:root {
  --bg: #000000;
  --panel: #111113;
  --border: #27272a;
  --gold: #ECB84A;
  --gold-hover: #f5c76a;
  --text: #fafafa;
  --muted: #a1a1aa;
  --dim: #71717a;
  --red: #f87171;
  --green: #4ade80;
  --radius: 4px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-hover); }
.hidden { display: none !important; }

header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 24px; border-bottom: 1px solid var(--border);
  position: sticky; top: 0; background: var(--bg); z-index: 10;
}
.wordmark { font-weight: 700; font-size: 18px; letter-spacing: 0.5px; color: var(--text); }
.wordmark .shield { color: var(--gold); }
nav { display: flex; gap: 18px; align-items: center; font-size: 14px; }
nav a { color: var(--muted); }
nav a:hover, nav a.active { color: var(--text); }

.btn {
  display: inline-block; background: var(--gold); color: #000; border: none;
  padding: 10px 20px; border-radius: var(--radius); font-weight: 600; font-size: 14px;
  cursor: pointer; transition: background .15s, transform .05s;
}
.btn:hover { background: var(--gold-hover); color: #000; }
.btn:active { transform: scale(0.97); }
.btn.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn.secondary:hover { border-color: var(--dim); background: var(--panel); }
.btn.danger { background: transparent; color: var(--red); border: 1px solid var(--border); }
.btn.small { padding: 5px 12px; font-size: 13px; }
.btn:disabled { opacity: .5; cursor: default; }

main { flex: 1; width: 100%; max-width: 960px; margin: 0 auto; padding: 32px 24px 64px; }
.hero { text-align: center; padding: 64px 0 48px; }
.hero h1 { font-size: 40px; line-height: 1.15; margin-bottom: 16px; }
.hero h1 em { color: var(--gold); font-style: normal; }
.hero p { color: var(--muted); font-size: 18px; max-width: 560px; margin: 0 auto 28px; line-height: 1.6; }
.hero .cta { display: flex; gap: 12px; justify-content: center; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin: 32px 0; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 20px; }
.card h3 { font-size: 16px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 14px; line-height: 1.55; }
.card .big { font-size: 32px; font-weight: 700; color: var(--gold); }

h2.section { font-size: 20px; margin: 36px 0 14px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; color: var(--dim); font-weight: 500; padding: 8px 10px; border-bottom: 1px solid var(--border); }
td { padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
td .preview { color: var(--muted); font-size: 13px; display: block; margin-top: 2px; max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tag { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 12px; border: 1px solid var(--border); color: var(--muted); }
.tag.blocked { color: var(--red); border-color: rgba(248,113,113,.35); }
.tag.allowed { color: var(--green); border-color: rgba(74,222,128,.35); }

.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
input[type=text] {
  background: var(--panel); border: 1px solid var(--border); color: var(--text);
  border-radius: var(--radius); padding: 9px 12px; font-size: 14px; min-width: 180px;
}
input[type=text]:focus { outline: none; border-color: var(--gold); }
select { background: var(--panel); border: 1px solid var(--border); color: var(--text); border-radius: var(--radius); padding: 9px 10px; font-size: 14px; }

.pairbox { text-align: center; padding: 24px; }
.pairbox img { border-radius: 8px; background: #fff; padding: 8px; }
.paircode { font-size: 30px; letter-spacing: 6px; font-weight: 700; color: var(--gold); margin: 14px 0 6px; font-family: ui-monospace, monospace; }

.notice { background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--gold); border-radius: 0; padding: 14px 16px; font-size: 14px; color: var(--muted); line-height: 1.6; margin: 18px 0; }
.steps { counter-reset: step; margin: 20px 0; }
.step { display: flex; gap: 14px; margin-bottom: 18px; }
.step::before {
  counter-increment: step; content: counter(step);
  flex: 0 0 28px; height: 28px; border-radius: 50%; background: var(--gold); color: #000;
  font-weight: 700; display: flex; align-items: center; justify-content: center; font-size: 14px;
}
.step div { flex: 1; }
.step h4 { font-size: 15px; margin-bottom: 4px; }
.step p { color: var(--muted); font-size: 14px; line-height: 1.55; }
article { line-height: 1.7; }
article h2 { margin: 28px 0 10px; font-size: 20px; }
article p, article li { color: var(--muted); font-size: 15px; margin-bottom: 10px; }
article ul { padding-left: 22px; }

footer {
  border-top: 1px solid var(--border); padding: 20px 24px; display: flex;
  align-items: center; justify-content: space-between; color: var(--dim); font-size: 13px;
}
footer .powered { display: flex; align-items: center; gap: 8px; }
footer img { height: 22px; }
#userChip { color: var(--muted); font-size: 13px; }
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: var(--panel); border: 1px solid var(--gold); color: var(--text);
  padding: 10px 18px; border-radius: var(--radius); font-size: 14px; z-index: 100;
}
@media (max-width: 640px) {
  .hero h1 { font-size: 30px; }
  nav { gap: 12px; }
  main { padding: 20px 16px 48px; }
}