:root{
  --background:#ffffff;
  --foreground:#09090b;
  --muted:#f4f4f5;
  --muted-foreground:#71717a;
  --border:#e4e4e7;
  --card:#ffffff;
  --primary:#18181b;
  --primary-foreground:#fafafa;
  --accent:#f4f4f5;
  --success:#16a34a;
  --radius:8px;
  --shadow:0 1px 2px rgba(0,0,0,.04),0 8px 24px rgba(0,0,0,.04);
  --container:1200px
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--background);color:var(--foreground);line-height:1.65}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
.container{width:min(calc(100% - 32px),var(--container));margin:auto}
.header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border)}
.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{font-weight:800;font-size:20px;letter-spacing:-.5px;display:flex;align-items:center;gap:10px}
.brand-badge{width:28px;height:28px;border:1px solid var(--border);display:grid;place-items:center;border-radius:6px;background:#111;color:#fff}
.nav-links{display:flex;gap:26px;align-items:center;font-size:14px;color:#3f3f46}
.nav-links a:hover{color:#000}
.nav-actions{display:flex;gap:10px}
.btn{display:inline-flex;align-items:center;justify-content:center;height:40px;padding:0 16px;border:1px solid var(--border);border-radius:6px;background:#fff;color:#111;font-weight:600;font-size:14px;cursor:pointer;transition:.2s}
.btn:hover{transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-primary{background:var(--primary);color:var(--primary-foreground);border-color:var(--primary)}
.btn-lg{height:48px;padding:0 22px;font-size:15px}
.btn-ghost{border-color:transparent}
.mobile-toggle{display:none}
.hero{padding:92px 0 70px;border-bottom:1px solid var(--border);background:
radial-gradient(circle at 20% 10%,rgba(24,24,27,.05),transparent 30%),
linear-gradient(#fff,#fafafa)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--border);border-radius:999px;padding:6px 10px;font-size:13px;background:#fff;color:#52525b}
.dot{width:7px;height:7px;border-radius:50%;background:var(--success)}
h1,h2,h3{line-height:1.15;letter-spacing:-.035em;margin:0}
h1{font-size:clamp(42px,6vw,72px);margin-top:22px}
h2{font-size:clamp(30px,4vw,46px)}
h3{font-size:20px}
.lead{font-size:18px;color:var(--muted-foreground);max-width:690px;margin:22px 0 0}
.hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.trust-row{display:flex;gap:28px;flex-wrap:wrap;margin-top:28px;color:#52525b;font-size:14px}
.hero-panel{border:1px solid var(--border);border-radius:10px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
.window-bar{height:42px;border-bottom:1px solid var(--border);display:flex;align-items:center;padding:0 14px;gap:7px;background:#fafafa}
.window-dot{width:9px;height:9px;border-radius:50%;background:#d4d4d8}
.dashboard{padding:18px}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.metric{border:1px solid var(--border);border-radius:7px;padding:14px;background:#fff}
.metric span{font-size:12px;color:var(--muted-foreground)}
.metric strong{display:block;font-size:24px;margin-top:4px}
.chart{height:190px;margin-top:12px;border:1px solid var(--border);border-radius:7px;padding:16px;background:
linear-gradient(to right,transparent 49px,#eee 50px,transparent 51px),
linear-gradient(to bottom,transparent 39px,#eee 40px,transparent 41px);
background-size:50px 40px}
.chart-line{height:100%;position:relative}
.chart-line:after{content:"";position:absolute;left:0;right:0;bottom:24px;height:95px;border-top:3px solid #18181b;transform:skewY(-9deg);border-radius:50%}
.logo-strip{padding:28px 0;border-bottom:1px solid var(--border)}
.logo-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.logo-item{text-align:center;color:#71717a;font-weight:700;font-size:14px}
.section{padding:86px 0}
.section-muted{background:#fafafa;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:760px;margin-bottom:38px}
.section-head p{color:var(--muted-foreground);font-size:17px;margin:16px 0 0}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.card{border:1px solid var(--border);border-radius:8px;background:var(--card);padding:24px;box-shadow:0 1px 1px rgba(0,0,0,.02)}
.card:hover{box-shadow:var(--shadow)}
.icon{width:40px;height:40px;border:1px solid var(--border);border-radius:7px;display:grid;place-items:center;background:#fafafa;font-weight:700;margin-bottom:18px}
.card p{color:var(--muted-foreground);margin:10px 0 0}
.card-link{display:inline-block;margin-top:18px;font-weight:600;font-size:14px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:54px;align-items:center}
.feature-list{display:grid;gap:14px;margin-top:24px}
.feature-item{display:flex;gap:12px;align-items:flex-start}
.check{width:22px;height:22px;border-radius:50%;background:#111;color:#fff;display:grid;place-items:center;font-size:12px;flex:0 0 auto;margin-top:2px}
.mockup{border:1px solid var(--border);border-radius:10px;background:#fff;padding:18px;box-shadow:var(--shadow)}
.mockup-top{display:flex;justify-content:space-between;align-items:center;padding-bottom:14px;border-bottom:1px solid var(--border)}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.product{border:1px solid var(--border);border-radius:7px;overflow:hidden}
.product-img{aspect-ratio:1;background:linear-gradient(135deg,#f4f4f5,#e4e4e7)}
.product-body{padding:10px}
.product-body strong{font-size:13px}
.product-body span{display:block;color:#71717a;font-size:12px}
.stat-band{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--border);border-radius:8px;overflow:hidden}
.stat{padding:28px;text-align:center;border-right:1px solid var(--border)}
.stat:last-child{border-right:0}
.stat strong{display:block;font-size:34px;letter-spacing:-.04em}
.stat span{color:var(--muted-foreground);font-size:14px}
.case-card{padding:0;overflow:hidden}
.case-cover{height:210px;background:linear-gradient(135deg,#18181b,#52525b);display:flex;align-items:end;padding:20px;color:#fff}
.case-body{padding:22px}
.tags{display:flex;gap:8px;flex-wrap:wrap}
.tag{font-size:12px;border:1px solid var(--border);padding:4px 8px;border-radius:999px;color:#52525b;background:#fafafa}
.price-card{position:relative}
.price{font-size:38px;font-weight:800;letter-spacing:-.04em;margin:16px 0 0}
.price small{font-size:14px;color:var(--muted-foreground);font-weight:500}
.price-card.popular{border:2px solid #18181b}
.popular-badge{position:absolute;right:14px;top:14px;background:#111;color:#fff;border-radius:999px;padding:4px 8px;font-size:11px}
.price-list{display:grid;gap:10px;margin:22px 0}
.price-list div{font-size:14px;color:#3f3f46}
.testimonial{display:flex;flex-direction:column;justify-content:space-between;min-height:230px}
.quote{font-size:17px}
.person{display:flex;align-items:center;gap:12px;margin-top:24px}
.avatar{width:42px;height:42px;border-radius:50%;background:#e4e4e7}
.person small{display:block;color:#71717a}
.faq{border-top:1px solid var(--border)}
.faq-item{border-bottom:1px solid var(--border)}
.faq-q{width:100%;background:none;border:0;padding:20px 0;text-align:left;font-weight:700;display:flex;justify-content:space-between;cursor:pointer}
.faq-a{display:none;color:#71717a;padding:0 0 20px;max-width:840px}
.faq-item.open .faq-a{display:block}
.cta{background:#18181b;color:#fff;border-radius:10px;padding:54px}
.cta p{color:#d4d4d8;max-width:720px}
.footer{padding:56px 0 26px;border-top:1px solid var(--border);background:#fafafa}
.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:32px}
.footer h4{margin:0 0 14px}
.footer a{display:block;color:#71717a;margin:9px 0;font-size:14px}
.footer-bottom{border-top:1px solid var(--border);margin-top:36px;padding-top:20px;color:#71717a;font-size:13px;display:flex;justify-content:space-between}
.page-hero{padding:72px 0;border-bottom:1px solid var(--border);background:#fafafa}
.breadcrumb{font-size:13px;color:#71717a;margin-bottom:14px}
.page-hero p{max-width:760px;color:#71717a;font-size:18px}
.content{max-width:860px}
.content h2{font-size:30px;margin:38px 0 14px}
.content h3{margin:28px 0 10px}
.content p,.content li{color:#52525b}
.form{display:grid;gap:14px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field input,.field textarea,.field select{width:100%;border:1px solid var(--border);border-radius:6px;padding:12px 13px;background:#fff;outline:none}
.field input:focus,.field textarea:focus,.field select:focus{border-color:#18181b;box-shadow:0 0 0 3px rgba(24,24,27,.08)}
.field textarea{min-height:150px;resize:vertical}
.blog-card .thumb{height:180px;background:linear-gradient(135deg,#e4e4e7,#fafafa);border-radius:6px;margin-bottom:18px}
.meta{font-size:13px;color:#71717a;margin-bottom:9px}
.service-nav{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.notice{padding:14px 16px;border:1px solid var(--border);border-radius:6px;background:#fafafa;color:#52525b;font-size:14px}
@media(max-width:900px){
  .nav-links{display:none;position:absolute;left:16px;right:16px;top:68px;background:#fff;border:1px solid var(--border);padding:18px;flex-direction:column;align-items:flex-start}
  .nav-links.open{display:flex}
  .nav-actions .btn:first-child{display:none}
  .mobile-toggle{display:inline-flex}
  .hero-grid,.split,.grid-2{grid-template-columns:1fr}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .logo-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .stat-band{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
  .stat:nth-child(-n+2){border-bottom:1px solid var(--border)}
}
@media(max-width:600px){
  .hero{padding:64px 0 48px}
  h1{font-size:42px}
  .section{padding:62px 0}
  .grid-3,.grid-4,.metrics,.product-grid,.form-row{grid-template-columns:1fr}
  .logo-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:8px}
  .cta{padding:34px 24px}
  .stat-band{grid-template-columns:1fr}
  .stat{border-right:0;border-bottom:1px solid var(--border)}
  .stat:last-child{border-bottom:0}
}