/**
 * 级伴益生菌 AI 官网 - 产品页专属样式
 */

.qb-product-page {
  background: var(--qianban-color-bg);
}

/* ==================== 产品概览 ==================== */
.qb-product-overview {
  padding: var(--qianban-space-xl) 0;
  background: #fff;
}

.qb-product-overview__inner {
  display: flex;
  flex-direction: column;
  gap: var(--qianban-space-xl);
}

@media (min-width: 768px) {
  .qb-product-overview__inner {
    flex-direction: row;
    align-items: flex-start;
  }

  .qb-gallery { flex: 0 0 45%; }
  .qb-product-info { flex: 1; }
}

/* ==================== 图片轮播 ==================== */
.qb-gallery {
  position: sticky;
  top: 80px;
}

.qb-gallery__main {
  position: relative;
  border-radius: var(--qianban-radius-lg);
  overflow: hidden;
  box-shadow: var(--qianban-shadow-md);
  background: #fff;
  aspect-ratio: 1;
}

.qb-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.3s ease;
}

.qb-gallery__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--qianban-color-text);
  font-size: 16px;
  border: none;
  cursor: pointer;
  transition: var(--qianban-transition-fast);
  box-shadow: var(--qianban-shadow-sm);
  z-index: 1;
}

.qb-gallery__nav:hover {
  background: var(--qianban-color-primary);
  color: #fff;
}

.qb-gallery__nav--prev { left: var(--qianban-space-sm); }
.qb-gallery__nav--next { right: var(--qianban-space-sm); }

.qb-gallery__thumbs {
  display: flex;
  gap: var(--qianban-space-sm);
  margin-top: var(--qianban-space-sm);
  overflow-x: auto;
  padding: var(--qianban-space-xs);
}

.qb-gallery__thumb {
  flex: 0 0 60px;
  height: 60px;
  border-radius: var(--qianban-radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--qianban-transition-fast);
  background: #fff;
}

.qb-gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.qb-gallery__thumb:hover {
  border-color: var(--qianban-color-primary-light);
}

.qb-gallery__thumb.qb-active {
  border-color: var(--qianban-color-primary);
}

/* ==================== 产品信息 ==================== */
.qb-product-info__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--qianban-space-sm);
  margin-bottom: var(--qianban-space-md);
}

.qb-product-info__title {
  font-size: var(--qianban-font-h2);
  color: var(--qianban-color-text);
  margin-bottom: var(--qianban-space-sm);
  line-height: 1.3;
}

.qb-product-info__subtitle {
  font-size: var(--qianban-font-small);
  color: var(--qianban-color-text-secondary);
  margin-bottom: var(--qianban-space-md);
}

.qb-product-info__price-box {
  display: flex;
  align-items: center;
  gap: var(--qianban-space-md);
  flex-wrap: wrap;
  padding: var(--qianban-space-md);
  background: var(--qianban-color-bg);
  border-radius: var(--qianban-radius-md);
  margin-bottom: var(--qianban-space-md);
}

.qb-product-info__specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--qianban-space-sm);
  margin-bottom: var(--qianban-space-md);
}

@media (min-width: 480px) {
  .qb-product-info__specs {
    grid-template-columns: repeat(4, 1fr);
  }
}

.qb-spec-item {
  text-align: center;
  padding: var(--qianban-space-sm);
  background: var(--qianban-color-bg);
  border-radius: var(--qianban-radius-sm);
}

.qb-spec-item__label {
  display: block;
  font-size: var(--qianban-font-tiny);
  color: var(--qianban-color-text-secondary);
  margin-bottom: 4px;
}

.qb-spec-item__value {
  display: block;
  font-size: var(--qianban-font-small);
  font-weight: 600;
  color: var(--qianban-color-text);
}

/* ==================== 套餐选择 ==================== */
.qb-package-select {
  margin-bottom: var(--qianban-space-md);
}

.qb-package-select__label {
  font-size: var(--qianban-font-small);
  font-weight: 600;
  color: var(--qianban-color-text);
  margin-bottom: var(--qianban-space-sm);
}

.qb-package-select__options {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--qianban-space-sm);
}

@media (min-width: 480px) {
  .qb-package-select__options {
    grid-template-columns: repeat(3, 1fr);
  }
}

.qb-package-option {
  padding: var(--qianban-space-md);
  border: 2px solid #E8E8E8;
  border-radius: var(--qianban-radius-md);
  cursor: pointer;
  transition: var(--qianban-transition-fast);
  text-align: center;
  position: relative;
}

.qb-package-option:hover {
  border-color: var(--qianban-color-primary-light);
}

.qb-package-option.qb-selected {
  border-color: var(--qianban-color-primary);
  background: rgba(232,76,136,0.05);
}

.qb-package-option__name {
  font-size: var(--qianban-font-small);
  font-weight: 600;
  color: var(--qianban-color-text);
  margin-bottom: 4px;
}

.qb-package-option__price {
  font-size: var(--qianban-font-h3);
  font-weight: 700;
  color: var(--qianban-color-primary);
}

.qb-package-option__price::before {
  content: '¥';
  font-size: 14px;
}

.qb-package-option__badge {
  position: absolute;
  top: -8px;
  right: var(--qianban-space-sm);
  font-size: var(--qianban-font-tiny);
  padding: 2px 8px;
  border-radius: var(--qianban-radius-full);
  background: var(--qianban-gradient-gold);
  color: #fff;
  font-weight: 600;
}

/* ==================== 优惠券输入 ==================== */
.qb-coupon-input {
  display: flex;
  gap: var(--qianban-space-sm);
  margin-bottom: var(--qianban-space-md);
}

.qb-coupon-input .qianban-form-input {
  flex: 1;
}

/* ==================== 购买按钮 ==================== */
.qb-buy-actions {
  display: flex;
  flex-direction: column;
  gap: var(--qianban-space-sm);
  margin-bottom: var(--qianban-space-md);
}

/* ==================== 保障 ==================== */
.qb-guarantees {
  display: flex;
  justify-content: space-around;
  gap: var(--qianban-space-sm);
  padding: var(--qianban-space-md);
  background: var(--qianban-color-bg);
  border-radius: var(--qianban-radius-md);
}

.qb-guarantee {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-size: var(--qianban-font-tiny);
  color: var(--qianban-color-text-secondary);
}

.qb-guarantee i {
  font-size: 20px;
  color: var(--qianban-color-success);
}

/* ==================== 套餐对比卡片 ==================== */
.qb-packages-section {
  background: #fff;
}

.qb-package-card {
  position: relative;
  padding: var(--qianban-space-xl);
  text-align: center;
  transition: var(--qianban-transition);
  overflow: visible;
}

.qb-package-card--highlight {
  border: 2px solid var(--qianban-color-primary);
  transform: scale(1.02);
  box-shadow: var(--qianban-shadow-lg);
}

.qb-package-card__ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--qianban-gradient-primary);
  color: #fff;
  font-size: var(--qianban-font-tiny);
  font-weight: 600;
  padding: 4px 16px;
  border-radius: var(--qianban-radius-full);
  white-space: nowrap;
  box-shadow: var(--qianban-shadow-sm);
}

.qb-package-card__name {
  font-size: var(--qianban-font-h3);
  font-weight: 700;
  color: var(--qianban-color-text);
  margin-bottom: var(--qianban-space-sm);
}

.qb-package-card__boxes {
  font-size: var(--qianban-font-small);
  color: var(--qianban-color-gold);
  font-weight: 600;
  margin-bottom: var(--qianban-space-md);
}

.qb-package-card__price {
  margin-bottom: var(--qianban-space-md);
}

.qb-package-card__price-current {
  font-size: 36px;
  font-weight: 800;
  color: var(--qianban-color-primary);
}

.qb-package-card__price-current::before {
  content: '¥';
  font-size: 18px;
}

.qb-package-card__price-original {
  display: block;
  font-size: var(--qianban-font-small);
  color: var(--qianban-color-text-light);
  text-decoration: line-through;
}

.qb-package-card__features {
  text-align: left;
  margin-bottom: var(--qianban-space-lg);
  padding: var(--qianban-space-md) 0;
  border-top: 1px solid rgba(0,0,0,0.05);
}

.qb-package-card__feature {
  display: flex;
  align-items: flex-start;
  gap: var(--qianban-space-sm);
  font-size: var(--qianban-font-small);
  color: var(--qianban-color-text);
  margin-bottom: var(--qianban-space-sm);
}

.qb-package-card__feature i {
  color: var(--qianban-color-success);
  margin-top: 3px;
  flex-shrink: 0;
}

.qb-package-card__feature--disabled {
  opacity: 0.4;
}

.qb-package-card__feature--disabled i {
  color: var(--qianban-color-text-light);
}

/* ==================== 资质认证 ==================== */
.qb-cert-section {
  background: var(--qianban-color-bg);
}

.qb-cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--qianban-space-md);
  margin-top: var(--qianban-space-lg);
}

@media (min-width: 768px) {
  .qb-cert-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.qb-cert-item {
  display: flex;
  align-items: center;
  gap: var(--qianban-space-sm);
  padding: var(--qianban-space-md);
  background: #fff;
  border-radius: var(--qianban-radius-md);
  box-shadow: var(--qianban-shadow-sm);
}

.qb-cert-item__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--qianban-radius-sm);
  background: var(--qianban-gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  flex-shrink: 0;
}

.qb-cert-item__title {
  font-size: var(--qianban-font-small);
  font-weight: 600;
  color: var(--qianban-color-text);
}

.qb-cert-item__desc {
  font-size: var(--qianban-font-tiny);
  color: var(--qianban-color-text-secondary);
}

/* ==================== 详情长图 ==================== */
.qb-detail-section {
  padding: var(--qianban-space-2xl) 0;
  background: #fff;
}

.qb-detail-image-wrapper {
  border-radius: var(--qianban-radius-lg);
  overflow: hidden;
  box-shadow: var(--qianban-shadow-md);
}

.qb-detail-image {
  width: 100%;
  display: block;
}

/* ==================== 购买弹窗二维码占位 ==================== */
.qb-qr-placeholder {
  width: 200px;
  height: 200px;
  margin: 0 auto var(--qianban-space-md);
  border-radius: var(--qianban-radius-md);
  background: var(--qianban-color-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--qianban-space-sm);
  color: var(--qianban-color-text-secondary);
}

.qb-qr-placeholder i {
  font-size: 64px;
  color: var(--qianban-color-success);
}

.qb-qr-placeholder p {
  font-size: var(--qianban-font-small);
}
/* 套餐卡片赠品 */
.qb-package-card__gift {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 8px 0 12px;
  padding: 8px 12px;
  background: linear-gradient(135deg, rgba(232,146,180,0.08), rgba(201,169,110,0.08));
  border: 1px dashed rgba(201,169,110,0.4);
  border-radius: 8px;
  font-size: 13px;
  color: #C9A96E;
  font-weight: 600;
}
.qb-package-card__gift i {
  color: #E892B4;
}

/* 顶部套餐选择按钮赠品提示 */
.qb-package-option__gift {
  font-size: 11px;
  color: #C9A96E;
  margin-top: 2px;
  font-weight: 600;
}