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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #f5f7fa;
}

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

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

ul {
    list-style: none;
}

.header {
    background: linear-gradient(135deg, #1a1f3a 0%, #2c3e50 100%);
    color: #fff;
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #f7b731;
}

.nav {
    display: flex;
    gap: 30px;
}

.nav a {
    color: #fff;
    font-size: 16px;
    transition: color 0.3s;
}

.nav a:hover {
    color: #f7b731;
}

.header-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 10px 25px;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, #f7b731 0%, #e67e22 100%);
    color: #1a1f3a;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(247, 183, 49, 0.4);
}

.btn-secondary {
    background: #fff;
    color: #1a1f3a;
}

.btn-secondary:hover {
    background: #f0f0f0;
}

.hero {
    background: linear-gradient(135deg, #1a1f3a 0%, #2c3e50 50%, #34495e 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

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

.hero p {
    font-size: 20px;
    margin-bottom: 40px;
    color: #ddd;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.hero-buttons .btn {
    padding: 15px 40px;
    font-size: 18px;
}

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

.breadcrumb a {
    color: #666;
}

.breadcrumb a:hover {
    color: #f7b731;
}

.breadcrumb span {
    color: #999;
    margin: 0 10px;
}

.breadcrumb .current {
    color: #f7b731;
}

.section {
    padding: 80px 0;
}

.section-bg {
    background: #fff;
}

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

.section-title h2 {
    font-size: 36px;
    color: #1a1f3a;
    margin-bottom: 15px;
}

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

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

.feature-item {
    background: #fff;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

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

.feature-icon {
    font-size: 50px;
    margin-bottom: 20px;
    color: #f7b731;
}

.feature-item h3 {
    font-size: 22px;
    color: #1a1f3a;
    margin-bottom: 15px;
}

.feature-item p {
    color: #666;
}

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

.stat-item h3 {
    font-size: 48px;
    color: #f7b731;
    margin-bottom: 10px;
}

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

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

.news-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

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

.news-image {
    height: 200px;
    background: linear-gradient(135deg, #1a1f3a 0%, #2c3e50 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f7b731;
    font-size: 40px;
}

.news-content {
    padding: 25px;
}

.news-date {
    color: #999;
    font-size: 14px;
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 18px;
    color: #1a1f3a;
    margin-bottom: 15px;
}

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

.news-list {
    background: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

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

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

.news-list-item .news-date {
    flex-shrink: 0;
    width: 120px;
    text-align: center;
    padding: 10px;
    background: #f5f7fa;
    border-radius: 5px;
}

.news-list-item .news-info h3 {
    font-size: 18px;
    color: #1a1f3a;
    margin-bottom: 10px;
}

.news-list-item .news-info h3:hover {
    color: #f7b731;
}

.news-list-item .news-info p {
    color: #666;
    font-size: 14px;
}

.news-detail {
    background: #fff;
    border-radius: 10px;
    padding: 50px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.news-detail h1 {
    font-size: 32px;
    color: #1a1f3a;
    margin-bottom: 20px;
}

.news-detail-meta {
    color: #999;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.news-detail-content {
    font-size: 16px;
    line-height: 2;
    color: #333;
}

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

.news-detail-content h2 {
    font-size: 24px;
    color: #1a1f3a;
    margin: 30px 0 20px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.product-item {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s;
}

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

.product-icon {
    font-size: 60px;
    color: #f7b731;
    margin-bottom: 20px;
}

.product-item h3 {
    font-size: 24px;
    color: #1a1f3a;
    margin-bottom: 15px;
}

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.contact-info h3 {
    font-size: 24px;
    color: #1a1f3a;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: #f5f7fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f7b731;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-text h4 {
    color: #1a1f3a;
    margin-bottom: 5px;
}

.contact-text p {
    color: #666;
}

.contact-form {
    background: #fff;
    border-radius: 10px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.contact-form h3 {
    font-size: 24px;
    color: #1a1f3a;
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    color: #1a1f3a;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #f7b731;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.about-content {
    background: #fff;
    border-radius: 10px;
    padding: 50px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.about-content h2 {
    font-size: 28px;
    color: #1a1f3a;
    margin-bottom: 20px;
}

.about-content p {
    color: #666;
    margin-bottom: 20px;
    font-size: 16px;
    line-height: 1.8;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.about-card {
    padding: 30px;
    background: #f5f7fa;
    border-radius: 10px;
    text-align: center;
}

.about-card h3 {
    color: #1a1f3a;
    margin-bottom: 15px;
}

.about-card p {
    color: #666;
    font-size: 14px;
}

.cta {
    background: linear-gradient(135deg, #1a1f3a 0%, #2c3e50 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

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

.cta p {
    font-size: 18px;
    margin-bottom: 40px;
    color: #ddd;
}

.footer {
    background: #1a1f3a;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    color: #f7b731;
    font-size: 24px;
    margin-bottom: 20px;
}

.footer-about p {
    color: #ccc;
    margin-bottom: 20px;
}

.footer-column h4 {
    font-size: 18px;
    margin-bottom: 25px;
    color: #fff;
}

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

.footer-column ul li a {
    color: #ccc;
    transition: color 0.3s;
}

.footer-column ul li a:hover {
    color: #f7b731;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #333;
    color: #999;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
}

@media (max-width: 992px) {
    .features,
    .products-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav,
    .header-buttons {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
    }
    .hero h1 {
        font-size: 32px;
    }
    .hero p {
        font-size: 16px;
    }
    .features,
    .products-grid,
    .news-grid,
    .stats,
    .footer-grid,
    .about-grid {
        grid-template-columns: 1fr;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .news-list-item {
        flex-direction: column;
    }
    .news-list-item .news-date {
        width: 100%;
    }
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: #1a1f3a;
    padding: 20px;
    z-index: 999;
}

.mobile-nav.active {
    display: block;
}

.mobile-nav ul li {
    margin-bottom: 15px;
}

.mobile-nav ul li a {
    color: #fff;
    font-size: 16px;
}

.mobile-nav-buttons {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.mobile-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #1a1f3a;
    padding: 15px 20px;
    display: none;
    justify-content: space-around;
    gap: 15px;
    z-index: 999;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.3);
}

@media (max-width: 768px) {
    .mobile-cta {
        display: flex;
    }
    body {
        padding-bottom: 80px;
    }
}

.mobile-cta .btn {
    flex: 1;
    text-align: center;
}