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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
    overflow-x: hidden;
}

/* 确保页面背景色满屏 */
html, body {
    height: 100%;
    width: 100%;
}

/* 目标容器 */
#targetDiv {
    width: 100%;
    min-height: 100vh;
    background-color: #f8f9fa;
}

/* 头部导航样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    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: 1.8rem;
    font-weight: bold;
    color: #007bff;
    text-decoration: none;
}

.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: #007bff;
}

/* 首屏样式 */
.hero {
    height: 50vh;
    background-color: #007bff;
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 2rem;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

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

/* 下载按钮样式 */
.downlbtnvmmn {
    display: inline-block;
    background-color: #fff;
    color: #007bff;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.downlbtnvmmn:hover {
    background-color: #f8f9fa;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

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

/* 产品分类板块 */
.products {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}

.product-card {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-card i {
    font-size: 3rem;
    color: #007bff;
    margin-bottom: 1rem;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* 功能介绍板块 */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-item {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.feature-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #007bff;
}

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

.advantages-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.advantage-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.advantage-item i {
    font-size: 2rem;
    color: #007bff;
    margin-top: 0.2rem;
}

.advantage-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

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

.faq-item {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
}

.faq-item h3 {
    font-size: 1.1rem;
    color: #007bff;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item p {
    margin-top: 0.5rem;
    color: #666;
}

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

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

.download-options {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 3rem;
}

.download-option {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    min-width: 200px;
}

.download-option i {
    font-size: 3rem;
    color: #007bff;
    margin-bottom: 1rem;
}

/* 功能介绍专题页样式 */
.feature-detail {
    background-color: #fff;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.feature-detail h3 {
    font-size: 1.8rem;
    color: #007bff;
    margin-bottom: 1rem;
}

/* 使用攻略专题页样式 */
.guide-step {
    background-color: #fff;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
    border-left: 4px solid #007bff;
}

.guide-step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #007bff;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .section h2 {
        font-size: 2rem;
    }
    
    .download-options {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section {
        padding: 3rem 1rem;
    }
}