* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #f1f5f9;
            line-height: 1.6;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
         /* 头部样式 */
        header {
            background: linear-gradient(90deg, #1e293b 0%, #0f172a 100%);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 50px;
            margin-right: 15px;
        }
        
        .logo h1 {
            font-size: 24px;
            background: linear-gradient(45deg, #3b82f6, #8b5cf6);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            font-weight: 700;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 30px;
        }
        
        nav ul li a {
            text-decoration: none;
            color: #cbd5e1;
            font-weight: 500;
            font-size: 16px;
            transition: color 0.3s;
            position: relative;
        }
        
        nav ul li a:hover {
            color: #60a5fa;
        }
        
        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: #60a5fa;
            transition: width 0.3s;
        }
        
        nav ul li a:hover::after {
            width: 100%;
        }
        
        
        /* 主视觉区域 */
        .hero {
            position: relative;
            height: 80vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            overflow: hidden;
            padding: 20px;
        }
        
        .video-container {
            position: relative;
            width: 90%;
            max-width: 900px;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
        }
        
        .video-container video {
            width: 100%;
            display: block;
        }
        
        .guarantee-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: linear-gradient(135deg, #3b82f6, #8b5cf6);
            color: white;
            padding: 12px 20px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 16px;
            box-shadow: 0 4px 15px rgba(59, 130, 246, 0.5);
            display: flex;
            align-items: center;
            gap: 8px;
            z-index: 10;
            animation: pulse 2s infinite;
        }
        
        .guarantee-badge i {
            font-size: 20px;
        }
        
        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.7); }
            70% { box-shadow: 0 0 0 12px rgba(59, 130, 246, 0); }
            100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
        }
        
        .hero-buttons {
            display: flex;
            gap: 30px;
            margin-top: 40px;
        }
        
        .btn {
            padding: 16px 40px;
            font-size: 18px;
            font-weight: 700;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
            color: white;
            border: none;
        }
        
        .btn-primary:hover {
            transform: translateY(-5px);
            box-shadow: 0 12px 25px rgba(59, 130, 246, 0.5);
        }
        
        .btn-secondary {
            background: rgba(30, 41, 59, 0.7);
            color: #cbd5e1;
            border: 2px solid #3b82f6;
        }
        
        .btn-secondary:hover {
            background: rgba(59, 130, 246, 0.2);
            transform: translateY(-5px);
        }
        
      /* 滚动公告 */
        .announcement {
            background: #1e293b;
            padding: 15px 0;
            border-bottom: 1px solid #334155;
            border-top: 1px solid #334155;
        }
        
        .announcement-content {
            display: flex;
            align-items: center;
        }
        
        .announcement h3 {
            min-width: 120px;
            font-size: 18px;
            color: #60a5fa;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .marquee {
            flex: 1;
            overflow: hidden;
            position: relative;
            height: 24px;
        }
        
        .marquee p {
            position: absolute;
            width: 100%;
            height: 100%;
            margin: 0;
            line-height: 24px;
            white-space: nowrap;
            animation: marquee 20s linear infinite;
        }
        
        @keyframes marquee {
            0%   { transform: translateX(100%); }
            100% { transform: translateX(-100%); }
        }
        
        /* 商品区域 */
        .products {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            font-size: 40px;
            margin-bottom: 60px;
            position: relative;
            color: #f8fafc;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #3b82f6, #8b5cf6);
            border-radius: 2px;
        }
        
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .product-card {
            background: rgba(30, 41, 59, 0.7);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
            transition: transform 0.3s ease;
            position: relative;
        }
        
        .product-card:hover {
            transform: translateY(-10px);
        }
        
        .product-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            padding: 6px 14px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 14px;
            z-index: 2;
        }
        
        .new-badge {
            background: linear-gradient(135deg, #10b981, #059669);
            color: white;
        }
        
        .hot-badge {
            background: linear-gradient(135deg, #ef4444, #b91c1c);
            color: white;
        }
        
        .product-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        
        .product-content {
            padding: 20px;
        }
        
        .product-title {
            font-size: 22px;
            margin-bottom: 10px;
            color: #f8fafc;
        }
        
        .product-desc {
            color: #cbd5e1;
            margin-bottom: 20px;
            min-height: 60px;
        }
        
        .product-buttons {
            display: flex;
            gap: 10px;
        }
        
        .btn-small {
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            text-align: center;
            width: 100%;
        }
        
        /* 文章区域 */
        .articles {
            padding: 60px 0;
            background: rgba(15, 23, 42, 0.5);
            border-radius: 20px;
            margin: 40px 0;
        }
        
        .article-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .article-section {
            background: rgba(30, 41, 59, 0.7);
            border-radius: 16px;
            padding: 25px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }
        
        .article-section h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: #60a5fa;
            padding-bottom: 15px;
            border-bottom: 2px solid #334155;
        }
        
        .article-list {
            list-style: none;
        }
        
        .article-item {
            padding: 15px 0;
            border-bottom: 1px solid #334155;
        }
        
        .article-item:last-child {
            border-bottom: none;
        }
        
        .article-item a {
            color: #f1f5f9;
            text-decoration: none;
            font-size: 18px;
            font-weight: 500;
            display: flex;
            align-items: center;
            transition: color 0.3s ease;
        }
        
        .article-item a:hover {
            color: #60a5fa;
        }
        
        .article-item a i {
            margin-right: 10px;
            color: #60a5fa;
        }
        
        /* 页脚样式 */
        footer {
            background: rgba(15, 23, 42, 0.9);
            padding: 60px 0 30px;
            margin-top: 80px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            font-size: 22px;
            color: #60a5fa;
            margin-bottom: 25px;
            position: relative;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 50px;
            height: 3px;
            background: #3b82f6;
            border-radius: 2px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 15px;
        }
        
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s ease;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .footer-links a:hover {
            color: #60a5fa;
        }
        
        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: rgba(59, 130, 246, 0.2);
            color: #60a5fa;
            border-radius: 50%;
            transition: all 0.3s ease;
        }
        
        .social-icons a:hover {
            background: #3b82f6;
            color: white;
            transform: translateY(-5px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #334155;
            color: #94a3b8;
            font-size: 16px;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            nav ul {
                gap: 15px;
            }
            
            nav a {
                font-size: 16px;
            }
            
            .hero {
                height: auto;
                padding: 40px 0;
            }
            
            .hero-buttons {
                flex-direction: column;
                gap: 15px;
                width: 100%;
                max-width: 300px;
            }
            
            .btn {
                width: 100%;
            }
            
            .announcement-label {
                margin-right: 15px;
                font-size: 14px;
            }
            
            .announcement-text {
                font-size: 16px;
            }
            
            .section-title {
                font-size: 32px;
            }
        }