/* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Helvetica Neue', Arial, sans-serif;
        }
        
        :root {
            --primary-color: #2c3e50;
            --secondary-color: #3498db;
            --accent-color: #e74c3c;
            --light-color: #ecf0f1;
            --dark-color: #2c3e50;
            --text-color: #333;
            --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        body {
            color: var(--text-color);
            line-height: 1.6;
        }
        
        a {
            text-decoration: none;
            color: var(--secondary-color);
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        /* 顶部栏样式 */
        .top-bar {
            background: #64B5F6;
            color: white;
            padding: 8px 0;
            font-size: 14px;
            position: relative;
            z-index: 1001;
        }
        
        .top-bar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .top-auth {
            display: flex;
            align-items: center;
        }
        
        .top-auth a {
            color: white;
            margin-right: 15px;
            padding: 5px 10px;
        }
        
        .post-info {
            background: var(--accent-color);
            border-radius: 3px;
            padding: 5px 15px;
            color: white;
        }
        
        /* 头部样式 */
        .main-header {
            background: white;
            box-shadow: var(--shadow);
            position: relative;
            z-index: 1000;
        }
        
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo-area {
            display: flex;
            align-items: center;
        }
        
        .logo {
            width: 200px;
            height: 80px;
            background: var(--secondary-color);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-weight: bold;
            margin-right: 15px;
        }
        
        .logo-text h1 {
            font-size: 22px;
            color: var(--primary-color);
        }
        
        .logo-text p {
            font-size: 12px;
            color: #777;
        }
        
        .search-area {
            flex: 1;
            max-width: 500px;
            margin: 0 20px;
        }
        
        .search-form {
            display: flex;
        }
        
        .search-form input {
            flex: 1;
            padding: 10px 15px;
            border: 2px solid var(--secondary-color);
            border-radius: 4px 0 0 4px;
            font-size: 16px;
        }
        
        .search-form button {
            background: var(--secondary-color);
            color: white;
            border: none;
            padding: 0 20px;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
        }
        
        .auth-buttons {
            display: flex;
        }
        
        .auth-buttons a {
            padding: 8px 15px;
            margin-left: 10px;
            border-radius: 4px;
            font-weight: 500;
        }
        
        .login-btn {
            color: var(--secondary-color);
            border: 1px solid var(--secondary-color);
        }
        
        .register-btn {
            background: var(--secondary-color);
            color: white;
        }
        
        /* 导航栏样式 */
        nav {
            background: #c0392b;
            position: relative;
            z-index: 999;
        }
        
        .nav-container {
            overflow-x: auto;
            white-space: nowrap;
            padding: 0 15px;
        }
        
        .nav-container::-webkit-scrollbar {
            display: none;
        }
        
        .nav-menu {
            display: inline-flex;
            list-style: none;
        }
        
        .nav-menu li {
            padding: 15px 20px;
        }
        
        .nav-menu a {
            color: white;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        .nav-menu a:hover {
            color: var(--accent-color);
        }
        
        /* 固定导航栏 */
        .sticky {
            position: fixed;
            top: 0;
            width: 100%;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }
        
        /* 网站简介 */
       .sticky {
    position: fixed;
    top: 0;
    width: 100%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

/* 缃戠珯绠€浠� */
.intro {
    background: 
    color: white;
    padding: 20px 0;
    text-align: left;
    margin-bottom: 30px;
}

.intro h2 {
    font-size: 28px;
    margin-bottom: 15px;
}

.intro p {
    max-width: 100%px;
    margin: 0 auto;
    font-size: 16px;
}

  /* 导航栏样式 */
      navx {
    background: var(--primary-color);
    position: relative;
    z-index: 999;
}

.navx-container {
    overflow-x: auto;
    white-space: nowrap;
    padding: 0 15px;
}

.navx-container::-webkit-scrollbar {
    display: none;
}

.navx-menu {
    display: inline-flex;
    list-style: none;
}

.navx-menu li {
    padding: 15px 10px;
}

.navx-menu a {
    color: white;
    font-weight: 500;
    transition: color 0.3s;
}

.navx-menu a:hover {
    color: var(--accent-color);
}

        /* 信息栏 */
        .info-section {
            display: flex;
            gap: 20px;
            margin-bottom: 40px;
        }
        
        .supply-list, .purchase-list {
            flex: 1;
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        
        .section-title {
            font-size: 18px;
            color: var(--primary-color);
            padding-bottom: 10px;
            margin-bottom: 15px;
            border-bottom: 2px solid var(--secondary-color);
        }
        
        .info-item {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
        }
        
        .info-item:last-child {
            border-bottom: none;
        }
        
        .video-column {
            flex: 1.5;
            border-radius: 8px;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow);
            background: white;
            display: flex;
            flex-direction: column;
        }
        
        .video-container {
            flex: 1;
            background: #333;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
        }
        
        .video-placeholder {
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            width: 450px;
            height: 250px;
        }
        
        .video-placeholder i {
            font-size: 48px;
            margin-bottom: 15px;
            display: block;
        }
        
        /* 产品展示 */
        .products {
            margin-bottom: 40px;
        }
        
        .products-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 15px;
        }
        
        .product-card {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: transform 0.3s;
        }
        
        .product-card:hover {
            transform: translateY(-5px);
        }
        
        .product-img {
            height: 120px;
            background: #ddd;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #777;
        }
        
        .product-info {
            padding: 10px;
        }
        
        .product-title {
            font-size: 14px;
            margin-bottom: 5px;
        }
        
        .product-price {
            color: var(--accent-color);
            font-weight: bold;
        }
        
        /* 展会信息栏 */
        .exhibition {
            margin-bottom: 40px;
        }
        
        .exhibition-section {
            display: flex;
            gap: 20px;
        }
        
        .exhibition-info, .international-exhibition {
            flex: 1;
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        
        .exhibition-carousel, .logistics-carousel {
            flex: 1.5;
            border-radius: 8px;
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow);
            background: white;
            display: flex;
            flex-direction: column;
        }
        
        .carousel-container {
            flex: 1;
            position: relative;
            overflow: hidden;
        }
        
        .carousel-slides {
            display: flex;
            height: 100%;
            transition: transform 0.5s ease;
        }
        
        .carousel-slide {
            min-width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .slide-img {
            background: #ddd;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #777;
            width: 450px;
            height: 250px;
        }
        
        .slide-title {
            padding: 10px;
            text-align: center;
            background: #f5f5f5;
            width: 100%;
        }
        
        .carousel-controls {
            position: absolute;
            top: 50%;
            width: 100%;
            display: flex;
            justify-content: space-between;
            transform: translateY(-50%);
            padding: 0 10px;
        }
        
        .carousel-prev, .carousel-next {
            background: rgba(0,0,0,0.5);
            color: white;
            border: none;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            cursor: pointer;
        }
        
        .carousel-indicators {
            position: absolute;
            bottom: 10px;
            width: 100%;
            display: flex;
            justify-content: center;
            gap: 5px;
        }
        
        .indicator {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255,255,255,0.5);
            cursor: pointer;
        }
        
        .indicator.active {
            background: white;
        }
        
        /* 物流信息栏 */
        .logistics {
            margin-bottom: 40px;
        }
        
        .logistics-section {
            display: flex;
            gap: 20px;
        }
        
        .logistics-info, .freight-info {
            flex: 1;
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        
        /* 综合信息 */
        .comprehensive {
            display: flex;
            gap: 20px;
            margin-bottom: 40px;
        }
        
        .companies, .technology, .news {
            flex: 1;
            background: white;
            padding: 20px;
            border-radius: 8px;
            box-shadow: var(--shadow);
        }
        
        .scroll-list {
            height: 300px;
            overflow: hidden;
            position: relative;
        }
        
        .scroll-item {
            padding: 10px 0;
            border-bottom: 1px solid #eee;
        }
        
        /* 页脚 */
        footer {
            background: var(--primary-color);
            color: white;
            padding: 40px 0 20px;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        
        .footer-links a {
            color: white;
            margin: 0 15px;
            padding: 5px 0;
        }
        
        .footer-contact, .footer-address {
            text-align: center;
            margin-bottom: 15px;
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .products-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            
            .video-placeholder,
            .slide-img {
                width: 100% !important;
                max-width: 450px;
            }
        }
        
        @media (max-width: 992px) {
            .header-top {
                flex-direction: column;
                align-items: stretch;
            }
            
            .logo-area {
                margin-bottom: 15px;
            }
            
            .search-area {
                max-width: 100%;
                margin: 0 0 15px;
            }
            
            .auth-buttons {
                justify-content: center;
            }
            
            .info-section, .comprehensive, .logistics-section, .exhibition-section {
                flex-direction: column;
            }
            
            .video-column, .exhibition-carousel, .logistics-carousel {
                height: auto;
                order: -1;
                margin-bottom: 20px;
            }
            
            .products-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            
            .video-placeholder,
            .slide-img {
                width: 100% !important;
                height: 200px !important;
            }
        }
        
        @media (max-width: 768px) {
            .products-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .nav-menu li {
                padding: 15px 10px;
            }
            
            .video-placeholder,
            .slide-img {
                height: 180px !important;
            }
        }
        
        @media (max-width: 480px) {
            .products-grid {
                grid-template-columns: 1fr;
            }
            
            .logo-text h1 {
                font-size: 18px;
            }
            
            .video-placeholder,
            .slide-img {
                height: 150px !important;
            }
            
            .top-bar-content {
                flex-direction: column;
                gap: 10px;
            }
        }