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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

.section {
    padding: 80px 0;
}

.section:nth-child(even) {
    background-color: #fff;
}

h1,
h2,
h3,
h4 {
    font-weight: 700;
    line-height: 1.2;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    color: #003366;
    position: relative;
}

h2:after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: #00a0e9;
    margin: 15px auto;
    border-radius: 2px;
}

h3 {
    color: #003366;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

p {
    margin-bottom: 15px;
    font-size: 1rem;
}

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

/* 头部导航 */
header {
    background: linear-gradient(135deg, #003366 0%, #0066cc 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo h1 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.logo p {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0;
}

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

nav ul li {
    margin-left: 15px;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 8px 15px;
    font-size: 18px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

nav ul li a:hover,
nav ul li a.active {
    background-color: rgba(255, 255, 255, 0.2);
}

/* 主要内容 */
main {
    min-height: calc(100vh - 200px);
}

/* 公司简介 */
#intro {
    background: linear-gradient(rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.9)), url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%23f0f8ff"/><path d="M20,20 Q50,5 80,20 T80,80 Q50,95 20,80 T20,20" fill="none" stroke="%2300a0e9" stroke-width="0.5"/></svg>');
}

.intro-content p {
    font-size: 1.1rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #555;
}

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

.feature {
    text-align: center;
    padding: 30px 20px;
    border-radius: 8px;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature i {
    font-size: 2.5rem;
    color: #00a0e9;
    margin-bottom: 20px;
}

.feature h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #003366;
}

/* 宣传横幅 */
#banner {
    background: linear-gradient(135deg, #0066cc 0%, #00a0e9 100%);
    color: white;
    text-align: center;
    padding: 100px 0;
}

.banner-content h2 {
    font-size: 2.8rem;
    margin-bottom: 20px;
}

.banner-content p {
    font-size: 1.3rem;
    max-width: 700px;
    margin: 0 auto 30px;
    opacity: 0.9;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: #00a0e9;
    color: white;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid #00a0e9;
    cursor: pointer;
}

.btn:hover {
    background: transparent;
    color: #00a0e9;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-outline {
    background: transparent;
    color: #00a0e9;
}

.btn-outline:hover {
    background: #00a0e9;
    color: white;
}

/* 新闻动态 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.news-grid2 {
    grid-template-columns: repeat(auto-fit, minmax(550px, 1fr));
}

.news-item {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
    padding: 25px;
}

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

.news-item h3 {
    color: #003366;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.date {
    color: #00a0e9;
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 0.9rem;
}

/* 业务范围 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.service-item {
    text-align: center;
    padding: 40px 20px;
    border-radius: 8px;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.service-item i {
    font-size: 3rem;
    color: #00a0e9;
    margin-bottom: 25px;
}

.service-item h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #003366;
}

.services-grid3 {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* 成功案例 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.case-item {
    background: white;
    border-radius: 8px;
    padding: 40px 25px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.case-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.case-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #0066cc 0%, #00a0e9 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.case-icon i {
    font-size: 2rem;
    color: white;
}

.case-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #003366;
}

/* 人才发展 */
#careers {
    background: linear-gradient(rgba(0, 160, 233, 0.9), rgba(0, 160, 233, 0.9)), url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><circle cx="20" cy="20" r="3" fill="white" opacity="0.3"/><circle cx="50" cy="50" r="2" fill="white" opacity="0.5"/><circle cx="80" cy="80" r="4" fill="white" opacity="0.2"/></svg>');
    color: white;
}

#careers h2 {
    color: white;
}

#careers h2:after {
    background: white;
}

.careers-content p {
    font-size: 1.1rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

.careers-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.careers-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease;
}

.careers-item:hover {
    transform: translateY(-10px);
}

.careers-item i {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.careers-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

/* 产品中心 */
#products-page .product-categories {
    text-align: center;
    margin-bottom: 50px;
}

.category-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
}

.category-list a {
    display: inline-block;
    padding: 10px 25px;
    background: #fff;
    color: #003366;
    text-decoration: none;
    border-radius: 30px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.category-list a:hover,
.category-list a.active {
    background: #00a0e9;
    color: white;
    transform: translateY(-3px);
}

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

.product-item {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.product-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.product-image {
    background: linear-gradient(135deg, #0066cc 0%, #00a0e9 100%);
    padding: 30px;
    text-align: center;
}

.product-image i {
    font-size: 4rem;
    color: white;
}

.product-info {
    padding: 30px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.product-info h3 {
    color: #003366;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.product-description {
    color: #666;
    margin-bottom: 20px;
    flex-grow: 1;
}

.product-features {
    list-style: none;
    margin: 20px 0;
    padding: 0;
}

.product-features li {
    margin-bottom: 10px;
    color: #555;
}

.product-features i {
    color: #00a0e9;
    margin-right: 10px;
}

.product-info .btn {
    margin-top: 15px;
    align-self: flex-start;
}

/* 服务中心 */
.services-intro p {
    text-align: center;
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #555;
}

.service-features {
    list-style: none;
    text-align: left;
    margin: 15px 0 0 15px;
    padding: 0;
}

.service-features li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
}

.service-features li i {
    color: #00a0e9;
    position: absolute;
    left: 0;
    top: 4px;
    font-size: 1rem;
}

.service-process {
    margin-top: 60px;
}

.service-process h3 {
    text-align: center;
    margin-bottom: 40px;
}

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

.process-step {
    text-align: center;
    padding: 30px 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    position: relative;
    transition: all 0.3s ease;
}

.process-step:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #0066cc 0%, #00a0e9 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 20px;
}

.process-step h4 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #003366;
}

/* 知识库 */
.knowledge-intro p {
    text-align: center;
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #555;
}

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

.category-item {
    background: white;
    border-radius: 8px;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.category-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.category-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #0066cc 0%, #00a0e9 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.category-icon i {
    font-size: 2rem;
    color: white;
}

.category-item h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #003366;
}

.category-item p {
    margin-bottom: 20px;
    color: #666;
}

.knowledge-articles h3 {
    margin-bottom: 30px;
}

.article-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.article-list2 {
    grid-template-columns: repeat(auto-fit, minmax(550px, 1fr));
}

.article-item {
    background: white;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.article-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.article-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
}

.category {
    background: #00a0e9;
    color: white;
    padding: 3px 10px;
    border-radius: 4px;
    font-size: 0.8rem;
}

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

.article-item h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
}

.article-item h4 a {
    color: #003366;
    text-decoration: none;
    transition: color 0.3s ease;
}

.article-item h4 a:hover {
    color: #00a0e9;
}

.article-item p {
    color: #666;
    font-size: 0.95rem;
}

.subscribe-section {
    background: linear-gradient(135deg, #0066cc 0%, #00a0e9 100%);
    border-radius: 10px;
    padding: 50px 30px;
    text-align: center;
    color: white;
}

.subscribe-content h3 {
    color: white;
    margin-bottom: 15px;
}

.subscribe-content p {
    margin-bottom: 25px;
    opacity: 0.9;
    font-size: 1.1rem;
}

.subscribe-form {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
    gap: 10px;
}

.subscribe-form input {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 30px;
    font-size: 1rem;
}

.subscribe-form button {
    background: white;
    color: #00a0e9;
    border: none;
    padding: 12px 25px;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.subscribe-form button:hover {
    background: #f0f0f0;
    transform: translateY(-3px);
}

/* 常见问题 */
.faq-intro p {
    text-align: center;
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 40px;
    color: #555;
}

.faq-intro a {
    color: #00a0e9;
    text-decoration: none;
    font-weight: 600;
}

.faq-intro a:hover {
    text-decoration: underline;
}

.faq-list {
    margin-bottom: 50px;
}

.faq-item {
    background: white;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    background: #f8f9fa;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: #eef5ff;
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
    color: #003366;
}

.faq-question i {
    color: #00a0e9;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 20px 25px;
    max-height: 1000px;
}

.faq-answer ul {
    padding-left: 20px;
    margin: 15px 0;
}

.faq-answer li {
    margin-bottom: 10px;
}

.faq-answer a {
    color: #00a0e9;
    text-decoration: none;
}

.faq-answer a:hover {
    text-decoration: underline;
}

.faq-contact {
    text-align: center;
    background: white;
    border-radius: 8px;
    padding: 40px 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.faq-contact h3 {
    margin-bottom: 15px;
}

.faq-contact p {
    color: #666;
    margin-bottom: 25px;
    font-size: 1.1rem;
}

/* 联系我们 */
.contact-info {
    margin-bottom: 50px;
}

.company-info {
    background: white;
    border-radius: 8px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.company-info p {
    font-size: 1.1rem;
    margin-bottom: 15px;
}

.company-info i {
    color: #00a0e9;
    margin-right: 10px;
    width: 20px;
}

.departments h3 {
    margin-bottom: 30px;
    text-align: center;
}

.department-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.department-item {
    background: white;
    border-radius: 8px;
    padding: 30px 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.department-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.department-item h4 {
    color: #003366;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.department-item h4 i {
    color: #00a0e9;
    margin-right: 10px;
}

.department-item p {
    margin-bottom: 10px;
    color: #555;
}

.department-item a {
    color: #00a0e9;
    text-decoration: none;
}

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

.contact-map {
    margin-bottom: 50px;
}

.contact-map h3 {
    text-align: center;
    margin-bottom: 30px;
}

.map-placeholder {
    background: #eef5ff;
    border-radius: 8px;
    padding: 50px 30px;
    text-align: center;
}

.map-placeholder i {
    font-size: 3rem;
    color: #00a0e9;
    margin-bottom: 20px;
}

.contact-message {
    background: white;
    border-radius: 8px;
    padding: 40px 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-message h3 {
    text-align: center;
    margin-bottom: 20px;
}

.contact-message p {
    text-align: center;
    color: #555;
    margin-bottom: 15px;
}

.contact-message ul {
    max-width: 500px;
    margin: 20px auto;
    padding-left: 0;
    list-style: none;
}

.contact-message li {
    padding: 10px 0 10px 30px;
    position: relative;
    border-bottom: 1px solid #eee;
}

.contact-message li:before {
    content: "•";
    color: #00a0e9;
    font-size: 1.5rem;
    position: absolute;
    left: 0;
    top: 5px;
}

/* 页脚 */
footer {
    background: #003366;
    color: white;
    padding: 60px 0 30px;
}

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

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
    color: #fff;
}

.footer-section h3:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 3px;
    background: #00a0e9;
}

.footer-section ul {
    list-style: none;
}

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

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

.footer-section ul li a:hover {
    color: #00a0e9;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .section {
        padding: 60px 0;
    }

    h2 {
        font-size: 2rem;
    }

    header .container {
        flex-direction: column;
        text-align: center;
    }

    nav ul {
        margin-top: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    nav ul li {
        margin: 5px 10px;
    }

    #banner {
        padding: 60px 0;
    }

    .banner-content h2 {
        font-size: 2rem;
    }

    .banner-content p {
        font-size: 1.1rem;
    }

    .category-list {
        gap: 10px;
    }

    .category-list a {
        padding: 8px 15px;
        font-size: 0.9rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
    }

    .subscribe-form {
        flex-direction: column;
    }

    .process-steps,
    .category-grid,
    .article-list,
    .department-grid {
        grid-template-columns: 1fr;
    }

    .article-meta {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .section {
        padding: 40px 0;
    }

    h2 {
        font-size: 1.7rem;
    }

    .intro-features,
    .services-grid,
    .cases-grid,
    .careers-features,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .feature,
    .service-item,
    .case-item,
    .careers-item,
    .news-item {
        padding: 20px 15px;
    }

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

    .product-info {
        padding: 20px;
    }

    .product-image {
        padding: 20px;
    }

    .product-image i {
        font-size: 3rem;
    }

    .faq-question {
        padding: 15px 20px;
    }

    .faq-item.active .faq-answer {
        padding: 15px 20px;
    }
}