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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

header {
    background: linear-gradient(135deg, #1a365d 0%, #2c5282 100%);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    display: flex;
    align-items: center;
    color: #fff;
    font-size: 24px;
    font-weight: bold;
    text-decoration: none;
}

.logo-img {
    width: 50px;
    height: 50px;
    margin-right: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-img img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

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

.nav li {
    margin-left: 35px;
}

.nav li a {
    color: #fff;
    text-decoration: none;
    font-size: 16px;
    padding: 8px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
    position: relative;
}

.nav li a:hover {
    background: rgba(255,255,255,0.15);
}

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

.burger {
    display: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
}

.slider {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
}

.slides {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.slide {
    min-width: 100%;
    height: 500px;
    position: relative;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.5);
}

.slide-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.slide-content p {
    font-size: 20px;
    margin-bottom: 30px;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

.btn {
    display: inline-block;
    padding: 12px 35px;
    background: #3182ce;
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-size: 16px;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.4s;
    animation-fill-mode: both;
}

.btn:hover {
    background: #2c5282;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(49, 130, 206, 0.4);
}

.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
}

.dot {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    margin: 0 10px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #fff;
    transform: scale(1.2);
}

.section {
    padding: 80px 0;
}

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

.section-title h2 {
    font-size: 36px;
    color: #1a365d;
    margin-bottom: 15px;
    position: relative;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #3182ce, #2c5282);
    border-radius: 2px;
}

.section-title p {
    font-size: 16px;
    color: #666;
}

.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-img {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e0 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.about-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text h3 {
    font-size: 28px;
    color: #1a365d;
    margin-bottom: 20px;
}

.about-text p {
    font-size: 16px;
    color: #555;
    margin-bottom: 15px;
    text-align: justify;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.stat-item {
    text-align: center;
    padding: 30px;
    background: #f8fafc;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.stat-item .number {
    font-size: 48px;
    font-weight: bold;
    color: #3182ce;
    margin-bottom: 10px;
}

.stat-item .label {
    font-size: 16px;
    color: #666;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.service-item {
    background: #fff;
    padding: 50px 40px;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
    text-align: center;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(49, 130, 206, 0.18);
}

.service-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #e6f7ff 0%, #bae7ff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    font-size: 48px;
    overflow: hidden;
}

.service-icon img {
    width: 80%;
    height: 80%;
    object-fit: contain;
}

.service-item h3 {
    font-size: 24px;
    color: #1a365d;
    margin-bottom: 20px;
}

.service-item p {
    font-size: 15px;
    color: #555;
    line-height: 1.9;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-item {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.product-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(49, 130, 206, 0.15);
}

.product-img {
    width: 100%;
    height: 220px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    overflow: hidden;
}

.product-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {
    padding: 25px;
}

.product-info h3 {
    font-size: 20px;
    color: #1a365d;
    margin-bottom: 10px;
}

.product-info p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
}

.product-info .more {
    color: #3182ce;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.product-info .more:hover {
    color: #2c5282;
    padding-left: 5px;
}

.news-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-item {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.news-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.news-img {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, #faf5ff 0%, #f3e8ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    overflow: hidden;
}

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

.news-info {
    padding: 25px;
}

.news-date {
    font-size: 12px;
    color: #999;
    margin-bottom: 10px;
}

.news-info h3 {
    font-size: 18px;
    color: #1a365d;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-info p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
}

.news-info .more {
    color: #3182ce;
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    display: inline-block;
    margin-top: 15px;
    transition: all 0.3s ease;
}

.news-info .more:hover {
    color: #2c5282;
    padding-left: 5px;
}

.partners {
    background: #f8fafc;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 40px;
}

.partner-item {
    height: 80px;
    background: #fff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: #999;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

footer {
    background: #1a365d;
    color: #fff;
    padding: 60px 0 30px;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 25px;
    color: #fff;
}

.footer-section p {
    font-size: 14px;
    color: #a0aec0;
    line-height: 1.8;
    margin-bottom: 15px;
}

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

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

.footer-section ul li a {
    color: #a0aec0;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.footer-section ul li a:hover {
    color: #fff;
    padding-left: 5px;
}

.contact-info i {
    margin-right: 10px;
    color: #3182ce;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 14px;
    color: #a0aec0;
}

.page-title {
    background: linear-gradient(135deg, #3182ce 0%, #4299e1 100%);
    padding: 60px 0;
    text-align: center;
    color: #fff;
}

.page-title h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

.page-title p {
    font-size: 16px;
    opacity: 0.8;
}

.page-content {
    padding: 60px 0;
}

.about-content h2 {
    font-size: 28px;
    color: #1a365d;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e2e8f0;
}

.about-content h3 {
    font-size: 22px;
    color: #2c5282;
    margin: 30px 0 15px;
}

.about-content p {
    font-size: 16px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 15px;
    text-align: justify;
}

.about-content ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.about-content ul li {
    font-size: 16px;
    color: #555;
    margin-bottom: 10px;
}

.about-content ul li::marker {
    color: #3182ce;
}

.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.product-detail-img {
    width: 100%;
    height: 450px;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
}

.product-detail-info h2 {
    font-size: 32px;
    color: #1a365d;
    margin-bottom: 20px;
}

.product-detail-info .category {
    display: inline-block;
    padding: 5px 15px;
    background: #e6f7ff;
    color: #3182ce;
    border-radius: 20px;
    font-size: 14px;
    margin-bottom: 20px;
}

.product-detail-info p {
    font-size: 16px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 20px;
}

.product-detail-info ul {
    margin-left: 20px;
    margin-bottom: 30px;
}

.product-detail-info ul li {
    font-size: 16px;
    color: #555;
    margin-bottom: 10px;
}

.news-detail {
    max-width: 800px;
    margin: 0 auto;
}

.news-detail-header {
    margin-bottom: 40px;
}

.news-detail-header h1 {
    font-size: 32px;
    color: #1a365d;
    margin-bottom: 20px;
    line-height: 1.4;
}

.news-detail-meta {
    display: flex;
    gap: 20px;
    font-size: 14px;
    color: #999;
}

.news-detail-content {
    font-size: 16px;
    color: #555;
    line-height: 1.9;
}

.news-detail-content img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 20px 0;
}

.news-detail-content h3 {
    font-size: 22px;
    color: #2c5282;
    margin: 30px 0 15px;
}

.news-detail-content p {
    margin-bottom: 20px;
    text-align: justify;
}

.news-detail-content ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.news-detail-content ul li {
    margin-bottom: 10px;
}

.careers-list {
    max-width: 800px;
    margin: 0 auto;
}

.career-item {
    background: #fff;
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.career-item:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 25px rgba(49, 130, 206, 0.15);
}

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

.career-header h3 {
    font-size: 22px;
    color: #1a365d;
}

.career-header .salary {
    color: #3182ce;
    font-weight: bold;
    font-size: 18px;
}

.career-info {
    display: flex;
    gap: 30px;
    margin-bottom: 15px;
    font-size: 14px;
    color: #666;
}

.career-info span {
    display: flex;
    align-items: center;
}

.career-info span i {
    margin-right: 5px;
}

.career-desc {
    font-size: 15px;
    color: #555;
    line-height: 1.7;
}

.apply-btn {
    display: inline-block;
    padding: 10px 30px;
    background: #3182ce;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    font-size: 14px;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.apply-btn:hover {
    background: #2c5282;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-info-section h2 {
    font-size: 28px;
    color: #1a365d;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 30px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #e6f7ff 0%, #bae7ff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    font-size: 22px;
    color: #3182ce;
}

.contact-text h4 {
    font-size: 18px;
    color: #1a365d;
    margin-bottom: 5px;
}

.contact-text p {
    font-size: 15px;
    color: #666;
}

.contact-map {
    width: 100%;
    height: 400px;
    background: #e2e8f0;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #999;
    margin-bottom: 40px;
    overflow: hidden;
}

.contact-map img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.contact-form {
    background: #fff;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.contact-form h3 {
    font-size: 22px;
    color: #1a365d;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 15px;
    font-family: inherit;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3182ce;
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.form-group textarea {
    height: 150px;
    resize: none;
}

.form-submit {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #3182ce 0%, #2c5282 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(49, 130, 206, 0.3);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .news-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #1a365d;
        flex-direction: column;
        padding: 20px;
    }
    .nav li {
        margin: 10px 0;
    }
    .burger {
        display: block;
    }
    .nav.active {
        display: flex;
    }
    .slider {
        height: 350px;
    }
    .slide {
        height: 350px;
    }
    .slide-content h1 {
        font-size: 30px;
    }
    .slide-content p {
        font-size: 16px;
    }
    .about-intro {
        grid-template-columns: 1fr;
    }
    .services-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    .products-grid {
        grid-template-columns: 1fr;
    }
    .news-list {
        grid-template-columns: 1fr;
    }
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-content {
        grid-template-columns: 1fr;
    }
    .product-detail {
        grid-template-columns: 1fr;
    }
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .stats {
        grid-template-columns: 1fr;
    }
    .partners-grid {
        grid-template-columns: 1fr;
    }
    .slide-content h1 {
        font-size: 24px;
    }
    .slide-content p {
        font-size: 14px;
    }
}