* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

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

/* Header Styles */
header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #0066cc;
    text-decoration: none;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #0066cc;
}

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 5px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://p11-flow-imagex-sign.byteimg.com/tos-cn-i-a9rns2rl98/rc/pc/super_tool/f36abc94f1334db69dbe429ec015c331~tplv-a9rns2rl98-image.image?lk3s=8e244e95&rcl=20260408200839C53D0194A87889A32DE2&rrcfp=f06b921b&x-expires=1778242153&x-signature=ed0i%2B22OFea9Ar9I13Pw1SgP%2Bto%3D') center/cover no-repeat;
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: #0066cc;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #0055aa;
}

/* Sections */
.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: #333;
    position: relative;
    padding-bottom: 20px;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background-color: #0066cc;
}

/* Services Section */
.services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service {
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.service-icon {
    font-size: 48px;
    color: #0066cc;
    margin-bottom: 20px;
}

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

/* About Section */
.about-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-text h3 {
    font-size: 28px;
    margin-bottom: 20px;
    color: #0066cc;
}

.about-image {
    flex: 1;
    min-width: 300px;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
}

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

.case {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.case img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case:hover img {
    transform: scale(1.1);
}

.case-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.8);
    color: #fff;
    padding: 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.case:hover .case-content {
    transform: translateY(0);
}

/* News Section */
.news {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.news-item {
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

.news-content {
    padding: 20px;
}

.news-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.news-date {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}

/* Jobs Section */
.jobs {
    max-width: 800px;
    margin: 0 auto;
}

.job-item {
    background-color: #fff;
    padding: 30px;
    margin-bottom: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.job-title {
    font-size: 22px;
    font-weight: bold;
    color: #0066cc;
}

.job-salary {
    font-size: 18px;
    color: #ff6600;
}

.job-info {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 14px;
    color: #666;
}

/* Contact Section */
.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #0066cc;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.contact-icon {
    font-size: 24px;
    color: #0066cc;
    margin-right: 15px;
}

.contact-form {
    flex: 1;
    min-width: 300px;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

/* Footer */
footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
    margin-bottom: 30px;
}

.footer-column {
    flex: 1;
    min-width: 200px;
}

.footer-column h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #0066cc;
}

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

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

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

.footer-column ul li a:hover {
    color: #0066cc;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
}

/* Lazy Loading */
.lazy {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lazy.loaded {
    opacity: 1;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

/* Responsive Design */
@media screen and (max-width: 768px) {
    .nav-links {
        position: absolute;
        right: 0;
        top: 70px;
        background-color: #fff;
        width: 50%;
        height: calc(100vh - 70px);
        flex-direction: column;
        align-items: center;
        justify-content: space-around;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .nav-links li {
        margin-left: 0;
        opacity: 0;
    }

    .burger {
        display: block;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero p {
        font-size: 18px;
    }

    .section-title h2 {
        font-size: 28px;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 28px;
    }

    .section {
        padding: 50px 0;
    }

    .service,
    .job-item {
        padding: 20px;
    }
}

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #0066cc;
    color: #fff;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 999;
}

.scroll-top.visible {
    opacity: 1;
}

.scroll-top:hover {
    background-color: #0055aa;
}