:root{
  --primary:#8a5a2b;
  --primary-dark:#5f3d1c;
  --primary-light:#c69a6d;
  --accent:#3f6b63;
  --text:#2b2724;
  --text-light:#6f675f;
  --bg:#fdfaf6;
  --bg-alt:#f4ede4;
  --border:#e4dbcf;
  --shadow:0 4px 18px rgba(80,60,40,.10);
  --radius:14px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",-apple-system,"Segoe UI",sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;}
h1,h2,h3,h4{line-height:1.35;font-weight:700;}
button,input,select,textarea{font-family:inherit;font-size:inherit;}

.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:780px;margin:0 auto 52px;}
.section-title{font-size:clamp(24px,3vw,34px);color:var(--primary-dark);letter-spacing:.5px;}
.section-title::after{content:"";display:block;width:56px;height:3px;background:var(--primary-light);border-radius:3px;margin:16px auto 0;}
.section-subtitle{margin-top:16px;color:var(--text-light);font-size:16px;}

.grid{display:grid;gap:26px;}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px;}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.flex{display:flex;gap:16px;}
.flex-between{display:flex;justify-content:space-between;align-items:center;gap:16px;}

.card{
  background:#fff;
  border-radius:var(--radius);
  padding:28px;
  box-shadow:var(--shadow);
  border:1px solid var(--border);
  transition:transform .3s, box-shadow .3s, border-color .3s;
}
.card:hover{transform:translateY(-4px);box-shadow:0 12px 28px rgba(80,60,40,.16);border-color:var(--primary-light);}
.card-icon{
  width:52px;height:52px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:var(--bg-alt);color:var(--primary-dark);
  font-size:22px;font-weight:700;margin-bottom:18px;
}
.card-title{font-size:19px;color:var(--primary-dark);margin-bottom:10px;}
.card-text{color:var(--text-light);font-size:15px;}
.card-body{margin-top:12px;}

.btn{
  display:inline-block;
  padding:13px 30px;
  border-radius:999px;
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background .3s,color .3s,border-color .3s,transform .2s;
  text-align:center;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--primary);color:#fff;}
.btn-primary:hover{background:var(--primary-dark);}
.btn-outline{border-color:var(--primary-light);color:var(--primary-dark);background:transparent;}
.btn-outline:hover{background:var(--primary-light);color:#fff;}
.btn-sm{padding:8px 18px;font-size:13px;}

.nav{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  background:rgba(253,250,246,.94);
  backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .3s,border-color .3s;
}
.nav.scrolled{box-shadow:0 4px 16px rgba(80,60,40,.12);border-bottom-color:var(--border);}
.nav-inner{
  max-width:1200px;margin:0 auto;padding:0 20px;
  height:70px;display:flex;align-items:center;justify-content:space-between;gap:20px;
}
.nav-logo{font-size:20px;font-weight:800;color:var(--primary-dark);letter-spacing:1px;display:flex;align-items:center;gap:10px;}
.nav-logo span{font-size:12px;font-weight:500;color:var(--text-light);letter-spacing:0;}
.nav-list{display:flex;align-items:center;gap:6px;}
.nav-link{
  display:inline-block;padding:8px 14px;border-radius:999px;
  font-size:15px;color:var(--text);transition:background .25s,color .25s;
}
.nav-link:hover{background:var(--bg-alt);color:var(--primary-dark);}
.nav-toggle{
  display:none;background:none;border:1px solid var(--border);
  border-radius:10px;width:42px;height:42px;cursor:pointer;
  color:var(--primary-dark);font-size:20px;line-height:1;
}
.nav-cta{
  display:inline-block;padding:10px 22px;border-radius:999px;
  background:var(--primary);color:#fff;font-size:14px;font-weight:600;
  transition:background .3s;
}
.nav-cta:hover{background:var(--primary-dark);}

.hero{
  position:relative;
  padding:150px 0 90px;
  background:linear-gradient(160deg,var(--bg-alt) 0%,var(--bg) 55%,#fff 100%);
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;right:-120px;top:60px;
  width:420px;height:420px;border-radius:50%;
  background:radial-gradient(circle,rgba(198,154,109,.30) 0%,rgba(198,154,109,0) 70%);
}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;}
.hero-title{
  font-size:clamp(28px,4.4vw,50px);
  color:var(--primary-dark);
  letter-spacing:1px;
  max-width:820px;
}
.hero-subtitle{
  margin-top:22px;max-width:700px;
  font-size:clamp(15px,1.6vw,18px);
  color:var(--text-light);
}
.hero-actions{margin-top:36px;display:flex;flex-wrap:wrap;gap:16px;}
.hero-stats{
  margin-top:64px;
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
  padding:28px;background:#fff;border-radius:var(--radius);
  box-shadow:var(--shadow);border:1px solid var(--border);
}
.hero-stat{text-align:center;padding:6px 10px;border-right:1px solid var(--border);}
.hero-stat:last-child{border-right:none;}
.hero-stat-num{font-size:clamp(22px,2.6vw,30px);font-weight:800;color:var(--primary);letter-spacing:.5px;}
.hero-stat-label{font-size:13px;color:var(--text-light);margin-top:6px;}

.badge{
  display:inline-block;padding:4px 12px;border-radius:999px;
  background:var(--bg-alt);color:var(--primary-dark);
  font-size:12px;font-weight:600;letter-spacing:.5px;
}
.tag{
  display:inline-block;padding:3px 10px;border-radius:6px;
  background:var(--bg-alt);color:var(--text-light);
  font-size:12px;margin:0 8px 8px 0;
}

.timeline{position:relative;padding-left:26px;}
.timeline::before{content:"";position:absolute;left:6px;top:6px;bottom:6px;width:2px;background:var(--border);}
.timeline-item{position:relative;padding:0 0 30px 20px;}
.timeline-dot{
  position:absolute;left:-27px;top:6px;width:12px;height:12px;border-radius:50%;
  background:var(--primary);border:3px solid var(--bg-alt);
}
.timeline-date{font-size:13px;color:var(--primary);font-weight:600;}
.timeline-title{font-size:17px;color:var(--primary-dark);margin:6px 0;}
.timeline-text{font-size:14px;color:var(--text-light);}
.timeline-content{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);}

.news-list{display:grid;gap:20px;}
.news-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:transform .3s;}
.news-item:hover{transform:translateY(-4px);}
.news-title{font-size:18px;color:var(--primary-dark);}
.news-meta{display:flex;align-items:center;gap:14px;margin:8px 0 10px;font-size:13px;color:var(--text-light);}
.news-date{color:var(--text-light);}
.news-category{padding:2px 10px;border-radius:999px;background:var(--bg-alt);color:var(--primary-dark);font-weight:600;}
.news-summary{font-size:15px;color:var(--text-light);}
.news-body{margin-top:12px;font-size:15px;color:var(--text-light);}
.news-tags{margin-top:14px;}

.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;color:var(--primary-dark);}
.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(--primary-dark);margin-bottom:8px;}
.form-input,.form-select,.form-textarea{
  width:100%;padding:12px 14px;border:1px solid var(--border);
  border-radius:10px;background:#fff;color:var(--text);outline:none;
  transition:border-color .25s,box-shadow .25s;
}
.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary-light);box-shadow:0 0 0 3px rgba(198,154,109,.20);}
.form-textarea{min-height:130px;resize:vertical;}
.form-submit{
  display:inline-block;padding:13px 34px;border-radius:999px;border:none;
  background:var(--primary);color:#fff;font-weight:600;cursor:pointer;
  transition:background .3s;
}
.form-submit:hover{background:var(--primary-dark);}
.form-tip{font-size:13px;color:var(--text-light);margin-top:10px;}

.stat-item{text-align:center;padding:18px 10px;}
.stat-number{font-size:30px;font-weight:800;color:var(--primary);}
.stat-label{font-size:13px;color:var(--text-light);margin-top:6px;}
.progress{height:10px;border-radius:999px;background:var(--bg-alt);overflow:hidden;}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary-light),var(--primary));border-radius:999px;}
.bar-chart{display:flex;align-items:flex-end;gap:18px;height:220px;padding:10px 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:12px;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:24px;box-shadow:var(--shadow);transition:transform .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);}
.partner-logo{
  display:flex;align-items:center;justify-content:center;
  height:84px;border:1px dashed var(--border);border-radius:var(--radius);
  background:#fff;color:var(--text-light);font-size:13px;letter-spacing:1px;
}
.step-list{display:grid;gap:20px;}
.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:0 0 42px;width:42px;height:42px;border-radius:50%;
  background:var(--primary);color:#fff;font-weight:800;
  display:flex;align-items:center;justify-content:center;font-size:17px;
}

.footer{background:#3a2f26;color:#e9e0d4;padding:64px 0 0;}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:34px;}
.footer-col{font-size:14px;}
.footer-title{font-size:16px;color:#fff;margin-bottom:16px;font-weight:700;}
.footer-link{display:block;color:#c9bdae;padding:5px 0;transition:color .25s;}
.footer-link:hover{color:var(--primary-light);}
.footer-info{font-size:14px;color:#c9bdae;line-height:2;}
.footer-bottom{
  max-width:1200px;margin:44px auto 0;padding:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;
  font-size:13px;color:#a99c8c;
}

@media (max-width:1200px){
  .container{padding:0 22px;}
}
@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);}
  .hero-stat:nth-child(2){border-right:none;}
  .footer-inner{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:768px){
  .section{padding:60px 0;}
  .nav-list{
    position:absolute;top:70px;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--border);
    box-shadow:0 8px 20px rgba(80,60,40,.12);
    max-height:0;overflow:hidden;transition:max-height .35s ease;
  }
  .nav-list.open{max-height:420px;}
  .nav-link{padding:14px 22px;border-radius:0;border-bottom:1px solid var(--border);}
  .nav-toggle{display:block;}
  .nav-cta{display:none;}
  .hero{padding:120px 0 66px;}
  .grid-2,.grid-3{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;padding:20px;}
  .hero-stat{border-right:none;border-bottom:1px solid var(--border);padding-bottom:14px;}
  .hero-stat:last-child{border-bottom:none;}
  .grid-4{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;text-align:center;}
  .btn{width:100%;}
  .hero-actions{flex-direction:column;}
}