@charset "utf-8";
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; }
body { font-family: PingFang SC, Microsoft Yahei, sans-serif; color: #333; line-height: 1.6; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
.clearfix:after { content: "."; display: block; height: 0; clear: both; visibility: hidden; }
.row { display: flex; flex-wrap: wrap; margin: 0 -15px; }
.col-3, .col-4, .col-6, .col-8, .col-12 { float: left; padding: 0 15px; }
.col-3 { width: 25%; }
.col-4 { width: 33.333%; }
.col-6 { width: 50%; }
.col-8 { width: 66.666%; }
.col-12 { width: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Header */
.site-header { background: #fff; border-bottom: 1px solid #eee; padding: 15px 0; position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo img { max-height: 45px; }
.header-right { display: flex; align-items: center; gap: 30px; }
.nav-list { display: flex; gap: 25px; }
.nav-list .menu-item a { color: #333; font-weight: 500; font-size: 15px; transition: color 0.3s; }
.nav-list .menu-item a:hover { color: #0067a0; }
.header-actions { display: flex; align-items: center; gap: 15px; }
.btn-outline { display: inline-block; padding: 6px 16px; border: 1px solid #0067a0; color: #0067a0; border-radius: 3px; font-size: 12px; font-weight: 600; letter-spacing: 0.5px; transition: all 0.3s; }
.btn-outline:hover { background: #0067a0; color: #fff; }
.lang-switcher { font-size: 13px; color: #666; }
.lang-switcher a { color: #666; transition: color 0.3s; }
.lang-switcher a:hover, .lang-switcher a.active { color: #0067a0; font-weight: 600; }
.lang-separator { margin: 0 4px; color: #ccc; }

/* Slider */
.slider { background: linear-gradient(135deg, #0067a0 0%, #00a8ff 100%); color: #fff; padding: 120px 0; text-align: center; }
.slider-content { max-width: 700px; margin: 0 auto; }
.slider h1 { font-size: 48px; margin-bottom: 20px; font-weight: 700; }
.slider p { font-size: 18px; margin-bottom: 35px; opacity: 0.9; }
.btn-primary { display: inline-block; padding: 12px 30px; background: #fff; color: #0067a0; border-radius: 4px; font-weight: 600; transition: all 0.3s; border: none; cursor: pointer; }
.btn-primary:hover { background: #f0f0f0; }
.btn-secondary { display: inline-block; padding: 12px 30px; background: transparent; color: #fff; border: 2px solid #fff; border-radius: 4px; font-weight: 600; margin-left: 15px; transition: all 0.3s; }
.btn-secondary:hover { background: rgba(255,255,255,0.15); }

/* Section Title */
.section-title { text-align: center; font-size: 32px; margin-bottom: 40px; color: #333; font-weight: 600; }

/* Features */
.features { padding: 60px 0; background: #f8f9fa; }
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.feature-item { text-align: center; padding: 30px 20px; background: #fff; border-radius: 8px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); transition: transform 0.3s; }
.feature-item:hover { transform: translateY(-3px); }
.feature-icon { width: 70px; height: 70px; margin: 0 auto 20px; background: #0067a0; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 28px; }
.feature-item h3 { font-size: 18px; margin-bottom: 10px; color: #333; }
.feature-item p { color: #666; font-size: 14px; }

/* Products */
.products-home { padding: 60px 0; }
.products-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 25px; }
.product-item { border: 1px solid #eee; border-radius: 8px; overflow: hidden; transition: box-shadow 0.3s, transform 0.3s; background: #fff; }
.product-item:hover { box-shadow: 0 8px 25px rgba(0,0,0,0.1); transform: translateY(-3px); }
.product-item a { display: block; }
.product-item img { width: 100%; height: 200px; object-fit: contain; background: #f9f9f9; padding: 15px; }
.product-item h3 { padding: 12px 15px; font-size: 15px; color: #333; font-weight: 500; }
.product-item p { padding: 0 15px 15px; color: #888; font-size: 13px; }
.view-more { text-align: center; margin-top: 40px; }

/* News Home */
.news-home { padding: 60px 0; background: #f8f9fa; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.news-item { background: #fff; border-radius: 8px; overflow: hidden; transition: box-shadow 0.3s; }
.news-item:hover { box-shadow: 0 5px 20px rgba(0,0,0,0.08); }
.news-item a { display: block; padding: 20px; }
.news-item img { width: 100%; height: 160px; object-fit: cover; border-radius: 6px; margin-bottom: 15px; }
.news-item .date { color: #999; font-size: 12px; display: block; margin-bottom: 8px; }
.news-item h3 { font-size: 16px; margin-bottom: 8px; color: #333; font-weight: 500; }
.news-item p { color: #666; font-size: 13px; }

/* Stats */
.stats { background: #0067a0; color: #fff; padding: 60px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; text-align: center; }
.stat-item { padding: 20px; }
.stat-number { font-size: 48px; font-weight: 700; display: block; line-height: 1.2; }
.stat-label { font-size: 15px; opacity: 0.8; display: block; margin-top: 8px; }

/* Contact */
.contact-home { padding: 60px 0; text-align: center; background: #fff; }
.contact-desc { color: #666; margin-bottom: 30px; max-width: 600px; margin-left: auto; margin-right: auto; }

/* Footer */
.site-footer { background: #1a1a1a; color: #fff; padding: 50px 0 20px; }
.footer-widgets { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.footer-widget h4 { margin-bottom: 20px; font-size: 16px; font-weight: 600; }
.footer-widget p { color: #aaa; line-height: 1.8; font-size: 14px; }
.footer-widget a { color: #aaa; text-decoration: none; transition: color 0.3s; }
.footer-widget a:hover { color: #fff; }
.footer-menu li { margin-bottom: 8px; font-size: 14px; }
.social-links { display: flex; gap: 10px; }
.social-links a { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.1); display: inline-flex; align-items: center; justify-content: center; color: #ccc; font-size: 13px; transition: all 0.3s; }
.social-links a:hover { background: #0067a0; color: #fff; }
.footer-bottom { padding-top: 25px; margin-top: 35px; border-top: 1px solid rgba(255,255,255,0.1); text-align: center; }
.footer-bottom p { color: #888; font-size: 13px; }

/* Page Banner */
.page-banner { background-size: cover; background-position: center; padding: 80px 0; position: relative; min-height: 200px; display: flex; align-items: center; }
.page-banner::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,103,160,0.7); }
.banner-content { position: relative; z-index: 1; text-align: center; color: #fff; width: 100%; }
.banner-content h1 { font-size: 36px; font-weight: 600; }

/* Content Sections */
.news-section, .products-section, .page-content-section, .article-section, .product-detail-section { padding: 60px 0; }

/* News List (inner page) */
.news-section .news-grid { grid-template-columns: 1fr; }
.news-section .news-item { display: flex; gap: 20px; border: 1px solid #eee; padding: 20px; border-radius: 8px; background: #fff; }
.news-section .news-item a { display: flex; gap: 20px; padding: 0; }
.news-section .news-image { flex-shrink: 0; }
.news-section .news-image img { width: 220px; height: 160px; object-fit: cover; border-radius: 6px; margin-bottom: 0; }
.news-section .news-content { flex: 1; }
.news-section .news-content .date { color: #999; font-size: 13px; }
.news-section .news-content h3 { font-size: 18px; margin: 8px 0; }
.news-section .news-content h3 a { color: #333; }
.news-section .news-content h3 a:hover { color: #0067a0; }
.news-section .news-content p { color: #666; font-size: 14px; }

/* Products List (inner page) */
.products-section .products-grid { grid-template-columns: repeat(3, 1fr); }

/* Article Detail */
.article-title { font-size: 28px; margin-bottom: 15px; color: #333; }
.article-meta { color: #999; font-size: 13px; margin-bottom: 30px; padding-bottom: 15px; border-bottom: 1px solid #eee; }
.article-meta span { margin-right: 20px; }
.article-body { line-height: 1.8; font-size: 15px; color: #444; }
.article-body img { max-width: 100%; }
.article-nav { margin-top: 40px; padding-top: 20px; border-top: 1px solid #eee; }
.article-nav p { margin: 10px 0; font-size: 14px; color: #666; }
.article-nav a { color: #0067a0; }
.article-nav a:hover { text-decoration: underline; }

/* Product Detail */
.product-detail { display: flex; gap: 40px; }
.product-images { flex: 1; }
.product-images img { width: 100%; border-radius: 8px; border: 1px solid #eee; }
.product-info { flex: 1; }
.product-info h1 { font-size: 28px; margin-bottom: 20px; color: #333; }
.product-content { line-height: 1.8; color: #444; font-size: 15px; }
.product-content img { max-width: 100%; }
.product-actions { margin-top: 30px; }

/* Page Content */
.page-content { line-height: 1.8; font-size: 15px; color: #444; }
.page-content img { max-width: 100%; }

/* Pagination */
.pagination { text-align: center; margin-top: 40px; }
.pagination a, .pagination span { display: inline-block; padding: 8px 14px; border: 1px solid #ddd; margin: 0 3px; color: #333; font-size: 14px; border-radius: 3px; transition: all 0.3s; }
.pagination a:hover { background: #0067a0; color: #fff; border-color: #0067a0; }
.pagination .current { background: #0067a0; color: #fff; border-color: #0067a0; }

/* Form & Table */
.form-container, .detail-container { background: #fff; padding: 30px; border-radius: 8px; border: 1px solid #eee; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 6px; font-weight: 500; font-size: 14px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 4px; font-size: 14px; }
.form-group input:focus, .form-group textarea:focus { border-color: #0067a0; outline: none; }
.captcha-row { display: flex; gap: 10px; align-items: center; }
.captcha-input { flex: 1; }
.captcha-img { height: 40px; cursor: pointer; }
.required { color: red; }
.table-container { background: #fff; border-radius: 8px; overflow: hidden; border: 1px solid #eee; }
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 12px 15px; text-align: left; border-bottom: 1px solid #eee; font-size: 14px; }
.data-table th { background: #f8f9fa; font-weight: 600; }
.data-table tr:hover { background: #f9f9f9; }
.btn-sm { padding: 4px 12px; font-size: 12px; }

/* Responsive */
@media (max-width: 992px) {
    .features-grid, .products-home .products-grid, .news-home .news-grid, .stats-grid, .footer-widgets { grid-template-columns: repeat(2, 1fr); }
    .news-section .news-item { flex-direction: column; }
    .news-section .news-image img { width: 100%; }
    .slider h1 { font-size: 36px; }
    .product-detail { flex-direction: column; }
    .header-right { gap: 15px; }
    .nav-list { gap: 15px; }
    .nav-list .menu-item a { font-size: 14px; }
}
@media (max-width: 768px) {
    .features-grid, .products-home .products-grid, .products-section .products-grid, .news-home .news-grid, .news-section .news-grid, .stats-grid, .footer-widgets { grid-template-columns: 1fr; }
    .header-inner { flex-direction: column; gap: 15px; }
    .header-right { flex-direction: column; width: 100%; }
    .nav-list { flex-wrap: wrap; justify-content: center; }
    .slider { padding: 60px 0; }
    .slider h1 { font-size: 28px; }
    .btn-secondary { margin-left: 0; margin-top: 10px; }
    .page-banner { padding: 50px 0; }
    .banner-content h1 { font-size: 26px; }
}