:root {
            --primary-color: #0088ff;
            --primary-light: #e6f2ff;
            --text-dark: #333333;
            --text-gray: #666666;
            --text-light: #999999;
            --bg-light: #f8fbff;
            --bg-dark: #222222;
            --container-width: 1200px;
            --border-radius: 12px;
        }
       
        .limitW{
            max-width: 1920px;
            margin: 0 auto;
        }
         
       .container {
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

       .my_head .container::before,.my_head .container::after{
            display: none;
       }

        .section-title-wrap {
            text-align: left;
            margin-bottom: 40px;
        }

        .section-subtitle {
            color: var(--primary-color);
            font-size: 14px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 32px;
            font-weight: bold;
            margin-top: 5px;
            color: var(--text-dark);
        }
        .section-title b{
            color: #0088ff;
        }

        .btn-primary {
            display: inline-block;
            background-color: var(--primary-color);
            color: #fff;
            padding: 10px 24px;
            border-radius: 20px;
            font-size: 14px;
            transition: background 0.3s;
            cursor: pointer;
            border: none;
        }

        .btn-primary:hover {
            background-color: #0066cc;
        }
        .navbar-nav>li>a.active{
            color:#0066cc ;
        }

        /* ================= 顶部导航 ================= */
        header {
            position: sticky;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            padding: 10px 0;
            background: transparent;
            transition: all 0.2s linear;
            background-color: #fff;
            box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
        }
        header.index{
            position: fixed;
        }

        header.fix{
            background: transparent;
            box-shadow: none;
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            position: relative;
        }

        .logo {
            font-size: 24px;
            font-weight: bold;
            color: var(--primary-color);
            display: flex;
            align-items: center;
            gap: 10px;
            z-index: 1001;
        }
     
        .navbar-nav{
            display: flex;
             gap: 30px;
        }

        .navbar-nav a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            transition: color 0.3s;
        }
        .navbar-nav > li {
            position: relative;
        }
        .navbar-nav > li > ul {
            z-index: 9999;
            padding: 0;
            position: absolute;
            width: 100px;
            left: 0%;
            background-color: #fff;
            -webkit-box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
                    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);
            height: 0;
            overflow: hidden;
        }
        .navbar-nav > li > ul > li {
            list-style: none;
            text-align: center;
            line-height: 40px;
        }
        .navbar-nav > li > ul > li > a {
             font-size: 14px;
        }
        .navbar-nav > li > ul.active {
              height: auto;
        }


        .navbar-nav ul{
            display: none;
        }

        .navbar-nav ul.active{
            display: block;
        }

        .navbar-nav a .glyphicon-menu-down{
            font-size: 12px;
            margin-left: 5px;
            display: inline-block;
        }

        .navbar-nav > li .glyphicon-menu-down.active {
            -webkit-transform: rotate(180deg);
                -ms-transform: rotate(180deg);
                    transform: rotate(180deg);
        }

        .navbar-nav a:hover{
            color: var(--primary-color);
        }

        .mobile-menu-btn {
            display: none;
            font-size: 28px;
            cursor: pointer;
            z-index: 1001;
            color: var(--text-dark);
            user-select: none;
        }


        footer {
            background: var(--bg-dark);
            color: #fff;
            max-width: 1920px;
            margin: 0 auto;
        }
        .footer-copyright img{
            display: inline-block;
        }

        .footer-top {
            /* background: linear-gradient(90deg, #0066cc 0%, #0088ff 100%); */
            padding: 60px 0;
            background: url(../img/hxsy_jrwm.png) no-repeat center center;
            background-size: 100% 100%;           
        }

        .footer-top-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .contact-info {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .contact-qr img {
            width: 120px;
            height: 120px;
            /* border-radius: 8px; */
        }

        .contact-details h3 {
            font-size: 24px;
            margin-bottom: 20px;
        }

        .contact-details p {
            font-size: 14px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .contact-details p img{
            width: 14px;
        }

        .join-us {
            max-width: 400px;
        }

        .join-us h3 {
            font-size: 24px;
            margin-bottom: 15px;
        }

        .join-us p {
            font-size: 14px;
            margin-bottom: 20px;
            opacity: 0.9;
            line-height: 1.8;
        }

        .join-us .btn-primary {
            background: #fff;
            color: var(--primary-color);
        }

        .footer-bottom {
            padding: 40px 0;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a {
            color: #ccc;
            font-size: 14px;
        }

        .footer-company-info {
            color: #999;
            font-size: 13px;
            line-height: 1.8;
        }
        
        .footer-company-info strong {
            color: #fff;
            font-size: 16px;
            display: block;
            margin-bottom: 10px;
        }

        .footer-qrs {
            display: flex;
            gap: 20px;
        }

        .footer-qr-item {
            text-align: center;
            font-size: 12px;
            color: #999;
        }

        .footer-qr-item img {
            width: 80px;
            height: 80px;
            background: #fff;
            padding: 5px;
            border-radius: 8px;
            margin-bottom: 5px;
        }

        .footer-copyright {
            text-align: center;
            padding: 20px 0;
            color: #666;
            font-size: 12px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }
        .glyphicon-menu-down:before{
            display: none;
        }
        .navbar-nav>li>a{
           padding: 0 10px;
        }

         /* Hero 首屏区域 */
        .hero {
            padding: 20px 0;
            overflow: hidden;
            background: url(../img/hyzx_banner.png) no-repeat center center;
        }

        .hero-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

        .hero-text {
            flex: 1;
        }

        .hero-text h1 {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            color: #111;
        }

        .hero-text p {
            font-size: 18px;
            color: var(--text-gray);
            max-width: 500px;
        }

         @media (max-width: 768px) {
            .navbar-nav{
                margin: 0;
            }
           .navbar-nav>li>a{
            padding: 10px;
            }
            .hero{
                padding-top: 40px;
                background-size: auto 100%;
            }
            .intro{
                padding: 0;
            }
            .solutions{
                padding: 40px 0;
            }
            .mobile-menu-btn { display: block; }

            .nav-links{
                position: absolute;              
                top: 54px;               
                left: 0;             
                width: 100%;                
                background: #fff;             
                box-shadow: 0 10px 20px rgba(0,0,0,0.1);             
                padding: 10px 0;               
                gap: 0;         
                opacity: 0;                                
                visibility: hidden;                               
                transform: translateY(-10px);                              
                transition: all 0.3s ease;                               
                border-radius: 0 0 12px 12px;
            }
            .nav-links .navbar-nav{
                display: flex;
                flex-direction: column;
                gap: 0;
            }

            .navbar-nav > li > ul{
                width: 100%;
            }
            header.fix{background-color: #fff;}
            .nav-links.active { opacity: 1; visibility: visible; transform: translateY(0); }
            .nav-links li{border-bottom: 1px solid #f0f0f0;}
            .nav-links a { padding: 15px 20px; width: 100%; text-align: center;  display: block;}
            .nav-links li:last-child { border-bottom: none; }
            .hero-text h1 { font-size: 36px; }
            .intro-inner { grid-template-columns: 1fr; }
            .solutions-grid { grid-template-columns: 1fr;display: block; }
            .solutions-grid .mid{display: none;}
            .solution-card{right: initial;left: initial;}
            .platforms-grid { grid-template-columns: 1fr; }
            .insight-grid { grid-template-columns: 1fr; }
            .contact-info { flex-direction: column; text-align: center; }
            .footer-bottom-inner { flex-direction: column; gap: 30px; align-items: center; text-align: center; }
            .footer-links { flex-direction: row; gap: 20px; }
            .video-modal-close { top: 10px; right: 10px; background: rgba(0,0,0,0.5); width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; z-index: 10; }
            .footer-top{background-size: auto 100%;}
            /* .contact-qr{display: none;} */
            .contact-details p:nth-child(4){
                display: none;
            }
            
        }