:root{
  --primary:#e8442c;
  --primary-dark:#b62f1c;
  --primary-light:#ff7a5e;
  --accent:#1f2b45;
  --text:#232323;
  --text-light:#6b7280;
  --bg:#ffffff;
  --bg-alt:#f6f7f9;
  --border:#e6e8ec;
  --shadow:0 6px 24px rgba(24,32,52,.08);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{text-decoration:none;color:inherit;}
ul{list-style:none;}
h1,h2,h3,h4{line-height:1.3;}
.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,3.4vw,36px);color:var(--accent);letter-spacing:.5px;}
.section-title::after{content:"";display:block;width:52px;height:4px;border-radius:4px;background:var(--primary);margin:16px auto 0;}
.section-subtitle{color:var(--text-light);margin-top:16px;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;gap:16px;align-items:center;flex-wrap:wrap;}
.flex-between{display:flex;justify-content:space-between;align-items:center;gap:16px;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 14px 34px rgba(24,32,52,.14);}
.card-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;background:rgba(232,68,44,.1);color:var(--primary);font-size:22px;font-weight:700;margin-bottom:18px;}
.card-title{font-size:19px;color:var(--accent);margin-bottom:10px;}
.card-text{color:var(--text-light);font-size:15px;}
.card-body{margin-top:14px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 28px;border-radius:999px;font-size:16px;font-weight:600;cursor:pointer;border:2px solid transparent;transition:all .25s;}
.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(--accent);border-color:var(--border);}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);}
.btn-sm{padding:8px 18px;font-size:14px;}
.badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:13px;background:rgba(232,68,44,.1);color:var(--primary);font-weight:600;}
.nav{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:box-shadow .3s,border-color .3s;}
.nav.scrolled{box-shadow:0 6px 22px rgba(24,32,52,.1);border-color:var(--border);}
.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:21px;font-weight:800;color:var(--accent);letter-spacing:1px;display:flex;align-items:center;gap:8px;}
.nav-logo span{color:var(--primary);}
.nav-list{display:flex;gap:30px;align-items:center;}
.nav-link{font-size:15px;color:var(--text);font-weight:500;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:flex;align-items:center;gap:12px;}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--border);border-radius:10px;background:#fff;cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--accent);border-radius:2px;}
.hero{position:relative;padding:150px 0 80px;background:linear-gradient(160deg,#fff5f2 0%,#ffffff 55%,#f6f7f9 100%);overflow:hidden;}
.hero::before{content:"";position:absolute;top:-120px;right:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(232,68,44,.16),transparent 70%);}
.hero-inner{position:relative;z-index:1;max-width:1200px;margin:0 auto;padding:0 20px;text-align:center;}
.hero-title{font-size:clamp(30px,5vw,52px);color:var(--accent);font-weight:800;letter-spacing:1px;}
.hero-title strong{color:var(--primary);}
.hero-subtitle{max-width:720px;margin:22px auto 0;color:var(--text-light);font-size:clamp(15px,1.8vw,18px);}
.hero-actions{display:flex;gap:16px;justify-content:center;margin-top:38px;flex-wrap:wrap;}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:64px;}
.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:clamp(22px,3vw,32px);font-weight:800;color:var(--primary);}
.hero-stat-label{font-size:14px;color:var(--text-light);margin-top:8px;}
.timeline{position:relative;padding-left:28px;border-left:2px solid var(--border);}
.timeline-item{position:relative;padding-bottom:34px;}
.timeline-item:last-child{padding-bottom:0;}
.timeline-dot{position:absolute;left:-37px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--primary);border:3px solid #fff;box-shadow:0 0 0 2px var(--border);}
.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;color:var(--accent);margin:6px 0;}
.timeline-text{font-size:14px;color:var(--text-light);}
.news-list{display:grid;gap:20px;}
.news-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;}
.news-item:hover{transform:translateY(-4px);box-shadow:0 14px 34px rgba(24,32,52,.14);}
.news-title{font-size:19px;color:var(--accent);margin-bottom:10px;}
.news-meta{display:flex;gap:12px;align-items:center;margin-bottom:12px;flex-wrap:wrap;}
.news-date{font-size:13px;color:var(--text-light);}
.news-category{font-size:12px;padding:3px 10px;border-radius:999px;background:rgba(31,43,69,.07);color:var(--accent);}
.news-summary{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;margin-top:16px;flex-wrap:wrap;}
.tag{font-size:12px;padding:3px 10px;border-radius:6px;background:var(--bg-alt);color:var(--text-light);border:1px solid var(--border);}
.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 26px;box-shadow:var(--shadow);}
.faq-question{font-size:17px;font-weight:600;color:var(--accent);}
.faq-answer{margin-top:10px;font-size:15px;color:var(--text-light);}
.form-group{margin-bottom:20px;}
.form-label{display:block;font-size:14px;font-weight:600;color:var(--accent);margin-bottom:8px;}
.form-input,.form-select,.form-textarea{width:100%;padding:12px 16px;border:1px solid var(--border);border-radius:10px;font-size:15px;font-family:inherit;color:var(--text);background:#fff;transition:border-color .25s;}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary);}
.form-textarea{min-height:130px;resize:vertical;}
.form-submit{width:100%;padding:14px;border-radius:999px;border:none;background:var(--primary);color:#fff;font-size:16px;font-weight:700;cursor:pointer;transition:background .25s;}
.form-submit:hover{background:var(--primary-dark);}
.form-tip{font-size:13px;color:var(--text-light);margin-top:12px;text-align:center;}
.stat-item{text-align:center;padding:24px 16px;}
.stat-number{font-size:clamp(22px,3vw,32px);font-weight:800;color:var(--primary);}
.stat-label{font-size:14px;color:var(--text-light);margin-top:8px;}
.progress{height:10px;border-radius:999px;background:var(--bg-alt);overflow:hidden;margin-top:12px;}
.progress-fill{height:100%;border-radius:999px;background:linear-gradient(90deg,var(--primary),var(--primary-light));}
.bar-chart{display:flex;align-items:flex-end;gap:18px;height:220px;padding:20px 0;}
.bar-item{flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;}
.bar-fill{width:100%;border-radius:8px 8px 0 0;background:linear-gradient(180deg,var(--primary-light),var(--primary));}
.bar-label{font-size:13px;color:var(--text-light);margin-top:10px;}
.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(24,32,52,.14);}
.partner-logo{display:flex;align-items:center;justify-content:center;height:76px;border:1px dashed var(--border);border-radius:var(--radius);color:var(--text-light);font-size:14px;background:#fff;}
.step-list{display:grid;gap:22px;}
.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 44px;width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:var(--primary);color:#fff;font-weight:800;font-size:18px;}
.footer{background:var(--accent);color:#c9cfdc;padding:64px 0 0;}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-col{min-width:0;}
.footer-title{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;}
.footer-link{display:block;font-size:14px;color:#c9cfdc;margin-bottom:10px;transition:color .25s;}
.footer-link:hover{color:var(--primary-light);}
.footer-info{font-size:14px;line-height:1.9;color:#c9cfdc;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:48px;padding:22px 0;text-align:center;font-size:13px;color:#9aa3b5;}
@media (max-width:1200px){
  .container,.nav-inner,.hero-inner{max-width:1000px;}
}
@media (max-width:992px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .hero-stats{grid-template-columns:repeat(2,1fr);}
  .footer-inner{grid-template-columns:repeat(2,1fr);}
  .nav-list{display:none;}
  .nav-toggle{display:flex;}
  .nav-list.open{display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;padding:20px;gap:16px;box-shadow:0 14px 34px rgba(24,32,52,.14);border-top:1px solid var(--border);}
}
@media (max-width:768px){
  .section{padding:56px 0;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}
  .hero{padding:120px 0 60px;}
  .hero-actions .btn{flex:1 1 auto;}
  .step-item{flex-direction:column;}
  .bar-chart{height:180px;gap:12px;}
}
@media (max-width:480px){
  .hero-stats{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;}
  .card{padding:22px;}
}