:root {
            --primary-color: #1a3a6d;
            --secondary-color: #2c5aa0;
            --accent-color: #f5a623;
            --light-gray: #f8f9fa;
            --text-color: #333;
        }

        body{
             background:var(--light-gray);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 50px;
        }
        
        
        .subtitle {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.2rem;
            font-weight: 300;
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 装饰元素 */
        .decoration {
            position: absolute;
            z-index: 1;
        }
        
        .decoration.circle {
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            top: -90px;
            right: -90px;
        }
        
        .decoration.square {
            width: 100px;
            height: 100px;
            bottom: -50px;
            left: 10%;
            transform: rotate(45deg);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        /* 选项卡样式 */
        .tabs-container {
            margin-bottom: 50px;
            max-width: 1200px;
            margin: 0 auto 50px;
            border: 0px solid #e0e6ed;
        }
        
        .tabs-header {
            display: flex;
            background-color: var(--light-gray);
            border-bottom: 0px solid #eaeaea;
            flex-wrap: wrap;
            gap:40px;
        }
        
        .tab-btn {
            flex: 1;
            min-width: 150px;
            padding: 30px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
            border: none;
            background: transparent;
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--primary-color);
            position: relative;
            outline: none;
            display: flex;
            align-items: center;
            justify-content: center;
            border:0px solid var(--secondary-color);
            border-radius: 10px;
            box-shadow: 5px 10px 19px 5px rgba(0, 0, 0, .2);
            
        }
        
        .tab-btn:hover {
            background-color: rgba(26, 58, 109, 0.05);
            color: var(--primary-color);
        }
        
        .tab-btn.active {
            color: white;
            background:var(--primary-color);
        }
        
        
        .tabs-content {
            padding: 50px 0px 30px 0;
        }
        
        .tab-pane {
            display: none;
            animation: fadeIn 0.4s ease;
        }
        
        .tab-pane.active {
            display: block;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        /* 业务联系人布局 */
        .contact-grid {
            display: grid;
            gap: 25px;
        }
        
        /* 对讲机业务布局 - 2行2列 */
        #walkie-talkie .contact-grid {
            grid-template-columns: repeat(2, 1fr);
            grid-template-rows: repeat(2, auto);
        }
        
        /* 无人机业务布局 - 1行2列 */
        #drone .contact-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        
        /* CAAC培训业务布局 - 1行2列 */
        #training .contact-grid {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .contact-card {
            background: linear-gradient(135deg, #f9fbfd 0%, #ffffff 100%);
            border: 0px solid #e0e6ed;
            border-radius: 12px;
            display: flex;
            align-items: center;
            transition: all 0.3s ease;
            box-shadow: 10px 0px 19px 0px rgba(0, 0, 0, .1);
            overflow: hidden;
        }
        
        .contact-card:hover {
            transform: translateY(-5px);
            border-color: var(--primary-color);
        }
        
        .contact-icon {
            background: linear-gradient(135deg, var(--light-gray) 0%, #eef2f7 100%);
            color: var(--primary-color);
            width: 122px;
            height: 122px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 20px;
            flex-shrink: 0;
            font-size: 1.4rem;
            transition: all 0.6s ease;
        }
        
        .contact-icon i{
            font-size: 2.4rem;
        }
        
        .contact-card:hover .contact-icon{
            background:var(--primary-color);
            color:white;
            transition: all 0.6s ease;
        }
        
        .contact-details {
            flex-grow: 1;
        }
        
        .contact-name {
            font-weight: 300;
            color: #000;
            margin-bottom: 8px;
            font-size: 1.3rem;
        }
        
        .contact-phone {
            color: #555;
            font-size: 1.3rem;
        }
        
        .contact-phone a {
            color: #333;
            text-decoration: none;
            transition: color 0.2s;
            display: inline-block;
            padding: 5px 0;
            font-weight: 300;
            font-family: impact;
            letter-spacing: 1pt;
        }
        
        .contact-phone a:hover {
            color: var(--primary-color);
        }
        
        /* 二维码区域样式 */
        .qrcode-section {
            background: linear-gradient(135deg, #ffffff 0%, #f9fbfd 100%);
            padding: 50px 0 40px;
            border-radius: 16px;
            margin: 60px auto;
            max-width: 1200px;
            border: 0px solid #e0e6ed;
        }
        
        .qrcode-header {
            text-align: center;
            margin-bottom: 40px;
        }
        
        .qrcode-header h2 {
            color: var(--primary-color);
            font-size: 1.9rem;
            position: relative;
            display: inline-block;
        }
        

        .qrcode-containers {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 30px;
        }
        
        .qrcode-item {
            text-align: center;
            padding: 25px 20px;
            background: white;
            border-radius: 16px;
            transition: transform 0.3s ease;
            border: 1px solid #e0e6ed;
        }
        
        .qrcode-item:hover {
            transform: translateY(-8px);
        }
        
        .qrcode-img {
            width: 170px;
            height: 170px;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            margin: 0 auto 20px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3.8rem;
            color: var(--primary-color);
            border: 1px solid #e0e6ed;
        }
        
        .qrcode-img img{
            width:100%;
            height:100%;
        }
        
        .qrcode-name {
            color: var(--primary-color);
            font-weight: 700;
            font-size: 1.25rem;
            margin-top: 15px;
            letter-spacing: 0.5px;
        }
        
        /* 页脚样式 */
        footer {
            background: linear-gradient(135deg, var(--primary-color) 0%, #0f2a53 100%);
            color: rgba(255, 255, 255, 0.85);
            text-align: center;
            padding: 40px 0;
            margin-top: 50px;
            font-size: 0.95rem;
        }
        
        /* 响应式调整 */
        @media (max-width: 992px) {
            .tabs-container {
                max-width: 800px;
            }
            
            .qrcode-container {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }
        
        @media (max-width: 768px) {
            h1 {
                font-size: 2.2rem;
            }
            
            .container{
                padding:50px 10px;
            }
            
            .tabs-header {
                gap:0px;
                flex-wrap: nowrap;
                background:white;
                overflow: hidden;
                border-radius: 10px;
            }
            
            .tab-btn {
                padding: 10px 0px;
                min-width:100px !important;
                min-height:100px;
                box-shadow: 10px 0px 19px 0px rgba(0, 0, 0, .0);
                border-radius: 0;
            }
            
            .tab-btn.active:after {
                width: 5px;
                height: 100%;
                bottom: 0;
                left: 0;
            }
            
            .tabs-content {
                padding: 25px;
            }
            
            /* 移动端布局调整 */
            #walkie-talkie .contact-grid,
            #drone .contact-grid,
            #training .contact-grid {
                grid-template-columns: 1fr;
            }
            
            .contact-card {
                padding: 20px;
            }
            
            .contact-icon {
                width: 55px;
                height: 55px;
                margin-right: 15px;
                font-size: 1.3rem;
            }
            
            .qrcode-container {
                grid-template-columns: repeat(2, 1fr);
                gap: 25px;
            }
            
            .qrcode-img {
                width: 150px;
                height: 150px;
                font-size: 3.2rem;
            }
        }
        
        @media (max-width: 576px) {
            h1 {
                font-size: 1.9rem;
            }
            
            .subtitle {
                font-size: 1rem;
            }
            
            .tabs-content {
                padding: 20px;
            }
            
            .qrcode-container {
                grid-template-columns: 1fr;
                max-width: 350px;
            }
            
            .qrcode-img {
                width: 170px;
                height: 170px;
            }
            
            .contact-card {
                flex-direction: column;
                text-align: center;
            }
            
            .contact-icon {
                margin-right: 0;
                margin-bottom: 15px;
            }
        }