:root{
  --primary:#e8432e;
  --primary-dark:#b82e1d;
  --primary-light:#ff7a63;
  --accent:#ffb703;
  --text:#1f2328;
  --text-light:#5c6570;
  --bg:#ffffff;
  --bg-alt:#f6f7f9;
  --border:#e4e7eb;
  --shadow:0 4px 18px rgba(24,32,45,.08);
  --radius:12px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,figure{margin:0;}
ul{padding:0;list-style:none;}
a{text-decoration:none;color:inherit;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}
.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;padding:0 20px;}
.section-title{
  font-size:32px;
  line-height:1.3;
  font-weight:700;
  letter-spacing:.5px;
  position:relative;
  display:inline-block;
  padding-bottom:14px;
}
.section-title::after{
  content:"";
  position:absolute;
  left:50%;bottom:0;
  transform:translateX(-50%);
  width:56px;height:4px;
  border-radius:2px;
  background:linear-gradient(90deg,var(--primary),var(--accent));
}
.section-subtitle{
  margin-top:16px;
  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;align-items:center;gap:16px;flex-wrap:wrap;}
.flex-between{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;}

/* 卡片 */
.card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
  box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s,border-color .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(24,32,45,.13);border-color:#dfe3e8;}
.card-icon{
  width:52px;height:52px;
  display:flex;align-items:center;justify-content:center;
  border-radius:14px;
  background:rgba(232,67,46,.1);
  color:var(--primary);
  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;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 30px;
  border-radius:999px;
  font-size:16px;font-weight:600;
  border:2px solid transparent;
  transition:all .25s;
  white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px rgba(232,67,46,.28);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 10px 22px rgba(232,67,46,.34);}
.btn-outline{border-color:var(--primary);color:var(--primary);background:transparent;}
.btn-outline:hover{background:var(--primary);color:#fff;}
.btn-sm{padding:8px 18px;font-size:14px;}

/* 导航 */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(255,255,255,.96);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .3s,border-color .3s;
}
.nav.scrolled{box-shadow:0 4px 16px rgba(24,32,45,.1);border-color:var(--border);}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;
  height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-logo{
  display:flex;align-items:center;gap:10px;
  font-size:21px;font-weight:800;letter-spacing:.5px;color:var(--text);
}
.nav-logo::before{
  content:"";
  width:10px;height:22px;border-radius:3px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
}
.nav-list{display:flex;align-items:center;gap:30px;}
.nav-link{
  font-size:15px;font-weight:500;color:var(--text-light);
  position:relative;padding:6px 0;transition:color .25s;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;
  width:0;height:2px;background:var(--primary);transition:width .25s;
}
.nav-link:hover{color:var(--primary);}
.nav-link:hover::after{width:100%;}
.nav-cta{
  display:inline-flex;align-items:center;
  padding:9px 22px;border-radius:999px;
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  transition:background .25s;
}
.nav-cta:hover{background:var(--primary-dark);}
.nav-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--border);border-radius:10px;
  background:#fff;
  padding:0;
  position:relative;
}
.nav-toggle::before{
  content:"";position:absolute;left:11px;top:13px;
  width:20px;height:2px;background:var(--text);
  box-shadow:0 6px 0 var(--text),0 12px 0 var(--text);
}

/* Hero */
.hero{
  padding:150px 0 90px;
  background:
    radial-gradient(circle at 12% 18%,rgba(232,67,46,.12),transparent 42%),
    radial-gradient(circle at 88% 8%,rgba(255,183,3,.16),transparent 40%),
    var(--bg-alt);
  position:relative;
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;bottom:-160px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,67,46,.09),transparent 70%);
}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:1;}
.hero-title{
  font-size:46px;line-height:1.25;font-weight:800;letter-spacing:1px;
  max-width:820px;
}
.hero-title span{
  background:linear-gradient(90deg,var(--primary),var(--accent));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-subtitle{
  margin-top:22px;max-width:680px;
  font-size:17px;color:var(--text-light);
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:34px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  margin-top:60px;padding-top:36px;
  border-top:1px solid var(--border);
}
.hero-stat{text-align:left;}
.hero-stat-num{
  font-size:32px;font-weight:800;color:var(--primary);line-height:1.1;
  display:block;
}
.hero-stat-label{display:block;margin-top:6px;font-size:14px;color:var(--text-light);}

/* 时间轴 */
.timeline{position:relative;padding-left:28px;}
.timeline::before{
  content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--primary),var(--accent));
  border-radius:2px;
}
.timeline-item{position:relative;padding-bottom:30px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{
  position:absolute;left:-28px;top:6px;
  width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--primary);
}
.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;letter-spacing:.5px;}
.timeline-title{font-size:17px;font-weight:700;margin-top:6px;}
.timeline-text{font-size:14px;color:var(--text-light);margin-top:8px;}

/* 新闻 */
.news-list{display:grid;gap:20px;}
.news-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px 26px;box-shadow:var(--shadow);
  transition:transform .3s,box-shadow .3s;
}
.news-item:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(24,32,45,.12);}
.news-title{font-size:18px;font-weight:700;line-height:1.5;}
.news-meta{display:flex;align-items:center;gap:12px;margin-top:8px;flex-wrap:wrap;}
.news-date{font-size:13px;color:var(--text-light);}
.news-category{
  font-size:12px;font-weight:600;color:var(--primary);
  background:rgba(232,67,46,.1);
  padding:3px 10px;border-radius:999px;
}
.news-summary{margin-top:12px;font-size:15px;color:var(--text-light);}
.news-body{margin-top:14px;font-size:15px;color:var(--text-light);}
.news-tags{display:flex;gap:8px;flex-wrap:wrap;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 */
.faq-list{display:grid;gap:16px;max-width:860px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 26px;box-shadow:var(--shadow);}
.faq-question{font-size:16px;font-weight:700;color:var(--text);}
.faq-answer{margin-top:10px;font-size:15px;color:var(--text-light);}

/* 表单 */
.form-group{margin-bottom:20px;}
.form-label{display:block;font-size:14px;font-weight:600;margin-bottom:8px;}
.form-input,.form-select,.form-textarea{
  width:100%;padding:11px 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 rgba(232,67,46,.14);
}
.form-textarea{min-height:120px;resize:vertical;}
.form-submit{
  display:inline-flex;align-items:center;justify-content:center;
  padding:13px 36px;border:none;border-radius:999px;
  background:var(--primary);color:#fff;font-size:16px;font-weight:600;
  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:10px;}
.stat-number{display:block;font-size:34px;font-weight:800;color:var(--primary);line-height:1.1;}
.stat-label{display:block;margin-top:8px;font-size:14px;color:var(--text-light);}
.progress{height:8px;border-radius:999px;background:var(--bg-alt);overflow:hidden;}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--accent));}
.bar-chart{display:flex;align-items:flex-end;gap:16px;height:200px;padding-top:20px;}
.bar-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:8px;}
.bar-fill{width:100%;border-radius:6px 6px 0 0;background:linear-gradient(180deg,var(--primary-light),var(--primary));}
.bar-label{font-size:12px;color:var(--text-light);}

/* 其他组件 */
.badge{
  display:inline-block;font-size:12px;font-weight:600;
  padding:3px 12px;border-radius:999px;
  color:var(--primary);background:rgba(232,67,46,.1);
}
.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(24,32,45,.13);
}
.partner-logo{
  display:flex;align-items:center;justify-content:center;
  height:76px;border:1px dashed var(--border);border-radius:var(--radius);
  background:var(--bg-alt);color:var(--text-light);
  font-size:14px;letter-spacing:1px;
}
.step-list{display:grid;gap:20px;}
.step-item{display:flex;gap:18px;align-items:flex-start;}
.step-number{
  flex:0 0 40px;width:40px;height:40px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  background:var(--primary);color:#fff;font-weight:700;font-size:16px;
}

/* 页脚 */
.footer{background:#161a20;color:#b9c0c9;padding:64px 0 26px;font-size:14px;}
.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{font-size:15px;font-weight:700;color:#fff;margin-bottom:6px;}
.footer-link{color:#b9c0c9;transition:color .25s;}
.footer-link:hover{color:var(--primary-light);}
.footer-info{line-height:1.9;color:#9aa3ad;}
.footer-bottom{
  max-width:1200px;margin:44px auto 0;padding:22px 20px 0;
  border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:#8a939d;
}

/* 响应式 */
@media (max-width:1199px){
  .container{max-width:100%;}
  .hero-title{font-size:40px;}
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:1fr 1fr;}
}
@media (max-width:992px){
  .section{padding:64px 0;}
  .nav-list{gap:22px;}
  .nav-cta{display:none;}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .hero{padding:130px 0 70px;}
  .hero-title{font-size:36px;}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:26px;}
  .section-title{font-size:27px;}
}
@media (max-width:768px){
  .nav-inner{height:64px;}
  .nav-toggle{display:block;}
  .nav-list{
    display:none;
    position:absolute;top:64px;left:0;right:0;
    flex-direction:column;align-items:flex-start;gap:0;
    background:#fff;border-bottom:1px solid var(--border);
    box-shadow:0 12px 24px rgba(24,32,45,.1);
    padding:8px 20px 18px;
  }
  .nav-list.open{display:flex;}
  .nav-list .nav-link{width:100%;padding:12px 0;border-bottom:1px solid var(--bg-alt);}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .hero{padding:110px 0 60px;}
  .hero-title{font-size:30px;letter-spacing:.5px;}
  .hero-subtitle{font-size:16px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn{flex:1;min-width:150px;padding:12px 20px;font-size:15px;}
  .hero-stats{padding-top:28px;margin-top:40px;}
  .hero-stat-num{font-size:26px;}
  .section{padding:52px 0;}
  .section-header{margin-bottom:34px;}
  .section-title{font-size:24px;}
  .card{padding:22px;}
  .footer-inner{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
}
@media (max-width:480px){
  body{font-size:15px;}
  .container{padding:0 16px;}
  .hero-title{font-size:25px;}
  .hero-actions{flex-direction:column;}
  .hero-actions .btn{width:100%;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:18px;}
  .hero-stat-num{font-size:23px;}
  .section-title{font-size:21px;}
  .section-subtitle{font-size:14px;}
  .btn{padding:12px 22px;font-size:15px;}
  .news-item{padding:20px;}
  .footer{padding:48px 0 22px;}
}