/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: 'Noto Sans SC', 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 35, 50, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(26, 35, 50, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: #ff6b35;
    font-weight: 700;
    font-size: 24px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #ff6b35;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff6b35;
    transition: width 0.3s ease;
}

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

.contact-btn {
    background: #ff6b35;
    color: #fff;
    padding: 10px 20px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.contact-btn:hover {
    background: #e55a2b;
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #fff;
    margin: 3px 0;
    transition: 0.3s;
}

/* 英雄区 */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 35, 50, 0.8), rgba(255, 107, 53, 0.3));
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    padding: 0 20px;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #ff6b35;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 40px;
    line-height: 1.8;
    opacity: 0.9;
}

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

.btn {
    padding: 15px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
    border: 2px solid transparent;
}

.btn-primary {
    background: #ff6b35;
    color: #fff;
    border-color: #ff6b35;
}

.btn-primary:hover {
    background: transparent;
    color: #ff6b35;
    border-color: #ff6b35;
    transform: translateY(-3px);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border-color: #fff;
}

.btn-secondary:hover {
    background: #fff;
    color: #1a2332;
    transform: translateY(-3px);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 30px;
    height: 30px;
    border: 2px solid #fff;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}

/* 通用区块样式 */
section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 80px;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    color: #1a2332;
    margin-bottom: 20px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: #ff6b35;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about {
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-info h3 {
    font-size: 1.5rem;
    color: #1a2332;
    margin-bottom: 15px;
    margin-top: 30px;
}

.about-info h3:first-child {
    margin-top: 0;
}

.about-info p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

.image-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.about-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

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

/* 业务领域 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.service-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    height: 200px;
}

.service-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.service-content {
    padding: 30px;
}

.service-content h3 {
    font-size: 1.5rem;
    color: #1a2332;
    margin-bottom: 15px;
}

.service-content p {
    color: #666;
    line-height: 1.6;
}

/* 项目案例 */
.projects {
    background: #f8f9fa;
}

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

.project-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    height: 300px;
    cursor: pointer;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(26, 35, 50, 0.9));
    color: #fff;
    padding: 30px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.project-item:hover .project-overlay {
    transform: translateY(0);
}

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

.project-overlay h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

/* 新闻中心 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.news-column h3 {
    font-size: 1.5rem;
    color: #1a2332;
    margin-bottom: 30px;
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 3px solid #ff6b35;
}

.news-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item {
    display: flex;
    gap: 15px;
    background: #fff;
    padding: 15px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.news-item:hover {
    transform: translateX(10px);
}

.news-img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    flex-shrink: 0;
}

.news-content h4 {
    font-size: 1rem;
    color: #1a2332;
    margin-bottom: 8px;
    line-height: 1.4;
}

.news-date {
    font-size: 0.9rem;
    color: #999;
}

/* 联系我们 */
.contact {
    background: #1a2332;
    color: #fff;
}

.contact .section-title {
    color: #fff;
}

.contact .section-subtitle {
    color: #ccc;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-item {
    margin-bottom: 40px;
}

.contact-item h3 {
    font-size: 1.3rem;
    color: #ff6b35;
    margin-bottom: 15px;
}

.contact-item p {
    margin-bottom: 10px;
    line-height: 1.6;
}

.contact-item a {
    color: #ff6b35;
    text-decoration: none;
}

.contact-item a:hover {
    text-decoration: underline;
}

.contact-images {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-top: 30px;
}

.contact-img {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: 8px;
}

.contact-form {
    background: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: #ff6b35;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #ccc;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 2px #ff6b35;
}

.form-group select option {
    background: #1a2332;
    color: #fff;
}

/* 页脚 */
.footer {
    background: #0f1419;
    color: #ccc;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-info h3 {
    color: #ff6b35;
    margin-bottom: 20px;
}

.footer-info p {
    margin-bottom: 10px;
    line-height: 1.6;
}

.footer-links h4,
.footer-services h4 {
    color: #fff;
    margin-bottom: 20px;
}

.footer-links ul,
.footer-services ul {
    list-style: none;
}

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

.footer-links a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #ff6b35;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    color: #999;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: rgba(26, 35, 50, 0.98);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 10px 0;
    }
    
    .contact-btn {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .service-images {
        grid-template-columns: 1fr;
        height: 150px;
    }
    
    .contact-images {
        grid-template-columns: 1fr;
    }
    
    .contact-img {
        height: 150px;
    }
    
    .news-item {
        flex-direction: column;
        text-align: center;
    }
    
    .news-img {
        width: 100%;
        height: 150px;
    }
}


/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(26, 35, 50, 0.98);
    backdrop-filter: blur(10px);
    min-width: 200px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
    padding: 10px 0;
    margin-top: 10px;
    z-index: 1001;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: #fff;
    text-decoration: none;
    font-weight: 400;
    font-size: 14px;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.dropdown-menu a:hover {
    background: rgba(255, 107, 53, 0.1);
    border-left-color: #ff6b35;
    color: #ff6b35;
    padding-left: 25px;
}

/* 新闻资讯样式 */
.news {
    padding: 80px 0;
    background: #f8f9fa;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.news-item {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

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

.news-content {
    padding: 25px;
}

.news-category {
    display: inline-block;
    background: #ff6b35;
    color: #fff;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 15px;
}

.news-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
    line-height: 1.4;
    color: #1a2332;
}

.news-excerpt {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 14px;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.news-date {
    color: #999;
    font-size: 13px;
}

.news-link {
    color: #ff6b35;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: color 0.3s ease;
}

.news-link:hover {
    color: #e55a2b;
}

/* 新闻列表页面样式 */
.news-categories {
    padding: 30px 0;
    background: #fff;
    border-bottom: 1px solid #eee;
}

.categories-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.category-btn {
    background: transparent;
    border: 2px solid #ddd;
    color: #666;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.category-btn:hover,
.category-btn.active {
    background: #ff6b35;
    border-color: #ff6b35;
    color: #fff;
}

.news-list {
    padding: 50px 0;
    background: #f8f9fa;
}

.news-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
}

.news-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.news-image {
    position: relative;
    flex-shrink: 0;
    width: 300px;
    height: 200px;
}

.news-image .news-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-image .news-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #ff6b35;
    color: #fff;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 500;
}

.news-card .news-content {
    flex: 1;
    padding: 30px;
}

.news-card .news-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 15px;
    line-height: 1.4;
}

.news-card .news-title a {
    color: #1a2332;
    text-decoration: none;
    transition: color 0.3s ease;
}

.news-card .news-title a:hover {
    color: #ff6b35;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.page-btn {
    background: #fff;
    border: 2px solid #ddd;
    color: #666;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.page-btn:hover,
.page-btn.active {
    background: #ff6b35;
    border-color: #ff6b35;
    color: #fff;
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* 新闻详情页面样式 */
.news-detail {
    padding: 100px 0 80px;
    background: #fff;
}

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

.news-header {
    margin-bottom: 40px;
    text-align: center;
}

.news-header .news-title {
    font-size: 32px;
    font-weight: 700;
    margin: 20px 0;
    line-height: 1.3;
    color: #1a2332;
}

.news-body .news-image {
    margin: 30px 0;
    text-align: center;
}

.news-body .detail-img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.news-body h3 {
    font-size: 24px;
    font-weight: 600;
    margin: 30px 0 15px;
    color: #1a2332;
}

.news-body p {
    margin-bottom: 20px;
    line-height: 1.8;
    color: #444;
    font-size: 16px;
}

.related-news {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 2px solid #eee;
}

.related-news h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 30px;
    color: #1a2332;
}

.related-news-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.related-item {
    display: flex;
    align-items: center;
    background: #f8f9fa;
    padding: 20px;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.related-item:hover {
    background: #fff;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.related-img {
    width: 80px;
    height: 60px;
    object-fit: cover;
    border-radius: 8px;
    margin-right: 15px;
}

.related-content h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.related-content h4 a {
    color: #1a2332;
    text-decoration: none;
    transition: color 0.3s ease;
}

.related-content h4 a:hover {
    color: #ff6b35;
}

.related-date {
    color: #999;
    font-size: 13px;
}

/* =================================
   子页面布局样式
   ================================= */

/* 页面头部样式 */
.page-header {
    position: relative;
    height: 60vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 70px;
}

.page-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.header-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.page-header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 35, 50, 0.7);
}

.page-header-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    max-width: 800px;
    padding: 0 20px;
}

.page-title {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-subtitle {
    font-size: 20px;
    font-weight: 300;
    margin-bottom: 30px;
    opacity: 0.9;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 30px;
    font-size: 14px;
}

.breadcrumb a {
    color: #fff;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.breadcrumb a:hover {
    opacity: 1;
}

.breadcrumb span {
    opacity: 0.6;
}

/* 服务介绍样式 */
.service-intro {
    padding: 80px 0;
    background: #fff;
}

.service-intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-intro-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #1a2332;
}

.intro-description {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.service-intro-image {
    text-align: center;
}

.intro-img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 服务项目样式 */
.service-projects {
    padding: 80px 0;
    background: #f8f9fa;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.project-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.project-icon {
    height: 200px;
    overflow: hidden;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

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

.project-content {
    padding: 30px;
}

.project-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a2332;
}

.project-content p {
    font-size: 16px;
    line-height: 1.6;
    color: #666;
    margin-bottom: 20px;
}

.project-features {
    list-style: none;
    padding: 0;
}

.project-features li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
    color: #555;
    font-size: 14px;
}

.project-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #ff6b35;
    font-weight: bold;
}

/* 技术优势样式 */
.technical-advantages {
    padding: 80px 0;
    background: #fff;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.advantage-item {
    text-align: center;
    padding: 30px 20px;
}

.advantage-icon {
    margin-bottom: 20px;
}

.icon-circle {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #ff6b35, #e55a2b);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

.icon-number {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.advantage-item h3 {
    font-size: 22px;
    font-weight: 600;
    margin: 20px 0 15px;
    color: #1a2332;
}

.advantage-item p {
    font-size: 16px;
    line-height: 1.6;
    color: #666;
}

/* 项目概述样式 */
.project-overview {
    padding: 80px 0;
    background: #fff;
}

.project-overview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.project-overview-text h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 30px;
    color: #1a2332;
}

.overview-description {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.project-info {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.info-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    border-left: 4px solid #ff6b35;
}

.info-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
    color: #1a2332;
}

.info-item p {
    font-size: 18px;
    font-weight: 500;
    color: #ff6b35;
    margin: 0;
}

.project-overview-image {
    text-align: center;
}

.overview-img {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 项目特色样式 */
.project-features {
    padding: 80px 0;
    background: #f8f9fa;
}

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

.feature-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    font-weight: 600;
    margin: 20px 0 15px;
    color: #1a2332;
}

.feature-card p {
    font-size: 16px;
    line-height: 1.6;
    color: #666;
}

/* 施工工艺样式 */
.construction-process {
    padding: 80px 0;
    background: #fff;
}

.process-timeline {
    margin-top: 50px;
    position: relative;
}

.process-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #ff6b35;
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 50px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}

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

.timeline-marker {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #ff6b35;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    position: relative;
    z-index: 2;
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.3);
}

.timeline-content {
    flex: 1;
    max-width: 45%;
    margin-left: 50px;
}

.timeline-content h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #1a2332;
}

.timeline-content p {
    font-size: 16px;
    line-height: 1.6;
    color: #666;
}

/* 项目成果样式 */
.project-results {
    padding: 80px 0;
    background: #f8f9fa;
}

.results-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.results-text h3 {
    font-size: 24px;
    font-weight: 600;
    margin: 30px 0 15px;
    color: #1a2332;
}

.results-text h3:first-child {
    margin-top: 0;
}

.results-text p {
    font-size: 16px;
    line-height: 1.8;
    color: #666;
    margin-bottom: 20px;
}

.results-images {
    text-align: center;
}

.image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.result-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 联系咨询样式 */
.contact-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a2332, #2c3e50);
    color: #fff;
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 18px;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

/* =================================
   响应式设计
   ================================= */

/* 平板设备 */
@media (max-width: 1024px) {
    .page-title {
        font-size: 40px;
    }

    .page-subtitle {
        font-size: 18px;
    }

    .service-intro-content,
    .project-overview-content,
    .results-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .project-info {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        flex-direction: column;
        text-align: center;
    }

    .timeline-item:nth-child(odd) {
        flex-direction: column;
    }

    .timeline-item:nth-child(odd) .timeline-content {
        margin-right: 0;
        text-align: center;
    }

    .timeline-content {
        max-width: 100%;
        margin-left: 0;
        margin-top: 20px;
    }

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

/* 手机设备 */
@media (max-width: 768px) {
    .page-header {
        height: 50vh;
        min-height: 300px;
    }

    .page-title {
        font-size: 32px;
    }

    .page-subtitle {
        font-size: 16px;
    }

    .breadcrumb {
        flex-wrap: wrap;
    }

    .service-intro-text h2,
    .project-overview-text h2 {
        font-size: 28px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .advantages-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

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

    .cta-content h2 {
        font-size: 28px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .project-card {
        margin: 0 10px;
    }

    .feature-card,
    .advantage-item {
        padding: 30px 20px;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .page-header-content {
        padding: 0 15px;
    }

    .page-title {
        font-size: 28px;
    }

    .service-intro,
    .service-projects,
    .technical-advantages,
    .project-overview,
    .project-features,
    .construction-process,
    .project-results,
    .contact-cta {
        padding: 60px 0;
    }

    .project-content {
        padding: 20px;
    }

    .feature-card,
    .advantage-item {
        padding: 25px 15px;
    }
}