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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* 导航栏样式 */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Logo 样式 */
.logo {
    display: flex;
    align-items: center;
    font-size: 1.8rem;
    font-weight: 700;
    color: #007bff;
    text-decoration: none;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo i {
    margin-right: 10px;
    color: #007bff;
    animation: float 3s ease-in-out infinite;
}

.logo::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.logo:hover::before {
    left: 100%;
}

/* 导航菜单样式 */
.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    perspective: 1000px;
}

.nav-menu li {
    margin-left: 30px;
    position: relative;
    transform-style: preserve-3d;
}

.nav-menu a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    font-size: 1rem;
    padding: 12px 16px;
    display: inline-block;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 8px;
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    transform-style: preserve-3d;
    transform: translateZ(0);
}

/* 导航项3D悬停效果 */
.nav-menu a:hover {
    color: #ffffff;
    transform: translateY(-5px) rotateX(5deg) translateZ(20px);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 12px 25px rgba(102, 126, 234, 0.4),
                0 8px 15px rgba(0, 0, 0, 0.2),
                inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

/* 导航项高级下划线效果 */
.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, #ff6b6b, #4ecdc4);
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
    transform: translateX(-50%);
    border-radius: 3px;
    box-shadow: 0 2px 5px rgba(255, 107, 107, 0.3);
}

.nav-menu a:hover::after {
    width: 80%;
    left: 50%;
}

/* 当前活动导航项 */
.nav-menu a.active {
    color: #ffffff;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 6px 15px rgba(102, 126, 234, 0.3);
}

.nav-menu a.active::after {
    width: 80%;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, #ffd93d, #6bcb77);
    box-shadow: 0 2px 5px rgba(255, 217, 61, 0.3);
}

/* 滚动时导航栏样式变化 */
.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.12);
    padding: 10px 0;
}

/* 动画效果 */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #333;
    transition: all 0.3s ease;
    padding: 5px;
    border-radius: 5px;
}

.mobile-menu:hover {
    color: #007bff;
    background-color: rgba(0, 123, 255, 0.1);
}

/* 移动菜单激活状态 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(240, 240, 240, 0.98));
        backdrop-filter: blur(15px);
        padding: 20px;
        box-shadow: 0 15px 40px rgba(102, 126, 234, 0.2),
                    0 5px 15px rgba(0, 0, 0, 0.1);
        z-index: 1000;
        border-radius: 0 0 20px 20px;
        transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    
    .nav-menu.active {
        display: flex;
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    
    .nav-menu li {
        margin: 8px 0;
        perspective: 800px;
    }
    
    .nav-menu a {
        display: block;
        padding: 15px 20px;
        width: 100%;
        background: linear-gradient(145deg, #ffffff, #f0f0f0);
        border-radius: 10px;
        margin: 5px 0;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
        transition: all 0.3s ease;
    }
    
    .nav-menu a:hover {
        transform: translateX(10px) rotateY(5deg);
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    }
    
    .nav-menu a.active {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        box-shadow: 0 6px 15px rgba(102, 126, 234, 0.3);
        transform: translateX(5px);
    }
    
    /* 显示移动菜单按钮 */
    .mobile-menu {
        display: block;
    }
}

/* 首页横幅样式 */
.hero {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: #fff;
    padding: 150px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><circle cx="50" cy="50" r="2" fill="white" opacity="0.1"/></svg>');
    background-size: 50px 50px;
}

.hero .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #fff;
    color: #007bff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid #fff;
}

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

.btn-primary:hover {
    background-color: transparent;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #fff;
    color: #007bff;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.hero-visual {
    position: relative;
    width: 400px;
    height: 400px;
}

.tech-circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.2);
    animation: float 6s ease-in-out infinite;
}

.tech-circle:nth-child(1) {
    width: 300px;
    height: 300px;
    top: 50px;
    left: 50px;
    animation-delay: 0s;
}

.tech-circle:nth-child(2) {
    width: 200px;
    height: 200px;
    top: 100px;
    left: 100px;
    animation-delay: 2s;
}

.tech-circle:nth-child(3) {
    width: 100px;
    height: 100px;
    top: 150px;
    left: 150px;
    animation-delay: 4s;
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 15px;
}

.section-header p {
    font-size: 1.1rem;
    color: #666;
}

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

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

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

.stat-item i {
    font-size: 2rem;
    color: #007bff;
    margin-bottom: 10px;
}

.stat-item h4 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 5px;
}

.stat-item p {
    font-size: 0.9rem;
    color: #666;
    margin: 0;
}

.about-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 400px;
}

/* 移动端响应式调整 */
@media (max-width: 768px) {
    .tech-stack {
        grid-template-columns: repeat(3, 1fr);
        max-width: 400px;
        gap: 15px;
    }
    
    .stack-item {
        padding: 15px;
    }
    
    .stack-item i {
        font-size: 1.8rem;
        margin-bottom: 6px;
    }
    
    .stack-item span {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .tech-stack {
        gap: 12px;
    }
    
    .stack-item {
        padding: 12px;
    }
    
    .stack-item i {
        font-size: 1.8rem;
        margin-bottom: 6px;
    }
    
    .stack-item span {
        font-size: 0.85rem;
    }
}

.stack-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.stack-item:hover {
    background-color: #007bff;
    color: #fff;
    transform: translateY(-5px);
}

.stack-item i {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #007bff;
    transition: color 0.3s ease;
}

.stack-item:hover i {
    color: #fff;
}

/* 关于我们扩展样式 */
.about-intro {
    margin-bottom: 80px;
}

.about-history {
    margin-bottom: 80px;
}

.timeline {
    position: relative;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, #007bff, #0056b3);
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -11px;
    top: 5px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: #007bff;
    border: 4px solid #fff;
    box-shadow: 0 0 0 3px #007bff;
}

.timeline-date {
    font-size: 0.9rem;
    color: #007bff;
    font-weight: 600;
    margin-bottom: 8px;
}

.timeline-content h4 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 8px;
}

.timeline-content p {
    color: #666;
    margin: 0;
}

.about-mission {
    margin-bottom: 80px;
}

.about-mission h3 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 40px;
    text-align: center;
}

.mission-item {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

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

.mission-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 20px;
    font-size: 1.5rem;
    color: #fff;
}

.mission-content h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 10px;
    text-align: left;
}

.mission-content p {
    color: #666;
    margin: 0;
}

.about-team {
    margin-bottom: 80px;
}

.about-team h3 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.about-team p {
    text-align: center;
    color: #666;
    margin-bottom: 40px;
}

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

.team-member {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px;
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.member-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 20px;
}

.member-info {
    text-align: center;
}

.member-info h4 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 5px;
}

.member-info p {
    color: #666;
    margin: 0;
    line-height: 1.5;
}

.about-tech {
    margin-bottom: 40px;
}

.about-tech h3 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 40px;
    text-align: center;
}

/* 解决方案样式 */
.services {
    padding: 100px 0;
    background-color: #f8f9fa;
}

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

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

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: #fff;
}

.service-card h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 15px;
}

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

/* 行业解决方案页面样式 */
.solutions {
    padding: 150px 0 100px;
    background-color: #fff;
}

.solutions .section-header {
    text-align: center;
    margin-bottom: 60px;
}

.solutions .section-header h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 15px;
}

.solutions .section-header p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 解决方案分类 */
.solutions-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 80px;
}

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px 20px;
    background-color: #f8f9fa;
    border-radius: 15px;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    user-select: none;
}

.category-card:hover, .category-card.active {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: #fff;
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 123, 255, 0.3);
    border-color: #007bff;
}

.category-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #007bff;
    transition: color 0.3s ease;
}

.category-card:hover i {
    color: #fff;
}

.category-card h3 {
    font-size: 1.1rem;
    color: #333;
    transition: color 0.3s ease;
    margin: 0;
}

.category-card:hover h3 {
    color: #fff;
}

/* 解决方案详情 */
.solutions-details {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.solution-detail {
    display: flex;
    gap: 30px;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 15px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.solution-detail:hover, .solution-detail.active {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border-color: #007bff;
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.05), rgba(0, 86, 179, 0.05));
    transition: all 0.3s ease;
}

.solution-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2.5rem;
    color: #fff;
    flex-shrink: 0;
    margin-top: 10px;
}

.solution-content {
    flex: 1;
}

.solution-content h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 15px;
}

.solution-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.7;
}

.solution-content h4 {
    font-size: 1.2rem;
    color: #333;
    margin: 20px 0 10px;
}

.solution-content ul {
    list-style: none;
    padding-left: 20px;
    margin-bottom: 20px;
}

.solution-content ul li {
    color: #666;
    margin-bottom: 8px;
    position: relative;
}

.solution-content ul li::before {
    content: '✓';
    color: #007bff;
    font-weight: bold;
    position: absolute;
    left: -20px;
}

.solution-content p:last-child {
    margin-bottom: 0;
    font-style: italic;
    color: #555;
}

/* 行业覆盖样式 */
.industries {
    padding: 100px 0;
    background-color: #fff;
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
}

.industry-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 15px;
    transition: all 0.3s ease;
    text-align: center;
    min-height: 120px;
}

/* 移动端响应式调整 */
@media (max-width: 768px) {
    .industries {
        padding: 60px 0;
    }
    
    .industries-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
        gap: 15px;
    }
    
    .industry-card {
        padding: 20px 15px;
        min-height: 100px;
    }
    
    .industry-card i {
        font-size: 2rem;
        margin-bottom: 10px;
    }
    
    .industry-card h3 {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .industries-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }
    
    .industry-card {
        padding: 15px 10px;
        min-height: 90px;
    }
    
    .industry-card i {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }
    
    .industry-card h3 {
        font-size: 0.9rem;
    }
}

.industry-card:hover {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: #fff;
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 123, 255, 0.3);
}

.industry-card i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: #007bff;
    transition: color 0.3s ease;
}

.industry-card:hover i {
    color: #fff;
}

.industry-card h3 {
    font-size: 1.1rem;
    color: #333;
    transition: color 0.3s ease;
}

.industry-card:hover h3 {
    color: #fff;
}

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

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

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

.info-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border-radius: 15px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: #fff;
    flex-shrink: 0;
}

.info-text h4 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 10px;
}

.info-text p {
    color: #666;
    margin: 5px 0;
}

.contact-form {
    background-color: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.contact-form h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-size: 1rem;
    color: #333;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    color: #333;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-map {
    margin-bottom: 60px;
}

.contact-map h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 30px;
    text-align: center;
}

.map-placeholder {
    height: 400px;
    background-color: #f8f9fa;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 15px;
    font-size: 1.2rem;
    color: #666;
    border: 2px dashed #ddd;
}

.map-placeholder i {
    font-size: 3rem;
    color: #007bff;
}

.contact-branches h3 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 30px;
    text-align: center;
}

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

.branch-item {
    padding: 30px;
    background-color: #f8f9fa;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.branch-item h4 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 15px;
}

.branch-item p {
    color: #666;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 公司动态样式 */
.news {
    padding: 100px 0;
    background-color: #fff;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.news-item {
    background-color: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.news-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.news-image {
    height: 200px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3rem;
    color: #fff;
}

.news-content {
    padding: 25px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: #666;
}

.news-meta i {
    margin-right: 5px;
    color: #007bff;
}

.news-content h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 15px;
    flex: 1;
}

.news-content p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
}

.news-read-more {
    color: #007bff;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    transition: all 0.3s ease;
}

.news-read-more:hover {
    color: #0056b3;
    transform: translateX(5px);
}

.news-read-more i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.news-read-more:hover i {
    transform: translateX(3px);
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.pagination-item {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f8f9fa;
    color: #333;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.pagination-item:hover {
    background-color: #007bff;
    color: #fff;
}

.pagination-item.active {
    background-color: #007bff;
    color: #fff;
}

/* 成功案例样式 */
.cases {
    padding: 100px 0;
    background-color: #f8f9fa;
}

/* 案例筛选 */
.cases-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-bottom: 50px;
}

.filter-btn {
    padding: 12px 24px;
    background-color: #fff;
    color: #333;
    border: 2px solid #ddd;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background-color: #007bff;
    color: #fff;
    border-color: #007bff;
    transform: translateY(-2px);
}

.filter-btn.active {
    background-color: #007bff;
    color: #fff;
    border-color: #007bff;
}

/* 案例列表 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.case-card {
    background-color: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.case-image {
    height: 200px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3rem;
    color: #fff;
}

.case-content {
    padding: 25px;
}

.case-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    font-size: 0.9rem;
    color: #666;
}

.case-industry {
    background-color: #e9ecef;
    padding: 5px 12px;
    border-radius: 20px;
    font-weight: 500;
}

.case-content h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 15px;
}

.case-content p {
    color: #666;
    line-height: 1.7;
    margin-bottom: 20px;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.case-tags span {
    background-color: #e3f2fd;
    color: #007bff;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
}

.case-more {
    display: inline-flex;
    align-items: center;
    color: #007bff;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.case-more:hover {
    color: #0056b3;
    transform: translateX(5px);
}

.case-more i {
    margin-left: 5px;
}

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

.contact-content {
    display: flex;
    justify-content: space-between;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.info-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.info-item i {
    font-size: 1.5rem;
    color: #007bff;
    margin-right: 20px;
    margin-top: 5px;
}

.info-item h4 {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 5px;
}

.info-item p {
    color: #666;
    margin: 0;
}

.contact-form {
    flex: 1;
    background-color: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
}

.contact-form h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 10px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: #fff;
    padding: 80px 0 30px;
}

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

.footer-logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.footer-logo i {
    font-size: 2rem;
    color: #007bff;
    margin-bottom: 10px;
}

.footer-logo span {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.footer-logo p {
    color: #aaa;
    margin: 0;
}

.footer-links h4,
.footer-contact h4,
.footer-social h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #fff;
}

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

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

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

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

.footer-contact p {
    color: #aaa;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.footer-contact i {
    margin-right: 10px;
    color: #007bff;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    background-color: #444;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background-color: #007bff;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #444;
    color: #aaa;
}

/* 人工智能在线客服样式 */
.chatbot-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.chatbot-toggle {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.3);
    transition: all 0.3s ease;
}

.chatbot-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(0, 123, 255, 0.4);
}

.chatbot-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 350px;
    max-height: 500px;
    background-color: #fff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: none;
    flex-direction: column;
    overflow: hidden;
}

.chatbot-window.active {
    display: flex;
}

.chatbot-header {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: #fff;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-header h4 {
    margin: 0;
    font-size: 1.1rem;
}

.chatbot-close {
    background: none;
    border: none;
    color: #fff;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.chatbot-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.chatbot-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.bot-message,
.user-message {
    display: flex;
    align-items: flex-start;
}

.bot-message {
    justify-content: flex-start;
}

.user-message {
    justify-content: flex-end;
}

.message-content {
    max-width: 70%;
    padding: 12px 18px;
    border-radius: 18px;
    font-size: 0.95rem;
    line-height: 1.5;
}

.bot-message .message-content {
    background-color: #f8f9fa;
    color: #333;
    border-bottom-left-radius: 5px;
}

.user-message .message-content {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: #fff;
    border-bottom-right-radius: 5px;
}

.chatbot-input {
    display: flex;
    padding: 15px;
    border-top: 1px solid #eee;
    gap: 10px;
}

.chatbot-input input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 25px;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.chatbot-input input:focus {
    border-color: #007bff;
}

.chatbot-input button {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
}

.chatbot-input button:hover {
    transform: scale(1.1);
}

/* 动画效果 */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        margin-bottom: 50px;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-stack {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .hero {
        padding: 120px 0 80px;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .tech-stack {
        grid-template-columns: repeat(3, 1fr);
        max-width: 350px;
        gap: 12px;
    }
    
    .industries-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    
    .cases-slider {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        padding: 25px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .chatbot-window {
        width: 300px;
    }
}