/* 第一屏：全屏背景大图 + 标题 */
        .hero-fullscreen4 {
            position: relative;
            min-height: 50vh;
            background-image: url('../images/about.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
       
.card-bottom-img {
    margin-top: auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgb(0 0 0 / 10%);
}
.card-bottom-img img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}
        /* 各区块背景色交替（层次感） */
        .bg-white {
            background-color: #ffffff;
        }
        .bg-light {
            background-color: #f8fafd;
        }
        .bg-soft-blue {
            background-color: #f0f4f9;
        }
        .section-padding {
            padding: 80px 5%;
        }
        .section-padding-sm {
            padding: 60px 5%;
        }

        /* 通用容器宽度 */
        .container-wide {
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }

        /* 介绍区块图文 */
        .intro-section {
            display: flex;
            flex-wrap: wrap;
            gap: 50px;
            align-items: center;
        }
        .intro-text {
            flex: 1.2;
        }
        .intro-text h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #1e6df2;
            margin-bottom: 1.5rem;
        }
        .intro-text p {
            font-size: 1.05rem;
            line-height: 1.6;
            color: #2c3e50;
            margin-bottom: 1rem;
        }
        .intro-image {
            flex: 0.9;
            border-radius: 28px;
            overflow: hidden;
            box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1);
        }
        .intro-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.3s;
        }
        .intro-image img:hover {
            transform: scale(1.02);
        }

        /* 使命与愿景双卡片 */
        .mission-vision {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .mv-card {
            background: #ffffff;
            border-radius: 28px;
            padding: 2rem 2rem;
            text-align: center;
            border: 1px solid #e9edf2;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.02);
            transition: all 0.3s;
        }
        .mv-card:hover {
            transform: translateY(-5px);
            border-color: #1e6df2;
        }
        .mv-icon {
            font-size: 3rem;
            color: #1e6df2;
            margin-bottom: 1.2rem;
        }
        .mv-card h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #1f2a3e;
        }
        .mv-card p {
            color: #5a6e85;
            line-height: 1.5;
            font-size: 1rem;
        }

        /* 核心价值卡片 */
        .values-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 2rem;
        }
        .value-card {
            background: #ffffff;
            border-radius: 24px;
            padding: 2rem 1.5rem;
            text-align: center;
            border: 1px solid #e9edf2;
            transition: all 0.3s;
        }
        .value-card:hover {
            transform: translateY(-6px);
            border-color: #1e6df2;
            box-shadow: 0 15px 25px -10px rgba(0, 0, 0, 0.05);
        }
        .value-icon {
            font-size: 2.5rem;
            color: #1e6df2;
            margin-bottom: 1rem;
        }
        .value-card h4 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: #1f2a3e;
        }
        .value-card p {
            color: #5a6e85;
            font-size: 0.95rem;
            line-height: 1.5;
        }

        /* What We Are Best At 卡片 */
        .bestat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 2rem;
        }
        .bestat-card {
            background: #ffffff;
            border-radius: 24px;
            padding: 2rem 1.5rem;
            text-align: center;
            border: 1px solid #e9edf2;
            transition: all 0.3s;
        }
        .bestat-card:hover {
            transform: translateY(-6px);
            border-color: #1e6df2;
            box-shadow: 0 15px 25px -10px rgba(0, 0, 0, 0.05);
        }
        .bestat-icon {
            font-size: 2.5rem;
            color: #1e6df2;
            margin-bottom: 1rem;
        }
        .bestat-card h4 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: #1f2a3e;
        }
        .bestat-card p {
            color: #5a6e85;
            font-size: 1rem;
            line-height: 1.5;
            font-weight: 500;
        }

        /* 时间线 */
        .timeline-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
        }
        .milestone {
            flex: 1;
            min-width: 180px;
            background: #ffffff;
            border-radius: 24px;
            padding: 1.8rem 1.2rem;
            text-align: center;
            border: 1px solid #e9edf2;
        }
        .milestone-year {
            font-size: 2rem;
            font-weight: 800;
            color: #1e6df2;
            margin-bottom: 0.5rem;
        }
        .milestone-desc {
            font-weight: 500;
            color: #2c3e50;
        }

        .btn-custom {
            background-color: #1e6df2;
            border: none;
            padding: 12px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 40px;
            color: white;
            transition: all 0.3s;
            display: inline-block;
            text-decoration: none;
            box-shadow: 0 2px 8px rgba(30, 109, 242, 0.2);
        }
        .btn-custom:hover {
            background-color: #0a58ca;
            transform: translateY(-2px);
            color: white;
        }

        .section-title {
            text-align: center;
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 2.5rem;
            color: #1f2a3e;
        }


 .hero-fullscreen3 {
            position: relative;
            min-height: 75vh;
            background-image: url('../images/yi.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: brightness(0.85);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            color: white;
            padding: 2rem;
        }
      

        /* 第二屏：客户Logo区域 */
        .clients-section {
            padding: 80px 5%;
            text-align: center;
            background: #ffffff;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 2rem;
            color: #1f2a3e;
        }
        .logo-grid {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 3rem;
            max-width: 1200px;
            margin: 0 auto;
        }
        .client-logo {
            flex: 0 0 150px;
    
     
            transition: all 0.2s;
        }
        .client-logo img {
            width: 100%;
            height: auto;
            filter: grayscale(0.2);
            opacity: 0.8;
            transition: 0.2s;
        }
        .client-logo:hover img {
            filter: grayscale(0);
            opacity: 1;
            transform: scale(1.05);
        }

        /* 第三屏：应用行业 左右切换布局 */
        .industries-section {
            padding: 80px 5%;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
        .industries-wrapper {
            display: flex;
            flex-wrap: wrap;
            gap: 3rem;
        }
        .industries-nav {
            flex: 0 0 300px;
            background: #ffffff;
      
            padding: 1.5rem 0;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
            border: 1px solid #e9edf2;
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .industry-tab {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1rem 1.5rem;
            cursor: pointer;
            transition: all 0.2s ease;
            border-left: 3px solid transparent;
            color: #2c3e50;
        }
        .industry-tab i {
            font-size: 1.5rem;
            width: 32px;
            color: #1e6df2;
        }
        .industry-tab span {
            font-size: 1rem;
            font-weight: 500;
        }
        .industry-tab:hover {
            background: #eef2ff;
            transform: translateX(4px);
        }
        .industry-tab.active {
            background: #eef2ff;
            border-left-color: #1e6df2;
            color: #1e6df2;
            font-weight: 600;
        }
        .industries-display {
            flex: 1;
            background: #ffffff;
       
            overflow: hidden;
            border: 1px solid #e9edf2;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
        }
        .industry-image {
            width: 100%;
            height: auto;
            display: block;
        }
        .industry-image img {
            width: 100%;
            height: auto;
            display: block;
        }
		
		
		  /* 第一屏：全屏背景大图 + 标题 */
        .hero-fullscreen {
            position: relative;
            min-height: 35vh;
            background-image: url('../images/cp2.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: brightness(0.85);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            color: white;
            padding: 2rem;
        }
        .hero-content h1 {
            font-size: 4.5rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            text-shadow: 0 4px 20px rgba(0,0,0,0.3);
        }
		
  

        /* 第二屏：一行三列卡片布局 */
        .cards-section {
            padding: 80px 5%;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
    
        .service-card {
            background: #ffffff;
          
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.02);
            border: 1px solid #e9edf2;
        }
        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 30px -12px rgba(0, 0, 0, 0.1);
            border-color: #1e6df2;
        }
        .card-img {
            height: 220px;
            overflow: hidden;
        }
        .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }
        .service-card:hover .card-img img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 1.8rem;
        }
        .card-body h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #1e6df2;
        }
        .card-body p {
            color: #2c3e50;
            line-height: 1.5;
            font-size: 1rem;
        }
        .card-body strong {
            color: #1f2a3e;
        }

        /* 第三屏：图片画廊 */
        .gallery-section {
            padding: 60px 5% 80px;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
        .gallery-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 2rem;
            color: #1f2a3e;
        }
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .gallery-item {
            cursor: pointer;
      
            overflow: hidden;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 4px 12px rgba(0,0,0,0.05);
        }
        .gallery-item:hover {
            transform: scale(1.02);
            box-shadow: 0 15px 25px -8px rgba(0,0,0,0.1);
        }
        .gallery-item img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }

        /* Lightbox 全屏特效 */
        .lightbox {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.92);
            z-index: 2000;
            justify-content: center;
            align-items: center;
            cursor: pointer;
        }
        .lightbox img {
            max-width: 90%;
            max-height: 90%;
            object-fit: contain;
            border-radius: 12px;
            box-shadow: 0 0 30px rgba(0,0,0,0.5);
        }
        .lightbox .close-lightbox {
            position: absolute;
            top: 25px;
            right: 35px;
            color: white;
            font-size: 40px;
            font-weight: bold;
            cursor: pointer;
            transition: 0.2s;
        }
        .lightbox .close-lightbox:hover {
            color: #1e6df2;
        }
		
		  /* 第一屏：背景图但高度适中，不全屏 */
        .hero-banner {
            position: relative;
            min-height: 75vh;   /* 降低高度，能看到第二屏 */
            background-image: url('../images/cp1.jpg');
            background-size: cover;
            background-position: center 30%;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        
     
        .capabilities-list {
            background: rgba(255,255,255,0.12);
            backdrop-filter: blur(8px);
            border-radius: 40px;
            padding: 2rem 2rem;
            display: inline-block;
            width: 100%;
            text-align: left;
        }
        .capabilities-list p {
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
            font-weight: 500;
        }
        .capabilities-list ul {
            list-style: none;
            padding-left: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin-top: 1rem;
        }
        .capabilities-list li {
            background: rgba(30, 109, 242, 0.8);
            padding: 0.3rem 1rem;
            border-radius: 40px;
            font-size: 0.9rem;
            font-weight: 500;
        }

        /* 第二屏左右布局 - 左侧导航更大气 */
        .services-section {
            padding: 80px 5%;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
        .split-layout {
            display: flex;
            gap: 3rem;
            flex-wrap: wrap;
        }
        .services-nav {
            flex: 0 0 300px;
            background: #ffffff;
     
            padding: 2rem 0;
            box-shadow: 0 12px 30px rgba(0,0,0,0.05);
            border: 1px solid #e9edf2;
            align-self: start;
            position: sticky;
            top: 100px;
        }
        .service-tab {
            padding: 1.2rem 1.8rem;
            font-size: 1.3rem;
            font-weight: 700;
            color: #2c3e50;
            cursor: pointer;
            transition: all 0.25s ease;
            border-left: 4px solid transparent;
            letter-spacing: -0.2px;
        }
        .service-tab:hover {
            background: #eef2ff;
            color: #1e6df2;
            transform: translateX(4px);
        }
        .service-tab.active {
            background: #eef2ff;
            color: #1e6df2;
            border-left-color: #1e6df2;
            font-weight: 800;
        }
        .services-content {
            flex: 1;
        }
        .service-detail {
            background: #ffffff;
        
            padding: 2rem;
            border: 1px solid #e9edf2;
            margin-bottom: 2rem;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
        }
        .service-detail h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: #1e6df2;
            margin-bottom: 1.5rem;
        }
        .service-detail p {
            color: #2c3e50;
            line-height: 1.6;
            margin-bottom: 1rem;
            font-size: 1rem;
        }
        .service-detail strong {
            color: #1f2a3e;
        }
        /* 图片网格 */
        .image-gallery {
            margin-top: 2rem;
        }
        .gallery-title {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #1f2a3e;
        }
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1rem;
        }
        .gallery-item {
            cursor: pointer;

            overflow: hidden;
            transition: transform 0.2s, box-shadow 0.2s;
            box-shadow: 0 4px 10px rgba(0,0,0,0.05);
        }
        .gallery-item:hover {
            transform: scale(1.02);
            box-shadow: 0 12px 20px rgba(0,0,0,0.1);
        }
        .gallery-item img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
		
		 /* 第一屏：全屏背景大图 + 标题 */
        .hero-fullscreen2 {
            position: relative;
            min-height: 35vh;
            background-image: url('../images/lx.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
     
    

        /* 第二屏：联系方式三列卡片 + 全宽表单 */
        .contact-section {
            padding: 80px 5%;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
        .contact-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-bottom: 3rem;
        }
        .contact-card {
            background: #ffffff;
            border-radius: 28px;
            padding: 2rem 1.5rem;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid #e9edf2;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
        }
        .contact-card:hover {
            transform: translateY(-6px);
            border-color: #1e6df2;
            box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1);
        }
        .card-icon {
            width: 70px;
            height: 70px;
            background: #eef2ff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.2rem;
            font-size: 2rem;
            color: #1e6df2;
            transition: 0.2s;
        }
        .contact-card:hover .card-icon {
            background: #1e6df2;
            color: white;
        }
        .contact-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .contact-card p, .contact-card a {
            color: #5a6e85;
            text-decoration: none;
            font-size: 1rem;
        }
        .contact-card a:hover {
            color: #1e6df2;
        }

        /* 全宽表单 - 一行二列布局 */
        .full-width-form {
            background: #ffffff;
            border-radius: 32px;
            padding: 2rem;
            border: 1px solid #e9edf2;
            box-shadow: 0 8px 20px rgba(0,0,0,0.02);
        }
        .full-width-form h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #1e6df2;
            margin-bottom: 0.5rem;
        }
        .full-width-form p {
            color: #5a6e85;
            margin-bottom: 1.5rem;
        }
        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-bottom: 1.2rem;
        }
        .form-group {
            margin-bottom: 0;
        }
        .form-group label {
            font-weight: 500;
            margin-bottom: 0.3rem;
            display: block;
            color: #1f2a3e;
        }
        .form-control {
            border-radius: 20px;
            border: 1px solid #e2e8f0;
            padding: 0.6rem 1rem;
            background: #fcfdfe;
            width: 100%;
        }
        .form-control:focus {
            border-color: #1e6df2;
            box-shadow: 0 0 0 3px rgba(30,109,242,0.1);
        }
        .full-width {
            grid-column: span 2;
        }
        .checkbox-features {
            display: flex;
            gap: 1.5rem;
            margin: 1rem 0 1.5rem;
            flex-wrap: wrap;
        }
        .checkbox-features span {
            color: #2c3e50;
            font-size: 0.9rem;
        }
        .checkbox-features i {
            color: #1e6df2;
            margin-right: 6px;
        }
        .btn-submit {
            background: #1e6df2;
            border: none;
            padding: 12px 28px;
            border-radius: 40px;
            font-weight: 600;
            color: white;
            width: 100%;
            transition: 0.2s;
        }
        .btn-submit:hover {
            background: #0a58ca;
            transform: translateY(-2px);
        }

        /* 第三屏：数据安全 + 全球运输 */
        .trust-section {
            padding: 60px 5% 80px;
            max-width: 1200px;
            margin: 0 auto;
            width: 100%;
        }
        .trust-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
        }
        .trust-card {
            background: #ffffff;
            border-radius: 32px;
            padding: 2rem;
            border: 1px solid #e9edf2;
            text-align: center;
            transition: 0.2s;
        }
        .trust-card:hover {
            transform: translateY(-4px);
            border-color: #1e6df2;
        }
        .trust-icon {
            font-size: 3rem;
            color: #1e6df2;
            margin-bottom: 1rem;
        }
        .trust-card h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        .trust-card p {
            color: #5a6e85;
            margin-bottom: 1rem;
        }
        .shipping-icons {
            display: flex;
            justify-content: center;
            gap: 2rem;
            margin: 1rem 0;
            flex-wrap: wrap;
        }
        .shipping-item {
            text-align: center;
            font-size: 1.8rem;
            color: #1e6df2;
            background: #eef2ff;
            width: 80px;
            height: 80px;
            border-radius: 40px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            transition: 0.2s;
        }
        .shipping-item span {
            font-size: 0.75rem;
            margin-top: 6px;
            font-weight: 500;
            color: #1f2a3e;
        }
        .shipping-item:hover {
            transform: translateY(-5px);
            background: #1e6df2;
            color: white;
        }
        .shipping-item:hover span {
            color: white;
        }
        .incoterm {
            background: #eef2ff;
            display: inline-block;
            padding: 0.2rem 1rem;
            border-radius: 40px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 0.8rem;
        }
 /* 优势头部 */
        .advantages-header {
            text-align: center;
            margin-bottom: 60px;
        }
        .advantages-header h1 {
            font-size: 3.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #1e2a3a, #1e6df2);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
        }
        .advantages-header p {
            font-size: 1.2rem;
            color: #4a5b6e;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 卡片网格布局 - 白色卡片 + 浅灰背景 */
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 2rem;
        }
        .advantage-card {
            background: #ffffff;
            border-radius: 28px;
            padding: 2rem 1.8rem;
            transition: all 0.3s ease;
            border: 1px solid #e9edf2;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.02);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .advantage-card:hover {
            transform: translateY(-6px);
            border-color: #1e6df2;
            box-shadow: 0 20px 30px -12px rgba(0, 0, 0, 0.08);
        }
        .card-icon {
            font-size: 2.4rem;
            color: #1e6df2;
            margin-bottom: 1.2rem;
        }
        .advantage-card h3 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #1f2a3e;
        }
        .advantage-card p {
            color: #5a6e85;
            line-height: 1.5;
            font-size: 1rem;
            margin-bottom: 0;
        }

        /* 自定义按钮 */
        .btn-custom {
            background-color: #1e6df2;
            border: none;
            padding: 12px 32px;
            font-size: 1rem;
            font-weight: 600;
            border-radius: 40px;
            color: white;
            transition: all 0.3s;
            display: inline-block;
            text-decoration: none;
            box-shadow: 0 2px 8px rgba(30, 109, 242, 0.2);
        }
        .btn-custom:hover {
            background-color: #0a58ca;
            transform: translateY(-2px);
            color: white;
        }
		  /* 主体内容区域 */
        .main-content {
            flex: 1;
            padding: 60px 5% 80px;
            max-width: 1400px;
            margin: 0 auto;
            width: 100%;
        }
		
		   /* 第一屏：全屏背景大图 + 标题 */
        .hero-fullscreen {
            position: relative;
            min-height: 75vh;
            background-image: url('../images/z.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
      

        /* 第二屏：左右图文 */
        .split-section {
            padding: 80px 5%;
            max-width: 1300px;
            margin: 0 auto;
            width: 100%;
        }
        .split-layout {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 50px;
        }
        .split-text {
            flex: 1.2;
        }
        .split-text p {
            font-size: 1.05rem;
            line-height: 1.6;
            color: #2c3e50;
            margin-bottom: 1rem;
        }
        .split-image {
            flex: 0.9;
            border-radius: 28px;
            overflow: hidden;
            box-shadow: 0 20px 30px -12px rgba(0,0,0,0.1);
        }
        .split-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.3s;
        }
        .split-image img:hover {
            transform: scale(1.02);
        }

        /* 第三屏：带有背景图片的卡片区域 (毛玻璃效果) */
        .cards-section {
            position: relative;
            padding: 80px 5%;
           
        }
   
        .cards-section .container-cards {
            position: relative;
            z-index: 2;
            max-width: 1400px;
            margin: 0 auto;
        }
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
        }
        .quality-card {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(8px);
            border-radius: 28px;
            padding: 2rem 1.8rem;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid rgba(255, 255, 255, 0.3);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }
        .quality-card:hover {
            transform: translateY(-8px);
            background: rgba(255, 255, 255, 0.98);
            border-color: #1e6df2;
            box-shadow: 0 20px 30px -12px rgba(0, 0, 0, 0.2);
        }
        .card-icon {
            font-size: 3rem;
            color: #1e6df2;
            margin-bottom: 1.2rem;
        }
        .quality-card h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: #1f2a3e;
        }
        .quality-card p {
            color: #2c3e50;
            line-height: 1.5;
            font-size: 0.95rem;
        }

        /* 第四屏：全屏背景图 + 文字 */
        .philosophy-fullscreen {
            position: relative;
            min-height: 45vh;
            background-image: url('../images/99.jpg');
            background-size: cover;
            background-position: center;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        .philosophy-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: brightness(0.85);
            z-index: 1;
        }
        .philosophy-content {
            position: relative;
            z-index: 2;
            color: white;
            max-width: 900px;
            padding: 2rem;
        }
        .philosophy-content h2 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
        }
        .philosophy-content p {
            font-size: 1.2rem;
            line-height: 1.6;
            font-weight: 500;
        }
		      @media (max-width: 768px) {
			 .hero-content h1 {font-size:2rem}
			 .hero-fullscreen{min-height:35vh}
			 .cards-grid {
    grid-template-columns: 1fr;
}
.form-row,.trust-grid{ grid-template-columns: 1fr;}
			}