@charset "utf-8";
/* CSS Document */
* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", sans-serif;
            font-size: 16px;
        }
        body {
            background:url(/images/mouser-diy/bg.jpg) no-repeat #02071d;
            color: #ffffff;
            line-height: 26px;
        }
        /* 全局居中容器，最大宽度1200px */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部头部Banner区域 */
        .login-box{
            position: absolute;
            top: 10px;  
            width: 100%;
            text-align: right;color: #fff;
        }
        .login-box a{color: #fff;text-decoration: none;margin-right: 8px;}
        .login-box a:hover{color: #fff;text-decoration: underline;}
        .header-banner {
            width: 100%;
            padding: 30px 0 50px;
            background:url(/images/mouser-diy/banner-bg.png) no-repeat top center;   
            position: relative;
        }
        .header-top-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 30px;
        }
        .logo-m {
           
        }
        
        .banner-tag {
           
        }
        .banner-main-title {           
           margin-top: 20px;
            margin-bottom: 40px;
        }
        .banner-desc-text {
            font-size: 15px;
            opacity: 0.9;
        }
        .banner-desc-text .p1{font-size: 22px;}
        /* 课程标题栏 */
        .course-title-bar {
            margin: 0px 0 40px;
            text-align: center;
        }
        .course-title-inner {
                    
            font-size: 20px;
            font-weight: bold;
            background: url(/images/mouser-diy/title-bg.png)no-repeat center;
            height: 70px;line-height: 68px;
            font-size: 32px;
        }

        /* 课程介绍图文模块 */
        .course-intro-block {
            background-color: #1d39b3;            
            border-radius: 20px;
            padding: 35px;
            display: flex;
            gap: 25px;
            align-items: flex-start;
            margin-bottom: 50px;
        }
        .intro-text-area {
            flex: 1;
            font-size: 14px;
            
        }
        .intro-text-area p{
        margin-bottom: 15px;
        }
        .intro-video-box {
            width: 43%;
            min-width: 320px;
            border-radius: 8px;
            overflow: hidden;
        }
        .intro-video-box img {
            width: 100%;
            height: auto;
            display: block;
        }

        /* 相关产品板块 */
        .product-section-title {
            text-align: center;
            font-size: 26px;
            font-weight: bold;
            margin-bottom: 30px;
        }
        .product-wrap {
            background-color: #ffffff;
            border-radius: 10px;
            padding: 30px;
            color: #081438;
            margin-bottom: 30px;
        }
        .bottom-p{margin: 0 15px 10px;text-align: center;}
        .product-item {
            display: flex;
            gap: 20px;
            margin-bottom: 30px;
            align-items: flex-start;
        }
        .product-item:last-child {
            margin-bottom: 0;
        }
        .product-img-box {
            width:240px;
            flex-shrink: 0;
        }
        .product-img-box img {
            width: 100%;
            height: auto;
            display: block;
            box-shadow: 0 0 6px rgba(0, 74, 133, 0.3);
             transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
        .product-img-box img:hover{box-shadow: 0 4px 10px rgba(0, 74, 133, 0.3);
    transform: translateY(-3px);}
        .product-info-area {
            flex: 1;
        }
        .product-name-tag{
           
           margin-bottom: 10px;
           margin-top: 6px;
        }
        .product-name-tag span{
            background-color: #004a85;
            color: #fff;
            padding: 4px 12px;
            font-size: 20px;            
            display: inline-block;
            margin-right: 5px;
            
        }
        .product-name-tag a{font-size: 22px;color: #222;text-decoration: none;}
        .product-name-tag a:hover{color: #004a85;}
        .product-desc-text {
          font-size: 15px;   
          color: #666;
          line-height: 22px;
        }

        /* 工程师介绍板块 */
        .engineer-section-title {
            text-align: center;
            font-size: 32px;
            font-weight: bold;
            margin-bottom: 30px;
        }
        .engineer-card {
            background-color: rgba(30, 70, 160, 0.45);
            border: 1px solid #40a0ff;
            border-radius: 10px;
            padding: 25px;
            display: flex;
            gap: 25px;
            align-items: center;
        }
        .engineer-left-info {
            width: 280px;
            flex-shrink: 0;
        }
        .engineer-name {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 8px;
        }
        .engineer-name span{font-size: 30px;font-weight: bold;}
        .engineer-job {            
            opacity: 1;
        }
        .engineer-intro-text {
            flex: 1;
        }

        /* 底部页脚 */
        .footer-text {
            text-align: center;
            padding: 20px 0 20px;           
            opacity: 0.7;
            background: #02124f;
            margin-top: 60px;
        }

        /* 响应式适配规则 */
        @media (max-width: 992px) {
            .course-intro-block, .engineer-card {
                flex-direction: column;
            }
            .intro-video-box, .engineer-left-info {
                width: 100%;
                max-width: 400px;
                margin: 0 auto;
            }
            .banner-main-title {
                font-size: 32px;
            }
        }
        @media (max-width: 768px) {
            *{font-size: 15px;line-height: 24px;}
            .product-item {
                flex-direction: column;
            }
            .product-img-box {
                width: 100%;
                max-width: 220px;
                margin: 0 auto;
            }
            .banner-main-title {
                font-size: 26px;
                margin-bottom: 20px;
            }
            .header-banner{padding-bottom: 30px;background: none;}
            .course-intro-block{margin-bottom: 30px;}
            .banner-tag img{width: 100%;}
            .banner-main-title img{width: 100%;}
            .banner-desc-text .p1{font-size: 20px;}
            .course-title-bar{margin-bottom: 20px;}
            .course-title-inner{background: none; font-size: 28px;line-height: 36px;height: auto;}
            .course-intro-block , .product-wrap{padding: 20px;}
            .product-name-tag{font-size: 20px;}
            .engineer-card{gap: 15px;}
        }