/* 全局样式 */
:root {
    --primary-color: #e1251b;
    --secondary-color: #f15a22;
    --dark-color: #333333;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--dark-color);
    overflow-x: hidden;
    padding-top: 76px;
}

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

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

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

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

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

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

.hero-slogan {
    color: #FFFFFF;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.display-4 {
    font-size: calc(1.8rem + 1.5vw);
    line-height: 1.4;
    word-wrap: break-word;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-title {
    font-weight: 700;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
}

.section-subtitle {
    color: var(--gray-color);
    margin-bottom: 2rem;
}

/* 补充 CSS 样式

为了确保网站的其他部分也能与京东红主题色协调，我们需要添加以下 CSS 样式：
```css
/* 导航栏 */
.navbar {
    padding: 15px 0;
    transition: all 0.3s ease;
}

.navbar-brand img {
    transition: all 0.3s ease;
}

.navbar-light .navbar-nav .nav-link {
    color: var(--dark-color);
    font-weight: 500;
    padding: 0.5rem 1rem;
}

.navbar-light .navbar-nav .nav-link:hover {
    color: var(--primary-color);
}

/* 头部Banner */
.hero-section {
    position: relative;
    color: white;
    padding: 100px 0;
    margin-top: -76px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

#hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translateX(-50%) translateY(-50%);
    object-fit: cover;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
}

.hero-section h1 {
    color: white;
}

.hero-section p {
    color: rgba(255, 255, 255, 0.9);
}

.hero-slogan {
    color: #FFFFFF;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.btn-outline-primary {
    color: #fff;
    border-color: #fff;
}

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

/* 核心功能 */
.feature-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    height: 100%;
    transition: all 0.3s ease;
}

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

.feature-icon {
    font-size: 2.8rem;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
}

/* 平台优势 */
.advantage-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.advantage-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 20px;
    flex-shrink: 0;
}

.advantage-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

/* 服务项目样式 */
.project-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    height: 100%;
}

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

.project-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.project-content {
    padding: 20px;
}

.project-content h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #333;
}

.project-content p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0;
}

/* 应用场景 */
.scenario-card {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
    height: 100%;
}

.scenario-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.scenario-content {
    padding: 20px;
    background-color: #fff;
}

.scenario-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

/* 发展历程 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.timeline-item {
    margin-bottom: 30px;
    text-align: center;
}

.timeline-content {
    background: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    margin: 0 auto;
    max-width: 500px;
}

.timeline-content h4 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
}

/* 客户案例 */
.client-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 30px;
    margin-bottom: 30px;
}

.client-logo {
    width: 150px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: all 0.3s ease;
}

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

.client-logo:hover {
    filter: grayscale(0%);
    opacity: 1;
}

.case-card {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    height: 100%;
    transition: all 0.3s ease;
}

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

.case-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
}

/* 行动号召 */
.cta-container {
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 10px;
    padding: 50px 30px;
}

.cta-container h2 {
    font-weight: 700;
}

.cta-container .btn-outline-primary {
    color: #fff;
    border-color: #fff;
}

.cta-container .btn-outline-primary:hover {
    background-color: #fff;
    color: var(--primary-color);
}

/* 联系我们 */
.contact-info {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    height: 100%;
}

.contact-info h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.contact-info ul li {
    margin-bottom: 15px;
}

.contact-form {
    background-color: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* 页脚 */
.footer {
    background-color: #f8f9fa;
    color: #333;
}

.footer a {
    color: #333;
    opacity: 0.8;
}

.footer a:hover {
    color: #333;
    opacity: 1;
}

.footer h5 {
    font-weight: 600;
    margin-bottom: 20px;
}

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

.qrcode-container {
    text-align: left;
}

.qrcode-img {
    max-width: 150px;
    height: auto;
    border-radius: 8px;
    margin: 0;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    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: #fff;
}

/* 响应式调整 */
/* Hero 区域图片样式 */
.hero-image-container {
    position: relative;
    max-width: 380px;
    margin-left: auto;
    margin-right: 20px;
    padding: 20px;
}

.hero-image {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: 40px;
    border: 14px solid #ffffff;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.2);
    background-color: #fff;
    position: relative;
    z-index: 1;
}

/* 走马灯样式调整 */
#hero-carousel {
    border-radius: 40px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

#hero-carousel .carousel-item {
    transition: transform 1.2s ease-in-out;
}

/* 确保走马灯内的图片保持相同尺寸 */
#hero-carousel .carousel-item img {
    height: 500px;
    object-fit: cover;
}

/* 移除手机刘海和按钮的伪元素 */

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

/* 在移动设备上调整图片大小 */
@media (max-width: 991.98px) {
    .hero-image {
        max-height: 400px;
        padding: 10px;
    }
}

@media (max-width: 767.98px) {
    .advantage-item {
        flex-direction: column;
    }
    
    .advantage-icon {
        margin-bottom: 15px;
    }
}