:root{
  --bg:#0b1020;
  --bg-soft:#121932;
  --card:#0f1730;
  --primary:#2d7dff;
  --primary-2:#5aa1ff;
  --text:#e8eefc;
  --muted:#93a4c3;
  --accent:#18e0ae;
  --danger:#ff6b6b;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:linear-gradient(180deg,var(--bg),#0a0f1a);color:var(--text);font:16px/1.6 system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial;}
a{color:var(--primary);text-decoration:none}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
.nav{position:sticky;top:0;z-index:50;background:rgba(10,15,26,.7);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.06)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;gap:10px;align-items:center;font-weight:700;letter-spacing:.4px}
.brand .dot{width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.nav a{margin:0 12px;color:var(--text)}
.cta{background:var(--primary);color:white;padding:10px 16px;border-radius:12px;box-shadow:var(--shadow);}
.cta:hover{background:var(--primary-2)}
.mobile-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.15);color:var(--text);padding:8px 10px;border-radius:10px}
@media(max-width:860px){
  .nav .links{display:none}
  .mobile-toggle{display:block}
}
.hero{padding:80px 0 40px;position:relative;overflow:hidden}
.hero .grid{display:grid;grid-template-columns:1.3fr 1fr;gap:40px;align-items:center}
.hero h1{font-size:44px;line-height:1.15;margin:0 0 16px}
.hero p{color:var(--muted);margin:0 0 24px}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 26px}
.badge{padding:6px 10px;border-radius:999px;border:1px solid rgba(255,255,255,.12);color:var(--primary-2);background:rgba(45,125,255,.08)}
.card{background:linear-gradient(180deg,var(--card),#0b1430);border:1px solid rgba(255,255,255,.05);border-radius:16px;box-shadow:var(--shadow)}
.card.pad{padding:18px}
.code{font-family:ui-monospace,SFMono-Regular,Consolas,Monaco,monospace;background:#0b1226;color:#cbe1ff;border-radius:12px;padding:14px;overflow:auto}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 16px;border-radius:12px;border:1px solid rgba(255,255,255,.15);color:var(--text)}
.btn.primary{background:var(--primary);border-color:transparent}
.section{padding:56px 0}
.section h2{font-size:28px;margin:0 0 16px}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.kpis .item{padding:18px}
.kpis .num{font-size:28px;font-weight:800}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media(max-width:860px){
  .hero .grid{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
}
.footer{padding:28px 0;border-top:1px solid rgba(255,255,255,.08);color:var(--muted)}
.table{width:100%;border-collapse:separate;border-spacing:0 10px}
.table th{color:#9fb2da;text-align:left;font-weight:600;padding:10px}
.table td{padding:14px;background:rgba(255,255,255,.03);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06)}
.table tr td:first-child{border-left:1px solid rgba(255,255,255,.06);border-radius:12px 0 0 12px}
.table tr td:last-child{border-right:1px solid rgba(255,255,255,.06);border-radius:0 12px 12px 0}
.alert{padding:10px 12px;border:1px dashed rgba(255,255,255,.18);border-radius:12px;color:var(--muted)}
.pricing-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media(max-width:1024px){.pricing-cards{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.pricing-cards{grid-template-columns:1fr}}
.tag{font-size:12px;padding:4px 8px;border:1px solid rgba(255,255,255,.15);border-radius:999px;color:var(--muted)}
.price{font-size:26px;font-weight:800}
hr.sep{border:0;border-top:1px solid rgba(255,255,255,.08);margin:24px 0}
.list{margin:0;padding:0 0 0 18px;color:var(--muted)}
.notice{font-size:16px;color:#9bb0d4}

/* ✅ 新增部分：商务合作与二维码并排布局 */
.business-contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;     /* 在小屏幕时自动换行 */
  gap: 16px;
}
.business-contact .info {
  flex: 1;
  min-width: 220px;
}
.qrcode {
  text-align: center;
}
.qrcode img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
  border: 2px solid var(--primary); /* 使用品牌蓝色 */
  box-shadow: 0 0 10px rgba(45,125,255,.5); /* 发光科技感 */
  transition: all .3s ease;
}
.qrcode img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 18px rgba(90,161,255,.8);
}
.qrcode p {
  color: var(--primary-2);
  margin-top: 6px;
  font-size: 14px;
}