:root{
  --primary:#3b4df0;
  --primary-dark:#2a37b8;
  --primary-light:#e8eaff;
  --accent:#ff7a45;
  --text:#1e2233;
  --text-light:#5c6377;
  --bg:#ffffff;
  --bg-alt:#f5f6fb;
  --border:#e3e6f0;
  --shadow:0 4px 18px rgba(30,34,51,.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",system-ui,-apple-system,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
img,svg{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none;background:none}
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{text-align:center;max-width:760px;margin:0 auto 52px}
.section-title{font-size:32px;letter-spacing:.5px;margin-bottom:14px}
.section-subtitle{color:var(--text-light);font-size:16px}
.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;gap:16px;align-items:center}
.flex-between{display:flex;justify-content:space-between;align-items:center;gap:16px}

/* nav */
.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 var(--border);transition:box-shadow .3s,background .3s}
.nav.scrolled{box-shadow:0 4px 20px rgba(30,34,51,.1)}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 20px;height:68px;display:flex;align-items:center;justify-content:space-between}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:700;color:var(--primary)}
.nav-logo span{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:9px;background:var(--primary);color:#fff;font-size:15px}
.nav-list{display:flex;align-items:center;gap:26px}
.nav-link{font-size:15px;color:var(--text);position:relative;padding:6px 0;transition:color .25s}
.nav-link:hover{color:var(--primary)}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--primary);transition:width .25s}
.nav-link:hover::after{width:100%}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:9px 20px;border-radius:999px;background:var(--primary);color:#fff;font-size:14px;font-weight:600;transition:background .25s,transform .25s}
.nav-cta:hover{background:var(--primary-dark);transform:translateY(-2px)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle i{display:block;width:20px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.nav-toggle.active i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active i:nth-child(2){opacity:0}
.nav-toggle.active i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:999px;font-size:15px;font-weight:600;transition:transform .25s,box-shadow .25s,background .25s,color .25s;cursor:pointer}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 18px rgba(59,77,240,.28)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}
.btn-outline{border:2px solid var(--primary);color:var(--primary);background:transparent}
.btn-outline:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-sm{padding:8px 18px;font-size:13px}

/* hero */
.hero{padding:150px 0 90px;background:linear-gradient(160deg,#eef0ff 0%,#f9faff 55%,#ffffff 100%);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-140px;right:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(59,77,240,.16),transparent 70%)}
.hero::after{content:"";position:absolute;bottom:-160px;left:-100px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(255,122,69,.14),transparent 70%)}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;text-align:center}
.hero-title{font-size:48px;letter-spacing:1px;margin-bottom:22px}
.hero-title em{font-style:normal;color:var(--primary);position:relative}
.hero-subtitle{font-size:18px;color:var(--text-light);max-width:720px;margin:0 auto 36px}
.hero-actions{display:flex;justify-content:center;gap:18px;flex-wrap:wrap;margin-bottom:56px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:920px;margin:0 auto}
.hero-stat{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 14px;box-shadow:var(--shadow)}
.hero-stat-num{font-size:30px;font-weight:800;color:var(--primary);line-height:1.2}
.hero-stat-label{font-size:13px;color:var(--text-light);margin-top:6px}

/* cards */
.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 28px rgba(30,34,51,.12)}
.card-icon{width:52px;height:52px;border-radius:13px;background:var(--primary-light);color:var(--primary);display:inline-flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;margin-bottom:18px}
.card-title{font-size:18px;margin-bottom:10px}
.card-text{font-size:14.5px;color:var(--text-light)}
.card-body{margin-top:14px}

/* misc components reserved for later sections */
.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:4px;width:16px;height:16px;border-radius:50%;background:var(--primary);border:3px solid var(--primary-light)}
.timeline-content{padding-left:6px}
.timeline-date{font-size:13px;color:var(--accent);font-weight:600;margin-bottom:4px}
.timeline-title{font-size:16px;margin-bottom:6px}
.timeline-text{font-size:14px;color:var(--text-light)}
.news-list{display:grid;gap:18px}
.news-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:transform .3s}
.news-item:hover{transform:translateY(-3px)}
.news-title{font-size:17px;margin-bottom:8px}
.news-meta{display:flex;gap:12px;align-items:center;font-size:13px;color:var(--text-light);margin-bottom:8px}
.news-date{color:var(--text-light)}
.news-category{background:var(--primary-light);color:var(--primary);padding:2px 10px;border-radius:999px;font-size:12px;font-weight:600}
.news-summary{font-size:14.5px;color:var(--text-light)}
.news-body{font-size:14.5px;color:var(--text-light);margin-top:10px}
.news-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.tag{font-size:12px;color:var(--text-light);border:1px solid var(--border);border-radius:999px;padding:3px 10px}
.faq-list{display:grid;gap:14px}
.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:600;margin-bottom:8px}
.faq-answer{font-size:14.5px;color:var(--text-light)}
.form-group{margin-bottom:18px}
.form-label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.form-input,.form-select,.form-textarea{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:10px;font-size:14.5px;color:var(--text);background:#fff;transition:border-color .25s,box-shadow .25s}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(59,77,240,.12)}
.form-textarea{min-height:120px;resize:vertical}
.form-submit{display:inline-flex;align-items:center;justify-content:center;padding:12px 34px;border-radius:999px;background:var(--primary);color:#fff;font-weight:600;font-size:15px;transition:background .25s,transform .25s}
.form-submit:hover{background:var(--primary-dark);transform:translateY(-2px)}
.form-tip{font-size:12.5px;color:var(--text-light);margin-top:8px}
.stat-item{text-align:center;padding:18px}
.stat-number{font-size:34px;font-weight:800;color:var(--primary)}
.stat-label{font-size:14px;color:var(--text-light);margin-top:6px}
.progress{height:9px;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:16px;height:200px;padding:10px 0}
.bar-item{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;gap:8px}
.bar-fill{width:100%;background:linear-gradient(180deg,var(--primary),var(--primary-dark));border-radius:8px 8px 0 0;min-height:8px}
.bar-label{font-size:12px;color:var(--text-light)}
.badge{display:inline-block;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px}
.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,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 28px rgba(30,34,51,.12)}
.partner-logo{display:flex;align-items:center;justify-content:center;height:78px;border:1px dashed var(--border);border-radius:var(--radius);color:var(--text-light);font-size:13px;background:#fff}
.step-list{display:grid;gap:20px;counter-reset:step}
.step-item{display:flex;gap:18px;align-items:flex-start;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.step-number{flex:none;width:38px;height:38px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}

/* footer reserved */
.footer{background:#171a2b;color:#c8cbd9;padding:64px 0 0}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:34px;max-width:1200px;margin:0 auto;padding:0 20px 48px}
.footer-col{min-width:0}
.footer-title{font-size:16px;color:#fff;margin-bottom:16px}
.footer-link{display:block;font-size:14px;color:#a9aec4;margin-bottom:10px;transition:color .25s}
.footer-link:hover{color:#fff}
.footer-info{font-size:14px;line-height:1.9;color:#a9aec4}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px;text-align:center;font-size:13px;color:#8b90a8}

@media (max-width:1200px){
  .hero-title{font-size:42px}
}
@media (max-width:992px){
  .section{padding:64px 0}
  .hero{padding:130px 0 72px}
  .hero-title{font-size:36px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .nav-list{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:12px 20px 20px;border-bottom:1px solid var(--border);box-shadow:0 14px 24px rgba(30,34,51,.1);transform:translateY(-140%);transition:transform .35s;opacity:0;pointer-events:none}
  .nav-list.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-link{padding:12px 0;border-bottom:1px solid var(--bg-alt)}
  .nav-cta{display:none}
  .nav-toggle{display:flex}
  .footer-inner{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
  .section{padding:52px 0}
  .section-header{margin-bottom:36px}
  .section-title{font-size:26px}
  .hero-title{font-size:30px;letter-spacing:0}
  .hero-subtitle{font-size:16px}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:center}
  .hero-actions .btn{width:100%;max-width:320px}
  .card{padding:22px}
  .footer-inner{grid-template-columns:1fr;gap:28px}
}
@media (max-width:480px){
  .hero{padding:112px 0 56px}
  .hero-title{font-size:25px}
  .hero-stat-num{font-size:24px}
  .hero-stats{grid-template-columns:1fr 1fr;gap:12px}
  .container{padding:0 16px}
  .btn{padding:12px 22px;font-size:14px}
}