* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
      
        body {
            font-family: 'Inter', sans-serif;
            background-color: #FEFBFE;
            color: #141414;
            line-height: 1.6;
            width: 100%;
            overflow-x: hidden;
        }
      
        a {
            text-decoration: none;
            color: inherit;
        }
        
        .h1{
            font-family: 'Inter', sans-serif;
            font-size: 60px;
        }
        .h2{
            font-family: 'Inter', sans-serif;
            font-size: 50px;
        }
        .sub{
            font-family: 'Inter', sans-serif;
            font-size: 25px;
        }
        
        .b1{
            font-family: 'Inter', sans-serif;
            font-size: 22px;
        }
        
        .b2{
            font-family: 'Inter', sans-serif;
            font-size: 16px;
        }
        
        .description{
            font-family: 'Inter', sans-serif;
            font-size: 14px;
        }
        
      
        /* 页面容器 - 固定宽度 */
        .page_container {
            font-family: 'Inter', sans-serif;
            max-width: 1728px;
            width: 100%;
            margin: 0 auto;
            position: relative;
        }
      
        /* 主导航容器 */
        .nav_main {
            width: 100%;
            height: 85px;
            background-color: #ffffff;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
      
        /* 导航内容容器 */
        .nav_content {
            width: 100%;
            height: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0 30px;
        }
      
        /* 企业标志区域 */
        .enterprise_area {
            display: flex;
            align-items: center;
            height: 100%;
        }
      
        .enterprise_logo {
            width: 125px;
            height: 33px;
            display: flex;
            align-items: center;
            cursor: pointer;
        }
      
        .enterprise_logo img {
            max-width: 100%;
            height: auto;
        }
      
        /* 导航菜单列表 */
        .nav_list {
            display: flex;
            align-items: center;
            height: 100%;
            list-style: none;
        }
      
        /* 导航项目 */
        .nav_item {
            position: relative;
            height: 100%;
            display: flex;
            align-items: center;
        }
      
        /* 导航链接 */
        .nav_link {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 51px;
            width: 120px;
            font-weight: 500;
            font-size: 15px;
            transition: all 0.3s ease;
            border-radius: 8px;
            margin: 0 5px;
        }
      
        /* 默认导航链接样式 */
        .nav_link.default {
            color: #475569;
        }
      
        /* 激活状态导航链接样式 */
        .nav_item.active .nav_link {
            background-color: #FBE5E8;
            color: #DD1F1F;
        }
      
        /* 悬停状态 - 粉色背景，黑色粗体 */
        .nav_link.default:hover {
            background-color: #FBE5E8;
            color: #000;
            font-weight: 700;
        }
      
        /* Contact按钮特殊样式 */
        .nav_contact .nav_link {
            background-color: #B2312A;
            color: white;
        }
      
        .nav_contact .nav_link:hover {
            background-color: #9a2a24;
        }
      
        /* 子导航样式 */
        .nav_sub {
            width: 100%;
            height: 45px;
            display: flex;
            align-items: center;
            background-color: #ffffff;
            padding: 0 30px;
            position: sticky;
            top: 85px;
            z-index: 999;
            border-top: 1px solid #e5e7eb;
            border-bottom: 1px solid #e5e7eb;
        }
      
        /* 面包屑导航 */
        .breadcrumb {
            display: flex;
            align-items: center;
            font-size: 14px;
            color: #64748b;
        }
      
        .breadcrumb a {
            color: #475569;
            transition: color 0.2s;
        }
      
        .breadcrumb a:hover {
            color: #3b82f6;
        }
      
        .breadcrumb_separator {
            margin: 0 10px;
            color: #cbd5e1;
        }
      
        .breadcrumb_current {
            color: #DD1F1F;
            font-weight: 500;
        }
      
        /* 语言选择器样式 */
        .nav_langchoose {
            position: relative;
            cursor: pointer;
            height: 100%;
            display: flex;
            align-items: center;
            margin-left: 10px;
        }
      
        .language_current {
            display: flex;
            align-items: center;
            padding: 8px 10px;
            color: #475569;
            font-weight: 500;
            height: 51px;
            width: 130px;
            border-radius: 8px;
            border: 1px solid #d1d5db;
            background-color: white;
            transition: all 0.2s;
            justify-content: space-between;
        }
      
        .language_content {
            display: flex;
            align-items: center;
            width: 110px;
        }
      
        .language_flag {
            width: 25px;
            height: 25px;
            margin-right: 10px;
            border-radius: 2px;
            overflow: hidden;
            object-fit: cover;
        }
      
        .language_text {
            width: 55px;
            font-size: 14px;
        }
      
        .language_arrow {
            width: 20px;
            text-align: center;
            font-size: 12px;
            transition: transform 0.3s;
        }
      
        .language_dropdown {
            position: absolute;
            top: 100%;
            right: 0;
            background-color: white;
            width: 130px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            border-radius: 8px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 1000;
            padding: 8px 0;
            border: 1px solid #d1d5db;
        }
      
        .nav_langchoose:hover .language_dropdown {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
      
        .nav_langchoose:hover .language_arrow {
            transform: rotate(180deg);
        }
      
        .language_option {
            display: flex;
            align-items: center;
            padding: 10px 15px;
            color: #475569;
            transition: background-color 0.2s;
            font-size: 14px;
        }
      
        .language_option:hover {
            background-color: #f8fafc;
        }
      
        .language_option .language_flag {
            margin-right: 10px;
        }

/* Tool Making 悬停层 */
.tool_making_popup {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: auto;
    min-width: 265px;
    max-width: 400px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    display: flex; /* 使用 flex 布局 */
    align-items: center; /* 垂直居中 */
    justify-content: center; /* 水平居中 */
    z-index: 1001;
    padding: 16px; /* 保持内边距 */
    margin-top: -5px;
    opacity: 0;
    transition: opacity 0.3s ease;
    /* 移除 display: none，使用 opacity: 0 和 JS 控制显示 */
}

/* 箭头指向菜单项 */
.tool_making_popup::before {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 10px solid white;
}

/* 黄色渐变立体按钮 */
.tool_making_button {
    width: 100%; /* 占满可用宽度 */
    height: 48px;
    background: linear-gradient(135deg, #FFD700, #FFA500);
    border: none;
    border-radius: 8px;
    color: #333;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 8px rgba(255, 165, 0, 0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    padding: 0 16px;
    white-space: nowrap;
    /* 移除 line-height: 1，让 flex 处理垂直居中 */
}

.tool_making_button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(255, 165, 0, 0.4);
}

.tool_making_button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(255, 165, 0, 0.3);
}


        /* 移动端菜单切换按钮 */
        .menu_toggle {
            display: none;
            color: #475569;
            font-size: 24px;
            cursor: pointer;
        }
        /* 移动端菜单关闭按钮 */
        .close_menu {
          display: none;
          position: absolute;
          top: 15px;
          right: 15px;
          font-size: 24px;
          cursor: pointer;
          color: #333;
          background: none;
          border: none;
          z-index: 1002;
        }
        /* 移动端遮罩层 */
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.5);
            z-index: 998;
        }