/* ==========================================================================
   b2c.css — 现代 B2C 体验层（在 style.css 之后加载）
   目标：清晰的转化路径、可信的静态信息、移动端优先的可用性。
   注意：本站为静态展示站，不提供购物车/结账；购买动作一律跳转到 Shopify。
   ========================================================================== */

:root {
  --radius-card: 14px;
  --radius-btn: 10px;
  --shadow-1: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-2: 0 6px 16px rgba(15, 23, 42, 0.1), 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-3: 0 18px 40px rgba(15, 23, 42, 0.16);
  --ring: 0 0 0 3px rgba(220, 38, 38, 0.28);
}

/* 键盘可达性 */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: none;
  box-shadow: var(--ring);
  border-radius: 6px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ------------------------------ 公告栏 --------------------------------- */
.announcement {
  padding: 12px 16px;
  font-size: 12.5px;
  letter-spacing: 0.02em;
}
.announcement .container {
  display: flex;
  justify-content: center;
  text-align: center;
}

/* ------------------------------ 按钮体系 -------------------------------- */
.btn {
  border-radius: var(--radius-btn);
  gap: 7px;
  padding: 13px 26px;
}
.btn--sm {
  padding: 9px 16px;
  font-size: 12px;
  letter-spacing: 0.08em;
}
.btn--lg {
  padding: 16px 32px;
  font-size: 14px;
}
.btn--block {
  width: 100%;
}
.btn:hover {
  box-shadow: var(--shadow-2);
}
.btn svg {
  flex: none;
  opacity: 0.9;
}

/* ------------------------------ 信任条 --------------------------------- */
.trust-strip {
  background: rgb(var(--color-soft));
  border-bottom: 1px solid rgb(var(--color-line));
}
.trust-strip .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding-top: 26px;
  padding-bottom: 26px;
}
.trust {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}
.trust__icon {
  flex: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid rgb(var(--color-line));
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgb(var(--color-button));
}
.trust__icon svg {
  width: 20px;
  height: 20px;
}
.trust__title {
  margin: 0 0 2px;
  font-family: var(--font-heading);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.trust__text {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.5;
  color: rgb(var(--color-muted));
}

/* ------------------------------ 分类卡片 -------------------------------- */
.category-card {
  border-radius: var(--radius-card);
  border: 1px solid rgb(var(--color-line));
  box-shadow: var(--shadow-1);
  overflow: hidden;
}
.category-card:hover {
  box-shadow: var(--shadow-2);
}
.category-card__media {
  aspect-ratio: 4 / 3;
}
.category-card__title {
  font-size: 13.5px;
}

/* ------------------------------ 商品卡片 -------------------------------- */
.product-grid {
  gap: 28px 22px;
}
.product-card {
  border-radius: var(--radius-card);
}
.product-card__media {
  border-radius: var(--radius-card);
  border: 1px solid rgb(var(--color-line));
  background: #fff;
  overflow: hidden;
}
.product-card:hover .product-card__media {
  box-shadow: var(--shadow-2);
}
.product-card__media img {
  padding: 10px;
}
.product-card__badge {
  top: 12px;
  left: 12px;
  border-radius: 999px;
  font-size: 11px;
  padding: 5px 11px;
  box-shadow: var(--shadow-1);
}
.product-card__badge--out {
  left: auto;
  right: 12px;
  background: rgb(var(--color-foreground));
}
.product-card__body {
  padding: 14px 2px 0;
}
.product-card__type {
  margin: 0 0 5px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgb(var(--color-muted));
}
.product-card__model {
  margin: -2px 0 8px;
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: rgb(var(--color-muted));
}
.product-card__model b {
  color: rgb(var(--color-foreground));
  font-weight: 700;
  letter-spacing: 0.08em;
}
.product-card__title {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  text-transform: none;
  letter-spacing: 0;
  min-height: 40px;
  margin: 0 0 8px;
  -webkit-line-clamp: 2;
}
.product-card__buy {
  margin-top: 12px;
}
.price {
  font-size: 16px;
  letter-spacing: -0.01em;
}
.save-tag {
  display: inline-block;
  margin-left: 6px;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(220, 38, 38, 0.1);
  color: rgb(var(--color-button));
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ------------------------------ 礼品贴片 -------------------------------- */
.tile {
  border-radius: var(--radius-card);
  min-height: 280px;
  padding: 20px;
}
.tile__label {
  font-size: 14px;
}

/* ------------------------------ 筛选 pills ------------------------------ */
.facet-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 8px;
}
.facet-bar__label {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgb(var(--color-muted));
  margin-right: 2px;
}
.pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid rgb(var(--color-line));
  background: #fff;
  font-size: 13px;
  font-weight: 600;
  color: rgb(var(--color-foreground));
  transition: all 0.2s var(--ease);
}
.pill:hover {
  border-color: rgb(var(--color-foreground));
}
.pill.is-active {
  background: rgb(var(--color-foreground));
  border-color: rgb(var(--color-foreground));
  color: #fff;
}

/* ------------------------------ 集合页 ---------------------------------- */
.collection-layout {
  grid-template-columns: 1fr;
  gap: 0;
}
.collection-bar {
  padding: 14px 0 18px;
  border-bottom: 1px solid rgb(var(--color-line));
  margin-bottom: 26px;
}
.collection-bar select {
  border-radius: var(--radius-btn);
  padding: 10px 14px;
}
.load-more-wrap {
  display: flex;
  justify-content: center;
  padding: 40px 0 10px;
}

/* ------------------------------ 空状态 ---------------------------------- */
.empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  border: 1px dashed rgb(var(--color-line));
  border-radius: var(--radius-card);
  color: rgb(var(--color-muted));
}
.empty h3 {
  color: rgb(var(--color-foreground));
  font-size: 17px;
}
.empty a {
  color: rgb(var(--color-button));
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ------------------------------ 详情页 ---------------------------------- */
.product-detail {
  gap: 56px;
  padding-top: 24px;
}
.gallery__main {
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-1);
}
.gallery__thumbs button {
  border-radius: 10px;
}
.gallery__thumbs button.is-active {
  box-shadow: var(--ring);
}
.product-detail h1 {
  font-size: 30px;
  line-height: 1.25;
  letter-spacing: 0.02em;
  margin: 6px 0 10px;
}
.product-model {
  margin: -4px 0 14px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgb(var(--color-muted));
}
.product-model b {
  color: rgb(var(--color-foreground));
  font-weight: 700;
  letter-spacing: 0.14em;
}

/* 规格表（含型号），采购可直接复制 */
.spec-list {
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: 520px;
  border: 1px solid rgb(var(--color-line));
  border-radius: 10px;
  overflow: hidden;
}
.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 14px;
  font-size: 13px;
  border-bottom: 1px solid rgb(var(--color-line));
}
.spec-list li:last-child {
  border-bottom: 0;
}
.spec-list li:nth-child(odd) {
  background: rgb(var(--color-soft));
}
.spec-list span {
  color: rgb(var(--color-muted));
  letter-spacing: 0.06em;
}
.spec-list b {
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-align: right;
}

.product-detail__price {
  font-size: 27px;
  margin: 0 0 14px;
}
.product-detail__desc {
  color: rgb(var(--color-muted));
  font-size: 14.5px;
  max-width: 640px;
}
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 12px;
}
.checkout-note {
  font-size: 12.5px;
  color: rgb(var(--color-muted));
  margin: 0 0 24px;
  padding-left: 12px;
  border-left: 2px solid rgb(var(--color-line));
}
.reassure {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  padding: 18px 0;
  margin: 22px 0 0;
  border-top: 1px solid rgb(var(--color-line));
  border-bottom: 1px solid rgb(var(--color-line));
}
.reassure li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
}
.reassure svg {
  width: 18px;
  height: 18px;
  color: rgb(var(--color-button));
}
.feature-list li::before {
  border-radius: 2px;
}
.accordion summary {
  font-size: 12.5px;
}
.accordion summary span {
  color: rgb(var(--color-muted));
  font-size: 16px;
}
.accordion .acc-body {
  max-width: 640px;
}

/* ------------------------------ 搜索面板 -------------------------------- */
.search-meta {
  font-size: 12.5px;
  color: rgb(var(--color-muted));
  margin-top: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.search-results {
  margin-top: 18px;
}

/* ------------------------------ 移动导航 -------------------------------- */
.mobile-nav__top {
  display: block;
  padding: 14px 0;
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-bottom: 1px solid rgb(var(--color-line));
}

/* ------------------------------ 区块节奏 -------------------------------- */
.section {
  padding: 72px 0;
}
.section__title {
  font-size: 28px;
}
.join h2 {
  font-size: 32px;
}
.site-footer {
  padding-top: 60px;
}

/* ------------------------------ 响应式 ---------------------------------- */
@media (max-width: 1100px) {
  .trust-strip .container {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }
}

@media (max-width: 780px) {
  .section {
    padding: 48px 0;
  }
  .product-detail {
    gap: 30px;
  }
  .product-detail h1 {
    font-size: 24px;
  }
  .product-detail__price {
    font-size: 23px;
  }
  .cta-row .btn {
    flex: 1 1 auto;
    justify-content: center;
  }
  /* 移动端商品卡：购买按钮常显，无需悬停 */
  .product-card__buy {
    margin-top: 10px;
  }
  .slide__title {
    font-size: 30px;
  }
  .trust-strip .container {
    padding-top: 20px;
    padding-bottom: 20px;
  }
}

@media (max-width: 520px) {
  .trust-strip .container {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .facet-bar {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }
  .pill {
    white-space: nowrap;
  }
}