:root{
  --bg:#0a0a0c;
  --bg-elev:#121214;
  --card:#17171a;
  --card-2:#1c1c20;
  --ink:#f3f3f5;
  --ink-2:#c9c9ce;
  --muted:#8d8d95;
  --line:rgba(255,255,255,.09);
  --line-strong:rgba(255,255,255,.16);
  --gold:#e3b454;
  --gold-strong:#f3cf7a;
  --gold-soft:rgba(227,180,84,.12);
  --radius:16px;
  --max:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Noto Sans SC","Microsoft YaHei",sans-serif;
  color:var(--ink);
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(227,180,84,.09), transparent 55%),
    radial-gradient(700px 420px at 95% 0%, rgba(227,180,84,.06), transparent 50%),
    var(--bg);
  line-height:1.7;
  min-height:100vh;
}
a{color:var(--gold);text-decoration:none}
a:hover{text-decoration:underline;text-underline-offset:3px}
.wrap{width:min(var(--max),calc(100% - 2.5rem));margin:0 auto}

/* nav */
.nav{
  position:sticky;top:0;z-index:20;
  background:rgba(10,10,12,.85);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:1rem;padding:1rem 0;
}
.brand{
  font-family:"Songti SC","Noto Serif CJK SC","Source Han Serif SC",serif;
  font-weight:700;font-size:1.15rem;letter-spacing:.08em;
  color:var(--ink);text-decoration:none;
}
.nav-links{display:flex;gap:1.3rem;flex-wrap:wrap;font-size:.92rem;align-items:center}
.nav-links a{color:var(--muted)}
.nav-links a:hover{color:var(--ink);text-decoration:none}
.nav-cta{
  background:linear-gradient(135deg,var(--gold-strong),var(--gold));
  color:#1a1300!important;font-weight:700;border-radius:999px;
  padding:.45rem 1.1rem;font-size:.88rem;white-space:nowrap;
}
.nav-cta:hover{text-decoration:none;filter:brightness(1.05)}

main .wrap{padding:3rem 0 4rem}

/* hero */
.hero{
  background:linear-gradient(180deg,rgba(255,255,255,.02),transparent 40%), var(--card);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:2.1rem 2.2rem;box-shadow:0 20px 50px rgba(0,0,0,.35);
  margin-bottom:1.6rem;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:.5rem;
  color:var(--gold);font-size:.82rem;font-weight:600;
  letter-spacing:.1em;text-transform:uppercase;margin-bottom:1.1rem;
}
.eyebrow::before{content:"";width:1.4rem;height:1px;background:var(--gold);opacity:.8}
h1{
  font-family:"Songti SC","Noto Serif CJK SC","Source Han Serif SC",serif;
  font-size:clamp(2rem,5.2vw,2.7rem);
  font-weight:700;line-height:1.2;margin:0 0 .85rem;letter-spacing:.02em;
}
.tagline{font-size:1.05rem;color:var(--ink-2);max-width:36em;margin:0 0 1.6rem}
.cta-row{display:flex;gap:.8rem;flex-wrap:wrap;margin-bottom:1.5rem}
.btn{
  display:inline-flex;align-items:center;gap:.4rem;
  border-radius:12px;padding:.75rem 1.4rem;font-weight:700;font-size:.95rem;
  white-space:nowrap;
}
.btn-gold{background:linear-gradient(135deg,var(--gold-strong),var(--gold));color:#1a1300}
.btn-gold:hover{text-decoration:none;filter:brightness(1.05)}
.btn-ghost{border:1px solid var(--line-strong);color:var(--ink)}
.btn-ghost:hover{text-decoration:none;border-color:var(--gold)}
.trust-row{display:flex;flex-wrap:wrap;gap:.6rem}
.trust-chip{
  display:inline-flex;align-items:center;gap:.45rem;
  font-size:.82rem;color:var(--ink-2);background:var(--bg-elev);
  border:1px solid var(--line);border-radius:999px;padding:.35rem .85rem;
}
.trust-chip i{width:7px;height:7px;border-radius:50%;background:var(--gold);display:inline-block}

/* sections */
section.block{
  background:linear-gradient(180deg,rgba(255,255,255,.015),transparent 40%), var(--card);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:1.8rem 2rem;box-shadow:0 12px 40px rgba(0,0,0,.25);
  margin-bottom:1.6rem;
}
section.block h2{
  font-family:"Songti SC","Noto Serif CJK SC","Source Han Serif SC",serif;
  font-size:1.35rem;font-weight:700;margin:0 0 .4rem;letter-spacing:.04em;
}
.sec-sub{color:var(--muted);font-size:.9rem;margin:0 0 1.3rem}
.lead{color:var(--ink-2);font-size:1rem}

/* trust strip */
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.trust-card{
  background:var(--bg-elev);border:1px solid var(--line);border-radius:12px;
  padding:1.1rem 1.2rem;
}
.trust-card b{display:block;font-size:.98rem;color:var(--ink);margin-bottom:.3rem}
.trust-card span{font-size:.85rem;color:var(--muted)}

/* product grid */
.p-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.p-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--bg-elev);border:1px solid var(--line);border-radius:14px;
  padding:1.2rem 1.3rem 1.3rem;transition:transform .15s,border-color .15s;
}
.p-card:hover{transform:translateY(-2px);border-color:rgba(227,180,84,.5)}
.p-card .n{font-size:1rem;font-weight:700;color:var(--ink);padding-right:70px;line-height:1.4}
.p-badge{
  position:absolute;right:14px;top:16px;font-size:.72rem;color:var(--gold-strong);
  background:var(--gold-soft);border:1px solid rgba(227,180,84,.3);
  border-radius:7px;padding:.1rem .5rem;font-weight:600;white-space:nowrap;
}
.p-price{margin-top:.9rem;font-size:1.5rem;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.p-price small{font-size:.78rem;color:var(--muted);font-weight:500}
.p-price s{font-size:.78rem;color:var(--muted);font-weight:500;margin-left:.4rem}
.p-note{font-size:.76rem;color:var(--muted);margin-top:.25rem}
.p-cta{
  margin-top:1rem;text-align:center;border:1px solid var(--line-strong);
  border-radius:10px;padding:.6rem 0;font-size:.88rem;font-weight:700;color:var(--ink);
}
.p-cta:hover{background:var(--gold-soft);border-color:var(--gold);text-decoration:none;color:var(--gold-strong)}

/* links / footer */
.links{display:grid;gap:.65rem}
.link-row{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:.85rem 1rem;border-radius:12px;
  background:var(--bg-elev);border:1px solid var(--line);
  color:var(--ink);text-decoration:none;transition:border-color .15s, transform .15s;
}
.link-row:hover{border-color:rgba(227,180,84,.45);transform:translateY(-1px);text-decoration:none}
.link-row small{color:var(--muted)}
.foot{
  margin-top:1rem;color:var(--muted);font-size:.85rem;
  display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  border-top:1px solid var(--line);padding-top:1.4rem;
}
.foot .disclaimer{width:100%;font-size:.8rem;color:var(--muted);margin-bottom:.6rem}

@media (max-width:900px){
  .p-grid{grid-template-columns:repeat(2,1fr)}
  .trust-grid{grid-template-columns:1fr}
}
@media (max-width:560px){
  .hero{padding:1.6rem}
  .p-grid{grid-template-columns:1fr}
  section.block{padding:1.4rem}
}