
              margin-bottom: 10px;
            }
            .section-description p{
              margin: 0 0 15px 0;
              font-size: 16px;
            }
            .section-description span{
              white-space: initial;
              line-height: 24px;
              font-size: 16px;
            }
            .section-description span::before{
              transform: translateY(7px);
            }
            .menu-item-a::after{
                  height: 66px;
            }
            .gy-pagination-container {
              visibility: visible;
            }
            .description-section{
              padding: 10px;
            }
            
            .title-ty h2 {
                font-size: 16px;
                margin: 40px 0 10px 0;
            }
            
            .title-ty div {
                font-size: 20px;
            }
            
            .slide-1 .title {
                font-size: 36px;
                width: 70%;
            }
            
            .menu-item {
                padding: 20px 15px;
                margin-left: 0;
                width: 100%;
            }
            
            .slide-2 .right-panel > div {
                padding: 30px 10px;
                height: auto;
            }

            .slide-4-bg3{
                background-position: 60% 70% !important;
            }


            .slide-3-txt-m{
                display: block;
            }

            .slide-3-txt-pc{
                display: none;
            }
                
            
            .thumbnails {
                position: relative;
                bottom: auto;
                justify-content: center;
                /*gap: 8px;*/
            }
            
            .thumbnail {
                width: 120px;
                height: 70px;
            }
            
            .pro-header {
                font-size: 24px;
                padding: 0 0 0 0;
            }
            
            .pro-tabs {
                display: none;
            }

            .pro-content {
                /*width: 100%;*/
            }
            
            .pro-swiper-container {
                padding: 0;
                height: auto;
                position: absolute;
                top: 50%;
                margin-top: -120px;
            }
            
            .pro-swiper {
                height: 200px;
            }
            
            .pro-slide {
                /*height: 330px;*/
                height: auto;
            }
            
            .pro-slide img {
                height: 160px;
            }
            .pro-slide p{
                padding: 10px 0 0 0;
                font-size: 16px;
                width: 100%;
                overflow: hidden;
                white-space: nowrap;
                text-overflow: ellipsis;
            }
            
            .pro-nav-btn {
                width: 46px;
                height: 34px;
                top: auto;
                bottom: 0;
                bottom: 52px;
                font-size: 19px;
                display: none;
            }
            
            .pro-prev {
                left: auto;
                right: 110px;
            }
            
            .pro-next {
                left: auto;
                right: 10px;
            }
            
            .pro-l-progress {
                width: 150px !important;
                left: 20px !important;
                bottom: 70px;
                display: none;
            }
            .slide-image-wrapper{
                height: auto;
            }
            .slide-overlay.active {
                opacity: 0;
                visibility: hidden;
            }
            
            .achievement-item{
                font-size: 12px;
            }
            .achievement-item h3 {
                font-size: 24px;
            }
            .achievement-item span{
                font-size: 12px;
                padding: 0px 0 0 3px;
            }
            
            .achievement-item-xx{
                margin: 20px 0;
            }
            .slide-4-content-wrapper{
                padding: 0 0 90px 0;
            }
            .slide-description{
                font-size: 12px;
            }
            .slide-overlay{
                padding: 10px;
            }
            
        }
        
        /* 产物轮播图片和标题样式 */
        .pro-swiper .swiper-slide {
            transition: all 0.5s ease;
        }

        .pro-swiper .swiper-slide:not(.swiper-slide-active) .slide-image-wrapper img {
            opacity: 0.6 !important;
            filter: brightness(0.8);
            transition: opacity 0.5s ease;
        }

        .pro-swiper .swiper-slide:not(.swiper-slide-active) p {
            opacity: 0 !important;
            visibility: hidden !important;
            transform: translateY(10px);
            transition: all 0.5s ease;
        }

        .pro-swiper .swiper-slide-active .slide-image-wrapper img {
            opacity: 1 !important;
            filter: brightness(1);
        }

        .pro-swiper .swiper-slide-active p {
            opacity: 1 !important;
            visibility: visible !important;
            transform: translateY(0);
        }

        .pro-swiper .swiper-slide:not(.swiper-slide-active) .slide-overlay {
            opacity: 0 !important;
            visibility: hidden !important;
        }

        .pro-swiper .swiper-slide-active .slide-overlay.active {
            opacity: 1 !important;
            visibility: visible !important;
        }

        .slide-image-wrapper {
            position: relative;
            overflow: hidden;
        }

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