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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* 头部导航 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2d8cff;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

.nav-links a:hover {
    color: #2d8cff;
}

/* 首屏部分 */
.hero {
    background-color: #2d8cff;
    color: #fff;
    padding: 10rem 2rem 8rem;
    text-align: center;
    margin-top: 70px;
}

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

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 下载按钮 */
.downlbtnvmmn {
    display: inline-block;
    background-color: #fff;
    color: #2d8cff;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.downlbtnvmmn:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 通用板块样式 */
.section {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

/* 产品分类板块 */
.product-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.category {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.category h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2d8cff;
}

/* 功能介绍板块 */
.features {
    background-color: #fff;
}

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

.feature-item {
    padding: 2rem;
    background-color: #f9f9f9;
    border-radius: 10px;
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

/* 版本更新板块 */
.updates {
    background-color: #f9f9f9;
}

.update-list {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.update-item {
    padding: 2rem;
    border-bottom: 1px solid #eee;
}

.update-item:last-child {
    border-bottom: none;
}

.update-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #2d8cff;
}

.update-date {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* 优势介绍板块 */
.advantages {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.advantage-item {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.advantage-item h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #333;
}

/* 常见问题板块 */
.faq-section {
    background-color: #fff;
}

.faq-item {
    margin-bottom: 2rem;
    padding: 2rem;
    background-color: #f9f9f9;
    border-radius: 10px;
}

.faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: #333;
}

/* 底部版权板块 */
footer {
    background-color: #333;
    color: #fff;
    padding: 3rem 2rem;
    text-align: center;
}

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

/* 下载页面 */
.download-page {
    text-align: center;
    padding: 8rem 2rem 5rem;
}

.download-page h1 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #333;
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 3rem auto;
}

.download-option {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

/* 教程页面 */
.tutorial-page {
    max-width: 1000px;
    margin: 8rem auto 5rem;
    padding: 0 2rem;
}

.tutorial-page h1 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: #333;
}

.tutorial-step {
    margin-bottom: 3rem;
    padding: 2rem;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.tutorial-step h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #2d8cff;
    text-align: left;
}

.tutorial-step ol {
    margin-left: 2rem;
    margin-top: 1rem;
}

.tutorial-step li {
    margin-bottom: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .section h2 {
        font-size: 2rem;
    }
    
    .download-page h1 {
        font-size: 2rem;
    }
    
    .tutorial-page h1 {
        font-size: 2rem;
    }
}