/* 定义CSS变量 */
    :root {
        --primary-color: #2c5aa0;
        --primary-dark: #1a3d7a;
        --primary-light: #4a7bc8;
        --dark-color: #343a40;
        --light-color: #f8f9fa;
        --white-color: #ffffff;
    }
/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 顶部导航栏 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: fixed;
    width: 100%;
    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 h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #1a365d;
    margin-left: 10px;
}

.logo-icon {
    color: #3a86ff;
    font-size: 2rem;
}

nav ul {
    display: flex;
    list-style: none;
}

nav li {
    margin-left: 30px;
}

nav a {
    text-decoration: none;
    color: #4a5568;
    font-weight: 500;
    font-size: 1.05rem;
    transition: color 0.3s;
    padding: 5px 0;
    position: relative;
}

nav a:hover {
    color: #3a86ff;
}

nav a.active {
    color: #3a86ff;
}

nav a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #3a86ff;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: #4a5568;
}

/* 主视觉区域 */
.hero {
    background: linear-gradient(135deg, #1a365d 0%, #2d3748 100%);
    color: white;
    padding: 160px 0 100px;
    margin-top: 70px;
    text-align: center;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

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

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 1rem;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: #3a86ff;
    color: white;
}

.btn-primary:hover {
    background-color: #2667d6;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(58, 134, 255, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* 业务板块 */
.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: #1a365d;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    width: 70px;
    height: 3px;
    background-color: #3a86ff;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

.section-title p {
    color: #718096;
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.1rem;
}

.services {
    padding: 50px 0;
    background-color: white;
}

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

.service-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 40px 30px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e2e8f0;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08);
}

.service-icon {
    font-size: 3rem;
    color: #3a86ff;
    margin-bottom: 25px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #1a365d;
}

.service-card p {
    color: #718096;
    margin-bottom: 25px;
}

.keywords {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.keyword {
    background-color: #e2e8f0;
    color: #4a5568;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* 公司优势 */
/* 公司优势 */
.advantages {
    padding: 100px 0;
    background-color: white;
}

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

.advantage-item {
    background-color: white;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
}

.advantage-icon {
    font-size: 2.5rem;
    color: #3a86ff;
    margin-bottom: 20px;
}

.advantage-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #1a365d;
}

.advantage-item p {
    color: #718096;
}


 /* 新闻/文章模块 - 新布局 */
.news {
    padding: 100px 0;
    background-color: #f8f9fa;
}

/* 主新闻大图布局 */
.main-news-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    margin-bottom: 50px;
}

.main-news-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.main-news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.main-news-image {
    height: 350px;
    width: 100%;
    overflow: hidden;
}

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

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

.main-news-content {
    padding: 30px;
}

.main-news-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 0.9rem;
    color: #718096;
}

.main-news-category {
    background-color: #e2e8f0;
    color: #4a5568;
    padding: 6px 15px;
    border-radius: 20px;
    font-weight: 600;
}

.main-news-date {
    display: flex;
    align-items: center;
}

.main-news-date i {
    margin-right: 5px;
}

.main-news-content h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #1a365d;
    line-height: 1.3;
}

.main-news-content p {
    color: #718096;
    margin-bottom: 25px;
    font-size: 1.1rem;
    line-height: 1.7;
}

.main-news-link {
    color: #3a86ff;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s;
}

.main-news-link:hover {
    color: #2667d6;
}

.main-news-link i {
    margin-left: 8px;
    transition: transform 0.3s;
}

.main-news-link:hover i {
    transform: translateX(5px);
}

/* 小新闻列表布局 */
.small-news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.small-news-item {
    background-color: white;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.small-news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.small-news-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-size: 0.8rem;
    color: #718096;
}

.small-news-category {
    background-color: #e2e8f0;
    color: #4a5568;
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 500;
}

.small-news-date {
    display: flex;
    align-items: center;
}

.small-news-date i {
    margin-right: 5px;
    font-size: 0.8rem;
}

.small-news-item h4 {
    font-size: 1.1rem;
    margin-bottom: 12px;
    color: #1a365d;
    line-height: 1.4;
    flex-grow: 1;
}

.small-news-link {
    color: #3a86ff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s;
}

.small-news-link:hover {
    color: #2667d6;
}

.small-news-link i {
    margin-left: 5px;
    font-size: 0.8rem;
    transition: transform 0.3s;
}

.small-news-link:hover i {
    transform: translateX(3px);
}

/* 更多新闻网格布局 */
.more-news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.more-news-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.more-news-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.more-news-image {
    height: 200px;
    width: 100%;
    overflow: hidden;
}

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

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

.more-news-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.more-news-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    font-size: 0.85rem;
    color: #718096;
}

.more-news-category {
    background-color: #e2e8f0;
    color: #4a5568;
    padding: 4px 12px;
    border-radius: 20px;
    font-weight: 500;
}

.more-news-date {
    display: flex;
    align-items: center;
}

.more-news-date i {
    margin-right: 5px;
}

.more-news-content h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #1a365d;
    line-height: 1.4;
}

.more-news-content p {
    color: #718096;
    margin-bottom: 20px;
    flex-grow: 1;
}

.more-news-link,.more-news-content h3 a,.main-news-title a,.small-news-title a {
    color: #3a86ff;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    transition: color 0.3s;
}

.more-news-link:hover {
    color: #2667d6;
}

.more-news-link i {
    margin-left: 8px;
    transition: transform 0.3s;
}

.more-news-link:hover i {
    transform: translateX(5px);
}

.news-btn-container {
    text-align: center;
}

.btn-outline {
    background-color: transparent;
    color: #3a86ff;
    border: 2px solid #3a86ff;
    padding: 12px 30px;
}

.btn-outline:hover {
    background-color: #3a86ff;
    color: white;
}


/* 页脚 */
footer {
    background-color: #1a365d;
    color: white;
    padding: 70px 0 30px;
}

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

.footer-column h3 {
    font-size: 1.3rem;
    margin-bottom: 25px;
    color: #fff;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    width: 40px;
    height: 2px;
    background-color: #3a86ff;
    bottom: 0;
    left: 0;
}

.footer-column p {
    color: #cbd5e0;
    margin-bottom: 20px;
    line-height: 1.8;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #cbd5e0;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #3a86ff;
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #a0aec0;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    nav ul {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.05);
        transform: translateY(-150%);
        transition: transform 0.4s ease;
        z-index: 999;
    }
    
    nav ul.active {
        transform: translateY(0);
    }
    
    nav li {
        margin: 15px 0;
    }
    
    .hero {
        padding: 140px 0 80px;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .section-title h2 {
        font-size: 2rem;
    }
    
    .service-card {
        padding: 30px 20px;
    }
}