/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 主容器 */
#targetDiv {
    width: 100%;
    min-height: 100vh;
    background-color: #f5f5f5;
}

/* 导航栏 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #2c3e50;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 2rem;
}

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

.nav-links a:hover {
    color: #3498db;
}

/* 首屏 */
.hero {
    background-color: #3498db;
    color: #fff;
    padding: 8rem 0 6rem;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 下载按钮 */
.downlbtnvmmn {
    background-color: #e74c3c;
    color: #fff;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: background-color 0.3s ease;
    display: inline-block;
}

.downlbtnvmmn:hover {
    background-color: #c0392b;
}

/* 产品分类板块 */
.products {
    padding: 5rem 0;
    background-color: #fff;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.product-item {
    background-color: #f9f9f9;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.product-item i {
    font-size: 3rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.product-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

/* 会员套餐板块 */
.pricing {
    padding: 5rem 0;
    background-color: #f5f5f5;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.pricing-item {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.pricing-item.featured {
    transform: scale(1.05);
    border: 2px solid #3498db;
}

.pricing-header {
    background-color: #f9f9f9;
    padding: 2rem;
    text-align: center;
}

.pricing-item.featured .pricing-header {
    background-color: #3498db;
    color: #fff;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.pricing-item.featured .pricing-header h3 {
    color: #fff;
}

.price {
    font-size: 2.5rem;
    font-weight: bold;
    color: #3498db;
}

.pricing-item.featured .price {
    color: #fff;
}

.price-amount {
    display: inline-block;
}

.price-period {
    font-size: 1rem;
    color: #666;
    font-weight: normal;
    margin-left: 0.25rem;
}

.pricing-item.featured .price-period {
    color: rgba(255, 255, 255, 0.8);
}

.pricing-features {
    padding: 2rem;
}

.pricing-features ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #eee;
    color: #666;
    display: flex;
    align-items: center;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features i {
    color: #27ae60;
    margin-right: 0.75rem;
    font-size: 0.9rem;
}

.pricing-footer {
    padding: 2rem;
    text-align: center;
    background-color: #f9f9f9;
}

.pricing-item.featured .pricing-footer {
    background-color: rgba(52, 152, 219, 0.1);
}

/* 功能介绍板块 */
.features {
    padding: 5rem 0;
    background-color: #f5f5f5;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    transition: box-shadow 0.3s ease;
}

.feature-item:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2rem;
    color: #3498db;
    margin-right: 1.5rem;
    margin-top: 0.5rem;
}

.feature-content h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

/* 优势介绍板块 */
.advantages {
    padding: 5rem 0;
    background-color: #fff;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    background-color: #f9f9f9;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
}

.advantage-item i {
    font-size: 2.5rem;
    color: #3498db;
    margin-bottom: 1rem;
}

.advantage-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

/* 常见问题板块 */
.faq {
    padding: 5rem 0;
    background-color: #f5f5f5;
}

.faq-item {
    background-color: #fff;
    margin-bottom: 1rem;
    border-radius: 10px;
    overflow: hidden;
}

.faq-question {
    padding: 1.5rem 2rem;
    background-color: #f9f9f9;
    cursor: pointer;
    font-weight: bold;
    color: #2c3e50;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #e9e9e9;
}

.faq-answer {
    padding: 0 2rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-answer.active {
    padding: 1.5rem 2rem;
    max-height: 200px;
}

/* 底部版权板块 */
.footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 3rem 0 1rem;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    list-style: none;
    margin-bottom: 2rem;
}

.footer-links li {
    margin: 0 1rem;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #3498db;
}

.footer p {
    margin-bottom: 1rem;
    opacity: 0.8;
}

/* 专题页面样式 */
.page-content {
    padding: 8rem 0 5rem;
    max-width: 1000px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

.page-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #2c3e50;
    text-align: center;
}

.page-section {
    margin-bottom: 3rem;
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.page-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #3498db;
}

.page-section h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #2c3e50;
    margin-top: 1.5rem;
}

.page-section p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

.page-section ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.page-section li {
    margin-bottom: 0.5rem;
}

/* 教程步骤 */
.tutorial-steps {
    counter-reset: step;
}

.tutorial-step {
    position: relative;
    padding-left: 4rem;
    margin-bottom: 2rem;
}

.tutorial-step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 3rem;
    height: 3rem;
    background-color: #3498db;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .product-grid,
    .features-list,
    .advantages-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-item.featured {
        transform: none;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .page-content {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}