:root{
  --bg:#fff; --tile:#f5f5f7; --ink:#1d1d1f; --ink-2:#494a4e; --ink-3:#86868b;
  --line:#e6e6ea; --acc:#2f6bff; --acc-2:#18b7c4;
  --r:22px; --rs:14px;
  --sh:0 1px 2px rgba(0,0,0,.04),0 10px 30px rgba(0,0,0,.06);
  --sh-s:0 1px 2px rgba(0,0,0,.05),0 4px 14px rgba(0,0,0,.05);
  --sans:-apple-system,BlinkMacSystemFont,"SF Pro SC","PingFang SC","Helvetica Neue","Microsoft YaHei",sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{font-family:var(--sans);background:var(--bg);color:var(--ink);line-height:1.65;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:1120px;margin:0 auto;padding:0 26px}
.sp{flex:1}

/* brand mark */
.mark{position:relative;display:inline-block;vertical-align:middle;flex:0 0 auto;border-radius:30%;background:linear-gradient(135deg,var(--acc),var(--acc-2));box-shadow:inset 0 1px 0 rgba(255,255,255,.35)}
.mark:after{content:"";position:absolute;left:50%;top:50%;width:42%;height:42%;transform:translate(-50%,-50%);border:calc(var(--mw,26px)*.092) solid #fff;border-radius:50%;box-sizing:border-box}
.mark:before{content:"";position:absolute;left:50%;top:50%;width:14%;height:14%;transform:translate(-50%,-50%);background:#fff;border-radius:50%;z-index:2}
.mark.s{--mw:26px;width:26px;height:26px}

/* nav */
.nav{position:sticky;top:0;z-index:40;background:rgba(255,255,255,.82);backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--line)}
.nav-in{max-width:1120px;margin:0 auto;padding:0 26px;height:58px;display:flex;align-items:center;gap:22px}
.brand{display:flex;align-items:center;gap:10px;font-weight:650;font-size:16.5px;letter-spacing:.2px}
.brand small{font-weight:450;font-size:12.5px;color:var(--ink-3);padding-left:10px;border-left:1px solid var(--line);line-height:1.1}
.links{display:flex;gap:26px;font-size:14px;color:var(--ink-2)}
.links a:hover{color:var(--ink)}
.nav-acts{display:flex;gap:10px;align-items:center}
.pill{display:inline-flex;align-items:center;justify-content:center;border-radius:999px;font-size:14px;font-weight:550;padding:8px 18px;transition:.18s}
.pill.pri{background:var(--acc);color:#fff}
.pill.pri:hover{background:#1f57e0}
.pill.line{border:1px solid var(--line);color:var(--ink-2);background:#fff}
.pill.line:hover{border-color:#c9c9cf;color:var(--ink)}
.pill.lg{padding:13px 28px;font-size:15.5px}

/* hero */
.hero{padding:96px 0 74px;background:
  radial-gradient(900px 420px at 78% -10%,rgba(47,107,255,.10),rgba(255,255,255,0) 70%),
  radial-gradient(700px 380px at 8% 0%,rgba(24,183,196,.08),rgba(255,255,255,0) 70%)}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:60px;align-items:center}
.manifest{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--sh);overflow:hidden}
.mh{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;border-bottom:1px solid var(--line);font-size:13px;font-weight:650;color:var(--ink-2)}
.mh span{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;color:var(--ink-3)}
.mi{display:flex;align-items:center;gap:12px;padding:17px 22px;border-bottom:1px solid var(--line);transition:background .15s}
.mi:last-of-type{border-bottom:0}
.mi:hover{background:var(--tile)}
.mi b{flex:1;font-size:15px;font-weight:620}
.mi i{font-style:normal;color:var(--ink-3);font-size:15px;transition:transform .15s,color .15s}
.mi:hover i{transform:translateX(3px);color:var(--acc)}
.mf{padding:13px 22px;background:var(--tile);font-size:12.5px;color:var(--ink-3);border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--acc);background:#fff;border:1px solid var(--line);border-radius:999px;padding:7px 15px;box-shadow:var(--sh-s)}
.tag:before{content:"";width:7px;height:7px;border-radius:50%;background:linear-gradient(135deg,var(--acc),var(--acc-2))}
h1{margin:26px 0 0;font-size:clamp(38px,6.2vw,66px);line-height:1.14;font-weight:750;letter-spacing:-1.6px}
.sub{margin:22px 0 0;max-width:660px;font-size:17.5px;color:var(--ink-2)}
.acts{margin-top:34px;display:flex;gap:14px;flex-wrap:wrap}

/* sections */
.sec{padding:84px 0}
.sec.tile{background:var(--tile)}
.head h2{font-size:clamp(26px,3.6vw,40px);font-weight:720;letter-spacing:-.8px}
.head p{margin-top:12px;color:var(--ink-2);font-size:16px;max-width:640px}

/* product cards */
.cards{margin-top:44px;display:grid;grid-template-columns:1fr 1fr;gap:22px}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:30px 30px 26px;box-shadow:var(--sh-s);transition:transform .22s,box-shadow .22s}
.card:hover{transform:translateY(-4px);box-shadow:var(--sh)}
.ct{display:flex;align-items:center;gap:12px}
.ct b{font-size:15.5px;font-weight:650}
.chip{font-size:12px;font-weight:600;border-radius:999px;padding:3px 11px}
.chip.on{background:rgba(52,199,89,.12);color:#1d8a3c}
.chip.sale{background:rgba(47,107,255,.10);color:var(--acc)}
.chip.custom{background:rgba(255,149,0,.13);color:#b25b00}
.card h3{margin:16px 0 0;font-size:22px;font-weight:700;letter-spacing:-.4px}
.card p{margin:10px 0 0;font-size:14.8px;color:var(--ink-2)}
.card ul{margin:18px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.card li{font-size:12.5px;color:var(--ink-2);background:var(--tile);border-radius:999px;padding:4px 12px}
.go{margin-top:20px;font-size:14px;font-weight:600;color:var(--acc)}

/* facts */
.facts{margin-top:40px;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.f{background:#fff;border:1px solid var(--line);border-radius:var(--rs);padding:24px 22px}
.f b{font-size:16.5px;font-weight:680}
.f p{margin-top:9px;font-size:13.8px;color:var(--ink-2)}

/* talk */
.talk{padding:88px 0;background:linear-gradient(160deg,#101114,#1b1d22);color:#f5f5f7;text-align:center}
.talk h2{font-size:clamp(24px,3.4vw,36px);font-weight:720;letter-spacing:-.6px}
.talk p{margin:14px auto 0;max-width:560px;color:#a9abb3;font-size:15.5px}
.wx{margin:30px auto 0;display:inline-flex;align-items:center;gap:12px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:12px 18px}
.wl{font-size:12.5px;color:#8f929b}
.wid{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:16px;letter-spacing:.6px}
.copy{border:1px solid rgba(255,255,255,.2);background:transparent;color:#f5f5f7;border-radius:9px;padding:5px 14px;font-size:13px;cursor:pointer;font-family:inherit}
.copy.ok{border-color:#34c759;color:#34c759}
.fine{margin-top:16px;font-size:12.5px;color:#7c7f88}

/* footer */
.foot{border-top:1px solid var(--line);padding:30px 0;background:#fff}
.foot-in{display:flex;align-items:center;gap:26px;flex-wrap:wrap;font-size:13px;color:var(--ink-3)}
.fl{display:flex;gap:20px}
.fl a:hover{color:var(--ink)}

@media (max-width:860px){
  .links{display:none}
  .cards{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr 1fr}
  .hero{padding:64px 0 52px}
  .hero-grid{grid-template-columns:1fr;gap:38px}
  .sec{padding:60px 0}
}
@media (max-width:520px){
  .facts{grid-template-columns:1fr}
  .brand small{display:none}
  .nav-acts .pill.line{display:none}
}