:root{
  --red:#FE0002; --red-d:#c60002; --ink:#1c1c1e; --muted:#6b7280;
  --bg:#f3f4f6; --card:#fff; --line:#e5e7eb; --ok:#16a34a; --in:#16a34a; --out:#dc2626;
  --radius:16px; --shadow:0 6px 24px rgba(0,0,0,.08);
}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--ink);
  -webkit-text-size-adjust:100%}
.hidden{display:none !important}

.demo-ribbon{background:#111;color:#fff;font-size:12px;text-align:center;padding:6px 12px;line-height:1.3}
.demo-ribbon b{color:#ffd0d0}

.view{max-width:460px;margin:0 auto;padding:16px}

/* ---- auth ---- */
.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}
.auth{margin-top:18px}
.brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.logo{width:48px;height:48px;border-radius:12px;background:var(--red);color:#fff;font-weight:800;font-size:24px;
  display:grid;place-items:center;box-shadow:0 4px 12px rgba(254,0,2,.35)}
.brand h1{margin:0;font-size:20px}
.brand .sub{margin:2px 0 0;font-size:12px;color:var(--muted)}

.tabs{display:flex;background:var(--bg);border-radius:12px;padding:4px;margin-bottom:16px}
.tab{flex:1;border:0;background:none;padding:10px;border-radius:9px;font-weight:600;color:var(--muted);cursor:pointer;font-size:14px}
.tab.on{background:#fff;color:var(--red);box-shadow:0 1px 4px rgba(0,0,0,.08)}

.pane{display:none;flex-direction:column;gap:12px}
.pane.on{display:flex}
label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:#374151}
input{border:1px solid var(--line);border-radius:11px;padding:12px 14px;font-size:16px;font-weight:500;outline:none;width:100%}
input:focus{border-color:var(--red);box-shadow:0 0 0 3px rgba(254,0,2,.12)}

.btn{border:0;border-radius:12px;padding:13px;font-size:15px;font-weight:700;cursor:pointer}
.btn.primary{background:var(--red);color:#fff}
.btn.primary:active{background:var(--red-d)}
.btn.primary:disabled{opacity:.6}
.btn.ghost{background:var(--bg);color:var(--ink);padding:12px 16px}

.demo-hint{font-size:12px;color:var(--muted);background:#fff6f6;border:1px dashed #f3b1b2;border-radius:10px;padding:8px 10px}
.demo-hint b{color:var(--red)}
.msg{font-size:13px;margin:6px 0 0;min-height:16px;color:var(--out)}
.msg.ok{color:var(--ok)}
.foot{text-align:center;color:var(--muted);font-size:12px;margin:16px 0}

/* ---- home ---- */
.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.hello{font-size:13px;color:var(--muted)}
.cname{font-size:19px;font-weight:800}
.icon-btn{border:0;background:#fff;height:40px;padding:0 16px;border-radius:11px;box-shadow:var(--shadow);font-size:14px;font-weight:700;color:var(--red);cursor:pointer}

.balance-card{background:linear-gradient(135deg,var(--red),#ff4d4f);color:#fff;border-radius:18px;padding:20px;
  box-shadow:0 10px 26px rgba(254,0,2,.3)}
.bc-label{font-size:13px;opacity:.9}
.bc-amount{font-size:30px;font-weight:800;margin:6px 0 10px;letter-spacing:.3px}
.bc-acc{font-size:13px;opacity:.95;display:flex;align-items:center;gap:8px}
.bc-acc span{font-variant-numeric:tabular-nums;letter-spacing:1px}
.copy{border:0;background:rgba(255,255,255,.25);color:#fff;padding:3px 9px;border-radius:7px;cursor:pointer;font-size:12px;font-weight:700}

.menu{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}
.m{background:#fff;border:0;border-radius:14px;padding:16px 6px;box-shadow:var(--shadow);font-weight:700;font-size:13px;
  cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:7px;color:var(--ink)}
.m span{font-size:22px;color:var(--red);line-height:1}

.panel{margin-top:4px}
.panel h3{margin:0 0 14px;font-size:16px}
.panel form{display:flex;flex-direction:column;gap:12px}
.inq{display:flex;gap:8px}
.inq input{flex:1}
.dest{background:#f0fdf4;border:1px solid #bbf7d0;color:#166534;border-radius:10px;padding:10px 12px;font-size:14px;font-weight:700}

.hist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.hist li{display:flex;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.hist li:last-child{border-bottom:0}
.hi-ic{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;font-weight:800;flex:none}
.hi-ic.in{background:#dcfce7;color:var(--in)}
.hi-ic.out{background:#fee2e2;color:var(--out)}
.hi-ic.open{background:#e0e7ff;color:#4f46e5}
.hi-main{flex:1;min-width:0}
.hi-t{font-weight:600;font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hi-s{font-size:12px;color:var(--muted)}
.hi-amt{font-weight:800;font-size:14px;font-variant-numeric:tabular-nums;white-space:nowrap}
.hi-amt.in{color:var(--in)}
.hi-amt.out{color:var(--out)}

/* ---- receipt ---- */
.modal{position:fixed;inset:0;background:rgba(0,0,0,.45);display:grid;place-items:center;padding:20px;z-index:20}
.rc{background:#fff;border-radius:18px;padding:24px;max-width:360px;width:100%;text-align:center;box-shadow:var(--shadow)}
.rc-check{width:62px;height:62px;border-radius:50%;background:var(--ok);color:#fff;font-size:34px;display:grid;place-items:center;margin:0 auto 12px}
.rc h3{margin:0 0 4px}
.rc-amount{font-size:26px;font-weight:800;margin:6px 0 16px}
.rc-row{display:flex;justify-content:space-between;padding:9px 0;border-bottom:1px dashed var(--line);font-size:14px}
.rc-row span{color:var(--muted)}
.rc .btn{width:100%;margin-top:18px}