#kas-content section.kas-checkout {
  --kas-bg-color: #ffffff;
  --kas-foreground-color: #0f172a;
  --kas-muted-color: #475569;
  --kas-border-color: #e5e7eb;
  --kas-accent-color: #2563eb;
  --kas-success-color: #047857;
  --kas-error-color: #b91c1c;
  --kas-radius: 14px;
  --kas-gap: 18px;
  line-height: 1.5;
  width: 100%;
  max-width: 1180px;
  margin: 28px auto;
  padding: 8px 16px 36px;
  color: var(--kas-foreground-color);
  border: 0;
  box-shadow: none;
  background: transparent;
  -webkit-font-smoothing:antialiased;
}

.kas-checkout a:not(.kas-button) {
  all: unset;
  cursor: pointer;
  font-size: inherit;
  color: inherit;
  text-decoration: underline !important;
}

.kas-checkout a:not(.kas-button):hover {
  text-decoration: none !important;
}

.kas-checkout-layout {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: var(--kas-gap);
  align-items: start;
}

.kas-checkout-main,
.kas-checkout-side {
  display: grid;
  gap: 25px;
  align-content: start;
}

.kas-checkout-title {
  font-size: 28px;
  line-height: 1.15;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--kas-foreground-color);
}

.kas-checkout-product-title {
  font-size: 150% !important;
  font-weight: 700 !important;
  line-height: 1.5 !important;
  margin-bottom: 25px !important;
}

.kas-checkout-product-content {

}

.kas-checkout-product-content * {
  padding: 0;
  margin: 0;
  margin-bottom: 15px;
}

.kas-checkout-product-content *:last-child {
  margin-bottom: 0;
}

.kas-checkout-product-content ol,
.kas-checkout-product-content ul {
  padding-left: 25px;
}

.kas-checkout-product-content ol li,
.kas-checkout-product-content ul li {
  margin-top: 4px;
  margin-bottom: 4px;
}

.kas-checkout-product-content a {
  color: var(--kas-accent-color);
  text-decoration: underline;
}

.kas-checkout-product-content h2,
.kas-checkout-product-content h3 {
  margin-top: 15px;
  margin-bottom: 15px;
}

.kas-checkout-product-content h2 {
  border: none !important;
  border-top: 1px solid #000 !important;
  margin-top: 10px !important;
  padding-top: 10px !important;
  border-bottom: 1px solid #000 !important;
  margin-bottom: 10px !important;
  padding-bottom: 10px !important;
  font-size: 110% !important;
  line-height: 1.5 !important;
  color: inherit !important;
}

.kas-checkout-product-title {
  padding-top: 10px;
}

.kas-checkout-form {
  display: grid;
  gap: 18px;
}

.kas-checkout-progress {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: 10px;
  max-width: 760px;
  margin: 0 auto 8px;
  margin-bottom: 50px;
  padding: 0 16px;
  --kas-progress-node-size: 36px;
  z-index: 0;
}

.kas-checkout-progress-track,
.kas-checkout-progress-fill {
  position: absolute;
  left: calc(16px + (var(--kas-progress-node-size) / 2));
  right: calc(16px + (var(--kas-progress-node-size) / 2));
  top: calc((var(--kas-progress-node-size) / 2) - 1px);
  height: 2px;
  border-radius: 999px;
  z-index: 1;
}

.kas-checkout-progress-track {
  background: var(--kas-border-color);
}

.kas-checkout-progress-fill {
  background: var(--kas-accent-color);
  width: var(--kas-checkout-progress, 0%);
  right: auto;
  transition: width .35s ease;
}

.kas-checkout-progress .progress-step {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 8px;
  color: #64748b;
}

.kas-checkout-progress .step-number {
  display: grid;
  place-items: center;
  width: var(--kas-progress-node-size);
  height: var(--kas-progress-node-size);
  border-radius: 999px;
  border: 2px solid #cbd5e1;
  background: #ffffff;
  font-weight: 700;
  font-size: 14px;
  line-height: 1;
  transition: all .2s ease;
}

.kas-checkout-progress .step-label {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
}

.kas-checkout-progress .progress-step.completed {
  color: #0f172a;
}

.kas-checkout-progress .progress-step.completed .step-number {
  border-color: var(--kas-accent-color);
  background: #ffffff;
  color: var(--kas-accent-color);
  box-shadow: none;
}

.kas-checkout-progress .progress-step.active {
  color: #0f172a;
}

.kas-checkout-progress .progress-step.active .step-number {
  border-color: var(--kas-accent-color);
  background: var(--kas-accent-color);
  color: #ffffff;
  box-shadow: 0 0 0 6px rgba(37,99,235,0.12);
}

.kas-checkout-progress .progress-step.upcoming .step-number {
  background: #ffffff;
  color: #64748b;
}

.kas-checkout-block + .kas-checkout-block {
  margin-top: 0;
}

.kas-checkout > .kas-checkout-block + .kas-checkout-block {
  margin-top: 25px;
}

.kas-checkout-block {
  display: block;
  padding: 18px;
  background: var(--kas-bg-color);
  border-radius: var(--kas-radius);
  border: 1px solid var(--kas-border-color);
  box-shadow: 0 6px 18px rgba(15,23,42,0.04);
}

.kas-checkout-block.light-yellow {
  background: #fff1be;
  border-color: #f4e096;
}

.kas-checkout-block h3 {
  font-size: 18px;
  line-height: 1.3;
  font-weight: 700;
  margin: 0;
  margin-bottom: 15px;
}

.kas-checkout-flex-rows {
  display: block;
}

.kas-checkout-flex-row {
  display: flex;
  flex-direction: row;
  text-align: left;
  gap: 18px;
  border-bottom: 1px solid #eaeaea;
}

.kas-checkout-flex-row.highlight {
  font-weight: bold;
}

.kas-checkout-flex-row:last-child {
  border-bottom: none;
}

.kas-checkout-flex-column {
  width: 50%;
  padding-top: 10px;
  padding-bottom: 10px;
}

.kas-checkout-flex-column svg {
  margin-right: 5px;
}

.kas-checkout-flex-column.color-gray {
  color: #64748b;
  fill: #64748b;
}

.kas-checkout-flex-column.color-green {
  color: green;
  fill: green;
}

.kas-checkout-flex-column.color-orange {
  color: orange;
  fill: orange;
}

.kas-checkout-flex-column.color-blue {
  color: blue;
  fill: blue;
}

.kas-checkout-flex-column.color-purple {
  color: purple;
  fill: purple;
}

.kas-checkout-flex-column.color-red {
  color: red;
  fill: red;
}

.kas-checkout-flex-column.title-column {
  font-weight: bold;
}

.kas-checkout-flex-row.align-v-center > *,
.kas-checkout-flex-row.align-v-center > * > * {
  display: flex;
  align-items: center;
}

.kas-checkout-flex-row.align-h-center > *,
.kas-checkout-flex-row.align-h-center > * > * {
  display: flex;
  justify-content: center;
}

.kas-checkout-product-card,
.kas-checkout-block {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 14px;
  box-shadow: 0 1px 1px rgba(0, 0, 0, 0.02), 0 10px 24px rgba(15, 23, 42, 0.04);
}

.kas-checkout-product-card {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 14px;
  padding: 18px;
  align-items: start;
}

.kas-checkout-product-cover-container,
.kas-checkout-product-cover-wrap {
  width: 150px;
  min-height: 150px;
  max-width: 150px;
}

.kas-checkout-product-cover {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 150px;
  object-fit: cover;
  border-radius: 10px;
  /* border: 1px solid #e5e7eb; */
}

.kas-checkout-product-cover-placeholder {
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #f3f4f6, #eef2ff);
  color: #334155;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.kas-checkout-countdown {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}

.kas-checkout-countdown-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: #475569;
}

.kas-checkout-countdown-timer {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.kas-countdown-segment {
  display: grid;
  gap: 6px;
  padding: 10px;
  border-radius: 16px;
  border: 1px solid #dbeafe;
  background: #f8fbff;
  text-align: center;
  min-width: 64px;
  height: 70px;
  max-height: 70px;
}

.kas-countdown-segment * {
  padding: 0;
  margin: 0;
}

.kas-countdown-value {
  display: block;
  font-size: 24px;
  line-height: 1;
  font-weight: 800;
  color: #0f172a;
}

.kas-countdown-unit-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #64748b;
}

.kas-checkout-countdown-status {
  font-size: 13px;
  font-weight: 700;
  color: #2563eb;
  min-height: 18px;
}

.kas-checkout-countdown-timer.kas-countdown-complete .kas-countdown-value {
  opacity: 0.8;
}

@media (max-width: 760px) {
  .kas-checkout-countdown-timer {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 460px) {
  .kas-checkout-countdown-timer {
    grid-template-columns: 1fr;
  }
}

.kas-checkout-amount-rows {
  display: grid;
  gap: 9px;
}

.kas-checkout-amount-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: #334155;
  font-size: 14px;
}

.kas-checkout-amount-row.discount-amount {
  display: none;
  color: #b91c1c;
}

.kas-checkout-amount-row.custom-price-amount {
  display: none;
}

.kas-checkout-amount-row.prepay-amount {
  display: none;
}

.kas-checkout-amount-row.balance-credit-amount {
  display: none;
  color: #065f46;
}

.kas-checkout-amount-row.gross-amount {
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px dashed #d0d0d0;
  font-size: 16px;
}

.kas-checkout-amount-row.gross-amount strong {
  font-size: 20px;
}

.kas-methods {
  display: grid;
  gap: 8px;
}

.kas-method-option {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--kas-border-color);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  transition: box-shadow .12s ease, border-color .12s ease, transform .06s ease;
  background: linear-gradient(180deg, rgba(255,255,255,0.6), rgba(250,250,250,0.6));
}

.kas-method-option:has(input:checked) {
  border-color: var(--kas-accent-color);
  background: rgba(37,99,235,0.06);
  box-shadow: 0 6px 18px rgba(37,99,235,0.06);
  transform: translateY(-1px);
}

.kas-method-option input {
  width: 16px;
  height: 16px;
}

.kas-method-balance-available {
  display: block;
  margin-top: 2px;
  font-size: 12px;
  font-weight: 600;
  color: #475569;
}

.kas-checkout-payment-accordion {
  display: grid;
  gap: 10px;
  margin-top: 14px;
}

.kas-checkout-payment-method {
  border: 1px solid var(--kas-border-color);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
  transition: border-color .15s ease, box-shadow .15s ease;
}

.kas-checkout-payment-method.is-active {
  border-color: var(--kas-accent-color);
  box-shadow: 0 8px 24px rgba(37,99,235,0.08);
}

.kas-checkout-payment-method-toggle {
  all: unset;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  cursor: pointer;
  gap: 12px;
}

.kas-checkout-payment-method-left {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.kas-checkout-payment-method-icon {
  width: 28px;
  height: 28px;
  min-width: 28px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  border: 1px solid #dbe1ea;
  background: #f8fafc;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .03em;
  color: #1e293b;
}

.kas-checkout-payment-method-title {
  font-size: 14px;
  font-weight: 600;
  color: #0f172a;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.kas-checkout-payment-method-chevron {
  font-size: 14px;
  line-height: 1;
  color: #64748b;
  transition: transform .15s ease;
}

.kas-checkout-payment-method.is-active .kas-checkout-payment-method-chevron {
  transform: rotate(180deg);
  color: var(--kas-accent-color);
}

.kas-checkout-payment-method-body {
  border-top: 1px solid #eef2f7;
  padding: 12px 14px 14px;
  background: #fff;
}

.kas-checkout-payment-method-body-content {
  font-size: 14px;
  line-height: 1.45;
  color: #475569;
}

/* Purchase options - styled similarly to payment methods */
.kas-purchase-options,
.kas-checkout-purchase-options-block .kas-purchase-options,
.kas-checkout-purchase-options-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.kas-purchase-options-terms {
  margin-bottom: 10px;
}

.kas-purchase-option,
.kas-checkout-purchase-option,
.kas-checkout-form label.kas-purchase-option,
.kas-checkout-form label.kas-checkout-purchase-option {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--kas-border-color);
  border-radius: 12px;
  padding: 12px;
  cursor: pointer;
  margin-bottom: 0;
  transition: border-color .12s ease, background .12s ease, box-shadow .12s ease;
}
/* left column containing the radio input */
.purchase-option-radio {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: flex-start; /* left-aligned like payment methods */
}

/* right column holds all other information */
.purchase-option-info {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* hide default radio styling; we position ui-radio inside its container */
.kas-purchase-option ui-radio,
.kas-checkout-purchase-option ui-radio {
  flex: 0 0 auto;
  display: inline-block;
}

.kas-purchase-option:has(input:checked),
.kas-checkout-purchase-option:has(input:checked) {
  border-color: var(--kas-accent-color);
  background: rgba(37,99,235,0.06);
  box-shadow: 0 10px 30px rgba(37,99,235,0.06);
}

.kas-checkout-purchase-options-block:not(.multiple-options) .kas-checkout-purchase-option:has(input:checked) {
  /* border-color: var(--kas-border-color);
  background: transparent;
  box-shadow: none; */
}

.kas-purchase-option.best-value > ui-radio,
.kas-checkout-purchase-option.best-value > ui-radio {
  border-color: #059669;
  background: #f0fdf4;
}

.purchase-option-main,
.kas-checkout-purchase-options-block .purchase-option-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex: 1 1 auto;
}

.option-left {
  display: flex;
  flex-direction: column;
}

.option-name {
  font-weight: 700;
  font-size: 115%;
  color: #0f172a;
  margin-bottom: 2px;
}

.option-meta {
  font-size: 13px;
  color: #475569;
}

.option-right {
  text-align: right;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.option-price-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: #64748b;
}

.option-price {
  font-weight: 700;
  color: #0f172a;
}

.option-secondary-price {
  font-size: 13px;
  color: #475569;
}

.option-secondary-price strong {
  color: #0f172a;
}

.option-monthly {
  font-size: 13px;
  color: #475569;
}

.option-discount {
  display: inline-block;
  margin-top: 4px;
  background: linear-gradient(90deg,#fff1f2,#fee2e2);
  color: #991b1b;
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 12px;
}

/* Spinners for loading states in checkout (multiple sizes). Smallest is 16px */
:root {
  --kas-spinner-color: #2563eb;
  --kas-spinner-duration: 0.9s;
}

@keyframes kas-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.kas-checkout-spinner {
  display: inline-block;
  border-radius: 50%;
  box-sizing: border-box;
  border-style: solid;
  border-color: rgba(0,0,0,0.08);
  border-top-color: var(--kas-spinner-color);
  animation: kas-spin var(--kas-spinner-duration) linear infinite;
}

/* size variants */
.kas-checkout-spinner--xs { width: 16px; height: 16px; border-width: 2px; }
.kas-checkout-spinner--sm { width: 20px; height: 20px; border-width: 2px; }
.kas-checkout-spinner--md { width: 24px; height: 24px; border-width: 3px; }
.kas-checkout-spinner--lg { width: 32px; height: 32px; border-width: 3px; }
.kas-checkout-spinner--xl { width: 48px; height: 48px; border-width: 4px; }

/* Visually hidden text for accessibility when used as an inline status */
.kas-checkout-spinner[role="status"]::after {
  content: '';
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.purchase-option-note {
  margin-top: 8px;
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: #374151;
}

.purchase-option-note-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.purchase-option-note-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  color: #334155;
  line-height: 1.3;
}

.kas-variable-price {
  margin-top: 10px;
  padding: 10px;
  border: 1px dashed #dbe1ea;
  border-radius: 10px;
  background: #f8fafc;
}

.kas-variable-price-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #334155;
  margin-bottom: 6px;
}

.kas-variable-price-input-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.kas-variable-price-input {
  width: 100%;
  max-width: 220px;
  height: 40px;
  padding: 8px 10px;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  background: #fff;
  box-sizing: border-box;
}

.kas-variable-price-input:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37,99,235,0.12);
}

.kas-variable-price-currency {
  font-size: 13px;
  font-weight: 700;
  color: #475569;
}

.kas-variable-price-help {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: #64748b;
}

.kas-variable-price-error {
  display: block;
  min-height: 16px;
  margin-top: 4px;
  font-size: 12px;
  color: #b91c1c;
}

.kas-checkout-quantity-block {
  
}

.kas-checkout-quantity-available {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: #64748b;
}

.kas-checkout-quantity-error {
  display: block;
  min-height: 16px;
  margin-top: 4px;
  font-size: 12px;
  color: #b91c1c;
}

.discount-badge {
  background: linear-gradient(90deg,#fef3c7,#fde68a);
  color: #92400e;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
}

.best-label {
  background: #059669;
  color: #ffffff;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
}

.savings {
  color: #065f46;
  font-weight: 600;
}

/* Small screens */
@media (max-width: 640px) {
  .kas-checkout-progress {
    padding: 0 8px;
    --kas-progress-node-size: 30px;
  }

  .kas-checkout-progress-track,
  .kas-checkout-progress-fill {
    left: calc(8px + (var(--kas-progress-node-size) / 2));
    right: calc(8px + (var(--kas-progress-node-size) / 2));
  }

  .kas-checkout-progress .step-label {
    font-size: 12px;
  }

  .purchase-option-main {
    flex-direction: column;
    align-items: flex-start;
  }
  .option-right {
    align-items: flex-start;
  }
  .purchase-option-note {
    width: 100%;
  }
}

.kas-checkout-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.kas-checkout-form fieldset {
  all: unset;
  margin: 0;
  margin-top: 15px;
  border: 0;
  padding: 0;
}

.kas-checkout-form label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  color: var(--kas-muted-color);
  font-weight: 600;
}

.kas-checkout-form input[type="text"],
.kas-checkout-form input[type="email"] {
  width: 100%;
  border: 1px solid #d4d9e1;
  border-radius: 10px;
  padding: 10px 12px;
  box-sizing: border-box;
  font-size: 14px;
  background: #fff;
}

.kas-checkout-form ui-select .ui-select-control {
  border-color: #d4d9e1;
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 14px;
}

.kas-checkout-form input[type="text"]:focus,
.kas-checkout-form input[type="email"]:focus,
.kas-checkout-form ui-select .ui-select-control:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.kas-checkout-invalid-field {
  border-color: #c2410c !important;
  box-shadow: 0 0 0 4px rgba(194, 65, 12, 0.12) !important;
}

.kas-address-toggle-wrap {
  margin-top: 10px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.kas-address-toggle-wrap label {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
}

.kas-address-field {
  margin-top: 10px;
}

.kas-voucher-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.kas-voucher-message {
  margin: 8px 0 0;
  min-height: 18px;
  font-size: 13px;
  color: #0f766e;
}

.kas-voucher-message.kas-voucher-error {
  color: #b91c1c;
}

.kas-confirmation-list {
  display: grid;
  gap: 8px;
}

.kas-checkout-confirmation-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--kas-muted-color);
  font-weight: 500;
  line-height: 1.35;
  padding: 6px 4px;
}

.kas-checkout-actions {
  margin-top: 18px;
}

.kas-checkout-actions-withdrawal-notice {
   margin-top: 5px;
   margin-bottom: 15px;
}

.kas-checkout-info {

}

.kas-checkout-buy,
.kas-checkout-notify {
  width: 100%;
  min-height: 48px;
  font-weight: 700;
  border-radius: 10px;
  padding: 10px 16px;
  background: var(--kas-accent-color);
  color: #fff;
  border: 1px solid rgba(0,0,0,0.06);
  box-shadow: 0 8px 20px rgba(37,99,235,0.08);
  cursor: pointer;
  transition: transform .08s ease, box-shadow .12s ease, opacity .08s ease;
}

.kas-checkout-buy:hover,
.kas-checkout-notify:hover {
  transform: translateY(-1px);
  opacity: 0.98;
}

.kas-checkout-buy:disabled,
.kas-checkout-notify:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.kas-checkout-button {
  --kas-checkout-button-bg: var(--kas-accent-color);
  --kas-checkout-button-color: #ffffff;
  --kas-checkout-button-border: var(--kas-accent-color);
  --kas-checkout-button-shadow: 0 8px 20px rgba(37,99,235,0.12);
  appearance: none;
  -webkit-appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid var(--kas-checkout-button-border);
  border-radius: 10px;
  background: var(--kas-checkout-button-bg);
  color: var(--kas-checkout-button-color);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
  box-shadow: var(--kas-checkout-button-shadow);
  cursor: pointer;
  transition: transform .08s ease, box-shadow .12s ease, opacity .12s ease, background-color .12s ease, border-color .12s ease, color .12s ease;
}

.kas-checkout-button-disabled,
.kas-checkout-button:disabled,
.kas-checkout-button[disabled] {
  border: none;
  box-shadow: none;
  user-select: none;
  pointer-events: none;
  background-color: #ccc;
}

.kas-checkout-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 24px rgba(15,23,42,0.14);
}

.kas-checkout-button:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(37,99,235,0.18), var(--kas-checkout-button-shadow);
}

.kas-checkout-button:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(15,23,42,0.12);
}

.kas-checkout-button:disabled,
.kas-checkout-button.is-disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
  box-shadow: none;
}

.kas-checkout-button--block {
  display: flex;
  width: 100%;
}

.kas-checkout-button--xs {
  min-height: 30px;
  padding: 6px 10px;
  border-radius: 8px;
  font-size: 12px;
  gap: 6px;
}

.kas-checkout-button--sm {
  min-height: 36px;
  padding: 8px 12px;
  font-size: 13px;
}

.kas-checkout-button--md {
  min-height: 42px;
  padding: 10px 16px;
  font-size: 14px;
}

.kas-checkout-button--lg {
  min-height: 48px;
  padding: 12px 18px;
  font-size: 15px;
  border-radius: 12px;
}

.kas-checkout-button--xl {
  min-height: 54px;
  padding: 14px 22px;
  font-size: 16px;
  border-radius: 12px;
}

.kas-checkout-button--primary {
  --kas-checkout-button-bg: var(--kas-accent-color);
  --kas-checkout-button-color: #ffffff;
  --kas-checkout-button-border: var(--kas-accent-color);
  --kas-checkout-button-shadow: 0 8px 20px rgba(37,99,235,0.14);
}

.kas-checkout-button--secondary {
  --kas-checkout-button-bg: #ffffff;
  --kas-checkout-button-color: var(--kas-foreground-color);
  --kas-checkout-button-border: var(--kas-border-color);
  --kas-checkout-button-shadow: 0 6px 18px rgba(15,23,42,0.06);
}

.kas-checkout-button--muted {
  --kas-checkout-button-bg: #f8fafc;
  --kas-checkout-button-color: var(--kas-muted-color);
  --kas-checkout-button-border: #dbe1ea;
  --kas-checkout-button-shadow: 0 4px 14px rgba(15,23,42,0.05);
}

.kas-checkout-button--ghost {
  --kas-checkout-button-bg: transparent;
  --kas-checkout-button-color: var(--kas-accent-color);
  --kas-checkout-button-border: transparent;
  --kas-checkout-button-shadow: none;
}

.kas-checkout-button--outline {
  --kas-checkout-button-bg: rgba(37,99,235,0.04);
  --kas-checkout-button-color: var(--kas-accent-color);
  --kas-checkout-button-border: rgba(37,99,235,0.22);
  --kas-checkout-button-shadow: 0 4px 14px rgba(37,99,235,0.06);
}

.kas-checkout-button--soft {
  --kas-checkout-button-bg: rgba(37,99,235,0.08);
  --kas-checkout-button-color: var(--kas-accent-color);
  --kas-checkout-button-border: rgba(37,99,235,0.14);
  --kas-checkout-button-shadow: 0 4px 12px rgba(37,99,235,0.08);
}

@media (max-width: 960px) {
  .kas-checkout-layout {
    gap: 14px;
    grid-template-columns: 1fr;
  }

  .kas-checkout-product-card {
    grid-template-columns: 1fr;
    gap: 12px;
    align-items: start;
  }

  .kas-checkout-product-cover-wrap {
    max-width: 100%;
  }

  .kas-checkout-form {
    gap: 14px;
  }
}

@media (max-width: 640px) {
  .kas-checkout {
    margin-top: 12px;
    padding: 0 10px 22px;
  }

  .kas-checkout-title {
    font-size: 24px;
  }

  .kas-checkout-block,
  .kas-checkout-product-card {
    padding: 12px;
    border-radius: 12px;
  }

  .kas-checkout-form {
    gap: 12px;
  }

  .kas-checkout-form-grid {
    grid-template-columns: 1fr;
  }

  .kas-voucher-row {
    grid-template-columns: 1fr;
  }

  .kas-checkout-payment-method-toggle {
    padding: 10px 12px;
  }

  .kas-checkout-payment-method-body {
    padding: 10px 12px 12px;
  }
}