:root {
            --primary-color: #4a6cf7;
            --primary-hover: #3a5ad1;
            --secondary-color: #00c2b8;
            --accent-color: #ff6b35;
            --text-color: #333;
            --text-light: #666;
            --text-lighter: #999;
            --background-color: #f8f9fa;
            --card-background: #ffffff;
            --border-color: #e0e0e0;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --danger-color: #dc3545;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
            --border-radius: 12px;
            --transition: all 0.3s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background-color: var(--background-color);
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 导航栏样式 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
            z-index: 1000;
            transition: var(--transition);
        }

        header.scrolled {
            padding: 10px 0;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
            transition: var(--transition);
        }

        header.scrolled .header-container {
            padding: 10px 0;
        }

        .logo {
            display: flex;
            align-items: center;
            text-decoration: none;
            gap: 12px;
        }

        .logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(74, 108, 247, 0.3);
        }

        .logo-text {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-color);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 30px;
        }

        .nav-links a {
            text-decoration: none;
            color: var(--text-color);
            font-size: 16px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            padding: 8px 0;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary-color);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn {
            padding: 12px 24px;
            border: none;
            border-radius: 30px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-primary {
            background-color: var(--primary-color);
            color: white;
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(74, 108, 247, 0.3);
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }

        .btn-secondary:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-2px);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--text-color);
            font-size: 24px;
            cursor: pointer;
        }

        /* 英雄区域 */
        .hero {
            padding: 200px 0 120px;
            background-image: linear-gradient(135deg, #f0f5ff 0%, #e6f0ff 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-container {
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .hero-content {
            flex: 1;
            z-index: 2;
        }

        .hero-title {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-color);
            margin-bottom: 20px;
        }

        .hero-title span {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .hero-description {
            font-size: 18px;
            color: var(--text-light);
            margin-bottom: 30px;
            line-height: 1.6;
        }

        .hero-actions {
            display: flex;
            gap: 20px;
            margin-bottom: 40px;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
        }

        .stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary-color);
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-light);
        }

        .hero-image {
            flex: 1;
            position: relative;
            z-index: 2;
        }

        .hero-image img {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0% { transform: translateY(0px) rotate(0deg); }
            50% { transform: translateY(-20px) rotate(2deg); }
            100% { transform: translateY(0px) rotate(0deg); }
        }

        .hero-shape {
            position: absolute;
            z-index: 1;
        }

        .shape-1 {
            top: 10%;
            right: 5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(74, 108, 247, 0.1) 0%, rgba(74, 108, 247, 0) 70%);
            border-radius: 50%;
            animation: pulse 8s ease-in-out infinite;
        }

        .shape-2 {
            bottom: 5%;
            left: 10%;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(0, 194, 184, 0.1) 0%, rgba(0, 194, 184, 0) 70%);
            border-radius: 50%;
            animation: pulse 6s ease-in-out infinite reverse;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); opacity: 0.5; }
            50% { transform: scale(1.2); opacity: 0.7; }
        }

        /* 特性部分 */
        .features {
            padding: 100px 0;
            background-color: white;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--primary-color);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 15px;
        }

        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-color);
            margin-bottom: 20px;
        }

        .section-description {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.6;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .feature-card {
            background-color: var(--card-background);
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }

        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-color);
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: #f0f5ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 24px;
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background-color: var(--primary-color);
            color: white;
            transform: scale(1.1);
        }

        .feature-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-color);
            margin-bottom: 15px;
        }

        .feature-description {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
        }

        /* 下载部分 */
        .download {
            padding: 100px 0;
            background-color: var(--background-color);
            position: relative;
            overflow: hidden;
        }

        .download-container {
            display: flex;
            align-items: center;
            gap: 50px;
        }

        .download-image {
            flex: 1;
            position: relative;
        }

        .download-image img {
            width: 100%;
            height: auto;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .download-content {
            flex: 1;
        }

        .download-platforms {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-top: 30px;
        }

        .platform-card {
            display: flex;
            align-items: center;
            gap: 15px;
            background-color: white;
            border-radius: var(--border-radius);
            padding: 20px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
        }

        .platform-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-color);
        }

        .platform-icon {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #f0f5ff;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-color);
            font-size: 24px;
        }

        .platform-info h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-color);
            margin-bottom: 5px;
        }

        .platform-info p {
            font-size: 14px;
            color: var(--text-light);
        }

        /* 用户评价 */
        .testimonials {
            padding: 100px 0;
            background-color: white;
        }

        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
        }

        .testimonial-card {
            background-color: var(--card-background);
            border-radius: var(--border-radius);
            padding: 30px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            position: relative;
        }

        .testimonial-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }

        .testimonial-quote {
            font-size: 16px;
            color: var(--text-color);
            line-height: 1.6;
            margin-bottom: 20px;
            position: relative;
            padding-left: 20px;
        }

        .testimonial-quote::before {
            content: '"';
            position: absolute;
            top: 0;
            left: 0;
            font-size: 48px;
            color: rgba(74, 108, 247, 0.1);
            line-height: 1;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .author-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            object-fit: cover;
            border: 3px solid var(--primary-color);
        }

        .author-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-color);
            margin-bottom: 5px;
        }

        .author-info p {
            font-size: 14px;
            color: var(--text-light);
        }

        /* 常见问题 */
        .faq {
            padding: 100px 0;
            background-color: var(--background-color);
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            margin-bottom: 20px;
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            padding: 20px;
            background-color: white;
            border: none;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-color);
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-question:hover {
            background-color: #f8faff;
        }

        .faq-question.active {
            background-color: #f0f5ff;
            color: var(--primary-color);
        }

        .faq-icon {
            font-size: 20px;
            transition: var(--transition);
        }

        .faq-question.active .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
         
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
            max-height: 0;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-answer.show {
            max-height: 500px;
            padding: 0 20px 20px;
        }

        /* 新闻预览 */
        .news-preview {
            padding: 100px 0;
            background-color: white;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .news-card {
            background-color: var(--card-background);
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }

        .news-image {
            width: 100%;
            height: 200px;
            overflow: hidden;
        }

        .news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .news-card:hover .news-image img {
            transform: scale(1.05);
        }

        .news-content {
            padding: 25px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-date {
            font-size: 14px;
            color: var(--text-light);
            margin-bottom: 10px;
        }

        .news-title {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-color);
            margin-bottom: 15px;
            transition: var(--transition);
        }

        .news-card:hover .news-title {
            color: var(--primary-color);
        }

        .news-excerpt {
            font-size: 15px;
            color: var(--text-light);
            line-height: 1.6;
            margin-bottom: 20px;
            flex: 1;
        }

        .news-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--primary-color);
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
        }

        .news-link:hover {
            transform: translateX(5px);
        }

        .view-all-news {
            text-align: center;
            margin-top: 40px;
        }

        /* CTA 部分 */
        .cta {
            padding: 100px 0;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-container {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .cta-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .cta-description {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 40px;
            line-height: 1.6;
        }

        .cta-button {
            background-color: white;
            color: var(--primary-color);
            padding: 16px 40px;
            font-size: 18px;
            font-weight: 700;
            border: none;
            border-radius: 30px;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }

        .cta-shape {
            position: absolute;
            z-index: 1;
            opacity: 0.1;
        }

        .cta-shape-1 {
            top: 10%;
            right: 10%;
            width: 400px;
            height: 400px;
            background-color: white;
            border-radius: 50%;
        }

        .cta-shape-2 {
            bottom: 10%;
            left: 10%;
            width: 300px;
            height: 300px;
            background-color: white;
            border-radius: 50%;
        }

        /* 页脚 */
        footer {
            background-color: #2c3e50;
            color: white;
            padding: 80px 0 40px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 50px;
            margin-bottom: 50px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
        }

        .footer-logo-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            font-weight: bold;
        }

        .footer-logo-text {
            font-size: 24px;
            font-weight: 700;
            color: white;
        }

        .footer-about {
            font-size: 15px;
            color: #bdc3c7;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .footer-social {
            display: flex;
            gap: 15px;
        }

        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            color: white;
            transition: var(--transition);
            text-decoration: none;
        }

        .footer-social a:hover {
            background-color: var(--primary-color);
            transform: translateY(-3px);
        }

        .footer-column h3 {
            font-size: 18px;
            font-weight: 600;
            color: white;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background-color: var(--secondary-color);
        }

        .footer-links {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 15px;
        }

        .footer-links a {
            color: #bdc3c7;
            text-decoration: none;
            font-size: 15px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-links a:hover {
            color: white;
            transform: translateX(5px);
        }

        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 15px;
        }

        .footer-contact-item i {
            color: var(--secondary-color);
            margin-top: 4px;
        }

        .footer-contact-item p {
            color: #bdc3c7;
            font-size: 15px;
            line-height: 1.6;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-bottom p {
            color: #95a5a6;
            font-size: 14px;
        }

        .footer-links-container {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
        }

        .footer-links-container a {
            color: #95a5a6;
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-links-container a:hover {
            color: white;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-container,
            .download-container {
                flex-direction: column;
                text-align: center;
            }

            .hero-stats {
                justify-content: center;
            }

            .hero-content,
            .download-content {
                order: 2;
            }

            .hero-image,
            .download-image {
                order: 1;
            }

            .hero-title {
                font-size: 40px;
            }

            .cta-title {
                font-size: 32px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }

            .mobile-menu-btn {
                display: block;
            }

            .hero {
                padding: 180px 0 100px;
            }

            .hero-title {
                font-size: 36px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: center;
            }

            .section-title {
                font-size: 32px;
            }

            .features-grid,
            .testimonials-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }

            .footer-content {
                gap: 30px;
            }

            .footer-links-container {
                flex-wrap: wrap;
                gap: 15px;
            }
        }

        @media (max-width: 576px) {
            .hero-title {
                font-size: 32px;
            }

            .hero-description {
                font-size: 16px;
            }

            .section-title {
                font-size: 28px;
            }

            .cta-title {
                font-size: 28px;
            }

            .cta-description {
                font-size: 16px;
            }

            .cta-button {
                padding: 14px 30px;
                font-size: 16px;
            }
        }

        /* 动画效果 */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease-out, transform 0.6s ease-out;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }