/* ==========================================================================
   云联盟导购站 — 品牌级设计系统 v5.0
   设计理念：专业 · 科技感 · 信赖 · 精致
   ========================================================================== */

/* ---- 设计令牌（CSS Custom Properties） ---- */
:root {
  /* 主色系 — 深海蓝 */
  --c-primary: #1A56DB;
  --c-primary-light: #3B82F6;
  --c-primary-lighter: #60A5FA;
  --c-primary-dark: #0F3D9C;
  --c-primary-darker: #0A2D6E;

  /* 辅助色 */
  --c-accent: #06B6D4;
  --c-accent-light: #22D3EE;
  --c-success: #10B981;
  --c-success-light: #34D399;
  --c-warning: #F59E0B;
  --c-danger: #EF4444;

  /* 中性色阶 */
  --c-slate-900: #0F172A;
  --c-slate-800: #1E293B;
  --c-slate-700: #334155;
  --c-slate-600: #475569;
  --c-slate-500: #64748B;
  --c-slate-400: #94A3B8;
  --c-slate-300: #CBD5E1;
  --c-slate-200: #E2E8F0;
  --c-slate-100: #F1F5F9;
  --c-slate-50: #F8FAFC;

  /* 背景色 */
  --bg-base: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-elevated: #FFFFFF;
  --bg-subtle: #F1F5F9;

  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #0F3D9C 0%, #1A56DB 45%, #3B82F6 100%);
  --gradient-hero: linear-gradient(135deg, #0A2D6E 0%, #0F3D9C 30%, #1A56DB 60%, #2563EB 100%);
  --gradient-accent: linear-gradient(135deg, #06B6D4 0%, #3B82F6 100%);
  --gradient-success: linear-gradient(135deg, #059669 0%, #10B981 100%);
  --gradient-card: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.08), 0 4px 12px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 20px 48px rgba(15, 23, 42, 0.10), 0 8px 20px rgba(15, 23, 42, 0.06);
  --shadow-primary: 0 8px 24px rgba(26, 86, 219, 0.25);
  --shadow-primary-lg: 0 12px 36px rgba(26, 86, 219, 0.30);

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition: 250ms var(--ease-out);
  --transition-slow: 400ms var(--ease-out);
}

/* ---- 全局基础 ---- */
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-base);
  color: var(--c-slate-800);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ---- 精致滚动条 ---- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--c-slate-100);
}
::-webkit-scrollbar-thumb {
  background: var(--c-slate-300);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--c-slate-400);
}

/* ==========================================================================
   组件样式
   ========================================================================== */

/* ---- 表格 ---- */
.zebra-table {
  width: 100%;
  border-collapse: collapse;
}
.zebra-table thead th {
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  color: var(--c-primary-dark);
  font-weight: 700;
  text-align: left;
  padding: 1rem 1.25rem;
  border-bottom: 2px solid #BFDBFE;
  white-space: nowrap;
  font-size: 1rem;
  letter-spacing: 0.02em;
}
.zebra-table tbody td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--c-slate-200);
  vertical-align: middle;
  font-size: 1rem;
}
.zebra-table tbody tr:nth-child(odd) {
  background-color: var(--bg-surface);
}
.zebra-table tbody tr:nth-child(even) {
  background-color: var(--c-slate-50);
}
.zebra-table tbody tr:hover {
  background-color: #EFF6FF;
  transition: background-color var(--transition-fast);
}

/* ---- 价格样式 ---- */
.price-tag {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--c-success);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}
.price-tag .currency {
  font-size: 1.125rem;
  font-weight: 700;
  margin-right: 0.125rem;
}
.price-tag .unit {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--c-slate-500);
  margin-left: 0.25rem;
}
.price-original {
  font-size: 0.875rem;
  color: var(--c-slate-400);
  text-decoration: line-through;
}

/* ---- 产品卡片（品牌级精修） ---- */
.product-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
  overflow: hidden;
  border: 1px solid var(--c-slate-200);
  position: relative;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 2;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--c-primary-lighter);
}
.product-card-brand-bar {
  height: 3px;
}

/* ---- 配置标签 ---- */
.config-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.75rem;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  color: var(--c-primary);
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  margin-right: 0.375rem;
  margin-bottom: 0.375rem;
  border: 1px solid #DBEAFE;
  letter-spacing: 0.01em;
}

/* ---- CTA 按钮 ---- */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--c-primary);
  color: #FFFFFF;
  font-weight: 600;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  text-decoration: none;
  cursor: pointer;
  border: none;
  letter-spacing: 0.01em;
  position: relative;
  overflow: hidden;
}
.cta-btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.5s, height 0.5s;
}
.cta-btn:hover::after {
  width: 300px;
  height: 300px;
}
.cta-btn:hover {
  background: var(--c-primary-dark);
  box-shadow: var(--shadow-primary);
  transform: translateY(-1px);
}
.cta-btn:active {
  transform: scale(0.98);
}

/* ---- 活动倒计时 ---- */
.countdown {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-variant-numeric: tabular-nums;
}
.countdown .cd-num {
  display: inline-block;
  min-width: 1.75rem;
  text-align: center;
  background: var(--c-slate-800);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  padding: 0.125rem 0.375rem;
  font-weight: 700;
  font-size: 0.875rem;
}
.countdown .cd-sep {
  color: var(--c-slate-500);
  font-weight: 700;
}

/* ---- CSS 柱状图 ---- */
.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  height: 180px;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--c-slate-200);
}
.bar-chart .bar-col {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  min-width: 0;
}
.bar-chart .bar {
  width: 70%;
  background: linear-gradient(180deg, var(--c-primary-light) 0%, var(--c-primary) 100%);
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  min-height: 2px;
  transition: height 0.3s var(--ease-out);
}
.bar-chart .bar-label {
  font-size: 0.6875rem;
  color: var(--c-slate-500);
  margin-top: 0.25rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.bar-chart .bar-value {
  font-size: 0.6875rem;
  color: var(--c-slate-800);
  font-weight: 700;
  margin-bottom: 0.125rem;
}

/* ---- 表单 ---- */
.form-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--c-slate-300);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background-color: var(--bg-surface);
}
.form-input:focus {
  outline: none;
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.12);
}
.form-label {
  display: block;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--c-slate-600);
  margin-bottom: 0.25rem;
}

/* ---- 状态徽章 ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.badge-active {
  background: linear-gradient(135deg, #D1FAE5, #A7F3D0);
  color: #065F46;
}
.badge-offline {
  background: linear-gradient(135deg, #FEE2E2, #FECACA);
  color: #991B1B;
}
.badge-featured {
  background: linear-gradient(135deg, #DBEAFE, #BFDBFE);
  color: var(--c-primary-dark);
}

/* ---- 侧边栏 ---- */
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  color: var(--c-slate-600);
  font-size: 1rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: all var(--transition-fast);
}
.sidebar-link:hover {
  background-color: var(--c-slate-100);
  color: var(--c-slate-800);
}
.sidebar-link.active {
  background: linear-gradient(90deg, #EFF6FF, transparent);
  color: var(--c-primary);
  border-left-color: var(--c-primary);
  font-weight: 600;
}

/* ---- 表格横向滚动 ---- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ---- 卡片容器 ---- */
.card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 1.5rem;
  border: 1px solid var(--c-slate-200);
}

/* ---- 空状态 ---- */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--c-slate-400);
}

/* ==========================================================================
   Hero 区域 — 品牌级视觉
   ========================================================================== */
.hero-section {
  position: relative;
  overflow: hidden;
  background: var(--gradient-hero);
  border-radius: var(--radius-2xl);
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/img/hero-bg.svg');
  background-size: cover;
  background-position: center;
  opacity: 0.35;
}
.hero-section::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top right, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at bottom left, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  pointer-events: none;
}
.hero-stats {
  display: flex;
  gap: 2.5rem;
  justify-content: flex-start;
  flex-wrap: wrap;
}
.hero-stat {
  text-align: left;
  position: relative;
}
.hero-stat:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -1.25rem;
  top: 15%;
  height: 70%;
  width: 1px;
  background: rgba(255, 255, 255, 0.2);
}
.hero-stat-num {
  font-size: 2.25rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1;
  letter-spacing: -0.03em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}
.hero-stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 0.375rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ---- 产品卡片增强 ---- */
.product-card-image-wrap {
  background: linear-gradient(135deg, #F1F5F9, #E2E8F0);
  position: relative;
  overflow: hidden;
}
.product-card-image-wrap::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0) 55%, rgba(0,0,0,0.12) 100%);
  pointer-events: none;
}
.card-price-block {
  background: linear-gradient(135deg, #ECFDF5 0%, #D1FAE5 100%);
  border-radius: var(--radius-md);
  padding: 14px;
  border: 1px solid #A7F3D0;
}

/* ---- 按钮渐变 ---- */
.btn-gradient {
  background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-primary-light) 100%);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}
.btn-gradient:hover::before {
  left: 100%;
}
.btn-gradient:hover {
  background: linear-gradient(135deg, var(--c-primary-dark) 0%, var(--c-primary) 100%);
  box-shadow: var(--shadow-primary-lg);
  transform: translateY(-2px);
}

/* ---- Logo hover ---- */
.platform-logo {
  transition: transform var(--transition);
  border-radius: var(--radius-sm);
}
.platform-logo:hover {
  transform: scale(1.08);
}

/* ==========================================================================
   新增组件 — 品牌级增强
   ========================================================================== */

/* ---- 信任背书条 ---- */
.trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  padding: 1rem 0;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--c-slate-500);
  font-size: 0.9375rem;
  font-weight: 500;
}
.trust-item svg {
  width: 1.125rem;
  height: 1.125rem;
  color: var(--c-success);
  flex-shrink: 0;
}

/* ---- 特性卡片 ---- */
.feature-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  border: 1px solid var(--c-slate-200);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-primary-lighter);
}
.feature-card:hover::before {
  transform: scaleX(1);
}
.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  color: var(--c-primary);
}
.feature-icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

/* ---- 章节标题 ---- */
.section-title {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--c-slate-900);
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
}
.section-title-icon {
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-sm);
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  flex-shrink: 0;
}
.section-title-icon svg {
  width: 1.125rem;
  height: 1.125rem;
}

/* ---- 城市卡片 ---- */
.city-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1rem;
  text-align: center;
  border: 1px solid var(--c-slate-200);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.city-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform var(--transition);
}
.city-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-primary-lighter);
}
.city-card:hover::before {
  transform: scaleX(1);
}
.city-card-icon {
  width: 2.5rem;
  height: 2.5rem;
  margin: 0 auto 0.5rem;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-primary);
}
.city-card-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* ---- 平台卡片 ---- */
.platform-card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  border: 1px solid var(--c-slate-200);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.875rem;
}
.platform-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: var(--c-primary-lighter);
}

/* ---- Glassmorphism 元素 ---- */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

/* ---- 装饰性渐变球 ---- */
.decor-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.3;
  pointer-events: none;
  z-index: 0;
}

/* ==========================================================================
   全局增强
   ========================================================================== */

/* ---- 焦点样式 ---- */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---- 图片 fade-in ---- */
img[data-loading] {
  opacity: 0;
  transition: opacity 0.3s ease;
}
img[data-loaded] {
  opacity: 1;
}

/* ---- 搜索筛选标签 ---- */
.filter-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  color: var(--c-primary);
  border: 1px solid #BFDBFE;
  border-radius: var(--radius-full);
  padding: 0.3rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 600;
}
.filter-tag a {
  color: var(--c-primary);
  text-decoration: none;
  font-weight: 800;
  line-height: 1;
}
.filter-tag a:hover {
  color: var(--c-primary-dark);
}

/* ---- 对比表格最优值高亮 ---- */
.compare-best {
  background: linear-gradient(135deg, #D1FAE5, #A7F3D0) !important;
  font-weight: 800;
  color: #065F46;
}

/* ---- 教程步骤 ---- */
.guide-step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
  position: relative;
}
.guide-step-num {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--gradient-primary);
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  box-shadow: var(--shadow-primary);
}
.guide-step-body {
  flex: 1;
  padding-top: 0.25rem;
}
.guide-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 1.25rem;
  top: 2.5rem;
  bottom: -0.75rem;
  width: 2px;
  background: linear-gradient(to bottom, #BFDBFE, transparent);
}

/* ---- 提示框 ---- */
.tip-box {
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  font-size: 1rem;
  line-height: 1.7;
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
}
.tip-box-info {
  background: linear-gradient(135deg, #EFF6FF, #DBEAFE);
  border-left: 4px solid var(--c-primary);
  color: var(--c-primary-dark);
}
.tip-box-warning {
  background: linear-gradient(135deg, #FFFBEB, #FEF3C7);
  border-left: 4px solid var(--c-warning);
  color: #92400E;
}

/* ---- 渐入动画 ---- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
.fade-in-up {
  animation: fadeInUp 0.6s var(--ease-out) both;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.fade-in {
  animation: fadeIn 0.5s ease both;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 640px) {
  .hero-stats { gap: 1.25rem; }
  .hero-stat:not(:last-child)::after { display: none; }
  .hero-stat-num { font-size: 1.5rem; }
  .hero-section { padding: 1.5rem; min-height: auto; border-radius: var(--radius-xl); }
  .hero-section h1 { font-size: 1.5rem; }
  .hero-section p { font-size: 0.875rem; }
  .product-card { padding: 1rem; }
  .price-tag { font-size: 1.5rem; }
  .cta-btn { padding: 0.625rem 1rem; min-height: 44px; }
  .form-input { font-size: 16px; }
  .sidebar-link { padding: 0.75rem 1rem; min-height: 44px; }
  .card { padding: 1rem; border-radius: var(--radius-md); }
  .zebra-table thead th { padding: 0.625rem 0.875rem; font-size: 0.875rem; }
  .zebra-table tbody td { padding: 0.625rem 0.875rem; font-size: 0.875rem; }
  .guide-step-num { width: 2rem; height: 2rem; font-size: 0.875rem; }
  .guide-step:not(:last-child)::after { left: 1rem; top: 2rem; }
  .section-title { font-size: 1.25rem; }
  .feature-card { padding: 1.25rem; }
  .trust-bar { gap: 1rem; }
}

@media (min-width: 641px) and (max-width: 768px) {
  .hero-section { padding: 2rem; }
  .hero-section h1 { font-size: 1.75rem; }
}

@media (min-width: 1024px) {
  .product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
  }
  .hero-section {
    background: var(--gradient-hero);
  }
}

/* ---- 骨架屏 ---- */
.skeleton {
  background: linear-gradient(90deg, var(--c-slate-100) 25%, var(--c-slate-200) 50%, var(--c-slate-100) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---- 触摸友好 ---- */
button, .cta-btn, a[role="button"] {
  min-height: 44px;
  min-width: 44px;
}

/* ---- 移动端菜单动画 ---- */
#mobile-menu {
  transition: max-height 0.3s ease, opacity 0.3s ease;
  overflow: hidden;
}
#mobile-menu.show {
  display: block !important;
  animation: slideDown 0.2s var(--ease-out);
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---- 管理后台侧边栏移动端 ---- */
@media (max-width: 768px) {
  aside[class*="w-56"] {
    width: 100% !important;
    min-height: auto !important;
    border-right: none !important;
    border-bottom: 1px solid var(--c-slate-200);
  }
  .flex.min-h-screen {
    flex-direction: column;
  }
  .sidebar-link {
    display: inline-flex;
    padding: 0.5rem 0.75rem;
    border-left: none;
    border-bottom: 3px solid transparent;
  }
  .sidebar-link.active {
    border-left: none;
    border-bottom-color: var(--c-primary);
  }
  aside[class*="w-56"] nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    padding: 0.5rem;
  }
}

/* ---- 输入框适配 ---- */
input[type="text"], input[type="password"], input[type="email"],
input[type="number"], input[type="url"], input[type="search"],
textarea, select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

/* ---- 暗色模式支持 ---- */
@media (prefers-color-scheme: dark) {
  .dark-auto {
    --bg-base: #1a1a2e;
    --c-slate-800: #e2e8f0;
  }
}

/* ---- 渐变文字 ---- */
.gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---- 分隔线装饰 ---- */
.divider-glow {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--c-slate-300), transparent);
  margin: 2rem 0;
}