/* 全局样式 */
body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 导航栏样式 */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    background-color: #fff;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

/* 内容区域通用样式 */
.content-section {
    display: none;
    min-height: 100vh;
    padding: 80px 0;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.content-section.active {
    display: block;
    opacity: 1;
}

/* 首页区域样式 */
#home {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

#home h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 20px;
}

#home p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

/* 项目介绍区域样式 */
#project {
    background-color: #fff;
    overflow: visible;
}

.project-content {
    position: relative;
    width: 100%;
}

.project-module {
    min-height: 100vh;
    padding: 100px 0;
    display: flex;
    align-items: center;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.project-module.active {
    opacity: 1;
    transform: translateY(0);
}

.project-module h3 {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    color: #333;
}

.project-module p {
    font-size: 1.1rem;
    margin-bottom: 30px;
    color: #666;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
    font-size: 1rem;
    color: #555;
    line-height: 1.6;
}

.feature-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #4CAF50;
    font-weight: bold;
}

.module-image {
    position: relative;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    margin: 20px 0;
    overflow: hidden;
}

.module-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    transition: transform 0.3s ease;
    object-fit: cover;
}

.module-image:hover img {
    transform: scale(1.02);
}

/* 业务详情区域样式 */
#business {
    background-color: #f8f9fa;
}

.business-content {
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 隐私协议区域样式 */
#privacy {
    background-color: #fff;
}

.privacy-content {
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 项目下载区域样式 */
#download {
    background-color: #f8f9fa;
}

.download-buttons {
    margin-bottom: 30px;
}

.download-instructions {
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.download-instructions h3 {
    margin-bottom: 20px;
    font-weight: bold;
}

/* 页脚样式 */
.footer {
    padding: 30px 0;
    background-color: #343a40;
    color: #fff;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .content-section {
        padding: 60px 0;
    }
    
    #home h1 {
        font-size: 2.5rem;
    }
    
    .download-buttons {
        text-align: center;
        margin-bottom: 20px;
    }
    
    .download-buttons .btn {
        margin-bottom: 10px;
    }

    .project-module {
        padding: 60px 0;
        text-align: center;
    }

    .project-module h3 {
        font-size: 2rem;
    }

    .feature-list li {
        text-align: left;
    }

    .module-image {
        margin: 15px 0;
        padding: 15px;
    }
    
    .module-image img {
        max-width: 100%;
        height: auto;
    }
}