:root {
    --primary-color: #FF6600;
    --primary-dark: #E65C00;
    --text-color: #333;
    --text-light: #777;
    --light-gray: #f5f5f5;
    --border-color: #ddd;
    --white: #fff;
    --header-bg: #fff;
    --header-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

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

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

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

/* 头部样式优化 */
header {
    background-color: var(--header-bg);
    box-shadow: var(--header-shadow);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 8px 0;
    transition: all 0.3s ease;
}

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

.logo-container {
    display: flex;
    align-items: center;
    min-width: 0;
    max-width: 60%;
    flex: 1;
}

.logo-link {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: inherit;
    white-space: nowrap;
}

.logo-image {
    width: 70px;
    height: 70px;
    margin-right: 15px;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.logo-text {
    min-width: 0;
    overflow: hidden;
    flex: 1;
}

.logo-text h1 {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.logo-text p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 3px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 大屏幕 - 针对宽度大于1800px的屏幕，确保标题不会因为缩放而缩小 */
@media (min-width: 1800px) {
    .logo-text h1 {
        font-size: 1.5rem !important;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    
    .logo-text p {
        font-size: 0.9rem !important;
    }
    
    .logo-container {
        max-width: 60%;
        min-width: 500px;
    }
    
    /* 确保LOGO尺寸不变 */
    .logo-image {
        width: 70px !important;
        height: 70px !important;
        margin-right: 15px !important;
    }
    
    /* 确保联系方式不缩小 */
    .contact-info {
        font-size: 0.9rem !important;
        gap: 20px !important;
    }
    
    .contact-item i {
        font-size: 1em !important;
    }
    
    .contact-item span {
        font-size: 0.9rem !important;
    }
    
    /* 确保语言切换按钮不缩小 */
    .lang-btn {
        padding: 5px 15px !important;
        font-size: 0.9rem !important;
    }
    
    /* 确保导航菜单不缩小 */
    nav {
        margin-top: 15px !important;
        padding-top: 15px !important;
    }
    
    nav ul {
        gap: 50px !important;
    }
    
    nav ul li a {
        font-size: 1.05rem !important;
        padding: 10px 0 !important;
        letter-spacing: 1px !important;
    }
}

.header-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
    flex: 0 0 auto;
    max-width: 50%;
}

.contact-info {
    display: flex;
    gap: 20px;
    font-size: 0.9rem;
    color: var(--text-light);
    flex-wrap: nowrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.contact-item i {
    color: var(--primary-color);
}

/* 语言切换器 */
.language-switcher {
    display: flex;
    justify-content: flex-end;
    flex-shrink: 0;
}

.lang-btn {
    background: none;
    border: 1px solid var(--border-color);
    padding: 5px 15px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.lang-btn:first-child {
    border-top-left-radius: 4px;
    border-bottom-left-radius: 4px;
}

.lang-btn:last-child {
    border-top-right-radius: 4px;
    border-bottom-right-radius: 4px;
}

.lang-btn.active {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

/* 导航样式 */
nav {
    margin-top: 15px;
    padding-top: 15px;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    position: relative;
}

nav::-webkit-scrollbar {
    height: 3px;
}

nav::-webkit-scrollbar-thumb {
    background-color: rgba(255, 102, 0, 0.5);
    border-radius: 4px;
}

nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--primary-color) 20%, var(--primary-color) 80%, transparent 100%);
    opacity: 0.7;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: nowrap !important;
    min-width: max-content;
    padding: 0;
    margin: 0;
}

nav ul li {
    position: relative;
    white-space: nowrap;
    flex: 0 0 auto;
    transition: all 0.3s ease;
}

nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 10px 0;
    position: relative;
    font-size: 1.05rem;
    transition: all 0.3s ease;
    display: block;
    letter-spacing: 1px;
}

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
    opacity: 0;
}

nav ul li a:hover:after,
nav ul li a.active:after {
    width: 100%;
    opacity: 1;
}

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

/* 移动端优化 */
@media (max-width: 992px) {
    .logo-text h1 {
        font-size: 1.2rem;
    }
    
    .logo-text p {
        font-size: 0.8rem;
    }
    
    .contact-info {
        gap: 10px;
        font-size: 0.85rem;
    }
    
    .lang-btn {
        padding: 4px 12px;
        font-size: 0.85rem;
    }
}

/* 19:9比例和窄屏设备特殊处理 */
@media (max-aspect-ratio: 19/9), (max-width: 768px) {
    /* 清除冲突样式 */
    .header-content {
        flex-direction: row;
        flex-wrap: nowrap;
        justify-content: space-between;
    }
    
    /* 优化Logo和公司名称 */
    .logo-container {
        max-width: 40%;
    }
    
    .logo-image {
        width: 36px;
        height: 36px;
        margin-right: 8px;
    }
    
    .logo-text h1 {
        font-size: 0.85rem;
        line-height: 1.2;
    }
    
    .logo-text p {
        font-size: 0.65rem;
        margin-top: 2px;
    }
    
    /* 优化联系信息和语言切换 */
    .header-right {
        flex-direction: column;
        justify-content: center;
        align-items: flex-end;
        max-width: 60%;
        gap: 5px;
    }
    
    .contact-info {
        flex-wrap: nowrap;
        font-size: 0.75rem;
        justify-content: flex-end;
        overflow-x: visible;
    }
    
    .contact-item {
        flex-shrink: 0;
    }
    
    .contact-item span {
        font-size: 0.75rem;
        display: block;
    }
    
    .language-switcher {
        margin-left: 0;
    }
    
    .lang-btn {
        padding: 3px 6px;
        font-size: 0.7rem;
    }
    
    /* 确保菜单不折行 */
    nav {
        margin-top: 8px;
        padding-top: 8px;
        padding-bottom: 5px;
        overflow-x: auto;
        width: 100%;
    }
    
    nav ul {
        flex-wrap: nowrap !important;
        gap: 15px;
        width: max-content;
        padding-right: 5px;
    }
    
    nav ul li {
        flex: 0 0 auto;
    }
    
    nav ul li a {
        font-size: 0.8rem;
        padding: 5px 0;
        white-space: nowrap;
    }
}

/* 超窄屏幕优化 */
@media (max-width: 480px) {
    .header-content {
        margin-bottom: 5px;
    }
    
    .logo-container {
        max-width: 38%;
    }
    
    .logo-image {
        width: 32px;
        height: 32px;
        margin-right: 5px;
    }
    
    .logo-text h1 {
        font-size: 0.75rem;
    }
    
    .logo-text p {
        font-size: 0.6rem;
    }
    
    .header-right {
        max-width: 62%;
    }
    
    .contact-info {
        font-size: 0.7rem;
        gap: 8px;
    }
    
    .contact-item i {
        font-size: 0.8rem;
    }
    
    .lang-btn {
        padding: 2px 6px;
        font-size: 0.7rem;
    }
    
    nav ul {
        gap: 12px;
    }
    
    nav ul li a {
        font-size: 0.75rem;
    }
}

/* 清除冲突样式 */
@media (max-width: 768px) {
    /* 删除可能导致冲突的原有响应式样式 */
    .logo-container,
    .logo-link {
        flex-direction: row;
    }
    
    nav ul {
        flex-direction: row;
        align-items: center;
    }
    
    nav ul li {
        width: auto;
        border-bottom: none;
        padding-bottom: 0;
    }
}

/* 轮播图样式 */
.swiper-container {
    width: 100%;
    max-width: none;
    height: 500px;
    position: relative;
    margin: 0 auto 40px;
    overflow: hidden;
}

.swiper-slide {
    position: relative;
    overflow: hidden;
}

.swiper-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 1.2s ease;
}

.slide-content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 40px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    color: var(--white);
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.8s ease 0.3s;
}

.slide-content h2 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: var(--white);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.slide-content p {
    font-size: 1.1rem;
    color: var(--white);
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

.swiper-slide-active .slide-content {
    transform: translateY(0);
    opacity: 1;
}

.swiper-slide-active img {
    transform: scale(1.05);
}

.swiper-button-next,
.swiper-button-prev {
    display: none !important;
}

.swiper-pagination {
    position: absolute;
    bottom: 20px !important;
    z-index: 10;
    width: 100%;
    text-align: center;
}

.swiper-pagination-bullet {
    width: 30px;
    height: 6px;
    border-radius: 3px !important;
    background: rgba(255, 255, 255, 0.7) !important;
    opacity: 1;
    margin: 0 4px;
    display: inline-block;
    transition: all 0.3s ease;
}

.swiper-pagination-bullet-active {
    background: #ff6600 !important;
    width: 40px;
}

/* 响应式媒体查询 */
@media (max-width: 768px) {
    .swiper-container {
        height: 350px;
    }
}

@media (max-width: 576px) {
    .swiper-container {
        height: 300px;
    }
    
    .slide-content {
        padding: 20px;
    }
    
    .swiper-pagination-bullet {
        width: 20px;
        height: 4px;
    }
    
    .swiper-pagination-bullet-active {
        width: 30px;
    }
}

/* 运单查询样式优化 */
.tracking {
    padding: 80px 0;
    background-color: #f7f7f7; /* 使用简单的浅灰色背景 */
    position: relative;
    border-top: 1px solid #eaeaea;
    border-bottom: 1px solid #eaeaea;
    margin-top: 40px;
}

.tracking::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 102, 0, 0.03) 0%, rgba(255, 102, 0, 0.07) 100%);
    z-index: 1;
}

.tracking .container {
    position: relative;
    z-index: 2;
}

.tracking h2 {
    color: #333; /* 改为深色文字 */
    text-align: center;
    margin-bottom: 30px;
    font-weight: 600;
}

.tracking-form-container {
    max-width: 800px;
    margin: 0 auto;
}

.tracking-input-container {
    display: flex;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.tracking-input-wrapper {
    flex: 1;
    background-color: #fff;
    position: relative;
    min-height: auto;
    display: flex;
    flex-direction: column;
}

#tracking-input {
    width: 100%;
    border: none;
    padding: 18px 20px;
    font-size: 16px;
    outline: none;
}

#tracking-tags-container {
    padding: 5px 20px 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: auto;
    max-height: none;
    overflow: visible;
}

.tracking-tag {
    display: inline-flex;
    align-items: center;
    background-color: #f5f5f5;
    border-radius: 4px;
    padding: 6px 10px;
    margin: 2px;
    font-size: 14px;
    border-left: 3px solid var(--primary-color);
}

.tracking-tag-text {
    margin-right: 8px;
    color: #333;
}

.tracking-tag-close {
    cursor: pointer;
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: #e0e0e0;
    border-radius: 50%;
    font-size: 12px;
    line-height: 1;
    transition: all 0.2s ease;
}

.tracking-tag-close:hover {
    background-color: #ccc;
}

.tracking-form-container button {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 0 35px;
    font-size: 16px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    font-weight: 500;
}

.tracking-form-container button:hover {
    background-color: var(--primary-dark);
}

/* 添加视觉引导 */
.tracking::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

/* 服务介绍样式 */
.services {
    padding: 60px 0;
}

.services h2 {
    text-align: center;
    margin-bottom: 40px;
}

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

.service-item {
    text-align: center;
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
    background-color: var(--white);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

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

.service-image {
    margin-bottom: 20px;
    overflow: hidden;
    border-radius: 8px;
    height: 200px;
}

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

.service-item:hover .service-image img {
    transform: scale(1.1);
}

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

.service-item p {
    margin-bottom: 20px;
    color: var(--text-color);
}

.service-item .btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 10px 25px;
    border-radius: 5px;
    text-decoration: none;
    margin-top: 20px;
    transition: background-color 0.3s ease;
    height: 42px !important;
    line-height: 22px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-sizing: border-box !important;
}

.service-item .btn:hover {
    background-color: var(--primary-dark);
}

/* 客户展示样式 */
.clients {
    padding: 40px 0;
    background-color: var(--light-gray);
}

.client-carousel-container {
    width: 100%;
    overflow: hidden;
    position: relative;
    margin-top: 30px;
}

.client-carousel {
    display: flex;
    animation: scroll 30s linear infinite;
    width: max-content;
}

.client-logo {
    flex: 0 0 200px;
    height: 100px;
    margin: 0 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--white);
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 10px;
}

.client-logo img {
    max-width: 100%;
    max-height: 80px;
    object-fit: contain;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(calc(-200px * 10 - 40px * 10)); /* 10个logo宽度+间距 */
    }
}

.client-carousel-container:hover .client-carousel {
    animation-play-state: paused;
}

/* 货运网络样式 */
.network {
    padding: 60px 0;
}

.network-desc {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
}

.china-map {
    position: relative;
    width: 1000px;
    height: 800px;
    margin: 40px auto;
    background: url('../images/china-map.svg') no-repeat center center;
    background-size: contain;
    overflow: visible;
}

.city-marker {
    position: absolute;
    width: 16px;
    height: 16px;
    background-color: var(--primary-color);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: all 0.3s ease;
    cursor: pointer;
    z-index: 10;
    box-shadow: 0 0 0 4px rgba(255, 102, 0, 0.2);
}

.city-marker:hover {
    transform: translate(-50%, -50%) scale(1.5);
    z-index: 1000;
    box-shadow: 0 0 0 6px rgba(255, 102, 0, 0.3), 0 0 10px rgba(0, 0, 0, 0.3);
}

.city-marker::after {
    content: attr(title);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(51, 51, 51, 0.9);
    color: white;
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    margin-bottom: 8px;
    z-index: 1001;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.city-marker::before {
    content: '';
    position: absolute;
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid rgba(51, 51, 51, 0.9);
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1001;
}

.city-marker:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%);
}

.city-marker:hover::before {
    opacity: 1;
    visibility: visible;
}

/* 响应式地图 */
@media (max-width: 1100px) {
    .china-map {
        width: 800px;
        height: 640px;
    }
}

@media (max-width: 900px) {
    .china-map {
        width: 100%;
        height: 0;
        padding-bottom: 75%; /* 保持宽高比 */
        background-size: contain;
    }
    
    .city-marker {
        width: 12px;
        height: 12px;
    }
}

/* 服务优势样式优化 */
.advantages {
    padding: 80px 0;
    background: linear-gradient(135deg, #f9f9f9 0%, #ffffff 100%);
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.advantage-item {
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
    border-top: 3px solid var(--primary-color);
}

.advantage-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    transition: all 0.3s ease;
}

.advantage-item:hover .advantage-icon {
    transform: scale(1.1);
}

.advantage-item h3 {
    color: var(--text-color);
    margin-bottom: 15px;
    font-weight: 600;
}

.advantage-item p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 地面操作服务样式优化 */
.ground-services {
    padding: 80px 0;
    background-color: white;
}

.ground-services h2 {
    text-align: center;
    margin-bottom: 20px;
}

.ground-services p {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: var(--text-light);
}

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

.service-category {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    transition: all 0.3s ease;
    border-left: 4px solid var(--primary-color);
}

.service-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.service-category h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

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

.service-category li {
    margin-bottom: 12px;
    padding-left: 20px;
    position: relative;
    line-height: 1.6;
}

.service-category li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .advantage-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-list {
        grid-template-columns: 1fr;
    }
}

/* 联系表单样式 */
.contact-form {
    padding: 80px 0;
}

.form-desc {
    text-align: center;
    margin-bottom: 40px;
}

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

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
}

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

.captcha-group .captcha-container,
.captcha-container {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    gap: 10px;
}

#captcha-image {
    width: 150px !important;
    height: 40px !important;
    border: 1px solid #ddd !important;
    border-radius: 4px !important;
    cursor: pointer !important;
    display: inline-block !important;
    background-color: #f3f3f3 !important;
    visibility: visible !important;
    opacity: 1 !important;
    object-fit: contain !important;
}

#refresh-captcha {
    margin-left: 5px !important;
    color: #FF6600 !important;
    background-color: #f5f5f5 !important;
    border: 1px solid #ddd !important;
    padding: 0 10px !important;
    border-radius: 4px !important;
    cursor: pointer !important;
    height: 40px !important;
    width: 40px !important;
    min-width: 40px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
}

#refresh-captcha:hover {
    background-color: #f0f0f0;
}

.privacy-group {
    display: flex;
    align-items: flex-start;
}

.checkbox-label {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-top: 5px;
}

#submit-btn {
    width: 100%;
    padding: 15px;
    background-color: #ccc;
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    cursor: not-allowed;
    transition: all 0.3s ease;
}

#submit-btn.enabled {
    background-color: var(--primary-color);
    cursor: pointer;
}

#submit-btn.enabled:hover {
    background-color: var(--primary-dark);
}

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

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

.footer-info h3 {
    margin-bottom: 15px;
}

.footer-contact p {
    margin-bottom: 10px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .logo-container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logo-link {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .logo-image {
        margin-bottom: 10px;
        margin-right: 0;
    }
    
    .logo-text h1 {
        font-size: 1.3rem;
    }
    
    nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    nav ul li {
        width: 100%;
        border-bottom: 1px solid var(--light-gray);
        padding-bottom: 10px;
    }
    
    nav ul li:last-child {
        border-bottom: none;
    }

    .swiper-container {
        height: 300px;
    }
    
    .slide-content h2 {
        font-size: 1.5rem;
    }
    
    .slide-content p {
        font-size: 1rem;
    }

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

    .client-row img {
        height: 40px;
        margin: 0 15px;
    }
}

@media (max-width: 480px) {
    .swiper-container {
        height: 250px;
    }
    
    .slide-content h2 {
        font-size: 1.2rem;
    }
    
    .slide-content p {
        font-size: 0.9rem;
    }

    .captcha-group .captcha-container {
        flex-direction: column;
    }

    .captcha-container input {
        width: 100%;
    }
}

/* 公司简介样式 */
.about-intro {
    padding: 80px 0;
    background-color: var(--white);
}

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

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

.about-intro-text h2 {
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 15px;
}

.about-intro-text h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

.about-intro-text p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-stats {
    display: flex;
    margin: 40px 0;
    gap: 40px;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 10px;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-color);
}

.about-intro-image {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

.about-intro-image:hover img {
    transform: scale(1.03);
}

.btn-outline {
    display: inline-block;
    padding: 12px 25px;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: none;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

/* 核心优势样式 */
.core-advantages {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.core-advantages h2 {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
    padding-bottom: 15px;
}

.core-advantages h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
}

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

.advantage-card {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    text-align: center;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

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

.advantage-card p {
    color: var(--text-light);
    line-height: 1.6;
}

/* 快速咨询样式 */
.quick-contact {
    padding: 60px 0;
    background-color: var(--primary-color);
    color: white;
}

.quick-contact-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 30px;
}

.quick-contact-text h2 {
    margin-bottom: 10px;
    color: white;
}

.quick-contact-text p {
    margin: 0;
    opacity: 0.9;
}

.btn-primary {
    display: inline-block;
    padding: 15px 30px;
    background-color: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .about-intro-content {
        flex-direction: column;
    }
    
    .quick-contact-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .about-stats {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* 新增样式 */
.case-studies {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.case-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.case-image {
    height: 200px;
    overflow: hidden;
}

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

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

.case-content {
    padding: 25px;
}

.case-stats {
    display: flex;
    gap: 30px;
    margin-top: 20px;
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* 响应式调整 */
@media (max-width: 768px) {
    .case-grid {
        grid-template-columns: 1fr;
    }
}

/* 统一按钮高度 */
.btn,
.service-item .btn,
.ground-service .btn,
.consultation-btn,
.btn-consult,
[data-i18n="services.consult"] {
    height: 42px !important;
    line-height: 42px !important;
    min-height: 42px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    white-space: nowrap !important;
    padding: 0 20px !important;
    box-sizing: border-box !important;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
}

/* 顶部信息栏响应式调整 - 彻底修复 */
.header-top {
    padding: 8px 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
}

@media (max-width: 768px) {
    .header-top {
        padding: 5px 0;
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .header-contact, 
    .language-switcher {
        flex: 0 0 auto;
        padding: 0 10px;
        margin: 0;
    }
    
    .header-contact span {
        display: inline-block;
        margin: 0 5px;
        font-size: 12px;
    }
    
    .language-switcher {
        margin-left: auto;
    }
}

/* 必填项样式 */
.form-group.required label::after {
    content: " *";
    color: #ff6600;
    font-size: 16px;
}

/* 错误提示样式 */
.form-group .error-message {
    color: #ff6600;
    font-size: 12px;
    margin-top: 5px;
    display: none;
}

.form-group.error .error-message {
    display: block;
}

.form-group.error input,
.form-group.error textarea,
.form-group.error select {
    border-color: #ff6600;
}

/* 表单控件样式 */
#captcha {
    height: 42px;
    width: 100%;
    padding: 8px 12px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

/* 移动端顶部导航彻底优化 */
@media (max-width: 767px) {
    /* 顶部信息栏 */
    .header-top {
        padding: 5px 0;
        flex-direction: column;
        align-items: stretch;
    }
    
    .header-contact {
        order: 1;
        font-size: 12px;
        padding: 3px 0;
        justify-content: space-between;
        flex-wrap: wrap;
    }
    
    .header-contact span {
        margin: 2px 5px;
        white-space: nowrap;
    }
    
    .language-switcher {
        order: 2;
        justify-content: flex-end;
        padding: 3px 0;
    }
    
    /* 主导航 */
    .navbar {
        padding: 5px 0;
    }
    
    .navbar-brand {
        font-size: 16px;
    }
    
    .navbar-toggler {
        padding: 3px 8px;
    }
    
    .navbar-collapse {
        background: white;
        padding: 10px;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    }
    
    .nav-link {
        padding: 8px 0;
        border-bottom: 1px solid #eee;
    }
    
    /* 整体高度控制 */
    .header-top, 
    .navbar {
        max-height: none;
    }
    
    .header-top {
        height: auto;
        min-height: 40px;
    }
    
    .navbar {
        height: auto;
        min-height: 50px;
    }
}

/* 针对窄屏设备的布局 - 完全重写 */
@media (max-width: 430px) {
    /* 头部基础布局 */
    header {
        padding: 5px 0;
    }
    
    .container {
        width: 95%;
        padding: 0 5px;
    }
    
    /* 完全重新设计头部布局为三行结构 */
    .header-content {
        display: flex;
        flex-direction: column;
        gap: 5px;
        margin-bottom: 5px;
    }
    
    /* 第一行：Logo和公司名称 */
    .logo-container {
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        width: 100%;
        max-width: 100%;
        margin-bottom: 5px;
    }
    
    .logo-link {
        display: flex;
        flex-direction: row;
        align-items: center;
        width: 100%;
    }
    
    .logo-image {
        width: 45px;
        height: 45px;
        margin-right: 10px;
        flex-shrink: 0;
    }
    
    .logo-text {
        flex: 1;
        overflow: hidden;
    }
    
    .logo-text h1 {
        font-size: 0.8rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        line-height: 1.2;
    }
    
    .logo-text p {
        font-size: 0.6rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        line-height: 1.2;
    }
    
    /* 第二行：联系信息 */
    .header-right {
        display: flex;
        flex-direction: column;
        width: 100%;
        max-width: 100%;
        gap: 5px;
    }
    
    .contact-info {
        display: flex;
        width: 100%;
        justify-content: space-between;
        flex-wrap: nowrap;
        font-size: 0.75rem;
        margin-bottom: 5px;
    }
    
    .contact-item {
        white-space: nowrap;
        margin-right: 10px;
    }
    
    .contact-item i {
        font-size: 0.8rem;
    }
    
    .contact-item span {
        font-size: 0.75rem;
    }
    
    /* 第三行：语言切换 */
    .language-switcher {
        display: flex;
        justify-content: flex-end;
        width: 100%;
        margin-bottom: 5px;
    }
    
    .lang-btn {
        padding: 3px 10px;
        font-size: 0.75rem;
    }
    
    /* 导航菜单一定不要折行，三个菜单紧贴一起 */
    nav {
        margin-top: 5px;
        padding-top: 5px;
        padding-bottom: 5px;
        width: 100%;
        overflow-x: visible;
    }
    
    nav ul {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap !important;
        justify-content: flex-start;
        width: 100%;
        gap: 5px;
        padding: 0;
        margin: 0;
    }
    
    nav ul li {
        flex: 0 0 auto;
        white-space: nowrap;
    }
    
    nav ul li a {
        font-size: 0.8rem;
        padding: 5px 6px;
        white-space: nowrap;
    }
}

/* 为窄屏设备特别优化公司名称显示 */
@media (max-width: 375px) {
    .logo-text h1 {
        font-size: 0.75rem;
        max-width: 100%;
    }
    
    .logo-text p {
        font-size: 0.55rem;
    }
    
    .logo-image {
        width: 28px;
        height: 28px;
        margin-right: 6px;
    }
    
    nav ul li a {
        font-size: 0.75rem;
        padding: 5px 4px;
    }
}

/* 覆盖全局样式，确保导航永远不折行 */
nav ul {
    flex-wrap: nowrap !important;
    white-space: nowrap !important;
}

nav ul li {
    flex: 0 0 auto !important;
    white-space: nowrap !important;
}

/* 针对窄屏设备的导航菜单平分屏幕 */
@media (max-width: 430px), (max-aspect-ratio: 19/9) {
    /* 导航菜单三个按钮平分屏幕 */
    nav {
        margin-top: 10px;
        padding-top: 10px;
        padding-bottom: 5px;
        width: 100%;
        overflow-x: visible;
    }
    
    nav::before {
        background: linear-gradient(90deg, transparent 0%, var(--primary-color) 10%, var(--primary-color) 90%, transparent 100%);
    }
    
    nav ul {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap !important;
        justify-content: space-between !important;
        width: 100%;
        padding: 0 5px;
        margin: 0;
        gap: 0;
    }
    
    nav ul li {
        flex: 1 1 33.33% !important;
        text-align: center;
        white-space: nowrap;
    }
    
    nav ul li a {
        font-size: 0.85rem;
        padding: 8px 0;
        white-space: nowrap;
        display: block;
        width: 100%;
        text-align: center;
        letter-spacing: 0.5px;
    }
    
    nav ul li a:after {
        bottom: 0;
    }
}

/* 表单样式调整 */
#business-type,
.form-control {
    height: 42px;
    width: 100%;
    padding: 8px 12px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}

.form-group.required label:after {
    content: " *";
    color: #FF6600;
    font-weight: bold;
}

/* 确保所有相关按钮保持一致的高度和样式 */
.btn-consult,
.btn[data-i18n="services.consult"] {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    padding: 10px 25px;
    border-radius: 5px;
    text-decoration: none;
    margin-top: 20px;
    transition: background-color 0.3s ease;
    height: 42px !important;
    line-height: 22px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    box-sizing: border-box !important;
    white-space: nowrap !important;
}

.btn-consult:hover,
.btn[data-i18n="services.consult"]:hover {
    background-color: var(--primary-dark);
}