input.input_focus{
    border: 1px solid red !important;
    box-shadow: 0 0 20px rgba(0, 0, 0, .1);
}
.app_h{height: 90px;}
.shadow05{box-shadow: 0 0 20px 0 rgba(0, 0, 0, .05);}
.imgblock{display: block;}
.w100{width: 100%;display: block;}
.flex{display: flex;}
.flex-jcsb{justify-content: space-between;}
.flex-end{justify-content: flex-end;}
.jc-right{justify-content: flex-end;}
.jc-center{justify-content: center;}
.ai-center{align-items: center;}
.f-left{float: left;}
.f-right{float: right;}
.fz-16{font-size: var(--fz16);}
.c-5b5b5b{color: #5b5b5b;}
.h_fff:hover{
    color: #fff !important;
}
.bg_f3f5f9{
    background-color: #f3f5f9;
}
.wline1 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
    overflow: hidden;
}
.wline2 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
}
.wline3 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
    overflow: hidden;
}
.wline4 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
    overflow: hidden;
}
.wline6 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 6;
    overflow: hidden;
}
.wline7 {
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 7;
    overflow: hidden;
}
.flex-wrap{flex-wrap: wrap;}
.mtop8{margin-top: 8%;}
.none{display: none;}
.img_cover,.CoverImg{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.fixed{position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}
.fixed_f{position: fixed !important;
}
.flex1{
    flex: 1;
}
.dw_relative {
  position: relative;
  overflow: hidden;
}
.error-msg {
  position: absolute;
  bottom: 5px;
  right: 20px;
  display: block;
  font-size: 11px;
  color: red !important;
} 
.radius4{
	border-radius: 4px;
	-webkit-border-radius: 4px;
	-moz-border-radius: 4px;
	-ms-border-radius: 4px;
	-o-border-radius: 4px;
	overflow: hidden;
}
.radius20{
	border-radius: 20px;
	-webkit-border-radius: 20px;
	-moz-border-radius: 20px;
	-ms-border-radius: 20px;
	-o-border-radius: 20px;
	overflow: hidden;
}
.radius10{
	border-radius: 10px;
	-webkit-border-radius: 10px;
	-moz-border-radius: 10px;
	-ms-border-radius: 10px;
	-o-border-radius: 10px;
	overflow: hidden;
}
.GDtime05{
    transition: all .5s;
    -webkit-transition: all .5s;
    -moz-transition: all .5s;
    -ms-transition: all .5s;
    -o-transition: all .5s;
}
.GDtime1{
    transition: all 1s;
    -webkit-transition: all 1s;
    -moz-transition: all 1s;
    -ms-transition: all 1s;
    -o-transition: all 1s;
}
a{
    transition: all .4s;
    -webkit-transition: all .4s;
    -moz-transition: all .4s;
    -ms-transition: all .4s;
    -o-transition: all .4s;
}

.absoImg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    min-height: 100%;
}
.CoverImg{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.block{display: block;}
.alert {
    position: fixed;
    padding: 15px 20px;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    z-index: 100000;
    color: #fff;
    text-align: center;
    /* line-height: .6rem; */
    font-size: 16px;
    display: none;
    border-radius: 10px;
    background-color: rgba(0, 0, 0, .5);
    -webkit-box-shadow: inset 0 1px 1px rgb(0 0 0 / 8%), 0 0 8px rgb(102 175 233 / 60%);
    box-shadow: inset 0 1px 1px rgb(0 0 0 / 8%), 0 0 8px rgb(102 175 233 / 60%);
    z-index: 3000;
}
        /* 基础重置与变量定义 */
        :root {
            --main: #ff7b00;      /* 强调橙 - 按钮/高亮 */

            --primary-blue: #1a5fb4;       /* 科技蓝 - 主色 */
            --dark-gray: #333333;          /* 深灰 - 辅助色 */
            --accent-orange: #ff7b00;      /* 强调橙 - 按钮/高亮 */
            --light-gray: #f5f5f5;         /* 浅灰背景 */
            --medium-gray: #666666;        /* 中灰文本 */
            --border-gray: #e0e0e0;        /* 边框灰 */
            --white: #ffffff;              /* 白色背景 */
            --text-dark: #222222;          /* 正文深色 */
            --text-light: #777777;         /* 正文浅色 */
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.12);
            --radius: 4px;
            --transition: all 0.3s ease;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 15px 35px rgba(26, 95, 180, 0.15);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
            line-height: 1.6;
            color: var(--text-dark);
            background-color: var(--white);
        }
        
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        
        ul {
            list-style: none;
        }
        
        img {
            max-width: 100%;
            /* height: auto; */
            display: block;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 28px;
            background-color: var(--accent-orange);
            color: white;
            border: none;
            border-radius: var(--radius);
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }
        .btn2{
            padding: 6px 24px;
        }
        .btn:hover {
            background-color: #e56c00;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        
        .btn-secondary {
            background-color: var(--primary-blue);
        }
        
        .btn-secondary:hover {
            background-color: #0f4d9c;
        }
        
        .btn-outline {
            background-color: transparent;
            border: 2px solid var(--primary-blue);
            color: var(--primary-blue);
        }
        
        .btn-outline:hover {
            background-color: var(--primary-blue);
            color: white;
        }
        
        .section-title {
            font-size: 2rem;
            margin-bottom: 1.5rem;
            color: var(--dark-gray);
            position: relative;
            padding-bottom: 10px;
            text-align: center;
        }
        
        .section-title:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background-color: var(
            --accent-orange);
        }
        
        .section-title-left{
            text-align: left;
        }
        .section-title-left::after{
            left: 0%;
            transform: translateX(0%);

        }
        .section-subtitle {
            font-size: 1.1rem;
            color: var(--medium-gray);
            margin-bottom: 2.5rem;
            /* max-width: 700px; */
            text-align: center;
        }
        
        /* 面包屑导航 */
        .breadcrumb {
            background-color: var(--light-gray);
            padding: 15px 0;
            font-size: 0.9rem;
        }
        
        .breadcrumb-content {
            display: flex;
            align-items: center;
        }
        
        .breadcrumb a {
            color: var(--medium-gray);
        }
        
        .breadcrumb a:hover {
            color: var(--primary-blue);
        }
        
        .breadcrumb-separator {
            margin: 0 8px;
            color: #aaa;
        }
        
        .breadcrumb-current {
            color: var(--primary-blue);
            font-weight: 600;
        }
        
        /* 顶部导航栏 */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
            z-index: 1000;
            /* padding: 15px 0; */
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary-blue);
        }
        .logo img{
            height: 60px;
        }
        .logo-icon {
            color: var(--accent-orange);
            margin-right: 8px;
            font-size: 1.8rem;
        }
        
        .nav-desktop {
            display: flex;
        }
        
        .nav-desktop ul {
            display: flex;
        }
        
        .nav-desktop li {
            margin-left: 30px;
        }
        
        .nav-desktop a {
            color: var(--dark-gray);
            font-weight: 500;
            position: relative;
            padding: 5px 0;
        }
        
        .nav-desktop a:hover {
            color: var(--primary-blue);
        }
        
        .nav-desktop a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-blue);
            transition: width 0.3s ease;
        }
        
        .nav-desktop a:hover:after {
            width: 100%;
        }
        
        .contact-btn {
            background-color: var(--accent-orange);
            color: white;
            padding: 8px 20px;
            border-radius: var(--radius);
            margin-left: 20px;
        }
        
        .contact-btn:hover {
            background-color: #e56c00;
        }
        
        .contact-btn:after {
            display: none;
        }
        
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--dark-gray);
            cursor: pointer;
        }
        
        /* 移动端导航 */
        .nav-mobile {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            width: 100%;
            background-color: var(--white);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            z-index: 999;
            padding: 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease;
        }
        
        .nav-mobile.active {
            display: block;
            max-height: 500px;
        }
        
        .nav-mobile ul li {
            margin-bottom: 15px;
        }
        
        .nav-mobile a {
            display: block;
            padding: 12px 0;
            border-bottom: 1px solid #f0f0f0;
            font-weight: 500;
        }
        
        .nav-mobile .contact-btn {
            background-color: var(--accent-orange);
            color: white;
            padding: 12px 20px;
            border-radius: var(--radius);
            text-align: center;
            margin-top: 10px;
        }
        
        /* 首页核心内容区 */
        .hero {
            padding-top: 120px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #f8fafc 0%, #e8f2fe 100%);
        }
        .hero .container{
            padding-top: 70px;
        }
        .custom-pagination {
  text-align: center;
  margin-top: 20px;
      text-align: center;
    margin-top: 20px;
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
}

.custom-bullet {
  display: inline-block;
  padding: 5px 15px;
  margin: 0 5px;
  background: #f0f0f0;
  color: #666;
  border-radius: 20px;
  cursor: pointer;
  font-size: 14px;
  /* transition: all 0.3s; */
}

.custom-bullet:hover {
  background: #007bff;
  color: #fff;
}

.custom-bullet.active {
  background: #007bff;
  color: #fff;
}
        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        
        .hero-text h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--dark-gray);
        }
        
        .hero-text h1 span {
            color: var(--primary-blue);
        }
        
        .hero-text p {
            font-size: 1.1rem;
            margin-bottom: 30px;
            color: var(--medium-gray);
        }
        
        .hero-btns {
            display: flex;
            gap: 15px;
        }
        
        .hero-image {
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .hx_swiper .swiper-pagination {
            position: relative;
            margin-top: 28px;
            bottom: auto;
            left: auto;
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            transform: none;
        }
        
        .hx_swiper .swiper-pagination-bullet {
            width: auto;
            height: auto;
            margin: 0;
            padding: 8px 18px;
            border-radius: 999px;
            opacity: 1;
            line-height: 1.35;
            font-size: 0.9rem;
            background: rgba(74, 144, 226, 0.12);
            color: var(--dark-gray);
        }
        
        .hx_swiper .swiper-pagination-bullet-active {
            background: var(--primary-blue);
            color: #fff;
        }
        
        /* 核心优势 */
        .features {
            padding: 80px 0;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }
        
        .feature-card {
            background-color: var(--white);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        
        .feature-icon {
            font-size: 2.5rem;
            color: var(--primary-blue);
            margin-bottom: 20px;
        }
        
        .feature-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark-gray);
        }
        
        /* 产品展示 */
        .products {
            padding: 80px 0;
            background-color: var(--light-gray);
        }
        
        .products-filter {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 40px;
        }
        
        .filter-btn {
            padding: 8px 20px;
            background-color: white;
            border: 1px solid var(--border-gray);
            border-radius: 30px;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .filter-btn.active, .filter-btn:hover {
            background-color: var(--primary-blue);
            color: white;
            border-color: var(--primary-blue);
        }
        
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .product-card {
            background-color: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .product-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        
        .product-img {
            height: 200px;
            background-color: #f0f0f0;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #aaa;
            width: 100%;
        }
        
        .product-content {
            padding: 20px;
        }
        
        .product-category {
            display: inline-block;
            background-color: #e8f2ff;
            color: var(--primary-blue);
            padding: 4px 10px;
            border-radius: 30px;
            font-size: 0.8rem;
            margin-bottom: 10px;
        }
        .product-category1{
            background-color: #f4e8df;
        }
        .product-category2{
            background-color: #ecf9e3;
        }
         .product-category3{
            background-color: #f9e3e3;
        }
         .product-category4{
            background-color: #efe3f9;
        }
        
        .product-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        
        .product-card p {
            color: var(--text-light);
            font-size: 0.9rem;
            margin-bottom: 20px;
        }
        

           .breadcrumb{display: none;}
     /* --- 核心：独立筛选布局 --- */
        .product-layout { display: grid; grid-template-columns: 220px 1fr; gap: 30px; }
        
        /* 左侧：三级分类菜单 (仅分类) */
        .category-sidebar { position: sticky; top: 100px; align-self: start; }
        .category-menu { background-color: var(--white); border-radius: 8px; box-shadow: var(--shadow-sm); overflow: hidden; }
        .menu-item { border-bottom: 1px solid var(--border-gray); }
        .menu-item:last-child { border-bottom: none; }
        
        /* 一级分类 */
        .menu-title { display: flex; justify-content: space-between; align-items: center; padding: 15px 20px; font-weight: 600; color: var(--dark-gray); cursor: pointer; transition: all 0.3s ease; background-color: #f8fafc; }
        .menu-title:hover { background-color: #e8f2ff; color: var(--primary-blue); }
        .menu-title.active { background-color: var(--primary-blue); color: white; }
        .menu-title i { font-size: 0.9rem; transition: transform 0.3s ease; }
        .menu-title.active i { transform: rotate(90deg); }
        
        /* 二级分类 */
        .sub-menu { max-height: 0; overflow: hidden; transition: max-height 0.4s ease-out; background-color: #fdfdfd; }
        .sub-menu.show { max-height: 1000px; } /* 增大高度以容纳三级分类 */
        .sub-menu-title { display: flex; justify-content: space-between; align-items: center; padding: 12px 20px 12px 30px; color: var(--medium-gray); cursor: pointer; font-size: 0.95rem; border-top: 1px dashed #eee; transition: all 0.3s ease; }
        .sub-menu-title:hover { color: var(--primary-blue); background-color: #f0f4f8; }
        .sub-menu-title.active { color: var(--primary-blue); font-weight: 600; }
        
        /* 三级分类 (新增示例) */
        .third-level-menu { max-height: 0; overflow: hidden; transition: max-height 0.3s ease-out; background-color: #fff; }
        .third-level-menu.show { max-height: 400px; }
        .third-level-menu a { display: block; padding: 10px 20px 10px 45px; color: #888; font-size: 0.9rem; border-top: 1px dotted #f0f0f0; transition: all 0.2s ease; }
        .third-level-menu a:hover, .third-level-menu a.active { color: var(--primary-blue); background-color: #e8f2ff; }
        
        /* 右侧产品展示区 */
        .results-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 30px; flex-wrap: wrap; gap: 15px; }
        .results-bar h3 { font-size: 1.2rem; color: var(--dark-gray); }
        .results-count { color: var(--medium-gray); font-size: 0.9rem; }
        .results-count strong { color: var(--primary-blue); }
        
        /* 场景筛选区 (独立出来) */
        .scene-filter-bar { margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid var(--border-gray); }
        .scene-filter-bar h4 { font-size: 1rem; color: var(--dark-gray); margin-bottom: 15px; }
        .scene-filter-tags { display: flex; flex-wrap: wrap; gap: 10px; }
        .scene-filter-btn { padding: 8px 18px; background-color: white; border: 1px solid var(--border-gray); border-radius: 30px; cursor: pointer; transition: all 0.3s ease; font-size: 0.9rem; }
        .scene-filter-btn.active, .scene-filter-btn:hover { background-color: var(--primary-blue); color: white; border-color: var(--primary-blue); }
        
        /* 产品网格 */
        .products-grid { display: grid; grid-template-columns: repeat(3, 1fr);; gap: 20px; }
        .product-card { background-color: var(--white); border-radius: 8px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all 0.3s ease; display: flex; flex-direction: column; }
        .product-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
        .product-img { height: 200px; background-color: #f0f0f0; display: flex; align-items: center; justify-content: center; color: #aaa; font-size: 3rem; color: #4a90e2; }
        .product-content { padding: 15px; flex-grow: 1; display: flex; flex-direction: column; }
        /* .product-category { display: inline-block; background-color: #e8f2ff; color: var(--primary-blue); padding: 4px 10px; border-radius: 30px; font-size: 0.8rem; margin-bottom: 10px; align-self: flex-start; } */
        .product-card h3 { font-size: 1.2rem; margin-bottom: 10px; color: var(--dark-gray); }
        .product-card p { color: var(--medium-gray); font-size: 0.9rem; margin-bottom: 20px; flex-grow: 1; }
.fixedBot{display: none;}
        /* 解决方案 */
        .solutions {
            padding: 80px 0;
        }
        
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .solution-card {
            background-color: var(--white);
            border-radius: var(--radius);
            padding: 30px;
            box-shadow: var(--shadow);
            border-top: 4px solid var(--primary-blue);
            transition: var(--transition);
        }
        
        .solution-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        
        .solution-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark-gray);
        }
        
        .solution-card .lll {
            margin-top: 15px;
        }
        .solution-card .lll span {
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
            display: block;
        }
        
        .solution-card .lll span:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent-orange);
            font-weight: bold;
        }
          /* 标杆案例 */
        .case-studies {
            padding: 80px 0;
            background-color: var(--light-gray);
        }
        
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        
        .case-card {
            background-color: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .case-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        
        .case-img {
            height: 220px;
            overflow: hidden;
        }
        
        .case-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .case-card:hover .case-img img {
            transform: scale(1.05);
        }
        
        .case-content {
            padding: 25px;
        }
        
        .case-content h3 {
            font-size: 1.4rem;
            color: var(--dark-gray);
            margin-bottom: 15px;
        }
        
        .case-content p {
            color: var(--medium-gray);
            margin-bottom: 20px;
            line-height: 1.7;
        }
        
        /* 新闻资讯 */
        .news {
            padding: 80px 0;
        }
        
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(48%, 1fr));
            gap: 30px;
        }
        
        .news-card {
            background-color: var(--white);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }
        
        .news-img {
            height: 180px;
            overflow: hidden;
        }
        
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        
        .news-content {
            padding: 20px;
        }
        
        .news-date {
            font-size: 0.9rem;
            color: var(--text-light);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
        }
        
        .news-date i {
            color: var(--accent-orange);
            margin-right: 8px;
        }
        
        .news-content h3 {
            font-size: 1.2rem;
            color: var(--dark-gray);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        
        .news-content p {
            color: var(--medium-gray);
            font-size: 0.95rem;
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
         /* 企业简介 */
        .company-brief {
            padding: 80px 0;
        }
        
        .brief-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        
        .brief-text {
            padding: 20px;
        }
        
        .brief-text p {
            font-size: 1.1rem;
            color: var(--medium-gray);
            margin-bottom: 25px;
            line-height: 1.8;
        }
        
        .brief-image {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: #e8f2fe;
        }
        
        .brief-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        
        
        /* 咨询表单 */
        .consultation {
            padding: 80px 0;
            background-color: var(--light-gray);
        }
        
        .consultation-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid var(--border-gray);
            border-radius: var(--radius);
            font-size: 1rem;
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--primary-blue);
        }
        
        textarea.form-control {
            height: 100px;
            resize: vertical;
        }
        
        /* 底部 */
        .footer {
            background-color: var(--dark-gray);
            color: #ccc;
            padding: 60px 0 30px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-section h3 {
            font-size: 1.2rem;
            color: white;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-section h3:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: var(--accent-orange);
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a:hover {
            color: var(--accent-orange);
        }
        
        .contact-info li {
            margin-bottom: 15px;
            display: flex;
            align-items: flex-start;
        }
        
        .contact-icon {
            color: var(--accent-orange);
            margin-right: 10px;
            margin-top: 3px;
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #444;
            color: #aaa;
            font-size: 0.9rem;
        }
        
        /* 固定咨询按钮 */
        .fixed-consult-btn {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background-color: var(--accent-orange);
            color: white;
            width: 60px;
            height: 60px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            box-shadow: 0 4px 15px rgba(255, 123, 0, 0.3);
            z-index: 999;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .fixed-consult-btn:hover {
            transform: scale(1.1);
        }
        
        /* 询盘弹窗 */
        .consult-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 2000;
            align-items: center;
            justify-content: center;
        }
        
        .modal-content {
            background-color: white;
            width: 90%;
            max-width: 500px;
            border-radius: 8px;
            padding: 30px;
            position: relative;
        }
        
        .close-modal {
            position: absolute;
            top: 15px;
            right: 20px;
            font-size: 1.8rem;
            cursor: pointer;
            color: #aaa;
        }
        
        .close-modal:hover {
            color: var(--dark-gray);
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-content, .consultation-content {
                grid-template-columns: 1fr;
                gap: 0px;
            }
            
            .hero-text h1 {
                font-size: 2.2rem;
            }
        }
        
        @media (max-width: 768px) {
            .hero .container {
                padding: 0;
    padding-top: 100px;
}
.hero-text p {
    font-size: .98rem;
    margin-bottom: 15px;
    color: var(--medium-gray);
}
.hero-btns{flex-direction: unset !important;}
.hero-btns a{width: 48%;}
            .nav-desktop {
                display: none;
            }
            
            .mobile-toggle {
                display: block;
            }
            
            .hero {
                padding-top: 100px;
                padding-bottom: 60px;
            }
            
            .hero-text h1 {
                font-size: 1.5rem;
            }
            
            .section-title {
                font-size: 2rem;
                margin-bottom: .6rem;
            }
            .section-subtitle {
    /* font-size: .9rem; */
    margin-bottom: 1rem;
    text-align: center;
    padding: 0  2vw;
}
/* .hero .container {
    display: flex;
    flex-wrap: wrap;
    flex-direction: column-reverse;
}
.hero-content{width: 100% !important;} */
            
            .features, .products, .solutions, .consultation {
                padding: 60px 0;
            }
        }
        
        @media (max-width: 576px) {
            .hero-btns {
                flex-direction: column;
            }
            
            .btn {
                width: 100%;
                margin-bottom: 10px;
                font-size: 12px !important;
                padding: 1vh 2vh !important;
            }
            
            .products-grid {
                grid-template-columns: 1fr;
            }
        }
 /* 产品页面 */
 .page_products{
    padding-bottom: 6vh;
 }
 .filter-area{
    margin: 3vh 0;
 }
.page_products .filter-group{
    margin: 10px 0;
    border: 1px solid var(--border-gray);
    border-radius: 30px;
    padding: 4px 15px;
} 

.page_products .filter-group .filter-btn{
    border: none;
}
.fz12{font-size: 12px;}
/* 产品详情 */
.page_product_detail{
    padding: 4vh 0;
}
.P_PD_top,.P_PD_content{
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.1);
    
    }
    .P_PD_content{
        margin-top: 4vh;
    }
    .P_PD_top .img{
    width: 36%;
    margin-right: 3%;
    border: 1px solid #ccc;
    
    
    }
    .P_PD_top .img img{
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    }
    .P_PD_top h2{
    line-height: 1.3;
    font-size: 22px;
    font-weight: bold;
    color: rgba(51,51,51,1);
    border-bottom: 1px solid #ccc;
    padding-bottom: 10px;
    }
    .P_PD_top .sketch{
    font-size: 16px;
    white-space: pre-line;
    line-height: 1.6;
    opacity: .7;
    margin: 10px 0;
    }
    .P_PD_top  .classify{
    line-height: 2.5;
    font-size: 14px;
    color: rgba(136,136,136,1);
    font-weight: bold;
    }
    .P_PD_top  .classify a{color: var(--main);}
    .P_PD_top .call{
    line-height: 1.5;
    font-size: 18px;
    font-weight: bold;
    border-top: 1px dashed #ccc;
    border-bottom: 1px dashed #ccc;
    padding: 1vh 0;
    margin-top: 6px;
    margin-bottom: 10px;
    }
    .P_PD_top .call i{
    display: block;
    width: 20px;height: 20px;
    background: url(../images/icon_call2.png) no-repeat left center;
    background-size: 20px 20px;
    margin-right: 6px;
    }
    .P_PD_top .call span{
    line-height: normal;
    font-size: 26px;
    font-weight: normal;
    color: var(--primary-blue);
    }
    /* .P_PD_content img{
    width: 100%;
    display: block !important;
    } */
    .next_last div{
    width: 49%;
    background-color: #fff;
    padding: 10px 20px;
    margin-top: 20px;
    box-shadow: 0 0 20px 0 rgba(0, 0, 0, 0.1);

    }

    /* 方案列表 */
     .page_plan{padding: 6vh 0;}
          /* Solution Filters & Title */
      .page_plan .section-header { text-align: center; margin-bottom: 50px; }
      .page_plan  .section-header h2 { font-size: 2.2rem; color: var(--dark-gray); margin-bottom: 15px; }
      .page_plan  .section-header p { color: var(--medium-gray); max-width: 600px; margin: 0 auto 30px; }
      .page_plan  .solution-filters { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px; }
      .page_plan  .filter-btn { padding: 8px 20px; background-color: white; border: 1px solid var(--border-gray); border-radius: 30px; cursor: pointer; transition: all 0.3s ease; font-size: 0.9rem; }
       .page_plan .filter-btn.active, .filter-btn:hover { background-color: var(--primary-blue); color: white; border-color: var(--primary-blue); box-shadow: 0 4px 10px rgba(26, 95, 180, 0.2); }

        /* Solutions Grid - Modern Card Style */
       .page_plan .solutions-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); gap: 30px; }
       .page_plan .solution-card { 
            background-color: var(--white); 
            border-radius: 12px; 
            padding: 40px 30px; 
            box-shadow: var(--shadow-sm); 
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); 
            position: relative;
            overflow: hidden;
            border: 1px solid transparent;
        }
        .page_plan .solution-card:hover { 
            transform: translateY(-10px); 
            box-shadow: var(--shadow-lg); 
            border-color: rgba(26, 95, 180, 0.1);
        }
        .page_plan .solution-icon { 
            font-size: 2.8rem; 
            color: var(--primary-blue); 
            margin-bottom: 25px; 
            transition: all 0.3s ease;
            display: inline-block;
        }
       .page_plan .solution-card:hover .solution-icon { 
            transform: scale(1.1) rotate(-5deg); 
            color: var(--accent-orange);
        }
       .page_plan .solution-card h3 { font-size: 1.4rem; margin-bottom: 15px; color: var(--dark-gray); font-weight: 600; }
       .page_plan .solution-card p { color: var(--medium-gray); margin-bottom: 25px; min-height: 60px; }
       .page_plan .solution-features { margin-bottom: 30px; }
      .page_plan  .solution-features span { margin-bottom: 12px; padding-left: 25px; position: relative; color: #555; font-size: 0.95rem; }
       .page_plan .solution-features span::before { content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 0; color: var(--accent-orange); }
       .page_plan .card-btn { 
            display: inline-flex; 
            align-items: center; 
            gap: 8px; 
            color: var(--primary-blue); 
            font-weight: 600; 
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.3s ease;
        }
       .page_plan .solution-card:hover .card-btn { opacity: 1; transform: translateY(0); }
       .page_plan .card-btn i { transition: transform 0.3s ease; }
       .page_plan .card-btn:hover i { transform: translateX(5px); }


         
        /* Article Detail Section */
        .article-detail-section { padding: 60px 0; }
        .article-detail-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; }
        
        /* Main Article Content */
        .article-main-content .article-header { margin-bottom: 30px; border-bottom: 1px solid var(--border-gray); padding-bottom: 20px; }
        .article-main-content h1 { font-size: 2.2rem; color: var(--dark-gray); margin-bottom: 15px; line-height: 1.3; }
        .article-meta { display: flex; flex-wrap: wrap; gap: 20px; color: var(--medium-gray); font-size: 0.9rem; }
        .article-meta span { display: flex; align-items: center; gap: 6px; }
        .article-meta i { color: var(--primary-blue); }
        
        .article-featured-image { width: 100%; height: 400px; border-radius: 12px; object-fit: cover; margin-bottom: 40px; background-color: #ddd; display: flex; align-items: center; justify-content: center; color: #888; font-size: 1.5rem; background-image: url('https://via.placeholder.com/1200x500/1a5fb4/ffffff?text=Article+Featured+Image'); background-size: cover; background-position: center; }
        
        .article-body { color: #444; line-height: 1.9; font-size: 1.05rem; }
        .article-body h2 { font-size: 1.6rem; color: var(--dark-gray); margin-top: 40px; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--border-gray); }
        .article-body h3 { font-size: 1.3rem; color: var(--dark-gray); margin-top: 30px; margin-bottom: 15px; }
        .article-body p { margin-bottom: 20px; }
        .article-body ul, .article-body ol { margin-left: 20px; margin-bottom: 20px; }
        .article-body li { margin-bottom: 10px; }
        .article-body img { max-width: 100%; border-radius: 8px; margin: 20px 0; }
        .article-body blockquote { border-left: 4px solid var(--accent-orange); background-color: #f8fafc; padding: 20px 25px; margin: 30px 0; border-radius: 0 8px 8px 0; font-style: italic; color: #555; }
        .article-body blockquote p { margin-bottom: 0; }
        
        /* --- 新增：上一篇 / 下一篇 导航 --- */
        .post-navigation { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 50px; margin-bottom: 50px; }
        .post-nav-link { display: block; padding: 20px; border: 1px solid var(--border-gray); border-radius: 8px; transition: all 0.3s ease; background-color: var(--white); }
        .post-nav-link:hover { border-color: var(--primary-blue); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
        .post-nav-link.prev { text-align: left; }
        .post-nav-link.next { text-align: right; }
        .post-nav-label { display: block; font-size: 0.85rem; color: var(--medium-gray); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }
        .post-nav-title { font-size: 1.1rem; color: var(--dark-gray); font-weight: 600; line-height: 1.4; }
        .post-nav-link:hover .post-nav-title { color: var(--primary-blue); }
        
        /* Tags & Share */
        .article-footer { margin-top: 0; /* 修改：移除顶部margin，因为导航已包含margin */ padding-top: 30px; border-top: 1px solid var(--border-gray); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 20px; }
        .article-tags a { display: inline-block; background-color: #e8f2ff; color: var(--primary-blue); padding: 6px 14px; border-radius: 30px; font-size: 0.9rem; margin-right: 10px; margin-bottom: 10px; }
        .article-tags a:hover { background-color: var(--primary-blue); color: white; }
        .share-buttons a { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background-color: var(--light-gray); color: var(--medium-gray); margin-left: 10px; font-size: 1.1rem; }
        .share-buttons a:hover { background-color: var(--primary-blue); color: white; transform: translateY(-3px); }
        
        /* Sidebar */
        .article-sidebar { position: sticky; top: 100px; }
        .sidebar-card { background-color: var(--white); border-radius: 12px; padding: 30px; box-shadow: var(--shadow-sm); margin-bottom: 30px; border: 1px solid var(--border-gray); }
        .sidebar-card h3 { font-size: 1.2rem; color: var(--dark-gray); margin-bottom: 20px; padding-bottom: 10px; border-bottom: 1px solid var(--border-gray); }
        
        .toc-list li { margin-bottom: 12px; }
        .toc-list a { color: var(--medium-gray); display: flex; align-items: center; gap: 8px; }
        .toc-list a:hover { color: var(--primary-blue); }
        .toc-list a::before { content: "•"; color: var(--accent-orange); font-weight: bold; }
        
        .recent-posts li { margin-bottom: 15px; padding-bottom: 15px; border-bottom: 1px dashed #eee; }
        .recent-posts li:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
        .recent-posts a { display: block; color: var(--dark-gray); font-weight: 500; line-height: 1.4; }
        .recent-posts a:hover { color: var(--primary-blue); }
        .recent-posts .post-date { font-size: 0.85rem; color: var(--medium-gray); margin-top: 5px; display: block; }
        
        .widget-cta { background: linear-gradient(135deg, var(--primary-blue), #0f4d9c); text-align: center; }
        .widget-cta h3 { color: white; border-bottom-color: rgba(255,255,255,0.2); }
        .widget-cta p { color: rgba(255,255,255,0.9); margin-bottom: 20px; font-size: 0.95rem; }
        .widget-cta .btn { background-color: var(--accent-orange); color: white; width: 100%; }
          /* Responsive */
        @media (max-width: 992px) { .article-detail-grid { grid-template-columns: 1fr; } .article-sidebar { position: static; margin-top: 40px; } }
        @media (max-width: 768px) { .nav-desktop { display: none; } .mobile-toggle { display: block; } .article-featured-image { height: 250px; } .article-main-content h1 { font-size: 1.8rem; } .post-navigation { grid-template-columns: 1fr; } }

        
         /* Main Content Section */
        .section-padding { padding: 80px 0; }
        .bg-light { background-color: var(--light-gray); }
        
        /* About Intro Section */
        .about-intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
        .about-intro-text h2 { font-size: 2rem; color: var(--dark-gray); margin-bottom: 20px; }
        .about-intro-text p { color: var(--medium-gray); line-height: 1.8; margin-bottom: 15px; }
        .about-intro-image { border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-lg); height: 400px; background-color: #ddd; display: flex; align-items: center; justify-content: center; color: #888; font-size: 1.5rem; background-image: url('https://via.placeholder.com/800x600/1a5fb4/ffffff?text=Company+Team'); background-size: cover; background-position: center; }
        
        /* Core Advantages Section */
        .advantages-grid {     display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-gap: 1.6vw;}
        .advantage-card { background-color: var(--white); border-radius: 12px; padding: 35px 30px; text-align: center; box-shadow: var(--shadow-sm); transition: all 0.3s ease; border-top: 4px solid transparent; }
        .advantage-card:hover { transform: translateY(-8px); border-top-color: var(--accent-orange); box-shadow: var(--shadow-lg); }
        .advantage-icon { font-size: 2.5rem; color: var(--primary-blue); margin-bottom: 20px; }
        .advantage-card h3 { font-size: 1.3rem; color: var(--dark-gray); margin-bottom: 10px; }
        .advantage-card p { color: var(--medium-gray); font-size: 0.95rem; }
        
        /* Team Section */
        .team-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
        .team-member-card { background-color: var(--white); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); text-align: center; transition: all 0.3s ease; }
        .team-member-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
        .member-photo { width: 100%; height: 280px; object-fit: cover; background-color: #eee; display: flex; align-items: center; justify-content: center; color: #aaa; font-size: 1.2rem; background-image: url('https://via.placeholder.com/400x400/e8f2fe/1a5fb4?text=Team+Member'); background-size: cover; background-position: center; }
        .member-info { padding: 25px 20px; }
        .member-info h4 { font-size: 1.2rem; color: var(--dark-gray); margin-bottom: 5px; }
        .member-info span { color: var(--primary-blue); font-weight: 500; font-size: 0.95rem; }
        
        /* Certifications Section */
        .cert-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 30px; }
        .cert-item { text-align: center; width: calc(25% - 30px); min-width: 200px; }
        .cert-item img { max-width: 150px; margin-bottom: 15px; filter: grayscale(100%); transition: filter 0.3s ease; }
        .cert-item:hover img { filter: grayscale(0%); }
        .cert-item p { font-weight: 500; color: var(--dark-gray); }
        
        /* Clients Section */
        .clients-logos { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 40px; filter: grayscale(100%); opacity: 0.7; transition: all 0.3s ease; }
        .clients-logos:hover { filter: grayscale(0%); opacity: 1; }
        .clients-logos img { max-height: 60px; max-width: 150px; object-fit: contain; }

        /* Responsive */
        @media (max-width: 992px) { .about-intro-grid { grid-template-columns: 1fr; } .about-intro-image { order: -1; height: 300px; } }
        @media (max-width: 768px) { .nav-desktop { display: none; } .mobile-toggle { display: block; } .page-hero h1 { font-size: 2rem; } }
    

          /* Contact Section */
        .contact-section { padding: 80px 0; }
        .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
        
        /* Contact Info */
        .contact-info-block h2 { font-size: 2rem; color: var(--dark-gray); margin-bottom: 20px; }
        .contact-info-block > p { color: var(--medium-gray); margin-bottom: 40px; line-height: 1.8; }
        .contact-list { margin-bottom: 40px; }
        .contact-list-item { display: flex; align-items: flex-start; margin-bottom: 25px; }
        .contact-icon-wrapper { width: 50px; height: 50px; background-color: #e8f2ff; border-radius: 50%; display: flex; align-items: center; justify-content: center; margin-right: 20px; flex-shrink: 0; }
        .contact-icon-wrapper i { color: var(--primary-blue); font-size: 1.2rem; }
        .contact-text h4 { font-size: 1.1rem; color: var(--dark-gray); margin-bottom: 5px; }
        .contact-text p { color: var(--medium-gray); font-size: 1rem; }
        .contact-text a { color: var(--medium-gray); }
        .contact-text a:hover { color: var(--primary-blue); }
        
        /* Business Hours */
        .business-hours { background-color: var(--light-gray); padding: 25px; border-radius: 8px; }
        .business-hours h4 { font-size: 1.1rem; color: var(--dark-gray); margin-bottom: 15px; }
        .business-hours p { color: var(--medium-gray); margin-bottom: 5px; }
        /* Contact Form */
        .contact-form-block { background-color: var(--white); padding: 40px; border-radius: 12px; box-shadow: var(--shadow-sm); border: 1px solid var(--border-gray); }
        .contact-form-block h3 { font-size: 1.5rem; color: var(--dark-gray); margin-bottom: 10px; }
        .contact-form-block p { color: var(--medium-gray); margin-bottom: 30px; }
        .form-group { margin-bottom: 20px; }
        .form-group label { display: block; margin-bottom: 8px; font-weight: 500; color: var(--dark-gray); }
        .form-control { width: 100%; padding: 12px 15px; border: 1px solid var(--border-gray); border-radius: 4px; font-size: 1rem; transition: border-color 0.3s ease; }
        .form-control:focus { outline: none; border-color: var(--primary-blue); }
        textarea.form-control { min-height: 40px; resize: vertical; }
        .form-code img{
            border: 1px solid var(--border-gray);
            margin-left: 6px;
                /* position: absolute;
                right: 4px;
                top: 35px; */
                height: 42px;
        }
        .error-code{
            right: 150px !important;
        }
        /* Map Section */
        .map-section { padding-bottom: 80px; }
        .map-container { border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); height: 450px; background-color: #eee; display: flex; align-items: center; justify-content: center; color: #888; font-size: 1.2rem; }
        .map-container iframe{
            width: 100% !important;
            height: 100% !important;
        }
        /* 实际项目中替换为真实的 iframe 嵌入代码 */
        .map-placeholder { text-align: center; }
        .map-placeholder i { font-size: 3rem; color: var(--primary-blue); margin-bottom: 15px; }
           @media (max-width: 992px) { .contact-grid { grid-template-columns: 1fr; } }


           .page-hero { padding: 80px 0; background: linear-gradient(135deg, #f8fafc 0%, #e8f2fe 100%); text-align: center; }
        .page-hero h1 { font-size: 2.8rem; color: var(--dark-gray); margin-bottom: 15px; font-weight: 700; }
        .page-hero p { font-size: 1.15rem; color: var(--medium-gray); max-width: 800px; margin: 0 auto; line-height: 1.8; }
        
        /* Main Content */
        .section-padding { padding: 80px 0; }
        .bg-light { background-color: var(--light-gray); }
        
        /* Service Process */
        .process-steps { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-top: 50px; position: relative; }
        .process-steps::before { content: ''; position: absolute; top: 40px; left: 10%; width: 80%; height: 2px; background-color: var(--border-gray); z-index: 0; }
        .step-item { text-align: center; position: relative; z-index: 1; flex: 1; }
        .step-icon { width: 80px; height: 80px; background-color: var(--white); border: 2px solid var(--primary-blue); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 20px; font-size: 1.8rem; color: var(--primary-blue); transition: all 0.3s ease; }
        .step-item:hover .step-icon { background-color: var(--primary-blue); color: white; transform: scale(1.1); }
        .step-item h4 { font-size: 1.1rem; color: var(--dark-gray); margin-bottom: 5px; }
        .step-item p { font-size: 0.9rem; color: var(--medium-gray); }
        
        /* Software Types Grid */
        .software-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        .software-card { background-color: var(--white); border-radius: 12px; padding: 35px 30px; box-shadow: var(--shadow-sm); transition: all 0.3s ease; border-bottom: 4px solid transparent; display: flex; flex-direction: column; }
        .software-card:hover { transform: translateY(-8px); border-bottom-color: var(--accent-orange); box-shadow: var(--shadow-lg); }
        .software-icon { font-size: 2.5rem; color: var(--primary-blue); margin-bottom: 20px; }
        .software-card h3 { font-size: 1.3rem; color: var(--dark-gray); margin-bottom: 15px; }
        .software-card p { color: var(--medium-gray); margin-bottom: 20px; flex-grow: 1; }
        .software-card ul { text-align: left; padding-left: 0; list-style: none; }
        .software-card .lll span {display: block; margin-bottom: 10px; padding-left: 22px; position: relative; color: #555; font-size: 0.95rem; }
        .software-card .lll span::before { content: "\f00c"; font-family: "Font Awesome 6 Free"; font-weight: 900; position: absolute; left: 0; color: var(--accent-orange); }
        
        /* CTA Section */
        .cta-section { background: linear-gradient(135deg, var(--primary-blue), #0f4d9c); padding: 60px 0; text-align: center; border-radius: 12px; margin-top: 60px; }
        .cta-section h2 { color: white; font-size: 2rem; margin-bottom: 15px; }
        .cta-section p { color: rgba(255,255,255,0.9); margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }
        .cta-section .btn { background-color: var(--accent-orange); color: white; }
        .cta-section .btn:hover { background-color: white; color: var(--primary-blue); }

        /* Responsive */
        @media (max-width: 768px) { .nav-desktop { display: none; } .mobile-toggle { display: block; } .page-hero h1 { font-size: 2rem; } }
  

         .section-padding { padding: 80px 0; }
        .bg-light { background-color: var(--light-gray); }
        
        /* Market Positioning */
        .positioning-section { text-align: center; }
        .positioning-section h2 { font-size: 2.2rem; color: var(--dark-gray); margin-bottom: 20px; }
        .positioning-section p { color: var(--medium-gray); max-width: 800px; margin: 0 auto 40px; line-height: 1.8; font-size: 1.1rem; }
        .key-benefits { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; margin-bottom: 40px; }
        .benefit-item { background-color: var(--white); padding: 20px 30px; border-radius: 8px; box-shadow: var(--shadow-sm); font-weight: 500; color: var(--dark-gray); }
        .benefit-item i { color: var(--accent-orange); margin-right: 10px; }

        /* Application Scenarios Grid */
        .scenarios-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
        .scenario-card { background-color: var(--white); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all 0.3s ease; }
        .scenario-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
        .scenario-img { height: 220px; background-color: #ddd; display: flex; align-items: center; justify-content: center; color: #888; font-size: 1.2rem; background-size: cover; background-position: center; }
        .scenario-content { padding: 25px; }
        .scenario-content h3 { font-size: 1.3rem; color: var(--dark-gray); margin-bottom: 10px; }
        .scenario-content p { color: var(--medium-gray); font-size: 0.95rem; margin-bottom: 20px; }
        .scenario-link { color: var(--primary-blue); font-weight: 600; display: inline-flex; align-items: center; gap: 5px; }
        .scenario-link:hover { gap: 10px; }
        
        /* Customer Advantage Section */
        .advantage-section { background-color: var(--white); border-radius: 12px; padding: 50px; box-shadow: var(--shadow-sm); margin-top: 60px; }
        .advantage-section h2 { text-align: center; margin-bottom: 40px; }
        .advantage-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
        .advantage-card { text-align: center; padding: 30px; border: 1px solid var(--border-gray); border-radius: 8px; transition: all 0.3s ease; }
        .advantage-card:hover { border-color: var(--primary-blue); transform: scale(1.02); }
        .advantage-card i { font-size: 2.5rem; color: var(--primary-blue); margin-bottom: 20px; }
        .advantage-card h4 { font-size: 1.2rem; color: var(--dark-gray); margin-bottom: 10px; }
        .advantage-card p { color: var(--medium-gray); line-height: 1.7; }

              /* 一级导航栏 (flex 居中，响应式内边距) */
        .nav-primary {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            padding: 0 1.5rem;
            position: relative;
            align-items: center;
        }

        /* 一级菜单项 */
        .nav-item {
            position: relative;
        }

        /* 一级链接样式 */
        .primary-link {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 0rem 1rem;
            font-size: 1rem;
            /* font-weight: 600; */
            color: var(--dark-gray);
            text-decoration: none;
            letter-spacing: 0.5px;
            transition: all 0.25s ease;
            background: transparent;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            line-height: 90px;
        }

        /* 一级菜单悬浮/焦点效果 */
        .nav-item:hover > .primary-link,
        .nav-item:focus-within > .primary-link {
            background: var(--main);
            color: #ffffff;
            border-radius: 8px 8px 0 0;
        }

        /* 下拉箭头 (模拟小三角) */
        .arrow {
            font-size: 12px;
            transition: transform 0.2s;
            display: inline-block;
        }

        .nav-item:hover > .primary-link .arrow,
        .nav-item:focus-within > .primary-link .arrow {
            transform: rotate(180deg);
        }

        /* ========= 二级菜单容器 (默认隐藏) ========= */
        .dropdown-secondary {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 220px;
            background: #ffffff;
            border-radius: 0 12px 12px 12px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
            list-style: none;
            padding: 0.6rem 0;
            visibility: hidden;
            opacity: 0;
            transform: translateY(-12px);
            transition: visibility 0.2s, opacity 0.2s, transform 0.2s ease;
            z-index: 100;
        }

        /* 二级菜单项 */
        .dropdown-secondary li {
            position: relative;
        }

        .secondary-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.7rem 1.2rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: #1e2a36;
            text-decoration: none;
            transition: background 0.2s;
            background: #ffffff;
            white-space: nowrap;
        }

        .secondary-link:hover {
            background: #ecf3f9;
            color: #0a5c7e;
        }

        /* 二级菜单箭头 (如果有三级菜单) */
        .has-third .secondary-link .arrow {
            color: #6c7a89;
            font-size: 12px;
            margin-left: 12px;
        }

        /* ========= 三级菜单容器 ========= */
        .dropdown-third {
            position: absolute;
            top: 0;
            left: 100%;
            min-width: 200px;
            background: #fefefe;
            border-radius: 12px;
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
            list-style: none;
            padding: 0.5rem 0;
            visibility: hidden;
            opacity: 0;
            transform: translateX(-8px);
            transition: visibility 0.2s, opacity 0.2s, transform 0.2s ease;
            border-left: 3px solid #2c7da0;
        }

        .third-link {
            display: block;
            padding: 0.6rem 1.2rem;
            font-size: 0.9rem;
            font-weight: 400;
            color: #2c3e50;
            text-decoration: none;
            white-space: nowrap;
            transition: background 0.2s, color 0.2s;
        }

        .third-link:hover {
            background: #e4edf5;
            color: #0f5b7a;
            padding-left: 1.5rem;
        }

        /* 显示二级菜单 (hover 或 focus 链) */
        .nav-item:hover > .dropdown-secondary,
        .nav-item:focus-within > .dropdown-secondary {
            visibility: visible;
            opacity: 1;
            transform: translateY(0);
        }

        /* 显示三级菜单 - 悬浮在带三级菜单的二级项上 */
        .dropdown-secondary li.has-third:hover > .dropdown-third,
        .dropdown-secondary li.has-third:focus-within > .dropdown-third {
            visibility: visible;
            opacity: 1;
            transform: translateX(0);
        }

        /* 针对触摸屏/键盘支持: 保持焦点延续 */
        .dropdown-secondary li a:focus-visible ~ .dropdown-third,
        .dropdown-secondary li.has-third:focus-within .dropdown-third {
            visibility: visible;
            opacity: 1;
            transform: translateX(0);
        }

        /* 确保三级菜单不超出右侧边界 (如果靠右则反向展开? 可选简约处理，这里做防溢出但不做完全翻转，因为示例背景右侧有空间) */
        @media (max-width: 1100px) {
            .dropdown-third {
                left: auto;
                right: 100%;
            }
            .dropdown-secondary li.has-third:hover > .dropdown-third {
                left: auto;
                right: 100%;
                transform: translateX(0);
            }
        }

        /* 响应式: 当屏幕过小，二级菜单适当左对齐调整，不破坏结构 */
        @media (max-width: 768px) {
            .nav-primary {
                padding: 0 0.8rem;
                overflow-x: auto;
                flex-wrap: nowrap;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: thin;
            }
            .primary-link {
                padding: 0.8rem 1rem;
                font-size: 0.9rem;
                white-space: nowrap;
            }
            .dropdown-secondary {
                position: fixed;
                top: auto;
                left: 0;
                right: 0;
                width: 90%;
                max-width: 280px;
                margin-left: 1rem;
            }
            /* 移动端简化: 三级菜单相对自适应 */
            .dropdown-third {
                position: static;
                box-shadow: none;
                border-left: none;
                padding-left: 1.2rem;
                background: #f8fafc;
                margin-top: 0.2rem;
                margin-bottom: 0.2rem;
                opacity: 1;
                visibility: hidden;
                max-height: 0;
                overflow: hidden;
                transform: scaleY(0);
                transition: all 0.2s;
            }
            .dropdown-secondary li.has-third:hover .dropdown-third,
            .dropdown-secondary li.has-third:focus-within .dropdown-third {
                visibility: visible;
                max-height: 200px;
                opacity: 1;
                transform: scaleY(1);
                position: relative;
                background: #f1f6fc;
                border-radius: 8px;
            }
            .third-link {
                white-space: normal;
            }
        }