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

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

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

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo h1 {
    color: #2c3e50;
    font-size: 24px;
}

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

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

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

.nav-menu a:hover {
    color: #3498db;
}

/* 首页横幅样式 */
.hero {
    background: linear-gradient(135deg, #3498db, #8e44ad);
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding-top: 60px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-content h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    font-weight: 400;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn.primary {
    background-color: #e74c3c;
    color: white;
}

.btn.primary:hover {
    background-color: #c0392b;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.btn.secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn.secondary:hover {
    background-color: rgba(255,255,255,0.1);
    transform: translateY(-3px);
}

/* 关于我们样式 */
.about {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #2c3e50;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: #555;
}

.features {
    margin-top: 30px;
}

.features li {
    margin-bottom: 15px;
    font-size: 1.1rem;
    color: #2c3e50;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* 产品服务样式 */
.services {
    padding: 100px 0;
    background-color: #fff;
}

.services h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
}

.section-description {
    text-align: center;
    font-size: 1.2rem;
    color: #777;
    margin-bottom: 60px;
}

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

.service-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.service-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.service-card p {
    color: #777;
    font-size: 1rem;
}

/* 解决方案样式 */
.solutions {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.solutions h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
}

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

.solution-card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-5px);
}

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #2c3e50;
}

.solution-card p {
    color: #777;
    font-size: 1rem;
}

/* 联系我们样式 */
.contact {
    padding: 100px 0;
    background-color: #fff;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
}

.contact-info .contact-item {
    margin-bottom: 30px;
}

.contact-info h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #2c3e50;
}

.contact-info p {
    font-size: 1.1rem;
    color: #777;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.contact-form textarea {
    resize: vertical;
}

/* 页脚样式 */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 60px 0 30px;
}

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

.footer-logo h2 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.footer-logo p {
    color: #bbb;
}

.link-column h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.link-column ul {
    list-style: none;
}

.link-column ul li {
    margin-bottom: 10px;
}

.link-column a {
    color: #bbb;
    text-decoration: none;
    transition: color 0.3s;
}

.link-column a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #444;
    color: #bbb;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content h2 {
        font-size: 1.5rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
}