/* =========================================================
   Shopify Dawn风格现代商城 CSS
   设计参考：Shopify Dawn Theme
   主色：#118a7e (薄荷绿)
   深色：#2d3748
   白色：#ffffff
   ========================================================= */


/* ============================================
   1. CSS Reset / 基础样式
   ============================================ */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* 颜色变量 */
  --color-primary: #118a7e;
  --color-primary-hover: #0d7569;
  --color-primary-light: #e6f4f2;
  --color-dark: #2d3748;
  --color-gray-900: #1a202c;
  --color-gray-800: #2d3748;
  --color-gray-700: #4a5568;
  --color-gray-600: #718096;
  --color-gray-500: #a0aec0;
  --color-gray-400: #cbd5e0;
  --color-gray-300: #e2e8f0;
  --color-gray-200: #edf2f7;
  --color-gray-100: #f7fafc;
  --color-gray-50: #fafafa;
  --color-white: #ffffff;
  --color-black: #000000;
  --color-border: #e2e8f0;
  --color-success: #48bb78;
  --color-danger: #f56565;
  --color-warning: #ed8936;

  /* 字体 */
  --font-family: "Helvetica Neue", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;

  /* 排版 */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-md: 18px;
  --font-size-lg: 20px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 40px;
  --font-size-4xl: 56px;

  /* 间距 */
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;

  /* 头部高度 */
  --header-height: 70px;

  /* 最大宽度 */
  --container-max: 1280px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-dark);
  margin-bottom: var(--space-md);
}

h1 { font-size: var(--font-size-4xl); font-weight: 700; }
h2 { font-size: var(--font-size-3xl); font-weight: 700; }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

p {
  margin-bottom: var(--space-md);
  color: var(--color-gray-700);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button {
  font-family: inherit;
  font-size: var(--font-size-base);
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: var(--font-size-base);
  color: var(--color-dark);
}

input:focus,
textarea:focus,
select:focus,
button:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

ul, ol {
  list-style: none;
}


/* ============================================
   2. 通用工具类
   ============================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.container-sm {
  width: 100%;
  max-width: 768px;
  margin: 0 auto;
  padding-left: var(--space-lg);
  padding-right: var(--space-lg);
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--color-primary); }
.text-dark { color: var(--color-dark); }
.text-white { color: var(--color-white); }
.text-muted { color: var(--color-gray-600); }

.bg-primary { background-color: var(--color-primary); }
.bg-light { background-color: var(--color-gray-100); }
.bg-white { background-color: var(--color-white); }

.section {
  padding: var(--space-3xl) 0;
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--color-dark);
}

.section-subtitle {
  text-align: center;
  color: var(--color-gray-600);
  font-size: var(--font-size-md);
  margin-top: calc(-1 * var(--space-md));
  margin-bottom: var(--space-2xl);
}

/* 按钮基础 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 12px 28px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  line-height: 1.5;
  letter-spacing: 0.3px;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-lg {
  padding: 14px 36px;
  font-size: var(--font-size-base);
}

.btn-block {
  display: flex;
  width: 100%;
}

/* 主按钮 - 薄荷绿 */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

/* 次按钮 - 描边 */
.btn-secondary {
  background-color: transparent;
  color: var(--color-dark);
  border-color: var(--color-dark);
}

.btn-secondary:hover {
  background-color: var(--color-dark);
  color: var(--color-white);
}

/* 白色按钮 */
.btn-light {
  background-color: var(--color-white);
  color: var(--color-dark);
  border-color: var(--color-gray-300);
}

.btn-light:hover {
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-400);
}

.hidden-mobile {
  display: block;
}

.hidden-desktop {
  display: none;
}

.d-flex { display: flex; }
.d-grid { display: grid; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.w-full { width: 100%; }
.h-full { height: 100%; }

.rounded { border-radius: var(--radius-md); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow-md); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

.py-0 { padding-top: 0; padding-bottom: 0; }
.py-lg { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.px-lg { padding-left: var(--space-lg); padding-right: var(--space-lg); }

.cursor-pointer { cursor: pointer; }
.fw-bold { font-weight: 700; }
.fw-600 { font-weight: 600; }

.uppercase { text-transform: uppercase; }
.letter-spacing { letter-spacing: 1px; }

.line-through { text-decoration: line-through; color: var(--color-gray-500); }

/* 徽章 */
.badge {
  display: inline-block;
  padding: 2px 10px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

.badge-primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.badge-danger {
  background-color: var(--color-danger);
  color: var(--color-white);
}

.badge-outline {
  background: transparent;
  border: 1px solid var(--color-gray-400);
  color: var(--color-gray-700);
}

/* 表单 */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 10px 14px;
  font-size: var(--font-size-base);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-dark);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(17, 138, 126, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}


/* ============================================
   3. 公告栏 - 顶部细条
   ============================================ */

.announcement-bar {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: 8px 16px;
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: 400;
  letter-spacing: 0.5px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.announcement-bar p {
  margin: 0;
  color: var(--color-white);
  font-size: var(--font-size-sm);
}

.announcement-bar a {
  color: var(--color-white);
  text-decoration: underline;
  font-weight: 500;
}

.announcement-bar a:hover {
  opacity: 0.9;
}


/* ============================================
   4. 头部导航
   ============================================ */

.header-section {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  position: relative;
  z-index: 100;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: var(--space-lg);
}

/* Logo */
.header-logo {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.header-logo a {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-dark);
  letter-spacing: -0.5px;
  text-decoration: none;
}

.header-logo a:hover {
  color: var(--color-primary);
}

/* 中间导航 */
.header-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.header-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  list-style: none;
  margin: 0;
  padding: 0;
}

.header-nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
  text-decoration: none;
  padding: 8px 4px;
  position: relative;
  transition: color var(--transition-fast);
  letter-spacing: 0.3px;
}

.header-nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: all var(--transition-base);
  transform: translateX(-50%);
}

.header-nav-link:hover,
.header-nav-link.active {
  color: var(--color-primary);
}

.header-nav-link:hover::after,
.header-nav-link.active::after {
  width: 100%;
}

/* 右侧工具栏 */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-icon-btn {
  position: relative;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-dark);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.header-icon-btn:hover {
  background-color: var(--color-gray-100);
  color: var(--color-primary);
}

.header-icon-btn svg {
  width: 22px;
  height: 22px;
}

.cart-count {
  position: absolute;
  top: 4px;
  right: 2px;
  min-width: 18px;
  height: 18px;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: 11px;
  font-weight: 600;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 5px;
  line-height: 1;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  color: var(--color-dark);
}

.mobile-menu-btn svg {
  width: 26px;
  height: 26px;
}


/* ============================================
   5. 粘性头部效果
   ============================================ */

.header-section.is-sticky {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  box-shadow: var(--shadow-sm);
  animation: slideDown 0.3s ease;
}

.header-section.is-scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--color-gray-300);
}

@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}


/* ============================================
   6. Hero Banner
   ============================================ */

.hero-section {
  position: relative;
  width: 100%;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: var(--color-gray-100);
}

.hero-banner {
  position: relative;
  width: 100%;
  min-height: 600px;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
}

.hero-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.7) 0%, rgba(255,255,255,0.3) 50%, rgba(255,255,255,0) 100%);
}

.hero-container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-lg);
}

.hero-content {
  max-width: 560px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.1;
  margin-bottom: var(--space-lg);
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: var(--font-size-md);
  color: var(--color-gray-700);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* 简洁版 Hero - 居中文字 */
.hero-simple {
  min-height: 480px;
  text-align: center;
  background-color: var(--color-gray-50);
}

.hero-simple .hero-container {
  display: flex;
  justify-content: center;
}

.hero-simple .hero-content {
  text-align: center;
  max-width: 720px;
}

.hero-simple .hero-actions {
  justify-content: center;
}


/* ============================================
   7. 分类导航区
   ============================================ */

.category-nav {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--color-gray-200);
  background-color: var(--color-white);
}

.category-nav-list {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  list-style: none;
  margin: 0;
  padding: 0;
}

.category-nav-link {
  display: inline-block;
  padding: 8px 20px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
  text-decoration: none;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-full);
  background-color: var(--color-white);
  transition: all var(--transition-base);
  letter-spacing: 0.3px;
}

.category-nav-link:hover,
.category-nav-link.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}


/* ============================================
   8. 产品卡片
   ============================================ */

.product-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  position: relative;
}

.product-card:hover {
  transform: translateY(-4px);
}

/* 图片区域 */
.product-card-media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  background-color: var(--color-gray-100);
  border-radius: var(--radius-lg);
}

.product-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.product-card:hover .product-card-media img {
  transform: scale(1.05);
}

/* 第二张图 - hover切换 */
.product-card-media .secondary-img {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.product-card:hover .product-card-media .secondary-img {
  opacity: 1;
}

/* 产品徽章 */
.product-badges {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 2;
}

/* 收藏图标 */
.product-wishlist {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 38px;
  height: 38px;
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-600);
  opacity: 0;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  z-index: 2;
  box-shadow: var(--shadow-sm);
}

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

.product-wishlist:hover {
  color: var(--color-danger);
}

.product-wishlist svg {
  width: 18px;
  height: 18px;
}

/* Quick Add 按钮 */
.product-quick-add {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  padding: 12px 16px;
  background-color: var(--color-white);
  color: var(--color-dark);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition-base);
  text-align: center;
  z-index: 2;
  box-shadow: var(--shadow-md);
}

.product-card:hover .product-quick-add {
  opacity: 1;
  transform: translateY(0);
}

.product-quick-add:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* 产品信息 */
.product-card-info {
  padding: var(--space-md) var(--space-xs) var(--space-xs);
  text-align: center;
}

.product-card-title {
  font-size: var(--font-size-base);
  font-weight: 500;
  color: var(--color-dark);
  margin-bottom: 6px;
  line-height: 1.4;
  text-align: center;
}

.product-card-title a {
  color: var(--color-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.product-card-title a:hover {
  color: var(--color-primary);
}

.product-card-price {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
  text-align: center;
}

.product-card-price .price {
  color: var(--color-dark);
}

.product-card-price .old-price {
  color: var(--color-gray-500);
  text-decoration: line-through;
  font-weight: 400;
  margin-left: 6px;
  font-size: var(--font-size-sm);
}

/* 评分 */
.product-rating {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-bottom: 8px;
  color: var(--color-warning);
  font-size: var(--font-size-sm);
}

.product-rating .count {
  color: var(--color-gray-500);
  font-size: var(--font-size-xs);
  margin-left: 4px;
}


/* ============================================
   9. 产品网格
   ============================================ */

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl) var(--space-lg);
}

.product-grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.product-grid-2 {
  grid-template-columns: repeat(2, 1fr);
}


/* ============================================
   10. 特色产品区块
   ============================================ */

.featured-section {
  padding: var(--space-3xl) 0;
  background-color: var(--color-white);
}

.featured-section-light {
  background-color: var(--color-gray-50);
}

.featured-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.featured-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.featured-subtitle {
  color: var(--color-gray-600);
  font-size: var(--font-size-base);
  margin-bottom: 0;
}

.featured-more {
  text-align: center;
  margin-top: var(--space-2xl);
}


/* ============================================
   11. 分类卡片
   ============================================ */

.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.category-card {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background-color: var(--color-gray-100);
  aspect-ratio: 1 / 1;
  text-decoration: none;
  color: var(--color-dark);
}

.category-card-image {
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.category-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.category-card:hover .category-card-image img {
  transform: scale(1.08);
}

.category-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-xl) var(--space-lg) var(--space-lg);
  background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, transparent 100%);
  color: var(--color-white);
}

.category-card-name {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 4px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.category-card-link {
  font-size: var(--font-size-sm);
  color: var(--color-white);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 1px;
  text-transform: uppercase;
  opacity: 0.9;
  border-bottom: 1px solid var(--color-white);
  padding-bottom: 2px;
}

.category-card:hover .category-card-link {
  opacity: 1;
}


/* ============================================
   12. Marquee 滚动公告条
   ============================================ */

.marquee-bar {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding: var(--space-md) 0;
  overflow: hidden;
}

.marquee-track {
  display: flex;
  gap: var(--space-3xl);
  white-space: nowrap;
  animation: marquee 30s linear infinite;
}

.marquee-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-white);
}

.marquee-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

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


/* ============================================
   13. 产品详情页
   ============================================ */

.product-detail {
  padding: var(--space-2xl) 0 var(--space-3xl);
  background-color: var(--color-white);
}

.product-detail-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}


/* ============================================
   14. 产品图片画廊
   ============================================ */

.product-gallery {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: var(--space-md);
}

.product-gallery-thumbs {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  overflow-y: auto;
  max-height: 600px;
}

.product-gallery-thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  background-color: var(--color-gray-100);
  transition: border-color var(--transition-fast);
}

.product-gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.product-gallery-thumb:hover {
  border-color: var(--color-gray-300);
}

.product-gallery-thumb.active {
  border-color: var(--color-primary);
}

.product-gallery-main {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-gray-100);
}

.product-gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.product-gallery-main:hover img {
  transform: scale(1.02);
}

.product-gallery-main-zoom {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 40px;
  height: 40px;
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  color: var(--color-gray-700);
  transition: all var(--transition-fast);
}

.product-gallery-main-zoom:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.product-gallery-main-zoom svg {
  width: 18px;
  height: 18px;
}


/* ============================================
   15. 产品信息区
   ============================================ */

.product-info {
  padding-top: var(--space-xs);
}

.product-info-breadcrumb {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.5px;
}

.product-info-breadcrumb a {
  color: var(--color-gray-500);
  text-decoration: none;
}

.product-info-breadcrumb a:hover {
  color: var(--color-primary);
}

.product-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.2;
  margin-bottom: var(--space-md);
  letter-spacing: -0.5px;
}

.product-price-box {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.product-price {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-dark);
}

.product-price-old {
  font-size: var(--font-size-lg);
  color: var(--color-gray-500);
  text-decoration: line-through;
}

.product-price-save {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.product-stock {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-success);
  margin-bottom: var(--space-lg);
  font-weight: 500;
}

.product-stock::before {
  content: "";
  width: 8px;
  height: 8px;
  background-color: var(--color-success);
  border-radius: var(--radius-full);
}

.product-stock.out {
  color: var(--color-danger);
}

.product-stock.out::before {
  background-color: var(--color-danger);
}

.product-rating-lg {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  color: var(--color-warning);
}

.product-rating-lg .rating-text {
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

.product-description {
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  line-height: 1.7;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-gray-200);
}

/* 选项标题 */
.product-option-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.product-option-title .value {
  color: var(--color-gray-600);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  margin-left: 4px;
}

/* 尺码选择 */
.product-sizes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: var(--space-xl);
}

.product-size {
  min-width: 50px;
  height: 44px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  color: var(--color-dark);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.product-size:hover {
  border-color: var(--color-dark);
}

.product-size.active {
  border-color: var(--color-dark);
  background-color: var(--color-dark);
  color: var(--color-white);
}

.product-size.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  text-decoration: line-through;
}

/* 颜色选择 */
.product-colors {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: var(--space-xl);
}

.product-color {
  position: relative;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
}

.product-color::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
}

.product-color.active::after {
  border-color: var(--color-dark);
}

/* 数量 */
.product-qty {
  display: flex;
  align-items: center;
  height: 48px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  overflow: hidden;
  width: 140px;
}

.product-qty-btn {
  width: 44px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-white);
  color: var(--color-dark);
  font-size: var(--font-size-lg);
  transition: background-color var(--transition-fast);
}

.product-qty-btn:hover {
  background-color: var(--color-gray-100);
}

.product-qty-input {
  flex: 1;
  height: 100%;
  border: none;
  text-align: center;
  font-size: var(--font-size-base);
  font-weight: 500;
  background-color: transparent;
}

.product-qty-input:focus {
  outline: none;
}

/* 产品操作按钮组 */
.product-actions {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.product-actions .btn {
  flex: 1;
  height: 52px;
}

.product-actions-secondary {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.product-action-btn {
  flex: 1;
  padding: 12px;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  transition: all var(--transition-fast);
}

.product-action-btn:hover {
  border-color: var(--color-dark);
  background-color: var(--color-gray-50);
}

.product-action-btn svg {
  width: 16px;
  height: 16px;
}

/* 产品详情列表 */
.product-meta {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-gray-200);
}

.product-meta-item {
  display: flex;
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-sm);
  color: var(--color-gray-700);
}

.product-meta-item .label {
  width: 100px;
  color: var(--color-gray-600);
  flex-shrink: 0;
}

.product-meta-item .value {
  color: var(--color-dark);
  flex: 1;
}

.product-meta-item a {
  color: var(--color-dark);
  text-decoration: none;
  margin-right: var(--space-xs);
}

.product-meta-item a:hover {
  color: var(--color-primary);
}

/* 折叠面板 */
.product-accordion {
  border-top: 1px solid var(--color-gray-200);
  margin-top: var(--space-xl);
}

.product-accordion-item {
  border-bottom: 1px solid var(--color-gray-200);
}

.product-accordion-header {
  width: 100%;
  padding: var(--space-lg) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
  cursor: pointer;
  background: none;
  border: none;
  text-align: left;
  transition: color var(--transition-fast);
}

.product-accordion-header:hover {
  color: var(--color-primary);
}

.product-accordion-header svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-base);
}

.product-accordion-item.active .product-accordion-header svg {
  transform: rotate(180deg);
}

.product-accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
}

.product-accordion-item.active .product-accordion-body {
  max-height: 500px;
  padding-bottom: var(--space-lg);
}

.product-accordion-body p {
  color: var(--color-gray-700);
  font-size: var(--font-size-base);
  margin-bottom: var(--space-sm);
}


/* ============================================
   16. 相关产品区块
   ============================================ */

.related-section {
  padding: var(--space-3xl) 0;
  background-color: var(--color-gray-50);
}

.related-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-dark);
  text-align: center;
  margin-bottom: var(--space-2xl);
}


/* ============================================
   17. 面包屑导航
   ============================================ */

.breadcrumb {
  padding: var(--space-lg) 0;
  background-color: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-200);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
}

.breadcrumb-item a {
  color: var(--color-gray-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-item a:hover {
  color: var(--color-primary);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin: 0 var(--space-sm);
  color: var(--color-gray-400);
}

.breadcrumb-item.active {
  color: var(--color-dark);
  font-weight: 500;
}

/* 页面头部 */
.page-header {
  padding: var(--space-2xl) 0;
  background-color: var(--color-gray-50);
  border-bottom: 1px solid var(--color-gray-200);
}

.page-header-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-xs);
}

.page-header-desc {
  color: var(--color-gray-600);
  margin-bottom: 0;
}


/* ============================================
   18. 购物车页面
   ============================================ */

.cart-page {
  padding: var(--space-2xl) 0 var(--space-3xl);
  background-color: var(--color-gray-50);
  min-height: 60vh;
}

.cart-container {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-xl);
  align-items: flex-start;
}

.cart-items {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.cart-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.cart-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: var(--space-lg);
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-gray-200);
  align-items: center;
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item-image {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-gray-100);
}

.cart-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item-info {
  min-width: 0;
}

.cart-item-name {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 4px;
  line-height: 1.4;
}

.cart-item-name a {
  color: var(--color-dark);
  text-decoration: none;
}

.cart-item-name a:hover {
  color: var(--color-primary);
}

.cart-item-variant {
  font-size: var(--font-size-xs);
  color: var(--color-gray-600);
  margin-bottom: var(--space-sm);
}

.cart-item-price {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.cart-item-qty {
  display: inline-flex;
  align-items: center;
  height: 36px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.cart-item-qty-btn {
  width: 36px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-white);
  color: var(--color-dark);
  font-size: var(--font-size-base);
  transition: background-color var(--transition-fast);
}

.cart-item-qty-btn:hover {
  background-color: var(--color-gray-100);
}

.cart-item-qty-input {
  width: 44px;
  height: 100%;
  border: none;
  text-align: center;
  font-size: var(--font-size-sm);
  background-color: transparent;
}

.cart-item-qty-input:focus {
  outline: none;
}

.cart-item-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-sm);
}

.cart-item-subtotal {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
}

.cart-item-remove {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
  transition: color var(--transition-fast);
}

.cart-item-remove:hover {
  color: var(--color-danger);
}

/* 购物车摘要 */
.cart-summary {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
}

.summary-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-lg);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
}

.summary-row.total {
  border-top: 1px solid var(--color-gray-200);
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-lg);
}

.summary-shipping-note {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-bottom: var(--space-lg);
  text-align: center;
}

.summary-note {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-lg);
  resize: vertical;
  min-height: 80px;
}

.summary-note:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(17, 138, 126, 0.1);
}

.summary-checkout {
  width: 100%;
  height: 52px;
  font-size: var(--font-size-base);
  font-weight: 600;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  letter-spacing: 0.5px;
}

.summary-checkout:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.summary-continue {
  width: 100%;
  text-align: center;
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
}

.summary-continue:hover {
  color: var(--color-primary);
}

/* 购物车空状态 */
.cart-empty {
  padding: var(--space-3xl) 0;
  text-align: center;
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
}

.cart-empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-lg);
  color: var(--color-gray-300);
}

.cart-empty-icon svg {
  width: 100%;
  height: 100%;
}

.cart-empty-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.cart-empty-desc {
  color: var(--color-gray-600);
  margin-bottom: var(--space-xl);
}


/* ============================================
   19. 页面内容样式
   ============================================ */

.page-content {
  padding: var(--space-3xl) 0;
  background-color: var(--color-white);
}

.page-content h1,
.page-content h2,
.page-content h3,
.page-content h4 {
  color: var(--color-dark);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.page-content h1:first-child,
.page-content h2:first-child {
  margin-top: 0;
}

.page-content p {
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.page-content ul,
.page-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-lg);
  color: var(--color-gray-700);
}

.page-content ul {
  list-style: disc;
}

.page-content ol {
  list-style: decimal;
}

.page-content li {
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

.page-content blockquote {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  background-color: var(--color-primary-light);
  color: var(--color-gray-700);
  font-style: italic;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.page-content img {
  border-radius: var(--radius-md);
  margin: var(--space-lg) 0;
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-lg) 0;
  font-size: var(--font-size-sm);
}

.page-content th,
.page-content td {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-gray-300);
  text-align: left;
}

.page-content th {
  background-color: var(--color-gray-100);
  font-weight: 600;
  color: var(--color-dark);
}

.page-content hr {
  border: none;
  border-top: 1px solid var(--color-gray-200);
  margin: var(--space-2xl) 0;
}

.page-content a {
  color: var(--color-primary);
  text-decoration: underline;
}

.page-content strong {
  color: var(--color-dark);
}

/* 列表页工具栏 */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.toolbar-count {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.toolbar-sort {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-dark);
}

.toolbar-sort select {
  padding: 6px 12px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  background-color: var(--color-white);
  cursor: pointer;
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-2xl);
  list-style: none;
  padding: 0;
}

.pagination-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.pagination-item:hover {
  border-color: var(--color-dark);
  color: var(--color-dark);
}

.pagination-item.active {
  background-color: var(--color-dark);
  border-color: var(--color-dark);
  color: var(--color-white);
}

.pagination-item.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}


/* ============================================
   20. 侧边栏样式
   ============================================ */

.sidebar-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-xl);
  padding: var(--space-2xl) 0;
}

.sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-lg));
  align-self: flex-start;
}

.sidebar-widget {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-gray-200);
}

.sidebar-widget:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.sidebar-title {
  font-size: var(--font-size-md);
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.3px;
}

/* 侧边栏搜索 */
.sidebar-search {
  position: relative;
}

.sidebar-search input {
  width: 100%;
  padding: 10px 14px 10px 42px;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast);
}

.sidebar-search input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.sidebar-search svg {
  position: absolute;
  top: 50%;
  left: 14px;
  width: 18px;
  height: 18px;
  color: var(--color-gray-500);
  transform: translateY(-50%);
  pointer-events: none;
}

/* 分类列表 */
.sidebar-category-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-category-item {
  border-bottom: 1px solid var(--color-gray-200);
}

.sidebar-category-item:last-child {
  border-bottom: none;
}

.sidebar-category-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  font-size: var(--font-size-base);
  color: var(--color-dark);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.sidebar-category-link:hover,
.sidebar-category-link.active {
  color: var(--color-primary);
}

.sidebar-category-count {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

/* 价格过滤 */
.price-filter {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.price-filter input {
  width: 100%;
  padding: 8px 12px;
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
}

.price-filter-sep {
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

/* 标签云 */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tag-item {
  display: inline-block;
  padding: 6px 14px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-dark);
  text-decoration: none;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-full);
  background-color: var(--color-white);
  transition: all var(--transition-fast);
  letter-spacing: 0.3px;
}

.tag-item:hover,
.tag-item.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

/* 颜色过滤 */
.color-filter-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.color-filter-item {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  cursor: pointer;
  position: relative;
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 1px var(--color-gray-300);
  transition: all var(--transition-fast);
}

.color-filter-item:hover,
.color-filter-item.active {
  box-shadow: 0 0 0 2px var(--color-dark);
}


/* ============================================
   21. Footer 页脚
   ============================================ */

.footer {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--space-3xl) 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-3xl);
}

.footer-col {
  min-width: 0;
}

.footer-logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: var(--space-md);
  letter-spacing: -0.5px;
}

.footer-desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.footer-social-link {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  text-decoration: none;
}

.footer-social-link:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.footer-social-link svg {
  width: 16px;
  height: 16px;
}

.footer-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  letter-spacing: 0.5px;
}

.footer-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-list li {
  margin-bottom: var(--space-sm);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-white);
}

/* Newsletter */
.footer-newsletter-desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--space-md);
  line-height: 1.6;
}

.footer-newsletter-form {
  display: flex;
  gap: var(--space-xs);
}

.footer-newsletter-input {
  flex: 1;
  padding: 10px 14px;
  font-size: var(--font-size-sm);
  color: var(--color-dark);
  background-color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.footer-newsletter-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.footer-newsletter-btn {
  padding: 10px 20px;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  white-space: nowrap;
}

.footer-newsletter-btn:hover {
  background-color: var(--color-primary-hover);
}

/* 联系方式 */
.footer-contact {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  line-height: 1.8;
}

.footer-contact p {
  margin-bottom: var(--space-xs);
  color: var(--color-gray-500);
  font-size: var(--font-size-sm);
}

.footer-contact strong {
  color: var(--color-white);
  font-weight: 500;
}

/* ============================================
   22. 版权信息栏
   ============================================ */

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--space-lg) 0;
  margin-top: var(--space-xl);
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-copy {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-bottom-links a {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: var(--color-white);
}

/* ============================================
   23. 购物车抽屉
   ============================================ */

.cart-drawer-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: 998;
}

.cart-drawer-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.cart-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 420px;
  max-width: 100vw;
  height: 100vh;
  background-color: var(--color-white);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  z-index: 999;
  display: flex;
  flex-direction: column;
}

.cart-drawer.is-open {
  transform: translateX(0);
}

.cart-drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
}

.cart-drawer-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  color: var(--color-dark);
}

.cart-drawer-close {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-gray-600);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.cart-drawer-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-dark);
}

.cart-drawer-close svg {
  width: 20px;
  height: 20px;
}

.cart-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
}

.cart-drawer-item {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--color-gray-200);
  align-items: flex-start;
}

.cart-drawer-item-image {
  width: 70px;
  height: 70px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-gray-100);
}

.cart-drawer-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-drawer-item-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-dark);
  line-height: 1.4;
  margin-bottom: 4px;
}

.cart-drawer-item-variant {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-bottom: var(--space-xs);
}

.cart-drawer-item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.cart-drawer-item-qty {
  display: inline-flex;
  align-items: center;
  height: 28px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.cart-drawer-item-qty button {
  width: 24px;
  height: 100%;
  background-color: var(--color-white);
  border: none;
  color: var(--color-dark);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.cart-drawer-item-qty button:hover {
  background-color: var(--color-gray-100);
}

.cart-drawer-item-qty span {
  width: 28px;
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-dark);
}

.cart-drawer-item-price {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
}

.cart-drawer-item-remove {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
  transition: color var(--transition-fast);
}

.cart-drawer-item-remove:hover {
  color: var(--color-danger);
}

.cart-drawer-empty {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.cart-drawer-empty-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.cart-drawer-empty-desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--space-lg);
}

.cart-drawer-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-gray-200);
  background-color: var(--color-white);
}

.cart-drawer-subtotal {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  font-size: var(--font-size-base);
  color: var(--color-dark);
}

.cart-drawer-subtotal .label {
  color: var(--color-gray-600);
}

.cart-drawer-subtotal .amount {
  font-weight: 700;
  font-size: var(--font-size-lg);
}

.cart-drawer-note {
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  text-align: center;
  margin-bottom: var(--space-md);
}

.cart-drawer-checkout {
  width: 100%;
  height: 48px;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-white);
  background-color: var(--color-primary);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  letter-spacing: 0.5px;
}

.cart-drawer-checkout:hover {
  background-color: var(--color-primary-hover);
}

/* ============================================
   24. Toast 通知
   ============================================ */

.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-width: 280px;
  max-width: 360px;
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border-left: 4px solid var(--color-primary);
  opacity: 0;
  transform: translateX(100px);
  transition: all var(--transition-base);
  pointer-events: auto;
}

.toast.is-visible {
  opacity: 1;
  transform: translateX(0);
}

.toast-success {
  border-left-color: var(--color-success);
}

.toast-error {
  border-left-color: var(--color-danger);
}

.toast-warning {
  border-left-color: var(--color-warning);
}

.toast-info {
  border-left-color: var(--color-primary);
}

.toast-icon {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
}

.toast-success .toast-icon {
  color: var(--color-success);
}

.toast-error .toast-icon {
  color: var(--color-danger);
}

.toast-warning .toast-icon {
  color: var(--color-warning);
}

.toast-icon svg {
  width: 20px;
  height: 20px;
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 2px;
}

.toast-message {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.4;
}

.toast-close {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: var(--color-gray-400);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.toast-close:hover {
  background-color: var(--color-gray-100);
  color: var(--color-dark);
}

.toast-close svg {
  width: 14px;
  height: 14px;
}

/* ============================================
   25. 响应式断点 - 平板 (1024px)
   ============================================ */

@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .cart-container {
    grid-template-columns: 1fr;
  }

  .cart-summary {
    position: static;
  }

  .hero-content {
    max-width: 100%;
  }
}

/* ============================================
   25. 响应式断点 - 手机 (768px)
   ============================================ */

@media (max-width: 768px) {
  /* 基础调整 */
  :root {
    --header-height: 60px;
  }

  html {
    font-size: 14px;
  }

  h1 { font-size: 32px; }
  h2 { font-size: 26px; }
  h3 { font-size: 22px; }
  h4 { font-size: 18px; }

  .container {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .section {
    padding: var(--space-2xl) 0;
  }

  /* 公告栏 */
  .announcement-bar {
    font-size: var(--font-size-xs);
    padding: 8px 12px;
  }

  /* 头部 */
  .header-nav {
    display: none;
  }

  .header-actions .header-icon-btn.hidden-mobile {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  /* Hero */
  .hero-section,
  .hero-banner {
    min-height: 400px;
  }

  .hero-title {
    font-size: 28px;
    margin-bottom: var(--space-sm);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
    margin-bottom: var(--space-lg);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

  /* 分类导航 */
  .category-nav {
    padding: var(--space-md) 0;
  }

  .category-nav-list {
    overflow-x: auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }

  .category-nav-link {
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* 产品网格 - 手机2列 */
  .product-grid,
  .product-grid-3,
  .product-grid-2 {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg) var(--space-sm);
  }

  .product-card-info {
    padding: var(--space-sm) 4px 4px;
  }

  .product-card-title {
    font-size: var(--font-size-sm);
  }

  .product-card-price {
    font-size: var(--font-size-sm);
  }

  .product-quick-add {
    display: none;
  }

  /* 分类卡片 */
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .category-card-name {
    font-size: var(--font-size-base);
  }

  /* 产品详情 */
  .product-detail-wrap {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .product-gallery {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .product-gallery-thumbs {
    order: 2;
    flex-direction: row;
    gap: var(--space-xs);
    overflow-x: auto;
    max-height: none;
  }

  .product-gallery-thumbs .product-gallery-thumb {
    width: 60px;
    flex-shrink: 0;
    aspect-ratio: 1 / 1;
  }

  .product-gallery-main {
    order: 1;
  }

  .product-actions {
    flex-direction: column;
  }

  .product-actions .btn {
    width: 100%;
  }

  /* 购物车页面 */
  .cart-item {
    grid-template-columns: 80px 1fr;
    gap: var(--space-sm);
  }

  .cart-item-image {
    width: 80px;
    height: 80px;
  }

  .cart-item-actions {
    grid-column: 1 / -1;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    width: 100%;
  }

  /* 侧边栏布局 - 手机隐藏 */
  .sidebar-layout {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .sidebar {
    position: static;
    order: -1;
  }

  /* 工具栏 */
  .toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
  }

  /* Footer */
  .footer {
    padding: var(--space-2xl) 0 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    padding-bottom: var(--space-2xl);
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-sm);
  }

  .footer-bottom-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-md);
  }

  .footer-newsletter-form {
    flex-direction: column;
  }

  .footer-newsletter-btn {
    width: 100%;
  }

  /* 购物车抽屉 */
  .cart-drawer {
    width: 100%;
  }

  /* Toast */
  .toast-container {
    top: auto;
    bottom: 20px;
    right: 12px;
    left: 12px;
    align-items: stretch;
  }

  .toast {
    min-width: auto;
    max-width: 100%;
    width: 100%;
  }

  /* 分页 */
  .pagination {
    flex-wrap: wrap;
  }

  /* 页面头部 */
  .page-header {
    padding: var(--space-xl) 0;
  }

  .page-header-title {
    font-size: var(--font-size-xl);
  }
}

/* 超小屏 (480px) */
@media (max-width: 480px) {
  .product-grid,
  .product-grid-3,
  .product-grid-2 {
    gap: var(--space-sm) var(--space-xs);
  }

  .product-sizes {
    gap: 8px;
  }

  .product-size {
    min-width: 44px;
    height: 40px;
    padding: 0 12px;
  }
}

/* ============================================
   26. 动画与过渡
   ============================================ */

/* Fade-in 动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Scale 动画 */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Pulse 动画 */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* Bounce 动画 */
@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* Shake 动画 */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

/* Spin 动画 */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* 动画工具类 */
.animate-fade-in {
  animation: fadeIn 0.5s ease forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in-down {
  animation: fadeInDown 0.6s ease forwards;
}

.animate-fade-in-left {
  animation: fadeInLeft 0.6s ease forwards;
}

.animate-fade-in-right {
  animation: fadeInRight 0.6s ease forwards;
}

.animate-scale-in {
  animation: scaleIn 0.4s ease forwards;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-bounce {
  animation: bounce 1s ease infinite;
}

.animate-shake {
  animation: shake 0.5s ease;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* 动画延迟 */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-500 { animation-delay: 0.5s; }
.delay-700 { animation-delay: 0.7s; }
.delay-1000 { animation-delay: 1s; }

/* 动画初始状态 - 需配合 JS 触发 */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Hover 效果 */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-zoom {
  overflow: hidden;
}

.hover-zoom img {
  transition: transform 0.5s ease;
}

.hover-zoom:hover img {
  transform: scale(1.08);
}

.hover-opacity {
  transition: opacity var(--transition-fast);
}

.hover-opacity:hover {
  opacity: 0.85;
}

.hover-underline {
  position: relative;
  text-decoration: none;
}

.hover-underline::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: currentColor;
  transition: width var(--transition-base);
}

.hover-underline:hover::after {
  width: 100%;
}

/* 骨架屏加载 */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-gray-200) 25%,
    var(--color-gray-100) 50%,
    var(--color-gray-200) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* 滚动行为 - 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 选中文本颜色 */
::selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

::-moz-selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* 滚动条样式 */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--color-gray-400);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-gray-500);
}

/* 工具类：无障碍 */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* 工具类：浮动 */
.float-left { float: left; }
.float-right { float: right; }
.clearfix::after {
  content: "";
  display: table;
  clear: both;
}

/* 响应式显示类 */
@media (max-width: 768px) {
  .desktop-only {
    display: none !important;
  }
}

@media (min-width: 769px) {
  .mobile-only {
    display: none !important;
  }
}

/* 打印样式 */
@media print {
  .announcement-bar,
  .header-section,
  .footer,
  .cart-drawer,
  .toast-container,
  .category-nav {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }
}