/* 全局样式 */
:root {
    --primary-color: #2c5e92;
    --secondary-color: #f8b400;
    --accent-color: #e74c3c;
    --dark-color: #333;
    --light-color: #f5f5f5;
    --gray-color: #777;
    --light-gray: #eaeaea;
    --white: #fff;
    --black: #000;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
}

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

body {
    font-family: 'Microsoft YaHei', 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
}

img {
    max-width: 100%;
    height: auto;
}

ul {
    list-style: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 4px;
    font-weight: bold;
    text-align: center;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #1e4b7b;
    color: var(--white);
    transform: translateY(-2px);
}

.btn-primary {
    background-color: var(--primary-color);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--dark-color);
}

.btn-secondary:hover {
    background-color: #e0a800;
    color: var(--dark-color);
}

/* 头部样式 */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    margin-right: 15px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
    position: relative;
}

nav ul li a:hover {
    color: var(--primary-color);
}

nav ul li.active a {
    color: var(--primary-color);
    font-weight: bold;
}

nav ul li.active a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

/* 横幅区域 */
.banner {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/banner.jpg') no-repeat center center;
    background-size: cover;
    color: var(--white);
    padding: 100px 0;
    text-align: center;
}

.banner h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.banner p {
    font-size: 1.2rem;
    margin-bottom: 30px;
}

.page-banner {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/banner.jpg') no-repeat center center;
    background-size: cover;
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.page-banner h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.page-banner p {
    font-size: 1.1rem;
}

/* 特色区域 */
.features {
    padding: 60px 0;
    background-color: var(--light-color);
}

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

.feature-item {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-10px);
}

.feature-item .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-item h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* 关于预览 */
.about-preview {
    padding: 80px 0;
}

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

.about-preview .text-content {
    flex: 1;
}

.about-preview .image-content {
    flex: 1;
}

.about-preview h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-preview p {
    margin-bottom: 20px;
    color: var(--gray-color);
}

.about-preview .btn {
    margin-top: 20px;
}

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

.stats .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

/* 客户区域 */
.clients {
    padding: 60px 0;
    text-align: center;
}

.clients h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

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

.client-logos {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
}

.logo-item {
    padding: 20px 40px;
    background-color: var(--light-color);
    border-radius: 8px;
    font-weight: bold;
}

/* 行动号召区域 */
.cta {
    padding: 80px 0;
    text-align: center;
    background-color: var(--light-color);
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.cta p {
    max-width: 700px;
    margin: 0 auto 30px;
    color: var(--gray-color);
}

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

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

.footer-column {
    margin-bottom: 30px;
}

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

footer h3 {
    color: var(--white);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

footer p, footer a {
    color: #bbb;
    margin-bottom: 10px;
    display: block;
}

footer a:hover {
    color: var(--white);
}

.copyright {
    text-align: center;
    padding: 20px 0;
    background-color: rgba(0, 0, 0, 0.2);
    margin-top: 30px;
}

/* 关于页面样式 */
.about-content {
    padding: 80px 0;
}

.about-section {
    margin-bottom: 60px;
}

.about-section h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 10px;
}

.about-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--secondary-color);
}

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

.advantage-item {
    padding: 30px;
    background-color: var(--light-color);
    border-radius: 8px;
    transition: transform 0.3s ease;
}

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

.advantage-item .icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.advantage-item h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 30px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 2px;
    background-color: var(--secondary-color);
}

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

.timeline-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    border: 3px solid var(--white);
    box-shadow: 0 0 0 2px var(--secondary-color);
}

.timeline-date {
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.timeline-content h4 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

/* 服务页面样式 */
.services-content {
    padding: 80px 0;
}

.service-category {
    margin-bottom: 60px;
}

.service-category h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 10px;
}

.service-category h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--secondary-color);
}

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

.service-item {
    padding: 30px;
    background-color: var(--light-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

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

.service-item .service-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.service-item h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.service-item ul {
    margin-top: 15px;
}

.service-item ul li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
}

.service-item ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

.service-features {
    padding: 60px 0;
    background-color: var(--light-color);
}

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

.feature-item {
    padding: 30px;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.feature-item h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* 仓储服务页面样式 */
.warehouse-intro {
    padding: 80px 0;
}

.warehouse-intro .container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.warehouse-intro .intro-text {
    flex: 1;
}

.warehouse-intro .intro-image {
    flex: 1;
}

.warehouse-intro h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.warehouse-intro p {
    margin-bottom: 20px;
    color: var(--gray-color);
}

.warehouse-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
}

.stat-item span {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    display: block;
    margin-bottom: 5px;
}

.warehouse-features {
    padding: 60px 0;
    background-color: var(--light-color);
}

.warehouse-features h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

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

.feature-item {
    padding: 30px;
    background-color: var(--white);
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
}

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

.feature-item .icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.feature-item h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.warehouse-services {
    padding: 60px 0;
}

.warehouse-services h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

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

.service-item {
    padding: 30px;
    background-color: var(--light-color);
    border-radius: 8px;
}

.service-item h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--secondary-color);
}

.service-item ul li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.service-item ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
}

.overseas-warehouse {
    padding: 60px 0;
    background-color: var(--light-color);
}

.overseas-warehouse h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.overseas-warehouse p {
    max-width: 800px;
    margin: 0 auto 30px;
    text-align: center;
    color: var(--gray-color);
}

.locations {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-bottom: 40px;
}

.location-item {
    background-color: var(--white);
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.location-item h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
    text-align: center;
}

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

.benefits h4 {
    text-align: center;
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.benefit-item {
    padding: 20px;
    background-color: var(--white);
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.benefit-item h5 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.warehouse-cta {
    padding: 60px 0;
    text-align: center;
    background-color: var(--primary-color);
    color: var(--white);
}

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

.warehouse-cta p {
    max-width: 800px;
    margin: 0 auto 30px;
}

.warehouse-cta .btn {
    background-color: var(--secondary-color);
    color: var(--dark-color);
}

.warehouse-cta .btn:hover {
    background-color: #e0a800;
}

/* 物流查询页面样式 */
.tracking-section {
    padding: 80px 0;
}

.tracking-section .container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.tracking-form {
    flex: 1;
    padding: 40px;
    background-color: var(--light-color);
    border-radius: 8px;
}

.tracking-image {
    flex: 1;
}

.tracking-form h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.tracking-form p {
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--light-gray);
    border-radius: 4px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

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

.tracking-results {
    padding: 60px 0;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--light-gray);
}

.current-status .status-in-transit {
    color: var(--warning-color);
}

.current-status .status-delivered {
    color: var(--success-color);
}

.current-status .status-problem {
    color: var(--danger-color);
}

.shipment-details {
    margin-top: 40px;
    padding: 30px;
    background-color: var(--light-color);
    border-radius: 8px;
}

.shipment-details h4 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.detail-item span {
    color: var(--gray-color);
}

/* FAQ样式 */
.faq-section {
    padding: 60px 0;
}

.faq-section h3 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.faq-item {
    margin-bottom: 15px;
    border: 1px solid var(--light-gray);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    cursor: pointer;
    background-color: var(--light-color);
}

.faq-question h4 {
    margin: 0;
}

.toggle-icon {
    font-weight: bold;
    font-size: 1.2rem;
}

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

.faq-answer p {
    padding: 15px 0;
}

/* 联系页面样式 */
.contact-info {
    padding: 60px 0;
}

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

.info-card {
    padding: 30px;
    text-align: center;
    background-color: var(--light-color);
    border-radius: 8px;
    transition: transform 0.3s ease;
}

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

.info-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.contact-form-section {
    padding: 60px 0;
}

.contact-form-section .container {
    display: flex;
    gap: 50px;
}

.form-container {
    flex: 1;
    padding: 40px;
    background-color: var(--light-color);
    border-radius: 8px;
}

.map-container {
    flex: 1;
}

.map-placeholder {
    height: 400px;
    background-color: var(--light-gray);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
    border-radius: 8px;
}

.transportation h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.departments {
    padding: 60px 0;
    background-color: var(--light-color);
}

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

.department-item {
    padding: 30px;
    background-color: var(--white);
    border-radius: 8px;
}

.department-item h4 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* 移动端菜单样式 */
.mobile-menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px;
}

/* 返回顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

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

.back-to-top:hover {
    background-color: var(--secondary-color);
    color: var(--dark-color);
}

/* 表单错误样式 */
input.error, textarea.error, select.error {
    border-color: var(--danger-color) !important;
}

/* 页面切换动画 */
.page-transition {
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* 动画效果 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* 响应式设计 - 平板和手机 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    nav {
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    nav.active {
        max-height: 500px;
    }
    
    nav ul {
        flex-direction: column;
        width: 100%;
        padding: 20px 0;
    }
    
    nav ul li {
        margin: 10px 0;
    }
    
    .mobile-menu-toggle {
        display: block;
        position: absolute;
        right: 20px;
        top: 15px;
    }
    
    .about-preview .container,
    .tracking-section .container,
    .contact-form-section .container {
        flex-direction: column;
    }
    
    .features .container,
    .stats .container,
    .services-grid,
    .features-grid,
    .advantages,
    .contact-info .container {
        grid-template-columns: 1fr;
    }
    
    .warehouse-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .locations {
        flex-direction: column;
        gap: 20px;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}