a {
  /* 1. 去除下划线 */
  text-decoration: none;
  
  /* 2. 重置颜色：继承父元素颜色，避免默认蓝色/紫色 */
  color: inherit;
  
  /* 3. 去除点击时的默认轮廓线（部分浏览器） */
  outline: none;
  
  /* 4. 确保鼠标指针样式（可选，若希望保持手型则保留 cursor: pointer） */
  /* cursor: default; */ 
}

/* 5. 关键：重置所有交互状态的默认表现 */
a:link,
a:visited,
a:hover,
a:active,
a:focus {
  text-decoration: none;
  color: inherit;
  outline: none;
  /* 去除 Webkit 内核浏览器点击高亮背景色 */
  -webkit-tap-highlight-color: transparent;
}
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", sans-serif;
        }
        :root {
            --primary-blue: #1677ff;
            --light-blue: #e6f4ff;
            --dark-blue: #0958b3;
            --text-gray: #333333;
            --text-light: #666666;
            --bg-white: #ffffff;
            --bg-light: #f0f8ff;
        }
        body {
            color: var(--text-gray);
            line-height: 1.6;
            font-size: 16px;
            scroll-behavior: smooth;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px 60px;
        }

        /* 顶部Hero区域 */
        .hero-banner {
            width: 100%;
            height: 480px;
            background: url('../../../images/price/down1/banner.jpg') center/cover no-repeat;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: white;
            padding: 0 20px;
            margin-top: 70px;
            position: relative;

        }
        .hero-banner .tag {
            background: rgba(127,181,202,0.5);
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 16px;
            margin-bottom: 20px;
            margin-top: 15px;
        }
        .hero-banner h1 {
            font-size: 50px;
            margin-bottom: 40px;
            font-weight: bold;
        }
        .hero-banner p {
            font-size: 16px;
            margin-bottom: 40px;
            opacity: 0.95;
        }
        .hero-buttons {
            display: flex;
            gap: 20px;
            margin-bottom: 40px;
        }
        .btn1 {
            padding: 12px 26px;
            border-radius: 24px;
            border: none;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.3s;
        }
        .btn-primary-1 {
            background: white;
            color: #07689b;
        }
        .btn-secondary {
            background: rgba(255,255,255,0.2);
            color: white;
            border: 1px solid white;
        }
        .btn1:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
        }

        .scroll-tip {
            font-size: 14px;
            opacity: 0.8;
            margin-top: 20px;
            position: absolute;
  bottom: 2rem;
  left: 50%;
            transform: translateX(-50%);
            animation: bounce 2s infinite;
        }
        @keyframes bounce {
      0%,100% { transform: translateX(-50%) translateY(0); }
      50% { transform: translateX(-50%) translateY(10px); }
    }

        /* 导航栏 */
        .nav-bar {
            width: 100%;
            background: #f2f2f2;
            border-bottom: 1px solid #eee;
            padding: 15px 0 10px 0;
            position: sticky; /* 关键：粘性定位 */
  top: 70px;           /* 距离视口顶部 0px 时固定 */
  z-index: 100; 

        }
        .content-section {
            scroll-margin-top: 120px; 
        }
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: center;
            gap: 40px;
        }
        .nav-item {
            font-size: 16px;
            color: var(--text-light);
            cursor: pointer;
            transition: color 0.3s;
            padding-bottom: 5px;
            margin-right: 15px;
            margin-left:15px;
            line-height: 26px;
        }
        .nav-item:hover{
             color: #0071bc;
            font-weight: bold;
            position: relative;
            text-align: center;
        }
        .nav-item.active {
            color: #0071bc;
            font-weight: bold;
            position: relative;
            text-align: center;
          
        }
        .nav-item.active::after{
            content:"";
            display: block;
            width: 40px;
            height:2px;
            background-color: #0071bc;
            margin:auto;
            margin-top: 3px;
        }
        .nav-item::after{
            content:"";
            display: block;
            width: 0px;
            height:2px;
            background-color: #0071bc;
            margin:auto;
            margin-top: 3px;
        }
        .nav-item:hover::after{
            content:"";
            display: block;
            width: 40px;
            height:2px;
            background-color: #0071bc;
            margin:auto;
            margin-top: 3px;
        }
        /* 通用标题 */
        .section-title {
            text-align: center;
            font-size: 20px;
            margin-bottom: 40px;
            color: var(--text-gray);
            font-weight: bold;
        }
        .section-title small {
            display: block;
            font-size: 16px;
            color: #476482;
            margin-top: 8px;
            font-weight: normal;
        }

        /* 产品概述模块 */
        .product-overview {
            background: white;
            padding: 40px 0;
            width: 1200px;
        }
        .overview-content {
            width: 1200px;
            display: flex;
            gap: 30px;
            align-items: flex-start;
            background-color: #f2f2f2;

        }
        .index-img{
            width: 435px;
            overflow: hidden;
        }
        .overview-img {
            width: 435px;
            border-radius: 8px;
            object-fit: cover;
            transition: transform 0.6s;

        }
        .overview-img:hover{
            transform: scale(1.05);
        }
        .overview-text h3 {
            font-size: 20px;
            color: #000;
            margin-top: 20px;
            margin-bottom: 12px;
            text-align: left;
            font-weight: bold;
        }
        .overview-text p {
            font-size: 16px;
            color: #476482;
            margin-top: 15px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            padding-right: 20px;
            text-align: left;
            line-height: 28px;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        .feature-card {
            background: var(--light-blue);
            padding: 24px;
            border-radius: 8px;
            text-align: center;
        }
        .feature-card .icon {
            width: 40px;
            height: 40px;
            background: var(--primary-blue);
            border-radius: 8px;
            margin: 0 auto 20px;
        }
        .feature-card h4 {
            font-size: 15px;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 13px;
            color: var(--text-light);
        }

        /* 痛点解决模块 */
        .pain-points {
            background: var(--bg-light);
            padding: 40px 0;
        }
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
            margin-top: 30px;
            position: relative;
        }
        .pain-card {
            border: 1px solid #eee;
            border-radius: 8px;
            padding: 20px;
            background: white;
            border-left: 4px solid #ff9800;
            text-align: left;
            transition: all 0.3s;
        }
         .pain-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0;
      width: 4px; height: 100%;
      background: #f7931e;
      transition: width 0.3s;
    }
    .pain-card:hover {
      transform: translateY(-6px);
      box-shadow: #f7931e;
    }
    .pain-card:hover::before {
      width: 100%;
      opacity: 0.03;
    }
        .pain-card h4 {
            font-size: 18px;
            margin-bottom: 12px;
            font-weight: bold;
        }
        .pain-card p {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 12px;
            height: 52px;
        }
        .pain-solution {
            background: #dcf2e9;
            padding: 15px;
            border-radius: 4px;
            color: #01996a;
            font-size: 14px;
            border-left:4px solid #01996a;
            padding-bottom: 20px;
            padding-top: 20px;
            line-height: 26px;
            height: 123px;
        }
        .pain-solution strong{
            color: #000;
            font-size: 18px;
            display: inline-block;
            margin-bottom:5px;
        }

        /* 为什么选择我们模块 */
        .num {
  width: auto;
  height: auto;
  margin: 0 auto;
    margin-bottom: 0px;
  position: relative;
  top: 0;
  z-index: 9;
  background-color: #f0f9ff;
  -webkit-box-shadow: 0px 0px 0px #d1d1d1;
  -moz-box-shadow: 0px 0px 0px #d1d1d1;
  box-shadow: 0px 0px 0px #d1d1d1;
  padding-left: 0px;
  padding-right: 0px;
  padding-top: 0px;
  margin-bottom: 0px;
}
        .why-us {
            background: white;
            padding: 40px 0;
            width: 1200px !important;
        }
        .why-intro {
            display: flex;
            gap: 30px;
            margin-bottom: 30px;
            background: #f5f5f5;
            padding: 20px;
            border-radius: 8px;
        }
        .why-intro p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
        }
        .why-img {
            width: 300px;
            border-radius: 8px;
        }
        .why-grid {
            display: grid;

             gap: 20px 40px;
            /*grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));*/
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            /*grid-template-columns: repeat(3, 1fr);*/
           
            margin-top: 30px;
            width: 1200px;
            box-sizing: border-box;
        }
        .why-card {
            background: #f0f9ff;
            padding: 18px;
            border-radius: 8px;
            text-align: center;
            /*width: 400px;*/
            border:1px solid #f0f9ff;
            min-width: 0; 
            transition: all 0.3s;
        }
        .why-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 30px rgba(2,132,199,0.12);
  border: 1px solid #0071bc;
}
        .why-card .num {
            font-size: 24px;
            color: #0071bc;
            font-weight: bold;
            margin-bottom: 0px;
        }
        .why-card h4 {
            font-size: 18px;
            margin-bottom: 8px;
            color: #000;
            font-weight: bold;
            margin-top: 0px;
        }
        .why-card p {
            font-size: 16px;
            color: #476482;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 设备清单表格 */
        .device-list {
            background: var(--bg-light);
            padding: 40px 0;
        }
        .device-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 30px;
            background: white;
            /*border-radius: 8px;*/
            overflow: hidden;
            border-color: #07689c;
        }
        .device-table th {
            background: linear-gradient(to right, #07689c, #068ab4);
            color: white;
            padding: 12px;
            text-align: center;
            font-size: 16px;
        }
        .device-table td {
            border: 1px solid #eee;
            padding: 10px;
            text-align: center;
            font-size: 14px;

        }
        .device-table tr:hover { background: #e0f2fe; }
        .tag-list {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            justify-content: left;
            margin-top: 20px;

        }
        .tag-item {
            background: #cffbfe;
            color: #0694ab;
            padding: 4px 10px;
            border-radius: 12px;
            font-size: 14px;
        }

        /* 工艺流程 */
        .process-flow {
            margin-top: 30px;
        }
        .flow-container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 30px;
        }
        .flow-step {
            background: #0071bc;
            color: white;
            padding: 16px 10px;
            border-radius: 4px;
            font-size: 13px;
            text-align: center;
            min-width: 90px;
            transition: all 0.3s;
        }
        .tech-flow-arrow {
          color: #0071bc;
          font-size: 20px;
          padding-top: 20px;
        }
        .line1{
            line-height: 21px;
        }
        .line2{
            line-height: 42px;
        }
        .flow-step:hover {
  transform: translateY(-6px);
  box-shadow:  0 8px 30px rgba(2,132,199,0.12);
  border-color: #0071bc;
}
        /* 案例展示 */
        .cases {
            background: white;
            padding: 40px 0;
        }
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 10px;
            margin-top: 30px;
        }
        .case-card {
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid #eee;
            
        }
        .index-img{
            overflow: hidden;
        }
        .case-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: all 0.3s;
        }
        .case-card img:hover {
 transform: scale(1.05);
/*  box-shadow:  0 8px 30px rgba(2,132,199,0.12);
  border-color: #0071bc;*/
}
        .case-card p {
            background: linear-gradient(to right, #07689b, #068cb5);;
            color: white;
            padding: 8px;
            text-align: center;
            font-size: 14px;
            margin-bottom:0px;
            /*border-radius: 0 0 8px 8px;*/
        }

        /* 底部footer */
        .footer-banner {
            width: 100%;
            height: 200px;
            background: url('../../../images/price/down1/banner2.jpg') center/cover no-repeat;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: white;
            padding: 0 20px;
        }
        .footer-banner h2 {
            font-size: 22px;
            margin-bottom: 15px;
            font-weight: bold;
        }
        .footer-banner p {
            font-size: 16px;
            opacity: 0.9;

        }