* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Verdana, Geneva, Tahoma, sans-serif;
        }

        body {
            background-color: #f5f5f5;
            scroll-behavior: smooth;
            padding-top: 40px; /* 为下载APP框架和header留出空间 */
        }

        /* 新增：下载APP框架样式 - PC端 */
        .download-section {
            width: 100%;
            background-color: #1a1a1a;
            padding: 10px 12%; /* 高度减少一半 */
            opacity: 0;
            transform: translateY(-20px);
            transition: opacity 0.8s ease, transform 0.8s ease;
            position: fixed;
            top: 0;
            left: 0;
            z-index: 2000;
        }

        .download-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .download-container {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: flex-end;
        }

        .download-btn {
            background-color: transparent;
            color: #ffffff;
            border: 1px solid #ffffff; /* 边框1px */
            padding: 6px 15px; /* 按钮大小缩小一半 */
            font-size: 0.8rem; /* 字体缩小 */
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.3s ease;
            font-weight: normal; /* 字体不加粗 */
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .download-btn:hover {
            background-color: #ffffff;
            color: #1a1a1a;
        }

        .download-btn i {
            margin-right: 8px;
            font-size: 0.9em;
        }

        /* 移动端隐藏下载APP框架 */
        @media (max-width: 768px) {
            .download-section {
                display: none;
            }
            
            body {
                padding-top: 0; /* 移动端不需要为下载APP框架留出空间 */
            }
        }

        /* 新增：弹窗样式 */
        .download-modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 3000;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
            justify-content: center;
            align-items: center;
        }

        .download-modal-overlay.active {
            display: flex;
            opacity: 1;
        }

        .download-modal {
            background-color: #ffffff;
            border-radius: 15px;
            width: 40%;
            max-width: 500px;
            position: relative;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
            transform: translateY(20px);
            transition: transform 0.3s ease;
        }

        .download-modal-overlay.active .download-modal {
            transform: translateY(0);
        }

        .download-modal-close {
            position: absolute;
            top: 15px;
            right: 15px;
            background: none;
            border: none;
            font-size: 24px;
            color: #000000;
            cursor: pointer;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: background-color 0.3s ease;
            z-index: 3001;
        }

        .download-modal-close:hover {
            background-color: #f5f5f5;
        }

        .download-modal-content {
            padding: 40px;
            text-align: center;
        }

        .download-modal-image {
            width: 100%;
            max-width: 300px;
            margin: 0 auto 30px;
            display: block;
        }

        /* 修改弹窗文字样式 - 再缩小一点 */
        .download-modal-text {
            font-size: 0.85rem; /* 从0.9rem改为0.85rem */
            line-height: 1.6;
            color: #333333;
            text-align: left; /* 居左显示 */
        }

        .download-modal-text strong {
            font-weight: bold;
            color: #000000;
        }

        /* 移动端弹窗样式 */
        @media (max-width: 768px) {
            .download-modal {
                width: 90%;
                max-width: 400px;
            }
            
            .download-modal-content {
                padding: 30px 20px;
            }
            
            .download-modal-image {
                max-width: 50%;
                margin-bottom: 20px;
            }
            
            .download-modal-text {
                font-size: 0.8rem; /* 移动端更小 */
            }
        }

        /* 移动端全屏弹窗样式 */
        @media (max-width: 480px) {
            .download-modal {
                width: 95%;
                max-width: 350px;
            }
            
            .download-modal-content {
                padding: 25px 15px;
            }
            
            .download-modal-image {
                max-width: 60%;
                margin-bottom: 15px;
            }
            
            .download-modal-text {
                font-size: 0.75rem; /* 移动端更小 */
            }
        }

        /* Header & Navigation Styles */
        header {
            width: 100%;
            background-color: #fff;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
            position: fixed;
            top: 40px; /* 放在下载APP框架下方 */
            left: 0;
            z-index: 1000;
            transform: translateY(-100%);
            opacity: 0;
            transition: transform 0.8s ease, opacity 0.8s ease;
        }

        header.loaded {
            transform: translateY(0);
            opacity: 1;
        }

        /* 移动端header位置调整 */
        @media (max-width: 768px) {
            header {
                top: 0; /* 移动端header在顶部 */
            }
        }

        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 25px 5%;
            max-width: 1400px;
            margin: 0 auto;
            min-height: 80px;
        }

        .logo-container {
            flex: 0 0 16.6667%;
            display: flex;
            align-items: center;
            min-width: 150px;
            opacity: 0;
            transform: translateX(-30px);
            transition: opacity 0.8s ease 0.3s, transform 0.8s ease 0.3s;
        }

        header.loaded .logo-container {
            opacity: 1;
            transform: translateX(0);
        }

        .logo {
            max-width: 100%;
            height: auto;
            transition: transform 0.3s ease;
        }

        .logo:hover {
            transform: scale(1.05);
        }

        .desktop-nav {
            display: flex;
            align-items: center;
            opacity: 0;
            transform: translateX(30px);
            transition: opacity 0.8s ease 0.5s, transform 0.8s ease 0.5s;
        }

        header.loaded .desktop-nav {
            opacity: 1;
            transform: translateX(0);
        }

        .nav-links {
            display: flex;
            list-style: none;
        }

        .nav-links li {
            margin-left: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: #2c3e50;
            font-weight: normal;
            font-size: 16px;
            padding: 10px 0;
            position: relative;
            transition: color 0.3s ease;
        }

        .nav-links a:hover {
            color: #005eb8;
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: #2c3e50;
            cursor: pointer;
            padding: 10px;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            transition: background-color 0.3s ease;
            z-index: 1002;
            position: relative;
        }

        .mobile-menu-btn:hover {
            background-color: #f5f5f5;
        }

        .mobile-nav-menu {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: white;
            z-index: 2100;
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            text-align: center;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-nav-menu.active {
            display: flex;
            opacity: 1;
        }

        .mobile-nav-links {
            list-style: none;
            width: 100%;
            padding: 0 20px;
        }

        .mobile-nav-links li {
            width: 100%;
            margin-bottom: 15px;
        }

        .mobile-nav-links a {
            text-decoration: none;
            color: #2c3e50;
            font-weight: normal;
            font-size: 22px;
            display: block;
            padding: 18px 20px;
            transition: all 0.3s ease;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .mobile-nav-links a:hover {
            color: #005eb8;
            background-color: #f9f9f9;
        }

        .mobile-nav-links a i {
            margin-right: 10px;
            font-size: 0.9em;
        }

        /* 移动端下载按钮特殊样式 */
        #mobileDownloadBtn i {
            margin-right: 8px;
            font-size: 0.9em;
        }

        .mobile-menu-close {
            position: absolute;
            top: 30px;
            right: 20px;
            background: none;
            border: none;
            font-size: 28px;
            color: #2c3e50;
            cursor: pointer;
            padding: 10px;
            width: 50px;
            height: 50px;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            transition: background-color 0.3s ease;
            z-index: 2101;
        }

        .mobile-menu-close:hover {
            background-color: #f5f5f5;
        }

        .mobile-nav-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 2099;
            display: none;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-nav-overlay.active {
            display: block;
            opacity: 1;
        }

        /* Banner Slider Styles */
        .banner-container {
            margin-top: 0;
            position: relative;
            width: 100%;
            height: 75vh;
            min-height: 500px;
            max-height: 800px;
            overflow: hidden;
        }

        .banner-slider {
            position: relative;
            width: 100%;
            height: 100%;
        }

        .banner-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 1s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .banner-slide.active {
            opacity: 1;
        }

        .banner-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .banner-content {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            color: white;
            z-index: 10;
            width: 80%;
            max-width: 800px;
            opacity: 0;
            transform: translate(-50%, -50%) translateY(30px);
            transition: opacity 1s ease, transform 1s ease;
        }

        .banner-slide.active .banner-content {
            opacity: 1;
            transform: translate(-50%, -50%) translateY(0);
        }

        .banner-title {
            font-size: 2.8rem;
            font-weight: bold;
            margin-bottom: 20px;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
            animation: fadeInUp 1s ease 0.3s forwards;
            opacity: 0;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .banner-indicators {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            z-index: 10;
        }

        .indicator {
            width: 14px;
            height: 14px;
            background-color: rgba(255, 255, 255, 0.5);
            border-radius: 50%;
            margin: 0 10px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .indicator.active {
            background-color: white;
            transform: scale(1.2);
            border-color: rgba(255, 255, 255, 0.8);
        }

        .indicator:hover {
            background-color: rgba(255, 255, 255, 0.8);
            transform: scale(1.1);
        }

        /* Product Showcase Section */
        .products-section {
            width: 100%;
            background-color: #fff;
            padding: 40px 15px;
        }

        .products-container {
            display: flex;
            justify-content: space-between;
            max-width: 1600px;
            margin: 0 auto;
            gap: 15px;
        }

        .product-card {
            flex: 1;
            background-color: #f7f7f7;
            border-radius: 20px;
            padding: 30px 20px;
            text-align: center;
            color: #000000;
            position: relative;
            overflow: hidden;
            aspect-ratio: 1 / 1;
            min-height: 0;
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            align-items: center;
            padding-top: 50px;
            opacity: 0;
            transform: translateY(50px);
            transition: transform 0.6s ease, box-shadow 0.6s ease;
            cursor: pointer;
        }

        .product-card.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .product-card:nth-child(1) { transition-delay: 0.1s; }
        .product-card:nth-child(2) { transition-delay: 0.3s; }
        .product-card:nth-child(3) { transition-delay: 0.5s; }

        .product-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('images/p0.png');
            background-size: 60% auto;
            background-position: center 80%;
            background-repeat: no-repeat;
            z-index: 1;
            transition: opacity 0.8s ease;
        }

        .product-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            z-index: 1;
            transition: opacity 0.8s ease;
            border-radius: 20px;
        }

        #tango2000::after {
            background-image: url('images/p1.jpg');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
        }

        #tango4000::after {
            background-image: url('images/p2.jpg');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
        }

        #tango6000::after {
            background-image: url('images/p3.jpg');
            background-size: cover;
            background-position: center center;
            background-repeat: no-repeat;
        }

        .product-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            font-weight: bold;
            z-index: 3;
            position: relative;
            margin-top: 0;
            transition: all 0.6s ease;
            color: #000000;
        }

        .product-card p {
            font-size: 1.0rem;
            line-height: 1.5;
            z-index: 3;
            position: relative;
            margin-top: 0;
            transition: all 0.6s ease;
            color: #000000;
        }

        .product-card:hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }

        .product-card:hover h3 {
            color: white !important;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
        }

        .product-card:hover p {
            color: #f0f0f0 !important;
        }

        .product-card:hover::before {
            background-size: 60% auto;
            opacity: 0;
        }

        .product-card:hover::after {
            opacity: 1;
        }

        .product-card .overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: transparent;
            transition: background 0.8s ease;
            z-index: 2;
            border-radius: 20px;
        }

        .product-card:hover .overlay {
            background: linear-gradient(to bottom, 
                rgba(0, 0, 0, 0.6) 0%, 
                rgba(0, 0, 0, 0.4) 50%, 
                rgba(0, 0, 0, 0.2) 100%);
        }

        .product-card.mobile-center-hover {
            transform: translateY(-10px) scale(1.02);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }

        .product-card.mobile-center-hover h3 {
            color: white !important;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
        }

        .product-card.mobile-center-hover p {
            color: #f0f0f0 !important;
        }

        .product-card.mobile-center-hover::before {
            opacity: 0;
        }

        .product-card.mobile-center-hover::after {
            opacity: 1;
        }

        .product-card.mobile-center-hover .overlay {
            background: linear-gradient(to bottom, 
                rgba(0, 0, 0, 0.6) 0%, 
                rgba(0, 0, 0, 0.4) 50%, 
                rgba(0, 0, 0, 0.2) 100%);
        }

        /* 产品特点展示区域 */
        .features-section {
            width: 100%;
            background-color: #1c1c1c;
            padding: 60px 12%;
        }

        .features-grid {
            display: grid;
            grid-template-areas: 
                "A A A A A A"
                "B B B B B B"
                "C C C C C C"
                "D D D D D D";
            gap: 20px;
            max-width: 1800px;
            margin: 0 auto;
        }

        .area-a {
            grid-area: A;
            display: grid;
            grid-template-columns: 60% 40%;
            gap: 20px;
            min-height: 500px;
        }

        .area-b {
            grid-area: B;
            display: grid;
            grid-template-columns: 51% 49%;
            gap: 20px;
            min-height: 400px;
            width: 100%;
        }

        .area-c {
            grid-area: C;
            display: grid;
            grid-template-columns: 70% 30%;
            gap: 20px;
            min-height: 400px;
        }

        .area-d {
            grid-area: D;
            display: grid;
            grid-template-columns: 30% 70%;
            gap: 20px;
            min-height: 400px;
        }

        .a1 {
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            align-items: flex-start;
            background-color: #333;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
            transition: all 0.5s ease;
            cursor: pointer;
        }

        .a-right {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: 20px;
        }

        .a2, .a3, .b1, .b2, .c1, .c2, .d1, .d2 {
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            align-items: flex-start;
            background-color: #333;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
            transition: all 0.5s ease;
        }

        .feature-area {
            border-radius: 10px;
            padding: 40px;
            cursor: pointer;
            position: relative;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            opacity: 0;
            transform: translateY(30px);
            transition: transform 0.6s ease, box-shadow 0.6s ease, opacity 0.6s ease;
        }

        .feature-area.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .a1 { transition-delay: 0.1s; }
        .a2 { transition-delay: 0.2s; }
        .a3 { transition-delay: 0.3s; }
        .b1 { transition-delay: 0.4s; }
        .b2 { transition-delay: 0.5s; }
        .c1 { transition-delay: 0.6s; }
        .c2 { transition-delay: 0.7s; }
        .d1 { transition-delay: 0.8s; }
        .d2 { transition-delay: 0.9s; }

        .feature-title {
            position: relative;
            z-index: 3;
            text-align: left;
            padding-left: 20px;
            padding-top: 20px;
            color: white;
            text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.8);
            transition: all 0.5s ease;
        }

        .title-line1 {
            font-size: 2.5rem;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .a1 .title-line2 {
            font-size: 3.5rem;
            font-weight: bold;
        }

        .feature-area:not(.a1) .title-line2 {
            font-size: 2rem;
            font-weight: bold;
        }

        .feature-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.3);
            transition: background-color 0.5s ease;
            z-index: 1;
            border-radius: 10px;
        }

        .feature-area:hover {
            transform: scale(1.02);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
        }

        .feature-area:hover .feature-overlay {
            background-color: transparent;
        }

        .feature-area:hover .feature-title {
            text-shadow: 3px 3px 8px rgba(0, 0, 0, 1);
        }

        .feature-area:hover::before {
            transform: scale(1.1);
        }

        .feature-area::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            transition: transform 0.5s ease;
            z-index: 0;
            border-radius: 10px;
            opacity: 0;
        }

        .feature-area.bg-loaded::before {
            opacity: 1;
        }

        .feature-area:hover::before {
            transform: scale(1.1);
        }

        .a1::before { background-image: url('images/a1.jpg'); }
        .a2::before { background-image: url('images/a2.jpg'); }
        .a3::before { background-image: url('images/a3.jpg'); }
        .b1::before { background-image: url('images/b1.jpg'); }
        .b2::before { background-image: url('images/b2.jpg'); }
        .c1::before { background-image: url('images/c1.jpg'); }
        .c2::before { background-image: url('images/c2.jpg'); }
        .d1::before { background-image: url('images/d1.jpg'); }
        .d2::before { background-image: url('images/d2.jpg'); }

        .feature-area.mobile-center-hover {
            transform: scale(1.02);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
        }

        .feature-area.mobile-center-hover .feature-overlay {
            background-color: transparent;
        }

        .feature-area.mobile-center-hover .feature-title {
            text-shadow: 3px 3px 8px rgba(0, 0, 0, 1);
        }

        .feature-area.mobile-center-hover::before {
            transform: scale(1.1);
        }

        /* 图片切换框架样式 */
        .map-slider-section {
            width: 100%;
            background-color: #ffffff;
            padding: 0;
            position: relative;
            overflow: hidden;
        }

        .map-slider-container {
            max-width: 100%;
            margin: 0 auto;
            position: relative;
        }

        .map-slider {
            position: relative;
            width: 100%;
            height: 700px;
            overflow: hidden;
            border-radius: 0;
        }

        .map-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 0.8s ease;
        }

        .map-slide.active {
            opacity: 1;
        }

        .map-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .map-content {
            position: absolute;
            top: 15%;
            left: 50%;
            transform: translateX(-50%);
            text-align: center;
            color: white;
            z-index: 10;
            width: 80%;
            max-width: 1000px;
            opacity: 0;
            transform: translateX(-50%) translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .map-slide.active .map-content {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }

        .map-title {
            font-size: 3.5rem;
            font-weight: bold;
            margin-bottom: 25px;
            text-shadow: 3px 3px 12px rgba(0, 0, 0, 0.9);
            animation: fadeInUp 0.8s ease 0.3s forwards;
            opacity: 0;
        }

        .map-subtitle {
            font-size: 1.6rem;
            line-height: 1.7;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
            max-width: 900px;
            margin: 0 auto;
            animation: fadeInUp 0.8s ease 0.6s forwards;
            opacity: 0;
        }

        .map-indicators {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            z-index: 10;
        }

        .map-indicator {
            width: 16px;
            height: 16px;
            background-color: rgba(255, 255, 255, 0.6);
            border-radius: 50%;
            margin: 0 12px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .map-indicator.active {
            background-color: white;
            transform: scale(1.3);
            border-color: rgba(255, 255, 255, 0.9);
        }

        .map-indicator:hover {
            background-color: rgba(255, 255, 255, 0.9);
            transform: scale(1.2);
        }

        .map-slide::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to bottom, 
                rgba(0, 0, 0, 0.5) 0%, 
                rgba(0, 0, 0, 0.3) 20%, 
                rgba(0, 0, 0, 0.15) 40%,
                transparent 100%);
            z-index: 1;
        }

        /* Zone框架样式 */
        .zone-section {
            width: 100%;
            background-color: #ffffff;
            padding: 70px 12%;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .zone-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .zone-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .zone-title {
            text-align: center;
            margin-bottom: 30px;
        }

        .zone-main-title {
            font-size: 2.5rem;
            font-weight: bold;
            color: #000000;
            margin-bottom: 15px;
            line-height: 1.2;
        }

        .zone-subtitle {
            font-size: 1.2rem;
            color: #000000;
            line-height: 1.6;
            max-width: 1000px;
            margin: 0 auto;
        }

        .zone-video-container {
            width: 100%;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            position: relative;
            background-color: #000;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.3s, transform 0.8s ease 0.3s;
        }

        .zone-section.visible .zone-video-container {
            opacity: 1;
            transform: translateY(0);
        }

        .zone-video {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Navigation框架样式 */
        .navigation-section {
            width: 100%;
            background-color: #f4f4f4;
            padding: 70px 12%;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .navigation-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .navigation-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .navigation-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .navigation-title {
            text-align: center;
            margin-bottom: 30px;
            width: 100%;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
        }

        .navigation-section.visible .navigation-title {
            opacity: 1;
            transform: translateY(0);
        }

        .navigation-main-title {
            font-size: 2.5rem;
            font-weight: bold;
            color: #000000;
            margin-bottom: 15px;
            line-height: 1.2;
        }

        .navigation-subtitle {
            font-size: 1.2rem;
            color: #000000;
            line-height: 1.6;
            max-width: 1000px;
            margin: 0 auto;
        }

        .navigation-image-container {
            width: 100%;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.4s, transform 0.8s ease 0.4s;
        }

        .navigation-section.visible .navigation-image-container {
            opacity: 1;
            transform: translateY(0);
        }

        .navigation-image {
            width: 100%;
            height: auto;
            display: block;
        }

        /* Efficiency框架样式 */
        .efficiency-section {
            width: 100%;
            background-color: #ffffff;
            padding: 70px 12%;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .efficiency-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .efficiency-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .efficiency-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .efficiency-title {
            text-align: center;
            margin-bottom: 30px;
            width: 100%;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
        }

        .efficiency-section.visible .efficiency-title {
            opacity: 1;
            transform: translateY(0);
        }

        .efficiency-main-title {
            font-size: 2.5rem;
            font-weight: bold;
            color: #000000;
            margin-bottom: 15px;
            line-height: 1.2;
        }

        .efficiency-subtitle {
            font-size: 1.2rem;
            color: #000000;
            line-height: 1.6;
            max-width: 1000px;
            margin: 0 auto;
        }

        .efficiency-slider-container {
            width: 100%;
            position: relative;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.4s, transform 0.8s ease 0.4s;
        }

        .efficiency-section.visible .efficiency-slider-container {
            opacity: 1;
            transform: translateY(0);
        }

        .efficiency-slider {
            position: relative;
            width: 100%;
            height: 500px;
            overflow: hidden;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }

        .efficiency-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 0.8s ease;
        }

        .efficiency-slide.active {
            opacity: 1;
        }

        .efficiency-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .efficiency-indicators {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            z-index: 10;
        }

        .efficiency-indicator {
            width: 14px;
            height: 14px;
            background-color: rgba(255, 255, 255, 0.5);
            border-radius: 50%;
            margin: 0 10px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .efficiency-indicator.active {
            background-color: white;
            transform: scale(1.2);
            border-color: rgba(255, 255, 255, 0.8);
        }

        .efficiency-indicator:hover {
            background-color: rgba(255, 255, 255, 0.8);
            transform: scale(1.1);
        }

        /* Acre框架样式 */
        .acre-section {
            width: 100%;
            background-color: #ffffff;
            padding: 70px 0;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .acre-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .acre-container {
            max-width: 100%;
            margin: 0 auto;
        }

        .acre-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .acre-title {
            text-align: center;
            margin-bottom: 30px;
            width: 100%;
            padding: 0 12%;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
        }

        .acre-section.visible .acre-title {
            opacity: 1;
            transform: translateY(0);
        }

        .acre-main-title {
            font-size: 2.5rem;
            font-weight: bold;
            color: #000000;
            margin-bottom: 15px;
            line-height: 1.2;
        }

        .acre-subtitle {
            font-size: 1.2rem;
            color: #000000;
            line-height: 1.6;
            max-width: 1000px;
            margin: 0 auto;
        }

        .acre-slider-container {
            width: 100%;
            position: relative;
            height: 600px;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.4s, transform 0.8s ease 0.4s;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .acre-section.visible .acre-slider-container {
            opacity: 1;
            transform: translateY(0);
        }

        .acre-slider-images {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100%;
            height: 100%;
            position: relative;
            gap: 10px;
        }

        /* 新增：为两侧图片添加渐变覆盖层 */
        .acre-image-wrapper {
            position: relative;
            width: 20%;
            height: 80%;
            overflow: hidden;
        }

        .acre-image-wrapper::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to right, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.3));
            z-index: 1;
            pointer-events: none;
        }

        .acre-image-wrapper.right::before {
            background: linear-gradient(to left, rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.3));
        }

        .acre-left-image,
        .acre-center-image,
        .acre-right-image {
            object-fit: cover;
            border-radius: 0;
            transition: all 0.5s ease;
        }

        .acre-left-image,
        .acre-right-image {
            width: 100%;
            height: 100%;
            opacity: 0.7;
            z-index: 1;
        }

        .acre-center-image {
            width: 60%;
            height: 90%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            z-index: 2;
            position: relative;
        }

        /* 导航按钮 */
        .acre-nav-btn {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background-color: white;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            z-index: 10;
            transition: all 0.3s ease;
        }

        .acre-nav-btn:hover {
            transform: translateY(-50%) scale(1.1);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }

        .acre-nav-btn.prev {
            left: calc(20% - 22px);
        }

        .acre-nav-btn.next {
            right: calc(20% - 22px);
        }

        .acre-nav-btn i {
            color: #000000;
            font-size: 20px;
        }

        /* Applicability框架样式 */
        .applicability-section {
            width: 100%;
            background-color: #ffffff;
            padding: 60px 12%; /* 从70px改为60px，缩短与FAQs的距离 */
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .applicability-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .applicability-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .applicability-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .applicability-title {
            text-align: center;
            margin-bottom: 40px;
            width: 100%;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
        }

        .applicability-section.visible .applicability-title {
            opacity: 1;
            transform: translateY(0);
        }

        .applicability-main-title {
            font-size: 2.5rem;
            font-weight: bold;
            color: #000000;

            margin-bottom: 15px;
            line-height: 1.2;
        }

        .applicability-subtitle {
            font-size: 1.2rem;
            color: #000000;
            line-height: 1.6;
            max-width: 1000px;
            margin: 0 auto;
        }

        .applicability-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            grid-template-rows: repeat(2, auto);
            gap: 30px;
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
        }

        .applicability-area {
            background-color: #f9f9f9;
            border-radius: 0;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease, transform 0.8s ease, box-shadow 0.3s ease;
        }

        .applicability-area:nth-child(1) { transition-delay: 0.3s; }
        .applicability-area:nth-child(2) { transition-delay: 0.4s; }
        .applicability-area:nth-child(3) { transition-delay: 0.5s; }
        .applicability-area:nth-child(4) { transition-delay: 0.6s; }

        .applicability-section.visible .applicability-area {
            opacity: 1;
            transform: translateY(0);
        }

        .applicability-area:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
        }

        .applicability-image-container {
            width: 100%;
            height: 250px;
            overflow: hidden;
            border-radius: 15px 15px 0 0;
        }

        .applicability-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
            border-radius: 15px 15px 0 0;
        }

        .applicability-area:hover .applicability-image {
            transform: scale(1.05);
        }

        .applicability-text {
            padding: 25px;
        }

        .applicability-area-title {
            font-size: 1.4rem;
            font-weight: bold;
            color: #000000;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .applicability-area-subtitle {
            font-size: 1.0rem;
            color: #333333;
            line-height: 1.5;
        }

        /* 新增：FAQs框架样式 */
        .faqs-section {
            width: 100%;
            background-color: #ffffff;
            padding: 50px 12%; /* 从70px改为50px，缩短与Applicability框架的距离 */
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .faqs-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .faqs-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .faqs-content {
            display: flex;
            flex-direction: column;
            align-items: center;
            padding: 30px;
        }

        .faqs-title {
            text-align: center;
            margin-bottom: 30px;
            width: 100%;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
        }

        .faqs-section.visible .faqs-title {
            opacity: 1;
            transform: translateY(0);
        }

        .faqs-main-title {
            font-size: 2.5rem;
            font-weight: bold;
            color: #000000;
            line-height: 1.2;
        }

        .faqs-accordion {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.4s, transform 0.8s ease 0.4s;
            border: 1px solid #eaeaea;
            border-radius: 15px; /* 添加border-radius */
            padding: 20px;
            transition: border-color 0.3s ease;
        }

        .faqs-accordion:hover {
            border-color: #d3d3d3;
        }

        .faqs-section.visible .faqs-accordion {
            opacity: 1;
            transform: translateY(0);
        }

        .faq-item {
            margin-bottom: 15px;
            transition: all 0.3s ease;
        }

        .faq-question {
            padding: 20px 25px;
            background-color: #ffffff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s ease;
        }

        .faq-question:hover {
            background-color: #f9f9f9;
        }

        .faq-question-text {
            font-size: 1.2rem;
            color: #000000;
            display: flex;
            align-items: flex-start;
            font-weight: normal;
        }

        .faq-q {
            margin-right: 10px;
            color: #000000;
            font-weight: bold;
        }

        .faq-toggle {
            font-size: 1.5rem;
            color: #000000;
            transition: transform 0.3s ease;
            font-weight: normal;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 25px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease, padding 0.5s ease;
            background-color: #ffffff;
        }

        .faq-item.active .faq-answer {
            padding: 20px 25px;
            max-height: 1000px;
        }

        .faq-answer-text {
            font-size: 1.0rem;
            color: #636363;
            line-height: 1.6;
        }

        .faq-answer-text p {
            margin-bottom: 10px;
        }

        .faq-answer-text br {
            margin-bottom: 8px;
            display: block;
            content: "";
        }

        /* 新增：ABOUT框架样式 */
        .about-section {
            width: 100%;
            background-color: #000000;
            padding: 70px 12%;
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .about-section.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .about-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .about-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .about-title {
            text-align: center;
            margin-bottom: 40px;
            width: 100%;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.2s, transform 0.8s ease 0.2s;
        }

        .about-section.visible .about-title {
            opacity: 1;
            transform: translateY(0);
        }

        .about-main-title {
            font-size: 3.5rem;
            font-weight: bold;
            color: #ffffff;
            margin-bottom: 15px;
            line-height: 1.2;
            letter-spacing: 5px;
            text-transform: uppercase;
        }

        .about-main-title span {
            display: inline-block;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.3s ease 0.1s, transform 0.3s ease 0.1s;
        }

        .about-main-title span.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 修改ABOUT副标题字号 - 与Acre副标题保持一致 */
        .about-subtitle {
            font-size: 1.2rem; /* 从1.6rem改为1.2rem，与Acre副标题一致 */
            color: #cccccc;
            line-height: 1.6;
            max-width: 1000px;
            margin: 0 auto;
            font-style: normal;
        }

        .about-subtitle span {
            display: inline-block;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.3s ease 0.2s, transform 0.3s ease 0.2s;
        }

        .about-subtitle span.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .about-body {
            display: flex;
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            gap: 60px;
            align-items: center;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.8s ease 0.4s, transform 0.8s ease 0.4s;
        }

        .about-section.visible .about-body {
            opacity: 1;
            transform: translateY(0);
        }

        .about-text {
            flex: 0 0 55%;
            color: #ffffff;
        }

        .about-text p {
            font-size: 1.1rem;
            line-height: 1.8;
            margin-bottom: 20px;
            color: #cccccc;
        }

        .about-image-container {
            flex: 0 0 45%;
            height: 500px;
            overflow: hidden;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

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

        .about-image:hover {
            transform: scale(1.05);
        }

        /* 新增：返回顶部按钮样式 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px; /* 加大 */
            height: 50px; /* 加大 */
            background-color: #005eb8;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 999;
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.3s ease, transform 0.3s ease, font-weight 0.3s ease;
            font-size: 16px; /* 加大 */
            font-weight: normal;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .back-to-top.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .back-to-top:hover {
            background-color: #004a94;
            transform: scale(1.1);
        }

        .back-to-top:active {
            font-weight: bold;
        }

        /* Footer */
        .footer-section {
            width: 100%;
            background-color: #000000;
            color: white;
            text-align: center;
            padding: 30px 0;
            border-top: 1px solid #333333;
        }

        .footer-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 12%;
        }

        .footer-text {
            font-size: 1rem;
            color: #cccccc;
        }

        /* Responsive Styles */
        @media (max-width: 1024px) {
            .features-grid {
                gap: 15px;
            }
            
            .features-section {
                padding: 50px 8%;
            }
            
            .feature-area {
                padding: 30px;
            }
            
            .title-line1 {
                font-size: 2rem;
            }
            
            .a1 .title-line2 {
                font-size: 2.8rem;
            }
            
            .feature-area:not(.a1) .title-line2 {
                font-size: 1.8rem;
            }

            .logo-container {
                flex: 0 0 20%;
            }
            
            .nav-links li {
                margin-left: 25px;
            }
            
            .nav-links a {
                font-size: 15px;
            }
            
            .banner-title {
                font-size: 2.4rem;
            }
            
            .banner-container {
                height: 65vh;
            }
            
            .products-container {
                flex-direction: column;
                gap: 20px;
                max-width: 1400px;
            }
            
            .product-card {
                aspect-ratio: 1 / 1;
                max-width: 400px;
                margin: 0 auto;
                padding-top: 45px;
            }
            
            .product-card::before {
                background-size: 65% auto;
            }
            
            .product-card:hover::before {
                background-size: 65% auto;
            }
            
            .product-card h3 {
                font-size: 1.4rem;
            }
            
            .product-card p {
                font-size: 0.95rem;
            }

            .map-slider {
                height: 550px;
            }
            
            .map-title {
                font-size: 2.8rem;
            }
            
            .map-subtitle {
                font-size: 1.4rem;
                max-width: 800px;
            }

            .zone-section {
                padding: 50px 8%;
            }
            
            .zone-main-title {
                font-size: 2.2rem;
                margin-bottom: 12px;
            }
            
            .zone-subtitle {
                font-size: 1.1rem;
            }
            
            .zone-title {
                margin-bottom: 25px;
            }

            .navigation-section {
                padding: 50px 8%;
            }
            
            .navigation-main-title {
                font-size: 2.2rem;
                margin-bottom: 12px;
            }
            
            .navigation-subtitle {
                font-size: 1.1rem;
            }
            
            .navigation-title {
                margin-bottom: 25px;
            }

            .efficiency-section {
                padding: 50px 8%;
            }
            
            .efficiency-main-title {
                font-size: 2.2rem;
                margin-bottom: 12px;
            }
            
            .efficiency-subtitle {
                font-size: 1.1rem;
            }
            
            .efficiency-title {
                margin-bottom: 25px;
            }
            
            .efficiency-slider {
                height: 450px;
            }

            .acre-section {
                padding: 50px 0;
            }
            
            .acre-main-title {
                font-size: 2.2rem;
                margin-bottom: 12px;
            }
            
            .acre-subtitle {
                font-size: 1.1rem;
            }
            
            .acre-title {
                margin-bottom: 25px;
                padding: 0 8%;
            }
            
            .acre-slider-container {
                height: 500px;
            }
            
            .acre-center-image {
                width: 70%;
            }
            
            .acre-image-wrapper {
                width: 15%;
            }
            
            .acre-nav-btn.prev {
                left: calc(15% - 22px);
            }
            
            .acre-nav-btn.next {
                right: calc(15% - 22px);
            }

            /* 平板设备上的Applicability框架样式 */
            .applicability-section {
                padding: 50px 8%;
            }
            
            .applicability-main-title {
                font-size: 2.2rem;
                margin-bottom: 12px;
            }
            
            .applicability-subtitle {
                font-size: 1.1rem;
            }
            
            .applicability-title {
                margin-bottom: 30px;
            }
            
            .applicability-grid {
                gap: 25px;
            }
            
            .applicability-image-container {
                height: 220px;
                border-radius: 12px 12px 0 0;
            }
            
            .applicability-image {
                border-radius: 12px 12px 0 0;
            }
            
            .applicability-text {
                padding: 20px;
            }
            
            .applicability-area-title {
                font-size: 1.3rem;
            }
            
            .applicability-area-subtitle {
                font-size: 0.95rem;
            }
            
            /* ABOUT框架平板设备样式 */
            .about-section {
                padding: 50px 8%;
            }
            
            .about-main-title {
                font-size: 3rem;
                letter-spacing: 4px;
            }
            
            /* 平板设备ABOUT副标题字号调整 */
            .about-subtitle {
                font-size: 1.1rem; /* 与Acre副标题保持一致 */
            }
            
            .about-body {
                gap: 40px;
            }
            
            .about-image-container {
                height: 400px;
            }
            
            .about-text p {
                font-size: 1.0rem;
            }
            
            /* FAQs框架平板设备样式 */
            .faqs-section {
                padding: 50px 8%;
            }
            
            .faqs-main-title {
                font-size: 2.2rem;
            }
            
            .faq-question {
                padding: 18px 22px;
            }
            
            .faq-question-text {
                font-size: 1.1rem;
            }
            
            .faq-answer-text {
                font-size: 0.95rem;
            }
            
            .footer-container {
                padding: 0 8%;
            }
        }

        @media (max-width: 768px) {
            .features-section {
                padding: 40px 5%;
            }
            
            .features-grid {
                display: flex;
                flex-direction: column;
                gap: 15px;
            }
            
            .area-a {
                grid-template-columns: 1fr;
                min-height: auto;
                display: flex;
                flex-direction: column;
                gap: 15px;
            }
            
            .a1 {
                width: 100%;
                aspect-ratio: 2 / 1;
                min-height: auto;
                padding: 25px;
                order: 1;
            }
            
            .a-right {
                display: grid;
                grid-template-columns: 1fr 1fr;
                grid-template-rows: 1fr;
                gap: 15px;
                margin-top: 0;
                order: 2;
            }
            
            .a2, .a3 {
                aspect-ratio: 1 / 1;
                min-height: auto;
                padding: 25px;
            }
            
            /* 调整a2区域的标题字号 */
            .feature-area.a2 .title-line1 {
                font-size: 1.3rem; /* 从1.5rem缩小 */
            }
            
            .feature-area.a2 .title-line2 {
                font-size: 1.2rem; /* 从1.4rem缩小 */
            }
            
            .area-b {
                grid-template-columns: 1fr 1fr;
                min-height: auto;
                gap: 15px;
                order: 3;
                width: 100%;
            }
            
            .b1, .b2 {
                aspect-ratio: 1 / 1;
                min-height: auto;
                padding: 25px;
            }
            
            .area-c {
                grid-template-columns: 1fr 1fr;
                min-height: auto;
                gap: 15px;
                order: 4;
                width: 100%;
            }
            
            .c1, .c2 {
                aspect-ratio: 1 / 1;
                min-height: auto;
                padding: 25px;
            }
            
            .area-d {
                grid-template-columns: 1fr 1fr;
                min-height: auto;
                gap: 15px;
                order: 5;
                width: 100%;
            }
            
            .d1, .d2 {
                aspect-ratio: 1 / 1;
                min-height: auto;
                padding: 25px;
            }
            
            .area-b, .area-c, .area-d {
                min-height: auto;
            }
            
            .feature-area {
                min-height: auto;
                padding: 20px;
            }
            
            .title-line1 {
                font-size: 1.5rem;
            }
            
            .a1 .title-line2 {
                font-size: 2.0rem;
            }
            
            .feature-area:not(.a1) .title-line2 {
                font-size: 1.4rem;
            }

            .feature-area:hover {
                transform: scale(1);
                box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
            }
            
            .feature-area:hover .feature-overlay {
                background-color: rgba(0, 0, 0, 0.3);
            }
            
            .feature-area:hover .feature-title {
                text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.8);
            }
            
            .feature-area:hover::before {
                transform: scale(1);
            }

            .desktop-nav {
                display: none;
            }
            
            .mobile-menu-btn {
                display: flex;
            }
            
            .logo-container {
                flex: 0 0 30%;
            }
            
            .banner-title {
                font-size: 2.0rem;
            }
            
            .banner-container {
                height: 55vh;
                min-height: 400px;
            }
            
            .banner-content {
                width: 90%;
            }
            
            .products-section {
                padding: 35px 5%;
            }
            
            .products-container {
                gap: 25px;
            }
            
            .product-card {
                aspect-ratio: 1 / 1;
                padding: 25px 20px;
                padding-top: 40px;
                width: 95%;
                max-width: 95%;
                margin: 0 auto;
                transform: translateY(0);
                box-shadow: none;
            }
            
            .product-card::before {
                background-size: 70% auto;
            }
            
            .product-card:hover::before {
                background-size: 70% auto;
            }
            
            .product-card h3 {
                font-size: 1.4rem;
            }
            
            .product-card p {
                font-size: 1.0rem;
            }
            
            .product-card:hover {
                transform: translateY(0) scale(1);
                box-shadow: none;
            }
            
            .product-card:hover h3 {
                color: #000000 !important;
                text-shadow: none;
            }
            
            .product-card:hover p {
                color: #000000 !important;
            }
            
            .product-card:hover::before {
                opacity: 1;
            }
            
            .product-card:hover::after {
                opacity: 0;
            }
            
            .product-card:hover .overlay {
                background: transparent;
            }

            .map-slider {
                height: 450px;
            }
            
            .map-title {
                font-size: 2.2rem;
                margin-bottom: 20px;
            }
            
            .map-subtitle {
                font-size: 1.2rem;
                max-width: 90%;
            }
            
            .map-content {
                top: 12%;
                width: 90%;
            }
            
            .map-indicator {
                width: 14px;
                height: 14px;
                margin: 0 10px;
            }
            
            .map-indicators {
                bottom: 30px;
            }

            .zone-section {
                padding: 40px 5%;
            }
            
            .zone-main-title {
                font-size: 1.8rem;
                margin-bottom: 10px;
            }
            
            .zone-subtitle {
                font-size: 1.0rem;
            }
            
            .zone-video-container {
                border-radius: 15px;
            }
            
            .zone-title {
                margin-bottom: 20px;
            }

            .navigation-section {
                padding: 40px 5%;
            }
            
            .navigation-main-title {
                font-size: 1.8rem;
                margin-bottom: 10px;
            }
            
            .navigation-subtitle {
                font-size: 1.0rem;
            }
            
            .navigation-image-container {
                border-radius: 15px;
            }
            
            .navigation-title {
                margin-bottom: 20px;
            }

            .efficiency-section {
                padding: 40px 5%;
            }
            
            .efficiency-main-title {
                font-size: 1.8rem;
                margin-bottom: 10px;
            }
            
            .efficiency-subtitle {
                font-size: 1.0rem;
            }
            
            .efficiency-slider {
                height: 350px;
                border-radius: 15px;
            }
            
            .efficiency-title {
                margin-bottom: 20px;
            }

            /* 移动端Acre框架样式 */
            .acre-section {
                padding: 40px 0;
            }
            
            .acre-main-title {
                font-size: 1.8rem;
                margin-bottom: 10px;
            }
            
            .acre-subtitle {
                font-size: 1.0rem;
            }
            
            .acre-slider-container {
                height: 400px;
            }
            
            .acre-title {
                margin-bottom: 20px;
                padding: 0 5%;
            }
            
            /* 移动端隐藏两侧图片和渐变 */
            .acre-image-wrapper {
                display: none;
            }
            
            /* 移动端主图片占满宽度 */
            .acre-center-image {
                width: 98%;
                height: 85%;
            }
            
            /* 移动端按钮位置调整 - 浮动在主图片两侧居中 */
            .acre-nav-btn.prev {
                left: 10px;
                top: 50%;
            }
            
            .acre-nav-btn.next {
                right: 10px;
                top: 50%;
            }
            
            .acre-nav-btn {
                width: 40px;
                height: 40px;
            }
            
            .acre-nav-btn i {
                font-size: 18px;
            }
            
            .acre-slider-images {
                justify-content: center;
            }

            /* 移动端Applicability框架样式 */
            .applicability-section {
                padding: 40px 5%;
            }
            
            .applicability-main-title {
                font-size: 1.8rem;
                margin-bottom: 10px;
            }
            
            .applicability-subtitle {
                font-size: 1.0rem;
            }
            
            .applicability-title {
                margin-bottom: 25px;
                padding: 0 5%;
            }
            
            /* 移动端网格布局改为单列 */
            .applicability-grid {
                grid-template-columns: 1fr;
                grid-template-rows: repeat(4, auto);
                gap: 20px;
            }
            
            .applicability-image-container {
                height: 200px;
                border-radius: 12px 12px 0 0;
            }
            
            .applicability-image {
                border-radius: 12px 12px 0 0;
            }
            
            .applicability-text {
                padding: 20px;
            }
            
            .applicability-area-title {
                font-size: 1.3rem;
            }
            
            .applicability-area-subtitle {
                font-size: 0.95rem;
                line-height: 1.5;
            }
            
            /* 移动端ABOUT框架样式 */
            .about-section {
                padding: 40px 5%;
            }
            
            .about-main-title {
                font-size: 2.2rem;
                letter-spacing: 3px;
                margin-bottom: 10px;
            }
            
            /* 移动端ABOUT副标题字号调整 */
            .about-subtitle {
                font-size: 1.0rem; /* 与Acre副标题保持一致 */
            }
            
            .about-title {
                margin-bottom: 30px;
            }
            
            /* 移动端ABOUT布局改为垂直 */
            .about-body {
                flex-direction: column;
                gap: 30px;
            }
            
            .about-text {
                flex: 0 0 auto;
                width: 100%;
                order: 2;
            }
            
            .about-image-container {
                flex: 0 0 auto;
                width: 100%;
                height: 300px;
                order: 1;
            }
            
            .about-text p {
                font-size: 0.95rem;
                line-height: 1.6;
            }
            
            /* 移动端FAQs框架样式 - 两边留空再缩小 */
            .faqs-section {
                padding: 40px 2%; /* 从3%改为2% */
            }
            
            .faqs-main-title {
                font-size: 1.8rem;
            }
            
            .faqs-title {
                margin-bottom: 25px;
            }
            
            .faq-question {
                padding: 16px 20px;
            }
            
            .faq-question-text {
                font-size: 1.0rem;
            }
            
            .faq-answer-text {
                font-size: 0.9rem;
            }
            
            .faq-toggle {
                font-size: 1.3rem;
            }
            
            .footer-container {
                padding: 0 5%;
            }
        }

        @media (max-width: 480px) {
            .features-section {
                padding: 30px 4%;
            }
            
            .feature-area {
                padding: 15px;
            }
            
            .a1 {
                padding: 20px;
            }
            
            .a2, .a3, .b1, .b2, .c1, .c2, .d1, .d2 {
                padding: 15px;
            }
            
            .title-line1 {
                font-size: 1.2rem;
            }
            
            .a1 .title-line2 {
                font-size: 1.6rem;
            }
            
            .feature-area:not(.a1) .title-line2 {
                font-size: 1.1rem;
            }
            
            /* 进一步调整a2区域的标题字号 */
            .feature-area.a2 .title-line1 {
                font-size: 1.1rem;
            }
            
            .feature-area.a2 .title-line2 {
                font-size: 1.0rem;
            }

            .nav-container {
                padding: 20px 15px;
            }
            
            .logo-container {
                flex: 0 0 50%;
            }

            
            .mobile-nav-links a {
                font-size: 20px;
                padding: 16px 15px;
            }
            
            .mobile-menu-close {
                top: 20px;
                right: 15px;
            }
            
            .banner-title {
                font-size: 1.6rem;
            }
            
            .banner-container {
                height: 45vh;
                min-height: 350px;
            }
            
            .products-section {
                padding: 30px 5%;
            }
            
            .products-container {
                gap: 20px;
            }
            
            .product-card {
                aspect-ratio: 1 / 1;
                padding: 20px 15px;
                padding-top: 35px;
                width: 95%;
                max-width: 95%;
            }
            
            .product-card::before {
                background-size: 75% auto;
            }
            
            .product-card:hover::before {
                background-size: 75% auto;
            }
            
            .product-card h3 {
                font-size: 1.3rem;
            }
            
            .product-card p {
                font-size: 0.9rem;
                line-height: 1.5;
            }

            .map-slider {
                height: 400px;
            }
            
            .map-title {
                font-size: 1.8rem;
                margin-bottom: 15px;
            }
            
            .map-subtitle {
                font-size: 1.1rem;
                line-height: 1.5;
                max-width: 95%;
            }
            
            .map-content {
                top: 10%;
                width: 95%;
            }
            
            .map-indicator {
                width: 12px;
                height: 12px;
                margin: 0 8px;
            }
            
            .map-indicators {
                bottom: 25px;
            }

            .zone-section {
                padding: 30px 5%;
            }
            
            .zone-main-title {
                font-size: 1.5rem;
                margin-bottom: 8px;
            }
            
            .zone-subtitle {
                font-size: 0.9rem;
            }
            
            .zone-video-container {
                border-radius: 12px;
            }
            
            .zone-title {
                margin-bottom: 15px;
            }

            .navigation-section {
                padding: 30px 5%;
            }
            
            .navigation-main-title {
                font-size: 1.5rem;
                margin-bottom: 8px;
            }
            
            .navigation-subtitle {
                font-size: 0.9rem;
                line-height: 1.5;
            }
            
            .navigation-image-container {
                border-radius: 12px;
            }
            
            .navigation-title {
                margin-bottom: 15px;
            }

            .efficiency-section {
                padding: 30px 5%;
            }
            
            .efficiency-main-title {
                font-size: 1.5rem;
                margin-bottom: 8px;
            }
            
            .efficiency-subtitle {
                font-size: 0.9rem;
                line-height: 1.5;
            }
            
            .efficiency-slider {
                height: 300px;
                border-radius: 12px;
            }
            
            .efficiency-title {
                margin-bottom: 15px;
            }

            .acre-section {
                padding: 30px 0;
            }
            
            .acre-main-title {
                font-size: 1.5rem;
                margin-bottom: 8px;
            }
            
            .acre-subtitle {
                font-size: 0.9rem;
                line-height: 1.5;
            }
            
            .acre-slider-container {
                height: 300px;
            }
            
            .acre-center-image {
                width: 98%;
                height: 80%;
            }
            
            .acre-title {
                margin-bottom: 15px;
                padding: 0 5%;
            }

            /* 小屏幕移动端Applicability框架样式 */
            .applicability-section {
                padding: 30px 5%;
            }
            
            .applicability-main-title {
                font-size: 1.5rem;
                margin-bottom: 8px;
            }
            
            .applicability-subtitle {
                font-size: 0.9rem;
                line-height: 1.5;
            }
            
            .applicability-title {
                margin-bottom: 20px;
                padding: 0 5%;
            }
            
            .applicability-grid {
                gap: 15px;
            }
            
            .applicability-image-container {
                height: 180px;
                border-radius: 10px 10px 0 0;
            }
            
            .applicability-image {
                border-radius: 10px 10px 0 0;
            }
            
            .applicability-text {
                padding: 15px;
            }
            
            .applicability-area-title {
                font-size: 1.2rem;
                margin-bottom: 8px;
            }
            
            .applicability-area-subtitle {
                font-size: 0.85rem;
                line-height: 1.5;
            }
            
            /* 小屏幕移动端ABOUT框架样式 */
            .about-section {
                padding: 30px 5%;
            }
            
            .about-main-title {
                font-size: 1.8rem;
                letter-spacing: 2px;
                margin-bottom: 8px;
            }
            
            /* 小屏幕移动端ABOUT副标题字号调整 */
            .about-subtitle {
                font-size: 0.9rem; /* 与Acre副标题保持一致 */
                line-height: 1.5;
            }
            
            .about-title {
                margin-bottom: 20px;
            }
            
            .about-body {
                gap: 25px;
            }
            
            .about-image-container {
                height: 250px;
            }
            
            .about-text p {
                font-size: 0.85rem;
                line-height: 1.5;
            }
            
            /* 小屏幕移动端FAQs框架样式 - 两边留空再缩小 */
            .faqs-section {
                padding: 30px 2%; /* 从3%改为2% */
            }
            
            .faqs-main-title {
                font-size: 1.5rem;
            }
            
            .faqs-title {
                margin-bottom: 20px;
            }
            
            .faq-question {
                padding: 14px 18px;
            }
            
            .faq-question-text {
                font-size: 0.95rem;
            }
            
            .faq-answer-text {
                font-size: 0.9rem;
            }
            
            .faq-toggle {
                font-size: 1.2rem;
            }
            
            .footer-text {
                font-size: 0.9rem;
            }
        }