/* ==========================================================================
   iukoi · checkout.css — 结算页
   ========================================================================== */
.co-head {
  padding: 34px 0 8px;
}
.co-head .h1 {
  margin-top: 20px;
}
.co-head .lead {
  margin-top: 10px;
  max-width: 52ch;
}
.co-empty[hidden],
.checkout-layout[hidden],
.co-success:not(.is-visible) {
  display: none !important;
}
.checkout-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  gap: 56px;
  align-items: start;
  padding: 34px 0 96px;
}
.co-form {
  display: flex;
  flex-direction: column;
  gap: 34px;
}
.co-block {
  border: 1px solid var(--line-soft);
  background: var(--paper);
  border-radius: var(--radius-lg);
  padding: 28px 26px 30px;
}
.co-block__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}
.co-block__head h2 {
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.co-block__head span {
  font-size: 0.72rem;
  color: var(--ink-mute);
  letter-spacing: 0.08em;
}
.co-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.co-grid .field--full {
  grid-column: 1 / -1;
}
.co-radio-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.co-radio {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  cursor: pointer;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
  font-size: 0.88rem;
}
.co-radio:hover {
  border-color: var(--ink-soft);
}
.co-radio input {
  appearance: none;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 1px solid var(--ink-mute);
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  transition: border-color 0.2s var(--ease);
}
.co-radio input::after {
  content: '';
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--strawberry);
  transform: scale(0);
  transition: transform 0.2s var(--ease-spring);
}
.co-radio input:checked {
  border-color: var(--strawberry);
}
.co-radio input:checked::after {
  transform: scale(1);
}
.co-radio:has(input:checked) {
  border-color: var(--strawberry);
  background: rgba(232, 96, 122, 0.05);
}
.co-radio .co-radio__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.co-radio .co-radio__body small {
  font-size: 0.72rem;
  color: var(--ink-mute);
  letter-spacing: 0.02em;
}
.co-radio .co-radio__price {
  margin-left: auto;
  font-size: 0.8rem;
  color: var(--ink-soft);
  white-space: nowrap;
}
.co-submit {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.co-submit .btn {
  min-height: 58px;
  font-size: 1rem;
}
.co-submit p {
  font-size: 0.72rem;
  color: var(--ink-mute);
  text-align: center;
  letter-spacing: 0.03em;
  line-height: 1.7;
}

/* 订单摘要 */
.co-summary {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: var(--cream-2);
  border-radius: var(--radius-lg);
  padding: 28px 26px 26px;
}
.co-summary h2 {
  font-family: var(--font-display);
  font-size: 1.16rem;
  font-weight: 500;
}
.co-items {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 22px 0 20px;
  max-height: 320px;
  overflow-y: auto;
  padding-right: 4px;
}
.co-item {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
}
.co-item img {
  width: 58px;
  height: 58px;
  border-radius: 12px;
  object-fit: cover;
  background: var(--cream);
}
.co-item__name {
  font-size: 0.84rem;
  font-weight: 500;
  line-height: 1.35;
}
.co-item__meta {
  font-size: 0.72rem;
  color: var(--ink-mute);
  margin-top: 2px;
}
.co-item__price {
  font-size: 0.84rem;
  font-weight: 500;
  white-space: nowrap;
}
.co-coupon {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}
.co-coupon input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 11px 14px;
  border: 1px dashed var(--line);
  border-radius: 12px;
  background: var(--paper);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.co-coupon input:focus {
  outline: none;
  border-color: var(--strawberry);
}
.co-coupon .btn {
  min-height: 0;
  padding: 11px 18px;
  font-size: 0.8rem;
}
.co-coupon-msg {
  display: none;
  font-size: 0.72rem;
  color: var(--strawberry);
  margin: -12px 0 16px;
}
.co-coupon-msg.is-visible {
  display: block;
}
.co-totals {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.co-totals div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-size: 0.84rem;
  color: var(--ink-soft);
}
.co-totals dt,
.co-totals dd {
  margin: 0;
}
.co-totals .co-total {
  margin-top: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 1.06rem;
  color: var(--ink);
}
.co-totals .co-total dd {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 500;
}
.co-guarantee {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.74rem;
  color: var(--ink-soft);
}
.co-guarantee li {
  display: flex;
  align-items: center;
  gap: 8px;
}
.co-guarantee svg {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  color: var(--strawberry);
}
.co-empty {
  padding: 90px 0 120px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.co-empty .pd-empty__art {
  display: grid;
  place-items: center;
  width: 112px;
  height: 112px;
  border-radius: 999px;
  background: var(--blush);
  color: var(--strawberry);
}
.co-empty .pd-empty__art svg {
  width: 46px;
  height: 46px;
}
.co-empty .lead {
  max-width: 34ch;
}

/* 成功态 */
.co-success {
  display: none;
  padding: 40px 0 110px;
}
.co-success.is-visible {
  display: block;
}
.co-success__card {
  max-width: 720px;
  margin: 0 auto;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 52px 44px 44px;
  text-align: center;
  box-shadow: var(--shadow);
}
.co-success__art {
  width: 88px;
  height: 88px;
  margin: 0 auto 22px;
  border-radius: 999px;
  background: var(--sage);
  display: grid;
  place-items: center;
  color: var(--ink);
}
.co-success__art svg {
  width: 38px;
  height: 38px;
}
.co-success .h1 {
  font-size: clamp(1.8rem, 3.4vw, 2.6rem);
}
.co-success .lead {
  margin: 14px auto 0;
  max-width: 34ch;
}
.co-success__no {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  margin-top: 22px;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--cream-2);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
}
.co-success__no b {
  font-family: var(--font-display);
  letter-spacing: 0.1em;
}
.co-success__lines {
  margin: 30px 0 0;
  text-align: left;
  border-top: 1px solid var(--line-soft);
  padding-top: 22px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.co-success__lines div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.86rem;
  color: var(--ink-soft);
}
.co-success__lines b {
  color: var(--ink);
  font-weight: 500;
}
.co-success__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 32px;
}
.co-success__note {
  margin-top: 26px;
  font-size: 0.72rem;
  color: var(--ink-mute);
  line-height: 1.8;
}

@media (max-width: 960px) {
  .checkout-layout {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-bottom: 72px;
  }
  .co-summary {
    position: static;
    order: -1;
  }
  .co-head {
    padding-top: 26px;
  }
}
@media (max-width: 640px) {
  .co-grid {
    grid-template-columns: 1fr;
  }
  .co-block {
    padding: 22px 18px 24px;
  }
  .co-summary {
    padding: 22px 18px 24px;
  }
  .co-success__card {
    padding: 38px 22px 32px;
  }
  .co-items {
    max-height: none;
  }
}