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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: #007bff;
}

.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 ease;
}

.nav-links a:hover {
    color: #007bff;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区域 */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-content p {
    font-size: 24px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 16px;
}

.btn-primary {
    background-color: #fff;
    color: #007bff;
}

.btn-primary:hover {
    background-color: #f8f9fa;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* 通用 section 样式 */
section {
    padding: 80px 0;
}

.contact {
    padding: 0;
}

.section-title {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
    font-weight: 700;
    padding: 0 20px;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: #007bff;
    margin: 20px auto 0;
}

.contact .section-title {
    margin-bottom: 0;
    padding-top: 60px;
}

/* 公司简介 */
.about {
    background-color: white;
}

.about-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
}

.about-text {
    flex: 1;
    min-width: 300px;
    margin-right: 50px;
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: #666;
}

.about-image {
    flex: 1;
    min-width: 300px;
}

.image-box {
    background-color: #f0f0f0;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.image-placeholder {
    width: 100%;
    height: 300px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 0.8; }
    50% { opacity: 1; }
    100% { opacity: 0.8; }
}

/* 核心业务 */
.services {
    background-color: #f8f9fa;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.service-icon {
    margin-bottom: 20px;
}

.icon-placeholder {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #007bff, #0056b3);
    border-radius: 50%;
    margin: 0 auto;
    animation: pulse 2s infinite;
}

.service-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #333;
}

.service-card p {
    color: #666;
    line-height: 1.7;
}

/* 团队介绍 */
.team {
    background-color: white;
}

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

.team-card {
    text-align: center;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.team-photo {
    margin-bottom: 20px;
}

.photo-placeholder {
    width: 150px;
    height: 150px;
    background: linear-gradient(45deg, #667eea, #764ba2);
    border-radius: 50%;
    margin: 0 auto;
    animation: pulse 2s infinite;
}

.team-card h3 {
    font-size: 24px;
    margin-bottom: 8px;
    color: #333;
}

.team-title {
    color: #007bff;
    font-weight: 500;
    margin-bottom: 15px;
}

.team-card p {
    color: #666;
    line-height: 1.7;
}

/* 联系我们 */
.contact {
    background-color: #f8f9fa;
}

.contact .container {
    max-width: 100%;
    padding: 0;
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
}

.contact-info {
    flex: 1;
    max-width: 1200px;
    min-width: 300px;
    background-color: white;
    padding: 60px 30px;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
    width: 100%;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

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

.contact-info li {
    margin-bottom: 15px;
    color: #666;
    padding-left: 25px;
    position: relative;
}

.contact-info li strong {
    color: #333;
}

/* 页脚 */
.footer {
    background-color: #333;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-logo,
.footer-links,
.footer-contact {
    flex: 1;
    min-width: 250px;
    margin-bottom: 30px;
}

.footer-logo h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #007bff;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: white;
}

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

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

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

.footer-links a:hover {
    color: #007bff;
}

.footer-contact p {
    color: #ccc;
    margin-bottom: 10px;
    line-height: 1.6;
}

.footer-bottom {
    text-align: center;
    padding: 30px 0;
    border-top: 1px solid #555;
    color: #888;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.footer-bottom p {
    margin: 0;
}

.footer-bottom a {
    color: #888;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: #007bff;
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: 25px 0;
    }
    
    .hero-content h2 {
        font-size: 36px;
    }
    
    .hero-content p {
        font-size: 20px;
    }
    
    .about-text {
        margin-right: 0;
        margin-bottom: 40px;
    }
    
    .contact-info {
        margin-right: 0;
        margin-bottom: 30px;
    }
    
    section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
}