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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    font-size: 16px;
}

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

/* 图片响应式 */
.img-responsive {
    max-width: 100%;
    height: auto;
    display: block;
}
 
/* 标题样式 */
.section-title {
    font-size: 2.2rem;
    color: #333;
    margin-bottom: 1.5rem;
    position: relative;
    font-weight: normal;
    letter-spacing: -0.5px;
    border-left: 5px solid #3182ce;
    line-height: 1.2;
    padding-left: 15px;
}

/* .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #3182ce, #4299e1);
    border-radius: 2px;
} */

.section-title.text-center {
    text-align: center;
}

.section-title.text-center::after {
    left: 50%;
    transform: translateX(-50%);
}

/* 全屏样式 - 移除区块背景和边框 */
.tab-contents {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 0;
}

/* 为内容区块设置适当的内边距但不添加背景和阴影 */
.company-overview,
.services-grid,
.advantages,
.philosophy,
.team,
.mission,
.vision,
.values-grid,
.spirit,
.timeline,
.environment-intro,
.gallery,
.branches,
.contact-container {
    padding: 30px 0;
    margin-bottom: 0;
    background: none;
    box-shadow: none;
    border-radius: 0;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(135deg, #3182ce, #4299e1);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 10px rgba(49, 130, 206, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2c5282, #3182ce);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(49, 130, 206, 0.35);
}

/* 顶部导航 - 优化版 */
.header {
    background: white;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.05);
    position: relative;
    z-index: 1000;
}

.top-bar {
    background: #1a365d;
    color: white;
    padding: 10px 0;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left p {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 300;
}

.top-bar-right {
    display: flex;
    gap: 20px;
    align-items: center;
}

.contact-link, .login-link {
    color: white;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 400;
    transition: all 0.3s ease;
    padding: 5px 10px;
    border-radius: 4px;
}

.contact-link:hover, .login-link:hover {
    color: #3182ce;
    background: rgba(255, 255, 255, 0.1);
}

.main-nav {
    padding: 20px 0;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 1);
}

.main-nav.scrolled {
    padding: 10px 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    max-width: 260px;
    transition: transform 0.3s ease;
}

.main-nav.scrolled .logo img {
    transform: scale(0.95);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #1a365d;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-toggle:hover {
    background: #f7fafc;
    color: #3182ce;
}

.nav-menu {
    display: flex;
    gap: 10px;
    list-style: none;
}

.nav-link {
    display: block;
    padding: 12px 20px;
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    border-radius: 6px;
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: #3182ce;
    background: #ebf8ff;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20px;
    right: 20px;
    height: 3px;
    background: #3182ce;
    border-radius: 2px;
}

/* 英雄区域 - 优化版 */
.hero-section {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../images/jybg3.jpg') center/cover no-repeat;
    opacity: 0.15;
    z-index: 0;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.9) 0%, rgba(44, 82, 130, 0.95) 100%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 3.2rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.25rem;
    margin: 0 auto 2rem;
    opacity: 0.95;
    font-weight: 300;
    line-height: 1.7;
}

/* 面包屑导航 */
.breadcrumb {
    background: white;
    padding: 15px 0;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.breadcrumb a {
    color: #3182ce;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: #2c5282;
    text-decoration: underline;
}

.breadcrumb span {
    margin: 0 10px;
    color: #718096;
}

/* 主要内容 */
.main-content {
    padding: 50px 0;
}

/* Tab样式 - 优化版 */
.about-tabs {
    overflow: hidden;

}

.tabs-container {
    border-bottom: 2px solid #e2e8f0;
    display: flex;
    justify-content: center;
}

.tabs-nav {
    display: flex;
    list-style: none;
    flex-wrap: wrap;
}
.tabs-nav li { 
    padding: 0 20px;
}
.tab-btn {
    padding: 16px 20px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    color: #4a5568;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
    flex: 1;
    text-align: center;
}

.tab-btn:hover {
    color: #3182ce;
    background: rgba(49, 130, 206, 0.05);
}

.tab-btn.active {
    color: #3182ce;
    border-bottom-color: #3182ce;
    background: white;
}

.tab-contents {
    padding: 80px 0;
}

.tab-content {
    display: none;
    /* 移除默认的向上动画效果 */
}

.tab-content.active {
    display: block;
}
.products {
    background: #f7fafc;
    padding: 80px 0;
}

.advantages {

    padding: 80px 0;
}

.philosophy {
    padding: 80px 0;
}

.team {
    background: #f7fafc;
    padding: 80px 0;
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 公司简介样式 - 优化版 */
.company-overview {
    display: flex;
    gap: 40px;
    margin-bottom: 50px;
    align-items: center;
    flex-wrap: wrap;
}

.overview-content {
    flex: 1;
    min-width: 300px;
}

.overview-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 1.5rem;
    font-weight: 400;
}

.overview-image {
    flex: 1;
    min-width: 300px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    transform: perspective(1px) scale(1);
    transition: transform 0.5s ease;
}

.overview-image:hover {
    transform: perspective(1px) scale(1.02);
}

.overview-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 产品和服务 - 优化版 */
.services-section {
    margin-bottom: 60px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.service-card {
    background: white;
    padding: 35px 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.4s ease;
    border: 2px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}



.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #3182ce;
}

/* 移除上边框动画效果 */
.service-card::before {
    transform: translateX(0);
}

.service-icon {
    font-size: 3rem;
    color: #3182ce;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.3rem;
    color: #1a365d;
    margin-bottom: 15px;
    font-weight: 600;
}

.service-card p {
    color: #4a5568;
    line-height: 1.7;
    font-size: 0.95rem;
}

/* 优势和理念 - 优化版 */
.advantages, .spirit, .branches {
    padding: 40px;
    border-radius: 12px;
    margin-bottom: 40px;
}

/* 左文右图布局样式 */
.philosophy-wrapper,
.team-wrapper {
    display: flex;
    align-items: center;
    gap: 30px;
    flex-wrap: wrap;
}

.philosophy-content,
.team-content {
    flex: 1;
    min-width: 300px;
}

.philosophy-image,
.team-image {
    flex: 1;
    min-width: 300px;
    text-align: right;
}

.philosophy-image img,
.team-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .philosophy-wrapper,
    .team-wrapper {
        flex-direction: column;
    }
    
    .philosophy-image,
    .team-image {
        text-align: center;
        order: -1; /* 在移动设备上图片在上，文字在下 */
    }
}

.advantages h3, .spirit h3, .branches h3 {
    color: #1a365d;
    margin-bottom: 15px;
    font-size: 1.5rem;
    font-weight: 600;
}

.advantages p, .spirit p, .branches p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}

.philosophy {
    display: flex;
    gap: 40px;
    margin-bottom: 50px;
    flex-wrap: wrap;
    align-items: center;
}

.philosophy-content {
    flex: 1;
    min-width: 300px;
}

.philosophy-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 20px;
}

.philosophy-image {
    flex: 1;
    min-width: 300px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    transform: perspective(1px) scale(1);
    transition: transform 0.5s ease;
}

.philosophy-image:hover {
    transform: perspective(1px) scale(1.02);
}

.philosophy-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 团队 - 优化版 */
.team {
    display: flex;
    gap: 40px;
    align-items: center;
    flex-wrap: wrap;
}

.team-image {
    flex: 1;
    min-width: 300px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    transform: perspective(1px) scale(1);
    transition: transform 0.5s ease;
    margin: 30px 0;
}

.team-image:hover {
    transform: perspective(1px) scale(1.02);
}

.team-image img {
    width: 100%;
    height: auto;
    display: block;
}

.team-content {
    flex: 1;
    min-width: 300px;
}

.team-content h3 {
    color: #1a365d;
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 600;
}

.team-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 20px;
}

/* 企业文化样式 - 优化版 */
.mission, .vision {
    background: #f7fafc;
    padding: 40px;
    border-radius: 12px;
    margin-bottom: 40px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.mission h3, .vision h3 {
    color: #1a365d;
    margin-bottom: 15px;
    font-size: 1.5rem;
    font-weight: 600;
}

.mission p, .vision p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}

.values-section {
    margin-bottom: 50px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .values-grid {
        grid-template-columns: 1fr;
    }
}

.value-card {
    background: white;
    padding: 20px 15px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid #e2e8f0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #3182ce, #4299e1);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    border-color: #3182ce;
}

.value-card:hover::before {
    transform: translateX(0);
}

.value-icon {
    font-size: 2rem;
    color: #3182ce;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

.value-card:hover .value-icon {
    transform: scale(1.1);
}

.value-card h3 {
    font-size: 1.1rem;
    color: #1a365d;
    margin-bottom: 10px;
    font-weight: 600;
}

.value-card p {
    font-size: 0.85rem;
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 0;
}

/* 发展历程样式 - 优化版 */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 30px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 60px;
    width: 3px;
    height: 100%;
    background: linear-gradient(to bottom, #3182ce, #4299e1);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    padding-left: 130px;
    padding-bottom: 50px;
}

.timeline-item:last-child {
    padding-bottom: 0;
    margin-bottom: 0;
}

.timeline-year {
    position: absolute;
    left: 0;
    top: 0;
    background: linear-gradient(135deg, #3182ce, #4299e1);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1rem;
    min-width: 100px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(49, 130, 206, 0.3);
    z-index: 1;
}

/* 手机端响应式调整 */
@media (max-width: 768px) {
    .timeline::before {
        display: none;
    }
    
    .timeline-item {
        padding-left: 0;
        padding-bottom: 30px;
    }
    
    .timeline-year {
        position: relative;
        left: auto;
        top: auto;
        margin-bottom: 20px;
        display: inline-block;
    }
    
    .timeline-content {
        border-left: none;
        border-top: 4px solid #3182ce;
    }
}

/* .timeline-item::before {
    content: '';
    position: absolute;
    left: 54px;
    top: 28px;
    width: 15px;
    height: 15px;
    background: white;
    border: 3px solid #3182ce;
    border-radius: 50%;
    z-index: 2;
} */

.timeline-content {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid #3182ce;
    transition: transform 0.3s ease;
}

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

.timeline-content h3 {
    color: #1a365d;
    margin-bottom: 15px;
    font-size: 1.3rem;
    font-weight: 600;
}

.timeline-content p {
    color: #4a5568;
    line-height: 1.7;
    font-size: 1.05rem;
    margin-bottom: 0;
}

/* 办公环境样式 - 优化版 */
.environment-intro {
    background: #f7fafc;
    padding: 40px;
    border-radius: 12px;
    margin-bottom: 40px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.environment-intro h3 {
    color: #1a365d;
    margin-bottom: 15px;
    font-size: 1.5rem;
    font-weight: 600;
}

.environment-intro p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #4a5568;
    margin-bottom: 15px;
}

.gallery {
    margin-bottom: 50px;
}

.gallery-grid {
    display: grid;
     grid-template-columns: repeat(4, 1fr); 
    margin-top: 30px;
}

.gallery-item {
    overflow: hidden;
    transition: all 0.4s ease;
    position: relative;
    background: white;
}

.gallery-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.gallery-img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: transform 0.5s ease;
}



.gallery-caption {
    padding: 20px;
    text-align: center;
    background: white;
    font-weight: 600;
    color: #1a365d;
    font-size: 1.1rem;
}

/* 国际网点 - 优化版 */
.branch-section {
    margin-bottom: 50px;
}

.branch-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.branch-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.branch-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: #3182ce;
}

.branch-card h3 {
    color: #1a365d;
    margin-bottom: 15px;
    font-size: 1.3rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.branch-card p {
    color: #4a5568;
    line-height: 1.7;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

/* 联系我们样式 - 优化版 */
.contact-container {
    display: flex;
    gap: 50px;
    flex-wrap: wrap;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-details {
    padding: 40px;
    margin-bottom: 30px;  
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.contact-item i {
    font-size: 1.8rem;
    color: #3182ce;
    min-width: 40px;
    margin-top: 3px;
    background: #ebf8ff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.contact-item:hover i {
    background: #3182ce;
    color: white;
    transform: scale(1.1);
}

.contact-item strong {
    color: #1a365d;
    display: block;
    margin-bottom: 8px;
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-item p {
    color: #4a5568;
    line-height: 1.6;
    margin: 0;
}

.contact-item a {
    color: #3182ce;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: #2c5282;
    text-decoration: underline;
}

.contact-cta {
    background: linear-gradient(135deg, #1a365d, #2c5282);
    color: white;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(26, 54, 93, 0.2);
}

.contact-cta h3 {
    margin-bottom: 20px;
    font-size: 1.8rem;
    font-weight: 600;
}

.contact-cta p {
    margin-bottom: 30px;
    opacity: 0.95;
    font-size: 1.1rem;
    line-height: 1.7;
}

.contact-gallery {
    flex: 1;
    min-width: 300px;
}

.contact-gallery h3 {
    color: #1a365d;
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 600;
}

.gallery-row {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.gallery-row:last-child {
    margin-bottom: 0;
}

.gallery-thumb {
    flex: 1;
    min-width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 3px solid white;
}

.gallery-thumb:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

/* 留言表单样式 */
.contact-form {
    flex: 1;
    min-width: 300px;
    background: white;
    padding: 30px;
    border: 1px solid #e2e8f0;
}

.contact-form h3 {
    color: #1a365d;
    margin-bottom: 25px;
    font-size: 1.4rem;
    font-weight: 600;
    border-bottom: 2px solid #3182ce;
    padding-bottom: 10px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2d3748;
    font-size: 0.95rem;
}

.form-group .required {
    color: #e53e3e;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #e2e8f0;
    font-size: 1rem;
    color: #2d3748;
    background-color: #f9fafb;
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3182ce;
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
    background-color: white;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #a0aec0;
}

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

.btn-primary {
    display: inline-block;
    background: linear-gradient(135deg, #3182ce, #4299e1);
    color: white;
    padding: 12px 30px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    text-align: center;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2c5282, #2b6cb0);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(49, 130, 206, 0.3);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .contact-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .contact-form {
        padding: 20px;
    }
    
    .btn-primary {
        width: 100%;
    }
}

/* 服务亮点 - 优化版 */
.highlights-section {
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 100%);
    padding: 80px 0;
    margin: 60px 0;
}

.highlights-section .container {
    position: relative;
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.highlight-card {
    background: white;
    padding: 50px 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

.highlight-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #3182ce, #4299e1);
}

.highlight-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.highlight-icon {
    font-size: 3.5rem;
    color: #3182ce;
    margin-bottom: 30px;
    transition: transform 0.3s ease;
    display: inline-block;
}

.highlight-card:hover .highlight-icon {
    transform: scale(1.1) rotate(5deg);
}

.highlight-card h3 {
    color: #1a365d;
    margin-bottom: 20px;
    font-size: 1.5rem;
    font-weight: 600;
}

.highlight-card p {
    color: #4a5568;
    line-height: 1.7;
    font-size: 1rem;
    margin-bottom: 0;
}

/* 客户案例 - 优化版 */
.cases-section {
    padding: 80px 0;
    background: white;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 35px;
    margin-top: 50px;
}

.case-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.4s ease;
    height: 250px;
    border: 1px solid #e2e8f0;
}

.case-card:hover {
    transform: translateY(-12px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card:hover .case-img {
    transform: scale(1.1);
}

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(26, 54, 93, 0.95), rgba(26, 54, 93, 0));
    padding: 40px 20px 20px;
    color: white;
    transition: all 0.4s ease;
}

.case-card:hover .case-overlay {
    background: linear-gradient(to top, rgba(26, 54, 93, 1), rgba(26, 54, 93, 0.3));
}

.case-card h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 600;
    text-align: center;
}

/* 页脚 - 优化版 */
.footer {
    background: #1a365d;
    color: white;
    padding: 80px 0 40px;
    position: relative;
}

.footer-top {
    display: flex;
    gap: 50px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.footer-info {
    flex: 1;
    min-width: 300px;
}

.footer-info h3 {
    margin-bottom: 20px;
    font-size: 1.8rem;
    font-weight: 700;
}

.footer-info p {
    margin-bottom: 15px;
    opacity: 0.8;
    line-height: 1.7;
    font-size: 1.05rem;
}

.footer-phone {
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    margin: 20px 0;
    display: block;
    transition: color 0.3s ease;
}
.footer-info p a.footer-email {
    color: #ffffff !important;
    text-decoration: none;
    display: inline;
}
.footer-phone:hover {
    color: #4299e1;
}

.footer-links {
    flex: 2;
    min-width: 300px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.link-group h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
    position: relative;
    padding-bottom: 10px;
    font-weight: normal;
}



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

.link-group li {
    margin-bottom: 12px;
}

.link-group a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    padding-left: 10px;
}

.link-group a:hover {
    opacity: 1;
    color: #3182ce;
    padding-left: 15px;
}

.link-group a::before {
    content: '→';
    position: absolute;
    left: 0;
    opacity: 0;
    transition: opacity 0.3s ease, left 0.3s ease;
}

.link-group a:hover::before {
    opacity: 1;
    left: 3px;
}

.weixin-qr {
    text-align: center;
    min-width: 150px;
}

.weixin-qr img {
    border-radius: 12px;
    margin-bottom: 15px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.3s ease;
}

.weixin-qr img:hover {
    transform: scale(1.05);
}

.weixin-qr p {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    margin-bottom: 15px;
    opacity: 0.7;
    font-size: 0.95rem;
    line-height: 1.6;
}

.footer-bottom a {
    color: #3182ce;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: #4299e1;
    text-decoration: underline;
}

/* 在线客服 - 优化版 */
.online-service {
    position: fixed;
    right: 30px;
    bottom: 120px;
    z-index: 999;
}

.service-toggle {
    width: 65px;
    height: 65px;
    background: linear-gradient(135deg, #3182ce, #4299e1);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(49, 130, 206, 0.4);
    transition: all 0.4s ease;
    border: none;
    outline: none;
}

.service-toggle:hover {
    background: linear-gradient(135deg, #2c5282, #3182ce);
    transform: scale(1.1);
    box-shadow: 0 8px 25px rgba(49, 130, 206, 0.5);
}

.service-toggle:active {
    transform: scale(1);
}

.service-content {
    position: absolute;
    right: 85px;
    bottom: 0;
    background: white;
    border-radius: 12px;
    width: 300px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateX(30px);
    transition: all 0.4s ease;
    border: 1px solid #e2e8f0;
}

.service-content.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.service-header {
    background: linear-gradient(135deg, #3182ce, #4299e1);
    color: white;
    padding: 20px 25px;
    border-radius: 12px 12px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.service-header h4 {
    margin: 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.service-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.4rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 4px;
    transition: all 0.3s ease;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.service-body {
    padding: 25px;
}

.service-list {
    list-style: none;
}

.service-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #e2e8f0;
}

.service-list li:last-child {
    border-bottom: none;
}

.service-list span {
    font-weight: 500;
    color: #4a5568;
}

.service-list a {
    color: #3182ce;
    font-size: 1.8rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.service-list a:hover {
    color: #2c5282;
    transform: scale(1.1);
}

/* 返回顶部 - 优化版 */
.back-to-top {
    position: fixed;
    right: 30px;
    bottom: 30px;
    width: 55px;
    height: 55px;
    background: linear-gradient(135deg, #3182ce, #4299e1);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    cursor: pointer;
    border: none;
    box-shadow: 0 6px 20px rgba(49, 130, 206, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 999;
    outline: none;
}

.back-to-top:hover {
    background: linear-gradient(135deg, #2c5282, #3182ce);
    transform: translateY(-8px);
    box-shadow: 0 8px 25px rgba(49, 130, 206, 0.5);
}

.back-to-top.fadeIn {
    opacity: 1;
    visibility: visible;
}

.back-to-top:active {
    transform: translateY(0);
}
.contactUs-container{
    display: flex;
}
.contactUs-container img {
    max-width: 100%;    
}
/* 响应式设计 - 优化版 */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
    
    .hero-content h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.15rem;
    }
    
    .company-overview,
    .philosophy,
    .team,
    .contact-container {
        flex-direction: column;
    }
    
    .footer-top {
        gap: 30px;
    }
    
    .highlight-card,
    .case-card {
        margin-bottom: 20px;
    }
    .contactUs-container {
    flex-direction: column;
}
}

@media (max-width: 768px) {
    .container {
        max-width: 540px;
        padding: 0 15px;
    }
    
    .top-bar .container {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .nav-menu {
        position: fixed;
        top: 136px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        align-items: center;
        padding: 30px 0;
        gap: 0;
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        opacity: 0;
        /* visibility: hidden; */
        transform: translateY(-20px);
        transition: all 0.4s ease;
        z-index: 999;
    }
    .nav-menu li {
        display: none;
    }
    .nav-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
     .nav-menu.active li {
        display: block;
    }
    .nav-toggle {
        display: block;
    }
    
    .nav-link {
        width: 100%;
        text-align: center;
        border-radius: 0;
    }
    
    .hero-section {
        padding: 100px 0 60px;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .tabs-nav {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
        text-align: left;
        padding: 15px 20px;
        border-bottom: 1px solid #e2e8f0;
    }
    
    .tab-contents {
        padding: 30px 20px;
    }
    
    .timeline::before {
        left: 45px;
    }
    
    /* .timeline-item {
        padding-left: 110px;
    } */
    
    .timeline-year {
        min-width: 80px;
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .timeline-item::before {
        left: 39px;
        top: 25px;
        width: 12px;
        height: 12px;
    }
    
    .footer-top {
        flex-direction: column;
    }
    
    .footer-links {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .service-content {
        width: 280px;
    }
    
    .online-service,
    .back-to-top {
        right: 20px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .services-grid,
    .values-grid,
    .highlights-grid,
    .cases-grid,
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .service-card,
    .value-card,
    .highlight-card,
    .case-card,
   {
        margin-bottom: 20px;
    }
    
    .services-section,
    .values-section,
    .gallery,
    .branch-section,
    .contact-details,
    .advantages,
    .spirit,
    .branches,
    .mission,
    .vision,
    .environment-intro {
        padding: 30px 20px;
    }
    
    .contact-item {
        align-items: center;
    }
    
    .contact-item i {
        margin-bottom: 15px;
    }
    
    .gallery-thumb {
        min-width: 80px;
        height: 80px;
    }
    
    .service-toggle {
        width: 55px;
        height: 55px;
        font-size: 1.5rem;
    }
    
    .back-to-top {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }
    
    .service-content {
        width: 250px;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        top: 144px;
    }
    
    .main-nav.scrolled {
        padding: 15px 0;
    }
    
    .logo img {
        max-width: 200px;
    }
    
    .service-content {
        position: fixed;
        top: 50%;
        left: 50%;
        right: auto;
        bottom: auto;
        transform: translate(-50%, -50%);
        width: 280px;
        z-index: 1000;
    }
    
    .case-card {
        height: 200px;
    }
    
    .footer-bottom p {
        font-size: 0.85rem;
    }
}