:root{
  --brand:#185FA5;
  --brand-dark:#0C447C;
  --accent:#0F6E56;
  --bg:#ffffff;
  --bg-soft:#f4f8fc;
  --text:#1f2933;
  --muted:#5f6b7a;
  --border:#e3e9f0;
  --radius:12px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);line-height:1.75;background:var(--bg);font-size:16px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container{max-width:960px;margin:0 auto;padding:0 20px}

/* header */
header.nav{position:sticky;top:0;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);z-index:20}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;color:var(--brand-dark);font-size:17px}
.logo .mark{width:30px;height:30px;border-radius:8px;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;font-size:15px}
.nav-links{display:flex;gap:18px;font-size:14px}
.nav-links a{color:var(--muted)}
.nav-cta{background:var(--brand);color:#fff;padding:8px 14px;border-radius:8px;font-size:14px}
.nav-cta:hover{background:var(--brand-dark);text-decoration:none}

/* hero */
.hero{background:linear-gradient(180deg,var(--bg-soft),#fff);padding:48px 0 40px}
.hero h1{font-size:30px;line-height:1.3;color:var(--brand-dark);margin-bottom:14px}
.hero p.lead{font-size:17px;color:var(--muted);max-width:620px;margin-bottom:22px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:28px}
.btn-primary{background:var(--brand);color:#fff;padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px}
.btn-primary:hover{background:var(--brand-dark);text-decoration:none}
.btn-ghost{border:1px solid var(--border);color:var(--brand-dark);padding:12px 22px;border-radius:10px;font-weight:600;font-size:15px}
.btn-ghost:hover{background:var(--bg-soft);text-decoration:none}
.qr-card{display:inline-flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:14px 18px;box-shadow:0 4px 18px rgba(12,68,124,.06)}
.qr-box{width:96px;height:96px;border:2px dashed var(--brand);border-radius:10px;display:flex;align-items:center;justify-content:center;color:var(--brand);font-size:12px;text-align:center;padding:6px}
.qr-card .qr-text{font-size:13px;color:var(--muted);max-width:160px}

/* sections */
section{padding:40px 0}
.section-title{font-size:22px;color:var(--brand-dark);margin-bottom:8px}
.section-sub{color:var(--muted);margin-bottom:24px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.card{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:18px}
.card h3{font-size:16px;color:var(--brand-dark);margin-bottom:6px}
.card p{font-size:14px;color:var(--muted)}

/* table */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:14px;min-width:520px}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--border)}
th{background:var(--bg-soft);color:var(--brand-dark);font-weight:600}
tr:last-child td{border-bottom:none}

/* faq */
.faq-item{border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin-bottom:12px}
.faq-item h3{font-size:15px;color:var(--brand-dark);margin-bottom:6px}
.faq-item p{font-size:14px;color:var(--muted)}

/* cta band */
.cta-band{background:var(--brand-dark);color:#fff;border-radius:var(--radius);padding:28px;text-align:center}
.cta-band h2{font-size:20px;margin-bottom:8px}
.cta-band p{color:#cfe0f2;margin-bottom:18px;font-size:14px}
.cta-band .btn-primary{background:#fff;color:var(--brand-dark)}
.cta-band .btn-primary:hover{background:#eaf1f9}

/* footer */
footer{border-top:1px solid var(--border);padding:28px 0;color:var(--muted);font-size:13px}
footer a{color:var(--muted)}
.footer-links{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:12px}
.beian{font-size:12px;color:#9aa0aa}
.beian a{color:#9aa0aa;text-decoration:none}
.beian a:hover{text-decoration:underline}

@media (max-width:640px){
  .nav-links{display:none}
  .hero h1{font-size:24px}
  .hero p.lead{font-size:15px}
}