:root{
  --primary:#1f6feb;
  --primary-dark:#1650b3;
  --primary-light:#e8f0fe;
  --accent:#ff5a1f;
  --text:#1b1f24;
  --text-light:#5b6472;
  --bg:#ffffff;
  --bg-alt:#f5f7fa;
  --border:#e3e7ee;
  --shadow:0 4px 18px rgba(20,30,50,.08);
  --radius:14px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0 0 14px;line-height:1.3;}
p{margin:0 0 14px;}
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:820px;margin:0 auto 46px;}
.section-title{font-size:32px;font-weight:800;color:var(--text);letter-spacing:.5px;}
.section-subtitle{font-size:16px;color:var(--text-light);margin:0;}
.grid{display:grid;gap:26px;}
.grid-2{display:grid;gap:26px;grid-template-columns:repeat(2,1fr);}
.grid-3{display:grid;gap:26px;grid-template-columns:repeat(3,1fr);}
.grid-4{display:grid;gap:22px;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:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 30px rgba(20,30,50,.14);}
.card-icon{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:12px;background:var(--primary-light);color:var(--primary);font-size:24px;margin-bottom:16px;}
.card-title{font-size:19px;font-weight:700;margin-bottom:10px;}
.card-text{font-size:15px;color:var(--text-light);margin:0;}
.card-body{font-size:15px;color:var(--text-light);}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:999px;border:1px solid transparent;font-size:16px;font-weight:600;cursor:pointer;transition:all .25s;background:transparent;}
.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 18px;font-size:14px;}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s;}
.nav.scrolled{box-shadow:0 4px 20px rgba(20,30,50,.10);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{font-size:21px;font-weight:800;color:var(--primary);display:flex;align-items:center;gap:8px;letter-spacing:.5px;}
.nav-logo::before{content:"蛙";display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:9px;background:var(--primary);color:#fff;font-size:17px;font-weight:800;}
.nav-list{display:flex;align-items:center;gap:30px;}
.nav-link{font-size:15px;color:var(--text);font-weight:500;padding:6px 2px;border-bottom:2px solid transparent;transition:color .25s,border-color .25s;}
.nav-link:hover{color:var(--primary);border-bottom-color:var(--primary);}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:8px;width:42px;height:38px;cursor:pointer;color:var(--text);font-size:20px;}
.nav-cta{display:flex;align-items:center;gap:12px;}
.hero{padding:150px 0 90px;background:linear-gradient(160deg,#eaf2ff 0%,#ffffff 62%);position:relative;overflow:hidden;}
.hero::after{content:"";position:absolute;right:-120px;top:-60px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(31,111,235,.16),transparent 70%);pointer-events:none;}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.hero-title{font-size:46px;font-weight:800;letter-spacing:1px;max-width:800px;}
.hero-subtitle{font-size:18px;color:var(--text-light);max-width:660px;margin:18px 0 32px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:56px;}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;max-width:900px;}
.hero-stat{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow);}
.hero-stat-num{font-size:28px;font-weight:800;color:var(--primary);display:block;line-height:1.2;}
.hero-stat-label{font-size:14px;color:var(--text-light);}
.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--border);}
.timeline-item{position:relative;padding:0 0 28px 20px;}
.timeline-dot{position:absolute;left:-26px;top:5px;width:14px;height:14px;border-radius:50%;background:var(--primary);border:3px solid var(--primary-light);}
.timeline-content{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);}
.timeline-date{font-size:13px;color:var(--primary);font-weight:600;}
.timeline-title{font-size:17px;font-weight:700;margin:6px 0;}
.timeline-text{font-size:15px;color:var(--text-light);margin:0;}
.news-list{display:grid;gap:20px;}
.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;font-weight:700;margin:8px 0 10px;}
.news-meta{display:flex;align-items:center;gap:12px;}
.news-date{font-size:13px;color:var(--text-light);}
.news-category{font-size:12px;color:var(--primary);background:var(--primary-light);border-radius:999px;padding:3px 12px;}
.news-summary{font-size:15px;color:var(--text-light);margin:0;}
.news-body{font-size:15px;color:var(--text-light);}
.news-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{font-size:12px;color:var(--text-light);border:1px solid var(--border);border-radius:999px;padding:3px 12px;background:var(--bg-alt);}
.faq-list{display:grid;gap:16px;}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;box-shadow:var(--shadow);}
.faq-question{font-size:17px;font-weight:700;margin:0 0 10px;}
.faq-answer{font-size:15px;color:var(--text-light);margin:0;}
.form-group{margin-bottom:20px;display:flex;flex-direction:column;gap:8px;}
.form-label{font-size:14px;font-weight:600;}
.form-input,.form-select,.form-textarea{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:10px;font-size:15px;font-family:inherit;color:var(--text);background:#fff;outline:none;transition:border-color .25s,box-shadow .25s;}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-light);}
.form-textarea{min-height:130px;resize:vertical;}
.form-submit{margin-top:6px;}
.form-tip{font-size:13px;color:var(--text-light);}
.stat-item{text-align:center;padding:24px 16px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);}
.stat-number{font-size:30px;font-weight:800;color:var(--primary);display:block;}
.stat-label{font-size:14px;color:var(--text-light);}
.progress{height:10px;border-radius:999px;background:var(--primary-light);overflow:hidden;}
.progress-fill{height:100%;border-radius:999px;background:var(--primary);}
.bar-chart{display:flex;align-items:flex-end;gap:18px;height:220px;padding:10px 4px;}
.bar-item{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;gap:10px;}
.bar-fill{width:100%;border-radius:8px 8px 0 0;background:linear-gradient(180deg,var(--primary),var(--primary-dark));}
.bar-label{font-size:13px;color:var(--text-light);}
.badge{display:inline-flex;align-items:center;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600;background:var(--primary-light);color:var(--primary);}
.customer-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);}
.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:26px;box-shadow:var(--shadow);}
.step-list{display:grid;gap:20px;}
.step-item{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);}
.step-number{flex:0 0 auto;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: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:#111826;color:#c3cad6;padding:64px 0 26px;font-size:15px;}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:36px;}
.footer-col{display:flex;flex-direction:column;gap:10px;}
.footer-title{color:#fff;font-size:16px;font-weight:700;margin-bottom:6px;}
.footer-link{color:#c3cad6;font-size:14px;transition:color .25s;}
.footer-link:hover{color:#fff;}
.footer-bottom{max-width:1200px;margin:38px auto 0;padding:20px 20px 0;border-top:1px solid rgba(255,255,255,.12);font-size:13px;color:#8d97a8;text-align:center;}
.footer-info{font-size:14px;color:#c3cad6;line-height:1.9;}
@media(max-width:1200px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .hero-title{font-size:40px;}
}
@media(max-width:992px){
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;}
}
@media(max-width:768px){
  .section{padding:60px 0;}
  .hero{padding:120px 0 70px;}
  .hero-title{font-size:32px;}
  .hero-subtitle{font-size:16px;}
  .nav-list{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:flex-start;gap:0;padding:0 20px;max-height:0;overflow:hidden;transition:max-height .3s;border-bottom:1px solid var(--border);}
  .nav-list.open{max-height:340px;padding:12px 20px 20px;}
  .nav-list li{width:100%;border-bottom:1px solid var(--border);}
  .nav-link{display:block;padding:14px 0;}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center;}
  .nav-cta .btn{display:none;}
  .grid-3,.grid-2,.grid-4{grid-template-columns:1fr;}
  .section-title{font-size:26px;}
  .bar-chart{gap:10px;}
}
@media(max-width:480px){
  .hero-stats{grid-template-columns:1fr;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .footer-inner{grid-template-columns:1fr;}
  .section-title{font-size:23px;}
  .card{padding:22px;}
}