*{margin:0;padding:0;box-sizing:border-box}
:root{
  --blue:#2b5cff;
  --blue-d:#1a3fd4;
  --ink:#0b1729;
  --ink-2:#3a4a63;
  --muted:#6b7c94;
  --line:#e8eef7;
  --bg:#f7faff;
  --r:16px;
}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:#fff;line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{max-width:1120px;margin:0 auto;padding:0 28px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:10px;font-weight:600;cursor:pointer;border:none;
  transition:transform .2s,box-shadow .2s,background .2s;white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,#4d7bff,var(--blue-d));
  color:#fff;box-shadow:0 10px 22px -10px rgba(43,92,255,.8);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 28px -12px rgba(43,92,255,.9)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{transform:translateY(-2px);border-color:#cfdcf2}
.btn-lg{padding:14px 28px;font-size:15.5px}
.btn-sm{padding:8px 18px;font-size:14px}

/* 导航 */
.nav{
  position:fixed;top:0;left:0;right:0;z-index:100;height:64px;
  display:flex;align-items:center;
  background:rgba(255,255,255,.85);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s;
}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 4px 20px -14px rgba(15,35,80,.2)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:17px}
.logo-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,#4d7bff,var(--blue-d));
}
.logo-mark svg{width:18px;height:18px;stroke:#fff;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.nav-links{display:flex;gap:32px;font-size:14.5px;font-weight:500;color:var(--ink-2)}
.nav-links a:hover{color:var(--blue)}
.nav-actions{display:flex;gap:10px}

/* Hero */
.hero{padding:20px 0;background:linear-gradient(180deg,#f7faff 0%,#fff 80%)}
.hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.hero h1{font-size:44px;line-height:1.2;font-weight:800;letter-spacing:-1.2px;margin-bottom:20px}
.hero h1 em{
  font-style:normal;
  background:linear-gradient(120deg,#2b5cff,#ff7a45);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero p{font-size:16.5px;color:var(--muted);max-width:460px;margin-bottom:32px}
.hero-btns{display:flex;gap:12px}

/* 收银台示意 */
.mockup{
  background:#fff;border-radius:16px;overflow:hidden;
  box-shadow:0 30px 60px -24px rgba(15,35,80,.3),0 0 0 1px rgba(20,40,90,.05);
}
.mock-bar{
  height:38px;display:flex;align-items:center;gap:7px;padding:0 14px;
  background:#fbfcfe;border-bottom:1px solid var(--line);
}
.mock-bar .dot{width:8px;height:8px;border-radius:50%}
.dot.r{background:#ff5f57}.dot.y{background:#febc2e}.dot.g{background:#28c840}
.mock-bar span{margin-left:10px;font-size:12px;font-weight:700;color:var(--ink-2)}
.mock-body{display:grid;grid-template-columns:58px 1fr 150px;height:290px}
.mock-cats{background:#f8fafd;border-right:1px solid var(--line);padding:10px 6px;display:flex;flex-direction:column;gap:5px}
.mock-cat{font-size:11px;text-align:center;padding:8px 0;border-radius:8px;color:var(--muted);font-weight:600}
.mock-cat.on{background:var(--blue);color:#fff}
.mock-goods{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;padding:10px;align-content:start}
.mock-good{
  border:1px solid var(--line);border-radius:10px;padding:9px 6px;
  display:flex;flex-direction:column;align-items:center;gap:4px;
}
.mock-good .e{font-size:18px;line-height:1}
.mock-good .n{font-size:10.5px;font-weight:600;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}
.mock-good .p{font-size:10.5px;font-weight:800;color:var(--blue)}
.mock-cart{border-left:1px solid var(--line);background:#fbfcfe;padding:12px 10px;display:flex;flex-direction:column}
.mock-cart h5{font-size:11.5px;font-weight:800;margin-bottom:10px;display:flex;justify-content:space-between}
.mock-cart h5 span{color:var(--muted);font-weight:600;font-size:10.5px}
.mci{display:flex;gap:6px;font-size:11px;padding:6px 0;border-bottom:1px dashed #e8eef8;align-items:center}
.mci .n{flex:1;color:var(--ink-2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mci .q{color:var(--muted);font-size:10px}
.mci .p{font-weight:700;font-size:11px}
.mock-total{margin-top:auto;padding-top:10px;display:flex;justify-content:space-between;align-items:baseline;font-size:11.5px;color:var(--muted);font-weight:600}
.mock-total b{font-size:18px;color:var(--ink)}
.mock-pay{
  margin-top:10px;height:34px;border-radius:9px;border:none;
  background:linear-gradient(135deg,#4d7bff,var(--blue-d));color:#fff;
  font-size:12.5px;font-weight:700;
}

/* 通用区块 */
.section{padding:80px 0}
.sec-head{text-align:center;max-width:620px;margin:0 auto 48px}
.sec-head .tag{
  display:inline-block;font-size:12.5px;font-weight:800;letter-spacing:1.5px;
  color:var(--blue);text-transform:uppercase;margin-bottom:12px;
}
.sec-head h2{font-size:34px;line-height:1.3;font-weight:800;letter-spacing:-.8px;margin-bottom:14px}
.sec-head p{font-size:15.5px;color:var(--muted)}

/* 功能卡片 */
.features{display:grid;grid-template-columns:repeat(6,1fr);gap:18px}
.f-card{
  grid-column:span 2;background:#fff;border:1px solid var(--line);
  border-radius:var(--r);padding:26px 24px;
  transition:transform .3s,box-shadow .3s,border-color .3s;
}
.f-card:nth-child(4),.f-card:nth-child(5){grid-column:span 3}
.f-card:hover{transform:translateY(-4px);box-shadow:0 18px 36px -20px rgba(15,35,80,.2);border-color:#d5e1f7}
.f-ico{
  width:46px;height:46px;border-radius:13px;display:grid;place-items:center;
  margin-bottom:18px;background:#eef3ff;color:var(--blue);
}
.f-ico svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.f-card:nth-child(2) .f-ico{background:#fff0e9;color:#e8622a}
.f-card:nth-child(3) .f-ico{background:#e9f9f1;color:#0f8a5f}
.f-card:nth-child(4) .f-ico{background:#f2edff;color:#6b3fd4}
.f-card:nth-child(5) .f-ico{background:#fff6e0;color:#c98a05}
.f-card h3{font-size:18px;font-weight:800;margin-bottom:10px;letter-spacing:-.3px}
.f-card p{font-size:14px;color:var(--muted);line-height:1.75}
.f-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:16px}
.f-tags span{
  font-size:12px;font-weight:600;color:var(--ink-2);
  background:#f4f7fc;border:1px solid #e8eef8;border-radius:7px;padding:4px 10px;
}

/* 数据条 */
.stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:#fbfcfe}
.stats-inner{display:grid;grid-template-columns:repeat(4,1fr);padding:34px 0}
.stat{text-align:center;position:relative}
.stat+.stat::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:32px;background:var(--line)}
.stat b{display:block;font-size:28px;font-weight:800;letter-spacing:-1px;color:var(--ink)}
.stat b em{font-style:normal;font-size:17px;color:var(--blue)}
.stat span{font-size:13px;color:var(--muted)}

/* 数据统计 */
.data{background:var(--bg)}
.data-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.data-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:28px;
}
.data-card .label{font-size:13px;font-weight:700;color:var(--muted);margin-bottom:8px}
.data-card .big{font-size:34px;font-weight:800;letter-spacing:-1.2px;margin-bottom:4px}
.data-card .sub{font-size:13px;color:var(--muted);margin-bottom:22px}
.data-card .sub b{color:#0f8a5f;font-weight:700}
.bars{display:flex;align-items:flex-end;gap:12px;height:140px;border-bottom:1px solid var(--line)}
.bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center;gap:8px;height:100%;justify-content:flex-end}
.bar{width:100%;max-width:36px;border-radius:6px 6px 2px 2px;background:linear-gradient(180deg,#4d7bff,#1f47e0)}
.bar.peak{background:linear-gradient(180deg,#ffb27a,#ff7a45)}
.bar-wrap span{font-size:11px;color:var(--muted);font-weight:600}
.rank{display:flex;align-items:center;gap:12px;margin-top:16px}
.rank-no{
  width:24px;height:24px;border-radius:7px;display:grid;place-items:center;
  font-size:11.5px;font-weight:800;background:#f0f4fb;color:var(--muted);
}
.rank:nth-child(1) .rank-no{background:#fff3d6;color:#c98a05}
.rank:nth-child(2) .rank-no{background:#eef3ff;color:var(--blue)}
.rank:nth-child(3) .rank-no{background:#ffece2;color:#e8622a}
.rank-info{flex:1;min-width:0}
.rank-name{font-size:13.5px;font-weight:600;display:flex;justify-content:space-between;margin-bottom:6px}
.rank-name span{color:var(--muted);font-weight:500;font-size:12.5px}
.rank-bar{height:5px;border-radius:100px;background:#f0f4fb;overflow:hidden}
.rank-bar i{display:block;height:100%;border-radius:100px;background:linear-gradient(90deg,#4d7bff,#8bb0ff)}

/* CTA */
.cta-wrap{padding:80px 0}
.cta{
  border-radius:24px;padding:60px 48px;text-align:center;
  background:linear-gradient(135deg,#2b5cff,#1a3fd4 55%,#122ea8);
}
.cta h2{font-size:32px;font-weight:800;color:#fff;letter-spacing:-.8px;margin-bottom:14px}
.cta p{font-size:15.5px;color:rgba(255,255,255,.8);margin-bottom:30px}
.cta-btns{display:flex;gap:12px;justify-content:center}
.btn-white{background:#fff;color:var(--blue-d)}
.btn-white:hover{transform:translateY(-2px)}
.btn-outline{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-outline:hover{background:rgba(255,255,255,.22);transform:translateY(-2px)}

/* Footer */
footer{background:#0a1428;color:#7d93b5;padding:48px 0 28px}
.foot-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.foot-brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:16px;color:#fff}
.foot-links{display:flex;gap:24px;font-size:13.5px}
.foot-links a:hover{color:#fff}
.foot-copy{font-size:13px;width:100%;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);margin-top:24px;text-align:center}

/* 滚动动画 */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s ease;transition-delay:var(--d,0s)}
.reveal.in{opacity:1;transform:none}

/* 响应式 */
@media (max-width:1000px){
  .hero-inner{grid-template-columns:1fr;gap:48px}
  .hero h1{font-size:36px}
  .nav-links{display:none}
  .features{grid-template-columns:repeat(2,1fr)}
  .f-card,.f-card:nth-child(4),.f-card:nth-child(5){grid-column:span 1}
  .data-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .container{padding:0 20px}
  .hero{padding:120px 0 60px}
  .hero h1{font-size:28px}
  .sec-head h2{font-size:25px}
  .features,.stats-inner{grid-template-columns:1fr}
  .stat+.stat::before{display:none}
  .stat{padding:14px 0;border-top:1px solid var(--line)}
  .stat:first-child{border-top:none}
  .hero-btns,.cta-btns{flex-direction:column}
  .cta{padding:44px 24px}
  .cta h2{font-size:24px}
  .mock-body{grid-template-columns:48px 1fr 120px;height:250px}
}