:root {
            --primary-color: #00a95c;
            --primary-dark: #008d4c;
            --primary-light: rgba(0, 169, 92, 0.1);
            --secondary-color: #ff6a00;
            --accent-color: #4a90e2;
            --text-dark: #222;
            --text-medium: #555;
            --text-light: #777;
            --white: #fff;
            --gray-light: #f8f9fa;
            --gray-medium: #eaeaea;
            --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 15px 40px rgba(0, 0, 0, 0.15);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        
        html {
            scroll-behavior: smooth;
            overflow-x: hidden;
        }
        
        body {
            background-color: var(--white);
            color: var(--text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        
        /* 导航栏 - 添加导航链接 */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            z-index: 1000;
            padding: 18px 0;
            transition: var(--transition);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }
        
        .navbar.scrolled {
            padding: 12px 0;
            box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
        }
        
        .nav-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            height: 36px;
            transition: var(--transition);
            filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
        }
        
        .logo:hover {
            transform: scale(1.05);
        }
        
        .nav-links {
            display: flex;
            gap: 35px;
            align-items: center;
        }
        
        .nav-link {
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 16px;
            position: relative;
            padding: 8px 0;
            transition: var(--transition);
        }
        
        .nav-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
            transition: var(--transition);
        }
        
        .nav-link:hover {
            color: var(--primary-color);
        }
        
        .nav-link:hover::after {
            width: 100%;
        }
        
        .nav-cta {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            color: var(--white);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            box-shadow: 0 6px 20px rgba(0, 169, 92, 0.25);
            position: relative;
            overflow: hidden;
        }
        
        .nav-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: var(--transition);
        }
        
        .nav-cta:hover::before {
            left: 100%;
        }
        
        .nav-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 169, 92, 0.35);
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--text-dark);
            cursor: pointer;
        }
        
        /* 横幅区域 - 图片更小，添加软件属性 */
        .banner {
            padding: 150px 0 70px;
            background: linear-gradient(135deg, #e8f7f0 0%, #f0f9ff 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        
        .banner-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0.1;
            background-image: 
                radial-gradient(circle at 20% 30%, rgba(0, 169, 92, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(255, 106, 0, 0.1) 0%, transparent 50%);
        }
        
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }
        
        .banner-text {
            margin-bottom: 40px;
            animation: fadeInDown 0.8s ease-out;
        }
        
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .banner-title {
            font-size: 3.2rem;
            margin-bottom: 15px;
            line-height: 1.2;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            font-weight: 800;
            text-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
        }
        
        .banner-subtitle {
            font-size: 1.2rem;
            color: var(--text-medium);
            max-width: 700px;
            margin: 0 auto;
        }
        
        .banner-image {
            margin-bottom: 35px;
            animation: float 6s ease-in-out infinite;
        }
        
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-8px); }
            100% { transform: translateY(0px); }
        }
        
        .banner-image img {
            max-width: 500px;
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
        }
        
        .banner-image img:hover {
            transform: scale(1.02);
        }
        
        .download-section {
            margin-bottom: 25px;
        }
        
        .download-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            color: var(--white);
            padding: 18px 36px;
            border-radius: 50px;
            font-weight: 700;
            text-decoration: none;
            font-size: 1.2rem;
            transition: var(--transition);
            box-shadow: 0 10px 30px rgba(0, 169, 92, 0.3);
            position: relative;
            overflow: hidden;
            animation: pulse 2s infinite;
            margin-bottom: 25px;
        }
        
        @keyframes pulse {
            0% { box-shadow: 0 10px 30px rgba(0, 169, 92, 0.3); }
            50% { box-shadow: 0 10px 40px rgba(0, 169, 92, 0.5); }
            100% { box-shadow: 0 10px 30px rgba(0, 169, 92, 0.3); }
        }
        
        .download-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: var(--transition);
        }
        
        .download-btn:hover::before {
            left: 100%;
        }
        
        .download-btn:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 169, 92, 0.5);
        }
        
        .download-icon {
            margin-right: 10px;
            font-size: 1.3rem;
        }
        
        .software-properties {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        
        .property {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            color: var(--text-medium);
            font-size: 0.95rem;
        }
        
        .property-label {
            font-weight: 600;
            color: var(--text-dark);
            font-size: 1rem;
        }
        
        .property-value {
            color: var(--text-medium);
        }
        
        /* 交互式解决方案 - 一行两个 */
        .interactive-solutions {
            padding: 100px 0;
            background: var(--white);
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            color: var(--text-dark);
            font-weight: 700;
            position: relative;
            display: inline-block;
        }
        
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }
        
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto;
        }
        
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 25px;
            max-width: 1100px;
            margin: 0 auto;
        }
        
        .solution-item {
            background: var(--white);
            border-radius: var(--radius-md);
            padding: 25px 30px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
            border-left: 5px solid transparent;
            height: 100%;
        }
        
        .solution-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-left-color: var(--primary-color);
        }
        
        .solution-item:nth-child(2n):hover {
            border-left-color: var(--secondary-color);
        }
        
        .solution-item:nth-child(3n):hover {
            border-left-color: var(--accent-color);
        }
        
        .solution-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 15px;
        }
        
        .solution-title {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .solution-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        
        .solution-icon img {
            width: 30px;
            height: 30px;
        }
        
        .solution-name h3 {
            font-size: 1.3rem;
            color: var(--text-dark);
        }
        
        .solution-name p {
            font-size: 0.9rem;
            color: var(--text-light);
        }
        
        .solution-toggle {
            color: var(--primary-color);
            font-size: 1.5rem;
            transition: var(--transition);
        }
        
        .solution-item.active .solution-toggle {
            transform: rotate(45deg);
        }
        
        .solution-details {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            color: var(--text-light);
            line-height: 1.7;
        }
        
        .solution-item.active .solution-details {
            max-height: 500px;
            margin-top: 15px;
        }
        
        .solution-features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-top: 20px;
        }
        
        .solution-feature {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
        }
        
        .solution-feature::before {
            content: '✓';
            color: var(--primary-color);
            font-weight: bold;
        }
        
        /* 安全防护体系 - 标签切换方式 */
        .security-system {
            padding: 100px 0;
            background: linear-gradient(135deg, #f8fdfa 0%, #f5faff 100%);
            position: relative;
            overflow: hidden;
        }
        
        .security-system::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(0, 169, 92, 0.05) 0%, transparent 30%),
                radial-gradient(circle at 90% 80%, rgba(255, 106, 0, 0.05) 0%, transparent 30%);
        }
        
        .security-tabs {
            display: flex;
            gap: 10px;
            margin-bottom: 40px;
            flex-wrap: wrap;
            justify-content: center;
            position: relative;
            z-index: 2;
        }
        
        .tab-btn {
            padding: 12px 25px;
            background: var(--white);
            border: none;
            border-radius: 50px;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        
        .tab-btn.active {
            background: var(--primary-color);
            color: var(--white);
        }
        
        .tab-btn:hover:not(.active) {
            background: rgba(0, 169, 92, 0.1);
            color: var(--primary-color);
        }
        
        .tab-content {
            display: none;
            animation: fadeIn 0.5s ease;
            position: relative;
            z-index: 2;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .tab-content.active {
            display: block;
        }
        
        .security-feature {
            display: flex;
            align-items: center;
            gap: 50px;
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-md);
        }
        
        .security-text {
            flex: 1;
        }
        
        .security-image {
            flex: 1;
            text-align: center;
        }
        
        .security-image img {
            max-width: 100%;
            border-radius: var(--radius-md);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .security-text h3 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: var(--text-dark);
        }
        
        .security-text p {
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 25px;
        }
        
        .security-features-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            margin-bottom: 25px;
        }
        
        .security-feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .security-feature-icon {
            width: 24px;
            height: 24px;
            background: rgba(0, 169, 92, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 0.8rem;
        }
        
        .security-feature-text {
            font-size: 0.95rem;
            color: var(--text-light);
        }
        
        .security-cta {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            color: var(--white);
            padding: 14px 28px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            box-shadow: 0 8px 25px rgba(0, 169, 92, 0.25);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .security-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: var(--transition);
        }
        
        .security-cta:hover::before {
            left: 100%;
        }
        
        .security-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 35px rgba(0, 169, 92, 0.35);
        }
        
        /* 统计数据 */
        .stats {
            padding: 80px 0;
            background: var(--white);
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
        }
        
        .stat-item {
            text-align: center;
            padding: 40px 20px;
            background: linear-gradient(135deg, var(--primary-light) 0%, rgba(74, 144, 226, 0.05) 100%);
            border-radius: var(--radius-lg);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .stat-item:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
        }
        
        .stat-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }
        
        .stat-number {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .stat-unit {
            font-size: 1.5rem;
            margin-left: 5px;
            color: var(--text-light);
        }
        
        .stat-label {
            color: var(--text-medium);
            font-size: 1.1rem;
            font-weight: 500;
        }
        
        /* FAQ */
        .faq {
            padding: 80px 0;
            background: linear-gradient(135deg, #f8f9fa 0%, #f0f7ff 100%);
        }
        
        .faq-container {
            max-width: 900px;
            margin: 0 auto;
        }
        
        .faq-item {
            background: var(--white);
            border-radius: var(--radius-md);
            margin-bottom: 20px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        
        .faq-question {
            padding: 25px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-dark);
            transition: var(--transition);
            background: var(--white);
        }
        
        .faq-question:hover {
            background: var(--primary-light);
        }
        
        .faq-icon {
            color: var(--primary-color);
            font-size: 1.2rem;
            transition: var(--transition);
        }
        
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            color: var(--secondary-color);
        }
        
        .faq-answer {
            padding: 0 30px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--text-light);
            line-height: 1.7;
        }
        
        .faq-item.active .faq-answer {
            padding: 0 30px 30px;
            max-height: 500px;
        }
        
        /* 页脚 - 简化版 */
        .footer {
            background: #1a1a1a;
            color: var(--white);
            padding: 60px 0 30px;
            position: relative;
            overflow: hidden;
        }
        
        .footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }
        
        .footer-content {
            text-align: center;
            position: relative;
            z-index: 2;
        }
        
        .footer-logo {
            height: 40px;
            margin-bottom: 25px;
            filter: brightness(0) invert(1);
        }
        
        .footer-description {
            font-size: 1.1rem;
            color: #aaa;
            max-width: 700px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        
        .footer-bottom {
            text-align: center;
            color: #777;
            font-size: 0.9rem;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        /* 响应式设计 */
        @media (max-width: 1100px) {
            .banner-title {
                font-size: 2.8rem;
            }
            
            .section-title h2 {
                font-size: 2.3rem;
            }
        }
        
        @media (max-width: 900px) {
            .banner {
                padding: 140px 0 70px;
            }
            
            .banner-title {
                font-size: 2.5rem;
            }
            
            .banner-subtitle {
                font-size: 1.1rem;
            }
            
            .banner-image img {
                max-width: 450px;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .solutions-grid {
                grid-template-columns: 1fr;
            }
            
            .security-feature {
                flex-direction: column;
                gap: 30px;
            }
            
            .security-image {
                order: -1;
                width: 100%;
            }
            
            .nav-links {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .mobile-nav-links {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(255, 255, 255, 0.98);
                backdrop-filter: blur(12px);
                padding: 20px;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
                gap: 15px;
                z-index: 1000;
            }
            
            .mobile-nav-links.active {
                display: flex;
            }
        }
        
        @media (max-width: 768px) {
            .nav-cta {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            
            .banner-title {
                font-size: 2.2rem;
            }
            
            .banner-subtitle {
                font-size: 1rem;
            }
            
            .banner-image img {
                max-width: 400px;
            }
            
            .download-btn {
                padding: 16px 32px;
                font-size: 1.1rem;
            }
            
            .software-properties {
                gap: 25px;
            }
            
            .property {
                font-size: 0.9rem;
            }
            
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .solution-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            
            .solution-title {
                width: 100%;
            }
            
            .solution-toggle {
                align-self: flex-end;
            }
            
            .solution-features {
                grid-template-columns: 1fr;
            }
            
            .security-features-list {
                grid-template-columns: 1fr;
            }
            
            .security-feature {
                padding: 30px 20px;
            }
            
            .tab-btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
        }
        
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            
            .banner-image img {
                max-width: 350px;
            }
            
            .software-properties {
                flex-direction: column;
                gap: 20px;
            }
            
            .footer-description {
                font-size: 1rem;
            }
        }