* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    color: #333;
    background: #f5f7fa;
    line-height: 1.6;
}
a {
    text-decoration: none;
    color: #0066cc;
}
a:hover {
    color: #004499;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.header {
    background: linear-gradient(135deg, #0c1e3e 0%, #1a3a6a 100%);
    color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.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-main {
    padding: 15px 0;
}
.header-main .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 28px;
    font-weight: bold;
    color: #fff;
}
.logo span {
    color: #ffcc00;
}
.nav {
    display: flex;
    gap: 30px;
}
.nav a {
    color: white;
    font-size: 16px;
    padding: 5px 10px;
    border-radius: 4px;
    transition: background 0.3s;
}
.nav a:hover, .nav a.active {
    background: rgba(255,255,255,0.2);
}
.header-btns {
    display: flex;
    gap: 15px;
}
.btn {
    padding: 12px 28px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
}
.btn-primary {
    background: linear-gradient(135deg, #ffcc00 0%, #ff9900 100%);
    color: #0c1e3e;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255,204,0,0.4);
}
.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}
.btn-secondary:hover {
    background: white;
    color: #0c1e3e;
}
.breadcrumb {
    background: white;
    padding: 15px 0;
    border-bottom: 1px solid #e0e0e0;
}
.breadcrumb a, .breadcrumb span {
    font-size: 14px;
    color: #666;
}
.breadcrumb a:hover {
    color: #0066cc;
}
.banner {
    background: linear-gradient(135deg, #0c1e3e 0%, #1a3a6a 50%, #0d2855 100%);
    padding: 80px 0;
    color: white;
}
.banner h1 {
    font-size: 48px;
    margin-bottom: 20px;
}
.banner p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}
.section {
    padding: 80px 0;
}
.section-white {
    background: white;
}
.section-gray {
    background: #f5f7fa;
}
.section-title {
    text-align: center;
    margin-bottom: 50px;
}
.section-title h2 {
    font-size: 36px;
    color: #0c1e3e;
    margin-bottom: 15px;
}
.section-title p {
    color: #666;
    font-size: 16px;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}
.card {
    background: white;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}
.card-icon {
    font-size: 48px;
    color: #ffcc00;
    margin-bottom: 20px;
}
.card h3 {
    font-size: 22px;
    color: #0c1e3e;
    margin-bottom: 15px;
}
.card p {
    color: #666;
    font-size: 15px;
}
.news-item {
    display: flex;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid #e0e0e0;
}
.news-item:last-child {
    border-bottom: none;
}
.news-date {
    background: #0c1e3e;
    color: white;
    padding: 10px 15px;
    border-radius: 6px;
    text-align: center;
    min-width: 80px;
}
.news-date .day {
    font-size: 24px;
    font-weight: bold;
}
.news-date .month {
    font-size: 12px;
}
.news-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
}
.news-content h3 a {
    color: #0c1e3e;
}
.news-content h3 a:hover {
    color: #ffcc00;
}
.news-content p {
    color: #666;
    font-size: 14px;
}
.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}
.product-img {
    height: 200px;
    background: linear-gradient(135deg, #0c1e3e 0%, #1a3a6a 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 60px;
}
.product-info {
    padding: 25px;
}
.product-info h3 {
    font-size: 20px;
    color: #0c1e3e;
    margin-bottom: 10px;
}
.product-info p {
    color: #666;
    margin-bottom: 15px;
}
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}
.stat-item h3 {
    font-size: 42px;
    color: #ffcc00;
    margin-bottom: 10px;
}
.stat-item p {
    color: #666;
    font-size: 16px;
}
.contact-info {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}
.contact-info h3 {
    font-size: 24px;
    color: #0c1e3e;
    margin-bottom: 25px;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    background: #f5f7fa;
    border-radius: 8px;
}
.contact-item .icon {
    font-size: 28px;
    color: #ffcc00;
}
.contact-form {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}
.contact-form h3 {
    font-size: 24px;
    color: #0c1e3e;
    margin-bottom: 25px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}
.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 15px;
}
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: #ffcc00;
}
.footer {
    background: #0c1e3e;
    color: white;
    padding: 60px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-col h4 {
    font-size: 18px;
    margin-bottom: 25px;
    color: #ffcc00;
}
.footer-col p {
    color: #aaa;
    margin-bottom: 15px;
    font-size: 14px;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 12px;
}
.footer-col ul li a {
    color: #aaa;
    font-size: 14px;
}
.footer-col ul li a:hover {
    color: #ffcc00;
}
.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #888;
    font-size: 14px;
}
.fixed-btns {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 999;
}
.fixed-btns .btn {
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}
.mobile-menu {
    display: none;
}
@media (max-width: 992px) {
    .grid-4, .grid-3, .stats {
        grid-template-columns: repeat(2, 1fr);
    }
    .nav {
        display: none;
    }
    .mobile-menu {
        display: block;
        font-size: 28px;
        cursor: pointer;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 768px) {
    .grid-4, .grid-3, .grid-2, .stats {
        grid-template-columns: 1fr;
    }
    .banner h1 {
        font-size: 32px;
    }
    .banner p {
        font-size: 16px;
    }
    .header-main .container {
        flex-wrap: wrap;
        gap: 15px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .news-item {
        flex-direction: column;
    }
}