* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        /* Navigation */
        .ztyy-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 70px;
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 60px;
            z-index: 1000;
            transition: all 0.3s ease;
        }
        
        .ztyy-navbar.scrolled {
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
        }
        
        .ztyy-logo {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .ztyy-logo img {
            height: 40px;
            width: auto;
        }
        
        .ztyy-nav-menu {
            display: flex;
            gap: 40px;
            list-style: none;
        }
        
        .ztyy-nav-menu a {
            color: #333;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s ease;
            position: relative;
        }
        
        .ztyy-nav-menu a:hover {
            color: #2196F3;
        }
        
        .ztyy-nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #2196F3, #00BCD4);
            transition: width 0.3s ease;
        }
        
        .ztyy-nav-menu a:hover::after {
            width: 100%;
        }
        
        .ztyy-nav-actions {
            display: flex;
            gap: 20px;
            align-items: center;
        }
        
        .ztyy-download-btn {
            background: linear-gradient(135deg, #2196F3, #00BCD4);
            color: white;
            padding: 10px 24px;
            border-radius: 25px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
        }
        
        .ztyy-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(33, 150, 243, 0.4);
        }
        
        /* Hero Section */
        .ztyy-hero-container {
            margin-top: 70px;
            position: relative;
            background: linear-gradient(135deg, #f5f7fa 0%, #e8f0ff 100%);
            overflow: hidden;
        }
        
        .ztyy-hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            padding: 80px 60px;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .ztyy-hero-text h1 {
            font-size: 48px;
            font-weight: 700;
            color: #1a1a1a;
            line-height: 1.3;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #2196F3, #00BCD4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .ztyy-hero-text p {
            font-size: 18px;
            color: #555;
            margin-bottom: 30px;
            line-height: 1.8;
        }
        
        .ztyy-hero-actions {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }
        
        .ztyy-primary-action {
            background: linear-gradient(135deg, #2196F3, #00BCD4);
            color: white;
            padding: 14px 36px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
            box-shadow: 0 6px 20px rgba(33, 150, 243, 0.35);
            border: none;
            cursor: pointer;
        }
        
        .ztyy-primary-action:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(33, 150, 243, 0.45);
        }
        
        .ztyy-secondary-action {
            color: #2196F3;
            padding: 14px 36px;
            border: 2px solid #2196F3;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
            transition: all 0.3s ease;
            background: white;
            cursor: pointer;
        }
        
        .ztyy-secondary-action:hover {
            background: rgba(33, 150, 243, 0.08);
            transform: translateY(-3px);
        }
        
        .ztyy-hero-image {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .ztyy-hero-image img {
            width: 100%;
            max-width: 500px;
            height: auto;
            object-fit: cover;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(33, 150, 243, 0.2);
            transition: transform 0.3s ease;
        }
        
        .ztyy-hero-image img:hover {
            transform: scale(1.03);
        }
        
        .ztyy-floating-element {
            position: absolute;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
            padding: 20px 30px;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            animation: float 6s ease-in-out infinite;
        }
        
        .ztyy-floating-1 {
            top: 20%;
            right: -50px;
            animation-delay: 0s;
        }
        
        .ztyy-floating-2 {
            bottom: 25%;
            left: -30px;
            animation-delay: 2s;
        }
        
        @keyframes float {
            0%, 100% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-15px);
            }
        }
        
        /* Stats Section */
        .ztyy-stats-section {
            background: linear-gradient(135deg, #2196F3, #00BCD4);
            padding: 60px;
            margin: 0;
        }
        
        .ztyy-stats-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            max-width: 1400px;
            margin: 0 auto;
            text-align: center;
        }
        
        .ztyy-stat-item {
            color: white;
        }
        
        .ztyy-stat-number {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        
        .ztyy-stat-unit {
            font-size: 24px;
            font-weight: 600;
            margin-right: 5px;
        }
        
        .ztyy-stat-label {
            font-size: 15px;
            opacity: 0.95;
            line-height: 1.5;
        }
        
        /* Features Section */
        .ztyy-features-section {
            padding: 100px 60px;
            background: #f8f9fb;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .ztyy-section-header {
            text-align: center;
            margin-bottom: 70px;
        }
        
        .ztyy-section-title {
            font-size: 40px;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .ztyy-section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, #2196F3, #00BCD4);
            border-radius: 2px;
        }
        
        .ztyy-section-subtitle {
            font-size: 18px;
            color: #666;
            margin-top: 30px;
        }
        
        .ztyy-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }
        
        .ztyy-feature-card {
            background: white;
            padding: 40px 30px;
            border-radius: 12px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            position: relative;
            overflow: hidden;
        }
        
        .ztyy-feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #2196F3, #00BCD4);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.3s ease;
        }
        
        .ztyy-feature-card:hover::before {
            transform: scaleX(1);
        }
        
        .ztyy-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 40px rgba(33, 150, 243, 0.15);
            border-color: rgba(33, 150, 243, 0.1);
        }
        
        .ztyy-feature-icon {
            font-size: 40px;
            margin-bottom: 20px;
            display: inline-block;
        }
        
        .ztyy-feature-title {
            font-size: 20px;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 12px;
        }
        
        .ztyy-feature-desc {
            font-size: 15px;
            color: #666;
            line-height: 1.7;
        }
        
        /* Products Section */
        .ztyy-products-section {
            padding: 100px 60px;
            background: white;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .ztyy-products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 30px;
        }
        
        .ztyy-product-card {
            background: linear-gradient(135deg, #f5f7fa, #e8f0ff);
            border-radius: 12px;
            padding: 40px;
            transition: all 0.3s ease;
            border-left: 4px solid #2196F3;
            position: relative;
        }
        
        .ztyy-product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 16px 48px rgba(33, 150, 243, 0.2);
        }
        
        .ztyy-product-highlight {
            display: inline-block;
            background: linear-gradient(135deg, #2196F3, #00BCD4);
            color: white;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 15px;
        }
        
        .ztyy-product-name {
            font-size: 22px;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 12px;
        }
        
        .ztyy-product-desc {
            font-size: 15px;
            color: #666;
            line-height: 1.8;
        }
        
        /* Scenarios Section */
        .ztyy-scenarios-section {
            padding: 100px 60px;
            background: #f8f9fb;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .ztyy-scenarios-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }
        
        .ztyy-scenario-item {
            background: white;
            padding: 35px;
            border-radius: 10px;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        
        .ztyy-scenario-item:hover {
            box-shadow: 0 10px 35px rgba(33, 150, 243, 0.12);
            transform: translateY(-5px);
        }
        
        .ztyy-scenario-icon {
            font-size: 36px;
            margin-bottom: 15px;
        }
        
        .ztyy-scenario-title {
            font-size: 18px;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 10px;
        }
        
        .ztyy-scenario-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.7;
        }
        
        /* Tech Advantages Section */
        .ztyy-tech-section {
            padding: 100px 60px;
            background: white;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .ztyy-tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .ztyy-tech-card {
            padding: 40px;
            background: linear-gradient(135deg, rgba(33, 150, 243, 0.05), rgba(0, 188, 212, 0.05));
            border: 1px solid rgba(33, 150, 243, 0.15);
            border-radius: 12px;
            transition: all 0.3s ease;
        }
        
        .ztyy-tech-card:hover {
            border-color: rgba(33, 150, 243, 0.4);
            box-shadow: 0 12px 40px rgba(33, 150, 243, 0.1);
        }
        
        .ztyy-tech-title {
            font-size: 20px;
            font-weight: 700;
            color: #2196F3;
            margin-bottom: 15px;
        }
        
        .ztyy-tech-desc {
            font-size: 15px;
            color: #666;
            line-height: 1.8;
        }
        
        /* Testimonials Section */
        .ztyy-testimonials-section {
            padding: 100px 60px;
            background: linear-gradient(135deg, #f5f7fa 0%, #e8f0ff 100%);
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .ztyy-testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 25px;
        }
        
        .ztyy-testimonial-card {
            background: white;
            padding: 30px;
            border-radius: 12px;
            transition: all 0.3s ease;
            border-left: 4px solid #2196F3;
        }
        
        .ztyy-testimonial-card:hover {
            box-shadow: 0 12px 40px rgba(33, 150, 243, 0.15);
            transform: translateY(-5px);
        }
        
        .ztyy-testimonial-content {
            margin-bottom: 20px;
        }
        
        .ztyy-testimonial-text {
            font-size: 15px;
            color: #555;
            line-height: 1.8;
            font-style: italic;
            margin-bottom: 15px;
        }
        
        .ztyy-testimonial-stars {
            color: #FFC107;
            font-size: 14px;
            margin-bottom: 15px;
        }
        
        .ztyy-testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
            padding-top: 15px;
            border-top: 1px solid #eee;
        }
        
        .ztyy-testimonial-avatar {
            font-size: 32px;
            min-width: 40px;
            text-align: center;
        }
        
        .ztyy-author-info {
            flex: 1;
        }
        
        .ztyy-author-name {
            font-weight: 700;
            color: #1a1a1a;
            font-size: 14px;
        }
        
        .ztyy-author-title {
            font-size: 13px;
            color: #999;
        }
        
        /* News Section */
        .ztyy-news-section {
            padding: 100px 60px;
            background: white;
            max-width: 1400px;
            margin: 0 auto;
        }
        
        .ztyy-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 25px;
        }
        
        .ztyy-news-item {
            background: linear-gradient(135deg, #f5f7fa, #e8f0ff);
            padding: 30px;
            border-radius: 10px;
            transition: all 0.3s ease;
            border-top: 3px solid #2196F3;
        }
        
        .ztyy-news-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 35px rgba(33, 150, 243, 0.12);
        }
        
        .ztyy-news-date {
            display: inline-block;
            background: linear-gradient(135deg, #2196F3, #00BCD4);
            color: white;
            padding: 4px 12px;
            border-radius: 15px;
            font-size: 12px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        
        .ztyy-news-title {
            font-size: 18px;
            font-weight: 700;
            color: #1a1a1a;
            margin-bottom: 10px;
            line-height: 1.5;
        }
        
        .ztyy-news-summary {
            font-size: 14px;
            color: #666;
            line-height: 1.7;
        }
        
        /* CTA Section */
        .ztyy-cta-section {
            background: linear-gradient(135deg, #2196F3, #00BCD4);
            padding: 80px 60px;
            text-align: center;
            color: white;
        }
        
        .ztyy-cta-title {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.4;
        }
        
        .ztyy-cta-subtitle {
            font-size: 18px;
            margin-bottom: 40px;
            opacity: 0.95;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .ztyy-cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .ztyy-cta-primary {
            background: white;
            color: #2196F3;
            padding: 14px 40px;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 700;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            font-size: 16px;
        }
        
        .ztyy-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
        }
        
        .ztyy-cta-secondary {
            background: transparent;
            color: white;
            padding: 14px 40px;
            border: 2px solid white;
            border-radius: 8px;
            text-decoration: none;
            font-weight: 700;
            transition: all 0.3s ease;
            cursor: pointer;
            font-size: 16px;
        }
        
        .ztyy-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }
        
        /* Footer */
        .ztyy-footer-wrapper {
            background: #1a1a1a;
            color: #ccc;
            padding: 60px;
        }
        
        .ztyy-footer-content {
            max-width: 1400px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .ztyy-footer-column h3 {
            color: white;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }
        
        .ztyy-footer-column ul {
            list-style: none;
        }
        
        .ztyy-footer-column ul li {
            margin-bottom: 12px;
        }
        
        .ztyy-footer-column a {
            color: #ccc;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }
        
        .ztyy-footer-column a:hover {
            color: #2196F3;
        }
        
        .ztyy-footer-brand {
            font-size: 16px;
            font-weight: 700;
            color: white;
            margin-bottom: 12px;
        }
        
        .ztyy-footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
        }
        
        .ztyy-footer-bottom-text {
            color: #999;
        }
        
        .ztyy-footer-links {
            display: flex;
            gap: 30px;
            list-style: none;
        }
        
        .ztyy-footer-links a {
            color: #999;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        
        .ztyy-footer-links a:hover {
            color: #2196F3;
        }
        
        /* Responsive Design */
        @media (max-width: 1200px) {
            .ztyy-navbar {
                padding: 0 40px;
            }
            
            .ztyy-hero-content {
                padding: 60px 40px;
                gap: 40px;
            }
            
            .ztyy-features-section,
            .ztyy-products-section,
            .ztyy-scenarios-section,
            .ztyy-tech-section,
            .ztyy-testimonials-section,
            .ztyy-news-section {
                padding: 80px 40px;
            }
        }
        
        @media (max-width: 768px) {
            .ztyy-navbar {
                padding: 0 20px;
                justify-content: space-between;
            }
            
            .ztyy-nav-menu {
                display: none;
            }
            
            .ztyy-hero-content {
                grid-template-columns: 1fr;
                padding: 40px 20px;
                gap: 30px;
            }
            
            .ztyy-hero-text h1 {
                font-size: 32px;
            }
            
            .ztyy-hero-text p {
                font-size: 16px;
            }
            
            .ztyy-stats-section {
                padding: 40px 20px;
            }
            
            .ztyy-stats-grid {
                gap: 25px;
            }
            
            .ztyy-stat-number {
                font-size: 36px;
            }
            
            .ztyy-features-section,
            .ztyy-products-section,
            .ztyy-scenarios-section,
            .ztyy-tech-section,
            .ztyy-testimonials-section,
            .ztyy-news-section {
                padding: 50px 20px;
            }
            
            .ztyy-section-title {
                font-size: 28px;
            }
            
            .ztyy-cta-section {
                padding: 50px 20px;
            }
            
            .ztyy-cta-title {
                font-size: 28px;
            }
            
            .ztyy-footer-bottom {
                flex-direction: column;
                gap: 15px;
            }
            
            .ztyy-footer-links {
                flex-wrap: wrap;
                justify-content: center;
            }
        }
        
        @media (max-width: 480px) {
            .ztyy-hero-text h1 {
                font-size: 24px;
            }
            
            .ztyy-hero-text p {
                font-size: 14px;
            }
            
            .ztyy-hero-actions {
                flex-direction: column;
            }
            
            .ztyy-primary-action,
            .ztyy-secondary-action {
                width: 100%;
                text-align: center;
            }
            
            .ztyy-stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .ztyy-stat-number {
                font-size: 28px;
            }
            
            .ztyy-cta-buttons {
                flex-direction: column;
            }
            
            .ztyy-cta-primary,
            .ztyy-secondary-action {
                width: 100%;
            }
        }