/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","微软雅黑","PingFang SC",sans-serif;color:#333;line-height:1.6}
a{text-decoration:none}
/* ===== Variables (Trade Edition - Deep Blue + Gold) ===== */
:root{--primary:#1B3A5C;--primary-light:#2A5080;--accent:#C8A84E;--accent-light:#F5E6B8;--text:#333;--text-light:#666;--bg:#f5f8fc;--white:#fff;--shadow:0 2px 20px rgba(0,0,0,.08)}
/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.animate{animation:fadeInUp .6s ease forwards}
.animate-delay-1{animation-delay:.1s}
.animate-delay-2{animation-delay:.2s}
.animate-delay-3{animation-delay:.3s}
/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;background:var(--white);box-shadow:0 1px 10px rgba(0,0,0,.06);z-index:1000;height:70px}
.header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:70px}
.logo{display:flex;align-items:center;gap:10px;padding-left:40px}
.logo img{height:52px}
.logo-text{font-size:22px;font-weight:600;color:var(--primary);margin-left:2px;white-space:nowrap;position:relative;top:4px}
.nav{display:flex;gap:0}
.nav a{padding:0 20px;line-height:70px;color:#333;font-size:16px;font-weight:500;transition:.2s;position:relative}
.nav a:hover,.nav a.active{color:var(--primary)}
.nav a::after{content:'';position:absolute;bottom:0;left:20px;right:20px;height:3px;background:var(--accent);transform:scaleX(0);transition:.2s}
.nav a:hover::after,.nav a.active::after{transform:scaleX(1)}
.nav-toggle{display:none;flex-direction:column;gap:4px;cursor:pointer}
.nav-toggle span{width:24px;height:2px;background:#333}
/* ===== Banner (Image Banner instead of Video) ===== */
.banner{position:relative;margin-top:70px;width:100%;height:calc(100vh - 70px);overflow:hidden;background:linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%)}
.banner .bg-pattern{position:absolute;top:0;left:0;width:100%;height:100%;opacity:.08;background-image:radial-gradient(circle at 25% 25%, #fff 1px, transparent 1px),radial-gradient(circle at 75% 75%, #fff 1px, transparent 1px);background-size:60px 60px}
.banner .overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.2);z-index:1}
.banner .content{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;color:var(--white);padding:0 20px}
.banner .content h1{font-size:44px;font-weight:700;margin-bottom:16px;text-shadow:0 2px 10px rgba(0,0,0,.3);animation:fadeInUp .8s ease}
.banner .content p{font-size:18px;max-width:700px;opacity:.9;margin-bottom:30px;animation:fadeInUp .8s .2s ease both}
.banner .content .btn{display:inline-block;padding:14px 48px;background:var(--accent);color:#fff;border-radius:30px;font-size:16px;transition:.3s;animation:fadeInUp .8s .4s ease both}
.banner .content .btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(200,168,78,.4)}
/* ===== Sections ===== */
.section{padding:70px 20px}
.banner + .section{padding-top:40px}
.section-inner{max-width:1200px;margin:0 auto}
.section-title{text-align:center;font-size:28px;color:var(--primary);margin-bottom:8px}
.section-subtitle{text-align:center;color:var(--text-light);margin-bottom:40px;font-size:15px}
.section.bg{background:var(--bg)}
/* ===== Service Cards ===== */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:var(--white);padding:28px 24px;border-radius:8px;box-shadow:var(--shadow);transition:.3s;text-align:center;border-bottom:3px solid transparent}
.card:hover{transform:translateY(-4px);border-bottom-color:var(--accent);box-shadow:0 8px 30px rgba(200,168,78,.15)}
.card .icon{width:60px;height:60px;margin:0 auto 16px;background:var(--accent-light);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;transition:.3s}
.card:hover .icon{background:var(--accent);color:#fff}
.card h3{font-size:17px;margin-bottom:8px}
.card p{color:var(--text-light);font-size:13px;line-height:1.7}
/* ===== Image Cards ===== */
.cards-img{display:grid;grid-template-columns:repeat(3,280px);gap:40px;justify-content:center}
.card-img{border-radius:8px;overflow:hidden;box-shadow:var(--shadow);transition:.3s;background:var(--white)}
.card-img:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(27,58,92,.15)}
.card-img img{width:100%;height:200px;object-fit:cover;display:block}
.card-img .card-body{padding:18px 20px}
.card-img .card-body h3{font-size:16px;margin-bottom:6px;color:var(--primary)}
.card-img .card-body p{color:var(--text-light);font-size:13px;line-height:1.7}
/* ===== Service/Product Detail with Image ===== */
.service-block{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;margin:30px 0;padding:24px;background:var(--white);border-radius:8px;box-shadow:var(--shadow)}
.service-block img{width:100%;border-radius:6px}
.service-block h2{color:var(--primary)!important;margin-top:0!important}
.service-block ul{padding-left:20px;color:var(--text-light)}
.service-block li{margin-bottom:6px;line-height:1.7}
/* ===== About Block ===== */
.about-block{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-block img{width:100%;border-radius:8px;box-shadow:var(--shadow)}
.about-block h2{color:var(--primary);font-size:24px;margin-bottom:16px}
.about-block p{color:var(--text-light);margin-bottom:12px;line-height:1.8}
/* ===== Stats ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;padding:30px 0}
.stat-circle{width:120px;height:120px;border-radius:50%;border:4px solid var(--accent);display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto 12px;transition:.3s}
.stat-circle:hover{background:var(--accent);color:#fff}
.stat-circle h3{font-size:28px;color:var(--accent);transition:.3s}
.stat-circle:hover h3{color:#fff}
.stat-circle p{font-size:12px;color:var(--text-light);margin-top:2px;transition:.3s}
.stat-circle:hover p{color:rgba(255,255,255,.8)}
/* ===== Contact Bar ===== */
.contact-bar{background:var(--primary);color:var(--white);text-align:center;padding:40px 20px}
.contact-bar h2{font-size:24px;margin-bottom:8px}
.contact-bar .phone{font-size:32px;font-weight:700;margin:8px 0}
.contact-bar .btn{display:inline-block;margin-top:16px;padding:12px 40px;background:var(--white);color:var(--primary);border-radius:30px;font-weight:600;transition:.3s}
.contact-bar .btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,0,0,.2)}
/* ===== Page Header ===== */
.page-header{background:linear-gradient(135deg, var(--primary), var(--primary-light));color:#fff;text-align:center;padding:100px 20px 60px;margin-top:70px}
.page-header h1{font-size:36px;margin-bottom:10px}
.page-header p{font-size:16px;opacity:.85}
/* ===== Contact Info ===== */
.contact-info{padding:24px;background:var(--white);border-radius:8px;box-shadow:var(--shadow)}
.contact-info h3{color:var(--primary);margin-bottom:12px}
.contact-info p{margin-bottom:8px;color:var(--text-light)}
/* ===== Form ===== */
.form-group{margin-bottom:16px}
.form-group label{display:block;margin-bottom:4px;font-weight:500;color:#333;font-size:14px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 14px;border:1px solid #ddd;border-radius:6px;font-size:14px;transition:.2s}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(200,168,78,.15)}
.form-group textarea{height:120px;resize:vertical}
.btn-submit{padding:12px 36px;background:var(--accent);color:#fff;border:none;border-radius:6px;font-size:16px;cursor:pointer;transition:.3s}
.btn-submit:hover{background:#b8973e;transform:translateY(-1px)}
/* ===== Footer ===== */
.footer{background:#1a2332;color:#ccc;padding:30px 20px 12px}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;flex-direction:column;gap:12px}
.footer-logo{display:flex;align-items:center}
.footer-logo img{height:50px}
.footer-divider{height:1px;background:rgba(255,255,255,.12)}
.footer-brand-text .tagline{font-size:16px;font-weight:600;color:var(--accent);margin-bottom:6px}
.footer-brand-text .badge{display:inline-block;background:var(--accent);color:#fff;padding:2px 10px;border-radius:4px;font-size:12px;margin-bottom:8px}
.footer-brand-text .slogan{color:var(--accent);font-style:italic;margin-top:8px}
.footer h3{color:#fff;font-size:15px;margin-bottom:12px}
.footer a{color:#aaa;font-size:13px;transition:.2s;line-height:2.2}
.footer a:hover{color:var(--accent)}
.footer p{font-size:13px;line-height:1.8}
.footer-bottom{max-width:1200px;margin:20px auto 0;padding-top:12px;border-top:1px solid rgba(255,255,255,.08);text-align:center;font-size:12px;color:#777}
/* ===== News ===== */
.news-list{max-width:800px;margin:0 auto}
.news-item{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid #eee;align-items:flex-start}
.news-item:last-child{border-bottom:none}
.news-item .thumb{width:140px;min-width:140px;height:100px;border-radius:6px;overflow:hidden}
.news-item .thumb img{width:100%;height:100%;object-fit:cover}
.news-item .date{color:#999;font-size:13px}
.news-item h3{margin:6px 0;font-size:18px}
.news-item h3 a{color:#333;transition:.2s}
.news-item h3 a:hover{color:var(--primary)}
.news-item p{color:var(--text-light);font-size:14px}
/* ===== Responsive ===== */
@media(max-width:1024px){
  .cards-img{grid-template-columns:repeat(2,1fr);gap:20px}
  .about-block{grid-template-columns:1fr;gap:30px}
  .service-block{grid-template-columns:1fr;gap:20px}
}
@media(max-width:768px){
  .header-inner{padding:0 16px}
  .logo{padding-left:0}
  .logo-text{font-size:16px}
  .nav{display:none;position:fixed;top:70px;left:0;right:0;background:var(--white);flex-direction:column;box-shadow:0 10px 20px rgba(0,0,0,.1)}
  .nav.open{display:flex}
  .nav a{line-height:50px;padding:0 20px;border-bottom:1px solid #f0f0f0}
  .nav a::after{display:none}
  .nav-toggle{display:flex}
  .banner .content h1{font-size:28px}
  .banner .content p{font-size:15px}
  .footer-inner{grid-template-columns:1fr;gap:24px}
  .cards-img{grid-template-columns:1fr;gap:16px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stat-circle{width:100px;height:100px}
  .stat-circle h3{font-size:22px}
  .page-header{padding:80px 20px 40px}
  .page-header h1{font-size:26px}
  .about-block{grid-template-columns:1fr;gap:24px}
  .service-block{grid-template-columns:1fr;gap:16px}
  .news-item{flex-direction:column}
  .news-item .thumb{width:100%;height:180px}
}
@media(max-width:480px){
  .banner .content h1{font-size:22px}
  .section-title{font-size:22px}
  .stat-circle{width:80px;height:80px}
  .stat-circle h3{font-size:18px}
}
/* ===== Contact Page Layout ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
@media(max-width:768px){.contact-grid{grid-template-columns:1fr;gap:24px}}