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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
    -webkit-font-smoothing: antialiased;
}

/* 容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    /* background-color: #007bff; */
    /* background-color: #6E4AF4; */
    background-color: #764ed3; /* 调整为与banner一致的紫色主色调 */
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-size: 14px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(124, 58, 237, 0.3);
}

.btn:hover {
    /* background-color: #0056b3; */
    /* background-color: #8F8EF4; */
    background-color: #6c46aa; /* 悬停时使用更深的紫色 */
    transform: translateY(-2px); /* 增加上浮效果 */
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4); /* 增强阴影效果 */
}

/* 标题样式 */
.section-title {
    font-size: 28px;
    text-align: center;
    margin-bottom: 40px;
    color: #333;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #007bff;
}

/* 头部样式 */
.header {
    background-color: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

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

.logo img {
    height: 40px;
}

/* 桌面导航 */
.desktop-nav ul {
    display: flex;
    list-style: none;
}

.desktop-nav li {
    margin: 0 20px;
}

.desktop-nav a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    transition: color 0.3s ease;
    position: relative;
}

.desktop-nav a:hover,
.desktop-nav a.active {
    color: #007bff;
}

.desktop-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #007bff;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    cursor: pointer;
}

/* 移动端导航 */
.mobile-nav {
    display: none;
    background-color: white;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    position: absolute;
    top: 70px;
    left: 0;
    right: 0;
}

.mobile-nav ul {
    list-style: none;
    padding: 10px 0;
}

.mobile-nav li {
    border-bottom: 1px solid #eee;
}

.mobile-nav a {
    display: block;
    padding: 12px 20px;
    text-decoration: none;
    color: #333;
    transition: background-color 0.3s ease;
}

.mobile-nav a:hover,
.mobile-nav a.active {
    background-color: #f8f9fa;
    color: #007bff;
}

/* 横幅样式 */
.banner {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    margin-top: 70px;
}

.banner-content h1 {
    font-size: 36px;
    margin-bottom: 20px;
    font-weight: bold;
}

.banner-content p {
    font-size: 18px;
    opacity: 0.9;
}

/* 服务区域样式 */
.services {
    padding: 80px 0;
    background-color: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

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

.service-icon {
    font-size: 40px;
    color: #007bff;
    margin-bottom: 20px;
}

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

.service-card p {
    color: #666;
    margin-bottom: 20px;
}

.service-link {
    display: inline-flex;
    align-items: center;
    color: #007bff;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.service-link:hover {
    color: #0056b3;
}

.service-link i {
    margin-left: 5px;
    font-size: 12px;
    transition: transform 0.3s ease;
}

.service-link:hover i {
    transform: translateX(3px);
}

/* 客户案例样式 */
.cases {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.case-item:hover {
    transform: translateY(-5px);
}

.case-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0));
    color: white;
    padding: 30px 20px 20px;
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.3s ease;
}

.case-item:hover .case-overlay {
    transform: translateY(0);
    opacity: 1;
}

.case-overlay h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.case-overlay p {
    font-size: 14px;
    opacity: 0.9;
}

/* 关于我们样式 */
.about {
    padding: 80px 0;
    background-color: white;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    margin-bottom: 30px;
}

.company-info {
    display: inline-flex;
    align-items: center;
    background-color: #f8f9fa;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 14px;
    color: #333;
}

.company-info i {
    margin-right: 10px;
    color: #007bff;
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo img {
    height: 50px;
}

.footer-links h3,
.footer-contact h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    text-decoration: none;
    color: #ccc;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    margin-bottom: 10px;
    color: #ccc;
    display: flex;
    align-items: center;
}

.footer-contact i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid #555;
    padding-top: 20px;
    text-align: center;
    font-size: 14px;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .services-grid,
    .cases-grid,
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-wrap: wrap;
    }

    .desktop-nav,
    .contact-btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-nav.active {
        display: block;
    }
    
    .banner-content h1 {
        font-size: 28px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
    
    .services-grid,
    .cases-grid,
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .case-item img {
        height: 200px;
    }
}

@media (max-width: 576px) {
    .section-title {
        font-size: 24px;
    }
    
    .banner-content h1 {
        font-size: 24px;
    }
    
    .service-card,
    .case-item {
        padding: 20px;
    }
    
    .about-content p {
        font-size: 14px;
    }
}