* {
    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: #333;
    transition: color 0.3s;
}

a:hover {
    color: #0066cc;
}

ul, li {
    list-style: none;
}

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

.container {
    width: 1200px;
    margin: 0 auto;
}

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

.header-top {
    background: #1a1a2e;
    color: #fff;
    padding: 8px 0;
    font-size: 14px;
}

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

.header-top a {
    color: #ffd700;
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 28px;
    font-weight: bold;
    color: #0066cc;
}

.logo span {
    color: #ffd700;
}

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

nav ul li a {
    font-size: 16px;
    font-weight: 500;
    padding: 10px 0;
    display: block;
}

nav ul li a:hover,
nav ul li a.active {
    color: #0066cc;
    border-bottom: 2px solid #0066cc;
}

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

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    color: #fff;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0052a3 0%, #007acc 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,102,204,0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, #ffd700 0%, #ffb700 100%);
    color: #1a1a2e;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #e6c200 0%, #e6a500 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255,215,0,0.3);
}

.banner {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.banner::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0,102,204,0.2) 0%, transparent 70%);
    top: -100px;
    right: -100px;
}

.banner .container {
    position: relative;
    z-index: 1;
}

.banner-content {
    max-width: 700px;
}

.banner h1 {
    font-size: 48px;
    margin-bottom: 20px;
    line-height: 1.2;
}

.banner h1 span {
    color: #ffd700;
}

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

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

.section {
    padding: 80px 0;
}

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

.section-title h2 {
    font-size: 36px;
    color: #1a1a2e;
    margin-bottom: 15px;
}

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

.section-title h2 span {
    color: #0066cc;
}

.features {
    background: #fff;
}

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

.feature-item {
    background: #f8f9fa;
    padding: 40px 30px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #fff;
}

.feature-item h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #1a1a2e;
}

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

.products {
    background: #f5f7fa;
}

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

.product-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    transition: all 0.3s;
}

.product-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

.product-img {
    height: 200px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: #ffd700;
}

.product-content {
    padding: 30px;
}

.product-content h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #1a1a2e;
}

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

.product-content .btn {
    width: 100%;
    text-align: center;
}

.news {
    background: #fff;
}

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

.news-item {
    background: #f8f9fa;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
}

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

.news-img {
    height: 180px;
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #fff;
}

.news-content {
    padding: 25px;
}

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

.news-content h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #1a1a2e;
    line-height: 1.4;
}

.news-content h3 a:hover {
    color: #0066cc;
}

.news-content p {
    color: #666;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.news-more {
    color: #0066cc;
    font-size: 14px;
    font-weight: 500;
}

.cta {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #fff;
    text-align: center;
    padding: 80px 0;
}

.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 #e0e0e0;
}

.breadcrumb ul {
    display: flex;
    gap: 10px;
    font-size: 14px;
}

.breadcrumb ul li a {
    color: #666;
}

.breadcrumb ul li a:hover {
    color: #0066cc;
}

.breadcrumb ul li.active {
    color: #0066cc;
}

.about-content {
    background: #fff;
    padding: 60px 0;
}

.about-text h2 {
    font-size: 28px;
    margin-bottom: 25px;
    color: #1a1a2e;
}

.about-text p {
    margin-bottom: 20px;
    color: #666;
    line-height: 2;
    font-size: 16px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-top: 50px;
}

.about-box {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}

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

.about-box ul li {
    padding: 10px 0;
    color: #666;
    border-bottom: 1px solid #e0e0e0;
}

.about-box ul li:last-child {
    border-bottom: none;
}

.news-list {
    background: #fff;
    padding: 60px 0;
}

.news-list-item {
    display: flex;
    gap: 30px;
    padding: 30px 0;
    border-bottom: 1px solid #e0e0e0;
}

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

.news-list-img {
    width: 300px;
    height: 200px;
    flex-shrink: 0;
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: #fff;
}

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

.news-list-content h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.news-list-content h3 a {
    color: #1a1a2e;
}

.news-list-content h3 a:hover {
    color: #0066cc;
}

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

.news-list-content p {
    color: #666;
    line-height: 1.8;
}

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

.pagination a,
.pagination span {
    padding: 10px 18px;
    border: 1px solid #e0e0e0;
    border-radius: 5px;
    color: #666;
}

.pagination a:hover,
.pagination span.active {
    background: #0066cc;
    color: #fff;
    border-color: #0066cc;
}

.news-detail {
    background: #fff;
    padding: 60px 0;
}

.news-article {
    max-width: 900px;
    margin: 0 auto;
}

.news-article h1 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #1a1a2e;
}

.news-article-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
    color: #999;
    font-size: 14px;
}

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

.news-article-content p {
    margin-bottom: 25px;
}

.news-article-content h2 {
    font-size: 24px;
    margin: 40px 0 20px;
    color: #1a1a2e;
}

.news-article-content h3 {
    font-size: 20px;
    margin: 30px 0 15px;
    color: #0066cc;
}

.contact-content {
    background: #fff;
    padding: 60px 0;
}

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

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #1a1a2e;
}

.contact-info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e0e0e0;
}

.contact-info-item:last-child {
    border-bottom: none;
}

.contact-info-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #0066cc 0%, #0099ff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    flex-shrink: 0;
}

.contact-info-text h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #1a1a2e;
}

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

.contact-form {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 10px;
}

.contact-form h3 {
    font-size: 24px;
    margin-bottom: 30px;
    color: #1a1a2e;
}

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

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: #1a1a2e;
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0066cc;
}

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

.contact-form .btn {
    width: 100%;
}

footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0 20px;
}

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

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

.footer-about h3 span {
    color: #ffd700;
}

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

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 25px;
    color: #ffd700;
}

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

.footer-links ul li a {
    color: #aaa;
    font-size: 14px;
}

.footer-links ul li a:hover {
    color: #ffd700;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #888;
    font-size: 14px;
}

.fixed-btns {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.fixed-btns .btn {
    padding: 15px 25px;
    font-size: 14px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

@media (max-width: 1200px) {
    .container {
        width: 95%;
    }
}

@media (max-width: 992px) {
    .features-grid,
    .products-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .banner h1 {
        font-size: 36px;
    }
}

@media (max-width: 768px) {
    nav ul {
        gap: 15px;
    }
    nav ul li a {
        font-size: 14px;
    }
    .header-btns .btn {
        padding: 8px 15px;
        font-size: 14px;
    }
    .banner {
        padding: 50px 0;
    }
    .banner h1 {
        font-size: 28px;
    }
    .section {
        padding: 50px 0;
    }
    .features-grid,
    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    .news-list-item {
        flex-direction: column;
    }
    .news-list-img {
        width: 100%;
        height: 200px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .fixed-btns {
        left: 0;
        right: 0;
        bottom: 0;
        flex-direction: row;
        justify-content: center;
        padding: 15px;
        background: rgba(26, 26, 46, 0.95);
    }
    .fixed-btns .btn {
        flex: 1;
        max-width: 200px;
    }
    .header-main {
        flex-wrap: wrap;
        gap: 15px;
    }
    .logo {
        width: 100%;
        text-align: center;
    }
}