/* ================= 核心品牌色系 (紫蓝渐变风格) ================= */
        :root {
            --primary-purple: #7c3aed;
            --primary-blue: #3b82f6;
            --brand-gradient: linear-gradient(135deg, #7c3aed 0%, #4f46e5 50%, #3b82f6 100%);
            --brand-light: #f3e8ff;
            --text-dark: #1e293b;
            --text-gray: #64748b;
            --text-light: #94a3b8;
            --bg-body: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --border-radius: 16px;
            --border-radius-sm: 8px;
            --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 10px 25px -5px rgba(124, 58, 237, 0.1);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Microsoft YaHei", sans-serif;
            color: var(--text-dark);
            background-color: var(--bg-body);
            line-height: 1.6;
        }

        a { text-decoration: none; color: inherit; cursor: pointer; transition: var(--transition); }
        ul { list-style: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        

    

        

        /* ================= 主体内容区 ================= */
        main { padding: 60px 0 100px; }
    /* ================= 顶部导航 ================= */
    .page-header {
            margin-top: 60px;
            padding: 36px 0;
            background: var(--brand-gradient);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        header {
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            position: fixed; width: 100%; top: 0; z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }
        .nav-container { display: flex; justify-content: space-between; align-items: center; height: 60px; }
        .logo { font-size: 24px; font-weight: bold; background: var(--brand-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; display: flex; align-items: center; gap: 10px; }
        .main-nav { display: flex; gap: 30px; }
        .nav-item { font-weight: 500; padding: 10px 0; cursor: pointer; transition: var(--transition); }
        .nav-item:hover, .nav-item.active { color: var(--primary-purple); }
/* 菜单按钮与下拉逻辑 */
        .menu-wrapper { display: flex; align-items: center; gap: 30px; margin-left: auto; }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 48px;
            height: 48px;
            border-radius: 14px;
            border: 1px solid rgba(148, 163, 184, 0.4);
            background: var(--bg-white);
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 8px 20px rgba(15,23,42,0.07), inset 0 1px 0 rgba(255,255,255,0.7);
            transition: var(--transition);
        }
        .nav-toggle span {
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--text-dark);
            transition: var(--transition);
        }
        .nav-toggle:hover { transform: translateY(-1px); }
        .nav-container.nav-open .nav-toggle {
            background: var(--brand-gradient);
            border-color: transparent;
            box-shadow: 0 8px 25px rgba(124,58,237,0.3);
        }
        .nav-container.nav-open .nav-toggle span { background: #fff; }

        .main-nav { display: flex; gap: 30px; }
        .nav-item { position: relative; font-weight: 500; padding: 10px 0; cursor: pointer; transition: var(--transition); }
        .nav-item:hover { color: var(--primary-purple); }

        /* 子菜单面板 */
        .dropdown-menu {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%) translateY(10px);
            background: var(--bg-white);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            padding: 15px 0;
            min-width: 180px;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.05);
        }

        .nav-item:hover .dropdown-menu {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .dropdown-item {
            padding: 10px 24px;
            display: block;
            color: var(--text-gray);
            transition: var(--transition);
        }
        .dropdown-item:hover {
            background-color: #f3f4f6;
            color: var(--primary-purple);
            padding-left: 30px; /* 悬浮小动效 */
        }

        @media (max-width: 900px) {
            header { position: sticky; }
            .page-header {
            margin-top: 0px;
            padding: 36px 0;
            background: var(--brand-gradient);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

            .nav-container {
                gap: 16px;
                height: auto;
                padding:  0;
                align-items: center;
                position: relative;
            }
            .menu-wrapper {
                margin-left: auto;
                gap: 16px;
                position: relative;
                z-index: 2;
            }
            .nav-toggle { display: flex; }
            .nav-container.nav-open .nav-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
            .nav-container.nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
            .nav-container.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
            .main-nav {
                display: none;
                position: absolute;
                top: calc(100% + 18px);
                right: 0;
                width: min(360px, calc(100vw - 48px));
                flex-direction: column;
                gap: 12px;
                padding: 18px 20px;
                border-radius: 22px;
                background: #fff;
                box-shadow: 0 24px 45px rgba(15, 23, 42, 0.15);
                border: 1px solid rgba(124,58,237,0.12);
                z-index: 1;
            }
            .nav-container.nav-open .main-nav { display: flex; animation: fadeUpAnim 0.4s ease; }
            .nav-item {
                padding: 14px 20px;
                border-radius: 14px;
                background: rgba(248,250,252,0.9);
                text-align: left;
                border: 1px solid rgba(148, 163, 184, 0.25);
                box-shadow: inset 0 1px 0 rgba(255,255,255,0.8);
                font-weight: 600;
            }
            .nav-item.active {
                background: var(--brand-gradient);
                color: #fff;
                border-color: transparent;
                box-shadow: 0 6px 15px rgba(124,58,237,0.25);
            }
            .dropdown-menu {
                position: static;
                transform: none;
                opacity: 1;
                visibility: visible;
                box-shadow: none;
                border: 1px solid var(--border-color);
                margin-top: 8px;
                width: 100%;
                border-radius: 16px;
            }
            .dropdown-item { text-align: center; }
            .nav-item:hover .dropdown-menu { transform: none; }
        }

        @media (max-width: 520px) {
            .main-nav { padding: 14px; }
            .nav-item { font-size: 15px; }
        }

        /* ================= 渐变 Banner ================= */
        .hero {
            padding: 160px 0 0px;
            background: var(--brand-gradient);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

         
        .page-title {
            font-size: 32px; font-weight: 800; margin-bottom: 10px;
        }
        .page-subtitle { color: #fff; font-size: 16px; }

        /* 背景装饰元素 */
      
    
         /* ================= 渐变 Banner ================= */
      

        /* 背景装饰元素 */
        .hero::before, .hero::after ,.page-header::before, .page-header::after{
            content: ''; position: absolute; border-radius: 50%; background: rgba(255,255,255,0.1);
        }
        .hero::before,.page-header::before { width: 400px; height: 400px; top: -100px; left: -100px; }
        .hero::after, .page-header::after { width: 300px; height: 300px; bottom: -50px; right: -50px; }

        .hero h1 { font-size: 48px; margin-bottom: 20px; font-weight: 800; letter-spacing: 2px; }
        .hero p { font-size: 18px; opacity: 0.9; max-width: 700px; margin: 0 auto 40px; line-height: 1.8; }
        .btn-primary {
            background: white; color: var(--primary-purple); font-weight: bold;
            padding: 14px 36px; border-radius: 30px; display: inline-block;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1); transition: var(--transition);
        }
        .btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(0,0,0,0.15); }
        /* ================= 模块通用样式 ================= */
        .section-padding { padding: 100px 0; }
        .section-title {
            text-align: center; font-size: 32px; font-weight: bold; margin-bottom: 60px;
            background: var(--brand-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }

        /* ================= 公司简介 ================= */
        .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .about-text p { font-size: 16px; color: var(--text-gray); line-height: 1.9; margin-bottom: 20px; text-align: justify; }
        .about-image { background: linear-gradient(135deg, #e0e7ff 0%, #f3e8ff 100%); height: 400px; border-radius: var(--border-radius); box-shadow: var(--shadow-md); display: flex; align-items: center; justify-content: center; color: var(--primary-purple); font-size: 60px; }

        /* ================= 生产厂家 (Logo 墙) ================= */
        .manufacturers-bg { background-color: white; }
        .logo-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
        .factory-card {
            background: var(--bg-light); border: 1px solid #eee; border-radius: var(--border-radius);
            padding: 40px 20px; text-align: center; transition: var(--transition);
        }
        .factory-card i { font-size: 40px; color: var(--primary-blue); margin-bottom: 15px; }
        .factory-card h4 { font-size: 18px; color: var(--text-dark); }
        .factory-card:hover { transform: translateY(-10px); box-shadow: var(--shadow-md); border-color: transparent; }

        /* ================= 行业新闻动态 ================= */
        .news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
        .news-card {
            background: white; border-radius: var(--border-radius); overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.03); transition: var(--transition);
            border: 1px solid #f1f5f9;
        }
        .news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
        .news-img { height: 200px; overflow: hidden; border-bottom: 1px solid #f1f5f9; background: var(--bg-body); }
        .news-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
        .news-content { padding: 25px; }
        .news-date { font-size: 13px; color: var(--primary-purple); font-weight: bold; margin-bottom: 10px; display: block; }
        .news-content h3 { font-size: 18px; margin-bottom: 12px; line-height: 1.4; }
        .news-content p { font-size: 14px; color: var(--text-gray); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

        /* ================= 滚动浮现动效 ================= */
        .fade-up { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease-out, transform 0.8s ease-out; }
        .fade-up.visible { opacity: 1; transform: translateY(0); }

    /* ================= 美化 Footer ================= */
    .unified-footer {
        background: linear-gradient(135deg, rgba(124,58,237,0.95) 0%, rgba(59,130,246,0.95) 50%, rgba(99,102,241,0.95) 100%);
        backdrop-filter: blur(20px);
        color: white;
        margin-top: 20px;
        padding: 15px;
        position: relative;
        overflow: hidden;

    }

    .unified-footer::before {
        content: '';
        position: absolute;
        top: -50%; right: -20%;
        width: 400px; height: 400px;
        background: rgba(255,255,255,0.05);
        border-radius: 50%;
        animation: float 6s ease-in-out infinite;
    }

    @keyframes float {
        0%, 100% { transform: translateY(0px); }
        50% { transform: translateY(-20px); }
    }

    .footer-content {
        display: grid;
        grid-template-columns: 2fr 1fr 1fr;
        gap: 40px;
    }

    .footer-brand .logo {
        font-size: 28px;
        font-weight: 800;
        background: linear-gradient(135deg, #ffffff 0%, rgba(255,255,255,0.8) 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        margin-bottom: 15px;
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .footer-brand p {
        font-size: 14px;
        opacity: 0.9;
        line-height: 1.6;
    }

    .link-group h4 {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 20px;
        position: relative;
    }

    .link-group h4::after {
        content: '';
        position: absolute;
        bottom: -5px;
        left: 0;
        width: 30px;
        height: 3px;
        background: #ffffff;
        border-radius: 2px;
    }

    .link-group a {
        display: block;
        color: rgba(255,255,255,0.8);
        padding: 8px 0;
        transition: all 0.3s ease;
        position: relative;
    }

    .link-group a:hover {
        color: white;
        transform: translateX(8px);
    }

    .link-group a::before {
        content: '';
        position: absolute;
        left: 0; top: 50%;
        width: 0;
        height: 2px;
        background: #ffffff;
        transition: width 0.3s ease;
    }

    .link-group a:hover::before {
        width: 8px;
    }

   
.footer-bottom {
        padding-top: 5px;
    }

    .footer-bottom p {
        font-size: 13px;
        opacity: 0.8;
        text-align: center;
        margin: 0;
    }
    /* ================= 商品图片  ================= */
    .product-img img{ width:160px; height:160px}
    .main-img  img{width:390px;height:390px}
    .ntro-image img{ width: 100%; height: 100%; object-fit: cover; display: block; }