:root {
  --bg: #f5f6f8; --panel: #fff; --text: #1a1d21; --muted: #6b7280;
  --border: #e3e6ea; --accent: #2563eb; --accent-hover: #1d4ed8;
  --danger: #dc2626; --ok: #16a34a;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --panel: #181b21; --text: #e8eaed; --muted: #9aa2ad;
    --border: #2a2f37; --accent: #3b82f6; --accent-hover: #60a5fa;
    --shadow: 0 1px 3px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.35);
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; color: var(--text); background: var(--bg);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px; border-bottom: 1px solid var(--border); background: var(--panel);
}
.topbar h1 { font-size: 1.05rem; margin: 0; letter-spacing: -.01em; }
.topbar .who { color: var(--muted); font-size: .85rem; }
.wrap { max-width: 960px; margin: 0 auto; padding: 28px 16px 64px; }
.center { max-width: 400px; margin: 8vh auto; padding: 0 16px; }
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 22px; box-shadow: var(--shadow); margin-bottom: 22px;
}
h2 { font-size: 1.15rem; margin: 0 0 4px; }
.sub { color: var(--muted); font-size: .9rem; margin: 0 0 18px; }
label { display: block; font-weight: 600; font-size: .85rem; margin: 0 0 7px; }
input[type=url], input[type=text], input[type=email], input[type=number] {
  width: 100%; padding: 11px 12px; font-size: 15px; color: var(--text);
  background: var(--bg); border: 1px solid var(--border); border-radius: 9px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent); }
.field { margin-bottom: 16px; }
.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row > .field { flex: 1; min-width: 180px; }
button {
  padding: 11px 16px; font-size: .92rem; font-weight: 600; border-radius: 9px;
  border: 1px solid var(--border); background: var(--panel); color: var(--text); cursor: pointer;
  transition: background .15s, border-color .15s, transform .05s;
}
button:hover { border-color: var(--accent); }
button:active { transform: translateY(1px); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
button.link { border: none; background: none; color: var(--accent); padding: 4px 6px; }
button:disabled { opacity: .5; cursor: not-allowed; }
.msg { font-size: .85rem; margin-top: 10px; min-height: 1.2em; }
.msg.err { color: var(--danger); }
.msg.ok { color: var(--ok); }
.qrwrap { display: flex; gap: 22px; flex-wrap: wrap; align-items: flex-start; }
.qrbox { padding: 14px; background: #fff; border: 1px solid var(--border); border-radius: 12px; }
.qrbox svg { display: block; width: 200px; height: 200px; }
.trk { font-size: .85rem; word-break: break-all; }
.trk code { background: var(--bg); padding: 2px 6px; border-radius: 6px; border: 1px solid var(--border); }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .03em; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
.pill { display: inline-block; background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 1px 9px; font-size: .8rem; font-variant-numeric: tabular-nums; }
.muted { color: var(--muted); }
.scandetail { background: var(--bg); }
.scandetail td { font-size: .82rem; color: var(--muted); }
.empty { color: var(--muted); text-align: center; padding: 28px 0; }
.toolbtns { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.codeinput { letter-spacing: 6px; font-size: 20px; text-align: center; font-variant-numeric: tabular-nums; }