:root{
  --primary:#3d5afe;
  --primary-dark:#2a3fb8;
  --primary-light:#e8ecff;
  --accent:#ff7043;
  --text:#1b2130;
  --text-light:#5c667c;
  --bg:#ffffff;
  --bg-alt:#f5f7fc;
  --border:#e2e7f2;
  --shadow:0 6px 22px rgba(30,45,90,.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;
}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
h1,h2,h3,h4{line-height:1.3;}
img,svg{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;}
.section-subtitle{margin-top:14px;color:var(--text-light);font-size:16px;}
.grid{display:grid;gap:24px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.flex{display:flex;align-items:center;gap:12px;}
.flex-between{display:flex;align-items:center;justify-content:space-between;}

/* 卡片 */
.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 14px 34px rgba(30,45,90,.14);}
.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:22px;font-weight:700;margin-bottom:18px;
}
.card-title{font-size:19px;font-weight:700;margin-bottom:10px;}
.card-text{color:var(--text-light);font-size:15px;}
.card-body{margin-top:14px;color:var(--text-light);font-size:15px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 28px;border-radius:999px;font-size:15px;font-weight:600;
  border:1.5px solid transparent;cursor:pointer;transition:all .25s;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background: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;}

/* 导航 */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;transition:box-shadow .3s,background .3s;
}
.nav.scrolled{box-shadow:0 4px 20px rgba(30,45,90,.10);background:#fff;}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;height:72px;
  display:flex;align-items:center;justify-content:space-between;
}
.nav-logo{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:.5px;display:flex;align-items:center;gap:8px;}
.nav-logo span{color:var(--text);}
.nav-list{display:flex;align-items:center;gap:30px;}
.nav-link{font-size:15px;color:var(--text-light);font-weight:500;transition:color .25s;position:relative;}
.nav-link:hover{color:var(--primary);}
.nav-cta{display:flex;align-items:center;gap:14px;}
.nav-toggle{
  display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px;
}
.nav-toggle i{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:.3s;}

/* Hero */
.hero{
  padding:150px 0 90px;
  background:linear-gradient(160deg,#f2f5ff 0%,#ffffff 60%);
  position:relative;overflow:hidden;
}
.hero-inner{max-width:960px;margin:0 auto;padding:0 20px;text-align:center;}
.hero-title{font-size:46px;font-weight:800;letter-spacing:1px;color:var(--text);}
.hero-title strong{color:var(--primary);}
.hero-subtitle{margin-top:22px;font-size:18px;color:var(--text-light);max-width:720px;margin-left:auto;margin-right:auto;}
.hero-actions{margin-top:36px;display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}
.hero-stats{margin-top:60px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.hero-stat{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px 16px;box-shadow:var(--shadow);}
.hero-stat-num{font-size:26px;font-weight:800;color:var(--primary);}
.hero-stat-label{margin-top:8px;font-size:14px;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:-36px;top:5px;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:1px solid var(--border);border-radius:var(--radius);padding:20px 22px;box-shadow:var(--shadow);}
.timeline-date{font-size:13px;color:var(--accent);font-weight:600;}
.timeline-title{font-size:17px;font-weight:700;margin:6px 0 8px;}
.timeline-text{color:var(--text-light);font-size:14.5px;}

/* 新闻 */
.news-list{display:flex;flex-direction:column;gap:20px;}
.news-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;}
.news-item:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(30,45,90,.12);}
.news-title{font-size:18px;font-weight:700;margin-bottom:8px;}
.news-meta{display:flex;align-items:center;gap:12px;font-size:13px;color:var(--text-light);}
.news-date{color:var(--text-light);}
.news-category{background:var(--primary-light);color:var(--primary);padding:2px 10px;border-radius:999px;font-weight:600;}
.news-summary{margin-top:10px;color:var(--text-light);font-size:14.5px;}
.news-body{margin-top:12px;color:var(--text-light);font-size:14.5px;}
.news-tags{margin-top:14px;display:flex;gap:8px;flex-wrap:wrap;}
.tag{background:var(--bg-alt);border:1px solid var(--border);color:var(--text-light);font-size:12.5px;padding:3px 10px;border-radius:999px;}

/* FAQ */
.faq-list{display:flex;flex-direction:column;gap:16px;max-width:860px;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:8px;color:var(--text);}
.faq-answer{color:var(--text-light);font-size:14.5px;}

/* 表单 */
.form-group{margin-bottom:20px;}
.form-label{display:block;font-size:14.5px;font-weight:600;margin-bottom:8px;}
.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-flex;align-items:center;justify-content:center;
  padding:13px 32px;border-radius:999px;background:var(--primary);color:#fff;
  border:none;font-size:15px;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:10px;}

/* 数据可视化 */
.stat-item{text-align:center;padding:22px 12px;}
.stat-number{font-size:30px;font-weight:800;color:var(--primary);}
.stat-label{margin-top:6px;font-size:14px;color:var(--text-light);}
.progress{width:100%;height:10px;background:var(--border);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:18px;height:220px;padding:10px 4px;border-bottom:1px solid var(--border);}
.bar-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;}
.bar-fill{width:100%;max-width:46px;background:linear-gradient(180deg,var(--primary),var(--primary-dark));border-radius:8px 8px 0 0;transition:height .4s;}
.bar-label{margin-top:10px;font-size:13px;color:var(--text-light);}

/* 其他组件 */
.badge{display:inline-block;background:var(--primary-light);color:var(--primary);font-size:12.5px;font-weight:700;padding:4px 12px;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:26px;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 14px 34px rgba(30,45,90,.14);}
.partner-logo{
  height:64px;border:1px dashed var(--border);border-radius:var(--radius);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--text-light);font-size:13.5px;
}
.step-list{display:flex;flex-direction:column;gap:20px;}
.step-item{display:flex;gap:18px;align-items:flex-start;}
.step-number{
  flex:0 0 42px;width:42px;height:42px;border-radius:50%;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;
}

/* 页脚 */
.footer{background:#131a2b;color:#c3cadb;padding:70px 0 0;}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:44px;}
.footer-col{font-size:14.5px;}
.footer-title{color:#fff;font-size:16px;font-weight:700;margin-bottom:16px;}
.footer-link{display:block;color:#aab3c8;font-size:14.5px;margin-bottom:10px;transition:color .25s;}
.footer-link:hover{color:#fff;}
.footer-info{color:#aab3c8;font-size:14.5px;line-height:2;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);padding:22px 20px;max-width:1200px;margin:0 auto;
  display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13.5px;color:#8b95ac;
}

/* 响应式 */
@media (max-width:1200px){
  .container{max-width:1080px;}
  .grid-4{grid-template-columns:repeat(3,1fr);}
}
@media (max-width:992px){
  .section{padding:64px 0;}
  .hero{padding:130px 0 70px;}
  .hero-title{font-size:38px;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:repeat(2,1fr);}
  .nav-list{
    position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:flex-start;gap:0;padding:10px 20px 20px;display:none;box-shadow:0 14px 30px rgba(30,45,90,.12);
  }
  .nav-list.open{display:flex;}
  .nav-list .nav-link{display:block;width:100%;padding:12px 0;border-bottom:1px solid var(--border);}
  .nav-toggle{display:flex;}
  .nav-cta{display:none;}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .section-title{font-size:26px;}
  .hero{padding:120px 0 60px;}
  .hero-title{font-size:31px;}
  .hero-subtitle{font-size:16px;}
  .grid,.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:14px;}
  .footer-inner{grid-template-columns:1fr;gap:26px;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;}
}
@media (max-width:480px){
  .container{padding:0 16px;}
  .hero-title{font-size:26px;}
  .hero-stat-num{font-size:22px;}
  .card{padding:22px;}
  .section-header{margin-bottom:34px;}
}