/* 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;
}

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

/* 头部导航样式 */
header {
    background-color: #ffffff;
    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: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #4a6fa5;
    text-decoration: none;
}

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

.nav-links li {
    margin-left: 30px;
}

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

.nav-links a:hover {
    color: #4a6fa5;
}

/* 通用区块样式 */
.section {
    padding: 80px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: #333;
}

/* 首屏样式 */
.hero {
    background: linear-gradient(135deg, #4a6fa5 0%, #6b8eba 100%);
    color: white;
    text-align: center;
    padding: 120px 20px 80px;
    margin-top: 70px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.downlbtnvmmn {
    display: inline-block;
    background-color: #ff6b6b;
    color: white;
    padding: 15px 40px;
    text-decoration: none;
    border-radius: 50px;
    font-size: 18px;
    font-weight: bold;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
}

.downlbtnvmmn:hover {
    background-color: #ff5252;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 产品分类样式 */
.product-categories {
    background-color: white;
}

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

.category-card {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s;
}

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

.category-card i {
    font-size: 48px;
    color: #4a6fa5;
    margin-bottom: 20px;
}

.category-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

/* 功能介绍样式 */
.features {
    background-color: #f8f9fa;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-item {
    text-align: center;
}

.feature-item i {
    font-size: 48px;
    color: #4a6fa5;
    margin-bottom: 20px;
}

.feature-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

/* 优势介绍样式 */
.advantages {
    background-color: white;
}

.advantages-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.advantage-item i {
    font-size: 32px;
    color: #4a6fa5;
    margin-right: 20px;
    margin-top: 5px;
}

.advantage-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

/* 常见问题样式 */
.faq {
    background-color: #f8f9fa;
}

.faq-item {
    background-color: white;
    margin-bottom: 20px;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.faq-question {
    font-weight: bold;
    font-size: 18px;
    margin-bottom: 10px;
    color: #4a6fa5;
}

.faq-answer {
    color: #666;
    line-height: 1.6;
}

/* 底部样式 */
footer {
    background-color: #333;
    color: white;
    padding: 40px 20px;
    text-align: center;
}

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

.footer-links {
    margin: 20px 0;
}

.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    opacity: 0.8;
}

.footer-links a:hover {
    opacity: 1;
}

/* 通用内容页面样式 */
.content-page {
    padding: 100px 20px;
    max-width: 1000px;
    margin: 0 auto;
    background-color: white;
}

.content-page h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #4a6fa5;
}

.content-page p {
    margin-bottom: 20px;
    line-height: 1.7;
    color: #666;
}

.content-page ul {
    margin-bottom: 20px;
    padding-left: 20px;
}

.content-page li {
    margin-bottom: 10px;
    line-height: 1.7;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }
    
    .nav-links {
        display: none;
    }
    
    .section {
        padding: 60px 20px;
    }
    
    .categories-grid,
    .features-grid,
    .advantages-list {
        grid-template-columns: 1fr;
    }
}