.billing_section { padding: 80px 0; }
.billing_card { max-width: 560px; margin: 0 auto; padding: 40px; border: 1px solid #FCC6C4; border-radius: 24px; background: #fff; text-align: center; box-sizing: border-box; }
.billing_logo { width: 150px; max-width: 100%; margin-bottom: 32px; }
.billing_card h1 { margin: 0 0 24px; font-size: 30px; line-height: 1.2; }
.billing_card p { margin: 0 0 20px; color: #424248; }
.billing_card .billing_test { padding: 12px; border-radius: 12px; background: #FFF0E4; font-size: 14px; }
.billing_card .billing_error { color: #CB3D38; }
.billing_form { display: flex; flex-direction: column; gap: 16px; text-align: left; }
.billing_form label { font-weight: 600; }
.billing_form input[name=amount] { width: 100%; padding: 12px 16px; font-size: 20px; }
.billing_form .billing_hint { margin: 0; font-size: 14px; }
.billing_form .billing_error { margin: 0; }
.billing_card .button { justify-content: center; width: 100%; box-sizing: border-box; font-family: inherit; font-size: 16px; line-height: 1.5; }
.billing_form button:disabled, [data-billing-refresh]:disabled { cursor: wait; opacity: .6; }
.billing_back { display: inline-block; margin-top: 24px; color: #424248; }
.billing_card .billing_amount { font-size: 32px; font-weight: 700; color: #1D1D1F; }
.billing_amount span { font-size: 20px; }
.billing_actions { display: flex; flex-direction: column; gap: 16px; }
.billing_actions .billing_back { margin-top: 0; }
.billing_card [hidden] { display: none !important; }
.billing_history_status { display: block; font-size: 12px; font-weight: 400; }
.table_expert_method .billing_history_link { color: inherit; }
@media (max-width: 620px) {
    .billing_section { padding: 40px 0; }
    .billing_card { padding: 28px 20px; }
    .billing_card h1 { font-size: 26px; }
}