:root{
  --primary:#e86a2b;
  --primary-dark:#c2521b;
  --primary-light:#fdf0e7;
  --accent:#2d3a4b;
  --text:#26303c;
  --text-light:#5f6b7a;
  --bg:#ffffff;
  --bg-alt:#f7f8fa;
  --border:#e6e9ee;
  --shadow:0 6px 20px rgba(38,48,60,.08);
  --radius:14px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;scroll-padding-top:80px;}
body{font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,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,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;line-height:1.35;letter-spacing:.5px;color:var(--accent);font-weight:700;}
.section-title::after{content:"";display:block;width:48px;height:4px;border-radius:2px;background:var(--primary);margin:18px auto 0;}
.section-subtitle{color:var(--text-light);font-size:16px;margin-top: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-wrap:wrap;}
.flex-between{display:flex;align-items:center;justify-content:space-between;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 32px rgba(38,48,60,.13);}
.card-icon{width:56px;height:56px;border-radius:12px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary);font-size:24px;font-weight:700;margin-bottom:18px;}
.card-title{font-size:19px;font-weight:700;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:14px 30px;border-radius:999px;font-size:16px;font-weight:600;cursor:pointer;border:2px solid transparent;transition:all .25s;white-space:nowrap;}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 8px 18px rgba(232,106,43,.28);}
.btn-primary:hover{background:var(--primary-dark);border-color: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:9px 20px;font-size:14px;}
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);transition:box-shadow .3s;}
.nav.scrolled{box-shadow:0 4px 18px rgba(38,48,60,.1);}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 20px;height:68px;display:flex;align-items:center;justify-content:space-between;gap:16px;}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--accent);letter-spacing:.5px;}
.nav-logo::before{content:"黄";display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:var(--primary);color:#fff;font-size:18px;}
.nav-list{display:flex;align-items:center;gap:26px;}
.nav-link{font-size:15px;font-weight:500;color:var(--text);position:relative;padding:6px 0;transition:color .2s;}
.nav-link:hover{color:var(--primary);}
.nav-cta{padding:10px 22px;font-size:14px;border-radius:999px;background:var(--primary);color:#fff;font-weight:600;transition:background .25s;}
.nav-cta:hover{background:var(--primary-dark);}
.nav-toggle{display:none;width:40px;height:40px;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;transition:all .25s;}
.hero{position:relative;padding:150px 0 90px;background:linear-gradient(160deg,#fff 0%,var(--primary-light) 55%,#fff 100%);overflow:hidden;}
.hero::before{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(232,106,43,.18),transparent 70%);}
.hero::after{content:"";position:absolute;left:-100px;bottom:-140px;width:360px;height:360px;border-radius:50%;background:radial-gradient(circle,rgba(45,58,75,.1),transparent 70%);}
.hero-inner{max-width:1200px;margin:0 auto;padding:0 20px;position:relative;z-index:2;text-align:center;}
.hero-title{font-size:48px;line-height:1.25;font-weight:800;color:var(--accent);letter-spacing:1px;}
.hero-title::after{content:"";display:block;width:70px;height:5px;border-radius:3px;background:var(--primary);margin:22px auto 0;}
.hero-subtitle{font-size:18px;color:var(--text-light);max-width:720px;margin:22px auto 0;}
.hero-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-top:36px;}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:60px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:32px 24px;box-shadow:var(--shadow);}
.hero-stat{text-align:center;border-right:1px solid var(--border);}
.hero-stat:last-child{border-right:none;}
.hero-stat-num{font-size:32px;font-weight:800;color:var(--primary);line-height:1.2;}
.hero-stat-label{font-size:14px;color:var(--text-light);margin-top:6px;}
.timeline{position:relative;padding-left:28px;}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--border);}
.timeline-item{position:relative;padding-bottom:28px;}
.timeline-dot{position:absolute;left:-28px;top:6px;width:16px;height:16px;border-radius:50%;background:var(--primary);border:3px solid #fff;box-shadow:0 0 0 2px var(--primary-light);}
.timeline-date{font-size:13px;font-weight:700;color:var(--primary);letter-spacing:.5px;}
.timeline-title{font-size:17px;font-weight:700;color:var(--accent);margin:4px 0 6px;}
.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:24px;box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s;}
.news-item:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(38,48,60,.12);}
.news-title{font-size:18px;font-weight:700;color:var(--accent);margin-bottom:8px;}
.news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:10px;}
.news-date{font-size:13px;color:var(--text-light);}
.news-category{font-size:12px;font-weight:600;color:var(--primary);background:var(--primary-light);padding:3px 12px;border-radius:999px;}
.news-summary{font-size:15px;color:var(--text-light);}
.news-body{margin-top:12px;font-size:15px;color:var(--text-light);}
.news-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}
.tag{display:inline-block;font-size:12px;padding:4px 12px;border-radius:999px;background:var(--bg-alt);color:var(--text-light);border:1px solid var(--border);}
.faq-list{display:grid;gap:14px;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:700;color:var(--accent);display:flex;align-items:flex-start;gap:10px;}
.faq-question::before{content:"Q";flex:none;width:24px;height:24px;border-radius:50%;background:var(--primary);color:#fff;font-size:13px;display:inline-flex;align-items:center;justify-content:center;margin-top:2px;}
.faq-answer{font-size:15px;color:var(--text-light);margin-top:12px;padding-left:34px;}
.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:13px 16px;font-size:15px;font-family:inherit;color:var(--text);background:#fff;border:1px solid var(--border);border-radius:10px;transition:border-color .2s,box-shadow .2s;}
.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{width:100%;padding:15px;font-size:16px;font-weight:700;color:#fff;background:var(--primary);border:none;border-radius:10px;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:20px;}
.stat-number{font-size:34px;font-weight:800;color:var(--primary);line-height:1.2;}
.stat-label{font-size:14px;color:var(--text-light);margin-top:6px;}
.progress{height:10px;border-radius:5px;background:var(--border);overflow:hidden;margin-top:10px;}
.progress-fill{height:100%;border-radius:5px;background:linear-gradient(90deg,var(--primary),var(--primary-dark));}
.bar-chart{display:flex;align-items:flex-end;justify-content:space-around;gap:16px;height:220px;padding:16px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);}
.bar-item{display:flex;flex-direction:column;align-items:center;justify-content:flex-end;flex:1;height:100%;gap:8px;}
.bar-fill{width:100%;max-width:46px;border-radius:6px 6px 0 0;background:linear-gradient(180deg,var(--primary),var(--primary-dark));transition:height .4s;}
.bar-label{font-size:12px;color:var(--text-light);}
.badge{display:inline-block;font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;background:var(--primary);color:#fff;}
.customer-card,.case-card,.honor-card,.partner-logo,.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 32px rgba(38,48,60,.12);}
.partner-logo{display:flex;align-items:center;justify-content:center;min-height:88px;font-size:14px;color:var(--text-light);background:var(--bg-alt);border-style:dashed;}
.step-list{display:grid;gap:18px;}
.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:none;width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;}
.footer{background:var(--accent);color:#c9d1db;padding:64px 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{min-width:0;}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-link{display:block;font-size:14px;color:#c9d1db;margin-bottom:10px;transition:color .2s;}
.footer-link:hover{color:var(--primary);}
.footer-info{font-size:14px;line-height:2;color:#c9d1db;}
.footer-bottom{max-width:1200px;margin:44px auto 0;padding:22px 20px;border-top:1px solid rgba(255,255,255,.12);display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#9aa7b5;}
@media (min-width:1200px){
  .container{max-width:1200px;}
}
@media (max-width:992px){
  .grid-4{grid-template-columns:repeat(2,1fr);}
  .grid-3{grid-template-columns:repeat(2,1fr);}
  .hero-title{font-size:38px;}
  .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:56px 0;}
  .section-title{font-size:26px;}
  .hero{padding:120px 0 64px;}
  .hero-title{font-size:30px;}
  .hero-subtitle{font-size:16px;}
  .grid-2,.grid-3{grid-template-columns:1fr;}
  .nav-list{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:12px 20px 20px;border-bottom:1px solid var(--border);box-shadow:0 12px 24px rgba(38,48,60,.1);transform:translateY(-130%);transition:transform .3s;visibility:hidden;}
  .nav-list.open{transform:translateY(0);visibility:visible;}
  .nav-link{display:block;padding:12px 0;border-bottom:1px solid var(--border);}
  .nav-cta{display:none;}
  .nav-toggle{display:flex;}
}
@media (max-width:480px){
  .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;padding:22px 16px;}
  .hero-stat{border-right:none;border-bottom:1px solid var(--border);padding-bottom:16px;}
  .hero-stat:last-child{border-bottom:none;padding-bottom:0;}
  .footer-inner{grid-template-columns:1fr;}
  .grid-4{grid-template-columns:1fr;}
  .card{padding:22px;}
}