.claude-payment-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin: 18px 0; }
.claude-payment-grid fieldset { min-width: 0; margin: 0; padding: 16px; border: 1px solid var(--border, #dde3ed); border-radius: 12px; }
.claude-payment-grid legend { padding: 0 7px; font-weight: 700; }
.claude-payment-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.claude-payment-grid .field { margin: 10px 0; min-width: 0; }
.claude-payment-grid input:not([type=checkbox]), .claude-payment-grid select { width: 100%; min-width: 0; box-sizing: border-box; }
.claude-payment-check { display: flex; align-items: center; gap: 7px; margin: 10px 0; font-size: 13px; }
.claude-payment-check input[type=checkbox] { width: 16px; height: 16px; flex: 0 0 auto; }
@media (max-width: 1100px) { .claude-payment-grid { grid-template-columns: 1fr; } }
@media (max-width: 520px) { .claude-payment-fields { grid-template-columns: 1fr; } }