:root{
  --blue:#2f6fed; --blue-d:#1f56c4; --green:#2e9e54; --amber:#c8720a;
  --purple:#8a3ad1; --ink:#1d2330; --sub:#5b6577; --line:#e7eaf0;
  --bg:#f5f6fa; --card:#ffffff; --radius:14px; --shadow:0 6px 24px rgba(31,42,68,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-weight:600;font-size:15px;
  background:var(--blue);color:#fff;transition:.2s;box-shadow:0 6px 16px rgba(47,111,237,.28)}
.btn:hover{background:var(--blue-d);transform:translateY(-1px)}
.btn.ghost{background:#fff;color:var(--blue);border:1.5px solid var(--blue)}
.btn.green{background:var(--green);box-shadow:0 6px 16px rgba(46,158,84,.28)}
.btn.green:hover{background:#258046}
.btn.amber{background:var(--amber);box-shadow:0 6px 16px rgba(200,114,10,.28)}
.btn.amber:hover{background:#a85f08}
.btn.lg{padding:15px 34px;font-size:16px}

/* Header */
.hd{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line)}
.hd .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--ink)}
.logo .mk{width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,var(--blue),var(--purple));
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:18px}
.nav{display:flex;gap:26px;align-items:center}
.nav a{font-size:15px;color:var(--sub);font-weight:500;transition:.15s}
.nav a:hover,.nav a.active{color:var(--blue)}
.hd-cta{display:flex;gap:10px;align-items:center}
.menu-btn{display:none;background:none;border:0;font-size:26px;cursor:pointer;color:var(--ink)}

/* Hero */
.hero{background:radial-gradient(1200px 500px at 80% -10%,rgba(138,58,209,.12),transparent),
  radial-gradient(900px 500px at 0% 0%,rgba(47,111,237,.14),transparent),#fff;
  padding:74px 0 64px;border-bottom:1px solid var(--line)}
.hero .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.tag{display:inline-block;background:rgba(47,111,237,.1);color:var(--blue);font-weight:600;
  font-size:13px;padding:5px 14px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;letter-spacing:-.5px}
.hero h1 .hl{background:linear-gradient(120deg,var(--blue),var(--purple));-webkit-background-clip:text;
  background-clip:text;color:transparent}
.hero p.lead{font-size:18px;color:var(--sub);margin:20px 0 30px}
.hero .acts{display:flex;gap:14px;flex-wrap:wrap}
.hero .stats{display:flex;gap:26px;margin-top:34px}
.hero .stats .n{font-size:30px;font-weight:800;color:var(--ink)}
.hero .stats .l{font-size:13px;color:var(--sub)}
.hero-card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:26px;box-shadow:var(--shadow)}
.hero-card h3{font-size:17px;margin-bottom:14px}
.hero-card ul{list-style:none;display:grid;gap:12px}
.hero-card li{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--sub)}
.hero-card li b{color:var(--ink)}
.dot{width:8px;height:8px;border-radius:50%;background:var(--green);margin-top:8px;flex:0 0 auto}

/* Sections */
section{padding:64px 0}
.sec-head{text-align:center;max-width:720px;margin:0 auto 40px}
.sec-head .k{color:var(--blue);font-weight:700;font-size:14px;letter-spacing:1px}
.sec-head h2{font-size:32px;font-weight:800;margin:10px 0 12px}
.sec-head p{color:var(--sub);font-size:16px}

/* Cards grid */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(31,42,68,.12)}
.card .ic{width:48px;height:48px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  font-size:22px;margin-bottom:14px}
.card h3{font-size:18px;margin-bottom:8px}
.card p{color:var(--sub);font-size:14.5px}
.ic.b{background:rgba(47,111,237,.12)}
.ic.g{background:rgba(46,158,84,.12)}
.ic.a{background:rgba(200,114,10,.12)}
.ic.p{background:rgba(138,58,209,.12)}

/* Course */
.course{display:flex;gap:18px;align-items:flex-start}
.course .num{width:46px;height:46px;border-radius:12px;background:var(--blue);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px;flex:0 0 auto}
.course h3{margin-bottom:6px}
.course p{color:var(--sub);font-size:14.5px}
.pill{display:inline-block;font-size:12px;font-weight:600;padding:3px 10px;border-radius:999px;
  background:rgba(47,111,237,.1);color:var(--blue);margin-top:10px}

/* Companion ladder */
.ladder{display:grid;gap:12px}
.lrow{display:grid;grid-template-columns:140px 1fr 110px;align-items:center;gap:14px;
  background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 18px}
.lrow .rn{font-weight:700;font-size:15px}
.lrow .bar{height:10px;border-radius:999px;background:linear-gradient(90deg,var(--c1),var(--c2))}
.lrow .pay{text-align:right;font-weight:800;color:var(--ink)}
.lrow.lq{--c1:#7fb2ff;--c2:#2f6fed}
.lrow.zj{--c1:#7fd6a0;--c2:#2e9e54}
.lrow.jd{--c1:#f0c178;--c2:#c8720a}
.lrow.yy{--c1:#c79bf0;--c2:#8a3ad1}
.realm-title{font-weight:800;font-size:18px;margin:22px 0 6px;display:flex;align-items:center;gap:10px}
.realm-title .sw{width:14px;height:14px;border-radius:4px}

/* Partner tiers */
.tier{position:relative;overflow:hidden}
.tier.feat{border:2px solid var(--blue);box-shadow:0 14px 34px rgba(47,111,237,.18)}
.tier .badge{position:absolute;top:14px;right:-34px;transform:rotate(45deg);background:var(--blue);color:#fff;
  font-size:12px;font-weight:700;padding:5px 40px}
.tier h3{font-size:20px;margin-bottom:6px}
.tier .sub{color:var(--sub);font-size:13.5px;margin-bottom:16px}
.tier ul{list-style:none;display:grid;gap:10px;margin-bottom:20px}
.tier li{display:flex;gap:8px;font-size:14.5px;color:var(--sub)}
.tier li::before{content:"✓";color:var(--green);font-weight:800}
.tier .price{font-size:14px;color:var(--sub);margin-bottom:14px}
.tier .price b{color:var(--ink);font-size:20px}

/* Login cards */
.login-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.lg-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;
  box-shadow:var(--shadow);text-align:center}
.lg-card .ic{width:56px;height:56px;border-radius:16px;margin:0 auto 14px;display:flex;align-items:center;
  justify-content:center;font-size:26px}
.lg-card h3{font-size:18px;margin-bottom:6px}
.lg-card p{color:var(--sub);font-size:13.5px;margin-bottom:16px;min-height:38px}
.qr{width:140px;height:140px;margin:6px auto 10px;border:1px dashed var(--line);border-radius:12px;
  display:flex;align-items:center;justify-content:center;color:var(--sub);font-size:13px;text-align:center;background:#fafbff}

/* CTA band */
.cta{background:linear-gradient(120deg,var(--blue),var(--purple));color:#fff;border-radius:20px;
  padding:46px;text-align:center;margin:0 0 64px}
.cta h2{font-size:28px;margin-bottom:12px}
.cta p{opacity:.9;margin-bottom:24px;font-size:16px}
.cta .btn{background:#fff;color:var(--blue)}
.cta .btn:hover{background:#eef2ff}

/* Footer */
.ft{background:#11161f;color:#aeb6c4;padding:48px 0 26px}
.ft .grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
.ft h4{color:#fff;font-size:15px;margin-bottom:14px}
.ft a{display:block;color:#aeb6c4;font-size:14px;margin-bottom:9px}
.ft a:hover{color:#fff}
.ft .logo{color:#fff;margin-bottom:12px}
.ft .desc{font-size:13.5px;line-height:1.7;max-width:280px}
.ft .bottom{border-top:1px solid #232b38;margin-top:30px;padding-top:18px;text-align:center;font-size:13px;color:#727c8c}

/* About */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.about-grid img,.ph{width:100%;border-radius:16px;background:linear-gradient(135deg,#e9f0ff,#f3e9ff);
  min-height:280px;display:flex;align-items:center;justify-content:center;color:var(--sub);font-size:14px}
.value{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:14px}
.value .v{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
.value .v h4{font-size:16px;margin-bottom:6px}
.value .v p{font-size:13.5px;color:var(--sub)}

/* Contact */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact .info .row{display:flex;gap:12px;margin-bottom:16px;align-items:flex-start}
.contact .info .row .ic{width:42px;height:42px;border-radius:11px;background:rgba(47,111,237,.1);
  color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:20px;flex:0 0 auto}
.contact .info .row b{display:block;font-size:15px}
.contact .info .row span{color:var(--sub);font-size:14px}
.contact .box{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px;box-shadow:var(--shadow)}

/* Misc */
.breadcrumb{font-size:13px;color:var(--sub);margin-bottom:8px}
.muted{color:var(--sub)}
.center{text-align:center}
.mt{margin-top:18px}
.notice{background:#fff8ec;border:1px solid #f3dca6;color:#8a5a08;border-radius:12px;padding:14px 18px;
  font-size:14px;margin-top:18px}

@media (max-width:900px){
  .hero .grid,.grid3,.grid4,.login-grid,.about-grid,.contact,.value{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .hero h1{font-size:32px}
  .nav{position:fixed;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;gap:0;padding:8px 0;display:none;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .nav a{padding:13px 20px;width:100%;border-bottom:1px solid var(--line)}
  .menu-btn{display:block}
  .hd-cta .btn.ghost{display:none}
  .lrow{grid-template-columns:110px 1fr 84px}
  .ft .grid{grid-template-columns:1fr 1fr}
}
@media (max-width:560px){
  .hero .stats{gap:16px}
  .sec-head h2{font-size:26px}
  .cta{padding:32px 22px}
  .ft .grid{grid-template-columns:1fr}
}