body {
    font-family: "Microsoft YaHei", sans-serif;
    margin: 0;
    background-color: #f9f9f9;
    color: #333;
}

header {
    /*background-color: #003366;*/
    color: white;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 20px;
    font-weight: bold;
}

.logo img {
    height: 40px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    margin: 0;
    padding: 0;
}

.nav-item {
    cursor: pointer;
    padding: 8px 14px;
    border-radius: 4px;
    transition: background 0.3s;
}

.nav-item:hover,
.nav-item.active {
    background-color: #0055aa;
}

main {
    padding: 40px;
    max-width: 1200px;
    margin: auto;
}

h2 {
    text-align: center;
    margin-bottom: 30px;
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}
.content-section p{
    text-indent: 2em;
}

.business-grid {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.biz-item {
    background: white;
    border-radius: 8px;
    width: 280px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.biz-item img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 6px;
    margin-bottom: 15px;
}

.cert-item {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 30px 0;
    gap: 30px;
}

.cert-item img {
    width: 600px;
    height: 400px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.cert-item p {
    max-width: 400px;
    font-size: 16px;
}

.row-reverse {
    flex-direction: row-reverse;
}

.site-footer {
    background-color: #f8f9fa;
    padding: 25px 15px;
    text-align: center;
    border-top: 1px solid #e1e1e1;
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: #555;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.copyright {
    margin: 0 0 10px 0;
    font-size: 14px;
    color: #666;
}

.company-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 13px;
}

.info-item {
    white-space: nowrap;
}

.info-separator {
    color: #bbb;
    font-weight: lighter;
}

#intro p {
    max-width: 800px;
    margin: 0 auto;
    margin-bottom: 25px;
    line-height: 30px;

}
.projects-container {
    max-width: 900px; /* 控制内容最大宽度 */
    margin: 30px auto; /* 居中显示 */
    padding: 0 20px; /* 页面边缘的留白 */
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.project-card {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.08);
    padding: 20px;
    transition: all 0.2s ease;
}

.project-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.project-card h3 {
    color: #004080;
    margin-bottom: 8px;
}

.project-card .amount {
    color: #2e7d32;
    font-weight: bold;
}
.culture-grid {
    display: flex;
    justify-content: center;
    gap: 40px; /* 每列之间的间距 */
    flex-wrap: nowrap; /* 禁止换行，确保一行 */
    margin-top: 40px;
}

.culture-item {
    background: #fff;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.06);
    padding: 30px 20px;
    text-align: center;
    border-radius: 12px;
    width: 260px; /* 适当控制宽度避免超出父容器 */
    flex-shrink: 0;
}
#culture .culture-grid {
    max-width: 1000px;
    margin: 0 auto;
}

.culture-item img {
    width: 48px;
    height: 48px;
    margin-bottom: 15px;
}

.culture-item h3 {
    font-size: 18px;
    margin-bottom: 10px;
    font-weight: bold;
}

.culture-item p {
    font-size: 14px;
    color: #555;
}
.you-list{
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(50px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.job-card span {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    text-align: center;
    display: block;
}
.job-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 20px;
}
.job-card {
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 20px;
    background-color: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.06);
    transition: transform 0.2s ease;
}
.job-card:hover {
    transform: translateY(-5px);
}
.job-card h3 {
    margin-top: 0;
    color: #003366;
}
.job-card p {
    color: #333;
    font-size: 15px;
    margin: 10px 0;
    height: 50px;
}
.job-card span {
    font-size: 14px;
    color: #888;
}

.icp-info {
    margin-top: 10px;
    font-size: 12px;
    color: #666;
}

.icp-info a {
    color: #666;
    text-decoration: none;
}

.icp-info a:hover {
    text-decoration: underline;
}