* { box-sizing: border-box; font-family: Tahoma, sans-serif; }
body { margin: 0; padding: 16px; background: #0f1419; color: #fff; }
.card { background: #1c2733; border-radius: 16px; padding: 20px; max-width: 420px; margin: 0 auto; }
h1 { font-size: 20px; margin: 0 0 8px; }
.hint { font-size: 12px; color: #88aabb; margin-bottom: 18px; }
button { width: 100%; padding: 14px; border: none; border-radius: 12px;
         background: #2ecc71; color: #fff; font-size: 15px; cursor: pointer; margin-top: 10px; }
button#disconnect-btn { background: #e74c3c; }
button#cashout-btn { background: #f39c12; }
button.half { width: 48%; display: inline-block; margin: 2px; background: #3498db; }
.hidden { display: none; }
.addr { font-size: 11px; word-break: break-all; color: #99ccff; }
.bal { font-size: 18px; margin: 12px 0; }
.steps { padding-right: 18px; font-size: 13px; line-height: 1.9; }