/* ===== 基础重置 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; color: #333; background: #f8f9fa; line-height: 1.6; }
a { text-decoration: none; color: #1a73e8; }
a:hover { color: #0d47a1; }
img { max-width: 100%; height: auto; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.text-center { text-align: center; }
.text-muted { color: #999; }

/* ===== 按钮 ===== */
.btn { display: inline-block; padding: 12px 28px; border: none; border-radius: 5px; font-size: 15px; font-weight: 600; cursor: pointer; transition: all 0.3s; text-align: center; }
.btn-primary { background: #1a73e8; color: #fff; }
.btn-primary:hover { background: #1557b0; color: #fff; }
.btn-secondary { background: #34a853; color: #fff; }
.btn-secondary:hover { background: #2d8e47; color: #fff; }
.btn-outline { background: transparent; color: #1a73e8; border: 2px solid #1a73e8; }
.btn-outline:hover { background: #1a73e8; color: #fff; }

/* ===== 顶部 ===== */
.site-header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.08); position: sticky; top: 0; z-index: 1000; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; flex-wrap: wrap; }
.logo img { height: 45px; width: auto; max-width: 200px; }
.main-nav ul { display: flex; gap: 30px; }
.main-nav ul li a { color: #333; font-weight: 500; padding: 8px 0; border-bottom: 3px solid transparent; transition: 0.3s; }
.main-nav ul li a:hover, .main-nav ul li a.active { color: #1a73e8; border-bottom-color: #1a73e8; }
.main-nav ul li a i { margin-right: 6px; }
.header-actions { display: flex; gap: 12px; }
.header-actions .btn { padding: 8px 20px; font-size: 14px; }
.header-qq { text-align: right; padding: 4px 0 8px; font-size: 14px; color: #666; border-top: 1px solid #f0f0f0; }
.header-qq i { color: #12b7f5; }
.mobile-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.mobile-toggle span { width: 28px; height: 3px; background: #333; border-radius: 2px; transition: 0.3s; }

/* ===== 首页横幅 ===== */
.hero { background: linear-gradient(135deg, #1a237e 0%, #0d47a1 50%, #01579b 100%); padding: 80px 0; color: #fff; text-align: center; }
.hero h1 { font-size: 48px; margin-bottom: 20px; }
.hero p { font-size: 18px; opacity: 0.9; margin-bottom: 30px; }
.hero-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== 特色模块 ===== */
.features { padding: 60px 0; background: #fff; }
.section-title { text-align: center; font-size: 32px; margin-bottom: 40px; color: #1a237e; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 30px; }
.feature-item { text-align: center; padding: 30px 20px; border-radius: 10px; transition: 0.3s; background: #f8f9fa; }
.feature-item:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
.feature-item i { font-size: 40px; color: #1a73e8; margin-bottom: 15px; }
.feature-item h3 { font-size: 18px; margin-bottom: 10px; }
.feature-item p { color: #666; font-size: 14px; }

/* ===== 新闻模块 ===== */
.news-section { padding: 60px 0; background: #f8f9fa; }
.news-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-bottom: 30px; }
.news-card { background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.06); transition: 0.3s; }
.news-card:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
.news-image { height: 180px; overflow: hidden; }
.news-image img { width: 100%; height: 100%; object-fit: cover; }
.news-body { padding: 20px; }
.news-body h3 { font-size: 18px; margin-bottom: 8px; }
.news-body h3 a { color: #333; }
.news-body h3 a:hover { color: #1a73e8; }
.news-body p { color: #666; font-size: 14px; margin-bottom: 10px; }
.news-date { font-size: 13px; color: #999; }

/* ===== 页面横幅 ===== */
.page-banner { background: linear-gradient(135deg, #1a237e 0%, #0d47a1 100%); padding: 60px 0; color: #fff; text-align: center; }
.page-banner h1 { font-size: 36px; margin-bottom: 10px; }
.page-banner p { opacity: 0.85; font-size: 16px; }

/* ===== 关于我们 ===== */
.about-content { padding: 60px 0; background: #fff; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.about-text h2 { font-size: 28px; color: #1a237e; margin-bottom: 20px; }
.about-text p { margin-bottom: 15px; color: #555; }
.about-image img { border-radius: 10px; width: 100%; }
.about-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 50px; text-align: center; }
.stat-item { padding: 30px; background: #f8f9fa; border-radius: 10px; }
.stat-number { font-size: 36px; font-weight: 700; color: #1a73e8; display: block; }
.stat-label { font-size: 14px; color: #666; }

/* ===== 下载页面 ===== */
.download-section { padding: 60px 0; background: #fff; }
.download-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.download-item { text-align: center; padding: 40px 20px; border-radius: 10px; border: 1px solid #e8e8e8; transition: 0.3s; }
.download-item:hover { border-color: #1a73e8; box-shadow: 0 8px 25px rgba(0,0,0,0.08); }
.download-item i { font-size: 50px; color: #1a73e8; margin-bottom: 15px; }
.download-item h3 { font-size: 20px; margin-bottom: 8px; }
.download-item p { color: #666; font-size: 14px; margin-bottom: 20px; }
.download-item .btn { margin: 5px; font-size: 13px; padding: 8px 18px; }

/* ===== 新闻列表 ===== */
.news-list { padding: 60px 0; background: #f8f9fa; }
.news-list-grid { display: grid; gap: 30px; }
.news-card-large { display: grid; grid-template-columns: 280px 1fr; gap: 20px; background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 10px rgba(0,0,0,0.06); }
.news-card-large .news-image { height: 200px; }
.news-card-large .news-body { padding: 20px; }
.news-card-large .news-body h3 { font-size: 20px; }
.news-meta { margin-top: 10px; font-size: 13px; color: #999; }
.news-meta span { margin-right: 20px; }

/* ===== 文章详情 ===== */
.article-detail { padding: 60px 0; background: #fff; }
.article-full { max-width: 800px; margin: 0 auto; }
.article-cover { margin-bottom: 30px; border-radius: 10px; overflow: hidden; }
.article-full h1 { font-size: 32px; color: #1a237e; margin-bottom: 15px; }
.article-meta { font-size: 14px; color: #999; margin-bottom: 25px; }
.article-meta span { margin-right: 20px; }
.article-content { font-size: 16px; color: #444; line-height: 1.8; word-wrap: break-word; word-break: break-word; overflow-wrap: break-word; max-width: 100%; }
.article-content img { max-width: 100%; border-radius: 8px; margin: 15px 0; }
.article-content h2, .article-content h3 { margin: 20px 0 10px; }
.related-articles { max-width: 800px; margin: 40px auto 0; padding-top: 30px; border-top: 1px solid #eee; }
.related-articles h3 { margin-bottom: 15px; }
.related-articles li { padding: 8px 0; border-bottom: 1px solid #f5f5f5; }

/* ===== 联系我们 ===== */
.contact-section { padding: 60px 0; background: #fff; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info p { padding: 10px 0; font-size: 16px; border-bottom: 1px solid #f0f0f0; }
.contact-info i { width: 30px; color: #1a73e8; }
.contact-hours { margin-top: 20px; padding: 20px; background: #f8f9fa; border-radius: 8px; }
.contact-hours h3 { margin-bottom: 5px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 5px; }
.form-group input, .form-group textarea, .form-group select { width: 100%; padding: 12px; border: 1px solid #ddd; border-radius: 5px; font-size: 15px; transition: 0.3s; }
.form-group input:focus, .form-group textarea:focus { border-color: #1a73e8; outline: none; box-shadow: 0 0 0 3px rgba(26,115,232,0.1); }

/* ===== 分页 ===== */
.pagination-wrap { text-align: center; margin-top: 30px; }
.pagination { display: inline-flex; gap: 5px; }
.pagination li { display: inline; }
.pagination li a { display: inline-block; padding: 8px 16px; border: 1px solid #ddd; border-radius: 5px; color: #333; background: #fff; }
.pagination li.active a { background: #1a73e8; color: #fff; border-color: #1a73e8; }
.pagination li a:hover { background: #f0f0f0; }

/* ===== 底部 ===== */
.site-footer { background: #fff; border-top: 1px solid #eee; padding: 50px 0 20px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 30px; }
.footer-col h4 { font-size: 18px; margin-bottom: 15px; color: #1a237e; }
.footer-col p { color: #666; font-size: 14px; line-height: 1.8; }
.footer-col ul li { padding: 5px 0; }
.footer-col ul li a { color: #666; font-size: 14px; }
.footer-col ul li a:hover { color: #1a73e8; }
.footer-bottom { border-top: 1px solid #eee; padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; font-size: 14px; color: #999; }
.footer-links a { margin-left: 20px; color: #999; }
.footer-links a:hover { color: #1a73e8; }

/* ===== 手机底部固定按钮 ===== */
.mobile-bottom-bar { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: #fff; padding: 10px 16px; box-shadow: 0 -2px 10px rgba(0,0,0,0.1); z-index: 999; gap: 10px; }
.mobile-bottom-bar .btn { flex: 1; text-align: center; padding: 10px; font-size: 14px; }

/* ===== 新增模块样式（首页等） ===== */
.section-intro { padding: 60px 0; background: #fff; }
.intro-content { max-width: 800px; margin: 0 auto; text-align: center; font-size: 16px; color: #555; line-height: 1.8; }
.intro-content p { margin-bottom: 15px; }
.section-regulation { padding: 60px 0; background: #f8f9fa; }
.regulation-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.regulation-item { text-align: center; padding: 30px 20px; background: #fff; border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); transition: 0.3s; }
.regulation-item:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
.regulation-item i { font-size: 40px; color: #1a73e8; margin-bottom: 15px; }
.regulation-item h3 { font-size: 18px; margin-bottom: 8px; }
.regulation-item p { color: #666; font-size: 14px; }
.section-software { padding: 60px 0; background: #fff; }
.software-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; }
.software-item { padding: 30px 20px; text-align: center; border: 1px solid #e8e8e8; border-radius: 10px; transition: 0.3s; }
.software-item:hover { border-color: #1a73e8; box-shadow: 0 8px 25px rgba(0,0,0,0.08); }
.software-item i { font-size: 45px; color: #1a73e8; margin-bottom: 15px; }
.software-item h3 { font-size: 20px; margin-bottom: 10px; }
.software-item p { color: #666; font-size: 14px; }
.section-honors { padding: 60px 0; background: #f8f9fa; }
.honors-grid { display: flex; justify-content: center; flex-wrap: wrap; gap: 40px; }
.honor-item { text-align: center; padding: 20px 30px; background: #fff; border-radius: 10px; min-width: 200px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.honor-item i { font-size: 36px; color: #f9a825; display: block; margin-bottom: 10px; }
.honor-item span { font-size: 16px; font-weight: 500; color: #333; }
.section-timeline { padding: 60px 0; background: #f8f9fa; }
.timeline { position: relative; max-width: 800px; margin: 0 auto; padding-left: 30px; }
.timeline::before { content: ''; position: absolute; left: 8px; top: 0; bottom: 0; width: 3px; background: #1a73e8; }
.timeline-item { position: relative; margin-bottom: 40px; padding-left: 30px; }
.timeline-item::before { content: ''; position: absolute; left: -22px; top: 6px; width: 16px; height: 16px; background: #1a73e8; border-radius: 50%; border: 3px solid #fff; box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
.timeline-year { font-size: 20px; font-weight: 700; color: #1a73e8; margin-bottom: 5px; }
.timeline-content h3 { font-size: 18px; margin-bottom: 5px; }
.timeline-content p { color: #666; font-size: 14px; }
.section-compliance { padding: 60px 0; background: #fff; }
.compliance-content { max-width: 800px; margin: 0 auto; }
.compliance-content p { font-size: 16px; color: #555; margin-bottom: 20px; }
.compliance-content ul { list-style: none; padding: 0; }
.compliance-content ul li { padding: 10px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px; color: #444; }
.compliance-content ul li strong { color: #1a237e; }
.section-csr { padding: 60px 0; background: #f8f9fa; }
.csr-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 30px; }
.csr-item { text-align: center; padding: 30px 20px; background: #fff; border-radius: 10px; box-shadow: 0 2px 10px rgba(0,0,0,0.05); }
.csr-item i { font-size: 40px; color: #1a73e8; margin-bottom: 15px; }
.csr-item h3 { font-size: 18px; margin-bottom: 8px; }
.csr-item p { color: #666; font-size: 14px; }
.section-features { padding: 60px 0; background: #fff; }
.section-features.mt5-features { background: #f8f9fa; }
.feature-list ul { max-width: 800px; margin: 0 auto; list-style: none; padding: 0; }
.feature-list ul li { padding: 12px 0; border-bottom: 1px solid #f0f0f0; font-size: 15px; color: #444; display: flex; align-items: flex-start; gap: 12px; }
.feature-list ul li i { color: #1a73e8; margin-top: 3px; font-size: 18px; }
.section-compare { padding: 60px 0; background: #fff; }
.compare-table-wrapper { max-width: 900px; margin: 0 auto; overflow-x: auto; }
.compare-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.compare-table th, .compare-table td { padding: 14px 18px; text-align: left; border: 1px solid #ddd; }
.compare-table thead { background: #1a237e; color: #fff; }
.compare-table tbody tr:nth-child(even) { background: #f8f9fa; }
.compare-table tbody tr:hover { background: #e8f0fe; }
.compare-table td:first-child { font-weight: 600; background: #f0f4fa; }

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .about-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .news-card-large { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .main-nav { display: none; }
    .main-nav.open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 20px; box-shadow: 0 8px 20px rgba(0,0,0,0.1); z-index: 999; }
    .main-nav.open ul { flex-direction: column; gap: 12px; }
    .header-actions { display: none; }
    .mobile-toggle { display: flex; }
    .hero h1 { font-size: 30px; }
    .section-title { font-size: 26px; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .download-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .mobile-bottom-bar { display: flex; }
    .site-footer { padding-bottom: 80px; }
    .page-banner { padding: 40px 0; }
    .page-banner h1 { font-size: 28px; }
    .honors-grid { gap: 20px; }
    .honor-item { min-width: 140px; padding: 15px 20px; }
    .compare-table { font-size: 12px; }
    .compare-table th, .compare-table td { padding: 8px 10px; }
    .timeline { padding-left: 20px; }
    .timeline-item { padding-left: 20px; }
    .timeline-item::before { left: -16px; width: 12px; height: 12px; }
}

@media (max-width: 480px) {
    .features-grid { grid-template-columns: 1fr; }
    .download-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr; }
    .hero h1 { font-size: 24px; }
    .hero { padding: 50px 0; }
}