:root{
  color-scheme:dark;
  --bg:#05080f;
  --panel:#0d1626;
  --panel-2:#0a1220;
  --line:#20304a;
  --line-soft:#182539;
  --text:#e9effc;
  --muted:#93a5c4;
  --muted-2:#6c7f9f;
  --blue:#2f6bed;
  --blue-2:#4f8bff;
  --green:#8ff0c0;
  --green-deep:#0f3a2c;
  --yellow:#ffd98a;
  --red:#ffa3a3;
  --radius:20px;
}
*{box-sizing:border-box}
html,body{min-height:100%}
body{
  margin:0;padding:clamp(24px,5vh,56px) 22px 48px;
  display:flex;align-items:flex-start;justify-content:center;
  /* safe center：现代浏览器垂直居中且内容超高时不裁切；不支持的浏览器保留顶部对齐 */
  align-items:safe center;
  background:
    radial-gradient(900px 460px at 6% -12%,#15335f 0%,transparent 62%),
    radial-gradient(760px 420px at 102% -6%,#16254a 0%,transparent 60%),
    radial-gradient(600px 500px at 50% 120%,#0d1c34 0%,transparent 65%),
    var(--bg);
  color:var(--text);
  font-family:"Segoe UI","Microsoft YaHei","PingFang SC",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background-image:linear-gradient(#1b2a4414 1px,transparent 1px),linear-gradient(90deg,#1b2a4414 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 0,#000 0%,transparent 72%);
}
.glow{position:fixed;left:50%;top:-260px;width:760px;height:520px;transform:translateX(-50%);
  background:radial-gradient(closest-side,#2f6bed2e,transparent);filter:blur(8px);pointer-events:none;z-index:0}

[hidden]{display:none!important}

.layout{position:relative;z-index:1;width:min(520px,100%);margin:auto 0;display:grid;gap:22px}
.layout.has-result{width:min(1060px,100%);grid-template-columns:minmax(0,1.02fr) minmax(0,1fr);align-items:start}

.panel{
  position:relative;padding:30px 30px 26px;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(168deg,#122036 0%,#0c1524 46%,#0a1220 100%);
  box-shadow:0 34px 90px -56px #000,inset 0 1px 0 #ffffff0d;
  animation:rise .34s cubic-bezier(.2,.7,.3,1) both;
}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}

.brand{display:flex;align-items:center;gap:13px;margin-bottom:30px}
.logo{
  width:48px;height:48px;flex:0 0 auto;border-radius:14px;display:grid;place-items:center;
  font-size:24px;font-weight:700;color:#fff;
  background:linear-gradient(140deg,#4a8bff,#1d4fd0 70%,#1a45bb);
  box-shadow:0 12px 28px -14px #2f6bed,inset 0 1px 0 #ffffff40;
}
.brand-text{min-width:0}
.brand h1{font-size:19px;line-height:1.3;margin:0;letter-spacing:.2px}
.subtitle{color:var(--muted);font-size:12px;line-height:1.6;margin:4px 0 0}

.badge{
  margin-left:auto;flex:0 0 auto;padding:7px 11px;border-radius:999px;
  border:1px solid #2c4a6b;color:var(--green);font-size:11px;letter-spacing:.3px;white-space:nowrap;
  background:#0b1a26;
}
.badge.sim{color:var(--yellow);border-color:#5c4a26;background:#1b1708}
.badge.bad{color:var(--red);border-color:#63383b;background:#1e0f12}

label{display:block;color:var(--muted);font-size:13.5px;margin-bottom:10px;letter-spacing:.2px}
.amount-box{
  display:flex;align-items:center;gap:10px;padding:16px 18px;
  background:#060e1a;border:1px solid #2d4463;border-radius:16px;
  transition:border-color .18s,box-shadow .18s;
}
.amount-box:focus-within{border-color:#5d8ee0;box-shadow:0 0 0 3px #2f6bed33}
.currency{font-size:26px;color:var(--muted-2);line-height:1;padding-bottom:3px}
.unit{font-size:12px;color:var(--muted-2);margin-left:auto;padding-bottom:6px}
input{width:100%;min-width:0;color:var(--text);background:transparent;border:0;outline:0;
  font-weight:800;font-size:38px;letter-spacing:-.6px;font-variant-numeric:tabular-nums;
  font-family:inherit;line-height:1.15}
input::placeholder{color:#3b4d68}
.range{font-size:11.5px;color:var(--muted-2);margin:9px 0 0}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.chip{
  min-height:40px;padding:0 14px;border-radius:11px;cursor:pointer;
  border:1px solid #2c4260;background:#0a1424;color:#cfdcf3;
  font-family:inherit;font-size:13.5px;font-weight:600;font-variant-numeric:tabular-nums;
  transition:transform .12s,border-color .16s,background .16s,color .16s;
}
.chip:hover{border-color:#5681c9;background:#132239;transform:translateY(-1px)}
.chip[aria-pressed="true"]{
  color:#fff;border-color:#79a6ff;
  background:linear-gradient(180deg,#3c7bf0,#2559d1);
  box-shadow:0 8px 20px -12px #2f6bed;
}

button{font-family:inherit;cursor:pointer}
button:focus-visible,a:focus-visible{outline:3px solid #8fbbff;outline-offset:3px}
/* 金额输入框的焦点反馈由 .amount-box:focus-within 统一提供，避免两层描边互相遮挡 */
input:focus,input:focus-visible{outline:0}
.primary{
  display:flex;align-items:center;justify-content:center;gap:10px;width:100%;
  min-height:58px;margin-top:24px;padding:15px;border-radius:14px;
  border:1px solid #6e9dff;color:#fff;font-size:16.5px;font-weight:700;letter-spacing:.4px;
  background:linear-gradient(180deg,#4b86ff,#2154cd);
  box-shadow:0 18px 40px -22px #2f6bed,inset 0 1px 0 #ffffff4d;
  transition:transform .14s,filter .14s,box-shadow .14s;
}
.primary:hover:not(:disabled){transform:translateY(-1px);filter:brightness(1.07)}
.primary:active:not(:disabled){transform:translateY(0);filter:brightness(.98)}
.primary:disabled{opacity:.55;cursor:progress;box-shadow:none}
.primary.compact{min-height:50px;font-size:15px;margin-top:14px}

.error{color:var(--red);font-size:12.5px;line-height:1.7;margin:12px 0 0}
.error:empty{display:none}

.notice{
  margin:22px 0 0;padding-top:16px;border-top:1px dashed #2a3b55;
  font-size:11.5px;line-height:1.85;color:var(--yellow);
}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0 0}
.facts>div{min-width:0}
.facts dt{font-size:10.5px;color:var(--muted-2);letter-spacing:.4px;margin-bottom:4px}
.facts dd{margin:0;font-size:12px;color:#c2d1e9;font-variant-numeric:tabular-nums;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 右侧：付款信息 ---------- */
.result-panel{padding-top:26px}
.result-head{display:flex;align-items:center;gap:10px}
.result-head h2{font-size:13px;font-weight:600;color:var(--muted);margin:0;letter-spacing:.6px}
.status{
  margin-left:auto;display:inline-flex;align-items:center;gap:7px;
  padding:6px 11px;border-radius:999px;font-size:11.5px;letter-spacing:.2px;
  border:1px solid #2c4a6b;color:var(--green);background:#0b1a26;white-space:nowrap;
}
.status i{width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 0 3px currentColor inset}
.status.waiting{color:var(--yellow);border-color:#5c4a26;background:#1b1708}
.status.waiting i{animation:pulse 1.6s ease-in-out infinite}
.status.done{color:var(--green);border-color:#2c6b52;background:#0c241c}
.status.bad{color:var(--red);border-color:#63383b;background:#1e0f12}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.7)}}

.amount-line{margin:18px 0 0;display:flex;align-items:baseline;gap:6px;line-height:1.1}
.amount-line small{font-size:22px;color:var(--muted-2);font-weight:600}
.amount-line strong{font-size:48px;font-weight:800;letter-spacing:-1.4px;font-variant-numeric:tabular-nums}
.amount-note{font-size:11.5px;color:var(--muted);line-height:1.7;margin:8px 0 0;min-height:1em}

.qr-card{
  margin:20px 0 14px;padding:18px;border-radius:18px;background:#fff;
  display:grid;place-items:center;min-height:220px;color:#2a4160;text-align:center;
  box-shadow:inset 0 0 0 1px #ffffff,0 16px 40px -30px #000;
}
.qr-card img{display:block;width:min(300px,100%);height:auto;border-radius:6px}
.qr-empty{font-size:13px;line-height:1.8;max-width:260px;margin:0}
.scan-note{font-size:12.5px;color:var(--muted);line-height:1.8;margin:0}

.timeline{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:0}
.timeline li{position:relative;display:flex;gap:12px;padding:0 0 16px 0;min-height:38px}
.timeline li:last-child{padding-bottom:0}
.timeline li::before{
  content:"";position:absolute;left:5px;top:14px;bottom:0;width:1px;background:var(--line);
}
.timeline li:last-child::before{display:none}
.timeline .dot{
  position:relative;z-index:1;width:11px;height:11px;flex:0 0 auto;margin-top:4px;
  border-radius:50%;background:#16233a;border:1px solid #34506f;
}
.timeline b{display:block;font-size:12.5px;font-weight:600;color:#b9c9e2;letter-spacing:.2px}
.timeline small{display:block;font-size:11px;color:var(--muted-2);margin-top:3px;line-height:1.6}
.timeline li.done .dot{background:var(--green);border-color:#4fbd91;box-shadow:0 0 0 3px #8ff0c01f}
.timeline li.done b{color:#dcf7ea}
.timeline li.active .dot{background:var(--yellow);border-color:#a8843c;box-shadow:0 0 0 4px #ffd98a1f}
.timeline li.active b{color:#ffeec2}
.timeline li.active::before{background:#3a4c6b}

.order-facts{margin:20px 0 0;padding-top:6px;border-top:1px dashed #2a3b55;font-size:12px}
.order-facts>div{display:flex;align-items:center;gap:14px;justify-content:space-between;padding:9px 0;
  border-bottom:1px solid #16202f}
.order-facts>div:last-child{border-bottom:0}
.order-facts dt{color:var(--muted-2);flex:0 0 auto;font-size:11.5px}
.order-facts dd{margin:0;text-align:right;overflow-wrap:anywhere;color:#d6e2f6;
  font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:8px;
  justify-content:flex-end;flex-wrap:wrap;min-width:0}
.order-facts code{font-family:ui-monospace,"Cascadia Code",Consolas,monospace;font-size:11.5px;
  letter-spacing:.2px;word-break:break-all;min-width:0}
.ghost{
  padding:2px 7px;border-radius:6px;font-size:10.5px;
  border:1px solid #2c4260;background:#0a1424;color:var(--muted);line-height:1.7;
}
.ghost:hover{border-color:#5681c9;color:#dce8fb}

.actions{display:flex;gap:10px;margin-top:20px}
.actions>*{flex:1 1 0;min-width:0}
.secondary{
  min-height:46px;padding:10px 14px;border-radius:12px;
  border:1px solid #2f4767;background:#0a1526;color:#d3e0f5;font-family:inherit;font-size:13.5px;
  display:flex;align-items:center;justify-content:center;text-decoration:none;
  transition:border-color .16s,background .16s,transform .12s;
}
.secondary:hover{border-color:#5c86cc;background:#132239;transform:translateY(-1px)}
.secondary:disabled{opacity:.5;cursor:not-allowed;transform:none}
.secondary.link{margin-top:12px;font-size:12.5px}
.poll-hint{font-size:11.5px;color:var(--muted-2);line-height:1.8;margin:16px 0 0}

/* ---------- 弹窗 / 提示 ---------- */
dialog{
  width:min(400px,calc(100% - 36px));padding:30px 28px 26px;
  border:1px solid #2f4767;border-radius:22px;background:linear-gradient(170deg,#132036,#0c1524);
  color:var(--text);text-align:center;box-shadow:0 50px 120px -50px #000;
}
dialog::backdrop{background:#02060ccc;backdrop-filter:blur(7px)}
dialog[open]{animation:pop .22s cubic-bezier(.2,.8,.3,1) both}
@keyframes pop{from{opacity:0;transform:scale(.96) translateY(6px)}to{opacity:1;transform:none}}
.success-icon{
  width:66px;height:66px;margin:0 auto 16px;border-radius:50%;display:grid;place-items:center;
  font-size:32px;color:var(--green);background:var(--green-deep);border:1px solid #2b6a52;
  box-shadow:0 0 0 8px #8ff0c00f;
}
dialog h2{font-size:23px;margin:0 0 8px;letter-spacing:.3px}
dialog p{font-size:13px;color:var(--muted);line-height:1.8;margin:0}
.success-ref{font-size:11px!important;color:var(--muted-2)!important;margin-top:10px!important;
  font-family:ui-monospace,Consolas,monospace;word-break:break-all}

.toast{
  position:fixed;left:50%;bottom:34px;transform:translateX(-50%) translateY(6px);
  z-index:9;margin:0;padding:10px 18px;border-radius:999px;
  background:#122036ee;border:1px solid #2f4767;color:#dbe7fa;font-size:12.5px;
  box-shadow:0 20px 40px -24px #000;animation:toastIn .18s ease both;
}
@keyframes toastIn{from{opacity:0;transform:translateX(-50%) translateY(12px)}to{opacity:1;transform:translateX(-50%) translateY(6px)}}

/* ---------- 独立页（模拟付款） ---------- */
.standalone{width:min(460px,100%);margin:auto}
.standalone h1{font-size:22px;margin:16px 0 6px}
.standalone .notice{margin:14px 0 0;border-top:0;padding-top:0;color:var(--muted);font-size:12.5px}
.standalone .notice b{color:var(--yellow);font-size:14px;font-variant-numeric:tabular-nums}
.standalone form{margin-top:22px}
.standalone .hint{font-size:12px;color:var(--muted);line-height:1.8;margin:16px 0 0}
.standalone .hint.ok{color:var(--green)}

@media (max-width:900px){
  body{padding:26px 14px 40px}
  .layout.has-result{grid-template-columns:minmax(0,1fr);width:min(520px,100%)}
  .panel{padding:24px 22px 22px}
  .brand{flex-wrap:wrap;gap:10px;margin-bottom:24px}
  .brand h1{font-size:18px}
  .badge{font-size:10.5px;margin-left:0}
  input{font-size:34px}
  .amount-line strong{font-size:42px}
  .actions{flex-wrap:wrap}
  .actions>*{flex:1 1 46%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}