:root{
  --gold:#c9a24b;
  --gold-soft:#e7d3a0;
  --ink:#1f2733;
  --ink-soft:#5b6573;
  --bg:#f4f1ea;
  --card:#ffffff;
  --line:#ece6d8;
  --red:#c0392b;
  --green:#1f8a4c;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;background:linear-gradient(135deg,#2b3banner 0%,#1f2733 100%);
  background:#1f2733;color:#fff;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.brand{font-weight:700;font-size:17px;letter-spacing:1px;color:var(--gold-soft)}
.tabs{display:flex;gap:6px}
.tabs a{color:#cfd5df;text-decoration:none;font-size:14px;padding:6px 12px;border-radius:20px}
.tabs a.active{background:var(--gold);color:#1f2733;font-weight:700}
#view{max-width:640px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:14px;
  box-shadow:0 2px 8px rgba(0,0,0,.04)}
h2{font-size:18px;margin:0 0 12px;color:var(--ink)}
h3{font-size:15px;margin:14px 0 8px;color:var(--ink-soft)}
.field{margin-bottom:12px}
.field label{display:block;font-size:13px;color:var(--ink-soft);margin-bottom:6px}
.field input,.field select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;
  font-size:15px;background:#fbfaf6;color:var(--ink)}
.field input:focus,.field select:focus{outline:none;border-color:var(--gold)}
.btn{display:block;width:100%;padding:13px;border:none;border-radius:12px;background:var(--gold);
  color:#1f2733;font-size:16px;font-weight:700;cursor:pointer;margin-top:6px}
.btn:active{opacity:.85}
.btn.ghost{background:transparent;border:1px solid var(--gold);color:var(--gold)}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.receipt-img{width:100%;border-radius:10px;border:1px solid var(--line);display:block;background:#faf8f2}
.sign-wrap{position:relative;background:#fbfaf6;border:1px dashed var(--gold);border-radius:10px;overflow:hidden}
#signCanvas{width:100%;height:180px;display:block;touch-action:none}
.sign-bar{display:flex;justify-content:space-between;margin-top:8px}
.notice{background:#fff8ec;border:1px solid var(--gold-soft);color:#8a6d2b;
  font-size:12.5px;line-height:1.6;padding:10px 12px;border-radius:10px;margin-top:10px}
.amount{font-size:26px;font-weight:800;color:var(--red)}
.muted{color:var(--ink-soft);font-size:13px}
.row{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:none}
.row .v{font-weight:700}
.qr{display:flex;justify-content:center;padding:12px;background:#fff}
.tag{display:inline-block;font-size:12px;padding:2px 8px;border-radius:6px;background:#eef2f7;color:var(--ink-soft)}
.tag.active{background:#e6f6ec;color:var(--green)}
.tag.off{background:#fbeaea;color:var(--red)}
.pay-mask{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:50}
.pay-box{background:#fff;border-radius:16px;padding:22px;width:80%;max-width:320px;text-align:center}
.toast{position:fixed;left:50%;bottom:40px;transform:translateX(-50%);background:rgba(31,39,51,.92);
  color:#fff;padding:10px 18px;border-radius:24px;font-size:14px;opacity:0;transition:.25s;pointer-events:none;z-index:99}
.toast.show{opacity:1}
.center-tip{text-align:center;color:var(--ink-soft);padding:40px 0}
a.link{color:var(--gold);text-decoration:none;word-break:break-all}