/* Shared native commerce presentation. Forms and native component hooks are unchanged. */
.ac-storefront {
    --ac-primary: var(--ai-primary, #245bc1); --ac-bg: #f4f6f9; --ac-ink: #20324a;
    --ac-surface: #fff; --ac-muted: #526174; --ac-border: #dce2e9; --ac-commerce-radius: 14px;
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", system-ui, sans-serif;
}
.ac-storefront[data-font="serif"] { --ac-commerce-radius: 4px; }
.ac-storefront[data-font="rounded"] { --ac-commerce-radius: 22px; }
.ac-storefront:not(.ac-industry) { background: var(--ac-bg); color: var(--ac-ink); }
.ac-storefront .aimeos { color: var(--ac-ink); font-family: inherit; font-size: 16px; line-height: 1.65; }
.ac-storefront .aimeos :is(h1,h2,h3,h4,.btn,input,select,textarea) { font-family: inherit; letter-spacing: normal; text-transform: none; }
.ac-storefront .aimeos :is(button,a,input,select,textarea):focus-visible { outline: 3px solid var(--ac-primary); outline-offset: 3px; }
.ac-storefront .aimeos .btn-primary { background: var(--ac-primary); border-color: var(--ac-primary); color: #fff; }
.ac-storefront .aimeos .btn-primary:hover { filter: brightness(.92); }
.ac-storefront .ac-cart-link { display: inline-flex; align-items: center; min-height: 44px; white-space: nowrap; font-size: 14px; }
.ac-commerce { width: min(1180px, calc(100% - 64px)); margin: 0 auto; padding: 44px 0 64px; }
.ac-commerce-intro { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 28px; }
.ac-commerce-intro h1 { color: var(--ac-ink); font-size: clamp(28px,3vw,38px); line-height: 1.3; font-weight: 650; margin: 0 0 10px; }
.ac-industry[data-font="serif"] .ac-commerce-intro h1 { font-family: "Songti SC", SimSun, serif; font-weight: 500; }
.ac-commerce-eyebrow { color: var(--ac-primary); font-size: 12px; letter-spacing: .12em; margin: 0 0 10px; }
.ac-commerce-description { margin: 0; color: var(--ac-muted); font-size: 14px; line-height: 1.7; }
.ac-continue-shopping { display: inline-flex; align-items: center; gap: 12px; min-height: 44px; color: var(--ac-primary); text-decoration: none; font-size: 14px; white-space: nowrap; }
.ac-commerce .aimeos { margin: 0 0 24px; padding: 0; }
.ac-commerce .aimeos > .container-xxl,
.ac-commerce .checkout-standard > form,
.ac-commerce .checkout-confirm {
    padding: 28px; background: var(--ac-surface); border: 1px solid var(--ac-border);
    border-radius: var(--ac-commerce-radius); max-width: none;
}
.ac-commerce .aimeos :is(h1,h2,h3) { color: var(--ac-ink); font-weight: 600; line-height: 1.5; }
.ac-commerce .aimeos h1 { font-size: 25px; margin: 0 0 8px; }
.ac-commerce .aimeos h2 { font-size: 18px; margin: 0; }
.ac-commerce .aimeos h3 { font-size: 15px; }
.ac-commerce .aimeos .note { color: var(--ac-muted); font-size: 14px; margin: 0 0 24px; }
.ac-commerce .basket-standard > .container-xxl > .header { align-items: center; margin-bottom: 28px; }
.ac-commerce .common-summary-detail > .header { padding: 0 0 16px; margin: 0; }
.ac-commerce :is(.common-summary,.common-summary-detail) .headline { background: var(--ac-bg); color: var(--ac-muted); font-size: 13px; border: 0; padding: 12px; border-radius: 6px; }
.ac-commerce :is(.common-summary,.common-summary-detail) .supplier-name { color: var(--ac-muted); font-size: 12px; padding: 16px 0 0; margin: 0; }
.ac-commerce :is(.common-summary,.common-summary-detail) .product-item { padding: 20px 0; border-bottom: 1px solid var(--ac-border); align-items: center; }
.ac-commerce :is(.common-summary,.common-summary-detail) .product-item .details { padding: 0 12px; overflow-wrap: anywhere; }
.ac-commerce :is(.common-summary,.common-summary-detail) .product-name { color: var(--ac-ink); font-size: 16px; line-height: 1.6; margin-bottom: 4px; font-weight: 600; }
.ac-commerce :is(.common-summary,.common-summary-detail) :is(.code,.attr-list,.product-description) { color: var(--ac-muted); font-size: 12px; margin: 3px 0; }
.ac-commerce :is(.common-summary,.common-summary-detail) .image img { width: 80px; height: 80px; max-width: 100%; object-fit: contain; border-radius: 6px; background: var(--ac-bg); }
.ac-commerce :is(.common-summary,.common-summary-detail) .quantity { display: flex; align-items: center; justify-content: center; gap: 8px; }
.ac-commerce :is(.common-summary,.common-summary-detail) :is(.unitprice,.price) { font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.ac-commerce :is(.common-summary,.common-summary-detail) .quantity input { width: 62px; min-width: 0; height: 44px; padding: 6px; text-align: center; border: 1px solid var(--ac-border); border-radius: 6px; }
.ac-commerce .minibutton { display: inline-flex; justify-content: center; align-items: center; min-width: 44px; min-height: 44px; padding: 8px; border-radius: 6px; color: var(--ac-ink); }
.ac-commerce .minibutton:hover { background: var(--ac-bg); color: var(--ac-primary); }
.ac-commerce .minibutton.change { border: 1px solid var(--ac-border); background: var(--ac-surface); }
.ac-commerce :is(.common-summary,.common-summary-detail) .action { text-align: right; }
.ac-commerce :is(.common-summary,.common-summary-detail) .subtotal,
.ac-commerce :is(.common-summary,.common-summary-detail) .total { padding: 16px 12px; background: var(--ac-bg); border-color: var(--ac-border); }
.ac-commerce :is(.common-summary,.common-summary-detail) .total .price { color: var(--ac-primary); font-size: 21px; font-weight: 700; }
.ac-commerce .input-group { gap: 8px; flex-wrap: nowrap; }
.ac-commerce .input-group .btn { min-width: 80px; width: auto; margin: 0; border: 1px solid var(--ac-border); }
.ac-commerce .aimeos :is(.form-control,.customerref-value,.comment-value,select) { min-height: 44px; padding: 10px 12px; border: 1px solid var(--ac-border); border-radius: 6px; background: var(--ac-surface); color: var(--ac-ink); font: inherit; font-size: 14px; min-width: 0; }
.ac-commerce .aimeos input::placeholder { color: var(--ac-muted); opacity: 1; }
.ac-commerce .basket-standard-coupon { align-items: center; padding: 20px 0; border-bottom: 1px solid var(--ac-border); margin-inline: 0; }
.ac-commerce .basket-standard-coupon .header { text-align: start; }
.ac-commerce .button-group { display: flex; gap: 12px; justify-content: flex-end; flex-wrap: wrap; padding: 24px 0 0; margin: 0; }
.ac-commerce .button-group .btn { width: auto; min-width: 140px; max-width: none; min-height: 48px; padding: 11px 28px; margin: 0; border-radius: var(--ac-commerce-radius); font-size: 15px; line-height: 1.6; }
.ac-commerce .btn-default { color: var(--ac-ink); background: var(--ac-surface); border: 1px solid var(--ac-border); }
.ac-commerce .btn:disabled { opacity: .55; cursor: not-allowed; }
.ac-commerce .basket-bulk .container-xxl { border-style: dashed; }
.ac-commerce .basket-bulk .header { margin-bottom: 16px; }
.ac-commerce .checkout-standard > nav.container-xxl { background: transparent; padding: 0; border: 0; }
.ac-commerce .checkout-standard .steps { display: flex; gap: 8px; margin: 0 0 20px; padding: 0; counter-reset: ac-step; background: transparent; }
.ac-commerce .checkout-standard .steps .step { flex: 1; padding: 12px 8px; border: 1px solid var(--ac-border); border-radius: var(--ac-commerce-radius); background: var(--ac-surface); color: var(--ac-muted); font-size: 14px; text-transform: none; letter-spacing: normal; text-align: center; min-width: 0; }
.ac-commerce .checkout-standard .steps .step::before,
.ac-commerce .checkout-standard .steps .step::after { display: none; }
.ac-commerce .checkout-standard .steps .step.current { border-color: var(--ac-primary); background: var(--ac-primary); color: #fff; font-weight: 600; }
.ac-commerce .checkout-standard .steps .step a { color: inherit; }
.ac-commerce .checkout-standard .section { margin: 0; padding: 0; border: 0; }
.ac-commerce .checkout-standard-summary > .row { margin-inline: 0; }
.ac-commerce .common-summary-service { padding: 20px 0; border-block: 1px solid var(--ac-border); margin-bottom: 24px; }
.ac-commerce .common-summary-service .header,
.ac-commerce .common-summary-detail .header { display: flex; justify-content: space-between; align-items: center; }
.ac-commerce .common-summary-additional { padding-bottom: 24px; row-gap: 20px; }
.ac-commerce .common-summary-additional .content :is(input,textarea) { width: 100%; }
.ac-commerce .common-summary-additional textarea { min-height: 88px; }
.ac-commerce .checkout-standard-summary-option { padding: 20px; margin-bottom: 28px; background: var(--ac-bg); border-radius: 6px; }
.ac-commerce .checkout-standard-summary-option .single { display: flex; gap: 12px; align-items: flex-start; font-size: 14px; }
.ac-commerce input[type="checkbox"], .ac-commerce input[type="radio"] { accent-color: var(--ac-primary); width: 20px; height: 20px; min-height: 20px; flex-shrink: 0; margin-top: 3px; }
.ac-commerce .checkout-standard-summary-option a { color: var(--ac-primary); text-decoration: underline; text-underline-offset: 3px; }
.ac-commerce .checkout-standard-summary-option label { flex: 1; line-height: 1.8; }
.ac-commerce .error-list { border: 1px solid #dfbeb8; background: #fff4f2; color: #9d2b23; border-radius: 6px; padding: 16px 20px; margin-bottom: 24px; }
.ac-commerce .checkout-confirm { margin: 0; }
.ac-commerce .checkout-confirm-detail { margin: 28px 0; }
@media (max-width: 767px) {
    .ac-commerce { width: calc(100% - 32px); padding: 26px 0 40px; }
    .ac-commerce-intro { gap: 12px; align-items: flex-start; margin-bottom: 20px; }
    .ac-commerce-eyebrow { display: none; }
    .ac-commerce-intro h1 { font-size: 28px; }
    .ac-continue-shopping { font-size: 13px; }
    .ac-commerce .aimeos > .container-xxl, .ac-commerce .checkout-standard > form, .ac-commerce .checkout-confirm { padding: 18px 16px; }
    .ac-commerce .basket-standard > .container-xxl > .header { gap: 14px; margin-bottom: 24px; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .headline { display: none; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item { gap: 16px; padding: 18px 0; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item > div { width: 100%; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item > div:first-child > .row { flex-wrap: nowrap; align-items: center; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .status { width: auto; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .image { width: 68px; flex-shrink: 0; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .details { flex: 1; width: auto; min-width: 0; padding-inline: 12px 0; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .image img { height: 68px; width: 68px; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .order { display: grid; grid-template-columns: 1fr 1fr 44px; gap: 12px 8px; align-items: center; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .order > div { width: auto; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .quantity { grid-column: 1 / 3; grid-row: 1; justify-content: flex-start; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .action { grid-column: 3; grid-row: 1; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .unitprice { display: block; grid-column: 1; font-size: 13px; color: var(--ac-muted); text-align: left; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .unitprice::before { content: "单价 "; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .price { display: block; grid-column: 2 / 4; font-weight: 650; text-align: right; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .product-item .price::before { content: "小计 "; font-weight: 400; font-size: 13px; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .total { align-items: center; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .total .quantity { font-size: 13px; }
    .ac-commerce :is(.common-summary,.common-summary-detail) .total .price { font-size: 18px; }
    .ac-commerce .basket-standard-coupon { gap: 12px; padding: 18px 0; }
    .ac-commerce .basket-standard-coupon > div { padding: 0; }
    .ac-commerce .button-group { gap: 10px; padding-top: 20px; }
    .ac-commerce .button-group .btn { flex: 1; min-width: 120px; padding-inline: 12px; }
    .ac-commerce .checkout-standard .steps { gap: 6px; flex-wrap: wrap; }
    .ac-commerce .checkout-standard .steps .step { font-size: 12px; padding: 10px 4px; }
    .ac-commerce .common-summary-additional > .item { width: 100%; padding: 0; }
    .ac-commerce .checkout-standard-summary-option { padding: 16px; }
    .ac-commerce .basket-bulk .details input { width: 100%; min-width: 0; }
    .ac-storefront .ac-header-main { gap: 14px; }
}
@media (prefers-reduced-motion: reduce) {
    .ac-storefront *, .ac-storefront *::before, .ac-storefront *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

.ac-storefront:not(.ac-industry) .navbar-top { background: var(--ac-ink); min-height: 80px; padding-block: 20px; }
.ac-storefront:not(.ac-industry) > footer { background: var(--ac-ink); }
.ac-commerce .common-summary-service .header, .ac-commerce .common-summary-additional .header { border-bottom: 0; padding-bottom: 8px; }
.ac-commerce .common-summary-service .content { padding: 8px 0; }
.ac-commerce .checkout-standard-summary { padding-top: 0; }

/* Keep native field layout compact; upstream headers reserve four rem. */
.ac-commerce .aimeos .common-summary .header { min-height: 0; padding: 0 0 8px; border-bottom: 0; }
.ac-commerce .aimeos .common-summary .content { margin: 0; padding: 8px 0 0; }
.ac-commerce .aimeos .common-summary-service { padding: 18px 0; }
.ac-commerce .aimeos .common-summary-service .item h4 { margin: 0; color: var(--ac-ink); }
.ac-commerce .aimeos .common-summary-additional :is(.coupon,.comment) { height: auto; }
.ac-commerce .aimeos .common-summary-additional .coupon .content:empty::before { content: "未使用优惠码"; color: var(--ac-muted); font-size: 14px; }