:root{
  --primary:#1a56db;
  --primary-dark:#1339a0;
  --primary-light:#e8efff;
  --accent:#f59e0b;
  --text:#1f2937;
  --text-light:#6b7280;
  --bg:#ffffff;
  --bg-alt:#f5f7fb;
  --border:#e5e7eb;
  --shadow:0 4px 16px rgba(17,24,39,.08);
  --radius:12px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,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;max-width:760px;margin:0 auto 48px}
.section-title{font-size:32px;font-weight:700;letter-spacing:.5px;color:var(--text);margin-bottom:14px}
.section-subtitle{font-size:16px;color:var(--text-light)}
.grid{display:grid;gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.flex{display:flex;align-items:center}
.flex-between{display:flex;align-items:center;justify-content:space-between}
.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 10px 28px rgba(17,24,39,.14)}
.card-icon{width:48px;height:48px;border-radius:10px;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:700;margin-bottom:10px;color:var(--text)}
.card-text{font-size:15px;color:var(--text-light)}
.card-body{margin-top:14px}
.btn{display:inline-block;padding:12px 26px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;border:2px solid transparent;transition:all .25s;text-align:center}
.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);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-light)}
.btn-sm{padding:8px 16px;font-size:14px}
.nav{position:fixed;top:0;left:0;width:100%;background:#fff;z-index:1000;transition:box-shadow .3s;border-bottom:1px solid var(--border)}
.nav.scrolled{box-shadow:0 4px 20px rgba(17,24,39,.1)}
.nav-inner{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{font-size:22px;font-weight:800;color:var(--primary);letter-spacing:1px}
.nav-logo span{color:var(--accent)}
.nav-list{display:flex;gap:28px}
.nav-link{font-size:15px;color:var(--text);font-weight:500;transition:color .2s}
.nav-link:hover{color:var(--primary)}
.nav-toggle{display:none;background:none;border:none;font-size:26px;color:var(--text);cursor:pointer}
.nav-cta{padding:9px 20px;background:var(--primary);color:#fff;border-radius:8px;font-size:14px;font-weight:600}
.nav-cta:hover{background:var(--primary-dark)}
.hero{padding:140px 0 80px;background:linear-gradient(135deg,#eef3ff 0%,#f8fafc 60%,#fff 100%);position:relative;overflow:hidden}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;text-align:center}
.hero-title{font-size:46px;font-weight:800;line-height:1.25;color:var(--text);margin-bottom:20px;letter-spacing:.5px}
.hero-title span{color:var(--primary)}
.hero-subtitle{font-size:18px;color:var(--text-light);max-width:760px;margin:0 auto 34px}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;max-width:900px;margin:0 auto}
.hero-stat{background:#fff;border-radius:var(--radius);padding:22px 14px;box-shadow:var(--shadow);border:1px solid var(--border)}
.hero-stat-num{font-size:28px;font-weight:800;color:var(--primary);margin-bottom:6px}
.hero-stat-label{font-size:14px;color:var(--text-light)}
.timeline{position:relative;padding-left:30px}
.timeline-item{position:relative;padding-bottom:32px}
.timeline-dot{position:absolute;left:-30px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px var(--primary-light)}
.timeline-content{padding-left:6px}
.timeline-date{font-size:13px;color:var(--text-light);margin-bottom:4px}
.timeline-title{font-size:17px;font-weight:700;margin-bottom:6px}
.timeline-text{font-size:15px;color:var(--text-light)}
.news-list{display:flex;flex-direction:column;gap:20px}
.news-item{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.news-title{font-size:18px;font-weight:700;margin-bottom:8px}
.news-meta{display:flex;gap:14px;align-items:center;margin-bottom:10px}
.news-date{font-size:13px;color:var(--text-light)}
.news-category{font-size:12px;background:var(--primary-light);color:var(--primary);padding:2px 10px;border-radius:20px}
.news-summary{font-size:15px;color:var(--text-light);margin-bottom:12px}
.news-body{font-size:15px;color:var(--text-light)}
.news-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.tag{font-size:12px;background:var(--bg-alt);color:var(--text-light);padding:3px 10px;border-radius:20px;border:1px solid var(--border)}
.faq-list{display:flex;flex-direction:column;gap:16px;max-width:860px;margin:0 auto}
.faq-item{background:#fff;border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.faq-question{font-size:17px;font-weight:700;margin-bottom:10px;color:var(--text)}
.faq-answer{font-size:15px;color:var(--text-light)}
.form-group{margin-bottom:20px}
.form-label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;color:var(--text)}
.form-input,.form-select,.form-textarea{width:100%;padding:12px 14px;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{width:100%;padding:14px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:background .25s}
.form-submit:hover{background:var(--primary-dark)}
.form-tip{font-size:13px;color:var(--text-light);margin-top:8px}
.stat-item{text-align:center;padding:20px}
.stat-number{font-size:34px;font-weight:800;color:var(--primary);margin-bottom:6px}
.stat-label{font-size:14px;color:var(--text-light)}
.progress{height:10px;background:var(--bg-alt);border-radius:20px;overflow:hidden;margin-bottom:18px}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:20px}
.bar-chart{display:flex;align-items:flex-end;gap:20px;height:240px;padding:20px 0}
.bar-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%}
.bar-fill{width:100%;max-width:60px;background:linear-gradient(180deg,var(--primary),var(--primary-dark));border-radius:8px 8px 0 0}
.bar-label{font-size:13px;color:var(--text-light);margin-top:10px;text-align:center}
.badge{display:inline-block;font-size:12px;padding:3px 10px;background:var(--primary-light);color:var(--primary);border-radius:20px;font-weight:600}
.customer-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border);text-align:center}
.case-card{background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);border:1px solid var(--border)}
.honor-card{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);border:1px solid var(--border);text-align:center}
.partner-logo{height:70px;display:flex;align-items:center;justify-content:center;background:var(--bg-alt);border-radius:10px;color:var(--text-light);font-size:14px;border:1px dashed var(--border)}
.review-card{background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);border:1px solid var(--border)}
.benefit-card{background:#fff;border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);border:1px solid var(--border)}
.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:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
.region-card{background:#fff;border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);border:1px solid var(--border);text-align:center}
.support-card{background:#fff;border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);border:1px solid var(--border)}
.footer{background:#111827;color:#d1d5db;padding:60px 0 0}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 20px 40px;display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:32px}
.footer-col{font-size:14px}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-link{display:block;color:#9ca3af;margin-bottom:10px;transition:color .2s}
.footer-link:hover{color:#fff}
.footer-info{font-size:14px;color:#9ca3af;line-height:2}
.footer-bottom{border-top:1px solid #1f2937;padding:20px;text-align:center;font-size:13px;color:#6b7280}
@media (max-width:1200px){
  .container,.nav-inner,.hero-inner,.footer-inner{padding-left:24px;padding-right:24px}
}
@media (max-width:992px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-title{font-size:38px}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section{padding:56px 0}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .nav-list{position:absolute;top:100%;left:0;width:100%;background:#fff;flex-direction:column;gap:0;padding:10px 0;display:none;border-bottom:1px solid var(--border);box-shadow:0 8px 20px rgba(17,24,39,.08)}
  .nav-list.active{display:flex}
  .nav-link{display:block;padding:12px 24px}
  .nav-toggle{display:block}
  .nav-cta{display:none}
  .hero{padding:120px 0 60px}
  .hero-title{font-size:30px}
  .hero-subtitle{font-size:16px}
  .section-title{font-size:26px}
  .footer-inner{grid-template-columns:1fr}
}
@media (max-width:480px){
  .hero-title{font-size:25px}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-actions .btn{width:100%}
  .hero-stats{grid-template-columns:1fr}
  .card{padding:22px}
}