/* 基础变量 */
:root{
  --bg:#0b1220;
  --panel:#0f172a;
  --panel-2:#111827;
  --text:#e5e7eb;
  --muted:#94a3b8;
  --brand:#3b82f6;
  --brand-2:#60a5fa;
  --border:rgba(148,163,184,.18);
  --shadow:0 10px 30px rgba(2,6,23,.45);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,"Noto Sans SC","PingFang SC","Microsoft Yahei",sans-serif;
  color:var(--text);
  background:radial-gradient(1200px 600px at 70% -10%,rgba(59,130,246,.15),transparent 60%),
             radial-gradient(800px 400px at -10% 0,rgba(34,197,94,.09),transparent 50%),
             var(--bg);
  line-height:1.6;
}

.container{width:min(1120px,92%);margin:0 auto}

/* Header */
.site-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:20px 0;
}
.brand{display:flex;gap:14px;align-items:center}
.logo{
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));
  display:grid;place-items:center;font-weight:800;color:#fff;
  box-shadow:var(--shadow)
}
.brand-title{margin:0;font-size:20px}
.brand-subtitle{margin:2px 0 0;color:var(--muted);font-size:12px}

.nav{display:flex;gap:18px}
.nav a{color:var(--text);text-decoration:none;opacity:.8}
.nav a:hover{opacity:1;color:#fff}

/* Hero */
.hero{padding:36px 0 18px}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}
.hero-text h2{font-size:36px;margin:0 0 8px}
.hero-text p{color:var(--muted);margin:0 0 16px}
.hero-cta{display:flex;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border:1px solid var(--border);border-radius:10px;color:var(--text);text-decoration:none;background:rgba(17,24,39,.6);backdrop-filter:blur(8px)}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff;border-color:transparent}
.btn .i{width:18px;height:18px}

.card{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));border:1px solid var(--border);border-radius:14px;overflow:hidden}
.shadow{box-shadow:var(--shadow)}
.card img{display:block;width:100%;height:auto}

/* Sections */
.section{padding:36px 0}
.section-hd h3{display:flex;align-items:center;gap:8px;margin:0 0 6px;font-size:20px}
.section-hd p{margin:0;color:var(--muted)}
.section-hd .i{width:18px;height:18px}

.grid.two{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-top:18px}
.grid.two.reverse{grid-template-columns:1fr 1fr}
.grid.two.reverse .card{order:2}

.info-list{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));border:1px solid var(--border);border-radius:14px;padding:16px}
.info-row{display:grid;grid-template-columns:140px 1fr;gap:10px;padding:10px 8px;border-bottom:1px dashed var(--border)}
.info-row:last-child{border-bottom:none}
.label{color:var(--muted)}
.value{color:var(--text);display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.value .ext{display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:6px;background:rgba(59,130,246,.12);color:var(--brand)}

/* Services */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.service-card{padding:16px}
.service-card .icon{width:36px;height:36px;border-radius:10px;background:rgba(59,130,246,.14);display:grid;place-items:center;color:var(--brand);margin-bottom:8px}
.service-card h4{margin:4px 0 6px}
.service-card p{margin:0;color:var(--muted)}

/* Advantages */
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:18px}
.feature-item{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));border:1px solid var(--border);border-radius:14px;padding:16px}
.feature-item .badge{width:28px;height:28px;border-radius:8px;background:rgba(148,163,184,.18);display:grid;place-items:center;margin-bottom:6px;color:#fff}
.feature-item .t{font-weight:600}
.feature-item .d{color:var(--muted);margin-top:4px}

/* Process */
.timeline{list-style:none;margin:18px 0 0;padding:0;display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.step{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));border:1px solid var(--border);border-radius:14px;padding:14px;display:grid;gap:4px}
.step .n{width:22px;height:22px;border-radius:50%;background:rgba(59,130,246,.16);color:#fff;display:grid;place-items:center;font-size:12px}
.step .t{font-weight:600}
.step .d{color:var(--muted)}

/* FAQ */
.faq{margin-top:18px;display:grid;gap:10px}
.faq details{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,.01));border:1px solid var(--border);border-radius:12px;padding:10px 14px}
.faq summary{cursor:pointer;outline:none}
.faq .content{color:var(--muted);padding-top:6px}

/* Partners */
.partners-grid{margin-top:18px;display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.logo-tile{border:1px dashed var(--border);border-radius:10px;padding:14px;text-align:center;color:var(--muted);background:rgba(17,24,39,.4)}

/* Contact */
.contact-card{padding:16px}
.contact-item{display:grid;grid-template-columns:100px 1fr;gap:10px;padding:8px 0;border-bottom:1px dashed var(--border)}
.contact-item:last-child{border-bottom:none}
.contact-tip{margin-top:10px;color:var(--muted);font-size:14px}
.contact-card a{color:#cfe1ff}

/* Footer */
.site-footer{border-top:1px solid var(--border);margin-top:28px}
.footer-inner{display:flex;align-items:center;justify-content:space-between;padding:18px 0;color:var(--muted)}
.footer-inner a{color:var(--muted);text-decoration:none}
.footer-inner a:hover{color:#fff}

/* Utilities */
.i{width:16px;height:16px}

/* 响应式 */
@media (max-width: 960px){
  .hero-inner{grid-template-columns:1fr}
  .grid.two{grid-template-columns:1fr}
  .grid.two.reverse .card{order:0}
  .services-grid{grid-template-columns:1fr}
  .features{grid-template-columns:1fr 1fr}
  .timeline{grid-template-columns:1fr}
  .partners-grid{grid-template-columns:1fr 1fr}
}