:root{
  --primary:#1f5f5b;
  --primary-dark:#14423f;
  --primary-light:#3d8b85;
  --accent:#c9772e;
  --text:#22302f;
  --text-light:#5c6d6b;
  --bg:#ffffff;
  --bg-alt:#f2f6f5;
  --border:#dde6e4;
  --shadow:0 6px 20px rgba(20,66,63,.08);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;}
a:hover{color:var(--primary);}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}

.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:32px;line-height:1.35;font-weight:700;color:var(--primary-dark);letter-spacing:.5px;}
.section-subtitle{margin-top:14px;font-size:16px;color:var(--text-light);}

.grid{display:grid;gap:24px;}
.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;flex-wrap:wrap;align-items:center;}
.flex-between{display:flex;justify-content:space-between;align-items:center;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, box-shadow .3s, border-color .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 32px rgba(20,66,63,.14);border-color:var(--primary-light);}
.card-icon{
  width:52px;height:52px;line-height:52px;text-align:center;
  border-radius:12px;background:rgba(31,95,91,.1);color:var(--primary);
  font-size:22px;font-weight:700;margin-bottom:18px;
}
.card-title{font-size:18px;font-weight:700;color:var(--primary-dark);margin-bottom:10px;}
.card-text{font-size:15px;color:var(--text-light);line-height:1.8;}
.card-body{margin-top:14px;}

.btn{
  display:inline-block;padding:13px 30px;border-radius:40px;
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:all .3s;text-align:center;cursor:pointer;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary);}
.btn-outline:hover{background:var(--primary);color:#fff;transform:translateY(-2px);}
.btn-sm{padding:9px 20px;font-size:14px;}

.nav{
  position:fixed;top:0;left:0;width:100%;z-index:1000;
  background:rgba(255,255,255,.94);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);transition:box-shadow .3s;
}
.nav.scrolled{box-shadow:0 4px 18px rgba(20,66,63,.12);}
.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:22px;font-weight:800;color:var(--primary-dark);letter-spacing:1px;}
.nav-logo span{color:var(--accent);}
.nav-list{display:flex;gap:30px;align-items:center;}
.nav-link{font-size:15px;font-weight:500;color:var(--text);position:relative;padding:6px 0;transition:color .25s;}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-cta{padding:10px 22px;font-size:14px;}
.nav-toggle{
  display:none;background:none;border:none;width:42px;height:42px;
  border-radius:8px;position:relative;
}
.nav-toggle::before,.nav-toggle::after,.nav-toggle i{
  content:"";position:absolute;left:11px;width:20px;height:2px;
  background:var(--primary-dark);border-radius:2px;transition:.3s;
}
.nav-toggle::before{top:14px;}
.nav-toggle i{top:20px;display:block;}
.nav-toggle::after{top:26px;}

.hero{
  padding:150px 0 90px;
  background:
    radial-gradient(circle at 85% 15%, rgba(201,119,46,.14), transparent 45%),
    radial-gradient(circle at 10% 85%, rgba(31,95,91,.16), transparent 50%),
    linear-gradient(160deg,#f4f9f8 0%,#eaf2f1 100%);
  border-bottom:1px solid var(--border);
}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;}
.hero-title{
  font-size:48px;line-height:1.28;font-weight:800;color:var(--primary-dark);
  max-width:820px;letter-spacing:1px;
}
.hero-title em{font-style:normal;color:var(--accent);}
.hero-subtitle{
  margin-top:22px;max-width:700px;font-size:18px;color:var(--text-light);line-height:1.9;
}
.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:32px;font-weight:800;color:var(--primary);line-height:1.2;}
.hero-stat-label{font-size:14px;color:var(--text-light);margin-top:6px;}

.timeline{position:relative;margin-top:10px;}
.timeline-item{position:relative;padding-left:36px;padding-bottom:32px;border-left:2px solid var(--border);}
.timeline-item:last-child{border-left-color:transparent;padding-bottom:0;}
.timeline-dot{
  position:absolute;left:-8px;top:4px;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{padding-left:4px;}
.timeline-date{font-size:13px;font-weight:600;color:var(--accent);letter-spacing:.5px;}
.timeline-title{font-size:17px;font-weight:700;color:var(--primary-dark);margin:6px 0 8px;}
.timeline-text{font-size:15px;color:var(--text-light);line-height:1.8;}

.news-list{display:flex;flex-direction:column;gap:22px;}
.news-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;
}
.news-item:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(20,66,63,.12);}
.news-title{font-size:19px;font-weight:700;color:var(--primary-dark);margin-bottom:10px;}
.news-meta{display:flex;gap:14px;align-items:center;font-size:13px;color:var(--text-light);margin-bottom:12px;flex-wrap:wrap;}
.news-date{color:var(--text-light);}
.news-category{
  background:rgba(201,119,46,.12);color:var(--accent);
  padding:3px 12px;border-radius:20px;font-weight:600;
}
.news-summary{font-size:15px;color:var(--text-light);line-height:1.8;}
.news-body{font-size:15px;color:var(--text-light);line-height:1.85;margin-top:12px;}
.news-tags{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px;}
.tag{
  font-size:13px;padding:4px 12px;border-radius:20px;
  background:var(--bg-alt);color:var(--primary);border:1px solid var(--border);
}

.faq-list{display:flex;flex-direction:column;gap:16px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
}
.faq-question{font-size:17px;font-weight:700;color:var(--primary-dark);margin-bottom:10px;}
.faq-answer{font-size:15px;color:var(--text-light);line-height:1.85;}

.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;font-size:15px;color:var(--text);
  background:#fff;border:1px solid var(--border);border-radius:10px;
  transition:border-color .25s,box-shadow .25s;font-family:inherit;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{
  outline:none;border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(31,95,91,.12);
}
.form-textarea{min-height:130px;resize:vertical;line-height:1.7;}
.form-submit{
  display:inline-block;padding:13px 34px;border-radius:40px;border:none;
  background:var(--primary);color:#fff;font-size:15px;font-weight:600;
  transition:all .3s;cursor:pointer;
}
.form-submit:hover{background:var(--primary-dark);transform:translateY(-2px);}
.form-tip{font-size:13px;color:var(--text-light);margin-top:10px;line-height:1.7;}

.stat-item{text-align:center;padding:20px 12px;}
.stat-number{font-size:34px;font-weight:800;color:var(--primary);line-height:1.2;}
.stat-label{font-size:14px;color:var(--text-light);margin-top:8px;}
.progress{height:10px;background:var(--bg-alt);border-radius:10px;overflow:hidden;margin-top:10px;}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-light));border-radius:10px;}
.bar-chart{display:flex;align-items:flex-end;gap:18px;height:220px;margin-top:24px;}
.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;transition:height .4s;}
.bar-label{font-size:13px;color:var(--text-light);margin-top:10px;}

.badge{
  display:inline-block;padding:4px 12px;border-radius:20px;
  font-size:12px;font-weight:600;background:rgba(31,95,91,.1);color:var(--primary);
}
.customer-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);transition:transform .3s;
}
.customer-card:hover{transform:translateY(-4px);}
.case-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);
}
.honor-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);text-align:center;
}
.partner-logo{
  display:flex;align-items:center;justify-content:center;
  height:80px;border:1px dashed var(--border);border-radius:var(--radius);
  color:var(--text-light);font-size:14px;background:#fff;
}
.review-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:26px;box-shadow:var(--shadow);
}
.benefit-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
}
.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;width:40px;height:40px;line-height:40px;text-align:center;
  border-radius:50%;background:var(--primary);color:#fff;font-weight:700;
}
.region-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
}
.support-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);
}

.footer{background:var(--primary-dark);color:#cfdedc;padding:64px 0 0;}
.footer-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
}
.footer-col{min-width:0;}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-link{display:block;font-size:14px;color:#b7c9c7;padding:5px 0;transition:color .25s;}
.footer-link:hover{color:#fff;}
.footer-info{font-size:14px;line-height:2;color:#b7c9c7;}
.footer-bottom{
  margin-top:48px;border-top:1px solid rgba(255,255,255,.14);
  padding:22px 20px;text-align:center;font-size:13px;color:#9fb5b2;
}

@media (max-width:1199px){
  .hero-title{font-size:42px;}
  .container{padding:0 24px;}
}
@media (max-width:991px){
  .section{padding:64px 0;}
  .hero{padding:130px 0 70px;}
  .hero-title{font-size:36px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;}
  .section-title{font-size:28px;}
}
@media (max-width:768px){
  .nav-list{
    position:absolute;top:70px;left:0;width:100%;
    flex-direction:column;gap:0;background:#fff;
    border-bottom:1px solid var(--border);
    max-height:0;overflow:hidden;transition:max-height .35s ease;
  }
  .nav-list.open{max-height:420px;}
  .nav-link{display:block;padding:14px 24px;border-bottom:1px solid var(--border);}
  .nav-link:hover::after{display:none;}
  .nav-toggle{display:block;}
  .nav-cta{display:none;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:24px;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .hero-title{font-size:30px;}
  .hero-subtitle{font-size:16px;}
  .hero-actions .btn{width:100%;}
  .footer-inner{grid-template-columns:1fr;}
  .bar-chart{height:180px;gap:10px;}
}
@media (max-width:480px){
  .section{padding:52px 0;}
  .hero{padding:110px 0 56px;}
  .hero-title{font-size:25px;letter-spacing:.5px;}
  .hero-stat-num{font-size:26px;}
  .section-title{font-size:23px;}
  .card,.news-item{padding:20px;}
  .btn{padding:12px 22px;}
}