:root {
    --primary-blue: #1b494f;
    --secondary-orange: #e84f25;
    --light-gray: #f5f7fa;
    --dark-gray: #333;
    --medium-gray: #666;
    --white: #fff;
}

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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    color: var(--dark-gray);
    line-height: 1.5;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1360px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    color: var(--primary-blue);
    margin-bottom: 20px;
    text-align: center;
    position: relative;
}

.section-title:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--secondary-orange);
    margin: 15px auto 0;
}

.section-subtitle {
    font-size: 18px;
    color: var(--medium-gray);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
}

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

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-weight: bold;
    color: var(--primary-blue);
}

.logo img {
    max-width: 240px;
}

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

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

.nav-links a {
    font-weight: 500;
    position: relative;
}

.nav-links a.active {
    padding-bottom: 10px;
    border-bottom: 2px solid var(--secondary-orange);
}

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

.nav-links a:not(.active):after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: var(--secondary-orange);
    bottom: -12px;
    left: 0;
    transition: width 0.3s ease;
}

.nav-links a:hover:after {
    width: 100%;
}

/* 移动端导航 */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }
}

/* 添加移动端样式 */
.mobile-menu-toggle {
    display: none; /* 默认隐藏切换按钮 */
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block; /* 移动端显示切换按钮 */
        background: none;
        border: none;
        padding: 12px;
        cursor: pointer;
    }

    .hamburger {
        display: block;
        width: 25px;
        height: 2px;
        background: #333;
        position: relative;
        transition: all 0.3s;
    }

    .hamburger::before,
    .hamburger::after {
        content: '';
        position: absolute;
        width: 100%;
        height: 100%;
        background: inherit;
        transition: inherit;
    }

    .hamburger::before { top: -8px }
    .hamburger::after { top: 8px }

    .nav-links {
        display: none; /* 移动端默认隐藏菜单 */
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 100%;
        left: 0;
        background: white;
        padding: 1rem;
        box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    }

    .nav-links.active {
        display: flex; /* 显示激活的菜单 */
    }

    /* 汉堡菜单动画 */
    .mobile-menu-toggle[aria-expanded="true"] .hamburger {
        background: transparent;
    }
    .mobile-menu-toggle[aria-expanded="true"] .hamburger::before {
        transform: rotate(45deg);
        top: 0;
        background: #005bac;
    }
    .mobile-menu-toggle[aria-expanded="true"] .hamburger::after {
        transform: rotate(-45deg);
        top: 0;
        background: #005bac;
    }
}



/* 页脚样式 */
footer {
    background-color: var(--dark-gray);
    color: var(--white);
    padding: 60px 0 20px;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.footer-col h3 {
    font-weight: normal;
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--secondary-orange);
}

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

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

.footer-links a:hover {
    color: var(--secondary-orange);
}

.footer-links i {
    margin-right: 8px;
    width: 20px;
    text-align: center;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
}

.copyright > a {
    display: inline-block;
    width: 35px;
    height: 35px;
    line-height: 35px;
    text-align: center;
    border: 1px var(--white) solid;
    font-size: 1.4em;
    border-radius: 5px;
    margin-right: 10px;
    margin-bottom: 10px;
}

.copyright > a:hover {
    background: var(--white);
    color: var(--secondary-orange);
    border: 1px var(--primary-blue) solid;
}

@media (max-width: 992px) {
    .footer-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .footer-container {
        grid-template-columns: 1fr;
    }
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: bold;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--secondary-orange);
    color: var(--white);
    border: 2px solid var(--secondary-orange);
}

.btn-primary:hover {
    background-color: transparent;
    color: var(--secondary-orange);
}

.btn-outline {
    background-color: var(--primary-blue);
    color: var(--white);
    border: 2px solid var(--primary-blue)
}

.btn-outline:hover {
    background-color: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

/* 按钮大小变体 */
.btn-lg {
    padding: 15px 40px;
    font-size: 18px;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
}

/* 首页特有样式 */
.hero {
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.5)), url('../img/content/index-slider.png') no-repeat center center/cover;
    height: 100vh;
    color: var(--white);
    display: flex;
    align-items: center;
    text-align: center;
    padding-top: 80px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 数据展示 */
.stats {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 60px 0;
}

.stats-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    font-size: 42px;
    font-weight: bold;
    color: var(--secondary-orange);
    margin-bottom: 10px;
}

.stat-label {
    font-size: 16px;
}

/* 服务概览 */
.services {
    background-color: var(--light-gray);
}

.services-container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    padding: 30px 20px;
}

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

.service-icon {
    font-size: 50px;
    color: var(--secondary-orange);
    margin-bottom: 20px;
}

.service-title {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.service-desc {
    color: var(--medium-gray);
    margin-bottom: 20px;
}

/* 案例展示 */
.cases-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.case-card {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    height: 300px;
}

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

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 51, 102, 0.9), transparent);
    padding: 30px;
    color: var(--white);
    transform: translateY(100px);
    transition: transform 0.3s ease;
}

.case-card:hover .case-overlay {
    transform: translateY(0);
}

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

.case-title {
    font-size: 24px;
    margin-bottom: 10px;
}

/* 行动号召 */
.cta {
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.8));
    color: var(--white);
    text-align: center;
    padding: 100px 0;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 40px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .stats-container, .services-container {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .hero-content {
        padding: 0 10px;
    }

    .cases-container {
        grid-template-columns: 1fr;
    }

    .hero-btns {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 576px) {
    .stats-container, .services-container {
        grid-template-columns: 1fr;
    }
}

/* 关于我们页面特有样式 */

/* 页面标题区 */
.page-header {
    height: 420px;
    color: var(--white);
    text-align: center;
    padding: 120px 0 80px;
    margin-top: 80px;
}

.page-header.about {
    padding: 160px 0 80px;
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.5)), url('../img/content/about-banner.png') no-repeat center center/cover;
}

.page-header.contact {
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.5)), url('../img/content/contact-banner.png') no-repeat center center/cover;
}

.page-header.services {
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.5)), url('../img/content/services-banner.png') no-repeat center center/cover;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-header.about h1 {
    font-size: 60px;
}

.page-header p {
    font-size: 20px;
    opacity: 0.9;
}

/* 公司简介 */
.company-intro {
    background-color: var(--white);
}

.intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.intro-content p {
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
}

.intro-image {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.intro-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.intro-image:hover img {
    transform: scale(1.05);
}

/* 发展历程 */
.timeline-section {
    background-color: var(--light-gray);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 0;
}

.timeline:before {
    content: '';
    position: absolute;
    width: 4px;
    background-color: var(--secondary-orange);
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.timeline-item {
    padding: 20px 0;
    position: relative;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    padding-right: 50px;
    text-align: right;
    left: 0;
}

.timeline-item:nth-child(even) {
    padding-left: 50px;
    text-align: left;
    left: 50%;
}

.timeline-year {
    background-color: var(--secondary-orange);
    color: var(--white);
    font-weight: bold;
    padding: 8px 15px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 15px;
}

.timeline-content {
    background-color: var(--white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.timeline-content h3 {
    color: var(--primary-blue);
    margin-bottom: 10px;
}

/* 核心优势 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.advantage-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-10px);
}

.advantage-icon {
    font-size: 40px;
    color: var(--secondary-orange);
    margin-bottom: 20px;
}

.advantage-card h3 {
    margin-bottom: 15px;
    color: var(--primary-blue);
}

/* 全球网络 */
.global-network {
    background-color: var(--white);
}

.network-map {
    position: relative;
    margin-top: 50px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    height: 500px;
}

.network-map img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.network-point {
    position: absolute;
    transform: translate(-50%, -50%);
}

.point-marker {
    width: 20px;
    height: 20px;
    background-color: var(--secondary-orange);
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--secondary-orange);
    cursor: pointer;
    transition: all 0.3s ease;
}

.point-marker:hover {
    transform: scale(1.5);
}

.point-info {
    position: absolute;
    background-color: var(--white);
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.point-info h4 {
    color: var(--primary-blue);
    margin-bottom: 5px;
}

.network-point:hover .point-info {
    opacity: 1;
    visibility: visible;
}

.network-point:nth-child(odd) .point-info {
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
}

.network-point:nth-child(even) .point-info {
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
}

/* 管理团队 */
.team-section {
    background-color: var(--light-gray);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.team-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease;
}

.team-card:hover {
    transform: translateY(-10px);
}

.team-photo {
    height: 250px;
    overflow: hidden;
}

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

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

.team-card h3 {
    margin: 20px 0 5px;
    color: var(--primary-blue);
}

.position {
    color: var(--secondary-orange);
    font-weight: bold;
    margin-bottom: 15px;
}

.bio {
    padding: 0 20px 20px;
    font-size: 14px;
    color: var(--medium-gray);
}

/* 企业文化 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.culture-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.culture-card:hover {
    transform: translateY(-10px);
}

.culture-icon {
    font-size: 40px;
    color: var(--secondary-orange);
    margin-bottom: 20px;
}

.culture-card h3 {
    margin-bottom: 15px;
    color: var(--primary-blue);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .intro-grid {
        grid-template-columns: 1fr;
    }

    .intro-image {
        order: -1;
    }

    .advantages-grid, .team-grid, .culture-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .timeline:before {
        left: 30px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 80px;
        padding-right: 0;
        text-align: left;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 60px;
    }

    .page-header h1 {
        font-size: 36px;
    }
}

@media (max-width: 576px) {
    .advantages-grid, .team-grid, .culture-grid {
        grid-template-columns: 1fr;
    }

    .network-point .point-info {
        width: 150px;
        font-size: 14px;
    }
}

/* 服务与解决方案页面特有样式 */

/* 页面标题区 */
.page-header {
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.8)), url('../images/services-bg.jpg') no-repeat center center/cover;
    color: var(--white);
    text-align: center;
    padding: 120px 0 80px;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 20px;
    opacity: 0.9;
}

/* 服务概览 */
.services-tabs {
    margin-top: 50px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.tab-buttons {
    display: flex;
    background-color: var(--light-gray);
}

.tab-btn {
    flex: 1;
    padding: 20px;
    border: none;
    background: none;
    font-size: 18px;
    font-weight: bold;
    color: var(--medium-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.tab-btn:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--secondary-orange);
    transition: height 0.3s ease;
}

.tab-btn.active {
    color: var(--primary-blue);
    background-color: var(--white);
}

.tab-btn.active:after {
    height: 4px;
}

.tab-btn:hover:not(.active) {
    color: var(--primary-blue);
    background-color: rgba(255, 255, 255, 0.7);
}

.tab-content {
    display: none;
    background-color: var(--white);
    padding: 40px;
}

.tab-content.active {
    display: block;
}

.tab-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.tab-text h3 {
    font-size: 28px;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.tab-text p {
    margin-bottom: 25px;
    line-height: 1.8;
}

.service-features {
    margin-bottom: 30px;
}

.service-features li {
    list-style: none;
    margin-bottom: 10px;
    position: relative;
    padding-left: 30px;
}

.service-features i {
    color: var(--secondary-orange);
    position: absolute;
    left: 0;
    top: 3px;
}

.tab-image {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.tab-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.tab-image:hover img {
    transform: scale(1.05);
}

/* 物流服务详情 */
.logistics-detail {
    background-color: var(--light-gray);
}

.logistics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.logistics-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.logistics-card:hover {
    transform: translateY(-10px);
}

.logistics-icon {
    font-size: 50px;
    color: var(--secondary-orange);
    margin-bottom: 20px;
}

.logistics-card h3 {
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.logistics-card p {
    margin-bottom: 20px;
    color: var(--medium-gray);
}

.logistics-card ul {
    text-align: left;
    margin-bottom: 25px;
    padding-left: 20px;
}

.logistics-card li {
    list-style: none;
    margin-bottom: 8px;
    position: relative;
}

.logistics-card li:before {
    content: '•';
    color: var(--secondary-orange);
    font-weight: bold;
    position: absolute;
    left: -15px;
}

/* 仓储服务详情 */
.warehousing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.warehousing-card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.warehousing-image {
    height: 100%;
}

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

.warehousing-card:hover .warehousing-image img {
    transform: scale(1.05);
}

.warehousing-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
}

.warehousing-content h3 {
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.warehousing-content p {
    margin-bottom: 20px;
    color: var(--medium-gray);
}

.warehousing-content ul {
    margin-bottom: 25px;
    flex-grow: 1;
}

.warehousing-content li {
    list-style: none;
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.warehousing-content li:before {
    content: '•';
    color: var(--secondary-orange);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* 行业解决方案 */
.industry-solutions {
    background-color: var(--white);
}

.industry-tabs {
    margin-top: 50px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.industry-tab-buttons {
    display: flex;
    background-color: var(--light-gray);
    flex-wrap: wrap;
}

.industry-tab-btn {
    padding: 15px 25px;
    border: none;
    background: none;
    font-size: 16px;
    font-weight: bold;
    color: var(--medium-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.industry-tab-btn:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--secondary-orange);
    transition: height 0.3s ease;
}

.industry-tab-btn.active {
    color: var(--primary-blue);
    background-color: var(--white);
}

.industry-tab-btn.active:after {
    height: 4px;
}

.industry-tab-btn:hover:not(.active) {
    color: var(--primary-blue);
    background-color: rgba(255, 255, 255, 0.7);
}

.industry-tab-content {
    display: none;
    background-color: var(--white);
    padding: 40px;
}

.industry-tab-content.active {
    display: block;
}

.industry-content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.industry-text h3 {
    font-size: 28px;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.industry-text p {
    margin-bottom: 25px;
    line-height: 1.8;
}

.solution-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.feature-item {
    padding: 20px;
    background-color: var(--light-gray);
    border-radius: 8px;
    text-align: center;
}

.feature-item i {
    font-size: 30px;
    color: var(--secondary-orange);
    margin-bottom: 15px;
}

.feature-item h4 {
    margin-bottom: 10px;
    color: var(--primary-blue);
}

.industry-image {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.industry-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.industry-image:hover img {
    transform: scale(1.05);
}

/* 服务流程 */
.service-process {
    background-color: var(--light-gray);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    position: relative;
}

.process-steps:before {
    content: '';
    position: absolute;
    top: 40px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--secondary-orange);
    z-index: 1;
}

.process-step {
    position: relative;
    z-index: 2;
    text-align: center;
    flex: 1;
}

.step-number {
    width: 80px;
    height: 80px;
    background-color: var(--white);
    border: 3px solid var(--secondary-orange);
    color: var(--secondary-orange);
    font-size: 36px;
    font-weight: bold;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.process-step:hover .step-number {
    background-color: var(--secondary-orange);
    color: var(--white);
}

.step-content {
    background-color: var(--white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.step-content h3 {
    color: var(--primary-blue);
    margin-bottom: 10px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .logistics-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-steps {
        flex-wrap: wrap;
    }

    .process-step {
        flex: 0 0 50%;
        margin-bottom: 30px;
    }

    .process-steps:before {
        display: none;
    }
}

@media (max-width: 992px) {
    .tab-grid, .industry-content-grid {
        grid-template-columns: 1fr;
    }

    .warehousing-card {
        grid-template-columns: 1fr;
    }

    .warehousing-image {
        height: 250px;
    }

    .solution-features {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 60px;
    }

    .page-header h1 {
        font-size: 36px;
    }

    .tab-buttons, .industry-tab-buttons {
        flex-direction: column;
    }

    .tab-btn, .industry-tab-btn {
        text-align: left;
        padding: 15px 20px;
    }

    .tab-btn:after, .industry-tab-btn:after {
        height: 100%;
        width: 4px;
        top: 0;
        bottom: 0;
    }

    .tab-btn.active:after, .industry-tab-btn.active:after {
        width: 4px;
        height: 100%;
    }

    .logistics-grid, .warehousing-grid {
        grid-template-columns: 1fr;
    }

    .process-step {
        flex: 0 0 100%;
    }
}

@media (max-width: 576px) {
    .tab-content, .industry-tab-content {
        padding: 30px 20px;
    }
}

/* 联系我们页面特有样式 */

/* 页面标题区 */
.page-header {
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.8)), url('../images/contact-bg.jpg') no-repeat center center/cover;
    color: var(--white);
    text-align: center;
    padding: 120px 0 80px;
    margin-top: 80px;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 20px;
    opacity: 0.9;
}

/* 联系信息 */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 50px;
}

.contact-card {
    background-color: var(--white);
    padding: 30px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-10px);
}

.contact-icon {
    font-size: 50px;
    color: var(--secondary-orange);
    margin-bottom: 20px;
}

.contact-card h3 {
    margin-bottom: 15px;
    color: var(--primary-blue);
}

.contact-card p {
    margin-bottom: 10px;
    color: var(--medium-gray);
}

/* 全球办事处 */
.office-tab-buttons {
    display: flex;
    background-color: var(--light-gray);
    border-radius: 8px 8px 0 0;
    overflow: hidden;
}

.office-tab-btn {
    flex: 1;
    padding: 15px;
    border: none;
    background: none;
    font-size: 16px;
    font-weight: bold;
    color: var(--medium-gray);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.office-tab-btn:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--secondary-orange);
    transition: height 0.3s ease;
}

.office-tab-btn.active {
    color: var(--primary-blue);
    background-color: var(--white);
}

.office-tab-btn.active:after {
    height: 4px;
}

.office-tab-btn:hover:not(.active) {
    color: var(--primary-blue);
    background-color: rgba(255, 255, 255, 0.7);
}

.office-tab-content {
    display: none;
    background-color: var(--white);
    padding: 40px;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.office-tab-content.active {
    display: block;
}

.office-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.office-card {
    background-color: var(--light-gray);
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.office-card:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

.office-card h4 {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.office-card h4 i {
    margin-right: 10px;
    color: var(--secondary-orange);
}

.office-card:hover h4 i {
    color: var(--white);
}

.office-card p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.office-card p i {
    margin-right: 10px;
    width: 15px;
    text-align: center;
}

/* 地图 */
.map-section {
    background-color: var(--light-gray);
}

#worldMap {
    height: 500px;
    width: 100%;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.map-locations {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.location-card {
    background-color: var(--white);
    padding: 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.location-card.active, .location-card:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

.location-card h4 {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.location-card h4 i {
    margin-right: 10px;
    color: var(--secondary-orange);
}

.location-card.active h4 i, .location-card:hover h4 i {
    color: var(--white);
}

/* 联系表单 */
.contact-form-section {
    background-color: var(--white);
}

.form-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
    margin-top: 50px;
}

.form-content {
    padding: 40px;
    background-color: var(--light-gray);
    border-radius: 8px;
}

.form-content h2 {
    color: var(--primary-blue);
    margin-bottom: 15px;
}

.form-content p {
    margin-bottom: 30px;
    color: var(--medium-gray);
}

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

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--primary-blue);
}

.contact-form label span {
    color: var(--secondary-orange);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    border-color: var(--primary-blue);
    outline: none;
}

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

.form-image {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
}

.form-image:hover img {
    transform: scale(1.05);
}

/* 常见问题 */
.faq-container {
    max-width: 800px;
    margin: 50px auto 0;
}

.faq-item {
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
}

.faq-question {
    background-color: var(--white);
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background-color: var(--light-gray);
}

.faq-question h3 {
    color: var(--primary-blue);
    margin-right: 20px;
}

.faq-question i {
    color: var(--secondary-orange);
    transition: transform 0.3s ease;
}

.faq-answer {
    background-color: var(--light-gray);
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-answer p {
    padding: 20px 0;
    color: var(--medium-gray);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .map-locations {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .form-container {
        grid-template-columns: 1fr;
    }

    .form-image {
        order: -1;
        max-height: 400px;
    }

    .office-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 100px 0 60px;
    }

    .page-header h1 {
        font-size: 36px;
    }

    .office-tab-buttons {
        flex-direction: column;
    }

    .office-tab-btn {
        text-align: left;
        padding: 15px 20px;
    }

    .office-tab-btn:after {
        height: 100%;
        width: 4px;
        top: 0;
        bottom: 0;
    }

    .office-tab-btn.active:after {
        width: 4px;
        height: 100%;
    }
}

@media (max-width: 576px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .map-locations {
        grid-template-columns: 1fr;
    }

    #worldMap {
        height: 300px;
    }

    .form-content {
        padding: 30px 20px;
    }
}