:root{
  --bg:#ffffff; --bg2:#faf6f8; --panel:#ffffff;
  --ink:#1b2130; --ink2:#394150; --muted:#6b7280; --line:#eceaef;
  --brand:#c22f63; --brand-d:#a2244f; --brand-l:#d9467a;
  --brand-50:#fdf2f6; --brand-100:#fbe6ee;
  --shadow:0 10px 30px -12px rgba(162,36,79,.18);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,sans-serif;
  line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-d)}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* 顶栏 */
header.nav{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.82);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:9px;font-weight:800;font-size:19px;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand .dot{width:12px;height:12px;border-radius:4px;background:linear-gradient(135deg,var(--brand-l),var(--brand-d))}
.nav nav a{color:var(--ink2);margin-left:24px;font-size:14.5px;font-weight:500}
.nav nav a:hover{color:var(--brand)}

/* hero */
.hero{position:relative;padding:92px 0 76px;overflow:hidden;
  background:
   radial-gradient(760px 380px at 86% -8%,var(--brand-50),transparent 70%),
   radial-gradient(620px 360px at -6% 8%,#fef4f8,transparent 70%),
   var(--bg)}
.kicker{display:inline-block;font-size:13px;font-weight:600;color:var(--brand);background:var(--brand-50);border:1px solid var(--brand-100);padding:6px 13px;border-radius:999px}
.hero h1{font-size:50px;line-height:1.12;margin:22px 0 18px;font-weight:800;letter-spacing:-1px;color:#141821}
.hero h1 .g{background:linear-gradient(110deg,var(--brand-l),var(--brand-d));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18.5px;color:var(--ink2);max-width:640px;margin:0 0 30px}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:12px;font-weight:600;font-size:15px;transition:all .15s}
.btn.primary{background:var(--brand);color:#fff;box-shadow:var(--shadow)}
.btn.primary:hover{background:var(--brand-d);color:#fff;transform:translateY(-1px)}
.btn.ghost{border:1px solid var(--line);color:var(--ink);background:#fff}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}

/* 区块 */
section{padding:72px 0}
section h2{font-size:32px;font-weight:800;margin:0 0 10px;letter-spacing:-.4px;color:#141821}
section .sub{color:var(--muted);margin:0 0 40px;font-size:16.5px;max-width:620px}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid.two{grid-template-columns:repeat(2,1fr)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:26px;transition:all .18s}
.card:hover{border-color:var(--brand-100);box-shadow:var(--shadow);transform:translateY(-2px)}
.card .ic{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:13px;background:var(--brand-50);font-size:24px}
.card h3{margin:14px 0 8px;font-size:18.5px;color:var(--ink)}
.card p{margin:0;color:var(--ink2);font-size:14.5px}
.card .tag{display:inline-block;margin-top:16px;font-size:12.5px;font-weight:600;color:var(--brand)}
.card .tag a{color:var(--brand)}

/* 流程 */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:18px;padding:26px;position:relative}
.step .n{counter-increment:s;display:inline-flex;width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,var(--brand-l),var(--brand-d));color:#fff;font-weight:800;font-size:16px;align-items:center;justify-content:center;box-shadow:var(--shadow)}
.step .n::before{content:counter(s)}
.step h3{margin:14px 0 6px;font-size:17px;color:var(--ink)}
.step p{margin:0;color:var(--ink2);font-size:14.5px}

/* 产品亮点 */
.feat{display:flex;gap:14px;align-items:flex-start;padding:20px 0;border-top:1px solid var(--line)}
.feat:first-of-type{border-top:0}
.feat .ck{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:8px;background:var(--brand-50);color:var(--brand);font-weight:800;flex:none}
.feat h3{margin:0 0 5px;font-size:17px;color:var(--ink)}
.feat p{margin:0;color:var(--ink2);font-size:15px}

/* CTA + footer */
.cta{background:linear-gradient(120deg,var(--brand),var(--brand-d));border-radius:22px;padding:52px 40px;text-align:center;color:#fff;box-shadow:var(--shadow)}
.cta h2{font-size:28px;margin:0 0 10px;color:#fff}
.cta p{color:rgba(255,255,255,.9);margin:0 0 24px}
.cta .btn.primary{background:#fff;color:var(--brand)}
.cta .btn.primary:hover{background:#fff;color:var(--brand-d)}
.cta .btn.ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.cta .btn.ghost:hover{border-color:#fff;color:#fff}
footer.ft{border-top:1px solid var(--line);padding:34px 0;color:var(--muted);font-size:13.5px}
footer.ft .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}

@media(max-width:760px){
  .hero{padding:64px 0 56px}
  .hero h1{font-size:35px}
  .grid,.grid.two,.steps{grid-template-columns:1fr}
  .nav nav{display:none}
  .cta{padding:40px 24px}
}