:root{
  --bg:#0B1220;
  --card:#121a2b;
  --muted:#8fa1c7;
  --text:#e6ecff;
  --primary:#2B65FF;
  --primary-500:#3b75ff;
  --primary-600:#1f52e6;
  --border:#23304a;
  --accent:#10B981;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,
    "Helvetica Neue",Arial,"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);
  background:radial-gradient(1200px 600px at 80% -100px,rgba(43,101,255,.15),transparent) var(--bg);
}
img{max-width:100%;display:block}
a{text-decoration:none;color:var(--text)}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{position:sticky;top:0;background:rgba(11,18,32,.8);backdrop-filter:saturate(120%) blur(8px);z-index:50;border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;gap:10px;align-items:center;color:var(--text)}
.brand-logo{width:32px;height:32px;border-radius:8px;background:linear-gradient(135deg,var(--primary),#7c61ff);display:flex;align-items:center;justify-content:center;font-weight:700}
.brand-name{font-weight:700}
.brand-cn{opacity:.7;font-size:.9rem}
.nav{display:flex;gap:18px;align-items:center}
.nav a{opacity:.8;padding:8px 10px;border-radius:8px}
.nav a:hover,.nav a.active{opacity:1;background:rgba(255,255,255,.06)}
.nav .btn{margin-left:6px}
.nav-toggle{display:none;background:none;border:0;width:36px;height:36px;border-radius:8px}
.nav-toggle span{display:block;height:2px;background:var(--text);margin:7px 6px}

/* Hero */
.hero{position:relative;padding:40px 0 60px;border-bottom:1px solid var(--border)}
.hero-bg{position:absolute;inset:0;z-index:-1;opacity:.35}
.hero-bg img{width:100%;height:100%;object-fit:cover}
.hero-content{text-align:center}
.hero h1{font-size:2.15rem;margin:20px 0}
.hero p{color:var(--muted);max-width:780px;margin:0 auto 18px}
.hero-actions{display:flex;gap:12px;justify-content:center;margin:16px 0 8px}
.hero-sub{display:flex;gap:12px;justify-content:center;color:var(--muted);font-size:.95rem}

/* Sections */
.section{padding:50px 0;border-bottom:1px solid var(--border)}
.section-head{margin-bottom:24px}
.section-head h2{font-size:1.6rem;margin:0 0 8px}
.section-head p{color:var(--muted);margin:0}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.card-icon{font-size:24px;background:rgba(255,255,255,.06);border-radius:10px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.card h3{margin:6px 0 8px}
.card p{color:var(--muted);margin:0 0 10px}
.card-link{color:var(--primary)}
.card-link:hover{color:var(--primary-500)}

/* Highlights */
.tick-list{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:0;padding-left:18px}
.tick-list li{margin-bottom:6px}

/* Clients */
.logo-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;align-items:center}
.logo-grid img{filter:grayscale(1);opacity:.9;transition:.2s}
.logo-grid img:hover{filter:none;opacity:1}

/* CTA */
.cta{padding:50px 0;background:linear-gradient(135deg,rgba(43,101,255,.15),transparent)}
.cta-inner{text-align:center}
.btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:rgba(255,255,255,.06);color:var(--text);padding:10px 16px;border-radius:10px}
.btn:hover{background:rgba(255,255,255,.1)}
.btn-primary{background:var(--primary);border-color:var(--primary);color:white}
.btn-primary:hover{background:var(--primary-500)}
.btn-lg{padding:12px 18px;border-radius:12px}
.btn-outline{background:transparent;border-color:var(--border)}

/* Footer */
.site-footer{background:rgba(11,18,32,.9)}
.footer-inner{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:16px;padding:22px 0}
.footer-brand{display:flex;gap:12px;align-items:center}
.footer-links{display:flex;gap:10px;flex-wrap:wrap}
.footer-links a{opacity:.8}
.footer-links a:hover{opacity:1}
.footer-meta{color:var(--muted);font-size:.95rem}

/* Page hero */
.page-hero{padding:30px 0;border-bottom:1px solid var(--border)}
.page-hero h1{margin:0 0 8px}
.page-hero p{color:var(--muted);margin:0}

/* Service sections */
.service{display:grid;grid-template-columns:1.2fr 1fr;gap:18px;align-items:center}
.service-section.alt .service{grid-template-columns:1fr 1.2fr}
.bullet{margin:0;padding-left:18px}
.bullet li{margin-bottom:6px}

/* About */
.about-wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;align-items:start}
.about-media img{border-radius:12px;border:1px solid var(--border);}

/* Timeline */
.tl{position:relative;margin-left:8px}
.tl:before{content:"";position:absolute;left:6px;top:0;bottom:0;width:2px;background:var(--border)}
.tl-item{position:relative;padding-left:22px;margin-bottom:18px}
.tl-dot{position:absolute;left:-2px;top:4px;width:10px;height:10px;border-radius:50%;background:var(--primary)}
.tl-content h4{margin:0 0 6px}

/* Contact */
.contact-wrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:18px;align-items:start}
.contact-info .note{color:var(--muted)}
.contact-form{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px}
.form-row{margin-bottom:12px}
label{display:block;margin-bottom:6px}
input,textarea{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--border);background:#0f172a;color:var(--text)}
input::placeholder,textarea::placeholder{color:#6b7a99}
.form-actions{display:flex;gap:10px;margin-top:8px}

/* Responsive */
@media (max-width:900px){
  .cards{grid-template-columns:1fr 1fr}
  .tick-list{grid-template-columns:1fr}
  .logo-grid{grid-template-columns:repeat(3,1fr)}
  .service,.about-wrap,.contact-wrap,.footer-inner{grid-template-columns:1fr}
  .nav-toggle{display:block}
  .nav{position:absolute;right:20px;top:64px;background:rgba(11,18,32,.95);border:1px solid var(--border);border-radius:12px;padding:10px;display:none;flex-direction:column;min-width:200px}
  .nav.show{display:flex}
}