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

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

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

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

header {
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-top {
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 0;
    font-size: 14px;
}

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

.header-contact {
    display: flex;
    gap: 20px;
}

.header-contact i {
    margin-right: 5px;
}

.header-nav {
    padding: 15px 0;
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
}

.logo span {
    color: #ffcc00;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

nav ul li a {
    color: #fff;
    font-size: 16px;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
    color: #ffcc00;
}

nav ul li a.active::after,
nav ul li a:hover::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: #ffcc00;
}

.banner {
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 50%, #3d70b8 100%);
    color: #fff;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><polygon points="200,0 200,200 0,200" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: cover;
}

.banner .container {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}

.banner-content {
    flex: 1;
}

.banner h1 {
    font-size: 42px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.banner h1 span {
    color: #ffcc00;
}

.banner p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
    max-width: 600px;
}

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

.btn {
    display: inline-block;
    padding: 14px 36px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-primary {
    background: #ffcc00;
    color: #1a3a6b;
}

.btn-primary:hover {
    background: #e6b800;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-secondary:hover {
    background: #fff;
    color: #1a3a6b;
}

.section {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 36px;
    color: #1a3a6b;
    margin-bottom: 15px;
}

.section-title h2 span {
    color: #ff6600;
}

.section-title p {
    color: #666;
    font-size: 16px;
    max-width: 700px;
    margin: 0 auto;
}

.section-gray {
    background: #f8f9fa;
}

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

.feature-item {
    background: #fff;
    padding: 40px 30px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: #ffcc00;
}

.feature-item h3 {
    font-size: 20px;
    color: #1a3a6b;
    margin-bottom: 15px;
}

.feature-item p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

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

.about-content {
    flex: 1;
}

.about-content h3 {
    font-size: 28px;
    color: #1a3a6b;
    margin-bottom: 20px;
}

.about-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.9;
}

.about-list {
    margin: 30px 0;
}

.about-list li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    color: #333;
}

.about-list li::before {
    content: '✓';
    display: inline-flex;
    width: 24px;
    height: 24px;
    background: #ff6600;
    color: #fff;
    border-radius: 50%;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-size: 14px;
}

.about-image {
    flex: 1;
}

.about-image-placeholder {
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    height: 400px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item h3 {
    font-size: 48px;
    color: #ff6600;
    font-weight: bold;
    margin-bottom: 10px;
}

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

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

.service-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

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

.service-image {
    height: 200px;
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 48px;
}

.service-content {
    padding: 30px;
}

.service-content h3 {
    font-size: 22px;
    color: #1a3a6b;
    margin-bottom: 15px;
}

.service-content p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.service-content .btn {
    padding: 10px 28px;
    font-size: 14px;
}

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

.news-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s;
}

.news-item:hover {
    transform: translateY(-5px);
}

.news-image {
    height: 180px;
    background: linear-gradient(135deg, #2c5aa0 0%, #3d70b8 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 36px;
}

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 14px;
    color: #999;
}

.news-content h3 {
    font-size: 18px;
    color: #1a3a6b;
    margin-bottom: 15px;
    line-height: 1.5;
}

.news-content h3:hover {
    color: #ff6600;
}

.news-content p {
    color: #666;
    line-height: 1.8;
    font-size: 14px;
}

.cta {
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.breadcrumb {
    background: #f8f9fa;
    padding: 15px 0;
    border-bottom: 1px solid #e9ecef;
}

.breadcrumb .container {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #1a3a6b;
}

.breadcrumb a:hover {
    color: #ff6600;
}

.breadcrumb .current {
    color: #ff6600;
}

.page-header {
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 15px;
}

.page-header p {
    font-size: 16px;
    opacity: 0.9;
}

.content-wrapper {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.main-content {
    flex: 1;
}

.sidebar {
    width: 350px;
    flex-shrink: 0;
}

.sidebar-widget {
    background: #fff;
    border-radius: 8px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.sidebar-widget h3 {
    font-size: 20px;
    color: #1a3a6b;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 2px solid #ff6600;
}

.category-list li {
    padding: 12px 0;
    border-bottom: 1px solid #e9ecef;
}

.category-list li:last-child {
    border-bottom: none;
}

.category-list li a {
    display: flex;
    justify-content: space-between;
    color: #333;
    transition: color 0.3s;
}

.category-list li a:hover {
    color: #ff6600;
}

.contact-sidebar {
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    color: #fff;
}

.contact-sidebar h3 {
    color: #ffcc00;
    border-bottom-color: #ffcc00;
}

.contact-sidebar li {
    display: flex;
    align-items: center;
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.contact-sidebar li:last-child {
    border-bottom: none;
}

.contact-sidebar i {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
}

.news-list .news-item {
    display: flex;
    gap: 20px;
    padding: 25px 0;
    border-bottom: 1px solid #e9ecef;
}

.news-list .news-item:first-child {
    padding-top: 0;
}

.news-list .news-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.news-list .news-image {
    width: 280px;
    height: 180px;
    flex-shrink: 0;
    border-radius: 8px;
}

.news-list .news-content {
    padding: 0;
    flex: 1;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.pagination a,
.pagination span {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    border: 1px solid #e9ecef;
    color: #666;
    transition: all 0.3s;
}

.pagination a:hover,
.pagination span.active {
    background: #1a3a6b;
    color: #fff;
    border-color: #1a3a6b;
}

.news-detail {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.news-detail-header {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e9ecef;
}

.news-detail-header h1 {
    font-size: 28px;
    color: #1a3a6b;
    margin-bottom: 20px;
    line-height: 1.4;
}

.news-detail-body p {
    margin-bottom: 20px;
    line-height: 1.9;
    color: #333;
    text-indent: 2em;
}

.news-detail-body h3 {
    font-size: 22px;
    color: #1a3a6b;
    margin: 30px 0 20px;
}

.news-detail-body ul {
    margin: 20px 0;
    padding-left: 30px;
}

.news-detail-body li {
    margin-bottom: 10px;
    color: #333;
    line-height: 1.8;
}

.news-tags {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid #e9ecef;
}

.news-tags span {
    display: inline-block;
    background: #f8f9fa;
    padding: 6px 15px;
    border-radius: 20px;
    margin-right: 10px;
    margin-bottom: 10px;
    font-size: 14px;
    color: #666;
}

.news-tags span:hover {
    background: #1a3a6b;
    color: #fff;
}

.about-intro {
    margin-bottom: 60px;
}

.about-intro h2 {
    font-size: 32px;
    color: #1a3a6b;
    margin-bottom: 25px;
}

.about-intro p {
    color: #666;
    line-height: 1.9;
    margin-bottom: 20px;
    text-indent: 2em;
}

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

.team-member {
    text-align: center;
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.team-avatar {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 48px;
}

.team-member h3 {
    font-size: 20px;
    color: #1a3a6b;
    margin-bottom: 5px;
}

.team-member .position {
    color: #ff6600;
    font-size: 14px;
    margin-bottom: 15px;
}

.team-member p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
}

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

.product-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.product-image {
    height: 300px;
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 64px;
}

.product-content {
    padding: 35px;
}

.product-content h2 {
    font-size: 24px;
    color: #1a3a6b;
    margin-bottom: 20px;
}

.product-content p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 25px;
}

.product-features {
    margin: 25px 0;
}

.product-features li {
    padding: 10px 0;
    color: #333;
    display: flex;
    align-items: center;
}

.product-features li::before {
    content: '✓';
    color: #ff6600;
    font-weight: bold;
    margin-right: 10px;
}

.product-price {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 20px;
    border-top: 1px solid #e9ecef;
}

.price {
    font-size: 28px;
    color: #ff6600;
    font-weight: bold;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.contact-card {
    background: #fff;
    padding: 40px 30px;
    text-align: center;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.contact-card i {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #1a3a6b 0%, #2c5aa0 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 28px;
    color: #ffcc00;
}

.contact-card h3 {
    font-size: 20px;
    color: #1a3a6b;
    margin-bottom: 15px;
}

.contact-card p {
    color: #666;
    line-height: 1.8;
}

.contact-form-wrapper {
    background: #fff;
    padding: 50px;
    border-radius: 8px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.contact-form-wrapper h2 {
    font-size: 28px;
    color: #1a3a6b;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #333;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid #e9ecef;
    border-radius: 4px;
    font-size: 15px;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #1a3a6b;
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

footer {
    background: #0f1e36;
    color: #fff;
    padding-top: 60px;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 20px;
}

.footer-logo span {
    color: #ffcc00;
}

.footer-about p {
    color: #aaa;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-title {
    font-size: 18px;
    margin-bottom: 25px;
    color: #ffcc00;
}

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

.footer-links li a {
    color: #aaa;
    transition: color 0.3s;
}

.footer-links li a:hover {
    color: #ffcc00;
    padding-left: 5px;
}

.footer-bottom {
    padding: 25px 0;
    text-align: center;
    color: #aaa;
    font-size: 14px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 28px;
    cursor: pointer;
}

.float-contact {
    position: fixed;
    right: 20px;
    bottom: 50%;
    transform: translateY(50%);
    z-index: 999;
    display: none;
}

.float-contact .btn {
    display: block;
    width: 160px;
    text-align: center;
    margin-bottom: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

@media (max-width: 992px) {
    .banner h1 {
        font-size: 32px;
    }

    .features {
        grid-template-columns: repeat(2, 1fr);
    }

    .services,
    .news {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-wrapper {
        flex-direction: column;
    }

    .content-wrapper {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
    }

    .footer-top {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-list {
        grid-template-columns: 1fr;
    }

    .contact-info {
        grid-template-columns: 1fr;
    }

    .team {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    nav ul {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .banner h1 {
        font-size: 26px;
    }

    .banner-buttons {
        flex-direction: column;
    }

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

    .footer-top {
        grid-template-columns: 1fr;
    }

    .team,
    .stats {
        grid-template-columns: 1fr;
    }

    .news-list .news-item {
        flex-direction: column;
    }

    .news-list .news-image {
        width: 100%;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .float-contact {
        display: block;
    }

    .header-contact {
        flex-direction: column;
        gap: 5px;
    }

    .section {
        padding: 50px 0;
    }
}