/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

#targetDiv {
    min-height: 100vh;
    width: 100%;
}

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

/* 头部导航 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo img {
    max-height: 30px;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav a:hover {
    color: #2D8CFF;
}

.header-actions {
    display: flex;
    gap: 15px;
}

.login-btn, .signup-btn {
    padding: 8px 16px;
    border: 1px solid #2D8CFF;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn {
    background-color: #fff;
    color: #2D8CFF;
}

.login-btn:hover {
    background-color: #f0f7ff;
}

.signup-btn {
    background-color: #2D8CFF;
    color: #fff;
}

.signup-btn:hover {
    background-color: #1a73e8;
}

/* 首屏 */
.hero {
    background-color: #2D8CFF;
    color: #fff;
    padding: 120px 0 80px;
    text-align: center;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 700px;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.downlbtnvmmn {
    padding: 15px 30px;
    background-color: #fff;
    color: #2D8CFF;
    border: none;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.downlbtnvmmn:hover {
    background-color: #f0f7ff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.demo-btn {
    padding: 15px 30px;
    background-color: transparent;
    color: #fff;
    border: 2px solid #fff;
    border-radius: 4px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.demo-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.hero-image {
    margin-top: 60px;
    max-width: 100%;
}

.hero-image img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* 产品分类 */
.products {
    padding: 80px 0;
    background-color: #fff;
}

.products h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.product-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.product-card img {
    max-width: 100%;
    height: 150px;
    object-fit: contain;
    margin-bottom: 20px;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.product-card p {
    color: #666;
    margin-bottom: 25px;
}

.product-link {
    display: inline-block;
    padding: 10px 20px;
    background-color: #2D8CFF;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.product-link:hover {
    background-color: #1a73e8;
}

/* 功能介绍 */
.features {
    padding: 80px 0;
    background-color: #f5f7fa;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: #fff;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.feature-card img {
    max-width: 60px;
    height: 60px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #333;
}

.feature-card p {
    color: #666;
}

.features-more {
    text-align: center;
    margin-top: 50px;
}

.more-link {
    display: inline-block;
    padding: 12px 24px;
    border: 1px solid #2D8CFF;
    color: #2D8CFF;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.more-link:hover {
    background-color: #2D8CFF;
    color: #fff;
}

/* 版本更新 */
.updates {
    padding: 80px 0;
    background-color: #fff;
}

.updates h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.updates-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.update-item {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 25px;
    border-left: 4px solid #2D8CFF;
    transition: all 0.3s ease;
}

.update-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.update-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.version {
    font-weight: 600;
    color: #2D8CFF;
    font-size: 1.1rem;
}

.date {
    color: #666;
    font-size: 0.9rem;
}

.update-content {
    margin-left: 20px;
}

.update-content li {
    margin-bottom: 8px;
    color: #555;
}

/* 优势介绍 */
.advantages {
    padding: 80px 0;
    background-color: #2D8CFF;
    color: #fff;
}

.advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
}

.advantage-card {
    text-align: center;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.advantage-icon img {
    max-width: 50px;
    max-height: 50px;
}

.advantage-card h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.advantage-card p {
    color: rgba(255, 255, 255, 0.8);
}

/* 常见问题 */
.faq {
    padding: 80px 0;
    background-color: #f5f7fa;
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    color: #333;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.faq-item {
    background-color: #fff;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
}

.faq-item p {
    color: #666;
    margin-bottom: 20px;
}

.faq-link {
    color: #2D8CFF;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.faq-link:hover {
    color: #1a73e8;
    text-decoration: underline;
}

.faq-more {
    text-align: center;
}

/* 下载页面样式 */
.download-section {
    padding: 120px 0 80px;
    background-color: #fff;
}

.download-section h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #333;
}

.download-section p {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 60px;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.download-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    display: flex;
    align-items: center;
    gap: 25px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.download-icon {
    width: 80px;
    height: 80px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.download-icon img {
    max-width: 60px;
    max-height: 60px;
}

.download-info h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
    color: #333;
}

.download-info p {
    text-align: left;
    margin-bottom: 5px;
    color: #666;
    font-size: 0.9rem;
}

.download-info .version {
    color: #2D8CFF;
    font-weight: 500;
}

.download-action {
    margin-left: auto;
}

.download-notes {
    background-color: #f5f7fa;
    border-radius: 8px;
    padding: 30px;
}

.download-notes h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #333;
}

.download-notes ul {
    margin-left: 20px;
}

.download-notes li {
    margin-bottom: 10px;
    color: #555;
}

.download-notes a {
    color: #2D8CFF;
    text-decoration: none;
}

.download-notes a:hover {
    text-decoration: underline;
}

/* 底部版权 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #fff;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 12px;
}

.footer-col a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: #2D8CFF;
}

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

.social a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social a:hover {
    background-color: #2D8CFF;
    transform: translateY(-3px);
}

.social img {
    max-width: 20px;
    max-height: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* 常见问题页面样式 */
.faq-section {
    padding: 120px 0 80px;
    background-color: #fff;
}

.faq-section h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #333;
}

.faq-section p {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 60px;
}

.faq-categories {
    display: flex;
    flex-direction: column;
    gap: 50px;
}

.faq-category h2 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: #333;
    border-bottom: 2px solid #2D8CFF;
    padding-bottom: 10px;
}

.faq-item {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 20px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.faq-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
    font-weight: 600;
}

.faq-item p {
    text-align: left;
    color: #555;
    margin-bottom: 0;
    font-size: 1rem;
}

.faq-contact {
    text-align: center;
    margin-top: 60px;
    padding: 40px;
    background-color: #f5f7fa;
    border-radius: 8px;
}

.faq-contact h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.faq-contact p {
    margin-bottom: 30px;
}

.contact-btn {
    padding: 12px 24px;
    background-color: #2D8CFF;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.contact-btn:hover {
    background-color: #1a73e8;
}

/* 功能介绍页面样式 */
.features-section {
    padding: 120px 0 80px;
    background-color: #fff;
}

.features-section h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #333;
}

.features-section p {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 60px;
}

.feature-category {
    margin-bottom: 80px;
}

.feature-category h2 {
    font-size: 2rem;
    margin-bottom: 40px;
    color: #333;
    text-align: center;
    position: relative;
}

.feature-category h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: #2D8CFF;
    margin: 15px auto 0;
    border-radius: 2px;
}

.feature-detail {
    display: flex;
    gap: 50px;
    align-items: center;
    margin-bottom: 60px;
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 40px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.feature-detail:hover {
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.feature-detail.reverse {
    flex-direction: row-reverse;
}

.feature-image {
    flex: 1;
}

.feature-image img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.feature-info {
    flex: 1;
}

.feature-info h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #333;
}

.feature-info p {
    text-align: left;
    margin-bottom: 25px;
    color: #555;
    font-size: 1rem;
}

.feature-info ul {
    margin-left: 20px;
}

.feature-info li {
    margin-bottom: 12px;
    color: #555;
    position: relative;
    padding-left: 15px;
}

.feature-info li::before {
    content: '✓';
    position: absolute;
    left: -20px;
    color: #2D8CFF;
    font-weight: bold;
}

.features-cta {
    text-align: center;
    padding: 60px 40px;
    background-color: #2D8CFF;
    color: #fff;
    border-radius: 8px;
    margin-top: 40px;
}

.features-cta h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.features-cta p {
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.9);
}

/* 教程页面样式 */
.tutorial-section {
    padding: 120px 0 80px;
    background-color: #fff;
}

.tutorial-section h1 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #333;
}

.tutorial-section p {
    text-align: center;
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 60px;
}

.tutorial-category {
    margin-bottom: 80px;
}

.tutorial-category h2 {
    font-size: 2rem;
    margin-bottom: 40px;
    color: #333;
    text-align: center;
    position: relative;
}

.tutorial-category h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: #2D8CFF;
    margin: 15px auto 0;
    border-radius: 2px;
}

.tutorial-steps {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.tutorial-step {
    display: flex;
    align-items: flex-start;
    gap: 25px;
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.tutorial-step:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.step-number {
    width: 50px;
    height: 50px;
    background-color: #2D8CFF;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: bold;
    flex-shrink: 0;
    margin-top: 5px;
}

.step-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #333;
}

.step-content p {
    text-align: left;
    margin-bottom: 0;
    color: #555;
    font-size: 1rem;
}

.step-content a {
    color: #2D8CFF;
    text-decoration: none;
}

.step-content a:hover {
    text-decoration: underline;
}

.tutorial-detail {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 30px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.tutorial-detail:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.tutorial-detail h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #333;
}

.tutorial-detail h4 {
    font-size: 1.2rem;
    margin: 25px 0 15px;
    color: #333;
}

.tutorial-detail ol, .tutorial-detail ul {
    margin-left: 25px;
    margin-bottom: 20px;
}

.tutorial-detail li {
    margin-bottom: 12px;
    color: #555;
}

.tutorial-detail p {
    text-align: left;
    margin-bottom: 15px;
    color: #555;
    font-size: 1rem;
}

.tutorial-image {
    text-align: center;
    margin: 25px 0;
}

.tutorial-image img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tutorial-cta {
    text-align: center;
    padding: 60px 40px;
    background-color: #2D8CFF;
    color: #fff;
    border-radius: 8px;
    margin-top: 40px;
}

.tutorial-cta h2 {
    font-size: 2rem;
    margin-bottom: 20px;
}

.tutorial-cta p {
    margin-bottom: 30px;
    color: rgba(255, 255, 255, 0.9);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .nav {
        display: none;
    }
    
    .header-actions {
        display: none;
    }
    
    .products-grid, .features-grid, .advantages-grid, .faq-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons button {
        width: 200px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .products h2, .features h2, .updates h2, .advantages h2, .faq h2 {
        font-size: 2rem;
    }
    
    .update-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}