/* Aptdb Pay 官网 —— 深色 + 金棕品牌(#BF9417)。无 emoji,双语。 */
:root{
  --gold:#BF9417; --gold-2:#E0B400; --gold-deep:#9C7A12;
  --bg:#0e0d0a; --bg-2:#161410; --card:#1c1913; --line:#2a261d;
  --text:#f4efe4; --muted:#a89e8a; --muted-2:#7d7565;
  --radius:16px; --max:1120px;
  --grad:linear-gradient(135deg,#E0B400 0%,#BF9417 45%,#9C7A12 100%);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg); color:var(--text);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.6; -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.gold{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}

/* nav */
header.nav{position:sticky;top:0;z-index:50;background:rgba(14,13,10,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.2px}
.brand img{height:30px;width:auto;display:block}
.nav-right{display:flex;align-items:center;gap:14px}
.lang-btn{border:1px solid var(--line);background:transparent;color:var(--muted);padding:7px 12px;border-radius:999px;font-size:13px;cursor:pointer;font-weight:600}
.lang-btn:hover{color:var(--text);border-color:var(--gold-deep)}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:15px;padding:12px 22px;border-radius:999px;cursor:pointer;border:none}
.btn-gold{background:var(--grad);color:#1a1407}
.btn-gold:hover{filter:brightness(1.06)}
.btn-ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--gold-deep)}
.btn-sm{padding:9px 16px;font-size:14px}

/* hero */
.hero{padding:84px 0 64px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-30%;right:-10%;width:620px;height:620px;border-radius:50%;
  background:radial-gradient(circle,rgba(191,148,23,.18),transparent 62%);pointer-events:none}
.hero-in{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;position:relative}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--gold-2);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:18px}
h1{font-size:52px;line-height:1.1;font-weight:850;letter-spacing:-1px;margin-bottom:20px}
.hero p.lead{font-size:18px;color:var(--muted);max-width:520px;margin-bottom:32px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.hero-note{font-size:13px;color:var(--muted-2);margin-top:16px}
.hero-art{display:flex;justify-content:center}
.phone{width:280px;aspect-ratio:9/19;background:linear-gradient(160deg,#1d1a13,#100f0b);border:1px solid var(--line);
  border-radius:38px;padding:14px;box-shadow:0 40px 90px rgba(0,0,0,.55);position:relative}
.phone-screen{height:100%;border-radius:26px;background:radial-gradient(120% 80% at 50% 0%,rgba(191,148,23,.16),transparent 60%),#0b0a07;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:18px;padding:24px;text-align:center}
.phone-screen img{width:96px;height:96px}
.phone-screen .pname{font-weight:800;font-size:22px}
.phone-screen .psub{font-size:13px;color:var(--muted)}

/* sections */
section{padding:64px 0}
.sec-head{text-align:center;max-width:640px;margin:0 auto 44px}
.sec-head h2{font-size:34px;font-weight:800;letter-spacing:-.5px;margin-bottom:12px}
.sec-head p{color:var(--muted);font-size:16px}

/* features grid */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.feat{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.feat:hover{border-color:var(--gold-deep)}
.feat .ico{width:46px;height:46px;border-radius:12px;background:rgba(191,148,23,.12);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat .ico svg{width:24px;height:24px;stroke:var(--gold-2);fill:none;stroke-width:1.8}
.feat h3{font-size:17px;font-weight:750;margin-bottom:8px}
.feat p{color:var(--muted);font-size:14px}
.feat .soon{display:inline-block;margin-left:8px;font-size:11px;font-weight:700;color:var(--gold-2);border:1px solid var(--gold-deep);border-radius:999px;padding:1px 8px;vertical-align:middle}

/* security band */
.band{background:var(--bg-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-list{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;max-width:880px;margin:0 auto}
.sec-item{display:flex;gap:14px;padding:18px;background:var(--card);border:1px solid var(--line);border-radius:14px}
.sec-item .ico{flex:0 0 auto;width:40px;height:40px;border-radius:10px;background:rgba(191,148,23,.12);display:flex;align-items:center;justify-content:center}
.sec-item .ico svg{width:22px;height:22px;stroke:var(--gold-2);fill:none;stroke-width:1.8}
.sec-item h4{font-size:15px;font-weight:750;margin-bottom:4px}
.sec-item p{font-size:13px;color:var(--muted)}

/* download cta */
.dl{text-align:center}
.dl .card{max-width:560px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:44px 36px}
.dl img.appicon{width:88px;height:88px;border-radius:20px;margin-bottom:20px;box-shadow:0 14px 36px rgba(0,0,0,.45)}
.dl h2{font-size:28px;margin-bottom:10px}
.dl p{color:var(--muted);margin-bottom:26px}
.dl .meta{font-size:13px;color:var(--muted-2);margin-top:16px}
.store-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* footer */
footer{border-top:1px solid var(--line);padding:36px 0;color:var(--muted-2);font-size:13px}
.foot-in{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px}
.foot-brand{display:flex;align-items:center;gap:8px;color:var(--muted)}
.foot-brand img{height:22px}

@media(max-width:860px){
  .hero-in{grid-template-columns:1fr;gap:36px}
  h1{font-size:38px}
  .hero-art{order:-1}
  .grid{grid-template-columns:1fr}
  .sec-list{grid-template-columns:1fr}
  .nav .btn-gold{display:none}
}