:root{
  --primary:#3b6fd4;
  --primary-dark:#2a55a8;
  --primary-light:#e8f0fd;
  --accent:#f08a3c;
  --text:#1f2733;
  --text-light:#5f6b7d;
  --bg:#ffffff;
  --bg-alt:#f5f8fd;
  --border:#e2e8f2;
  --shadow:0 6px 24px rgba(31,39,51,.08);
  --radius:14px;
}
*{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;
  -webkit-font-smoothing:antialiased;
}
ul{list-style:none;}
a{text-decoration:none;color:inherit;}
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{text-align:center;max-width:760px;margin:0 auto 48px;}
.section-title{font-size:clamp(24px,3vw,34px);color:var(--text);margin-bottom:14px;}
.section-subtitle{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;align-items:center;flex-wrap:wrap;}
.flex-between{display:flex;gap:16px;align-items:center;justify-content:space-between;flex-wrap:wrap;}
.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 12px 32px rgba(31,39,51,.12);}
.card-icon{width:52px;height:52px;border-radius:12px;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:700;margin-bottom:18px;}
.card-title{font-size:19px;margin-bottom:10px;}
.card-text{color:var(--text-light);font-size:15px;}
.card-body{margin-top:14px;color:var(--text-light);font-size:15px;}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;transition:all .25s;text-align:center;}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);}
.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:13px;}
/* 导航 */
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);transition:box-shadow .3s;}
.nav.scrolled{box-shadow:0 4px 20px rgba(31,39,51,.1);}
.nav-inner{max-width:1200px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.nav-logo{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:.5px;}
.nav-logo span{color:var(--accent);}
.nav-list{display:flex;gap:28px;align-items:center;}
.nav-link{font-size:15px;color:var(--text);position:relative;padding:4px 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-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--text);padding:4px 8px;}
.nav-cta{display:flex;align-items:center;gap:12px;}
.nav-cta .btn{padding:9px 20px;font-size:14px;}
/* Hero */
.hero{padding:150px 0 80px;background:linear-gradient(160deg,#eef4ff 0%,#ffffff 60%);position:relative;overflow:hidden;}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;text-align:center;}
.hero-title{font-size:clamp(28px,4.4vw,46px);color:var(--text);margin-bottom:20px;letter-spacing:.5px;}
.hero-subtitle{font-size:clamp(15px,1.6vw,18px);color:var(--text-light);max-width:760px;margin:0 auto 32px;}
.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:20px;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:clamp(20px,2.6vw,28px);font-weight:800;color:var(--primary);display:block;margin-bottom:6px;}
.hero-stat-label{font-size:13px;color:var(--text-light);}
/* 时间轴 */
.timeline{position:relative;padding-left:28px;border-left:2px solid var(--border);}
.timeline-item{position:relative;padding-bottom:32px;}
.timeline-dot{position:absolute;left:-37px;top:6px;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{background:#fff;border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);border:1px solid var(--border);}
.timeline-date{font-size:13px;color:var(--accent);font-weight:600;margin-bottom:6px;}
.timeline-title{font-size:17px;margin-bottom:8px;}
.timeline-text{color:var(--text-light);font-size:15px;}
/* 新闻 */
.news-list{display:grid;gap:20px;}
.news-item{background:#fff;border-radius:var(--radius);padding:24px;border:1px solid var(--border);box-shadow:var(--shadow);}
.news-title{font-size:18px;margin-bottom:8px;}
.news-meta{display:flex;gap:12px;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:var(--primary-light);color:var(--primary);padding:2px 10px;border-radius:999px;font-size:12px;}
.news-summary{color:var(--text-light);font-size:15px;}
.news-body{color:var(--text-light);font-size:15px;margin-top:12px;}
.news-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}
.tag{background:var(--bg-alt);color:var(--text-light);border:1px solid var(--border);padding:3px 12px;border-radius:999px;font-size:12px;}
/* FAQ */
.faq-list{display:grid;gap:16px;max-width:900px;margin:0 auto;}
.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-bottom:10px;color:var(--text);}
.faq-answer{color:var(--text-light);font-size:15px;}
/* 表单 */
.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:10px;font-size:15px;font-family:inherit;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 var(--primary-light);}
.form-textarea{min-height:130px;resize:vertical;}
.form-submit{display:inline-block;padding:13px 34px;border:none;border-radius:999px;background:var(--primary);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:background .25s,transform .25s;}
.form-submit:hover{background:var(--primary-dark);transform:translateY(-2px);}
.form-tip{font-size:13px;color:var(--text-light);margin-top:10px;}
/* 数据可视化 */
.stat-item{text-align:center;padding:20px;}
.stat-number{font-size:clamp(22px,3vw,30px);font-weight:800;color:var(--primary);display:block;margin-bottom:6px;}
.stat-label{font-size:14px;color:var(--text-light);}
.progress{height:10px;background:var(--border);border-radius:999px;overflow:hidden;margin:10px 0 18px;}
.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:220px;padding:20px 0;}
.bar-item{flex:1;display:flex;flex-direction:column;align-items:center;height:100%;justify-content:flex-end;}
.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);margin-top:10px;text-align:center;}
/* 其他组件 */
.badge{display:inline-block;background:var(--accent);color:#fff;font-size:12px;padding:3px 12px;border-radius:999px;font-weight:600;}
.customer-card,.case-card,.honor-card,.review-card,.benefit-card,.support-card,.region-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,.support-card:hover,.region-card:hover{transform:translateY(-4px);box-shadow:0 12px 32px rgba(31,39,51,.12);}
.partner-logo{display:flex;align-items:center;justify-content:center;height:80px;background:var(--bg-alt);border:1px dashed var(--border);border-radius:var(--radius);color:var(--text-light);font-size:14px;}
.step-list{display:grid;gap:24px;grid-template-columns:repeat(4,1fr);}
.step-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px 22px;box-shadow:var(--shadow);text-align:center;}
.step-number{width:44px;height:44px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;margin:0 auto 16px;}
/* 页脚 */
.footer{background:#1f2733;color:#c9d3e3;padding:60px 0 0;}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:36px;}
.footer-col{font-size:14px;}
.footer-title{color:#fff;font-size:16px;font-weight:700;margin-bottom:16px;}
.footer-link{display:block;color:#a9b6c9;margin-bottom:10px;font-size:14px;transition:color .25s;}
.footer-link:hover{color:#fff;}
.footer-info{color:#a9b6c9;font-size:14px;line-height:2;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);margin-top:48px;padding:22px 20px;text-align:center;font-size:13px;color:#8c99ad;}
/* 响应式 */
@media (max-width:1200px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .step-list{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:992px){
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .nav-list{position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#fff;padding:18px 20px;gap:16px;border-bottom:1px solid var(--border);box-shadow:0 12px 24px rgba(31,39,51,.08);display:none;}
  .nav-list.open{display:flex;}
  .nav-toggle{display:block;}
  .nav-cta .btn{display:none;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .step-list{grid-template-columns:1fr;}
  .hero{padding:120px 0 60px;}
  .footer-inner{grid-template-columns:1fr;}
  .bar-chart{height:180px;gap:10px;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .card{padding:22px;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:12px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;}
}