/* 全局重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Helvetica Neue", Helvetica, Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #0066cc;
    color: #fff;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #0052a3;
}

/* 导航栏 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #0066cc;
    letter-spacing: 1px;
}

.nav a {
    margin-left: 30px;
    font-size: 16px;
    color: #555;
}

.nav a:hover {
    color: #0066cc;
}

/* Hero 区域 */
.hero {
    height: 600px;
    background: linear-gradient(135deg, #e0f7fa 0%, #e8eaf6 100%);
    display: flex;
    align-items: center;
    text-align: center;
    padding-top: 70px; /* 避开固定导航栏 */
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    color: #222;
}

.hero p {
    font-size: 20px;
    color: #666;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 通用区块样式 */
.section {
    padding: 80px 0;
    background-color: #fff;
}

.section.bg-light {
    background-color: #f9f9f9;
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background-color: #0066cc;
    margin: 15px auto 0;
}

/* 业务卡片 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    text-align: center;
    transition: transform 0.3s;
    border: 1px solid #eee;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.service-card .icon {
    font-size: 40px;
    margin-bottom: 20px;
    display: block;
}

.service-card h3 {
    margin-bottom: 15px;
    font-size: 20px;
    color: #333;
}

.service-card p {
    color: #777;
    font-size: 14px;
}

/* 关于我们内容 */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 16px;
    color: #555;
}

.about-content p {
    margin-bottom: 20px;
}

/* 页脚 */
.footer {
    background-color: #333;
    color: #aaa;
    padding: 40px 0;
    text-align: center;
    font-size: 14px;
}

.footer .beian-info {
    margin-top: 15px;
}

.footer a:hover {
    color: #fff;
    text-decoration: underline;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }
    
    .hero p {
        font-size: 16px;
        padding: 0 20px;
    }
    
    .nav {
        display: none; /* 移动端简化处理，暂隐藏菜单 */
    }
}