:root{
  --primary:#1b3a6b;
  --primary-dark:#12294d;
  --primary-light:#3a63a0;
  --accent:#c0392b;
  --text:#22272e;
  --text-light:#5b6472;
  --bg:#ffffff;
  --bg-alt:#f4f6fa;
  --border:#e2e6ee;
  --shadow:0 4px 18px rgba(18,41,77,.08);
  --radius:12px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:"Helvetica Neue","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
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{padding:80px 0}
.section-alt{background:var(--bg-alt)}
.section-header{text-align:center;max-width:760px;margin:0 auto 48px}
.section-title{font-size:clamp(22px,3vw,32px);color:var(--primary-dark);letter-spacing:.5px;margin-bottom:14px}
.section-subtitle{font-size:15px;color:var(--text-light)}
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.flex{display:flex;align-items:center;gap:16px}
.flex-between{display:flex;align-items:center;justify-content:space-between;gap:16px}
.card{background:#fff;border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;border:1px solid var(--border)}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(18,41,77,.14)}
.card-icon{font-size:22px;color:var(--accent);font-weight:700;margin-bottom:14px;letter-spacing:1px}
.card-title{font-size:18px;color:var(--primary-dark);margin-bottom:10px}
.card-text{font-size:14.5px;color:var(--text-light)}
.card-body{margin-top:12px}
.btn{display:inline-block;padding:13px 30px;border-radius:var(--radius);font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .25s;text-align:center}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:8px 18px;font-size:13.5px}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(6px);border-bottom:1px solid var(--border);transition:box-shadow .3s}
.nav.scrolled{box-shadow:var(--shadow)}
.nav-inner{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.nav-logo{font-size:20px;font-weight:700;color:var(--primary-dark);letter-spacing:1px}
.nav-logo span{color:var(--accent)}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-link{font-size:15px;color:var(--text-light);transition:color .2s;position:relative}
.nav-link:hover{color:var(--primary)}
.nav-toggle{display:none;background:none;border:none;font-size:22px;color:var(--primary-dark);cursor:pointer;line-height:1}
.nav-cta{display:flex;align-items:center;gap:12px}
.hero{padding:150px 0 80px;background:linear-gradient(160deg,#f4f6fa 0%,#e8edf6 60%,#ffffff 100%);position:relative;overflow:hidden}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;text-align:center}
.hero-title{font-size:clamp(28px,5vw,48px);color:var(--primary-dark);line-height:1.3;margin-bottom:20px;letter-spacing:1px}
.hero-subtitle{font-size:clamp(15px,2vw,18px);color:var(--text-light);max-width:760px;margin:0 auto 34px}
.hero-actions{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:900px;margin:0 auto}
.hero-stat{background:#fff;border-radius:var(--radius);padding:22px 12px;border:1px solid var(--border);box-shadow:var(--shadow)}
.hero-stat-num{font-size:26px;font-weight:700;color:var(--primary);letter-spacing:1px}
.hero-stat-label{font-size:13px;color:var(--text-light);margin-top:6px}
.timeline{position:relative;padding-left:28px;margin-top:10px}
.timeline:before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--border)}
.timeline-item{position:relative;padding-bottom:30px}
.timeline-dot{position:absolute;left:-27px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--accent);border:2px solid #fff;box-shadow:0 0 0 2px var(--border)}
.timeline-content{}
.timeline-date{font-size:13px;color:var(--accent);font-weight:600;letter-spacing:.5px}
.timeline-title{font-size:17px;color:var(--primary-dark);margin:4px 0 6px}
.timeline-text{font-size:14.5px;color:var(--text-light)}
.news-list{display:flex;flex-direction:column;gap:22px}
.news-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .3s}
.news-item:hover{transform:translateY(-4px)}
.news-title{font-size:18px;color:var(--primary-dark);margin-bottom:8px}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-light);margin-bottom:10px}
.news-date{}
.news-category{background:var(--bg-alt);color:var(--primary);border-radius:20px;padding:2px 12px;font-size:12.5px}
.news-summary{font-size:14.5px;color:var(--text-light)}
.news-body{font-size:14.5px;color:var(--text-light);margin-top:12px}
.news-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{background:var(--bg-alt);border:1px solid var(--border);color:var(--text-light);border-radius:20px;padding:3px 12px;font-size:12.5px}
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow)}
.faq-question{font-size:16.5px;color:var(--primary-dark);font-weight:600;margin-bottom:10px}
.faq-answer{font-size:14.5px;color:var(--text-light)}
.form-group{margin-bottom:20px}
.form-label{display:block;font-size:14px;color:var(--text);margin-bottom:8px;font-weight:600}
.form-input,.form-select,.form-textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:14.5px;color:var(--text);background:#fff;font-family:inherit;outline:none;transition:border-color .2s}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary-light)}
.form-textarea{min-height:130px;resize:vertical}
.form-submit{display:inline-block;padding:13px 34px;border-radius:var(--radius);background:var(--primary);color:#fff;font-size:15px;font-weight:600;border:none;cursor:pointer;transition:background .25s}
.form-submit:hover{background:var(--primary-dark)}
.form-tip{font-size:13px;color:var(--text-light);margin-top:10px}
.stat-item{text-align:center;padding:20px 10px}
.stat-number{font-size:30px;font-weight:700;color:var(--primary)}
.stat-label{font-size:13.5px;color:var(--text-light);margin-top:6px}
.progress{height:10px;background:var(--bg-alt);border-radius:20px;overflow:hidden}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-light));border-radius:20px}
.bar-chart{display:flex;align-items:flex-end;gap:18px;height:220px;padding:10px 0}
.bar-item{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%}
.bar-fill{width:100%;background:linear-gradient(180deg,var(--primary-light),var(--primary));border-radius:8px 8px 0 0}
.bar-label{font-size:12.5px;color:var(--text-light);margin-top:8px}
.badge{display:inline-block;background:var(--bg-alt);color:var(--primary);border:1px solid var(--border);border-radius:20px;padding:3px 12px;font-size:12.5px}
.customer-card,.case-card,.honor-card,.review-card,.benefit-card,.region-card,.support-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .3s}
.customer-card:hover,.case-card:hover,.honor-card:hover,.review-card:hover,.benefit-card:hover,.region-card:hover,.support-card:hover{transform:translateY(-4px)}
.partner-logo{display:flex;align-items:center;justify-content:center;height:78px;background:#fff;border:1px dashed var(--border);border-radius:var(--radius);color:var(--text-light);font-size:13.5px}
.step-list{display:flex;flex-direction:column;gap:20px}
.step-item{display:flex;gap:18px;align-items:flex-start}
.step-number{flex-shrink:0;width:38px;height:38px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px}
.footer{background:var(--primary-dark);color:#cdd6e5;padding:60px 0 24px}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:34px;max-width:1200px;margin:0 auto;padding:0 20px}
.footer-col{}
.footer-title{font-size:16px;color:#fff;margin-bottom:16px;font-weight:600}
.footer-link{display:block;font-size:14px;color:#aeb9cc;margin-bottom:10px;transition:color .2s}
.footer-link:hover{color:#fff}
.footer-info{font-size:14px;color:#aeb9cc;margin-bottom:10px;line-height:1.7}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;max-width:1200px;margin-left:auto;margin-right:auto;padding-left:20px;padding-right:20px;font-size:13px;color:#8f9cb5;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
@media (max-width:1200px){
  .container{padding:0 18px}
}
@media (max-width:992px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .section{padding:58px 0}
  .nav-list{display:none}
  .nav-toggle{display:block}
  .nav-cta .btn{display:none}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero{padding:120px 0 60px}
  .footer-inner{grid-template-columns:1fr}
}
@media (max-width:480px){
  .hero-stats{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
}