/* 上海吉斯普机械设备有限公司官网样式 */
/* 主色调：基于logo的蓝色系，搭配工业风格的灰色 */

:root {
    --primary-blue: #0066cc;      /* 主蓝色 */
    --secondary-blue: #004d99;    /* 深蓝色 */
    --accent-blue: #3399ff;       /* 亮蓝色 */
    --dark-gray: #333333;         /* 深灰 */
    --medium-gray: #666666;       /* 中灰 */
    --light-gray: #f5f5f5;        /* 浅灰 */
    --white: #ffffff;
    --border-color: #e0e0e0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

/* 头部样式 */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.footer-logo {
    height: 40px;
    opacity: 0.9;
}

.company-name {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-blue);
}

.company-name span {
    color: var(--secondary-blue);
    font-size: 18px;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: var(--dark-gray);
    font-weight: 500;
    font-size: 16px;
    padding: 5px 0;
    position: relative;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-blue);
}

.nav-menu a.active {
    color: var(--primary-blue);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-blue);
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 300;
}

.hero p {
    font-size: 20px;
    max-width: 800px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background-color: var(--white);
    color: var(--primary-blue);
    padding: 12px 30px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    transition: all 0.3s;
}

.cta-button:hover {
    background-color: var(--light-gray);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* 主要内容区域 */
.main-content {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--secondary-blue);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary-blue);
}

.section-title p {
    color: var(--medium-gray);
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto;
}

/* 产品网格 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.product-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.product-image {
    height: 200px;
    background-color: var(--light-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--medium-gray);
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    color: var(--secondary-blue);
    margin-bottom: 10px;
    font-size: 20px;
}

.product-info p {
    color: var(--medium-gray);
    margin-bottom: 15px;
}

.product-features {
    list-style: none;
    margin-bottom: 20px;
}

.product-features li {
    padding: 5px 0;
    color: var(--dark-gray);
    position: relative;
    padding-left: 20px;
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}

/* 品牌展示 */
.brands-section {
    background-color: var(--light-gray);
    padding: 60px 0;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    align-items: center;
}

.brand-item {
    background: var(--white);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 3px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.brand-item:hover {
    transform: translateY(-3px);
}

.brand-item h4 {
    color: var(--secondary-blue);
    margin-top: 15px;
    font-size: 18px;
}

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

.service-item {
    text-align: center;
    padding: 30px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.service-icon {
    font-size: 40px;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.service-item h3 {
    color: var(--secondary-blue);
    margin-bottom: 15px;
}

/* 页脚 */
.footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 20px;
}

.footer-section p, .footer-section a {
    color: #cccccc;
    margin-bottom: 10px;
    display: block;
    text-decoration: none;
}

.footer-section a:hover {
    color: var(--accent-blue);
}

.contact-info {
    list-style: none;
}

.contact-info li {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.contact-info i {
    color: var(--accent-blue);
    margin-top: 3px;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #999999;
    font-size: 14px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero p {
        font-size: 18px;
    }
    
    .section-title h2 {
        font-size: 28px;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
}