:root{
  --bg:#f6f7f9;
  --panel:#ffffff;
  --text:#101114;
  --muted:#6b7078;
  --line:#e8e9ec;
  --accent:#111827;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: Inter, "SF Pro Display", "PingFang SC","Microsoft YaHei",Arial,sans-serif;
  background:var(--bg); color:var(--text); -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
.topbar{
  position:sticky;top:0;z-index:20;height:68px;display:flex;align-items:center;justify-content:space-between;
  padding:0 max(24px,calc((100vw - 1180px)/2));background:rgba(246,247,249,.88);
  backdrop-filter:blur(18px);border-bottom:1px solid rgba(0,0,0,.05)
}
.brand{font-size:21px;font-weight:900;letter-spacing:3px}
.nav{display:flex;gap:28px;font-size:14px;color:#3e4249}
.nav a:hover{color:#000}
.menu-btn{display:none;background:none;border:0;font-size:22px}
.hero{
  max-width:1180px;margin:auto;min-height:670px;padding:90px 24px 80px;
  display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center
}
.eyebrow,.section-title>span,.contact-box>span{
  font-size:12px;font-weight:800;letter-spacing:2.2px;color:#747983
}
.hero h1{font-size:68px;line-height:1.04;letter-spacing:-4px;margin:20px 0 26px}
.hero-text{max-width:640px;font-size:19px;line-height:1.8;color:#5c616a}
.hero-actions{display:flex;gap:12px;margin-top:36px}
.btn{padding:15px 22px;border-radius:12px;font-weight:750;font-size:15px}
.btn.primary{background:#101114;color:#fff}
.btn.secondary{border:1px solid #d9dbe0;background:#fff}
.trust-row{display:flex;align-items:center;gap:12px;margin-top:34px;font-size:13px;color:#777c84}
.trust-row i{width:3px;height:3px;border-radius:50%;background:#aeb2b8}
.hero-card{
  background:#121318;border-radius:22px;padding:18px;box-shadow:0 30px 70px rgba(17,24,39,.18);
  color:#fff;min-height:420px;transform:rotate(1deg)
}
.window-head{display:flex;align-items:center;gap:7px;color:#8d929a;font-size:11px}
.window-head span{width:8px;height:8px;border-radius:50%;background:#444852}
.window-head b{margin-left:auto;font-weight:600}
.mock-kpis{display:grid;grid-template-columns:1fr 1.35fr;gap:10px;margin:28px 0 18px}
.mock-kpis div{background:#1c1e25;border:1px solid #282b33;border-radius:14px;padding:17px}
.mock-kpis small{display:block;color:#8f949d;margin-bottom:10px}
.mock-kpis strong{display:block;font-size:25px}
.mock-kpis em{font-size:11px;color:#b8efc5;font-style:normal}
.mock-chart{height:130px;background:#1a1c22;border-radius:14px;padding:22px 16px 10px;display:flex;gap:8px;align-items:end}
.bar{flex:1;background:linear-gradient(180deg,#d8dde8,#69717f);border-radius:5px 5px 2px 2px}
.b1{height:28%}.b2{height:46%}.b3{height:39%}.b4{height:67%}.b5{height:53%}.b6{height:81%}.b7{height:73%}
.mock-list{margin-top:14px}
.mock-list div{display:flex;justify-content:space-between;padding:13px 4px;border-bottom:1px solid #272a31;font-size:12px;color:#aeb3bc}
.mock-list b{color:#fff}
.problem-strip{max-width:1180px;margin:0 auto 40px;padding:24px;border-top:1px solid var(--line)}
.problem-strip p{font-weight:750;font-size:18px}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips span{background:#fff;border:1px solid var(--line);padding:9px 12px;border-radius:999px;font-size:13px;color:#555a62}
.section{max-width:1180px;margin:0 auto;padding:110px 24px}
.section-title{max-width:720px;margin-bottom:54px}
.section-title h2{font-size:46px;letter-spacing:-2.2px;margin:12px 0 18px}
.section-title p{color:#686d75;line-height:1.8;font-size:17px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;min-height:250px}
.icon{font-size:12px;font-weight:800;color:#9a9ea6;margin-bottom:45px}
.card h3{font-size:21px;margin:0 0 12px}
.card p{color:#686d75;line-height:1.7;font-size:14px}
.dark{max-width:none;background:#101114;color:#fff;padding-left:max(24px,calc((100vw - 1132px)/2));padding-right:max(24px,calc((100vw - 1132px)/2))}
.section-title.light span{color:#858b94}.section-title.light h2{color:#fff}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#30323a;border:1px solid #30323a}
.step{background:#16171c;padding:32px;min-height:245px}
.step b{font-size:12px;color:#747a84}
.step h3{margin-top:52px;font-size:20px}
.step p{color:#969ca5;line-height:1.7;font-size:14px}
.demo-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:14px}
.demo-card{border:1px solid var(--line);background:#fff;border-radius:20px;padding:30px;min-height:260px;display:flex;flex-direction:column;justify-content:space-between}
.demo-card.live:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(0,0,0,.08)}
.demo-card{transition:.2s}
.status{font-size:11px;font-weight:800;letter-spacing:1.2px;color:#8a8f96}
.demo-card h3{font-size:26px;margin:18px 0 10px}
.demo-card p{color:#6a6f77;line-height:1.7;max-width:480px}
.demo-card strong{font-size:14px}
.demo-card.muted{background:#eef0f3;color:#7b8088}
.contact{padding-bottom:120px}
.contact-box{background:#fff;border:1px solid var(--line);border-radius:24px;padding:50px}
.contact-box h2{font-size:44px;letter-spacing:-2px;margin:14px 0}
.contact-box p{color:#686d75;max-width:680px;line-height:1.8}
.contact-note{margin-top:28px;display:inline-block;padding:12px 15px;border-radius:10px;background:#f4f5f7;color:#777c84;font-size:13px}
footer{max-width:1180px;margin:auto;padding:45px 24px 60px;border-top:1px solid var(--line);color:#737881}
footer p{font-size:13px} footer small{font-size:12px}.foot-brand{display:inline-block;color:#111;margin-bottom:8px}


.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.price-card{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px;min-height:230px;display:flex;flex-direction:column}
.price-card>span{font-size:12px;font-weight:800;color:#858a92;letter-spacing:.6px}
.price-card strong{font-size:28px;letter-spacing:-1px;margin:34px 0 16px}.price-card strong small{font-size:13px;letter-spacing:0;color:#737881}
.price-card p{margin:auto 0 0;color:#686d75;line-height:1.7;font-size:14px}.price-card.featured{background:#121318;color:#fff;border-color:#121318;box-shadow:0 18px 45px rgba(17,24,39,.12)}
.price-card.featured>span,.price-card.featured p{color:#aeb3bc}.price-note{margin-top:14px;border:1px solid var(--line);border-radius:14px;padding:16px 18px;color:#666b73;font-size:13px;background:#f0f2f5}
.live-status{color:#267a46}.internal-link{color:#9a9ea6}.internal-link:hover{color:#111}

@media(max-width:900px){
  .nav{display:none;position:absolute;top:68px;left:0;right:0;background:#f6f7f9;border-bottom:1px solid var(--line);padding:18px 24px;flex-direction:column;gap:18px}
  .nav.open{display:flex}.menu-btn{display:block}
  .hero{grid-template-columns:1fr;padding-top:62px;gap:42px;min-height:auto}
  .hero h1{font-size:52px}
  .hero-card{max-width:620px;width:100%;margin:auto}
  .cards,.steps,.price-grid{grid-template-columns:1fr 1fr}
  .demo-grid{grid-template-columns:1fr}
}
@media(max-width:560px){
  .topbar{height:62px;padding:0 18px}.nav{top:62px}
  .hero{padding:48px 18px 60px}
  .eyebrow{font-size:10px}
  .hero h1{font-size:42px;letter-spacing:-2.6px;margin-top:16px}
  .hero-text{font-size:16px;line-height:1.75}
  .hero-actions{flex-direction:column}.btn{text-align:center}
  .hero-card{min-height:370px;padding:14px}
  .mock-kpis strong{font-size:20px}
  .problem-strip{padding:22px 18px}
  .section{padding:78px 18px}
  .section-title h2{font-size:35px;letter-spacing:-1.5px}
  .cards,.steps,.price-grid{grid-template-columns:1fr}
  .card{min-height:205px}.icon{margin-bottom:32px}
  .dark{padding-left:18px;padding-right:18px}
  .step{min-height:190px}.step h3{margin-top:35px}
  .contact-box{padding:30px 24px}.contact-box h2{font-size:34px}
  footer{padding:36px 18px 50px}
}