*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:#0f172a;background:#f5f7fb}a{text-decoration:none;color:inherit}img{max-width:100%;height:auto;display:block}
:root{--primary:#2563eb;--primary-2:#1d4ed8;--ink:#0f172a;--muted:#64748b;--card:#ffffff;--line:#e2e8f0;--bg:#f5f7fb;--shadow:0 16px 40px rgba(15,23,42,.08)}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.topbar{position:sticky;top:0;z-index:50;background:#ffffffd9;backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:40px;width:auto;object-fit:contain}
.brand strong{font-size:18px}
.brand span{display:block;color:var(--muted);font-size:12px}
.nav{display:flex;gap:10px;align-items:center;z-index:60;position:static;transform:none;opacity:1;pointer-events:auto;flex-direction:row}
.nav-link{border:1px solid var(--line);background:#fff;color:#0f172a;border-radius:999px;padding:9px 16px;font-size:13px;cursor:pointer;transition:.2s;box-shadow:0 6px 16px rgba(15,23,42,.06)}
.nav-link:hover{transform:translateY(-1px);border-color:var(--primary);color:var(--primary)}
.menu-btn{display:none;border:1px solid var(--line);background:#0f172a;color:#fff;border-radius:10px;padding:8px 10px;font-size:18px;line-height:1;box-shadow:0 8px 18px rgba(15,23,42,.2)}
.nav-backdrop{display:none}
.hero{padding:50px 0 20px;background:radial-gradient(1200px 400px at 10% 0,#dbeafe,transparent)}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center}
.tag{display:inline-block;background:#e0ecff;color:#1d4ed8;border-radius:999px;padding:6px 12px;font-size:12px;margin-bottom:12px}
.hero h1{font-size:34px;line-height:1.25;margin:0 0 10px}
.hero p{color:var(--muted);margin:0 0 16px}
.btn-row{display:flex;gap:12px;flex-wrap:wrap}
.btn{border-radius:999px;padding:10px 18px;border:1px solid var(--line);background:#fff;cursor:pointer;transition:.2s;font-weight:600}
.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn.primary:hover{background:var(--primary-2)}
.btn.ghost:hover{border-color:var(--primary);color:var(--primary)}
.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}
.badge-row span{background:#f1f5f9;border:1px solid var(--line);border-radius:999px;padding:6px 10px;font-size:12px}
.hero-media{position:relative;display:grid;place-items:center}
.hero-media img{border-radius:22px;box-shadow:var(--shadow)}
.hero-media .floating{position:absolute;right:-10px;bottom:-30px;width:52%;border-radius:18px;animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
.band{height:28px;background:linear-gradient(90deg,#2563eb,#60a5fa);margin:20px 0}
.section{padding:50px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:18px}
.section-head h2{margin:0;font-size:24px}
.section-head p{margin:4px 0 0;color:var(--muted)}
.split{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.media img{border-radius:18px;box-shadow:var(--shadow)}
.content h2{margin:0 0 10px}
.content p{color:var(--muted)}
.mini{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:14px 0}
.mini div{background:#f8fafc;border:1px solid var(--line);padding:10px;border-radius:12px}
.cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.cards article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:16px;box-shadow:var(--shadow);transition:.2s}
.cards article:hover{transform:translateY(-4px)}
.cards .link{color:var(--primary);font-weight:600}
.platforms{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.platform{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}
.platform h4{margin:0 0 6px}
.platform p{color:var(--muted);margin:0 0 12px}
.plat-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.plat-head img{width:26px;height:26px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 16px;margin-bottom:10px;box-shadow:var(--shadow)}
.faq summary{cursor:pointer;font-weight:600}
.faq p{color:var(--muted)}
.logo-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:14px}
.logo-grid.partners{grid-template-columns:repeat(5,minmax(0,1fr))}
.logo-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px;display:grid;place-items:center;gap:6px;box-shadow:var(--shadow)}
.logo-item img{width:34px;height:34px}
.logo-item span{font-size:12px;color:var(--muted)}
.site-foot{background:#0b1220;color:#e2e8f0;padding:30px 0;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:20px}
.site-foot a{color:#cbd5f5}
.site-foot h4{margin:0 0 10px}
.copy{border-top:1px solid rgba(148,163,184,.2);margin-top:18px;padding-top:12px;font-size:12px;color:#94a3b8}

@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .cards,.platforms{grid-template-columns:repeat(2,minmax(0,1fr))}
  .logo-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .logo-grid.partners{grid-template-columns:repeat(3,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:640px){
  .menu-btn{display:inline-flex;position:fixed;right:12px;top:12px;z-index:90;border-radius:12px;padding:10px 12px;background:#0f172a;color:#fff;border:0;box-shadow:0 12px 30px rgba(15,23,42,.28)}
  .nav{
    position:fixed;left:12px;right:12px;top:64px;transform:translateY(-10px);
    width:auto;max-width:520px;margin:0 auto;background:#ffffff;border-radius:20px;
    padding:16px;box-shadow:0 24px 70px rgba(0,0,0,.28);
    transition:.22s ease;z-index:85;gap:12px;opacity:0;pointer-events:none;
    display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch
  }
  .nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav-link{
    width:100%;text-align:center;font-size:15px;background:#f8fafc;
    border-radius:16px;padding:14px 12px;white-space:nowrap
  }
  .nav-backdrop{background:rgba(15,23,42,.45);z-index:80;display:none}
  .nav-backdrop.show{display:block}
  .brand span{display:none}
  .topbar{padding-bottom:6px}
}