/* ===== 全局样式 ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --primary: #003087;
  --secondary: #0056b3;
  --accent: #e8a020;
  --dark: #1a1a2e;
  --light: #f5f7fa;
  --text: #333;
  --text-light: #666;
  --white: #fff;
}
body { font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif; color: var(--text); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 32px; color: var(--primary); margin-bottom: 12px; }
.section-title p { color: var(--text-light); font-size: 15px; }
.section-title .line { width: 60px; height: 3px; background: var(--accent); margin: 12px auto 0; }
.btn { display: inline-block; padding: 12px 32px; border-radius: 3px; font-size: 15px; cursor: pointer; transition: all .3s; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--secondary); }
.btn-outline { border: 2px solid #fff; color: #fff; }
.btn-outline:hover { background: #fff; color: var(--primary); }

/* ===== 顶部信息栏 ===== */
.top-bar { background: var(--dark); color: #aaa; font-size: 13px; padding: 6px 0; }
.top-bar .container { display: flex; justify-content: space-between; align-items: center; }
.top-bar a { color: #aaa; }
.top-bar a:hover { color: var(--accent); }

/* ===== 导航 ===== */
header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,.1); position: sticky; top: 0; z-index: 1000; }
.navbar { display: flex; align-items: center; justify-content: space-between; height: 75px; }
.logo { display: flex; align-items: center; gap: 12px; white-space: nowrap; }
.logo-icon { width: 50px; height: 50px; flex-shrink: 0; background: var(--primary) url('../images/logo.png') center/90% no-repeat; border-radius: 6px; color: transparent; font-size: 0; overflow: hidden; }
.logo-text h1 { font-size: 18px; color: var(--primary); line-height: 1.2; }
.logo-text span { font-size: 12px; color: var(--text-light); }
nav ul { display: flex; gap: 0; }
nav ul li { position: relative; }
nav ul li > a { display: block; padding: 0 18px; height: 75px; line-height: 75px; font-size: 15px; color: var(--text); transition: all .3s; white-space: nowrap; }
nav ul li > a:hover, nav ul li.active > a { color: var(--primary); border-bottom: 3px solid var(--primary); }
.dropdown { position: absolute; top: 75px; left: 0; background: #fff; min-width: 180px; box-shadow: 0 5px 20px rgba(0,0,0,.15); opacity: 0; visibility: hidden; transition: all .3s; z-index: 999; }
nav ul li:hover .dropdown { opacity: 1; visibility: visible; }
.dropdown li a { display: block; padding: 12px 20px; font-size: 14px; color: var(--text); border-bottom: 1px solid #f0f0f0; transition: all .3s; height: auto; line-height: 1.5; }
.dropdown li a:hover { background: var(--primary); color: #fff; padding-left: 28px; }
.nav-contact { background: var(--primary); color: #fff; padding: 10px 20px; border-radius: 3px; font-size: 14px; white-space: nowrap; }
.nav-contact:hover { background: var(--secondary); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; }
.hamburger span { width: 25px; height: 2px; background: var(--primary); transition: all .3s; }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero 轮播 ===== */
.hero { position: relative; height: calc(100vh - 230px); min-height: 360px; overflow: hidden; margin-bottom: 0; }
.hero-slide { position: absolute; inset: 0; opacity: 0; transition: opacity .8s; pointer-events: none; }
.hero-slide.active { opacity: 1; pointer-events: all; }
.hero-slide .bg { width: 100%; height: 100%; object-fit: cover; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(0,48,135,.45) 0%, rgba(0,86,179,.2) 100%); }
.hero-content { position: absolute; inset: 0; display: flex; align-items: center; }
.hero-content .container { color: #fff; }
.hero-content h2 { font-size: 48px; font-weight: 700; line-height: 1.2; margin-bottom: 16px; text-shadow: 0 2px 12px rgba(0,0,0,.6); }
.hero-content p { font-size: 18px; margin-bottom: 32px; opacity: 1; max-width: 600px; text-shadow: 0 1px 6px rgba(0,0,0,.5); }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-dots { position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; }
.hero-dots span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.5); cursor: pointer; transition: all .3s; }
.hero-dots span.active { background: #fff; width: 28px; border-radius: 5px; }
.hero-arrows { position: absolute; top: 50%; transform: translateY(-50%); width: 100%; display: flex; justify-content: space-between; padding: 0 20px; pointer-events: none; }
.hero-arrows button { pointer-events: all; width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.2); border: 2px solid rgba(255,255,255,.5); color: #fff; font-size: 18px; cursor: pointer; transition: all .3s; }
.hero-arrows button:hover { background: var(--primary); border-color: var(--primary); }

/* ===== 数据统计 ===== */
.stats { background: var(--primary); padding: 10px 0; }
.stat-num { font-size: 48px; font-weight: 700; color: var(--accent); line-height: 1; }
.stat-num span { font-size: 24px; }
.stat-label { font-size: 14px; margin-top: 8px; opacity: .85; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.stat-item { text-align: center; color: #fff; padding: 20px; border-right: 1px solid rgba(255,255,255,.2); }
.stat-item:last-child { border-right: none; }
.stat-num { font-size: 48px; font-weight: 700; color: var(--accent); line-height: 1; }
.stat-num span { font-size: 24px; }
.stat-label { font-size: 14px; margin-top: 8px; opacity: .85; }

/* ===== 关于我们首页块 ===== */
.about-home { padding: 80px 0; background: #fff; }
.about-home .container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.about-img { position: relative; }
.about-img img { border-radius: 4px; width: 100%; height: 400px; object-fit: cover; }
.about-badge { position: absolute; bottom: -20px; right: -20px; background: var(--primary); color: #fff; padding: 20px 24px; text-align: center; border-radius: 4px; }
.about-badge .num { font-size: 36px; font-weight: 700; color: var(--accent); }
.about-badge .txt { font-size: 13px; }
.about-text h2 { font-size: 30px; color: var(--primary); margin-bottom: 16px; }
.about-text .sub { color: var(--accent); font-size: 14px; margin-bottom: 20px; letter-spacing: 2px; }
.about-text p { color: var(--text-light); line-height: 1.9; margin-bottom: 16px; }
.about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin: 24px 0; }
.about-tags span { background: var(--light); color: var(--primary); padding: 6px 16px; border-radius: 20px; font-size: 13px; border: 1px solid #dde; }

/* ===== 产品中心首页块 ===== */
.products-home { padding: 80px 0; background: var(--light); }
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card { background: #fff; border-radius: 4px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: all .3s; }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 10px 30px rgba(0,48,135,.15); }
.product-card .img-wrap { height: 240px; overflow: hidden; position: relative; background: linear-gradient(135deg, var(--primary), var(--secondary)); display: flex; align-items: center; justify-content: center; }
.product-card .img-wrap .icon { font-size: 60px; opacity: .3; color: #fff; }
.product-card .img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.product-card .card-body { padding: 20px; }
.product-card h3 { font-size: 17px; color: var(--primary); margin-bottom: 8px; }
.product-card h3 a { color: var(--primary); }
.product-card h3 a:hover { color: var(--secondary); }
.product-card .img-wrap a { display: block; }
.product-card p { font-size: 13px; color: var(--text-light); line-height: 1.7; }
.product-card .card-footer { padding: 12px 20px; border-top: 1px solid #f0f0f0; display: flex; justify-content: space-between; align-items: center; }
.product-card .card-footer a { color: var(--primary); font-size: 13px; }
.product-card .card-footer a:hover { color: var(--accent); }

/* ===== 案例展示首页块 ===== */
.cases-home { padding: 80px 0; background: #fff; }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card { position: relative; overflow: hidden; border-radius: 4px; height: 240px; }
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-card:hover img { transform: scale(1.08); }
.case-overlay { position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,48,135,.85) 0%, transparent 60%); display: flex; flex-direction: column; justify-content: flex-end; padding: 20px; color: #fff; }
.case-overlay h3 { font-size: 16px; margin-bottom: 4px; }
.case-overlay p { font-size: 12px; opacity: .8; }

/* ===== 新闻首页块 ===== */
.news-home { padding: 80px 0; background: var(--light); }
.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.news-main { display: block; background: #fff; border-radius: 4px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,.06); text-decoration: none; color: inherit; transition: all .3s; }
.news-main:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,48,135,.1); }
.news-main img { width: 100%; height: 260px; object-fit: cover; }
.news-main .news-body { padding: 24px; }
.news-main .news-body .tag { background: var(--primary); color: #fff; font-size: 12px; padding: 3px 10px; border-radius: 2px; display: inline-block; margin-bottom: 10px; }
.news-main .news-body h3 { font-size: 18px; color: var(--text); margin-bottom: 10px; }
.news-main .news-body p { font-size: 14px; color: var(--text-light); }
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item { background: #fff; border-radius: 4px; padding: 18px; display: flex; gap: 16px; box-shadow: 0 2px 8px rgba(0,0,0,.05); transition: all .3s; text-decoration: none; color: inherit; }
.news-item:hover { box-shadow: 0 5px 20px rgba(0,48,135,.12); }
.news-date { min-width: 56px; text-align: center; background: var(--primary); color: #fff; border-radius: 3px; padding: 8px 4px; }
.news-date .day { font-size: 22px; font-weight: 700; line-height: 1; }
.news-date .month { font-size: 11px; opacity: .8; }
.news-info h4 { font-size: 15px; color: var(--text); margin-bottom: 6px; line-height: 1.4; }
.news-info p { font-size: 13px; color: var(--text-light); }

/* ===== 合作品牌 ===== */
.brands { padding: 60px 0; background: #fff; border-top: 1px solid #eee; }
.brands-track { display: flex; gap: 30px; align-items: stretch; flex-wrap: wrap; justify-content: center; }
.brand-item { display: flex; flex-direction: column; align-items: center; border-radius: 6px; overflow: hidden; width: 160px; transition: all .3s; cursor: default; box-shadow: 0 4px 16px rgba(0,0,0,.10); background: #fff; }
.brand-item:hover { box-shadow: 0 8px 24px rgba(0,0,0,.18); transform: translateY(-3px); }
.brand-item .brand-logo { width: 100%; height: 100px; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,.9); font-size: 28px; font-weight: 700; }
.brand-item span { padding: 8px 6px; font-size: 13px; color: var(--text); font-weight: 600; text-align: center; width: 100%; }
.brand-img { width: 160px; height: 160px; object-fit: contain; padding: 10px; }

/* ===== Footer ===== */
footer { background: var(--dark); color: #aaa; }
.footer-main { padding: 60px 0; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr auto; gap: 40px; }
.footer-qr h4 { color: #fff; font-size: 16px; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); display: inline-block; }
.footer-qr img { width: 110px; height: 110px; object-fit: cover; border-radius: 4px; display: block; }
.footer-brand .logo-text h1 { color: #fff; font-size: 20px; }
.footer-brand .logo-text span { color: #888; }
.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.8; color: #888; }
.footer-brand .contact-info { margin-top: 20px; }
.footer-brand .contact-info p { color: #aaa; font-size: 13px; margin-bottom: 6px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); display: inline-block; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: #888; font-size: 14px; transition: color .3s; }
.footer-col ul li a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid #2a2a3e; padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: #666; }
.footer-bottom a { color: #666; }
.footer-bottom a:hover { color: var(--accent); }

/* ===== 页面 Banner ===== */
.page-banner { height: 280px; background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%); display: flex; align-items: center; position: relative; overflow: hidden; }
.page-banner::before { content: ''; position: absolute; right: -100px; top: -100px; width: 400px; height: 400px; border-radius: 50%; background: rgba(255,255,255,.05); }
.page-banner .container { color: #fff; position: relative; z-index: 1; }
.page-banner h1 { font-size: 38px; margin-bottom: 10px; }
.page-banner .breadcrumb { font-size: 14px; opacity: .8; }
.page-banner .breadcrumb a { color: rgba(255,255,255,.7); }
.page-banner .breadcrumb a:hover { color: #fff; }
.page-banner .breadcrumb span { margin: 0 8px; }

/* ===== 关于页面 ===== */
.about-section { padding: 80px 0; }
.about-section.bg-light { background: var(--light); }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.intro-grid img { width: 100%; height: 380px; object-fit: cover; border-radius: 4px; }
.intro-content h2 { font-size: 28px; color: var(--primary); margin-bottom: 20px; }
.intro-content p { color: var(--text-light); line-height: 1.9; margin-bottom: 14px; font-size: 15px; }
.highlight-box { background: var(--primary); color: #fff; padding: 20px 24px; border-radius: 4px; margin-top: 20px; }
.highlight-box p { color: rgba(255,255,255,.9); margin: 0; }
.biz-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.biz-card { background: #fff; padding: 30px 20px; text-align: center; border-radius: 4px; box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: all .3s; }
.biz-card:hover { transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,48,135,.12); }
.biz-card .icon { font-size: 40px; margin-bottom: 14px; }
.biz-card h3 { font-size: 16px; color: var(--primary); margin-bottom: 8px; }
.biz-card p { font-size: 13px; color: var(--text-light); }
.honor-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.honor-item { background: #fff; border-radius: 4px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,.06); text-align: center; padding: 20px; }
.honor-item img { width: 100%; height: 160px; object-fit: cover; border-radius: 3px; margin-bottom: 12px; }
.honor-item p { font-size: 13px; color: var(--text-light); }
.concept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.concept-card { background: #fff; padding: 36px 28px; border-radius: 4px; box-shadow: 0 2px 12px rgba(0,0,0,.06); border-top: 4px solid var(--primary); }
.concept-card h3 { font-size: 18px; color: var(--primary); margin-bottom: 14px; }
.concept-card p { font-size: 14px; color: var(--text-light); line-height: 1.8; }

/* ===== 产品页面 ===== */
.products-section { padding: 80px 0; }
.products-section.bg-light { background: var(--light); }
.product-tabs { display: flex; gap: 0; border-bottom: 2px solid #e0e0e0; margin-bottom: 40px; flex-wrap: wrap; }
.product-tabs .tab { padding: 12px 24px; cursor: pointer; font-size: 15px; color: var(--text-light); border-bottom: 3px solid transparent; margin-bottom: -2px; transition: all .3s; }
.product-tabs .tab.active, .product-tabs .tab:hover { color: var(--primary); border-bottom-color: var(--primary); }
.product-detail { display: none; }
.product-detail.active { display: block; }
.product-detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: start; }
.product-detail-grid img { width: 100%; border-radius: 4px; }
.product-info h2 { font-size: 26px; color: var(--primary); margin-bottom: 16px; }
.product-info .product-desc { color: var(--text-light); line-height: 1.9; margin-bottom: 20px; }
.product-info .product-desc p { margin-bottom: 12px; }
.product-info .product-desc img { max-width: 100%; height: auto; border-radius: 4px; }
.product-info .product-desc video { max-width: 100%; border-radius: 4px; }
.product-specs { background: var(--light); padding: 20px; border-radius: 4px; margin-bottom: 20px; }
.product-specs h4 { color: var(--primary); margin-bottom: 12px; font-size: 15px; }
.spec-list { display: flex; flex-wrap: wrap; gap: 8px; }
.spec-tag { background: #fff; border: 1px solid #dde; color: var(--text); padding: 5px 14px; border-radius: 20px; font-size: 13px; }
.product-features { margin-top: 20px; }
.product-features h4 { color: var(--primary); margin-bottom: 12px; font-size: 15px; }
.product-features li { padding: 6px 0; font-size: 14px; color: var(--text-light); padding-left: 16px; position: relative; }
.product-features li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: bold; }
.product-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 30px; }
.product-gallery img { width: 100%; height: 140px; object-fit: cover; border-radius: 3px; }
.cost-table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 14px; }
.cost-table th { background: var(--primary); color: #fff; padding: 10px 14px; text-align: left; }
.cost-table td { padding: 10px 14px; border-bottom: 1px solid #eee; }
.cost-table tr:nth-child(even) td { background: var(--light); }
.cost-table .total td { font-weight: bold; color: var(--primary); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.cost-compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
@media (max-width: 768px) {
  .cost-compare-grid { grid-template-columns: 1fr; gap: 20px; }
  .cost-table th, .cost-table td { padding: 8px 10px; font-size: 13px; white-space: nowrap; }
}

/* ===== 案例页面 ===== */
.cases-section { padding: 80px 0; }
.cases-filter { display: flex; gap: 12px; margin-bottom: 36px; flex-wrap: wrap; }
.filter-btn { padding: 8px 20px; border: 1px solid #ddd; border-radius: 20px; cursor: pointer; font-size: 14px; transition: all .3s; background: #fff; }
.filter-btn.active, .filter-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.cases-full-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-full-card { background: #fff; border-radius: 4px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: all .3s; }
.case-full-card:hover { transform: translateY(-4px); box-shadow: 0 10px 28px rgba(0,48,135,.12); }
.case-full-card .img { height: 200px; overflow: hidden; }
.case-full-card .img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.case-full-card:hover .img img { transform: scale(1.06); }
.case-full-card .body { padding: 20px; }
.case-full-card .body .cat { font-size: 12px; color: var(--accent); margin-bottom: 6px; }
.case-full-card .body h3 { font-size: 16px; color: var(--text); margin-bottom: 8px; }
.case-full-card .body p { font-size: 13px; color: var(--text-light); line-height: 1.7; }

/* ===== 供应链金融页面 ===== */
.supply-section { padding: 80px 0; }
.supply-section.bg-light { background: var(--light); }
.supply-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; align-items: center; }
.supply-grid img { width: 100%; border-radius: 4px; }
.supply-content h2 { font-size: 26px; color: var(--primary); margin-bottom: 16px; }
.supply-content p { color: var(--text-light); line-height: 1.9; margin-bottom: 14px; }
.service-list { margin-top: 20px; }
.service-list li { display: flex; align-items: flex-start; gap: 12px; padding: 12px 0; border-bottom: 1px solid #eee; }
.service-list li .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); margin-top: 6px; flex-shrink: 0; }
.service-list li p { font-size: 14px; color: var(--text-light); }
.logistics-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 30px; }
.log-stat { text-align: center; background: var(--primary); color: #fff; padding: 24px; border-radius: 4px; }
.log-stat .num { font-size: 36px; font-weight: 700; color: var(--accent); }
.log-stat .label { font-size: 13px; margin-top: 6px; opacity: .85; }

/* ===== 联系页面 ===== */
.contact-section { padding: 80px 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 50px; }
.contact-info-block h2 { font-size: 26px; color: var(--primary); margin-bottom: 24px; }
.contact-item { display: flex; gap: 16px; margin-bottom: 24px; }
.contact-item .icon { width: 48px; height: 48px; background: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; flex-shrink: 0; }
.contact-item h4 { font-size: 15px; color: var(--text); margin-bottom: 4px; }
.contact-item p { font-size: 14px; color: var(--text-light); }
.contact-form { background: var(--light); padding: 36px; border-radius: 4px; }
.contact-form h2 { font-size: 22px; color: var(--primary); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; color: var(--text); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px 14px; border: 1px solid #ddd; border-radius: 3px; font-size: 14px; font-family: inherit; transition: border .3s; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }
.form-group textarea { height: 120px; resize: vertical; }
.map-section { padding: 0 0 80px; }
.map-placeholder { height: 400px; background: linear-gradient(135deg, #e8eef5, #d0dce8); border-radius: 4px; display: flex; align-items: center; justify-content: center; color: var(--text-light); font-size: 16px; }

/* ===== 新闻列表页面 ===== */
.news-section { padding: 80px 0; }
.news-section.bg-light { background: var(--light); }
.news-tabs { display: flex; gap: 0; border-bottom: 2px solid #eee; margin-bottom: 40px; }
.news-tab { padding: 12px 28px; font-size: 15px; cursor: pointer; color: var(--text-light); border-bottom: 2px solid transparent; margin-bottom: -2px; transition: all .3s; }
.news-tab.active, .news-tab:hover { color: var(--primary); border-bottom-color: var(--primary); }
.news-list-grid { display: grid; gap: 20px; }
.news-list-item { display: flex; gap: 0; background: #fff; border-radius: 4px; overflow: hidden; box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: all .3s; cursor: pointer; border: 1px solid #f0f0f0; }
.news-list-item:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,48,135,.1); }
.news-list-item .news-thumb { width: 280px; min-height: 170px; flex-shrink: 0; background: linear-gradient(135deg,#003087,#0056b3); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,.2); font-size: 48px; overflow: hidden; }
.news-list-item .news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.news-list-item:hover .news-thumb img { transform: scale(1.06); }
.news-list-item .news-content { padding: 22px 24px; flex: 1; display: flex; flex-direction: column; justify-content: space-between; }
.news-list-item .news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.news-list-item .news-tag { background: var(--primary); color: #fff; font-size: 12px; padding: 3px 10px; border-radius: 2px; }
.news-list-item .news-date-text { font-size: 13px; color: var(--text-light); }
.news-list-item h3 { font-size: 18px; color: var(--text); margin-bottom: 10px; line-height: 1.45; font-weight: 600; transition: color .3s; }
.news-list-item:hover h3 { color: var(--primary); }
.news-list-item p { font-size: 13px; color: var(--text-light); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-list-item .read-more { font-size: 13px; color: var(--primary); margin-top: 12px; display: inline-flex; align-items: center; gap: 4px; }
.news-list-item .read-more::after { content: '→'; transition: transform .3s; }
.news-list-item:hover .read-more::after { transform: translateX(4px); }

/* ===== 新闻详情页面 ===== */
.news-detail-layout { padding: 50px 0 80px; }
.news-detail-layout .container { display: grid; grid-template-columns: 1fr 320px; gap: 40px; }
.news-detail-main { background: #fff; border-radius: 4px; padding: 36px; box-shadow: 0 2px 12px rgba(0,0,0,.06); }
.news-detail-main h1 { font-size: 26px; color: var(--text); margin-bottom: 16px; line-height: 1.4; }
.news-detail-meta { display: flex; gap: 20px; font-size: 13px; color: var(--text-light); padding-bottom: 20px; border-bottom: 1px solid #eee; margin-bottom: 24px; }
.news-detail-content { font-size: 15px; color: var(--text); line-height: 1.9; }
.news-detail-content p { margin-bottom: 16px; }
.news-detail-content img { max-width: 100%; border-radius: 4px; margin: 16px 0; }
.news-detail-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 36px; padding-top: 24px; border-top: 1px solid #eee; }
.news-detail-nav a { font-size: 14px; color: var(--primary); max-width: 45%; }
.news-detail-nav a:hover { color: var(--accent); }
.news-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-block { background: #fff; border-radius: 4px; padding: 24px; box-shadow: 0 2px 12px rgba(0,0,0,.06); }
.sidebar-block h4 { font-size: 16px; color: var(--primary); margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--primary); }
.sidebar-news-item { display: flex; gap: 12px; padding: 10px 0; border-bottom: 1px solid #f0f0f0; }
.sidebar-news-item:last-child { border-bottom: none; }
.sidebar-news-item .date { font-size: 12px; color: var(--text-light); white-space: nowrap; }
.sidebar-news-item a { font-size: 13px; color: var(--text); line-height: 1.5; }
.sidebar-news-item a:hover { color: var(--primary); }

/* ===== 响应式 ===== */

/* 平板 1024px */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: 30px; }
  .biz-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-full-grid { grid-template-columns: repeat(2, 1fr); }
  .about-home .container { gap: 36px; }
  .intro-grid { gap: 36px; }
  .supply-grid { gap: 36px; }
  .news-detail-layout .container { grid-template-columns: 1fr 280px; gap: 24px; }
}

/* 手机横屏 / 小平板 768px */
@media (max-width: 768px) {
  .top-bar .container { flex-direction: column; gap: 4px; text-align: center; font-size: 12px; }
  .logo-text h1 { font-size: 15px; }
  .logo-text span { display: none; }
  .hamburger { display: flex; }
  .nav-contact { display: none; }
  nav { display: none; position: absolute; top: 75px; left: 0; right: 0; background: #fff; box-shadow: 0 5px 20px rgba(0,0,0,.1); max-height: calc(100vh - 75px); overflow-y: auto; z-index: 999; }
  nav.open { display: block; }
  nav ul { flex-direction: column; }
  nav ul li > a { height: auto; line-height: 1.5; padding: 14px 20px; border-bottom: 1px solid #f0f0f0; border-bottom-width: 1px !important; border-left: 3px solid transparent; }
  nav ul li.active > a { border-left-color: var(--primary); border-bottom: 1px solid #f0f0f0; }
  nav ul li > a:hover { border-left-color: var(--primary); }
  .dropdown { position: static; opacity: 1; visibility: visible; box-shadow: none; background: #f8f9fa; min-width: unset; }
  .dropdown li a { padding: 10px 20px 10px 32px; font-size: 13px; }
  .hero { height: 420px; }
  .hero-content h2 { font-size: 26px; }
  .hero-content p { font-size: 14px; margin-bottom: 20px; }
  .btn { padding: 10px 22px; font-size: 14px; }
  .hero-arrows button { width: 36px; height: 36px; font-size: 15px; }
  .stats { padding: 36px 0; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-num { font-size: 36px; }
  .about-home { padding: 50px 0; }
  .about-home .container { grid-template-columns: 1fr; gap: 24px; }
  .about-badge { bottom: 10px; right: 10px; padding: 14px 18px; }
  .about-badge .num { font-size: 28px; }
  .about-text h2 { font-size: 22px; }
  .products-home { padding: 50px 0; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .section-title h2 { font-size: 24px; }
  .cases-home { padding: 50px 0; }
  .cases-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .case-card { height: 180px; }
  .news-home { padding: 50px 0; }
  .news-grid { grid-template-columns: 1fr; gap: 20px; }
  .brands { padding: 40px 0; }
  .brands-track { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .brand-item { width: 100%; }
  .brand-img { width: 100%; height: auto; aspect-ratio: 1; }
  .footer-main { grid-template-columns: 1fr; gap: 24px; padding: 40px 0; }
  .footer-qr img { width: 90px; height: 90px; }
  .footer-bottom .container { flex-direction: column; text-align: center; gap: 6px; }
  .page-banner { height: 180px; }
  .page-banner h1 { font-size: 26px; }
  .about-section { padding: 50px 0; }
  .intro-grid { grid-template-columns: 1fr; gap: 24px; }
  .biz-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .honor-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .concept-grid { grid-template-columns: 1fr; gap: 16px; }
  .products-section { padding: 50px 0; }
  .product-tabs { overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .product-tabs::-webkit-scrollbar { display: none; }
  .product-tabs .tab { white-space: nowrap; padding: 10px 16px; font-size: 14px; }
  .product-detail-grid { grid-template-columns: 1fr; gap: 24px; }
  .product-gallery { grid-template-columns: repeat(2, 1fr); }
  .cases-section { padding: 50px 0; }
  .cases-full-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .supply-section { padding: 50px 0; }
  .supply-grid { grid-template-columns: 1fr; gap: 24px; }
  .logistics-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .contact-section { padding: 50px 0; }
  .contact-grid { grid-template-columns: 1fr; gap: 24px; }
  .contact-form { padding: 24px; }
  .form-row { grid-template-columns: 1fr; }
  .news-section { padding: 50px 0; }
  .news-tabs { overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .news-tabs::-webkit-scrollbar { display: none; }
  .news-tab { white-space: nowrap; padding: 10px 18px; }
  .news-list-item { flex-direction: column; }
  .news-list-item .news-thumb { width: 100%; min-height: 180px; }
  .news-list-item .news-content { padding: 16px; }
  .news-detail-layout { padding: 36px 0 50px; }
  .news-detail-layout .container { grid-template-columns: 1fr; }
  .news-detail-main { padding: 24px; }
  .news-detail-main h1 { font-size: 20px; }
  .news-detail-meta { flex-wrap: wrap; gap: 10px; }
}

/* 手机竖屏 480px */
@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero { height: 360px; }
  .hero-content h2 { font-size: 22px; }
  .hero-content p { font-size: 13px; display: none; }
  .hero-btns { gap: 10px; }
  .btn { padding: 9px 18px; font-size: 13px; }
  .stat-num { font-size: 30px; }
  .stat-num span { font-size: 18px; }
  .stat-label { font-size: 12px; }
  .products-grid { grid-template-columns: 1fr; }
  .product-card .img-wrap { height: 160px; }
  .cases-grid { grid-template-columns: 1fr; }
  .cases-full-grid { grid-template-columns: 1fr; }
  .case-card { height: 200px; }
  .honor-grid { grid-template-columns: 1fr; }
  .logistics-stats { grid-template-columns: 1fr; }
  .brands-track { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .brand-img { width: 100%; height: auto; aspect-ratio: 1; }
  .news-detail-nav { flex-direction: column; gap: 12px; }
  .news-detail-nav a { max-width: 100%; }
  .page-banner { height: 150px; }
  .page-banner h1 { font-size: 22px; }
  .page-banner .breadcrumb { font-size: 12px; }
  .footer-col { display: none; }
  .footer-brand { display: block; }
}

/* ===== 经营理念新样式 ===== */
.concept-card-new { display: flex; align-items: center; gap: 24px; padding: 36px 32px; border-radius: 8px; color: #fff; transition: transform .3s, box-shadow .3s; }
.concept-card-new:hover { transform: translateY(-4px); box-shadow: 0 12px 32px rgba(0,0,0,.2); }
.concept-icon { font-size: 56px; flex-shrink: 0; line-height: 1; }
.concept-body h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.concept-body p { font-size: 14px; line-height: 1.8; opacity: .9; }

/* ===== 分支机构卡片 ===== */
.branch-card { position: relative; border-radius: 6px; background-size: cover; background-position: center; min-height: 220px; display: flex; flex-direction: column; justify-content: flex-end; overflow: hidden; box-shadow: 0 4px 12px rgba(0,0,0,.08); transition: transform .3s, box-shadow .3s; }
.branch-card:hover { transform: translateY(-4px); box-shadow: 0 10px 28px rgba(0,0,0,.15); }
.branch-card-overlay { position: absolute; bottom: 0; left: 0; right: 0; height: 140px; background: linear-gradient(transparent, rgba(0,0,0,.8)); }
.branch-card-content { position: relative; padding: 24px; color: #fff; text-align: center; }
.branch-card-content h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.branch-card-content p { font-size: 14px; opacity: .95; line-height: 1.5; }