/* ═══════════════════════ 基础 ═══════════════════════ */
* { margin:0; padding:0; box-sizing:border-box }
body { font-family:'PingFang SC','Microsoft YaHei',Helvetica,Arial,sans-serif; color:#333; line-height:1.7; background:#fff }
a { color:#333; text-decoration:none }
img { max-width:100% }
.container { max-width:1200px; margin:0 auto; padding:0 20px }
.section { padding:70px 0 }
.btn-primary { display:inline-block; padding:12px 32px; background:#1890ff; color:#fff; border-radius:6px; transition:all .3s; cursor:pointer; border:none; font-size:15px; font-weight:500 }
.btn-primary:hover { background:#40a9ff; transform:translateY(-1px); box-shadow:0 4px 12px rgba(24,144,255,.3) }
.btn-primary-white { display:inline-block; padding:12px 32px; background:#fff; color:#1890ff; border-radius:6px; transition:all .3s; cursor:pointer; border:none; font-size:15px; font-weight:500 }
.btn-primary-white:hover { background:#f0f5ff }
.btn-outline { display:inline-block; padding:12px 28px; border:2px solid #1890ff; color:#1890ff; border-radius:6px; transition:all .3s; font-size:15px; font-weight:500 }
.btn-outline:hover { background:#1890ff; color:#fff }
.no-data { text-align:center; color:#999; padding:40px }

/* ═══════════════════════ 顶部栏 ═══════════════════════ */
.topbar { background:#0d1b3e; color:#fff; padding:8px 0; font-size:13px }
.topbar .container { display:flex; justify-content:space-between; align-items:center }
.topbar .tel strong { font-size:16px; color:#ffd700 }

/* ═══════════════════════ 导航 ═══════════════════════ */
.header { background:#fff; box-shadow:0 2px 12px rgba(0,0,0,.08); position:sticky; top:0; z-index:100 }
.header-inner { display:flex; align-items:center; justify-content:space-between; height:72px }
.logo { display:flex; align-items:center; gap:10px; font-weight:700; font-size:20px; color:#1890ff }
.logo img { height:40px }
.nav { display:flex; gap:4px; align-items:center }
.nav a { padding:8px 18px; border-radius:6px; font-size:15px; color:#555; transition:all .2s; white-space:nowrap }
.nav a:hover { color:#1890ff; background:#f0f5ff }
.nav a.active { color:#1890ff; background:#e6f7ff; font-weight:500 }
.nav .login-btn { background:#1890ff; color:#fff !important; padding:8px 20px; border-radius:20px }
.nav .login-btn:hover { background:#40a9ff }
.nav .user-center-btn { background:#52c41a; color:#fff !important; padding:8px 20px; border-radius:20px }
.nav .user-center-btn:hover { background:#73d13d }
.nav-toggle { display:none; background:none; border:none; font-size:24px; cursor:pointer }

/* ═══════════════════════ Banner ═══════════════════════ */
.banner { position:relative; height:520px; overflow:hidden }
.banner-slider { height:100% }
.banner-item { height:520px; display:flex; align-items:center; justify-content:center; cursor:pointer; transition:opacity .6s; position:absolute; inset:0; opacity:0 }
.banner-item.active { opacity:1; position:relative }
.banner-content { text-align:center; color:#fff; max-width:800px; padding:0 20px }
.banner-content h2 { font-size:48px; font-weight:700; margin-bottom:20px; text-shadow:0 2px 12px rgba(0,0,0,.3); letter-spacing:2px }
.banner-content p { font-size:22px; margin-bottom:30px; opacity:.95; text-shadow:0 1px 6px rgba(0,0,0,.2) }
.banner-btn { display:inline-block; padding:14px 40px; background:#fff; color:#1890ff; border-radius:30px; font-weight:600; font-size:16px; transition:all .3s; letter-spacing:1px }
.banner-btn:hover { transform:translateY(-3px); box-shadow:0 6px 20px rgba(0,0,0,.25) }
.banner-dots { position:absolute; bottom:24px; left:50%; transform:translateX(-50%); display:flex; gap:8px }
.dot { width:10px; height:10px; border-radius:50%; background:rgba(255,255,255,.5); cursor:pointer; transition:all .2s }
.dot.active { background:#fff; width:30px; border-radius:5px }

/* ═══════════════════════ 数据统计条 ═══════════════════════ */
.stats-bar { background:linear-gradient(135deg,#0d1b3e 0%,#1a3a6e 100%); padding:40px 0; color:#fff }
.stats-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center }
.stat-num { font-size:48px; font-weight:700; color:#ffd700; line-height:1.2 }
.stat-num span { font-size:20px; color:#ffd700 }
.stat-label { font-size:14px; color:rgba(255,255,255,.8); margin-top:8px }

/* ═══════════════════════ 页面标题区 ═══════════════════════ */
.page-banner { padding:80px 0; background:linear-gradient(135deg,#0d1b3e 0%,#1a3a6e 100%); color:#fff; text-align:center }
.page-banner h1 { font-size:40px; margin-bottom:12px }
.page-banner p { font-size:18px; opacity:.9 }
.breadcrumb { background:#fafafa; padding:12px 0; font-size:13px; color:#999 }
.breadcrumb a { color:#666 }
.breadcrumb a:hover { color:#1890ff }

/* ═══════════════════════ 区块标题 ═══════════════════════ */
.section-title { text-align:center; margin-bottom:50px }
.section-title h2 { font-size:32px; font-weight:700; color:#333; margin-bottom:12px; position:relative; display:inline-block }
.section-title h2::after { content:''; position:absolute; bottom:-8px; left:50%; transform:translateX(-50%); width:60px; height:3px; background:#1890ff; border-radius:2px }
.section-title p { font-size:16px; color:#999; margin-top:16px }

/* ═══════════════════════ 服务卡片 ═══════════════════════ */
.services-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:28px }
.service-card { background:#fff; border-radius:12px; padding:36px 28px; text-align:center; box-shadow:0 4px 16px rgba(0,0,0,.06); transition:all .3s; border:1px solid #f0f0f0; position:relative; overflow:hidden }
.service-card::before { content:''; position:absolute; top:0; left:0; right:0; height:4px; background:#1890ff; transform:scaleX(0); transition:transform .3s }
.service-card:hover { transform:translateY(-6px); box-shadow:0 12px 32px rgba(0,0,0,.12); border-color:#1890ff }
.service-card:hover::before { transform:scaleX(1) }
.service-icon { font-size:52px; margin-bottom:20px }
.service-card h3 { font-size:20px; margin-bottom:12px; color:#333; font-weight:600 }
.service-card p { font-size:14px; color:#666; line-height:1.8 }

/* ═══════════════════════ 关于我们 ═══════════════════════ */
.about-grid { display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center }
.about-text p { font-size:15px; color:#666; margin-bottom:24px; line-height:2 }
.about-stats-inline { display:flex; gap:40px; margin:24px 0; }
.about-stats-inline .stat-item { text-align:center; padding:16px 24px; background:linear-gradient(135deg,#f0f5ff 0%,#e6f7ff 100%); border-radius:12px }
.about-stats-inline .stat-item strong { display:block; font-size:32px; color:#1890ff; font-weight:700 }
.about-stats-inline .stat-item span { font-size:13px; color:#666 }
.about-img { background:linear-gradient(135deg,#e6f7ff,#f0f5ff); border-radius:16px; height:320px; overflow:hidden; display:flex; align-items:center; justify-content:center; color:#1890ff; font-size:80px }
.about-full h2 { font-size:22px; margin:30px 0 16px; padding-bottom:10px; border-bottom:2px solid #1890ff; display:inline-block }
.about-full p { color:#666; margin-bottom:16px; line-height:2 }
.advantages-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:20px; margin:20px 0 }
.advantage-item { background:#f8f9fa; padding:20px; border-radius:10px }
.adv-icon { font-size:32px; margin-bottom:10px }
.advantage-item h3 { font-size:16px; margin-bottom:8px }
.advantage-item p { font-size:14px; color:#666 }
.service-list { list-style:none; margin:16px 0 }
.service-list li { padding:10px 0; border-bottom:1px solid #f0f0f0; font-size:14px }
.contact-list { list-style:none; margin:16px 0 }
.contact-list li { padding:8px 0; font-size:14px }

/* ═══════════════════════ 产品 ═══════════════════════ */
.products-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:24px }
.product-card { background:#fff; border-radius:12px; overflow:hidden; box-shadow:0 4px 16px rgba(0,0,0,.06); transition:all .3s; border:1px solid #f0f0f0; display:block }
.product-card:hover { transform:translateY(-6px); box-shadow:0 12px 32px rgba(0,0,0,.12); border-color:#1890ff }
.product-thumb { height:180px; overflow:hidden; background:#f5f5f5; display:flex; align-items:center; justify-content:center }
.product-thumb img { width:100%; height:100%; object-fit:cover; transition:transform .3s }
.product-card:hover .product-thumb img { transform:scale(1.05) }
.product-info { padding:18px }
.product-info h3 { font-size:16px; font-weight:600; margin-bottom:8px; color:#333 }
.product-info p { font-size:13px; color:#999; line-height:1.6; margin-bottom:10px }
.product-more { font-size:13px; color:#1890ff; font-weight:500 }

/* ═══════════════════════ 案例 ═══════════════════════ */
.cases-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px }
.case-card { background:#fff; border-radius:12px; overflow:hidden; box-shadow:0 4px 16px rgba(0,0,0,.06); transition:all .3s }
.case-card:hover { transform:translateY(-6px); box-shadow:0 12px 32px rgba(0,0,0,.12) }
.case-thumb { height:200px; overflow:hidden; background:#f0f0f0; display:flex; align-items:center; justify-content:center; color:#ccc; font-size:50px }
.case-thumb img { width:100%; height:100%; object-fit:cover; transition:transform .3s }
.case-card:hover .case-thumb img { transform:scale(1.05) }
.case-info { padding:18px }
.case-info h3 { font-size:16px; font-weight:600; margin-bottom:6px }
.case-info p { font-size:13px; color:#999 }
.case-link { color:#1890ff; font-size:14px }
.cases-full-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:24px }
.case-full-card { background:#fff; border-radius:12px; overflow:hidden; box-shadow:0 4px 16px rgba(0,0,0,.06); display:flex; transition:all .3s }
.case-full-card:hover { box-shadow:0 12px 32px rgba(0,0,0,.12) }
.case-full-thumb { width:260px; flex-shrink:0; overflow:hidden }
.case-full-thumb img { width:100%; height:100%; object-fit:cover }
.case-full-info { padding:24px; flex:1 }
.case-full-info h3 { font-size:18px; margin-bottom:10px }
.case-client { color:#1890ff; font-size:13px; margin-bottom:8px }
.case-full-info p { color:#666; font-size:14px; line-height:1.8 }

/* ═══════════════════════ 新闻 ═══════════════════════ */
.news-list { max-width:800px; margin:0 auto }
.news-item { display:flex; gap:24px; padding:24px 0; border-bottom:1px solid #f0f0f0; transition:all .2s }
.news-item:hover { background:#fafafa; margin:0 -20px; padding:24px; border-radius:8px }
.news-date { text-align:center; flex-shrink:0; width:70px; padding:8px 0; background:#f0f5ff; border-radius:8px }
.news-date .day { display:block; font-size:30px; font-weight:700; color:#1890ff; line-height:1 }
.news-date .month { font-size:12px; color:#999 }
.news-content h3 { font-size:17px; margin-bottom:10px }
.news-content h3 a { color:#333 }
.news-content h3 a:hover { color:#1890ff }
.news-content p { font-size:14px; color:#999; line-height:1.6 }
.news-grid { display:grid; grid-template-columns:repeat(2,1fr); gap:24px }
.news-card { background:#fff; border-radius:12px; overflow:hidden; box-shadow:0 4px 16px rgba(0,0,0,.06); transition:all .3s }
.news-card:hover { box-shadow:0 12px 32px rgba(0,0,0,.12) }
.news-thumb { height:180px; overflow:hidden; background:#f0f0f0 }
.news-thumb img { width:100%; height:100%; object-fit:cover }
.news-text { padding:20px }
.news-cat { font-size:12px; color:#1890ff; background:#e6f7ff; padding:3px 10px; border-radius:10px }
.news-text h3 { font-size:16px; margin:10px 0; }
.news-text h3 a { color:#333 }
.news-text h3 a:hover { color:#1890ff }
.news-text p { font-size:14px; color:#999; line-height:1.6; margin-bottom:10px }
.news-meta { display:flex; gap:12px; font-size:12px; color:#999 }
.news-page-layout { display:grid; grid-template-columns:1fr 280px; gap:24px }
.news-sidebar { }
.sidebar-box { background:#fff; border-radius:12px; padding:24px; box-shadow:0 4px 16px rgba(0,0,0,.06) }
.sidebar-box h3 { font-size:16px; padding-bottom:12px; border-bottom:2px solid #1890ff; margin-bottom:14px }
.sidebar-contact { list-style:none; margin-bottom:16px }
.sidebar-contact li { padding:6px 0; font-size:14px; color:#666 }
.sidebar-news-item { padding:10px 0; border-bottom:1px solid #f0f0f0; font-size:13px }
.sidebar-news-item a { color:#555; display:block }
.sidebar-news-item a:hover { color:#1890ff }
.sidebar-news-item span { font-size:12px; color:#999 }

/* ═══════════════════════ 文章详情 ═══════════════════════ */
.article-layout { display:grid; grid-template-columns:1fr 280px; gap:24px }
.article-main { background:#fff; border-radius:12px; padding:36px; box-shadow:0 4px 16px rgba(0,0,0,.06) }
.article-title { font-size:26px; font-weight:700; margin-bottom:16px; line-height:1.5 }
.article-meta { display:flex; gap:20px; font-size:13px; color:#999; margin-bottom:20px; padding-bottom:16px; border-bottom:1px solid #f0f0f0 }
.article-thumb { width:100%; border-radius:8px; margin-bottom:20px }
.article-content { font-size:15px; line-height:2; color:#333 }
.article-content p { margin-bottom:16px }
.article-content img { max-width:100%; border-radius:8px; margin:16px 0 }
.article-content h2 { font-size:20px; margin:24px 0 12px; }
.article-content h3 { font-size:17px; margin:20px 0 10px; }
.article-sidebar { }
.article-sidebar .sidebar-box { margin-bottom:20px }
.article-sidebar .sidebar-news-item:last-child { border-bottom:none }

/* ═══════════════════════ 产品详情 ═══════════════════════ */
.product-detail-layout { display:grid; grid-template-columns:400px 1fr; gap:40px; margin-bottom:40px }
.product-detail-img { border-radius:12px; overflow:hidden; background:#f5f5f5; height:320px; display:flex; align-items:center; justify-content:center }
.product-detail-img img { width:100%; height:100%; object-fit:cover }
.product-detail-cat { font-size:12px; color:#1890ff; background:#e6f7ff; padding:4px 14px; border-radius:12px; display:inline-block; margin-bottom:12px }
.product-detail-info h1 { font-size:28px; margin-bottom:12px }
.product-detail-subtitle { font-size:16px; color:#999; margin-bottom:20px }
.product-detail-desc { font-size:15px; color:#666; line-height:2; margin-bottom:24px }
.product-detail-cta { display:flex; gap:12px }
.product-full-content { background:#fff; border-radius:12px; padding:36px; box-shadow:0 4px 16px rgba(0,0,0,.06) }
.product-full-content h2 { font-size:20px; margin-bottom:16px; padding-bottom:10px; border-bottom:2px solid #1890ff; display:inline-block }
.product-full-content p { margin-bottom:16px; line-height:2 }

/* ═══════════════════════ 联系 ═══════════════════════ */
.contact-layout { display:grid; grid-template-columns:1fr 1fr; gap:40px }
.contact-info h2 { font-size:24px; margin-bottom:24px }
.contact-item { display:flex; gap:16px; margin-bottom:24px }
.ci-icon { font-size:28px; width:40px; flex-shrink:0 }
.contact-item strong { display:block; font-size:14px; margin-bottom:4px }
.contact-item p { font-size:14px; color:#666 }
.contact-form-wrap h2 { font-size:24px; margin-bottom:24px }
.contact-form { }
.form-row { display:flex; gap:16px }
.form-group { flex:1; margin-bottom:16px }
.form-group label { display:block; margin-bottom:6px; font-size:14px; color:#555; font-weight:500 }
.form-group input, .form-group textarea, .form-group select { width:100%; padding:12px 16px; border:1px solid #d9d9d9; border-radius:8px; font-size:14px; outline:none; transition:border-color .2s; background:#fff }
.form-group input:focus, .form-group textarea:focus, .form-group select:focus { border-color:#1890ff; box-shadow:0 0 0 2px rgba(24,144,255,.1) }
.form-group textarea { resize:vertical }
.form-msg { padding:12px 16px; border-radius:8px; margin-bottom:16px; font-size:14px }
.form-msg.ok { background:#f6ffed; color:#52c41a; border:1px solid #b7eb8f }
.form-msg.err { background:#fff1f0; color:#f5222d; border:1px solid #ffccc7 }

/* ═══════════════════════ 咨询条 ═══════════════════════ */
.contact-bar { background:linear-gradient(135deg,#0d1b3e 0%,#1a3a6e 100%); padding:50px 0; color:#fff }
.contact-bar-inner { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:24px }
.contact-bar-inner h2 { font-size:26px; margin:0 }
.contact-bar-tel { font-size:32px; font-weight:700; color:#ffd700 }

/* ═══════════════════════ 分页 ═══════════════════════ */
.pagination { display:flex; justify-content:center; align-items:center; gap:6px; margin-top:30px; flex-wrap:wrap }
.pagination a { padding:8px 16px; border:1px solid #d9d9d9; border-radius:6px; color:#666; font-size:13px; transition:all .2s }
.pagination a:hover { border-color:#1890ff; color:#1890ff }
.pagination .cur { padding:8px 16px; background:#1890ff; color:#fff; border-radius:6px }
.pagination span { color:#999 }

/* ═══════════════════════ 筛选栏 ═══════════════════════ */
.filter-bar { margin-bottom:24px; display:flex; gap:8px; flex-wrap:wrap; align-items:center }
.filter-btn { padding:8px 20px; border:1px solid #d9d9d9; border-radius:20px; font-size:13px; color:#666; cursor:pointer; transition:all .2s; text-decoration:none }
.filter-btn:hover, .filter-btn.active { background:#1890ff; color:#fff; border-color:#1890ff }

/* ═══════════════════════ 底部 ═══════════════════════ */
.footer { background:#0d1b3e; color:#b0b8c8; margin-top:0 }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; padding:60px 0 }
.footer h4 { color:#fff; font-size:16px; margin-bottom:20px; position:relative; padding-bottom:12px }
.footer h4::after { content:''; position:absolute; bottom:0; left:0; width:30px; height:2px; background:#1890ff }
.footer p { font-size:14px; line-height:2; color:#8a96a8 }
.footer ul { list-style:none }
.footer li { padding:5px 0 }
.footer li a { color:#8a96a8; font-size:14px; transition:color .2s }
.footer li a:hover { color:#fff }
.footer-bottom { background:#091230; padding:20px 0; text-align:center; font-size:13px; color:#5a6578; border-top:1px solid rgba(255,255,255,.05) }
.footer-bottom a { color:#5a6578 }
.footer-bottom a:hover { color:#fff }
.footer-tel { font-size:28px; font-weight:700; color:#ffd700; margin:8px 0 }
.footer-wechat { display:inline-flex; align-items:center; gap:8px; background:rgba(255,255,255,.05); padding:8px 16px; border-radius:8px; margin-top:8px; font-size:13px; color:#8a96a8 }

/* ═══════════════════════ 响应式 ═══════════════════════ */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns:repeat(3,1fr) }
  .footer-grid { grid-template-columns:repeat(2,1fr) }
  .stats-grid { grid-template-columns:repeat(2,1fr); gap:30px }
}
@media (max-width: 768px) {
  .nav { display:none; position:absolute; top:72px; left:0; right:0; background:#fff; flex-direction:column; padding:10px; box-shadow:0 4px 12px rgba(0,0,0,.1); border-top:1px solid #f0f0f0 }
  .nav.open { display:flex }
  .nav-toggle { display:block }
  .services-grid { grid-template-columns:repeat(2,1fr) }
  .about-grid { grid-template-columns:1fr }
  .products-grid { grid-template-columns:repeat(2,1fr) }
  .cases-grid { grid-template-columns:repeat(2,1fr) }
  .cases-full-grid { grid-template-columns:1fr }
  .case-full-card { flex-direction:column }
  .case-full-thumb { width:100%; height:200px }
  .news-grid { grid-template-columns:1fr }
  .news-page-layout { grid-template-columns:1fr }
  .article-layout { grid-template-columns:1fr }
  .product-detail-layout { grid-template-columns:1fr }
  .contact-layout { grid-template-columns:1fr }
  .footer-grid { grid-template-columns:1fr }
  .contact-bar-inner { flex-direction:column; text-align:center }
  .advantages-grid { grid-template-columns:1fr }
  .banner-content h2 { font-size:30px }
  .banner-content p { font-size:16px }
  .banner { height:360px }
  .banner-item { height:360px }
  .stat-num { font-size:36px }
  .stats-grid { grid-template-columns:repeat(2,1fr) }
}
@media (max-width: 480px) {
  .services-grid { grid-template-columns:1fr }
  .products-grid { grid-template-columns:1fr }
  .cases-grid { grid-template-columns:1fr }
  .about-stats-inline { gap:16px; flex-wrap:wrap }
  .form-row { flex-direction:column }
  .stats-grid { grid-template-columns:1fr 1fr }
  .stat-num { font-size:28px }
}