/* 全局样式 */
:root {
    --primary-color: #0056b3;
    --secondary-color: #6c757d;
    --accent-color: #ffc107;
    --text-color: #333;
    --light-bg: #f8f9fa;
}

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    padding-top: 76px; /* 添加顶部内边距，为固定导航栏留出空间 */
}

/* 导航栏样式 */
.navbar {
    padding: 1rem 0;
    transition: all 0.3s ease;
    height: 76px; /* 设置固定高度 */
}

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

.nav-link {
    color: var(--text-color) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

/* 轮播图样式 */
.carousel-item {
    height: 100vh;
    min-height: 500px;
    max-height: 800px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-caption {
   
    padding: 2rem;
    border-radius: 10px;
    max-width: 800px;
    margin: 0 auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.carousel-caption h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

/* 特性部分样式 */
.features {
    padding: 5rem 0;
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.feature-item {
    padding: 2rem;
    border-radius: 10px;
    transition: all 0.3s ease;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* 服务卡片样式 */
.service-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.service-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.service-content {
    padding: 1.5rem;
}

.service-content h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.service-features {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

.service-features li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.service-features i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* 联系信息卡片样式 */
.contact-info-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.contact-info-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.contact-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.contact-info-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.contact-info-card p {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

/* 联系表单样式 */
.contact-form-wrapper {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    font-weight: 500;
}

.form-control {
    border: 1px solid #dee2e6;
    border-radius: 5px;
    padding: 0.75rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 86, 179, 0.25);
}

/* 地图容器样式 */
.map-wrapper {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.map-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.map-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-info {
    margin-top: 1.5rem;
}

.map-info h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.map-info ul li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.map-info ul li i {
    color: var(--primary-color);
    margin-right: 0.5rem;
    font-size: 1.2rem;
}

/* 页脚样式 */
.footer {
    background: #343a40;
    color: white;
}

.footer a {
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.footer h5 {
    margin-bottom: 1.5rem;
    font-weight: 600;
}

/* 页面标题样式 */
.page-header {
    padding: 3rem 0; /* 减小内边距，因为body已经有了顶部内边距 */
    background-color: var(--light-bg);
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .carousel-item {
        height: 60vh;
        min-height: 400px;
    }

    .carousel-caption h1 {
        font-size: 2rem;
    }

    .feature-item {
        margin-bottom: 2rem;
    }

    .service-card {
        margin-bottom: 2rem;
    }

    .contact-info-card {
        margin-bottom: 2rem;
    }

    .contact-form-wrapper,
    .map-wrapper {
        margin-bottom: 2rem;
    }
}

/* 按钮样式 */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    padding: 0.8rem 2rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #004494;
    border-color: #004494;
    transform: translateY(-2px);
}

/* 标题样式 */
h2 {
    font-weight: 700;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

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

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-item, .service-card, .contact-info-card {
    animation: fadeIn 0.6s ease-out;
}

/* 关于我们页面样式 */
.company-intro img {
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.timeline {
    position: relative;
    padding: 40px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
    transform: translateX(-50%);
}

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

.timeline-content {
    position: relative;
    width: 45%;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
}

.timeline-year {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    background: var(--primary-color);
    color: #fff;
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: bold;
    z-index: 1;
}

.culture-item {
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.culture-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.culture-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

/* 服务内容页面样式 */
.service-content {
    padding: 1.5rem;
}

.service-features {
    list-style: none;
    padding: 0;
    margin-top: 1rem;
}

.service-features li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.service-features i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.advantage-item {
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.process-timeline {
    position: relative;
    padding: 2rem 0;
}

.process-timeline:before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--primary-color);
}

.process-item {
    position: relative;
    margin-bottom: 3rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.process-number {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 1rem;
}

.process-content {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    width: 80%;
    max-width: 500px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .timeline::before {
        left: 30px;
    }
    
    .timeline-content {
        width: calc(100% - 80px);
        margin-left: 80px !important;
    }
    
    .timeline-year {
        left: 30px;
        transform: translate(-50%, -50%);
    }

    .timeline:before,
    .process-timeline:before {
        left: 20px;
    }

    .timeline-item,
    .process-item {
        justify-content: flex-start;
        padding-left: 40px;
    }

    .timeline-content,
    .process-content {
        width: 100%;
    }

    .process-number {
        position: absolute;
        left: 0;
    }
}