/* ============================================================
   退货码网页版 - 全局样式与动效 (v2)
   视觉升级：玻璃态卡片 + 渐变背景 + 精致排版
   布局：rem + vw 混合，联系方式底部固定悬停
   适配：320px - 428px 移动端全适配 + 暗色模式
   ============================================================ */

/* ===== CSS 变量主题系统 ===== */
:root {
  --color-primary: #FF6B35;
  --color-primary-dark: #E85D26;
  --color-primary-light: #FF8F62;
  --color-primary-glow: rgba(255, 107, 53, 0.4);
  --color-accent: #FFB74D;
  --color-bg-deep: #0F1525;
  --color-bg-mid: #1A2540;
  --color-card: rgba(25, 36, 64, 0.85);
  --color-card-border: rgba(255, 255, 255, 0.08);
  --color-text: #EDF0F7;
  --color-text-secondary: #94A3B8;
  --color-text-muted: #64748B;
  --color-success: #34D399;
  --color-overlay: rgba(0, 0, 0, 0.94);
  --color-toast-bg: rgba(15, 21, 37, 0.95);
  --radius-sm: 0.5rem;
  --radius-card: 1rem;
  --radius-xl: 1.25rem;
  --radius-btn: 1.5rem;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 0.75rem;
  --spacing-lg: 1rem;
  --spacing-xl: 1.25rem;
  --spacing-2xl: 1.5rem;
  --spacing-3xl: 2rem;
  --font-size-xs: 0.6875rem;
  --font-size-sm: 0.8125rem;
  --font-size-md: 0.9375rem;
  --font-size-lg: 1.0625rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.625rem;
  --font-size-3xl: 2rem;
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== 全局重置 ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", sans-serif;
  color: var(--color-text);
  background: var(--color-bg-deep);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* ===== Canvas 背景粒子动画层 ===== */
#bgCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  background-color: #0F1525;
}

/* ===== 页面容器 ===== */
.page {
  position: relative;
  z-index: 1;
  max-width: 26.75rem;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  animation: pageFadeIn 0.6s ease both;
}

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(0.75rem); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 页面头部 ===== */
.page-header {
  text-align: center;
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  position: relative;
}

/* 小标签徽章 */
.header-badge {
  display: inline-block;
  padding: 0.25rem 0.875rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--color-primary-light);
  background: rgba(255, 107, 53, 0.12);
  border: 1px solid rgba(255, 107, 53, 0.25);
  border-radius: 2rem;
  margin-bottom: var(--spacing-lg);
  text-transform: uppercase;
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  letter-spacing: 0.04em;
  max-width: 18rem;
  margin: 0 auto;
  line-height: 1.6;
}

/* ===== 加载中状态 ===== */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 0;
  flex: 1;
}

/* 双层旋转圆环加载器 */
.loading-ring {
  position: relative;
  width: 3rem;
  height: 3rem;
}

.loading-ring::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid rgba(255, 107, 53, 0.15);
  border-top-color: var(--color-primary);
  animation: spin 0.8s linear infinite;
}

.loading-ring::after {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  border: 2px solid rgba(255, 183, 77, 0.15);
  border-bottom-color: var(--color-accent);
  animation: spin 1.2s linear infinite reverse;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  margin-top: var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* ===== 错误状态 ===== */
.error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 0;
  flex: 1;
  text-align: center;
}

.error-illustration {
  width: 5rem;
  height: 5rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-xl);
  opacity: 0.6;
}

.error-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.error-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
}

.btn-retry {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.75rem 2rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #FFFFFF;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  box-shadow: 0 4px 16px var(--color-primary-glow);
}

.btn-retry:active {
  transform: scale(0.96);
  box-shadow: 0 2px 8px var(--color-primary-glow);
}

/* ===== 商品列表 ===== */
.product-list {
  flex: 1;
  padding-bottom: 5.5rem;
}

/* ===== 商品卡片：玻璃态设计 ===== */
.product-card {
  background: var(--color-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-card-border);
  margin-bottom: var(--spacing-lg);
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.3),
    0 1px 2px rgba(255, 255, 255, 0.04) inset;
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease,
    box-shadow 0.3s ease,
    border-color 0.3s ease;
}

.product-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.product-card:hover,
.product-card:active {
  border-color: rgba(255, 107, 53, 0.3);
  box-shadow:
    0 8px 32px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(255, 107, 53, 0.1) inset;
}

/* 商品序号角标 */
.product-image-wrap {
  position: relative;
  width: 100%;
  padding-bottom: 75%;
  overflow: hidden;
  background: linear-gradient(135deg, #1A2540, #253352);
  cursor: pointer;
}

.product-image-wrap::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 60%,
    rgba(15, 21, 37, 0.4)
  );
  z-index: 1;
  pointer-events: none;
}

.product-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-image-wrap:active .product-image {
  transform: scale(1.05);
}

/* 放大提示图标 */
.product-image-wrap::before {
  content: "";
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  z-index: 2;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transform: scale(0.8);
  transition: all var(--transition-normal);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3Cline x1='11' y1='8' x2='11' y2='14'/%3E%3Cline x1='8' y1='11' x2='14' y2='11'/%3E%3C/svg%3E") center/60% no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3Cline x1='11' y1='8' x2='11' y2='14'/%3E%3Cline x1='8' y1='11' x2='14' y2='11'/%3E%3C/svg%3E") center/60% no-repeat;
}

.product-image-wrap:active::before {
  opacity: 1;
  transform: scale(1);
}

/* 图片加载失败占位 */
.product-image-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1A2540, #202D4A);
  color: var(--color-text-muted);
  z-index: 1;
}

.product-image-placeholder svg {
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: var(--spacing-sm);
  opacity: 0.4;
}

.placeholder-text {
  font-size: var(--font-size-xs);
  opacity: 0.5;
}

/* ===== 商品信息区域 ===== */
.product-info {
  padding: var(--spacing-xl);
}

.product-name {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.55;
  margin-bottom: var(--spacing-lg);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== 退货码区域 ===== */
.return-code-section {
  display: flex;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.08), rgba(255, 183, 77, 0.05));
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 107, 53, 0.12);
  gap: var(--spacing-md);
  flex-wrap: wrap;
  position: relative;
  overflow: hidden;
}

/* 退货码区域微光扫过动画 */
.return-code-section::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.04), transparent);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { left: -100%; }
  50% { left: 140%; }
}

.return-code-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  flex-shrink: 0;
}

/* 退货码 */
.return-code-value {
  flex: 1;
  min-width: 0;
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary-light);
  letter-spacing: 0.05em;
  font-family: "SF Mono", "Menlo", "Monaco", "Consolas", monospace;
  animation: codeGlow 2s ease-in-out infinite;
  text-shadow: 0 0 12px var(--color-primary-glow);
  word-break: break-all;
}

@keyframes codeGlow {
  0%, 100% {
    text-shadow: 0 0 8px var(--color-primary-glow);
  }
  50% {
    text-shadow: 0 0 24px rgba(255, 107, 53, 0.6), 0 0 40px rgba(255, 107, 53, 0.2);
  }
}

/* 复制按钮 */
.btn-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4375rem 0.875rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(255, 107, 53, 0.1);
  border: 1px solid rgba(255, 107, 53, 0.25);
  border-radius: var(--radius-btn);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all var(--transition-fast);
  user-select: none;
}

.btn-copy:active {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
  transform: scale(0.95);
  box-shadow: 0 0 16px var(--color-primary-glow);
}

.btn-copy.copied {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #FFFFFF;
}

.btn-copy::before {
  content: "";
  display: inline-block;
  width: 0.8125rem;
  height: 0.8125rem;
  background: currentColor;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='9' y='9' width='13' height='13' rx='2' ry='2'/%3E%3Cpath d='M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1'/%3E%3C/svg%3E") center / contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='9' y='9' width='13' height='13' rx='2' ry='2'/%3E%3Cpath d='M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1'/%3E%3C/svg%3E") center / contain no-repeat;
  transition: transform var(--transition-fast);
}

.btn-copy.copied::before {
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") center / contain no-repeat;
}

/* ===== 底部备案号（始终展示） ===== */
.site-footer {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 26.75rem;
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-lg) calc(var(--spacing-md) + env(safe-area-inset-bottom));
  background: rgba(15, 21, 37, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.4);
  animation: footerSlideUp 0.5s ease both;
}

@keyframes footerSlideUp {
  from {
    transform: translateX(-50%) translateY(100%);
  }
  to {
    transform: translateX(-50%) translateY(0);
  }
}

.site-records {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  text-align: center;
}

.record-item {
  font-size: 0.625rem;
  line-height: 1.4;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-decoration: none;
  opacity: 0.7;
  transition: opacity var(--transition-fast), color var(--transition-fast);
}

.record-item:hover,
.record-item:active {
  opacity: 1;
  color: var(--color-text-secondary);
}

/* ===== Toast 轻提示 ===== */
.toast {
  position: fixed;
  bottom: 6rem;
  left: 50%;
  transform: translateX(-50%) translateY(1rem);
  padding: 0.6875rem 1.5rem;
  background: var(--color-toast-bg);
  color: #FFFFFF;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-btn);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 9999;
  white-space: nowrap;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ===== 图片全屏预览遮罩层 ===== */
.image-preview-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-overlay);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
  touch-action: pinch-zoom;
  gap: var(--spacing-2xl);
}

.image-preview-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.image-preview-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 95%;
  max-height: 75%;
  transform: scale(0.85);
  transition: transform 0.35s ease;
}

.image-preview-overlay.active .image-preview-wrapper {
  transform: scale(1);
}

.image-preview-content {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 0.5rem;
  user-select: none;
  -webkit-user-drag: none;
  box-shadow: 0 16px 64px rgba(0, 0, 0, 0.6);
}

/* 关闭按钮 */
.image-preview-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #FFFFFF;
  font-size: 1.5rem;
  line-height: 1;
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.image-preview-close:active {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(0.92);
}

/* 关闭提示文字 */
.image-preview-hint {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.06em;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.image-preview-overlay.active .image-preview-hint {
  opacity: 1;
  transition-delay: 0.3s;
}

/* ===== 响应式适配 ===== */
@media screen and (max-width: 23.375rem) {
  .page-title { font-size: 1.75rem; }
  .return-code-value { font-size: var(--font-size-md); }
}

@media screen and (min-width: 26.75rem) {
  body {
    background: #0A0F1E;
  }

  .page {
    box-shadow: 0 0 60px rgba(0, 0, 0, 0.5);
  }
}

/* ===== 暗色模式细化（当前已是暗色调，略作调整） ===== */
@media (prefers-color-scheme: light) {
  :root {
    --color-bg-deep: #F0F2F8;
    --color-bg-mid: #E8ECF2;
    --color-card: rgba(255, 255, 255, 0.9);
    --color-card-border: rgba(0, 0, 0, 0.06);
    --color-text: #1A2235;
    --color-text-secondary: #5A6780;
    --color-text-muted: #94A0B8;
    --color-overlay: rgba(255, 255, 255, 0.98);
    --color-toast-bg: rgba(26, 34, 53, 0.95);
  }

  .product-card {
    box-shadow:
      0 4px 24px rgba(0, 0, 0, 0.06),
      0 1px 2px rgba(0, 0, 0, 0.02) inset;
  }

  .product-image-wrap {
    background: linear-gradient(135deg, #E8ECF2, #F0F2F8);
  }

  .return-code-section {
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.06), rgba(255, 183, 77, 0.03));
  }

  .site-footer {
    background: rgba(255, 255, 255, 0.92);
    border-top-color: rgba(0, 0, 0, 0.06);
    box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.08);
  }

  .btn-copy {
    background: rgba(255, 107, 53, 0.06);
    border-color: rgba(255, 107, 53, 0.2);
  }

  .return-code-value {
    text-shadow: none;
  }
}

/* ============================================================
   新增：提示态 / 元信息 / 状态徽章 / 退货码图片 / 分页栏 / 空态
   ============================================================ */

/* ===== 未提供 familyId 提示态 ===== */
.notice-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 0;
  flex: 1;
  text-align: center;
}

.notice-illustration {
  width: 4.5rem;
  height: 4.5rem;
  color: var(--color-primary-light);
  opacity: 0.85;
  margin-bottom: var(--spacing-xl);
}

.notice-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.notice-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-2xl);
}

.notice-hint code {
  font-family: "SF Mono", "Menlo", "Monaco", "Consolas", monospace;
  font-size: var(--font-size-xs);
  color: var(--color-primary-light);
  background: rgba(255, 107, 53, 0.1);
  padding: 0.1rem 0.4rem;
  border-radius: 0.35rem;
}

.notice-form {
  display: flex;
  gap: var(--spacing-sm);
  width: 100%;
  max-width: 18rem;
}

.notice-input {
  flex: 1;
  min-width: 0;
  padding: 0.75rem 1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-btn);
  outline: none;
  transition: border-color var(--transition-fast);
}

.notice-input:focus {
  border-color: rgba(255, 107, 53, 0.4);
}

.notice-input::placeholder {
  color: var(--color-text-muted);
}

.notice-btn {
  flex-shrink: 0;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #FFFFFF;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border: none;
  border-radius: var(--radius-btn);
  cursor: pointer;
  box-shadow: 0 4px 16px var(--color-primary-glow);
  transition: transform var(--transition-fast);
}

.notice-btn:active {
  transform: scale(0.96);
}

/* ===== 元信息网格 ===== */
.product-meta {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 0.75rem;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
}

.meta-row {
  display: contents;
}

.meta-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  white-space: nowrap;
  align-self: center;
}

.meta-value {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-align: right;
  word-break: break-all;
  line-height: 1.5;
}

/* ===== 退货码图片 ===== */
.return-code-image-wrap {
  position: relative;
  margin-top: var(--spacing-md);
  padding: 0.75rem;
  background: linear-gradient(135deg, #1A2540, #253352);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
  transition: border-color var(--transition-fast);
}

.return-code-image-wrap:active {
  border-color: rgba(255, 107, 53, 0.3);
}

.return-code-image {
  max-width: 100%;
  max-height: 7rem;
  object-fit: contain;
  border-radius: 0.25rem;
}

.return-code-image-tip {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* ===== 备注 ===== */
.product-note {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-xs);
  line-height: 1.6;
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.02);
  border-left: 2px solid rgba(255, 107, 53, 0.3);
  border-radius: 0 0.25rem 0.25rem 0;
  word-break: break-all;
}

.note-label {
  color: var(--color-text-muted);
  margin-right: 0.375rem;
}

/* ===== 分页加载栏 ===== */
.load-more-bar {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg) 0 calc(var(--spacing-2xl) + 5rem);
}

.btn-load-more {
  padding: 0.75rem 2.5rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary-light);
  background: rgba(255, 107, 53, 0.08);
  border: 1px solid rgba(255, 107, 53, 0.25);
  border-radius: var(--radius-btn);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.btn-load-more:active:not(:disabled) {
  background: rgba(255, 107, 53, 0.16);
  transform: scale(0.97);
}

.btn-load-more:disabled {
  opacity: 0.6;
  cursor: default;
}

.load-more-count {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}

/* ===== 空状态 ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 0;
  flex: 1;
  text-align: center;
}

.empty-illustration {
  width: 5rem;
  height: 5rem;
  color: var(--color-text-muted);
  opacity: 0.5;
  margin-bottom: var(--spacing-xl);
}

.empty-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--spacing-xs);
}

.empty-hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ===== 暗色模式细化（新增元素） ===== */
@media (prefers-color-scheme: light) {
  .product-meta {
    background: rgba(0, 0, 0, 0.02);
  }

  .return-code-image-wrap {
    background: linear-gradient(135deg, #E8ECF2, #F0F2F8);
  }

  .product-note {
    background: rgba(0, 0, 0, 0.02);
  }
}