.sbs-root { max-width: 960px; margin: 0 auto; font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
.sbs-card { background: #fff; border: 1px solid #e6e6e6; border-radius: 14px; padding: 22px; margin: 18px 0; box-shadow: 0 1px 2px rgba(0,0,0,.03); }
.sbs-hidden { display: none; }
/* .sbs-grid { display: grid; grid-template-columns: repeat(1, minmax(0, 1fr)); gap: 14px; } */
.sbs-grid {  }
.sbs-col-span-2 { grid-column: span 2; }
.sbs-field { display: block; width: 100%; }
.sbs-field label { display: block; font-weight: 600; margin-bottom: 6px; }
.sbs-field input, .sbs-field select, .sbs-field textarea {
    width: 50%; padding: 10px 12px; border: 1px solid #ddd; border-radius: 10px; font-size: 14px;
}
.sbs-actions { margin-top: 14px; display: flex; gap: 10px; justify-content: flex-end; }
.sbs-btn { background: #111827; color: #fff; border: none; border-radius: 12px; padding: 10px 16px; cursor: pointer; font-weight: 600; }
.sbs-btn:disabled { opacity: .6; cursor: not-allowed; }
.sbs-amount-line { font-size: 16px; margin-bottom: 12px; }
.sbs-messages { margin-top: 10px; color: #b91c1c; min-height: 1.2em; }
@media (max-width: 640px) { .sbs-grid { grid-template-columns: 1fr; } .sbs-col-span-2 { grid-column: auto; } }