*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","Helvetica Neue",Arial,sans-serif;font-size:14px;line-height:1.7;color:#333;background:#f0f4f8}
a{color:#333;text-decoration:none;transition:color .2s,background .2s}
a:hover{color:#1565c0}
img{max-width:100%;border:0}
.container{max-width:1200px;margin:0 auto;padding:0 15px}

/* Header */
.top-bar{background:#0d47a1;color:#b3c9e6;font-size:12px;line-height:36px}
.top-bar .container{display:flex;justify-content:space-between}
.header-main{background:#fff;box-shadow:0 2px 10px rgba(13,71,161,.1)}
.header-flex{display:flex;align-items:center;justify-content:space-between;height:80px}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{background:linear-gradient(135deg,#1565c0,#0d47a1);color:#fff;width:50px;height:50px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:bold;letter-spacing:-1px}
.logo-text{font-size:20px;font-weight:bold;color:#0d47a1}
.main-nav ul{list-style:none;display:flex}
.main-nav li{margin-left:30px}
.main-nav a{font-size:16px;padding:8px 0;display:inline-block;border-bottom:2px solid transparent;position:relative}
.main-nav a:hover,.main-nav a.on{color:#1565c0;border-bottom-color:#1565c0}

/* Hero */
.hero{background:linear-gradient(135deg,#0d47a1 0%,#1565c0 50%,#1976d2 100%);color:#fff;padding:100px 0;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 0v60M0 30h60' stroke='rgba(255,255,255,.05)' stroke-width='1'/%3E%3C/svg%3E");opacity:.5}
.hero-content{position:relative;text-align:center}
.hero-badge{display:inline-block;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.3);padding:6px 24px;border-radius:20px;font-size:14px;margin-bottom:20px;letter-spacing:2px}
.hero h1{font-size:44px;line-height:1.3;margin-bottom:20px;font-weight:700}
.hero-sub{font-size:20px;margin-bottom:30px;opacity:.95;letter-spacing:1px}
.hero-meta{display:flex;justify-content:center;gap:50px;margin-bottom:35px}
.hero-meta span{font-size:16px}
.hero-meta i{font-style:normal;display:inline-block;width:40px;height:40px;line-height:40px;border-radius:50%;background:rgba(255,255,255,.2);margin-right:10px;font-size:14px}
.hero-actions{display:flex;justify-content:center;gap:20px}
.btn{display:inline-block;padding:13px 40px;border-radius:4px;font-size:15px;cursor:pointer;border:2px solid transparent;transition:all .2s;font-weight:500}
.btn-primary{background:#fff;color:#1565c0;border-color:#fff}
.btn-primary:hover{background:#e3f2fd;transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,0,0,.2)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline:hover{background:rgba(255,255,255,.1)}
.btn-light{background:#1565c0;color:#fff;border-color:#1565c0}
.btn-light:hover{background:#0d47a1}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-outline-light:hover{background:rgba(255,255,255,.1)}

/* Quick bar */
.quick-bar{background:#fff;margin-top:-40px;position:relative;z-index:2;padding:0 0 60px}
.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;box-shadow:0 4px 20px rgba(0,0,0,.08);border-radius:8px;overflow:hidden}
.quick-item{padding:35px 25px;text-align:center;border-right:1px solid #eee;transition:all .3s}
.quick-item:last-child{border-right:none}
.quick-item:hover{background:#f5f9ff;transform:translateY(-3px)}
.quick-icon{width:60px;height:60px;margin:0 auto 15px;background:linear-gradient(135deg,#1565c0,#42a5f5);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:bold}
.quick-item h3{font-size:17px;margin-bottom:8px;color:#0d47a1}
.quick-item p{color:#888;font-size:13px}

/* Section */
.section{padding:60px 0}
.section-white{background:#fff}
.section-blue{background:linear-gradient(135deg,#f5f9ff,#e3f2fd)}
.section-title{text-align:center;font-size:28px;margin-bottom:10px;color:#0d47a1;font-weight:700}
.section-title.left{text-align:left}
.section-sub{text-align:center;color:#888;margin-bottom:40px}
.section-sub.light{color:#5a7fa8}
.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}
.more-link{color:#1565c0;font-size:14px}
.more-link:hover{text-decoration:underline}

/* About */
.about-preview{display:grid;grid-template-columns:1.2fr 1fr;gap:50px;align-items:center}
.about-text p{margin-bottom:15px;color:#555;font-size:15px;line-height:1.9}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stat-item{background:linear-gradient(135deg,#f5f9ff,#e3f2fd);border-radius:8px;padding:30px 20px;text-align:center;border-bottom:3px solid #1565c0}
.stat-num{display:block;font-size:32px;font-weight:bold;color:#1565c0}
.stat-label{color:#666;font-size:13px;margin-top:5px;display:block}

/* Product grid */
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.product-card{background:#fff;border:1px solid #e0e8f0;border-radius:8px;padding:30px 20px;text-align:center;transition:all .3s}
.product-card:hover{box-shadow:0 8px 25px rgba(21,101,192,.12);transform:translateY(-3px);border-color:#1565c0}
.product-icon{width:70px;height:70px;margin:0 auto 15px;background:linear-gradient(135deg,#1565c0,#42a5f5);color:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:bold}
.product-card h3{font-size:17px;margin-bottom:10px;color:#0d47a1}
.product-card p{color:#777;font-size:13px;line-height:1.6}
.product-spec{color:#1565c0!important;font-size:12px!important;margin-top:8px;font-weight:500}

/* Features */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.feature-item{background:#fff;padding:30px;border-radius:8px;border-top:3px solid #1565c0;box-shadow:0 2px 8px rgba(0,0,0,.04);transition:all .3s}
.feature-item:hover{box-shadow:0 8px 20px rgba(21,101,192,.1);transform:translateY(-3px)}
.feature-item h3{font-size:18px;margin-bottom:10px;color:#0d47a1}
.feature-item p{color:#666}

/* News */
.news-section{background:#fff}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.news-card{background:#f8fafd;border:1px solid #e0e8f0;border-radius:8px;padding:25px;transition:all .3s}
.news-card:hover{box-shadow:0 5px 15px rgba(21,101,192,.1);border-color:#90caf9}
.news-card .news-date{display:inline-block;background:#1565c0;color:#fff;padding:4px 12px;border-radius:4px;font-size:12px;margin-bottom:12px}
.news-card h3{font-size:16px;margin-bottom:10px;line-height:1.5}
.news-card h3 a:hover{color:#1565c0}
.news-card p{color:#777;font-size:13px}

/* CTA */
.cta-banner{background:linear-gradient(135deg,#0d47a1,#1565c0);color:#fff;padding:60px 0;text-align:center}
.cta-banner h2{font-size:30px;margin-bottom:10px}
.cta-banner p{color:#b3c9e6;margin-bottom:25px;font-size:16px}
.cta-actions{display:flex;justify-content:center;gap:20px}

/* Page banner */
.page-banner{background:linear-gradient(135deg,#0d47a1,#1976d2);color:#fff;padding:45px 0;text-align:center}
.page-banner h1{font-size:28px}

/* Product layout */
.product-layout{display:grid;grid-template-columns:220px 1fr;gap:30px}
.product-sidebar{background:#fff;border-radius:8px;padding:20px;height:fit-content;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.product-sidebar h3{font-size:16px;padding-bottom:12px;border-bottom:2px solid #1565c0;margin-bottom:10px;color:#0d47a1}
.product-sidebar ul{list-style:none}
.product-sidebar li a{display:block;padding:10px 0;border-bottom:1px solid #f0f4f8}
.product-sidebar li a:hover,.product-sidebar li a.on{color:#1565c0;padding-left:5px;font-weight:500}
.product-content h2{font-size:22px;margin-bottom:20px;color:#0d47a1}
.product-tip{background:#e3f2fd;border:1px solid #90caf9;border-radius:6px;padding:18px;margin-top:25px;color:#1565c0}
.product-tip strong{font-size:16px}

/* Article */
.article{background:#fff;padding:40px;border-radius:8px;max-width:950px;margin:0 auto;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.article h3{font-size:18px;margin:25px 0 12px;color:#0d47a1;border-left:4px solid #1565c0;padding-left:12px}
.article p{margin-bottom:12px;color:#555;line-height:1.9}
.info-list{list-style:none;padding:15px 0 15px 20px}
.info-list li{margin-bottom:10px;color:#555}
.info-list b{color:#333;display:inline-block;min-width:90px}

/* Register */
.register-box{background:#f5f9ff;border-radius:8px;padding:30px;margin:20px 0}
.register-box h3{color:#0d47a1;margin-bottom:20px;text-align:center}
.register-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.register-item{background:#fff;padding:20px;border-radius:6px;border-left:3px solid #1565c0}
.register-item h4{color:#1565c0;margin-bottom:8px}
.register-item p{color:#666;font-size:13px;margin:0}
.steps{display:flex;justify-content:space-between;gap:15px;margin:25px 0}
.step-item{flex:1;text-align:center;padding:20px 10px;background:#f5f9ff;border-radius:8px}
.step-item span{display:inline-block;width:40px;height:40px;line-height:40px;background:#1565c0;color:#fff;border-radius:50%;font-size:18px;font-weight:bold;margin-bottom:10px}
.step-item p{margin:0;color:#555;font-size:13px;line-height:1.6}
.register-tip{background:#fff3e0;border:1px solid #ffcc80;border-radius:6px;padding:15px;color:#e65100;margin-top:20px}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info .contact-item{margin-bottom:25px;padding-bottom:20px;border-bottom:1px solid #eee}
.contact-info h3{font-size:16px;color:#0d47a1;margin-bottom:8px}
.contact-info p{color:#555;margin-bottom:4px}
.contact-form{background:#fff;padding:30px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.04)}
.contact-form h3{font-size:18px;margin-bottom:20px;color:#0d47a1}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;padding:12px;border:1px solid #d0dae5;border-radius:4px;font-size:14px;font-family:inherit;background:#fafbfc}
.contact-form input:focus,.contact-form textarea:focus,.contact-form select:focus{outline:none;border-color:#1565c0;background:#fff}
.contact-form p{margin-bottom:15px}

/* News list */
.news-list{max-width:950px;margin:0 auto}
.news-item{background:#fff;padding:25px 30px;margin-bottom:15px;border-radius:8px;display:flex;gap:25px;align-items:flex-start;box-shadow:0 2px 6px rgba(0,0,0,.03);transition:all .3s}
.news-item:hover{box-shadow:0 5px 15px rgba(21,101,192,.08)}
.news-date-box{background:linear-gradient(135deg,#1565c0,#0d47a1);color:#fff;border-radius:8px;padding:15px 20px;text-align:center;min-width:80px;flex-shrink:0}
.news-date-box .day{display:block;font-size:28px;font-weight:bold;line-height:1.2}
.news-date-box .month{display:block;font-size:12px;opacity:.9}
.news-body{flex:1}
.news-body h2{font-size:18px;margin-bottom:8px}
.news-body h2 a:hover{color:#1565c0}
.news-body p{color:#666;font-size:13px;line-height:1.7}

/* Footer */
.site-footer{background:#0a1929;color:#8aa4bf;padding:50px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1.3fr;gap:40px;padding-bottom:35px;border-bottom:1px solid #1a3a5c}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:15px}
.footer-col p{margin-bottom:8px;font-size:13px;line-height:1.8}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:8px}
.footer-col a{color:#8aa4bf;font-size:13px}
.footer-col a:hover{color:#fff}
.footer-bottom{padding:20px 0;text-align:center;font-size:12px;display:flex;justify-content:space-between;color:#5a7a99}

/* Responsive */
@media(max-width:768px){
  .header-flex{flex-direction:column;height:auto;padding:15px 0}
  .logo{margin-bottom:10px}
  .main-nav ul{flex-wrap:wrap;justify-content:center}
  .main-nav li{margin:5px 10px}
  .hero{padding:60px 0}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15px}
  .hero-meta{flex-direction:column;gap:15px}
  .hero-actions{flex-direction:column;align-items:center}
  .quick-grid,.product-grid,.feature-grid,.news-grid{grid-template-columns:1fr}
  .about-preview,.contact-grid,.footer-grid,.register-grid{grid-template-columns:1fr;gap:25px}
  .product-layout{grid-template-columns:1fr}
  .about-stats{grid-template-columns:1fr 1fr}
  .steps{flex-wrap:wrap}
  .step-item{min-width:45%}
  .cta-actions{flex-direction:column;align-items:center}
  .news-item{flex-direction:column;gap:15px}
  .top-bar .container{flex-direction:column;text-align:center}
}