:root{
  --primary:#1f4e79;
  --primary-dark:#153a5b;
  --primary-light:#e8f0f8;
  --accent:#e8894a;
  --text:#1e2530;
  --text-light:#5f6b7a;
  --bg:#ffffff;
  --bg-alt:#f5f8fb;
  --border:#e2e8f0;
  --shadow:0 4px 18px rgba(31,78,121,.08);
  --radius:12px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
}
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;margin-bottom:52px;}
.section-title{font-size:32px;font-weight:700;color:var(--primary-dark);letter-spacing:.5px;}
.section-subtitle{margin-top:14px;font-size:16px;color:var(--text-light);max-width:720px;margin-left:auto;margin-right:auto;}
.grid{display:grid;gap:26px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;}
.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);
  border:1px solid var(--border);
  transition:transform .3s,box-shadow .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(31,78,121,.14);}
.card-icon{
  width:52px;height:52px;border-radius:12px;
  background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:700;margin-bottom:18px;
}
.card-title{font-size:19px;font-weight:600;color:var(--primary-dark);margin-bottom:12px;}
.card-text{font-size:15px;color:var(--text-light);}
.card-body{margin-top:6px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 30px;border-radius:999px;font-size:16px;font-weight:600;
  border:2px solid transparent;cursor:pointer;transition:all .25s;
}
.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-light);}
.btn-sm{padding:8px 18px;font-size:14px;}
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s;
}
.nav.scrolled{box-shadow:0 4px 16px rgba(31,78,121,.1);border-bottom-color:var(--border);}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;height:70px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-logo{font-size:21px;font-weight:700;color:var(--primary-dark);letter-spacing:1px;}
.nav-logo span{color:var(--accent);}
.nav-list{display:flex;align-items:center;gap:30px;}
.nav-link{font-size:15px;color:var(--text);transition:color .2s;}
.nav-link:hover{color:var(--primary);}
.nav-toggle{
  display:none;background:none;border:none;font-size:24px;
  color:var(--primary-dark);cursor:pointer;padding:6px;
}
.nav-cta{display:flex;align-items:center;gap:12px;}
.hero{
  padding:150px 0 90px;
  background:linear-gradient(160deg,#eef4fa 0%,#f8fbfe 55%,#ffffff 100%);
}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;text-align:center;}
.hero-title{font-size:46px;font-weight:800;color:var(--primary-dark);line-height:1.3;letter-spacing:1px;}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-subtitle{margin-top:22px;font-size:18px;color:var(--text-light);max-width:760px;margin-left:auto;margin-right:auto;}
.hero-actions{margin-top:36px;display:flex;justify-content:center;gap:16px;flex-wrap:wrap;}
.hero-stats{
  margin-top:60px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  background:#fff;border-radius:var(--radius);padding:34px 20px;
  box-shadow:var(--shadow);border:1px solid var(--border);
}
.hero-stat{text-align:center;}
.hero-stat-num{font-size:30px;font-weight:800;color:var(--primary);}
.hero-stat-label{font-size:14px;color:var(--text-light);margin-top:6px;}
.timeline{position:relative;padding-left:28px;border-left:2px solid var(--border);}
.timeline-item{position:relative;padding-bottom:30px;}
.timeline-dot{
  position:absolute;left:-37px;top:6px;width:14px;height:14px;border-radius:50%;
  background:var(--primary);border:3px solid #fff;box-shadow:0 0 0 2px var(--primary-light);
}
.timeline-content{background:#fff;border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);border:1px solid var(--border);}
.timeline-date{font-size:13px;color:var(--accent);font-weight:600;}
.timeline-title{font-size:17px;font-weight:600;color:var(--primary-dark);margin:6px 0 8px;}
.timeline-text{font-size:15px;color:var(--text-light);}
.news-list{display:grid;gap:22px;}
.news-item{
  background:#fff;border-radius:var(--radius);padding:24px 26px;
  box-shadow:var(--shadow);border:1px solid var(--border);transition:transform .3s,box-shadow .3s;
}
.news-item:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(31,78,121,.13);}
.news-title{font-size:18px;font-weight:600;color:var(--primary-dark);}
.news-meta{margin:10px 0 12px;}
.news-date{font-size:13px;color:var(--text-light);margin-right:10px;}
.news-category{
  display:inline-block;font-size:12px;padding:2px 12px;border-radius:999px;
  background:var(--primary-light);color:var(--primary);font-weight:600;
}
.news-summary{font-size:15px;color:var(--text-light);}
.news-body{margin-top:10px;font-size:15px;color:var(--text-light);}
.news-tags{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  display:inline-block;font-size:12px;padding:3px 12px;border-radius:6px;
  background:var(--bg-alt);color:var(--text-light);border:1px solid var(--border);
}
.faq-list{display:grid;gap:16px;max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border-radius:var(--radius);padding:22px 26px;
  box-shadow:var(--shadow);border:1px solid var(--border);
}
.faq-question{font-size:17px;font-weight:600;color:var(--primary-dark);margin-bottom:10px;}
.faq-answer{font-size:15px;color:var(--text-light);}
.form-group{margin-bottom:20px;}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px;}
.form-input,.form-select,.form-textarea{
  width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:8px;
  font-size:15px;font-family:inherit;color:var(--text);background:#fff;transition:border-color .2s;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary);}
.form-textarea{min-height:120px;resize:vertical;}
.form-submit{margin-top:6px;}
.form-tip{font-size:13px;color:var(--text-light);margin-top:12px;}
.stat-item{text-align:center;padding:20px 10px;}
.stat-number{font-size:32px;font-weight:800;color:var(--primary);}
.stat-label{font-size:14px;color:var(--text-light);margin-top:6px;}
.progress{height:10px;background:var(--bg-alt);border-radius:999px;overflow:hidden;}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:999px;}
.bar-chart{display:flex;align-items:flex-end;gap:20px;height:200px;padding:0 8px;}
.bar-item{flex:1;display:flex;flex-direction:column;justify-content:flex-end;height:100%;text-align:center;}
.bar-fill{background:linear-gradient(180deg,var(--primary),var(--primary-dark));border-radius:8px 8px 0 0;width:100%;}
.bar-label{font-size:13px;color:var(--text-light);margin-top:10px;}
.badge{
  display:inline-block;font-size:13px;padding:4px 14px;border-radius:999px;
  background:var(--accent);color:#fff;font-weight:600;
}
.customer-card,.case-card,.honor-card,.review-card,.benefit-card,.region-card,.support-card{
  background:#fff;border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow);border:1px solid var(--border);
  transition:transform .3s,box-shadow .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);box-shadow:0 12px 26px rgba(31,78,121,.13);}
.partner-logo{
  height:84px;display:flex;align-items:center;justify-content:center;
  background:#fff;border:1px dashed var(--border);border-radius:var(--radius);
  color:var(--text-light);font-size:14px;
}
.step-list{display:grid;gap:22px;}
.step-item{background:#fff;border-radius:var(--radius);padding:24px 26px;box-shadow:var(--shadow);border:1px solid var(--border);position:relative;}
.step-number{
  display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;
  font-size:15px;font-weight:700;margin-bottom:14px;
}
.footer{background:#132a41;color:#c4d2e0;padding:60px 0 26px;}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:36px;}
.footer-col{font-size:14px;}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-link{display:block;color:#a9bcd0;margin-bottom:10px;transition:color .2s;}
.footer-link:hover{color:#fff;}
.footer-info{font-size:14px;line-height:2;color:#a9bcd0;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  text-align:center;font-size:13px;color:#8ea2b8;
}
@media(max-width:1200px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:992px){
  .hero-title{font-size:38px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;}
}
@media(max-width:768px){
  .section{padding:60px 0;}
  .section-title{font-size:26px;}
  .hero{padding:120px 0 70px;}
  .hero-title{font-size:30px;}
  .hero-subtitle{font-size:16px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .nav-list{
    display:none;position:absolute;top:70px;left:0;right:0;
    flex-direction:column;gap:0;background:#fff;padding:12px 20px;
    box-shadow:0 10px 24px rgba(31,78,121,.12);
  }
  .nav-list.active{display:flex;}
  .nav-list li{width:100%;}
  .nav-link{display:block;padding:14px 0;border-bottom:1px solid var(--border);}
  .nav-toggle{display:block;}
  .nav-cta .btn{display:none;}
}
@media(max-width:480px){
  .hero-title{font-size:25px;}
  .hero-stats{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .footer-inner{grid-template-columns:1fr;}
  .bar-chart{gap:10px;}
}