* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary: #2563eb;
            --primary-dark: #1e40af;
            --secondary: #10b981;
            --accent: #f59e0b;
            --dark: #1f2937;
            --darker: #111827;
            --light: #f9fafb;
            --border: #e5e7eb;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            line-height: 1.7;
            color: #374151;
            background: #fff;
        }
        
        /* 顶部公告栏 */
        .announcement {
            background: linear-gradient(90deg, var(--primary), var(--primary-dark));
            color: #fff;
            text-align: center;
            padding: 0.8rem 1rem;
            font-size: 0.95rem;
            font-weight: 500;
        }
        
        .announcement a {
            color: #fbbf24;
            text-decoration: none;
            font-weight: 700;
            border-bottom: 2px solid #fbbf24;
        }
        
        /* 导航栏 */
        .navbar {
            background: #fff;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 999;
        }
        
        .nav-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .brand {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--primary);
            text-decoration: none;
            letter-spacing: -0.5px;
        }
        
        .nav-menu {
            display: none;
            list-style: none;
        }
        
        .nav-menu.active {
            display: block;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background: #fff;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            padding: 1rem 0;
        }
        
        .nav-menu li {
            margin: 0;
        }
        
        .nav-menu a {
            display: block;
            padding: 1rem 2rem;
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }
        
        .nav-menu a:hover {
            background: var(--light);
            color: var(--primary);
            padding-left: 2.5rem;
        }
        
        .menu-btn {
            display: block;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
        }
        
        .menu-btn span {
            display: block;
            width: 28px;
            height: 3px;
            background: var(--dark);
            margin: 5px 0;
            transition: 0.3s;
            border-radius: 3px;
        }
        
        /* 英雄横幅 */
        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
            color: #fff;
            padding: 4rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('https://sxygdl.com/lunbotu/7.webp') center/cover;
            opacity: 0.15;
            z-index: 0;
        }
        
        .hero-content {
            max-width: 900px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        
        .hero h1 {
            font-size: 2.5rem;
            font-weight: 900;
            margin-bottom: 1.5rem;
            line-height: 1.2;
            text-shadow: 0 2px 10px rgba(0,0,0,0.2);
        }
        
        .hero p {
            font-size: 1.25rem;
            margin-bottom: 2.5rem;
            opacity: 0.95;
        }
        
        .hero-buttons {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 400px;
            margin: 0 auto;
        }
        
        .btn {
            padding: 1rem 2rem;
            font-size: 1.1rem;
            font-weight: 700;
            text-decoration: none;
            border-radius: 8px;
            transition: all 0.3s;
            display: inline-block;
            text-align: center;
        }
        
        .btn-primary {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
        }
        
        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid #fff;
        }
        
        .btn-outline:hover {
            background: #fff;
            color: var(--primary);
        }
        
        /* 容器 */
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
        }
        
        /* 区块标题 */
        .section {
            padding: 5rem 2rem;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 3rem;
        }
        
        .section-title {
            font-size: 2.5rem;
            font-weight: 900;
            color: var(--dark);
            margin-bottom: 1rem;
        }
        
        .section-desc {
            font-size: 1.15rem;
            color: #6b7280;
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 信息卡片网格 */
        .info-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 3rem;
        }
        
        .info-card {
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0,0,0,0.07);
            transition: all 0.3s;
            border: 1px solid var(--border);
        }
        
        .info-card:hover {
            box-shadow: 0 10px 30px rgba(0,0,0,0.12);
            transform: translateY(-5px);
        }
        
        .card-img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }
        
        .card-body {
            padding: 2rem;
        }
        
        .card-title {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--dark);
            margin-bottom: 1rem;
        }
        
        .card-text {
            color: #4b5563;
            line-height: 1.8;
            margin-bottom: 1.5rem;
        }
        
        .card-list {
            list-style: none;
            margin-bottom: 1.5rem;
        }
        
        .card-list li {
            padding: 0.6rem 0;
            padding-left: 1.8rem;
            position: relative;
            color: #374151;
        }
        
        .card-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--secondary);
            font-weight: 900;
            font-size: 1.2rem;
        }
        
        .card-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            transition: 0.3s;
        }
        
        .card-link:hover {
            color: var(--primary-dark);
            gap: 0.5rem;
        }
        
        /* 特色区块 */
        .features {
            background: var(--light);
        }
        
        .feature-box {
            background: #fff;
            padding: 2rem;
            border-radius: 12px;
            text-align: center;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
            transition: 0.3s;
            height: 100%;
        }
        
        .feature-box:hover {
            box-shadow: 0 8px 20px rgba(0,0,0,0.1);
        }
        
        .feature-icon {
            font-size: 3rem;
            margin-bottom: 1rem;
        }
        
        .feature-title {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 0.8rem;
        }
        
        .feature-desc {
            color: #6b7280;
            line-height: 1.7;
        }
        
        /* 产品展示 */
        .products {
            background: #fff;
        }
        
        .product-item {
            background: linear-gradient(135deg, #f9fafb 0%, #fff 100%);
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            margin-bottom: 2rem;
            border: 2px solid var(--border);
        }
        
        .product-banner {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            padding: 1.5rem 2rem;
            text-align: center;
        }
        
        .product-banner h3 {
            font-size: 1.8rem;
            font-weight: 900;
            margin-bottom: 0.5rem;
        }
        
        .product-tag {
            display: inline-block;
            background: rgba(255,255,255,0.2);
            padding: 0.4rem 1rem;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
        }
        
        .product-image-box {
            padding: 2rem;
            text-align: center;
            background: #fff;
        }
        
        .product-image-box img {
            max-width: 100%;
            height: 280px;
            object-fit: contain;
        }
        
        .product-info {
            padding: 2rem;
        }
        
        .product-desc {
            font-size: 1.05rem;
            color: #4b5563;
            margin-bottom: 1.5rem;
            line-height: 1.8;
        }
        
        .product-features {
            background: #f9fafb;
            border-radius: 12px;
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }
        
        .product-features h4 {
            color: var(--dark);
            margin-bottom: 1rem;
            font-size: 1.1rem;
        }
        
        .product-features ul {
            list-style: none;
        }
        
        .product-features li {
            padding: 0.5rem 0;
            color: #374151;
        }
        
        .product-actions {
            display: flex;
            gap: 1rem;
        }
        
        .btn-buy {
            flex: 1;
            background: var(--primary);
            color: #fff;
        }
        
        .btn-buy:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }
        
        .btn-consult {
            flex: 1;
            background: var(--secondary);
            color: #fff;
        }
        
        .btn-consult:hover {
            background: #059669;
            transform: translateY(-2px);
        }
        
        /* 统计数据 */
        .stats {
            background: var(--dark);
            color: #fff;
            text-align: center;
            padding: 4rem 2rem;
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .stat-box {
            padding: 2rem;
        }
        
        .stat-number {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--accent);
            margin-bottom: 0.5rem;
        }
        
        .stat-label {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        
        /* FAQ */
        .faq {
            background: var(--light);
        }
        
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }
        
        .faq-box {
            background: #fff;
            border-radius: 12px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            box-shadow: 0 2px 8px rgba(0,0,0,0.06);
            border-left: 4px solid var(--primary);
        }
        
        .faq-q {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 1rem;
        }
        
        .faq-a {
            color: #4b5563;
            line-height: 1.9;
        }
        
        /* CTA区块 */
        .cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            text-align: center;
            padding: 5rem 2rem;
        }
        
        .cta h2 {
            font-size: 2.5rem;
            font-weight: 900;
            margin-bottom: 1rem;
        }
        
        .cta p {
            font-size: 1.2rem;
            margin-bottom: 2rem;
            opacity: 0.95;
        }
        
        .cta .btn {
            background: #fff;
            color: var(--primary);
            font-size: 1.2rem;
            padding: 1.2rem 3rem;
        }
        
        .cta .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
        }
        
        /* 合作伙伴 */
        .partners {
            padding: 3rem 2rem;
            background: #fff;
        }
        
        .partners h3 {
            text-align: center;
            color: var(--dark);
            margin-bottom: 2rem;
            font-size: 1.5rem;
        }
        
        .partner-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .partner-link {
            display: block;
            padding: 1rem 1.5rem;
            background: var(--light);
            border-radius: 8px;
            text-align: center;
            text-decoration: none;
            color: var(--dark);
            font-weight: 600;
            transition: 0.3s;
        }
        
        .partner-link:hover {
            background: var(--primary);
            color: #fff;
            transform: translateX(5px);
        }
        
        /* 页脚 */
        footer {
            background: var(--darker);
            color: #9ca3af;
            padding: 3rem 2rem 2rem;
        }
        
        .footer-content {
            max-width: 1280px;
            margin: 0 auto;
            text-align: center;
        }
        
        .footer-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .footer-nav a {
            color: #9ca3af;
            text-decoration: none;
            transition: 0.3s;
        }
        
        .footer-nav a:hover {
            color: #fff;
        }
        
        .footer-info {
            padding-top: 2rem;
            border-top: 1px solid #374151;
            font-size: 0.9rem;
        }
        
        /* 响应式 */
        @media (min-width: 768px) {
            .nav-menu {
                display: flex;
                position: static;
                box-shadow: none;
                padding: 0;
                background: transparent;
            }
            
            .nav-menu li {
                margin-left: 2rem;
            }
            
            .nav-menu a {
                padding: 0.5rem 1rem;
            }
            
            .nav-menu a:hover {
                padding-left: 1rem;
                background: transparent;
            }
            
            .menu-btn {
                display: none;
            }
            
            .hero h1 {
                font-size: 3.5rem;
            }
            
            .hero-buttons {
                flex-direction: row;
                justify-content: center;
                max-width: none;
            }
            
            .info-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .stats-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            
            .partner-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        
        @media (min-width: 1024px) {
            .info-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            
            .hero h1 {
                font-size: 4rem;
            }
            
            .partner-grid {
                grid-template-columns: repeat(5, 1fr);
            }
        }