:root {
  --bg: #071018;
  --bg-elev: #0e1a24;
  --bg-card: #12202c;
  --line: rgba(201, 162, 39, 0.22);
  --gold: #c9a227;
  --gold-2: #e8d48b;
  --ink: #e8eef4;
  --muted: #8ea0b5;
  --danger: #e25c5c;
  --ok: #3ecf8e;
  --warn: #e0b25a;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --mono: "Cascadia Mono", "Sarasa Mono SC", "Consolas", ui-monospace, monospace;
  --sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--ink); font-family: var(--sans); }
body {
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(201, 162, 39, 0.14), transparent 55%),
    radial-gradient(900px 400px at 100% 0%, rgba(50, 110, 150, 0.18), transparent 50%),
    var(--bg);
}
a { color: var(--gold-2); text-decoration: none; }
button, input, select, textarea { font-family: inherit; }
.mono { font-family: var(--mono); }

.shell { max-width: 920px; margin: 0 auto; padding: 20px 18px 64px; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 28px; gap: 12px;
}
.brand { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.brand svg { width: 32px; height: 32px; }
.brand h1 { font-size: 18px; margin: 0; letter-spacing: 0.08em; font-weight: 700; }
.brand span { display: block; color: var(--muted); font-size: 12px; letter-spacing: 0.12em; }
.nav { display: flex; gap: 8px; flex-wrap: wrap; }
.nav a, .nav button.linkish {
  background: transparent; border: 1px solid transparent; color: var(--muted);
  padding: 8px 10px; border-radius: 999px; cursor: pointer; font-size: 13px;
}
.nav a.active, .nav a:hover, .nav button.linkish:hover { color: var(--gold-2); border-color: var(--line); }

.hero { padding: 28px 0 10px; }
.hero h2 { font-size: 34px; line-height: 1.2; margin: 0 0 12px; font-weight: 720; }
.hero p { color: var(--muted); margin: 0 0 22px; max-width: 640px; line-height: 1.7; }
.row { display: flex; gap: 10px; flex-wrap: wrap; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), transparent 40%), var(--bg-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card h3 { margin: 0 0 8px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); line-height: 1.65; font-size: 14px; }

.btn {
  appearance: none; border: 0; cursor: pointer;
  background: var(--gold); color: #1a1406; font-weight: 700;
  padding: 11px 16px; border-radius: 12px; font-size: 14px;
  display: inline-block; text-decoration: none;
}
a.btn { color: #1a1406; }
a.btn.ghost { color: var(--gold-2); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn.ghost {
  background: transparent; color: var(--gold-2);
  border: 1px solid var(--line);
}
.btn.danger { background: var(--danger); color: white; }
.btn.block { width: 100%; }

label { display: block; font-size: 12px; color: var(--muted); margin: 12px 0 6px; }
input, select, textarea {
  width: 100%; background: var(--bg); color: var(--ink);
  border: 1px solid rgba(255,255,255,0.08); border-radius: 12px;
  padding: 11px 12px; font-size: 14px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--gold); }
textarea { min-height: 90px; resize: vertical; }

.kv { display: grid; grid-template-columns: 92px 1fr; gap: 8px 10px; font-size: 14px; }
.kv b { color: var(--muted); font-weight: 500; }
.kv span, .kv code { word-break: break-all; font-family: var(--mono); font-size: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 8px; border-radius: 999px; font-size: 12px;
  border: 1px solid var(--line); color: var(--gold-2);
}
.badge.ok { color: var(--ok); }
.badge.warn { color: var(--warn); }
.badge.bad { color: var(--danger); }

.alert {
  padding: 12px 14px; border-radius: 12px; margin: 12px 0;
  background: rgba(226, 92, 92, 0.1); color: #ffd0d0; font-size: 13px; line-height: 1.6;
}
.alert.ok { background: rgba(62, 207, 142, 0.1); color: #c7ffe6; }
.alert.warn { background: rgba(224, 178, 90, 0.12); color: #ffe7b3; }

.qr { display: flex; justify-content: center; padding: 12px; background: white; border-radius: 16px; width: fit-content; margin: 12px auto; }
.muted { color: var(--muted); font-size: 13px; line-height: 1.6; }
.wallet-list { display: flex; flex-direction: column; gap: 10px; }
.wallet-item {
  display: flex; justify-content: space-between; gap: 12px; align-items: center;
  padding: 12px; border: 1px solid var(--line); border-radius: 14px; cursor: pointer;
}
.wallet-item:hover { border-color: var(--gold); }
.sig-bar { height: 8px; background: #1b2a36; border-radius: 99px; overflow: hidden; margin: 10px 0; }
.sig-bar > i { display: block; height: 100%; background: var(--gold); }

.wallet-popup {
  max-width: 430px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 18px 16px 40px;
  background: linear-gradient(180deg, #152433, var(--bg) 28%);
}
.wallet-popup-bar {
  text-align: center;
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--gold-2);
  font-weight: 700;
  margin-bottom: 18px;
}
.wallet-popup h2 { margin: 0 0 8px; font-size: 22px; }
.wallet-popup .card { margin-top: 12px; }
details.card summary { cursor: pointer; color: var(--gold-2); font-weight: 700; }
.confirm-box {
  border: 1px dashed var(--gold); padding: 14px; border-radius: 14px; margin: 14px 0;
  background: rgba(201, 162, 39, 0.06);
}
#imtoken-boot {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #071018;
  color: var(--gold-2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 24px;
  text-align: center;
}
#imtoken-boot[hidden] { display: none; }
#imtoken-boot .boot-title {
  letter-spacing: 0.18em;
  font-weight: 700;
  margin: 0 0 16px;
}
#imtoken-boot .boot-msg {
  font-size: 18px;
  color: var(--ink);
  margin: 0 0 10px;
}
#imtoken-boot .boot-sub { color: var(--muted); margin: 0; line-height: 1.6; }

@media (max-width: 640px) {
  .hero h2 { font-size: 26px; }
  .kv { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; align-items: flex-start; }
}