.gtbp-card{max-width:720px;margin:10px auto;padding:16px;border:1px solid #e5e7eb;border-radius:16px;box-shadow:0 6px 20px rgba(0,0,0,0.06);font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
.gtbp-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.gtbp-row .full{grid-column:1/-1}
.gtbp-card h3{margin:0 0 12px;font-size:20px}
.gtbp-input{display:flex;flex-direction:column;gap:6px}
.gtbp-input input,.gtbp-input select{padding:10px 12px;border:1px solid #d1d5db;border-radius:12px;font-size:15px}
.gtbp-amount{font-weight:800;font-size:20px}
.gtbp-actions{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-top:6px}
.gtbp-btn{padding:12px 14px;border-radius:12px;border:0;background:#0a6cff;color:#fff;font-weight:700;cursor:pointer}
@media (max-width:640px){.gtbp-row{grid-template-columns:1fr}}