:root{
  --primary:#2f6f75;
  --primary-dark:#21545a;
  --primary-light:#e6f1f1;
  --accent:#c9603f;
  --text:#25302f;
  --text-light:#5d6b69;
  --bg:#fbfcfb;
  --bg-alt:#eef4f3;
  --border:#d8e2e0;
  --shadow:0 6px 18px rgba(33,84,90,.10);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",Helvetica,Arial,sans-serif;
  color:var(--text);background:var(--bg);line-height:1.75;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
h1,h2,h3,h4{line-height:1.35;font-weight:700;}

.container{max-width:1200px;margin:0 auto;padding:0 20px;}
.section{padding:80px 0;}
.section-alt{background:var(--bg-alt);}
.section-header{max-width:760px;margin:0 auto 48px;text-align:center;}
.section-title{font-size:clamp(22px,3vw,32px);color:var(--primary-dark);letter-spacing:.5px;}
.section-subtitle{margin-top:14px;color:var(--text-light);font-size:15px;}

.grid{display:grid;gap:24px;grid-template-columns:repeat(3,1fr);}
.grid-2{display:grid;gap:24px;grid-template-columns:repeat(2,1fr);}
.grid-3{display:grid;gap:24px;grid-template-columns:repeat(3,1fr);}
.grid-4{display:grid;gap:24px;grid-template-columns:repeat(4,1fr);}
.flex{display:flex;gap:16px;align-items:center;flex-wrap:wrap;}
.flex-between{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}

.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
  transition:transform .3s ease, box-shadow .3s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 26px rgba(33,84,90,.16);}
.card-icon{
  width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:var(--primary-light);color:var(--primary-dark);font-size:22px;font-weight:700;margin-bottom:18px;
}
.card-title{font-size:18px;color:var(--primary-dark);margin-bottom:10px;}
.card-text{font-size:14.5px;color:var(--text-light);}
.card-body{display:flex;flex-direction:column;gap:10px;}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:600;
  border:2px solid transparent;cursor:pointer;transition:all .25s ease;background:none;
}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);}
.btn-outline{background:transparent;color:var(--primary-dark);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:100;
  background:rgba(251,252,251,.94);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:box-shadow .3s ease, border-color .3s ease;
}
.nav.scrolled{box-shadow:0 4px 16px rgba(33,84,90,.12);border-bottom-color:var(--border);}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;height:68px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--primary-dark);letter-spacing:1px;}
.nav-logo::before{
  content:"91";display:inline-flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:10px;background:var(--primary);color:#fff;font-size:15px;font-weight:700;
}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-link{
  padding:8px 14px;border-radius:8px;font-size:15px;color:var(--text);transition:all .2s ease;
}
.nav-link:hover{background:var(--primary-light);color:var(--primary-dark);}
.nav-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;
  background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--primary-dark);border-radius:2px;}
.nav-cta{display:inline-flex;}

.hero{
  position:relative;padding:150px 0 90px;
  background:linear-gradient(165deg,#f2f8f7 0%,#e3efee 45%,#f7faf9 100%);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(47,111,117,.16),transparent 70%);
}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:2;}
.hero-title{
  font-size:clamp(28px,4.6vw,48px);color:var(--primary-dark);letter-spacing:1px;max-width:16em;
}
.hero-subtitle{
  margin-top:22px;font-size:clamp(15px,1.7vw,18px);color:var(--text-light);max-width:34em;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:36px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:64px;
  padding-top:36px;border-top:1px solid var(--border);
}
.hero-stat{text-align:left;}
.hero-stat-num{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--primary);}
.hero-stat-label{margin-top:6px;font-size:13.5px;color:var(--text-light);}

.timeline{position:relative;padding-left:34px;}
.timeline::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--border);}
.timeline-item{position:relative;padding-bottom:30px;}
.timeline-dot{
  position:absolute;left:-34px;top:5px;width:20px;height:20px;border-radius:50%;
  background:#fff;border:3px solid var(--primary);
}
.timeline-content{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;box-shadow:var(--shadow);}
.timeline-date{font-size:13px;color:var(--accent);font-weight:600;margin-bottom:6px;}
.timeline-title{font-size:16.5px;color:var(--primary-dark);margin-bottom:6px;}
.timeline-text{font-size:14px;color:var(--text-light);}

.news-list{display:flex;flex-direction:column;gap:18px;}
.news-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow);transition:transform .3s ease;}
.news-item:hover{transform:translateY(-3px);}
.news-title{font-size:17px;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;flex-wrap:wrap;}
.news-date{color:var(--text-light);}
.news-category{background:var(--primary-light);color:var(--primary-dark);padding:2px 10px;border-radius:999px;font-weight:600;}
.news-summary{font-size:14.5px;color:var(--text-light);}
.news-body{font-size:14.5px;color:var(--text);margin-top:10px;}
.news-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}
.tag{font-size:12.5px;padding:3px 10px;border-radius:999px;background:var(--bg-alt);color:var(--text-light);border:1px solid var(--border);}

.faq-list{display:flex;flex-direction:column;gap:14px;max-width:860px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px 24px;box-shadow:var(--shadow);}
.faq-question{font-size:16px;font-weight:700;color:var(--primary-dark);margin-bottom:8px;}
.faq-answer{font-size:14.5px;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 14px;border:1px solid var(--border);border-radius:10px;
  font-size:14.5px;font-family:inherit;color:var(--text);background:#fff;transition:border-color .2s ease;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary);}
.form-textarea{min-height:130px;resize:vertical;}
.form-submit{
  display:inline-flex;align-items:center;justify-content:center;padding:13px 34px;border:none;border-radius:999px;
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:background .25s ease;
}
.form-submit:hover{background:var(--primary-dark);}
.form-tip{font-size:12.5px;color:var(--text-light);margin-top:10px;}

.stat-item{text-align:center;padding:20px;}
.stat-number{font-size:clamp(24px,3vw,34px);font-weight:800;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: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:18px;height:200px;padding-top:12px;}
.bar-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:8px;}
.bar-fill{width:100%;background:var(--primary);border-radius:8px 8px 0 0;transition:height .4s ease;}
.bar-label{font-size:12.5px;color:var(--text-light);}

.badge{display:inline-block;padding:3px 12px;border-radius:999px;background:var(--accent);color:#fff;font-size:12.5px;font-weight:600;}
.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:24px;box-shadow:var(--shadow);transition:transform .3s ease;
}
.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:80px;border:1px dashed var(--border);
  border-radius:var(--radius);background:#fff;color:var(--text-light);font-size:13.5px;
}
.step-list{display:flex;flex-direction:column;gap:18px;}
.step-item{display:flex;gap:18px;align-items:flex-start;}
.step-number{
  flex:0 0 40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;
}

.footer{background:var(--primary-dark);color:#d6e6e5;padding:60px 0 0;}
.footer-inner{
  max-width:1200px;margin:0 auto;padding:0 20px 44px;
  display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:36px;
}
.footer-col{font-size:14px;}
.footer-title{font-size:16px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-link{display:block;color:#bfd8d6;margin-bottom:10px;font-size:14px;transition:color .2s ease;}
.footer-link:hover{color:#fff;}
.footer-info{font-size:13.5px;color:#bfd8d6;line-height:2;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px;text-align:center;
  font-size:13px;color:#9dbcb9;
}

@media (max-width:1199px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:992px){
  .section{padding:60px 0;}
  .grid,.grid-3{grid-template-columns:repeat(2,1fr);}
  .hero{padding:130px 0 70px;}
  .footer-inner{grid-template-columns:1fr 1fr;gap:28px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:24px;}
}
@media (max-width:768px){
  .nav-toggle{display:flex;}
  .nav-list{
    position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;
    padding:12px 20px 20px;gap:4px;border-bottom:1px solid var(--border);box-shadow:0 12px 20px rgba(33,84,90,.12);
    display:none;
  }
  .nav-list.open{display:flex;}
  .nav-link{padding:12px 10px;}
  .nav-cta{display:none;}
  .grid,.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:1fr 1fr;}
  .bar-chart{height:160px;gap:10px;}
}
@media (max-width:480px){
  body{font-size:15px;}
  .section{padding:48px 0;}
  .card{padding:22px;}
  .hero{padding:118px 0 56px;}
  .hero-actions .btn{width:100%;}
  .hero-stats{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;}
}