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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

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

/* 导航栏样式 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #0056b3;
}

.logo span {
    color: #666;
    font-weight: normal;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #0056b3;
}

/* 英雄区域样式 */
.hero {
    margin-top: 80px;
    padding: 80px 0;
    background-color: #f8f9fa;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1;
}

.hero-content h1 {
    font-size: 48px;
    line-height: 1.2;
    color: #0056b3;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn-primary,
.btn-secondary {
    padding: 12px 30px;
    font-size: 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #0056b3;
    color: white;
}

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

.btn-secondary {
    background-color: #fff;
    color: #0056b3;
    border: 1px solid #0056b3;
}

.btn-secondary:hover {
    background-color: #0056b3;
    color: white;
    transform: translateY(-2px);
}

.hero-image {
    flex: 1;
}

.responsive-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

/* 关于我们样式 */
.about {
    padding: 100px 0;
    background-color: #fff;
}

.about h2 {
    text-align: center;
    font-size: 36px;
    color: #0056b3;
    margin-bottom: 60px;
    position: relative;
}

.about h2::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background-color: #0056b3;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-image {
    flex: 1;
    padding: 20px;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    display: block;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 28px;
    color: #0056b3;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: #666;
    margin-bottom: 30px;
    line-height: 1.8;
}



.core-advantages {
    margin-top: 20px;
}

.advantage {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f8f9fa;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.advantage i {
    font-size: 24px;
    color: #007bff;
    margin-right: 15px;
    margin-top: 5px;
}

.advantage-text {
    flex: 1;
}

.advantage-text strong {
    display: block;
    font-size: 18px;
    margin-bottom: 8px;
    color: #333;
}

.advantage-text p {
    margin: 0;
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

/* 响应式布局调整 */
@media (max-width: 768px) {
    .advantage {
        flex-direction: column;
        text-align: center;
    }
    
    .advantage i {
        margin-right: 0;
        margin-bottom: 10px;
    }
}

/* 解决方案样式 */
.solutions {
    padding: 100px 0;
    background-color: #f8f9fa;
}

.solutions h2 {
    text-align: center;
    font-size: 36px;
    color: #0056b3;
    margin-bottom: 20px;
    position: relative;
}

.solutions h2::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background-color: #0056b3;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
}

.solutions > p {
    text-align: center;
    font-size: 16px;
    color: #666;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.card {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

.card-icon {
    font-size: 48px;
    color: #0056b3;
    margin-bottom: 20px;
    text-align: center;
}

.card h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 20px;
    text-align: center;
}

.card ul {
    list-style: none;
}

.card li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 14px;
    color: #666;
}

.card li i {
    color: #0056b3;
    font-size: 16px;
}

/* 确保按钮在卡片底部对齐 */
.card {
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

.card-button-wrapper {
    margin-top: auto;
    width: 100%;
}

.btn-details {
    width: 100%;
    padding: 10px;
    background-color: #0056b3;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    margin: 0;
}

/* 客户案例样式 */
.cases {
    padding: 100px 0;
    background-color: #fff;
}

.cases h2 {
    text-align: center;
    font-size: 36px;
    color: #0056b3;
    margin-bottom: 20px;
    position: relative;
}

.cases h2::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 3px;
    background-color: #0056b3;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
}

.cases > p {
    text-align: center;
    font-size: 16px;
    color: #666;
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.case-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
}

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

.case-card h3 {
    font-size: 18px;
    color: #333;
    padding: 20px;
    padding-bottom: 10px;
}

.case-card p {
    font-size: 14px;
    color: #666;
    padding: 0 20px 20px;
    margin-bottom: 20px;
}

.btn-details {
    display: block;
    width: calc(100% - 40px);
    margin: 0 20px 20px;
    padding: 10px;
    background-color: #0056b3;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-details:hover {
    background-color: #004494;
}

/* 页脚样式 */
.footer {
    background-color: #003366;
    color: #fff;
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.footer-logo h3 span {
    color: #66a3ff;
}

.footer-logo p {
    color: #ccc;
    font-size: 14px;
    line-height: 1.6;
}

.footer-links h4,
.footer-services h4,
.footer-contact h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

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

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

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

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

.footer-services li {
    color: #ccc;
}

.footer-contact p {
    color: #ccc;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    border-top: 1px solid #1a4780;
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: #ccc;
    font-size: 14px;
}

.footer-social {
    display: flex;
    gap: 20px;
}

.footer-social a {
    color: #ccc;
    font-size: 20px;
    transition: color 0.3s;
}

.footer-social a:hover {
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero .container,
    .about-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-image {
        margin-top: 40px;
    }
    
    .about-text {
        margin-top: 40px;
    }
    
    .mission-points {
        align-items: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 576px) {
    .hero-content h1 {
        font-size: 28px;
    }
    
    .about h2,
    .solutions h2,
    .cases h2 {
        font-size: 28px;
    }
    
    .card {
        padding: 30px 20px;
    }
    
    .solution-cards,
    .case-cards {
        grid-template-columns: 1fr;
    }
}