.container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: linear-gradient(135deg, #F9FAFB 0%, #F2F4F8 100%);
  font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
}

.header {
  background: #FFFFFF;
  box-shadow: 0 2rpx 8rpx rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24rpx 32rpx;
  width: 100%;
  box-sizing: border-box;
  height: 100rpx;
}

.back-button {
  width: 100rpx;
  height: 60rpx;
  line-height: 60rpx;
  font-size: 26rpx;
  color: #4a90e2;
  background: transparent;
  border: none;
  padding: 0;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  border-radius: 8rpx;
  transition: all 0.3s ease;
}

.back-button:hover {
  color: #3b82f6;
  background: rgba(74, 144, 226, 0.1);
  transform: translateX(-2rpx);
}

.back-icon {
  margin-right: 8rpx;
  font-size: 22rpx;
  font-weight: 600;
}

.back-text {
  font-size: 26rpx;
  font-weight: 500;
}

.title {
  font-size: 36rpx;
  font-weight: 700;
  color: #2c3e50;
  letter-spacing: 2rpx;
  flex: 1;
  text-align: center;
  margin: 0;
  padding: 0;
}

.header-right {
  width: 100rpx;
}

.content {
  flex: 1;
  padding: 32rpx;
  display: flex;
  flex-direction: column;
  width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
}

/* 加载状态 */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.9);
  z-index: 9999;
  width: 100%;
  box-sizing: border-box;
}

.loading-spinner {
  width: 80rpx;
  height: 80rpx;
  border: 8rpx solid rgba(74, 144, 226, 0.2);
  border-top: 8rpx solid #4a90e2;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 32rpx;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-text {
  font-size: 28rpx;
  color: #666;
  font-weight: 500;
}

/* 错误提示卡片 */
.error-card {
  background: #fff;
  border-radius: 16rpx;
  padding: 48rpx;
  margin: 32rpx 0;
  box-shadow: 0 4rpx 20rpx rgba(0,0,0,0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.error-icon {
  font-size: 80rpx;
  margin-bottom: 24rpx;
}

.error-text {
  font-size: 28rpx;
  color: #e74c3c;
  margin-bottom: 32rpx;
  line-height: 1.5;
}

/* 按钮样式 */
.button-group {
  display: flex;
  gap: 16rpx;
  width: 100%;
}

.btn-primary {
  flex: 1;
  height: 80rpx;
  line-height: 80rpx;
  font-size: 32rpx;
  font-weight: 600;
  border-radius: 40rpx;
  background: linear-gradient(135deg, #007AFF 0%, #0051D5 100%);
  color: #fff;
  border: none;
  box-shadow: 0 4rpx 8rpx rgba(0,122,255,0.2);
  transition: all 0.3s ease;
  padding: 0 48rpx;
}

.btn-primary:hover {
  transform: translateY(-2rpx);
  box-shadow: 0 6rpx 16rpx rgba(0,122,255,0.3);
}

.btn-secondary {
  flex: 1;
  height: 80rpx;
  line-height: 80rpx;
  font-size: 32rpx;
  font-weight: 600;
  border-radius: 40rpx;
  background: #fff;
  color: #007AFF;
  border: 1rpx solid #007AFF;
  transition: all 0.3s ease;
  padding: 0 48rpx;
}

.btn-secondary:hover {
  background: rgba(0,122,255,0.05);
  transform: translateY(-2rpx);
}

.btn-change-product {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12rpx 24rpx;
  font-size: 28rpx;
  color: #007AFF;
  background: transparent;
  border: 1rpx solid #007AFF;
  border-radius: 20rpx;
  transition: all 0.3s ease;
  box-shadow: 0 2rpx 8rpx rgba(0,0,0,0.05);
}

.btn-change-product:hover {
  background: rgba(0,122,255,0.1);
  transform: translateY(-2rpx);
  box-shadow: 0 4rpx 12rpx rgba(0,122,255,0.2);
}

.btn-change-product-text {
  font-size: 28rpx;
}

/* 商品信息卡片 */
.product-card {
  background: #FFFFFF;
  border-radius: 12rpx;
  padding: 32rpx;
  margin: 24rpx 0 32rpx;
  width: 100%;
  box-shadow: 0 4rpx 12rpx rgba(0,0,0,0.04);
  transition: all 0.3s ease;
}

.product-info-container {
  width: 100%;
  box-sizing: border-box;
}

.product-info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  box-sizing: border-box;
}

.product-name-container {
  display: flex;
  align-items: center;
  flex: 1;
  margin-right: 16rpx;
}

.product-name {
  font-size: 32rpx;
  font-weight: 600;
  color: #333;
  line-height: 1.4;
  word-break: break-word;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 规格列表区域 */
.spec-section {
  margin-top: 32rpx;
  width: 100%;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24rpx;
  padding: 0;
  width: 100%;
}

.section-title {
  font-size: 32rpx;
  font-weight: 600;
  color: #333;
  padding-left: 16rpx;
  border-left: 6rpx solid #007AFF;
  border-radius: 4rpx;
  line-height: 32rpx;
}

.section-count {
  font-size: 28rpx;
  color: #999;
}

/* 规格列表布局 */
.spec-list {
  margin-top: 16rpx;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16rpx;
  width: 100%;
}

/* 规格项 */
.spec-item {
  background: #FFFFFF;
  border-radius: 12rpx;
  padding: 32rpx 24rpx;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  box-shadow: 0 2rpx 8rpx rgba(0,0,0,0.02);
  transition: all 0.3s ease;
}

.spec-item:hover {
  box-shadow: 0 4rpx 12rpx rgba(0,0,0,0.05);
  transform: translateY(-2rpx);
}

.spec-item:active {
  background: #F5F5F5;
}

.spec-name {
  font-size: 30rpx;
  font-weight: 500;
  color: #333;
  line-height: 1.4;
  word-break: break-word;
  text-align: center;
  padding: 0 8rpx;
}

/* 空状态 */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120rpx 0;
  text-align: center;
  width: 100%;
}

.empty-icon {
  font-size: 120rpx;
  margin-bottom: 40rpx;
  opacity: 0.6;
  color: #CCC;
}

.empty-text {
  font-size: 32rpx;
  font-weight: 600;
  color: #333;
  margin-bottom: 16rpx;
  line-height: 1.4;
  padding: 0 40rpx;
}

.empty-subtext {
  font-size: 28rpx;
  color: #999;
  margin-bottom: 48rpx;
  line-height: 1.4;
  padding: 0 40rpx;
}

/* 响应式设计 */
@media (max-width: 750rpx) {
  .content {
    padding: 24rpx;
  }
  
  .product-card {
    padding: 28rpx;
  }
  
  .title {
    font-size: 32rpx;
  }
  
  .section-title {
    font-size: 28rpx;
  }
  
  .product-name {
    font-size: 28rpx;
  }
  
  .button-group {
    flex-direction: column;
    gap: 12rpx;
  }
  
  .btn-primary,
  .btn-secondary {
    width: 100%;
  }
  
  .spec-item {
    padding: 28rpx 20rpx;
  }
  
  .spec-name {
    font-size: 28rpx;
  }
  
  .spec-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 16rpx;
  }
}

/* 小屏幕设备适配 */
@media (max-width: 414rpx) {
  .content {
    padding: 24rpx;
  }
  
  .title {
    font-size: 32rpx;
  }
  
  .section-title {
    font-size: 28rpx;
  }
  
  .product-name {
    font-size: 26rpx;
  }
  
  .spec-item {
    padding: 24rpx 16rpx;
  }
  
  .spec-name {
    font-size: 24rpx;
  }
  
  .btn-change-product {
    padding: 10rpx 20rpx;
  }
  
  .btn-change-product-text {
    font-size: 26rpx;
  }
  
  .spec-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 12rpx;
  }
}

/* 暂无更多规格提示 */
.no-more {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48rpx 0;
  margin-top: 32rpx;
  margin-bottom: 40rpx;
  width: 100%;
}

.no-more::before,
.no-more::after {
  content: '';
  flex: 1;
  height: 1rpx;
  background: #E5E5E5;
  margin: 0 16rpx;
}

.no-more-text {
  font-size: 24rpx;
  color: #BBB;
  font-weight: 500;
  white-space: nowrap;
}