:root{
  --bg:#0a0e14;
  --card:#131a24;
  --card-br:#223044;
  --btn:#1b2431;
  --btn-br:#2e3a4a;
  --text:#e6edf5;
  --muted:#9aa4b2;
  --teal:#2ee6c8;
  --ali:#1677ff;
  --wx:#07c160;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:radial-gradient(120% 80% at 50% 0%,#101a28 0%,#0a0e14 55%,#080b11 100%);
  background-attachment:fixed;
  color:var(--text);
  font:15px/1.5 system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  min-height:100vh;
}
.wrap{max-width:560px;margin:0 auto;padding:20px 16px 44px}

.card{
  background:var(--card);
  border:1px solid var(--card-br);
  border-radius:14px;
  padding:20px;
  margin-bottom:16px;
}
.card-title{color:#b7c0cc;font-size:14px;margin:0 0 14px}
.card-title.gap{margin-top:24px}

/* ---------- 金额九宫格 ---------- */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.amt{
  height:56px;border-radius:10px;background:var(--btn);
  border:1px solid var(--btn-br);color:var(--text);
  font-size:16px;font-weight:600;cursor:pointer;
  transition:border-color .15s,background .15s,color .15s;
}
.amt:hover{border-color:#3b4b60}
.amt.on{background:rgba(46,230,200,.10);border-color:var(--teal);color:var(--teal)}

/* ---------- 自定义金额 ---------- */
.input-wrap{
  display:flex;align-items:center;gap:10px;height:56px;
  background:var(--btn);border:1px solid var(--btn-br);border-radius:10px;
  padding:0 16px;transition:border-color .15s;
}
.input-wrap:focus-within{border-color:#3f7fa8}
.prefix{color:var(--muted);font-size:17px}
.input-wrap input{
  flex:1;min-width:0;background:transparent;border:0;outline:0;
  color:var(--text);font-size:18px;font-family:inherit;letter-spacing:.4px;
}
.input-wrap input::placeholder{color:var(--muted)}

/* ---------- 支付方式 ---------- */
.chans{display:flex;gap:12px}
.chan{
  flex:1;display:flex;align-items:center;justify-content:center;gap:10px;
  height:58px;border-radius:10px;background:var(--btn);
  border:1px solid var(--btn-br);color:var(--text);
  font-size:16px;font-weight:600;font-family:inherit;cursor:pointer;
  transition:border-color .15s,background .15s,box-shadow .15s;
}
.chan:hover{border-color:#3b4b60}
.chan.on[data-ch="alipay"]{
  background:#0d2a4d;border-color:#1e90ff;
  box-shadow:0 0 0 1px rgba(30,144,255,.35),0 6px 18px -8px rgba(30,144,255,.8);
}
.chan.on[data-ch="wechat"]{
  background:rgba(7,193,96,.14);border-color:#22c55e;
  box-shadow:0 0 0 1px rgba(34,197,94,.35),0 6px 18px -8px rgba(34,197,94,.8);
}
.ico{flex:0 0 auto;display:block}

/* ---------- 金额汇总 ---------- */
.summary .row{
  display:flex;justify-content:space-between;align-items:center;
  color:var(--muted);font-size:14px;padding:9px 0;
}
.summary .row b{color:var(--text);font-weight:600;font-variant-numeric:tabular-nums}
.summary .row+.row.total{border-top:1px solid #223044;margin-top:6px;padding-top:14px}
.summary .row.total{color:#b7c0cc;font-size:15px}
.summary .row.total b{color:var(--teal);font-size:22px;font-weight:700}

/* ---------- 确认支付 ---------- */
.submit{
  width:100%;height:56px;border:0;border-radius:10px;
  background:#0e5f80;color:#7fb6d0;
  font-size:17px;font-weight:600;font-family:inherit;
  cursor:pointer;transition:background .18s,color .18s,transform .08s;
  font-variant-numeric:tabular-nums;
}
.submit:not(:disabled):active{transform:scale(.995)}
.submit:disabled{cursor:not-allowed}
.submit.ready[data-ch="alipay"]{background:#00b4e6;color:#fff}
.submit.ready[data-ch="wechat"]{background:#22c55e;color:#fff}
.submit.busy{opacity:.7;pointer-events:none}
.tip{margin-top:12px;text-align:center;color:#e2574c;font-size:13px;min-height:18px}

/* ---------- 扫码支付 ---------- */
.qr-card{padding:20px 20px 24px;text-align:center}
.qr-title{font-size:19px;font-weight:700;letter-spacing:.5px;margin:2px 0 10px}
.qr-amt{font-size:30px;font-weight:800;color:var(--teal);margin:0 0 16px;
  font-variant-numeric:tabular-nums}
.qr-oid{color:#9aa4b8;font-size:12px;margin:12px 0 14px;word-break:break-all;
  font-variant-numeric:tabular-nums}
.qr-frame{
  position:relative;width:264px;height:264px;margin:0 auto;
  border:2px solid #1e90ff;border-radius:10px;background:#fff;
  padding:10px;display:flex;align-items:center;justify-content:center;
}
.qr-frame[data-ch="wechat"]{border-color:#3aa76d}
.qr-frame img{width:240px;height:240px;display:block;image-rendering:pixelated}
.qr-logo{
  position:absolute;left:50%;top:50%;width:52px;height:52px;
  transform:translate(-50%,-50%);border-radius:50%;
  background:#1677ff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 4px #fff;font-size:24px;color:#fff;font-weight:700;
}
.qr-frame[data-ch="wechat"] .qr-logo{background:#07c160}
.qr-hint{color:var(--muted);font-size:14px;margin:18px 0 16px}
.ghost{
  height:42px;padding:0 20px;border-radius:8px;
  background:#1a2433;border:1px solid #33425a;color:var(--text);
  font-size:14px;font-family:inherit;cursor:pointer;
}
.ghost:hover{border-color:#4a5c78}

.cd-card{text-align:center;padding:20px}
.cd-label{color:var(--muted);font-size:14px}
.cd-time{
  font-size:34px;font-weight:700;letter-spacing:2px;margin:4px 0 2px;
  font-variant-numeric:tabular-nums;
}
.cd-state{color:var(--muted);font-size:13px}
.cd-state.paid{color:var(--teal)}

.cancel{
  width:100%;height:50px;border-radius:10px;
  background:#16202c;border:1px solid #24303f;color:var(--text);
  font-size:15px;font-family:inherit;cursor:pointer;
}
.cancel:hover{border-color:#3a4c63}

/* ---------- 支付成功 ---------- */
.done-card{text-align:center;padding:36px 20px}
.done-ico{
  width:64px;height:64px;margin:0 auto 16px;border-radius:50%;
  background:rgba(46,230,200,.14);border:2px solid var(--teal);
  color:var(--teal);font-size:32px;line-height:60px;font-weight:700;
}
.done-title{font-size:19px;font-weight:700}
.done-amt{font-size:30px;font-weight:700;color:var(--teal);margin:10px 0 6px;
  font-variant-numeric:tabular-nums}
.done-sub{color:var(--muted);font-size:13px;word-break:break-all}
.done-btn{background:#00b4e6;color:#fff}

@media (max-width:400px){
  .wrap{padding:14px 12px 36px}
  .card{padding:16px;border-radius:12px}
  .amt{height:50px;font-size:15px}
  .qr-frame{width:236px;height:236px}
  .qr-frame img{width:212px;height:212px}
  .cd-time{font-size:34px}
}