/* ============================================
   SONJINXUAN PREMIUM DESIGN SYSTEM v2.0
   松景筑轩 - 高端UI优化升级版
   ============================================ */

:root {
  /* ===== 欧美电商色彩系统 ===== */
  --color-primary: #2A4365;
  --color-primary-dark: #1A365D;
  --color-primary-light: #42648F;
  --color-primary-soft: #EEF3FA;

  --color-accent: #E53E3E;
  --color-accent-dark: #C53030;
  --color-accent-light: #FED7D7;
  --color-accent-gradient: linear-gradient(135deg, #2A4365 0%, #1A365D 100%);

  --color-bg-primary: #F7FAFC;
  --color-bg-secondary: #EDF2F7;
  --color-bg-tertiary: #E2E8F0;
  --color-surface: #FFFFFF;
  --color-surface-2: #FBFCFE;
  --color-surface-3: #F3F6FB;

  --color-text-primary: #1A202C;
  --color-text-secondary: #4A5568;
  --color-text-tertiary: #667085;
  --color-text-muted: #667085;
  --color-text-soft: #CBD5E0;
  --color-text-on-strong: #FFFFFF;

  --color-border-light: #E2E8F0;
  --color-border: #CBD5E0;
  --color-border-dark: #A0AEC0;
  --color-border-strong: rgba(26, 54, 93, 0.22);
  
  --color-success: #27AE60;
  --color-success-light: #D5F5E3;
  --color-warning: #F39C12;
  --color-warning-light: #FCF3CF;
  --color-error: #E74C3C;
  --color-error-light: #FADBD8;
  --color-danger: #E74C3C;
  --color-info: #3498DB;
  --color-info-light: #D4E6F1;

  --color-brand-alipay: #1677FF;
  --color-brand-wechat: #07C160;
  --color-brand-gradient: linear-gradient(90deg, rgba(22, 119, 255, 0.95) 0%, rgba(7, 193, 96, 0.95) 52%, rgba(42, 67, 101, 0.95) 100%);
  
  /* ===== 字体系统 ===== */
  --font-heading: 'Inter', 'SF Pro Display', 'Roboto', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'SF Pro Text', 'Roboto', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', monospace;
  
  /* 字体大小 */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  --font-size-5xl: 3.5rem;
  
  /* 字重 */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* 行高 */
  --line-height-tight: 1.3;
  --line-height-relaxed: 1.6;
  
  /* ===== 间距系统 ===== */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 0.75rem;
  --spacing-lg: 1rem;
  --spacing-xl: 1.5rem;
  --spacing-2xl: 2rem;
  --spacing-3xl: 3rem;
  --spacing-4xl: 4rem;
  --spacing-5xl: 5rem;
  
  /* ===== 统一圆角系统 ===== */
  --radius-none: 0;
  --radius-xs: 0.125rem;
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;
  
  /* ===== 高级阴影系统 ===== */
  --shadow-soft-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-soft-lg: 0 8px 20px rgba(0, 0, 0, 0.08);
  --shadow-soft-xl: 0 14px 32px rgba(0, 0, 0, 0.12);
  --shadow-float: 0 20px 40px rgba(0, 0, 0, 0.1);

  --shadow-glow-sm: 0 0 0 rgba(0, 0, 0, 0);
  --shadow-glow: 0 0 0 rgba(0, 0, 0, 0);
  
  --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.03);
  
  /* ===== 升级过渡动画系统 ===== */
  --transition-super-fast: 100ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-super-slow: 600ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   BASE RESET & FOUNDATIONS
   ============================================ */

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
  overflow-x: hidden;
}

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

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

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

a:focus-visible,
button:focus-visible,
select:focus-visible,
textarea:focus-visible,
input:focus-visible,
[role="button"]:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid rgba(42, 67, 101, 0.24);
  outline-offset: 3px;
}

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

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   PREMIUM TEXT STYLES
   ============================================ */

.text-display {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.text-h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.text-h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.text-h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
}

.text-h4 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.4;
}

.text-body-lg {
  font-size: 1.125rem;
  line-height: 1.7;
  font-weight: 400;
}

.text-body {
  font-size: 1rem;
  line-height: 1.6;
  font-weight: 400;
}

.text-body-sm {
  font-size: 0.875rem;
  line-height: 1.6;
  font-weight: 400;
}

.text-caption {
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--color-text-tertiary);
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 16px;
}

.container-fluid {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
}

.main-content {
  flex: 1;
}

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

.section-sm {
  padding: var(--spacing-xl) 0;
}

.section-lg {
  padding: var(--spacing-4xl) 0;
}

.section-header {
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.section-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--spacing-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  word-wrap: break-word;
}

.section-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  word-wrap: break-word;
}

/* ============================================
   PREMIUM BUTTON SYSTEM
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  position: relative;
  padding: 12px 24px;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  transition: background-color var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
  cursor: pointer;
  min-height: 48px;
  border: 1px solid transparent;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
  background-color: var(--color-bg-primary);
  border-color: var(--color-primary-dark);
  color: var(--color-primary-dark);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-bg-primary);
  border-color: var(--color-primary-dark);
  color: var(--color-primary-dark);
}

.btn-link {
  background: transparent;
  border: none;
  color: var(--color-primary);
  padding: 0;
}

.btn-link:hover {
  transform: none;
  box-shadow: none;
  text-decoration: underline;
}

.btn.is-loading,
.btn[disabled] {
  cursor: not-allowed;
}

.btn-sm {
  padding: 10px 16px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-border-light);
}

.btn-ghost:hover {
  background-color: var(--color-bg-primary);
}

.btn-danger {
  background: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.btn-danger:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
}

.btn-icon {
  transition: transform 0.2s ease;
}

.btn-icon:hover {
  transform: scale(1.1);
}

/* ============================================
   CART ANIMATIONS
   ============================================ */

.fly-ball {
  position: fixed;
  z-index: 9999;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  pointer-events: none;
}

.cart-btn {
  position: relative;
  transition: transform 0.2s ease;
}

.cart-btn.shake {
  animation: cartShake 0.4s ease;
}

@keyframes cartShake {
  0%, 100% { transform: scale(1); }
  25% { transform: scale(1.2); }
  50% { transform: scale(0.95); }
  75% { transform: scale(1.05); }
}

.cart-count {
  transition: all 0.3s ease;
}

.cart-count.animate {
  animation: countPop 0.4s ease;
}

@keyframes countPop {
  0% { transform: scale(0.5); opacity: 0; }
  50% { transform: scale(1.3); }
  100% { transform: scale(1); opacity: 1; }
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
  position: fixed;
  top: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background: var(--color-primary);
  color: white;
  padding: 14px 28px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: 10px;
  opacity: 0;
  transform: translateY(-20px);
  transition: all 0.3s ease;
  pointer-events: auto;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast i {
  color: var(--color-accent);
}

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

.toast--error {
  background: #4a1f1f;
}

.toast--warning {
  background: #5a3f12;
}

.toast--info {
  background: #1f3d57;
}

.toast--error i,
.toast--warning i,
.toast--info i {
  color: #ffffff;
}

.animate-pulse {
  animation: pulse 0.3s ease;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(0.95); }
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-xl);
  padding: var(--spacing-lg) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
  transition: all var(--transition-base);
}

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

.logo-icon {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  border-radius: 8px;
  color: white;
  font-size: 1.25rem;
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  flex-wrap: nowrap;
  overflow-x: auto;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  position: relative;
  padding: var(--spacing-sm) 0;
  transition: color var(--transition-base);
  white-space: nowrap;
  flex-shrink: 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.btn-icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
  display: grid;
  place-items: center;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-icon:hover {
  background: var(--color-bg-primary);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.cart-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 48px;
}

.cart-btn-compact {
  padding: 0.75rem 1rem;
  font-size: var(--font-size-sm);
}

.nav-account-name,
.nav-admin-link,
.nav-logout-button {
  font-size: var(--font-size-sm);
  line-height: 1.4;
  white-space: nowrap;
}

.nav-account-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.nav-admin-link {
  color: var(--color-primary);
}

.nav-inline-form {
  display: inline-flex;
}

.nav-logout-button {
  background: none;
  border: 0;
  padding: 0;
  color: var(--color-text-secondary);
}

.nav-logout-button:hover {
  color: var(--color-primary);
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--color-accent);
  color: white;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  min-width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  display: grid;
  place-items: center;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
}

/* ============================================
   LANGUAGE SWITCHER
   ============================================ */

.lang-switcher {
  display: flex;
  align-items: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 4px;
  gap: 4px;
}

.lang-btn {
  min-width: 48px;
  min-height: 48px;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.fi {
  font-size: 1.25rem;
  line-height: 1;
  width: 1.5em;
  height: 1em;
  display: inline-block;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

.lang-btn:hover {
  color: var(--color-text-primary);
}

.lang-btn.active {
  background: var(--color-primary);
  color: white;
}

/* ============================================
   MOBILE MENU
   ============================================ */

.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-surface);
  z-index: 1000;
  transform: translateX(-100%);
  transition: transform var(--transition-base);
  padding: var(--spacing-xl);
  overflow-y: auto;
}

.mobile-menu.show {
  transform: translateX(0);
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-2xl);
}

.mobile-menu-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
}

.menu-close {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  color: var(--color-text-primary);
}

.mobile-lang-switcher {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 4px;
  gap: 4px;
  margin-bottom: var(--spacing-xl);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  min-height: 48px;
  padding: var(--spacing-md) 0;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border-light);
  transition: color var(--transition-base);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--color-accent);
}

.menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.menu-overlay.active {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-divider {
  height: 1px;
  margin: var(--spacing-xl) 0;
  background: var(--color-border-light);
}

.mobile-menu-actions {
  display: grid;
  gap: var(--spacing-md);
}

.mobile-menu-account {
  display: grid;
  gap: var(--spacing-sm);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

.form-input {
  width: 100%;
  padding: 0.9rem 1rem;
  border-radius: 4px;
  border: 1px solid var(--color-border-light);
  background: #fff;
  color: var(--color-text-primary);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(42, 67, 101, 0.14);
}

.form-label {
  display: block;
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: 8px;
}

.form-required {
  color: var(--color-error);
}

.form-error {
  display: none;
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.form-error.is-visible {
  display: block;
}

.auth-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-2xl);
  align-items: start;
}

.auth-label {
  display: block;
  margin-bottom: 8px;
  color: #333333;
  font-weight: var(--font-weight-medium);
}

.auth-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.48);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1200;
}

.auth-modal-backdrop.is-active {
  opacity: 1;
  visibility: visible;
}

.auth-modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: var(--spacing-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1201;
}

.auth-modal.is-active {
  opacity: 1;
  visibility: visible;
}

.auth-modal-dialog {
  width: min(100%, 520px);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  background: #ffffff;
  border: none;
  border-radius: 16px;
  box-shadow: 0 24px 60px rgba(35, 30, 24, 0.18);
  position: relative;
}

.auth-modal-body {
  padding: 40px;
}

.auth-modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 48px;
  height: 48px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: #777777;
  cursor: pointer;
  z-index: 2;
}

.auth-modal-heading {
  margin-bottom: 32px;
  padding-right: 2.5rem;
}

.auth-modal-kicker {
  margin: 0 0 8px;
  color: var(--color-primary);
  letter-spacing: 1px;
  font-size: 14px;
  font-weight: 500;
}

.auth-modal-title {
  margin: 0 0 12px;
  font-family: var(--font-heading);
  font-size: 32px;
  line-height: 1.15;
  color: var(--color-text-primary);
  font-weight: 700;
}

.auth-modal-desc {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

.auth-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: 30px;
}

.auth-tab {
  width: 50%;
  padding: 12px 0;
  text-align: center;
  position: relative;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.auth-tab.is-active {
  color: var(--color-text-primary);
}

.auth-tab.is-active::after {
  content: "";
  position: absolute;
  left: 25%;
  bottom: -1px;
  width: 50%;
  height: 2px;
  background: var(--color-primary);
}

.auth-panel {
  display: none;
}

.auth-panel.is-active {
  display: block;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.auth-message {
  display: none;
  margin-bottom: 18px;
  padding: 0.9rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--color-border-light);
  font-size: 14px;
}

.auth-message.is-success {
  background: var(--color-success-light);
  border-color: rgba(86, 118, 94, 0.25);
  color: #56765E;
}

.auth-message.is-error {
  background: var(--color-error-light);
  border-color: rgba(180, 92, 92, 0.25);
  color: #B45C5C;
}

.auth-account-panel {
  display: grid;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.auth-account-item {
  padding: 14px 16px;
  border-radius: 8px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-light);
}

.auth-account-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: 0.35rem;
}

.auth-modal-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.auth-submit-btn {
  width: 100%;
  margin-top: 4px;
  padding: 15px;
  border: 0;
  border-radius: 4px;
  background: var(--color-primary);
  color: #ffffff;
  font-size: 16px;
  font-weight: 500;
  box-shadow: none;
  transition: all var(--transition-base);
}

.auth-submit-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft-lg);
}

.auth-form .form-input {
  padding: 14px;
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  margin-bottom: 18px;
  background: #ffffff;
}

.auth-form .form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(42, 67, 101, 0.14);
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero-section {
  padding: var(--spacing-4xl) 0;
  background: linear-gradient(180deg, rgba(42, 67, 101, 0.04) 0%, var(--color-bg-primary) 100%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

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

.hero-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: var(--spacing-md);
  white-space: nowrap;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  word-wrap: break-word;
}

.hero-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-2xl);
  word-wrap: break-word;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: nowrap;
  margin-bottom: var(--spacing-2xl);
}

.hero-actions .btn {
  white-space: nowrap;
  flex-shrink: 0;
}

.hero-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-soft-lg);
}

.hero-image img {
  width: 100%;
  height: 480px;
  object-fit: cover;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

.hero-features--home {
  margin-top: var(--spacing-2xl);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: 8px;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-soft-sm);
}

.feature-item i {
  font-size: 1.5rem;
  color: var(--color-primary);
}

.feature-item span {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* ============================================
   PRODUCT GRID & CARDS
   ============================================ */

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

.product-card {
  background: var(--color-surface);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--color-border-light);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-soft);
}

.product-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft-lg);
  border-color: var(--color-border);
}

.product-card:focus-within {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-soft-lg);
}

.product-image-container {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-bg-secondary);
  transition: all var(--transition-base);
}

.product-image-container:hover {
  opacity: 0.9;
}

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

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

.product-overlay {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  opacity: 0;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: 1;
}

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

.product-card:focus-within .product-overlay {
  opacity: 1;
  transform: translateY(0);
}

.product-action-btn {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-soft);
  display: grid;
  place-items: center;
  color: var(--color-text-primary);
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
}

.product-action-btn:hover {
  background: var(--color-bg-primary);
  color: var(--color-primary);
}

.product-card-media-link,
.product-card-link {
  display: grid;
  gap: var(--spacing-xs);
  color: inherit;
  text-decoration: none;
}

.product-card-media-link {
  display: block;
  width: 100%;
  height: 100%;
}

.product-card-link:hover .product-name,
.product-card-link:hover .product-category {
  color: var(--color-primary);
}

.product-info {
  padding: var(--spacing-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-category {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
  transition: color var(--transition-base);
}

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

.product-name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  margin-bottom: 0;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color var(--transition-base);
}

.product-category {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
  transition: color var(--transition-base);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.product-price {
  margin-top: auto;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.price-current {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.price-original {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-normal);
  color: var(--color-text-tertiary);
  text-decoration: line-through;
}

/* ============================================
   CATEGORIES
   ============================================ */

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

.category-card {
  position: relative;
  aspect-ratio: 4/5;
  border-radius: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-slow);
}

.category-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft-lg);
}

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

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

.category-info {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.7) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-xl);
  color: white;
}

.category-info h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-link {
  color: white;
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: gap var(--transition-base);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.category-link:hover {
  gap: var(--spacing-sm);
}

/* ============================================
   PREMIUM BADGES
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
}

.badge-primary {
  background: rgba(42, 67, 101, 0.12);
  color: var(--color-primary);
}

.badge-success {
  background: var(--color-success-light);
  color: var(--color-success);
}

.badge-warning {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.badge-error {
  background: var(--color-error-light);
  color: var(--color-error);
}

.badge-secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-slow);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-left {
  opacity: 0;
  transform: translateX(30px);
  transition: all var(--transition-slow);
}

.fade-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.95);
  transition: all var(--transition-slow);
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  background-color: var(--color-primary);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-brand {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-brand .logo {
  color: white;
  margin-bottom: var(--spacing-lg);
}

.footer-brand .logo:hover {
  color: var(--color-accent);
}

.footer-brand .logo-icon {
  background: rgba(255, 255, 255, 0.15);
}

.footer-brand .logo-text {
  color: white;
}

.footer-desc {
  color: rgba(255, 255, 255, 0.7);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.footer-social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer-social a,
.footer-social span {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.1);
  color: white;
  transition: all var(--transition-base);
}

.footer-social a:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

.footer-company-name {
  color: rgba(255, 255, 255, 0.85) !important;
  font-weight: 600;
}

.footer-company-meta {
  color: rgba(255, 255, 255, 0.7) !important;
}

.footer-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: white;
  margin-bottom: var(--spacing-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a,
.footer-links span {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  line-height: 1.8;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.footer-inline-form {
  display: inline;
}

.footer-brand {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: white;
  margin-bottom: var(--spacing-md);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* === 通用文本优化 === */
.text-nowrap {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.text-truncate-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.text-truncate-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (min-width: 768px) {
  .container { padding: 0 24px; }
}

@media (min-width: 1024px) {
  .container { padding: 0 24px; }
}

@media (max-width: 1280px) {
  .products-grid,
  .categories-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1200px) {
  .nav-links {
    gap: var(--spacing-lg);
  }
  
  .nav-link {
    font-size: 0.8rem;
  }
}

@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
  }
  
  .products-grid,
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .container-fluid {
    padding: 0 24px;
  }
  
  .hero-actions {
    flex-wrap: wrap;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .menu-toggle {
    display: grid;
    place-items: center;
  }
  
  .products-grid,
  .categories-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-features {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: var(--spacing-xl) 0;
  }
  
  .container {
    padding: 0 16px;
  }
  
  .lang-switcher {
    display: none;
  }
  
  .mobile-lang-switcher {
    display: flex;
  }

  .auth-layout,
  .checkout-grid,
  .cart-grid,
  .product-detail-grid {
    grid-template-columns: 1fr !important;
  }

  .checkout-layout,
  .checkout-grid-two,
  .checkout-grid-three,
  .checkout-page-header,
  .cart-page-header,
  .cart-login-banner {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .checkout-card-header,
  .checkout-login-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .auth-modal {
    padding: var(--spacing-md);
  }

  .auth-modal-body {
    padding: 28px 24px;
  }

  .auth-tabs,
  .auth-modal-actions {
    width: 100%;
  }

  .auth-tabs {
    display: flex;
  }

  .auth-modal-title {
    font-size: 28px;
  }

  .toast-container {
    width: calc(100% - 32px);
    top: 72px;
  }

  .toast {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .breadcrumb {
    flex-wrap: wrap;
  }

  .product-detail-actions,
  .auth-modal-actions {
    flex-direction: column;
  }

  .gallery-thumb {
    width: 68px;
    height: 68px;
  }

  .page-overlay-card,
  .not-found-card,
  .redirect-card {
    padding: var(--spacing-xl);
  }

  .cart-item-meta {
    flex-direction: column;
    align-items: flex-start !important;
  }

  .cart-item {
    flex-direction: column;
  }

  .cart-item-image {
    width: 100% !important;
    height: 220px !important;
  }

  .cart-summary {
    position: static !important;
  }

  .cart-summary-actions {
    position: sticky;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 12px);
    background: var(--color-surface);
    padding-top: var(--spacing-md);
  }

  .steps {
    align-items: stretch;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }
  
  .section-title {
    font-size: 1.5rem;
  }
  
  .container-fluid {
    padding: 0 1rem;
  }

  .header-inner {
    gap: var(--spacing-sm);
  }

  .logo-text {
    font-size: var(--font-size-lg);
  }

  .btn {
    width: 100%;
  }

  .nav-actions .btn-icon,
  .nav-actions .cart-btn {
    flex-shrink: 0;
  }

  .chat-window {
    max-width: calc(100vw - 24px);
  }
}

/* === 增强的表单样式 === */
.form-input {
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(42, 67, 101, 0.14);
}

.form-input.error {
  border-color: var(--color-error);
}

.form-input.error:focus {
  box-shadow: 0 0 0 4px rgba(231, 76, 60, 0.12);
}

.form-input.success {
  border-color: var(--color-success);
}

.form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

/* === 筛选标签样式 === */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tag:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

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

/* === 筛选栏固定样式 === */
.filter-sticky {
  position: sticky;
  top: 70px;
  z-index: 50;
  background: var(--color-bg-primary);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
}

/* === 商品卡片增强 === */
.product-card-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
  flex-wrap: nowrap;
}

.product-card-actions .btn {
  flex: 1;
  font-size: 0.875rem;
  padding: 10px 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* === 商品详情页图片轮播 === */
.gallery-main {
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--spacing-md);
  background: var(--color-surface);
  aspect-ratio: 4/5;
  position: relative;
}

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

.gallery-main:hover img {
  transform: scale(1.05);
}

.gallery-thumbs {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  padding-bottom: var(--spacing-xs);
}

.gallery-thumb {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

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

/* === 规格选择器 === */
.spec-selector {
  margin-bottom: var(--spacing-xl);
}

.spec-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.spec-options {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.spec-option {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: var(--font-weight-medium);
}

.spec-option:hover {
  border-color: rgba(42, 67, 101, 0.3);
}

.spec-option.active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: white;
}

.spec-option.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* === 固定加入购物车按钮 === */
.fixed-add-to-cart {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  z-index: 100;
  display: none;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
}

.fixed-add-to-cart.show {
  display: block;
}

/* === 商品详情页重构 === */
.product-detail-layout {
  gap: var(--spacing-2xl);
  align-items: start;
}

.product-detail-media-column,
.product-detail-info-column {
  min-width: 0;
}

.product-detail-sticky {
  position: sticky;
  top: 96px;
}

.product-detail-gallery-card,
.product-detail-panel,
.product-detail-tabs {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.product-detail-gallery-card,
.product-detail-panel {
  padding: var(--spacing-xl);
}

.product-detail-gallery-header,
.product-detail-kicker,
.product-detail-option-header,
.product-detail-stock-top,
.product-detail-price-row,
.product-detail-payment-row,
.product-detail-fixed-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.product-detail-gallery-meta,
.product-detail-gallery-trust,
.product-detail-trust-grid,
.product-detail-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.product-detail-gallery-count,
.product-detail-sku,
.product-detail-price-meta,
.product-detail-option-value,
.product-detail-quantity-note,
.product-detail-stock-qty {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.product-detail-gallery-stage {
  margin-bottom: var(--spacing-lg);
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-secondary);
}

.product-detail-gallery-thumbs {
  padding-bottom: 0;
}

.product-detail-gallery-thumbs .gallery-thumb {
  border-radius: 8px;
  background: var(--color-bg-secondary);
  border-color: var(--color-border-light);
}

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

.product-detail-gallery-trust {
  margin-top: var(--spacing-lg);
}

.product-detail-trust-inline,
.product-detail-trust-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: 14px 16px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  color: var(--color-text-primary);
}

.product-detail-trust-inline {
  flex: 1 1 220px;
}

.product-detail-trust-inline i,
.product-detail-trust-card i {
  color: var(--color-primary);
  font-size: 1rem;
  margin-top: 2px;
}

.product-detail-trust-inline span,
.product-detail-trust-card span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.product-detail-header {
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border-light);
}

.product-detail-kicker {
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.product-detail-title {
  margin: 0 0 var(--spacing-sm);
  font-size: 2rem;
  line-height: 1.25;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.product-detail-subtitle {
  margin: 0 0 var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.product-detail-summary {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.product-detail-price-card,
.product-detail-stock-box,
.product-detail-purchase-box {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-xl);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
}

.product-detail-price-main {
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.product-detail-price-original {
  font-size: var(--font-size-lg);
  color: var(--color-text-tertiary);
  text-decoration: line-through;
}

.product-detail-meta-grid,
.product-detail-content-grid,
.product-detail-shipping-grid,
.product-detail-spec-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-md);
}

.product-detail-meta-grid {
  margin-top: var(--spacing-xl);
}

.product-detail-meta-card,
.product-detail-content-card,
.product-detail-spec-card {
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
}

.product-detail-meta-card strong,
.product-detail-spec-card strong {
  display: block;
  line-height: 1.6;
  color: var(--color-text-primary);
}

.product-detail-meta-label,
.product-detail-spec-label {
  display: block;
  margin-bottom: 6px;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-detail-stock-box {
  background: var(--color-surface);
}

.product-detail-option-header {
  margin-bottom: var(--spacing-sm);
}

.product-detail-quantity-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.product-detail-cta-card {
  margin-top: var(--spacing-xl);
  padding: 0;
  background: none;
}

.product-detail-payment-row {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
}

.product-detail-payment-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.product-detail-trust-grid {
  margin-top: var(--spacing-xl);
}

.product-detail-trust-card {
  flex: 1 1 220px;
}

.product-detail-trust-card strong {
  display: block;
  margin-bottom: 4px;
  color: var(--color-text-primary);
}

.product-detail-tabs {
  margin-top: var(--spacing-2xl);
  overflow: hidden;
}

.product-detail-tab-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--color-border-light);
  background: var(--color-surface);
}

.product-detail-tab-button {
  padding: 16px 20px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-bottom: 2px solid transparent;
}

.product-detail-tab-button:hover {
  color: var(--color-primary);
}

.product-detail-tab-button.is-active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.product-detail-tab-panels {
  padding: var(--spacing-xl);
}

.product-detail-tab-panel:not(.is-active) {
  display: none;
}

.product-detail-content-card h2,
.product-detail-review-empty h2 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
}

.product-detail-content-card p,
.product-detail-review-empty p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.product-detail-bullet-list {
  padding-left: 1.2rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.product-detail-bullet-list li + li {
  margin-top: 8px;
}

.product-detail-tag-list {
  margin-top: var(--spacing-lg);
}

.product-detail-review-empty {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--spacing-2xl);
  text-align: center;
}

.product-detail-review-empty i {
  margin-bottom: var(--spacing-md);
  font-size: 2.25rem;
  color: var(--color-primary);
}

.product-detail-review-empty .btn {
  margin-top: var(--spacing-lg);
}

.product-detail-fixed-summary {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.product-detail-fixed-summary strong {
  font-size: var(--font-size-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-detail-fixed-summary span {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

@media (max-width: 768px) {
  .product-detail-sticky {
    position: static;
  }

  .product-detail-layout,
  .product-detail-meta-grid,
  .product-detail-content-grid,
  .product-detail-shipping-grid,
  .product-detail-spec-grid {
    grid-template-columns: 1fr;
  }

  .product-detail-gallery-card,
  .product-detail-panel,
  .product-detail-tab-panels,
  .product-detail-review-empty {
    padding: var(--spacing-lg);
  }

  .product-detail-title {
    font-size: 1.75rem;
  }

  .product-detail-quantity-row,
  .product-detail-payment-row,
  .product-detail-fixed-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .product-detail-tab-button {
    flex: 1 1 50%;
    text-align: center;
  }

  .fixed-add-to-cart {
    padding-bottom: calc(var(--spacing-md) + env(safe-area-inset-bottom));
    display: none;
  }
}

/* === 折叠面板 === */
.collapsible {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.collapsible-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-surface);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.collapsible-header:hover {
  background: var(--color-bg-secondary);
}

.collapsible-header h4 {
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.collapsible-header i {
  transition: transform var(--transition-fast);
}

.collapsible.open .collapsible-header i {
  transform: rotate(180deg);
}

.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.collapsible.open .collapsible-content {
  max-height: 1000px;
}

.collapsible-body {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

/* === 步骤指示器 === */
.steps {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
}

.steps--compact {
  margin: 0;
  padding: var(--spacing-md) 0;
}

.step {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: grid;
  place-items: center;
  background: var(--color-bg-tertiary);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.step.active .step-number {
  background: var(--color-primary);
  color: white;
}

.step.completed .step-number {
  background: var(--color-success);
  color: white;
}

.step-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
}

.step.active .step-label {
  color: var(--color-text-primary);
}

.step-line {
  flex: 1;
  height: 2px;
  background: var(--color-border);
}

.step.completed + .step .step-line,
.step-line.completed {
  background: var(--color-success);
}

@media (max-width: 768px) {
  .steps {
    flex-direction: column;
    align-items: flex-start;
  }
  .step {
    width: 100%;
  }
  .step-line {
    width: 2px;
    height: 20px;
    margin-left: 18px;
  }
}

/* === 订单状态时间轴 === */
.timeline {
  position: relative;
  padding-left: var(--spacing-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-xl);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -32px;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: var(--color-surface);
  border: 3px solid var(--color-border);
  display: grid;
  place-items: center;
}

.timeline-item.pending .timeline-dot {
  border-color: var(--color-warning);
  background: var(--color-warning-light);
}

.timeline-item.processing .timeline-dot {
  border-color: var(--color-info);
  background: var(--color-info-light);
}

.timeline-item.completed .timeline-dot {
  border-color: var(--color-success);
  background: var(--color-success-light);
}

.timeline-item.completed .timeline-dot i {
  color: var(--color-success);
}

.timeline-content h4 {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
}

.timeline-content p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

.timeline-time {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* === 订单状态徽章 === */
.order-status {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.order-status.pending {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.order-status.processing {
  background: var(--color-info-light);
  color: var(--color-info);
}

.order-status.shipped {
  background: var(--color-info-light);
  color: var(--color-info);
}

.order-status.delivered {
  background: var(--color-success-light);
  color: var(--color-success);
}

.order-status.cancelled {
  background: var(--color-error-light);
  color: var(--color-error);
}

/* === 骨架屏 === */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-secondary) 25%, var(--color-bg-tertiary) 50%, var(--color-bg-secondary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

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

.skeleton-product {
  background: var(--color-surface);
  border-radius: var(--radius-2xl);
  overflow: hidden;
}

.skeleton-product-image {
  aspect-ratio: 4/5;
}

.skeleton-product-info {
  padding: var(--spacing-lg);
}

.skeleton-text {
  height: 16px;
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-sm);
}

.skeleton-text.short {
  width: 40%;
}

.skeleton-text.medium {
  width: 70%;
}

.skeleton-text.long {
  width: 100%;
}

/* === 图片懒加载 === */
img.lazy {
  opacity: 0;
  transition: opacity var(--transition-base);
}

img.lazy.loaded {
  opacity: 1;
}

/* === 面包屑导航 === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

.breadcrumb span {
  color: var(--color-text-muted);
}

/* === 信任标识 === */
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  padding: var(--spacing-xl) 0;
}

.trust-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  text-align: center;
}

.trust-badge i {
  font-size: 2rem;
  color: var(--color-primary);
}

.trust-badge span {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.section-surface {
  background: var(--color-surface);
}

.section-muted {
  background: #F9FAFB;
}

.payment-icons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.checkout-payment-icons {
  margin-top: var(--spacing-sm);
}

.payment-icon {
  width: 48px;
  height: 32px;
  border: 1px solid var(--color-border-light);
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg-secondary) 100%);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  color: var(--color-text-secondary);
}

.payment-icon i {
  font-size: 1.25rem;
}

.payment-icon i.fa-alipay {
  color: var(--color-brand-alipay);
}

.payment-icon i.fa-weixin {
  color: var(--color-brand-wechat);
}

/* === 页面布局增强 === */
.page-content {
  min-height: 70vh;
}

/* === 表格样式 === */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th {
  text-align: left;
  padding: var(--spacing-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--color-border);
}

.table td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
}

.table tr:hover td {
  background: var(--color-bg-secondary);
}

.table-responsive {
  overflow-x: auto;
}

/* === 摘要行 === */
.summary-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
}

.summary-row.total {
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-md);
  border-top: 2px solid var(--color-border);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-xl);
}

/* === 列表页与购物车页重构 === */
.products-page-hero,
.cart-page-hero {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
}

.products-page-breadcrumb,
.cart-page-breadcrumb {
  margin-bottom: var(--spacing-md);
}

.products-page-header,
.cart-page-header,
.products-toolbar,
.products-toolbar-main,
.products-toolbar-side,
.cart-page-header-badge,
.cart-list-head,
.cart-item-top,
.cart-item-subtotal-wrap,
.cart-item-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.products-page-title,
.cart-page-title {
  text-align: left;
  margin-bottom: var(--spacing-sm);
}

.products-page-desc,
.cart-page-desc,
.products-page-card-desc,
.cart-list-head p,
.cart-empty-state p,
.cart-login-banner-desc,
.cart-item-meta-note,
.cart-message {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.products-page-summary,
.cart-page-header-badge {
  min-width: 180px;
  padding: 16px 18px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  text-align: right;
}

.products-page-summary-label,
.cart-page-header-badge span {
  display: block;
  margin-bottom: 4px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.products-page-summary strong,
.cart-page-header-badge strong {
  font-size: 1.125rem;
  color: var(--color-text-primary);
}

.products-toolbar-wrap {
  background: rgba(247, 250, 252, 0.92);
  border-bottom: 1px solid var(--color-border-light);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 40;
}

.products-toolbar {
  padding: 16px 0;
}

.products-toolbar-main {
  flex: 1;
  flex-wrap: wrap;
}

.products-toolbar-side {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.products-toolbar-label,
.products-sort-select label,
.cart-item-quantity-label {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.products-filter-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.products-toolbar-status {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  min-width: 132px;
}

.products-toolbar-status span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.products-toolbar-status strong {
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}

.products-sort-select {
  display: flex;
  align-items: center;
  gap: 10px;
}

.products-sort-control {
  min-width: 190px;
  padding: 10px 14px;
  border: 1px solid var(--color-border-light);
  border-radius: 4px;
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
}

.products-sort-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(42, 67, 101, 0.14);
}

.products-page-section {
  padding-top: var(--spacing-xl);
}

.products-page-card {
  height: 100%;
}

.products-page-card-desc {
  min-height: 3.2em;
  font-size: var(--font-size-sm);
}

.product-card-actions--equal .btn {
  flex: 1;
}

.products-page-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--color-accent);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
}

.products-empty-state,
.cart-empty-state {
  padding: var(--spacing-4xl) 0;
  text-align: center;
}

.products-empty-state i,
.cart-empty-state i {
  display: block;
  margin-bottom: var(--spacing-lg);
  font-size: 3.5rem;
  color: var(--color-text-soft);
}

.products-empty-state h2,
.cart-empty-state h2 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.5rem;
}

.products-empty-state p,
.cart-empty-state p {
  max-width: 560px;
  margin: 0 auto var(--spacing-xl);
}

.cart-page-section {
  background: linear-gradient(180deg, rgba(42, 67, 101, 0.02) 0%, transparent 100%);
}

.cart-login-banner,
.cart-summary,
.cart-item,
.cart-list-head {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.cart-login-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
}

.cart-login-banner-title {
  margin-bottom: 6px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.cart-page-grid {
  gap: var(--spacing-2xl);
  align-items: start;
}

.cart-main-column {
  min-width: 0;
}

.cart-list-head {
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.cart-list-head h2,
.cart-summary-title {
  margin-bottom: 6px;
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.cart-summary-title-spaced {
  margin-bottom: var(--spacing-lg);
}

.cart-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.cart-item {
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
}

.cart-item-image {
  display: block;
  width: 120px;
  height: 120px;
  flex-shrink: 0;
  overflow: hidden;
  border-radius: 8px;
  background: var(--color-bg-secondary);
}

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

.cart-item-details {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.cart-item-top {
  align-items: flex-start;
}

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

.cart-item-name {
  margin: 4px 0 8px;
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
}

.cart-item-name a {
  color: inherit;
}

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

.cart-item-unit-price,
.cart-item-meta-note {
  font-size: var(--font-size-sm);
}

.cart-item-subtotal-wrap {
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
}

.cart-item-subtotal {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.cart-item-remove {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  background: transparent;
  border: none;
  padding: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-decoration: underline;
  cursor: pointer;
}

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

.cart-item-quantity-block {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quantity-selector {
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.qty-btn:hover {
  background: var(--color-bg-primary);
  color: var(--color-primary);
}

.qty-input {
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
}

.cart-summary {
  position: sticky;
  top: 110px;
  padding: var(--spacing-xl);
}

.cart-summary-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.cart-summary-actions .btn {
  width: 100%;
}

.cart-summary-trust {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
}

.cart-summary-trust-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.cart-summary-trust-item i {
  margin-top: 2px;
  color: var(--color-primary);
}

.checkout-page-hero {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.checkout-page-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.checkout-page-title {
  text-align: left;
  margin-bottom: 0;
}

.checkout-progress {
  background: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
}

.checkout-alert {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-lg);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
}

.checkout-alert-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
}

.checkout-order-reference {
  margin-bottom: var(--spacing-md);
}

.checkout-order-reference-label {
  font-weight: var(--font-weight-medium);
}

.checkout-order-link {
  margin-top: var(--spacing-md);
}

.checkout-breadcrumb {
  margin-bottom: var(--spacing-md);
}

.checkout-alert.is-error {
  border-color: rgba(197, 48, 48, 0.2);
  background: rgba(229, 62, 62, 0.08);
  color: #C53030;
}

.checkout-alert-extra-note {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px dashed rgba(197, 48, 48, 0.22);
  color: #742A2A;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1.75;
}

.checkout-alert.is-success {
  border-color: rgba(86, 118, 94, 0.25);
  background: rgba(86, 118, 94, 0.08);
  color: #56765E;
}

.checkout-empty-state,
.checkout-login-card {
  max-width: 760px;
  margin: 0 auto;
  padding: var(--spacing-2xl);
  text-align: center;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
}

.checkout-empty-state i {
  font-size: 4rem;
  color: var(--color-text-soft);
  margin-bottom: var(--spacing-lg);
}

.checkout-empty-state h3,
.checkout-login-card h2 {
  margin-bottom: var(--spacing-sm);
}

.checkout-empty-state p,
.checkout-login-card p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
}

.checkout-login-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.checkout-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.checkout-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.checkout-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-soft);
}

.checkout-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.checkout-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin: 0;
}

.checkout-card-title-spaced {
  margin-bottom: var(--spacing-lg);
}

.checkout-payment-stack {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.is-hidden-input {
  display: none !important;
}

.product-detail-breadcrumb-section {
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-sm);
}

.product-detail-main-section {
  padding-top: 0;
}

.checkout-grid-two,
.checkout-grid-three {
  display: grid;
  gap: var(--spacing-md);
}

.checkout-grid-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.checkout-grid-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.checkout-stack {
  margin-top: var(--spacing-md);
}

.checkout-payment-card {
  display: flex;
  gap: var(--spacing-md);
  padding: calc(var(--spacing-lg) + 2px);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--color-surface-2) 0%, var(--color-surface) 55%, var(--color-surface-3) 100%);
  box-shadow: var(--shadow-soft);
  position: relative;
  overflow: hidden;
}

.checkout-payment-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: var(--color-brand-gradient);
}

.checkout-payment-copy {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  flex: 1;
}

.checkout-payment-title {
  font-weight: var(--font-weight-semibold);
}

.checkout-payment-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.checkout-payment-mode {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin-top: var(--spacing-sm);
  padding: 0 12px;
  border-radius: 999px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.checkout-payment-mode.is-test {
  background: rgba(49, 130, 206, 0.12);
  color: #2B6CB0;
}

.checkout-payment-mode.is-live {
  background: rgba(47, 133, 90, 0.12);
  color: #2F855A;
}

.checkout-payment-disabled-note {
  margin-top: var(--spacing-sm);
  color: #C53030;
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.checkout-payment-warning {
  margin-top: var(--spacing-md);
  padding: 14px 16px;
  border: 1px solid rgba(183, 121, 31, 0.32);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255, 244, 214, 0.96) 0%, rgba(255, 250, 235, 0.98) 100%);
  box-shadow: 0 6px 16px rgba(183, 121, 31, 0.10);
}

.checkout-payment-warning-title {
  display: block;
  margin-bottom: 6px;
  color: #8c4f08;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: 1.5;
}

.checkout-payment-warning-text {
  margin: 0;
  color: #5f370e;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1.75;
}

.checkout-payment-options {
  display: grid;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.checkout-payment-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  min-height: 64px;
  padding: 14px 16px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.85);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
  cursor: pointer;
}

.checkout-payment-option:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-soft-sm);
  transform: translateY(-1px);
}

.checkout-payment-option.is-selected {
  border-color: rgba(26, 54, 93, 0.35);
  background: var(--color-primary-soft);
  box-shadow: 0 0 0 3px rgba(42, 67, 101, 0.10);
}

.checkout-payment-option:focus-within {
  border-color: rgba(26, 54, 93, 0.45);
  box-shadow: 0 0 0 4px rgba(42, 67, 101, 0.14);
}

.checkout-payment-option input {
  margin-top: 0;
  flex-shrink: 0;
}

.checkout-payment-option-copy {
  display: grid;
  gap: 2px;
}

.checkout-payment-option-copy strong {
  color: var(--color-text-primary);
}

.checkout-payment-option-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.checkout-payment-option-title i {
  width: 34px;
  height: 34px;
  display: inline-grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--color-border-light);
  background: rgba(42, 67, 101, 0.06);
  font-size: 1rem;
}

.checkout-payment-option-title--card {
  gap: 10px;
}

.checkout-payment-card-brands {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.checkout-payment-card-brand {
  font-size: 1.15rem;
}

.checkout-payment-card-brand--visa {
  color: #1a1f71;
}

.checkout-payment-card-brand--mastercard {
  color: #eb001b;
}

.checkout-payment-card-brand--amex {
  color: #2e77bb;
}

.checkout-payment-option-title--alipay i {
  color: var(--color-brand-alipay);
  background: rgba(22, 119, 255, 0.10);
  border-color: rgba(22, 119, 255, 0.22);
}

.checkout-payment-option-title--wechat i {
  color: var(--color-brand-wechat);
  background: rgba(7, 193, 96, 0.10);
  border-color: rgba(7, 193, 96, 0.22);
}

.checkout-payment-option-copy small {
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.checkout-payment-security-note {
  margin-top: var(--spacing-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.checkout-autofill-btn {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), color var(--transition-fast);
}

.checkout-autofill-btn:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.checkout-autofill-btn.is-pressed {
  transform: scale(0.97);
}

.checkout-autofill-btn.is-complete {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #ffffff;
}

.checkout-submit-btn {
  width: 100%;
  margin-top: var(--spacing-lg);
}

.checkout-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

@media (max-width: 767px) {
  .checkout-payment-option {
    min-height: 64px;
  }

  .checkout-payment-warning {
    padding: 12px 14px;
  }
}

.pay-flow-card {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--spacing-2xl);
  background: linear-gradient(180deg, var(--color-surface-2) 0%, var(--color-surface) 55%, var(--color-surface-3) 100%);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft-lg);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.pay-flow-card::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 4px;
  background: var(--color-brand-gradient);
}

.pay-flow-title {
  margin: 0 0 var(--spacing-lg);
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  line-height: 1.25;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.pay-status {
  margin: 0 0 var(--spacing-xl);
}

.pay-status-text {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border-light);
  background: rgba(255, 255, 255, 0.85);
  color: var(--color-text-primary);
}

.pay-status-text.is-info {
  border-color: rgba(42, 67, 101, 0.22);
  background: rgba(42, 67, 101, 0.08);
  color: var(--color-primary-dark);
}

.pay-status-text.is-success {
  border-color: rgba(47, 133, 90, 0.25);
  background: rgba(47, 133, 90, 0.10);
  color: #2F855A;
}

.pay-status-text.is-error {
  border-color: rgba(197, 48, 48, 0.25);
  background: rgba(197, 48, 48, 0.10);
  color: #C53030;
}

.pay-qr-card {
  padding: var(--spacing-2xl);
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
}

.pay-qr-container {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.pay-qr-img {
  width: 256px;
  height: 256px;
  display: none;
  border-radius: 16px;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-secondary);
}

.pay-qr-hint {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.pay-scan-warning {
  margin-top: var(--spacing-lg);
  padding: 16px 18px;
  border: 1px solid rgba(197, 48, 48, 0.24);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(254, 226, 226, 0.94) 0%, rgba(255, 245, 245, 0.98) 100%);
  box-shadow: 0 6px 18px rgba(197, 48, 48, 0.10);
  text-align: left;
}

.pay-scan-warning-title {
  display: block;
  margin-bottom: 8px;
  color: #9b2c2c;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: 1.5;
}

.pay-scan-warning-text {
  margin: 0;
  color: #742a2a;
  font-size: clamp(0.95rem, 1.8vw, 1rem);
  font-weight: var(--font-weight-bold);
  line-height: 1.8;
}

.pay-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
}

.pay-order-card {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-xl);
  background: rgba(42, 67, 101, 0.05);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  text-align: left;
}

.pay-order-title {
  margin: 0 0 var(--spacing-md);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.pay-order-grid {
  display: grid;
  gap: var(--spacing-sm);
}

.pay-order-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.pay-order-label {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.pay-order-value {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

@media (max-width: 768px) {
  .pay-flow-card {
    padding: var(--spacing-xl);
  }

  .pay-qr-card {
    padding: var(--spacing-xl);
  }

  .pay-scan-warning {
    padding: 14px 16px;
    text-align: left;
  }

  .pay-qr-img {
    width: 220px;
    height: 220px;
  }

  .pay-order-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

.checkout-summary-card {
  position: sticky;
  top: 100px;
}

.checkout-summary-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.checkout-summary-item {
  display: flex;
  gap: var(--spacing-md);
}

.checkout-summary-thumb {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-secondary);
  flex-shrink: 0;
}

.checkout-summary-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.checkout-summary-copy {
  min-width: 0;
  flex: 1;
}

.checkout-summary-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.checkout-summary-qty {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.checkout-summary-price {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.faq-preview {
  max-width: 800px;
  margin: 0 auto;
}

.faq-preview-group {
  margin-bottom: 20px;
}

.faq-preview .faq-item {
  background: #FFFFFF;
  border-radius: 8px;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-soft-sm);
}

.faq-preview-cta {
  text-align: center;
  margin-top: 30px;
}

.faq-preview-cta i {
  margin-left: 8px;
}

.product-detail-cta-card .btn {
  flex: 1;
  min-width: 200px;
}

.product-detail-fixed-actions {
  padding: 0;
  background: none;
  display: flex;
  gap: var(--spacing-md);
}

.product-detail-fixed-actions .btn {
  flex: 1;
}

.product-detail-related-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.cart-message {
  margin-top: var(--spacing-lg);
  padding: 12px 14px;
  border-radius: 8px;
  background: rgba(42, 67, 101, 0.06);
  display: none;
}

.cart-mobile-summary-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.cart-mobile-summary-copy span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.cart-mobile-summary-copy strong {
  color: var(--color-text-primary);
  font-size: 1.125rem;
}

/* === 内容页体系 === */
.content-page-hero {
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
  background:
    linear-gradient(180deg, rgba(42, 67, 101, 0.05) 0%, rgba(42, 67, 101, 0.015) 100%),
    var(--color-surface);
  border-bottom: 1px solid var(--color-border-light);
}

.content-page-hero .breadcrumb {
  margin-bottom: var(--spacing-md);
}

.content-page-hero-grid,
.content-page-hero-compact,
.content-layout,
.content-card-grid,
.contact-layout,
.contact-info-grid,
.about-stats-grid,
.faq-category-head,
.policy-highlight-grid {
  display: grid;
  gap: var(--spacing-xl);
}

.content-page-hero-grid {
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  align-items: end;
}

.content-page-hero-compact {
  max-width: 880px;
}

.content-page-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.content-page-title {
  margin: 0 0 var(--spacing-sm);
  font-size: clamp(2.1rem, 4vw, 3rem);
  line-height: 1.2;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.content-page-desc {
  max-width: 760px;
  margin: 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.75;
}

.content-page-sidecard,
.content-block,
.content-card,
.contact-card,
.policy-meta-card,
.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.content-page-sidecard,
.content-block,
.contact-card,
.policy-meta-card {
  padding: var(--spacing-xl);
}

.content-page-sidecard {
  align-self: stretch;
}

.content-page-sidecard-label {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.content-page-sidecard strong {
  display: block;
  color: var(--color-text-primary);
  font-size: 1.125rem;
  line-height: 1.5;
}

.content-page-sidecard p {
  margin-top: 8px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.content-layout {
  grid-template-columns: minmax(0, 1fr);
}

.content-layout-narrow {
  max-width: 900px;
  margin: 0 auto;
}

.content-section-header {
  margin-bottom: var(--spacing-xl);
}

.content-section-title {
  margin: 0 0 8px;
  font-size: 1.75rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.content-section-desc {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.content-block h2,
.content-block h3,
.content-card h3,
.policy-section h2,
.faq-category-title {
  color: var(--color-text-primary);
}

.content-block h2,
.policy-section h2 {
  margin: 0 0 var(--spacing-md);
  font-size: 1.375rem;
  font-weight: var(--font-weight-semibold);
}

.content-block h3,
.content-card h3 {
  margin: 0 0 10px;
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
}

.content-block p,
.content-block li,
.content-card p,
.contact-card p,
.policy-section p,
.policy-section li,
.faq-answer p {
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.content-block p:last-child,
.content-card p:last-child,
.policy-section p:last-child,
.faq-answer p:last-child {
  margin-bottom: 0;
}

.content-block ul,
.content-block ol,
.policy-section ul,
.policy-section ol {
  margin: 0;
  padding-left: 1.25rem;
}

.content-block li + li,
.policy-section li + li {
  margin-top: 8px;
}

.content-card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.content-card {
  padding: var(--spacing-xl);
}

.content-card-icon,
.contact-card-icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: rgba(42, 67, 101, 0.08);
  color: var(--color-primary);
  font-size: 1.25rem;
}

.content-card-meta {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.about-stats-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.about-stat-card {
  padding: 18px 20px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
}

.about-stat-card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.5rem;
  color: var(--color-text-primary);
}

.about-stat-card span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.content-callout {
  padding: var(--spacing-2xl);
  background: var(--color-primary);
  border-radius: 8px;
  color: #ffffff;
}

.content-callout h2,
.content-callout p {
  color: inherit;
}

.content-callout p {
  opacity: 0.9;
}

.content-callout .btn {
  margin-top: var(--spacing-lg);
}

.contact-layout {
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  align-items: start;
}

.contact-form-shell,
.contact-sidebar-shell {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
  padding: var(--spacing-xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-form label {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.contact-info-grid {
  grid-template-columns: 1fr;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.contact-card-copy h3 {
  margin: 0 0 8px;
}

.contact-card-copy p {
  margin: 0;
}

.contact-card-copy p + p {
  margin-top: 4px;
}

.contact-social-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: var(--spacing-lg);
}

.contact-social-link {
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  color: var(--color-text-secondary);
  background: var(--color-surface);
}

.contact-social-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-bg-primary);
}

.content-inline-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.content-inline-actions .btn {
  min-width: 180px;
}

.contact-support-grid,
.contact-shortcuts,
.tracking-grid,
.tracking-meta-grid,
.tracking-detail-grid,
.tracking-help-list,
.tracking-form-grid,
.faq-quick-links {
  display: grid;
  gap: var(--spacing-md);
}

.contact-support-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: var(--spacing-lg);
}

.contact-support-card {
  padding: var(--spacing-lg);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
}

.contact-support-card strong,
.tracking-help-list strong {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text-primary);
  font-size: 1rem;
}

.contact-support-card p,
.tracking-help-list span {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.contact-shortcuts {
  margin-top: var(--spacing-lg);
}

.contact-shortcut-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  min-height: 56px;
  padding: 14px 16px;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
}

.contact-shortcut-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: #ffffff;
}

.contact-contact-link {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.contact-contact-link:hover {
  color: var(--color-primary);
}

.faq-quick-links {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: var(--spacing-xl);
}

.faq-quick-link {
  padding: var(--spacing-lg);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  color: var(--color-text-primary);
}

.faq-quick-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: #ffffff;
}

.faq-quick-link strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
}

.faq-quick-link span {
  display: block;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.faq-cta-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.tracking-shell {
  max-width: 1080px;
  margin: 0 auto;
}

.tracking-grid {
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  align-items: start;
}

.tracking-form-card,
.tracking-result-card,
.tracking-help-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
  padding: var(--spacing-xl);
}

.tracking-form-grid {
  margin-top: var(--spacing-lg);
}

.tracking-form-grid .form-group {
  margin: 0;
}

.tracking-submit-btn {
  width: 100%;
}

.tracking-alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-lg);
  border-radius: 8px;
  border: 1px solid rgba(220, 38, 38, 0.16);
  background: rgba(254, 242, 242, 0.9);
  color: #dc2626;
}

.tracking-result-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.tracking-order-number {
  margin: 6px 0 0;
  font-size: 1.375rem;
  font-weight: var(--font-weight-semibold);
}

.tracking-status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: #ffffff;
}

.tracking-status-pill--pending {
  background: #D69E2E;
}

.tracking-status-pill--paid {
  background: #2F855A;
}

.tracking-status-pill--processing {
  background: #805AD5;
}

.tracking-status-pill--shipped {
  background: #3182CE;
}

.tracking-status-pill--transit {
  background: #2B6CB0;
}

.tracking-status-pill--delivered {
  background: #2F855A;
}

.tracking-status-pill--cancelled {
  background: #C53030;
}

.tracking-meta-grid,
.tracking-detail-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-bottom: var(--spacing-lg);
}

.tracking-info-card,
.tracking-address-card,
.tracking-items-card,
.tracking-logistics-card,
.tracking-help-list {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
}

.tracking-info-card,
.tracking-address-card,
.tracking-items-card,
.tracking-logistics-card {
  padding: var(--spacing-lg);
}

.tracking-info-card strong,
.tracking-address-card h3,
.tracking-items-card h3,
.tracking-logistics-card h3,
.tracking-help-card h2 {
  color: var(--color-text-primary);
}

.tracking-info-label {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.tracking-info-value {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.tracking-address-card address {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.8;
  font-style: normal;
}

.tracking-items-list {
  gap: 0;
  margin-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

.tracking-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.tracking-item-row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.tracking-item-meta {
  min-width: 0;
}

.tracking-item-meta strong {
  display: block;
  margin-bottom: 4px;
  color: var(--color-text-primary);
}

.tracking-item-meta span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.tracking-item-total {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

.tracking-logistics-list {
  display: grid;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.tracking-logistics-row {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border-light);
}

.tracking-logistics-row span,
.tracking-logistics-note span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.tracking-logistics-row strong {
  color: var(--color-text-primary);
  text-align: right;
}

.tracking-logistics-note {
  padding-top: var(--spacing-sm);
}

.tracking-logistics-note p {
  margin: 6px 0 0;
  color: var(--color-text-primary);
  line-height: 1.7;
}

.tracking-help-card {
  display: grid;
  gap: var(--spacing-lg);
}

.tracking-help-card p {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.tracking-help-list {
  padding: var(--spacing-lg);
}

.tracking-help-item + .tracking-help-item {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

.tracking-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.cart-mobile-summary-bar {
  display: none;
}

.policy-shell {
  max-width: 920px;
  margin: 0 auto;
}

.policy-meta-card {
  margin-bottom: var(--spacing-xl);
}

.policy-meta-card p {
  margin: 0;
  color: var(--color-text-secondary);
}

.policy-highlight-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: var(--spacing-xl);
}

.policy-highlight-card {
  padding: 18px 20px;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
}

.policy-highlight-card strong {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text-primary);
  font-size: 1rem;
}

.policy-highlight-card span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.policy-document {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
  padding: var(--spacing-2xl);
}

.policy-section + .policy-section {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-light);
}

.policy-contact-box {
  margin-top: var(--spacing-2xl);
}

.policy-layout {
  display: grid;
  grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
  gap: var(--spacing-xl);
  align-items: start;
}

.policy-anchor-card,
.account-summary-card,
.account-order-status-card,
.account-address-card,
.account-items-card,
.account-profile-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  box-shadow: var(--shadow-soft);
}

.policy-anchor-card {
  padding: var(--spacing-lg);
}

.policy-anchor-title {
  margin: 0 0 var(--spacing-sm);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.policy-anchor-meta {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
}

.policy-anchor-meta p {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.policy-anchor-links {
  display: grid;
  gap: 10px;
  margin-top: var(--spacing-md);
}

.policy-anchor-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 14px;
  border-radius: 8px;
  color: var(--color-text-primary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
}

.policy-anchor-links a:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: #ffffff;
}

.policy-section {
  scroll-margin-top: 120px;
}

.policy-contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-md);
}

.policy-contact-grid p {
  margin: 0;
}

.policy-contact-grid strong {
  display: block;
  margin-bottom: 6px;
}

.policy-related-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.account-shell {
  display: grid;
  gap: var(--spacing-xl);
}

.account-summary-grid,
.account-order-meta-grid,
.account-order-detail-grid {
  display: grid;
  gap: var(--spacing-md);
}

.account-summary-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.account-summary-card {
  padding: var(--spacing-xl);
}

.account-summary-label {
  display: block;
  margin-bottom: 8px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.account-summary-value {
  margin: 0 0 6px;
  color: var(--color-text-primary);
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
}

.account-summary-desc {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.account-status-note {
  margin-top: 12px;
}

.account-action-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.account-inline-form {
  display: inline-flex;
}

.account-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.account-section-head h2 {
  margin-bottom: 0;
}

.account-section-meta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--color-border-light);
  background: rgba(42, 67, 101, 0.06);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.account-order-empty {
  padding: var(--spacing-2xl) 0;
}

.account-order-list {
  display: grid;
  gap: var(--spacing-md);
}

.account-order-card {
  display: block;
  padding: var(--spacing-lg);
  border-radius: 10px;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-primary);
  text-decoration: none;
  color: inherit;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}

.account-order-card:hover {
  border-color: var(--color-border);
  box-shadow: var(--shadow-soft);
}

.account-order-card:focus-visible {
  outline: 3px solid rgba(42, 67, 101, 0.25);
  outline-offset: 2px;
}

.account-order-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.account-order-card-no {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--color-text-primary);
  font-size: 1.05rem;
  font-weight: var(--font-weight-semibold);
}

.account-order-card-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-md);
}

.account-order-card-meta-item {
  min-width: 0;
}

.account-order-card-label {
  display: block;
  margin-bottom: 6px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.account-order-card-meta-item strong {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
}

@media (max-width: 1024px) {
  .account-order-card-meta {
    grid-template-columns: 1fr;
  }
}

.account-order-status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}

.account-order-status-pill.pending {
  background: rgba(214, 158, 46, 0.14);
  color: #975A16;
}

.account-order-status-pill.paid {
  background: rgba(47, 133, 90, 0.12);
  color: #2F855A;
}

.account-order-status-pill.shipped,
.account-order-status-pill.completed,
.account-order-status-pill.delivered {
  background: rgba(47, 133, 90, 0.12);
  color: #2F855A;
}

.account-order-status-pill.cancelled {
  background: rgba(197, 48, 48, 0.12);
  color: #C53030;
}

.account-table {
  min-width: 720px;
}

.account-order-meta-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.account-order-status-card,
.account-address-card,
.account-items-card {
  padding: var(--spacing-xl);
}

.account-profile-card {
  padding: var(--spacing-xl);
}

.account-profile-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-md);
}

.account-profile-card-head h3 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.account-profile-card-sub {
  display: block;
  margin-top: 6px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.account-profile-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.account-profile-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: var(--spacing-md);
}

.account-order-detail-grid {
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
}

.account-order-logistics-grid {
  margin-top: var(--spacing-md);
}

.account-order-address {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.8;
  font-style: normal;
}

.account-items-list {
  display: grid;
  gap: var(--spacing-md);
}

.account-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border-light);
}

.account-item-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.account-item-copy {
  min-width: 0;
}

.account-item-copy strong {
  display: block;
  margin-bottom: 4px;
  color: var(--color-text-primary);
}

.account-item-copy span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.account-item-total {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-semibold);
  white-space: nowrap;
}

.order-items-table {
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  background: #ffffff;
  overflow-x: auto;
}

.order-items-head,
.order-items-row {
  display: grid;
  grid-template-columns: minmax(240px, 2fr) minmax(240px, 2fr) 80px 120px 120px;
  gap: var(--spacing-md);
  align-items: center;
  padding: 12px 14px;
  min-width: 780px;
}

.order-items-head {
  background: var(--color-bg-primary);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.order-items-row {
  border-top: 1px solid var(--color-border-light);
}

.order-items-col {
  min-width: 0;
}

.order-items-col--qty,
.order-items-col--price,
.order-items-col--subtotal {
  text-align: right;
  white-space: nowrap;
}

.order-item-name {
  display: block;
  color: var(--color-text-primary);
}

.order-item-sku {
  margin-top: 4px;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.account-logistics-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.account-logistics-meta {
  display: grid;
  gap: 10px;
  margin-top: var(--spacing-lg);
}

.account-logistics-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.account-logistics-meta-row span {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.account-logistics-empty {
  margin-top: var(--spacing-lg);
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px dashed var(--color-border-light);
  background: var(--color-bg-primary);
  color: var(--color-text-secondary);
}

.account-logistics-note {
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border-light);
}

.account-logistics-note span {
  display: block;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  margin-bottom: 8px;
}

.account-logistics-note p {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.logistics-timeline {
  margin-top: var(--spacing-lg);
  display: grid;
  gap: 12px;
}

.logistics-node {
  display: grid;
  grid-template-columns: 170px minmax(0, 1fr);
  gap: var(--spacing-md);
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg-primary);
}

.logistics-node-time {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.logistics-node-location {
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 4px;
}

.logistics-node-event {
  color: var(--color-text-secondary);
  line-height: 1.7;
  word-break: break-word;
}

.logistics-timeline--compact .logistics-node {
  grid-template-columns: 150px minmax(0, 1fr);
  padding: 10px 12px;
}

.faq-shell {
  max-width: 980px;
  margin: 0 auto;
}

.faq-category + .faq-category {
  margin-top: var(--spacing-2xl);
}

.faq-category-head {
  grid-template-columns: minmax(0, 1fr);
  margin-bottom: var(--spacing-md);
}

.faq-category-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: var(--font-weight-semibold);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  overflow: hidden;
}

.faq-question {
  width: 100%;
  min-height: 56px;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  text-align: left;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
}

.faq-question i {
  color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
  padding: 0 22px;
}

.faq-answer p {
  padding-bottom: 18px;
}

.faq-cta-box {
  margin-top: var(--spacing-2xl);
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-radius: 8px;
  color: #ffffff;
  text-align: center;
}

.faq-cta-box h3,
.faq-cta-box p {
  color: inherit;
}

.faq-cta-box p {
  opacity: 0.9;
}

@media (max-width: 1024px) {
  .content-page-hero-grid,
  .contact-layout,
  .content-card-grid,
  .about-stats-grid,
  .policy-highlight-grid,
  .contact-support-grid,
  .faq-quick-links,
  .tracking-grid,
  .tracking-meta-grid,
  .tracking-detail-grid,
  .policy-layout,
  .policy-contact-grid,
  .account-summary-grid,
  .account-order-meta-grid,
  .account-order-detail-grid,
  .account-profile-grid,
  .account-profile-fields {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .content-page-hero,
  .policy-document,
  .content-page-sidecard,
  .content-block,
  .content-card,
  .contact-form-shell,
  .contact-sidebar-shell,
  .policy-meta-card,
  .faq-cta-box {
    padding: var(--spacing-lg);
  }

  .content-page-title {
    font-size: 2rem;
  }

  .contact-card,
  .cart-login-banner,
  .products-page-header,
  .cart-page-header,
  .tracking-result-top,
  .tracking-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .products-page-summary,
  .cart-page-header-badge {
    min-width: 0;
    width: 100%;
    text-align: left;
  }

  .products-toolbar,
  .products-toolbar-main,
  .products-toolbar-side,
  .products-sort-select {
    display: flex;
    flex-direction: column;
    align-items: stretch;
  }

  .products-toolbar-status {
    align-items: flex-start;
  }

  .products-sort-control {
    width: 100%;
    min-width: 0;
  }

  .content-inline-actions .btn,
  .faq-cta-actions .btn,
  .tracking-actions .btn,
  .policy-related-links .btn,
  .account-action-row .btn,
  .account-inline-form,
  .account-inline-form .btn,
  .account-profile-actions .btn {
    width: 100%;
    min-width: 0;
  }

  .logistics-node {
    grid-template-columns: 1fr;
  }

  .cart-page-grid {
    padding-bottom: 92px;
  }

  .cart-mobile-summary-bar {
    position: fixed;
    left: 12px;
    right: 12px;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 12px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    box-shadow: var(--shadow-soft-lg);
    z-index: 1100;
  }

  .cart-mobile-summary-bar .btn {
    flex-shrink: 0;
    min-width: 140px;
  }
}

/* === 锚点导航 === */
.anchor-nav {
  position: sticky;
  top: 100px;
  align-self: start;
}

.anchor-nav a {
  display: block;
  padding: var(--spacing-sm) 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  border-left: 2px solid transparent;
  padding-left: var(--spacing-md);
  margin-left: calc(-1 * var(--spacing-md));
  transition: all var(--transition-fast);
}

.anchor-nav a:hover,
.anchor-nav a.active {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}

/* === 加载动画 === */
.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

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

.btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.btn.is-loading {
  pointer-events: none;
  opacity: 0.82;
  transform: none;
}

.btn.loading .btn-text {
  visibility: hidden;
}

.btn.loading .loading-spinner {
  position: absolute;
}

.btn.is-loading .loading-spinner {
  width: 18px;
  height: 18px;
  border-width: 2px;
}

.page-overlay {
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 2000;
}

.page-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

.page-overlay-card {
  width: min(100%, 460px);
  background: var(--color-surface);
  border: 1px solid rgba(179, 146, 110, 0.18);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-2xl);
  text-align: center;
  box-shadow: var(--shadow-soft-xl);
}

.page-overlay-card .loading-spinner {
  width: 42px;
  height: 42px;
  margin: 0 auto var(--spacing-lg);
  border-width: 3px;
}

.page-overlay-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.page-overlay-desc {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.not-found-page,
.redirect-page {
  min-height: calc(100vh - 220px);
  display: flex;
  align-items: center;
}

.not-found-card,
.redirect-card {
  width: min(100%, 760px);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4rem);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow-soft-lg);
  text-align: center;
}

.not-found-code {
  font-family: var(--font-heading);
  font-size: clamp(4rem, 12vw, 7rem);
  line-height: 1;
  color: var(--color-accent);
  margin-bottom: var(--spacing-md);
}

.not-found-title,
.redirect-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: var(--spacing-md);
}

.not-found-desc,
.redirect-desc {
  max-width: 560px;
  margin: 0 auto var(--spacing-xl);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.redirect-shell {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
}

.redirect-shell--narrow {
  max-width: 600px;
}

.redirect-icon-circle {
  width: 84px;
  height: 84px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  border-radius: 50%;
}

.redirect-icon-circle--success {
  background: #10b981;
}

.redirect-icon-circle--warning {
  background: #f59e0b;
}

.redirect-icon {
  font-size: 2rem;
  color: #ffffff;
}

.redirect-head {
  margin-bottom: var(--spacing-xl);
}

.redirect-info-card {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-xl);
  text-align: left;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.redirect-info-title {
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

.redirect-info-list {
  display: grid;
  gap: var(--spacing-md);
}

.redirect-info-row {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.redirect-info-row--total {
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--color-border);
}

.redirect-info-label {
  color: var(--color-text-muted);
}

.redirect-info-total {
  font-size: var(--font-size-xl);
}

.redirect-warning-note {
  margin: 0 auto var(--spacing-xl);
  max-width: 560px;
  padding: var(--spacing-lg);
  text-align: left;
  border: 1px solid rgba(197, 48, 48, 0.22);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255, 245, 245, 0.98) 0%, rgba(254, 226, 226, 0.92) 100%);
  box-shadow: 0 8px 20px rgba(197, 48, 48, 0.08);
}

.redirect-warning-note__title {
  display: block;
  margin-bottom: 8px;
  color: #9B2C2C;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  line-height: 1.5;
}

.redirect-warning-note__text {
  margin: 0;
  color: #742A2A;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  line-height: 1.8;
}

.redirect-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.redirect-progress {
  width: min(100%, 360px);
  height: 10px;
  margin: 0 auto var(--spacing-lg);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.redirect-progress-bar {
  width: 100%;
  height: 100%;
  background: var(--color-accent-gradient);
  transform-origin: left center;
  animation: redirect-progress 2s linear forwards;
}

@keyframes redirect-progress {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

.stock-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.9rem;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

.stock-pill.in-stock {
  background: var(--color-success-light);
  color: var(--color-success);
}

.stock-pill.low-stock {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.stock-pill.sold-out {
  background: var(--color-error-light);
  color: var(--color-error);
}

.stock-note {
  margin-top: var(--spacing-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.gallery-main {
  cursor: zoom-in;
}

.gallery-zoom-hint {
  position: absolute;
  right: var(--spacing-md);
  bottom: var(--spacing-md);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-full);
  background: rgba(17, 17, 17, 0.68);
  color: #ffffff;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  pointer-events: none;
}

.image-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(17, 17, 17, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1600;
}

.image-lightbox.is-open {
  opacity: 1;
  visibility: visible;
}

.image-lightbox img {
  max-width: min(92vw, 1200px);
  max-height: 85vh;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft-xl);
}

.image-lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.14);
  color: #ffffff;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}

/* === 搜索下拉 === */
.search-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft-lg);
  margin-top: var(--spacing-sm);
  overflow: hidden;
  display: none;
  z-index: 100;
}

.search-dropdown.show {
  display: block;
}

.search-suggestion {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-suggestion:hover {
  background: var(--color-bg-secondary);
}

.search-suggestion img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

/* === 购物车条目动画 === */
.cart-item {
  transition: all var(--transition-base);
}

.cart-item.removing {
  opacity: 0;
  transform: translateX(100px);
}

/* === 数量选择器 === */
.quantity-selector {
  display: flex;
  align-items: center;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--color-surface);
}

.qty-btn {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  background: var(--color-surface);
  border: none;
  cursor: pointer;
  color: var(--color-text-primary);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.qty-btn:hover {
  background: var(--color-bg-secondary);
  color: var(--color-accent);
}

.qty-input {
  width: 60px;
  height: 48px;
  border: none;
  text-align: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  background: transparent;
}

.qty-input::-webkit-outer-spin-button,
.qty-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.qty-input[type=number] {
  -moz-appearance: textfield;
}

/* ============================================
   LIVE CHAT WIDGET
   ============================================ */

.chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
}

.chat-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 20px rgba(42, 67, 101, 0.22);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  transition: all var(--transition-base);
}

.chat-toggle:hover {
  transform: scale(1.1);
  box-shadow: 0 10px 24px rgba(42, 67, 101, 0.28);
}

.chat-toggle i {
  transition: transform var(--transition-base);
}

.chat-widget.open .chat-toggle i:first-child {
  transform: rotate(90deg) scale(0);
}

.chat-widget.open .chat-toggle i:last-child {
  transform: scale(1);
}

.chat-toggle i:last-child {
  position: absolute;
  transform: scale(0);
}

.chat-window {
  position: absolute;
  bottom: 76px;
  right: 0;
  width: 380px;
  max-width: calc(100vw - 48px);
  height: 520px;
  max-height: calc(100vh - 120px);
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  overflow: hidden;
}

.chat-widget.open .chat-window {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.chat-header {
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.chat-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}

.chat-header-info h4 {
  margin: 0;
  font-size: 1rem;
  font-weight: var(--font-weight-semibold);
}

.chat-header-info p {
  margin: 0;
  font-size: 0.8rem;
  opacity: 0.9;
  display: flex;
  align-items: center;
  gap: 4px;
}

.chat-header-info p i {
  color: #4ade80;
}

.chat-messages {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
  background: var(--color-bg-secondary);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.chat-message {
  max-width: 80%;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.chat-message.user {
  align-self: flex-end;
}

.chat-message.admin {
  align-self: flex-start;
}

.chat-bubble {
  padding: var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
  line-height: 1.5;
  word-wrap: break-word;
}

.chat-message.user .chat-bubble {
  background: var(--color-primary);
  color: white;
  border-bottom-right-radius: 4px;
}

.chat-message.admin .chat-bubble {
  background: white;
  color: var(--color-text-primary);
  border-bottom-left-radius: 4px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.chat-message--error {
  opacity: 0.8;
}

.chat-bubble--error {
  background: #fee2e2 !important;
  color: #dc2626 !important;
}

.chat-time {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  padding: 0 var(--spacing-xs);
}

.chat-message.user .chat-time {
  text-align: right;
}

.chat-input-wrapper {
  padding: var(--spacing-md);
  background: white;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-sm);
}

.chat-input {
  flex: 1;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
  resize: none;
  max-height: 100px;
}

.chat-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(42, 67, 101, 0.14);
}

.chat-send-btn {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  background: var(--color-primary);
  color: white;
  border: none;
  cursor: pointer;
  display: grid;
  place-items: center;
  font-size: 1rem;
  transition: all var(--transition-base);
  flex-shrink: 0;
  position: relative;
  z-index: 10;
  pointer-events: auto;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.chat-send-btn:hover:not(:disabled) {
  background: var(--color-primary-dark);
  transform: scale(1.05);
}

.chat-send-btn:active:not(:disabled) {
  transform: scale(0.95);
}

.chat-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  /* 保留 pointer-events: auto，让禁用的按钮也能响应点击并提示用户 */
  pointer-events: auto;
}

.chat-welcome {
  text-align: center;
  padding: var(--spacing-xl) var(--spacing-md);
  color: var(--color-text-secondary);
}

.chat-welcome i {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  display: block;
}

.chat-help-meta {
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.chat-help-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  margin-top: var(--spacing-sm);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

@media (max-width: 768px) {
  .chat-widget {
    bottom: 16px;
    right: 16px;
  }
  
  .chat-toggle {
    width: 54px;
    height: 54px;
  }
  
  .chat-window {
    width: calc(100vw - 32px);
    right: 0;
    bottom: 70px;
    height: 60vh;
  }
}

/* ============================================
   ADMIN CHAT
   ============================================ */

.admin-chat-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: calc(100vh - 140px);
  gap: var(--spacing-md);
}

.admin-chat-sessions {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.admin-chat-sessions-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.admin-chat-sessions-header h3 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.chat-unread-badge {
  background: var(--color-error);
  color: white;
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-bold);
}

.chat-session-list {
  flex: 1;
  overflow-y: auto;
}

.chat-session-item {
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: background var(--transition-fast);
  display: flex;
  gap: var(--spacing-md);
}

.chat-session-item:hover {
  background: var(--color-bg-secondary);
}

.chat-session-item.active {
  background: var(--color-bg-tertiary);
  border-left: 3px solid var(--color-primary);
}

.chat-session-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(42, 67, 101, 0.12);
  color: var(--color-primary);
  display: grid;
  place-items: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.chat-session-info {
  flex: 1;
  min-width: 0;
}

.chat-session-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chat-session-name span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-session-preview {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-session-meta {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.chat-session-item.unread .chat-session-name {
  color: var(--color-primary);
}

.admin-chat-window {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.admin-chat-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.admin-chat-header-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.admin-chat-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.admin-chat-messages {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
  background: var(--color-bg-secondary);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.admin-chat-empty {
  flex: 1;
  display: grid;
  place-items: center;
  color: var(--color-text-muted);
  text-align: center;
}

.admin-chat-empty i {
  font-size: 3rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.admin-chat-input-wrapper {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-md);
}

.admin-chat-input {
  flex: 1;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  resize: none;
  max-height: 120px;
}

.admin-chat-send-btn {
  padding: 0 var(--spacing-xl);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-base);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.admin-chat-send-btn:hover:not(:disabled) {
  background: var(--color-primary-dark);
}

.admin-chat-send-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

@media (max-width: 1024px) {
  .admin-chat-layout {
    grid-template-columns: 1fr;
  }
  
  .admin-chat-sessions {
    max-height: 300px;
  }
}

/* === 触控优化 === */
@media (hover: none) and (pointer: coarse) {
  .btn {
    min-height: 48px;
    padding: 0.875rem 1.5rem;
  }

  .btn-icon,
  .lang-btn,
  .product-action-btn,
  .menu-toggle,
  .chat-toggle,
  .auth-modal-close {
    min-width: 48px;
    min-height: 48px;
  }
  
  .nav-link {
    padding: 1rem 0;
  }
  
  .btn:hover {
    transform: none;
  }
  
  .btn:active {
    opacity: 0.8;
    transform: scale(0.98);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .btn:hover,
  .btn-icon:hover,
  .product-card:hover,
  .chat-toggle:hover,
  .chat-send-btn:hover:not(:disabled),
  .product-card:hover .product-image-container img {
    transform: none !important;
  }
}

/* ============================================
   优化升级 - 触控、焦点、Skeleton、结账进度
   ============================================ */

/* === 移动端触控优化（确保≥44px点击区域） === */
@media (max-width: 768px), (hover: none) and (pointer: coarse) {
  .btn,
  button,
  input[type="submit"],
  input[type="button"] {
    min-height: 48px;
    padding: 0.875rem 1.25rem;
    font-size: 1rem;
  }

  .btn-icon,
  .menu-toggle,
  .lang-btn,
  .product-action-btn,
  .cart-toggle,
  .search-toggle,
  .close-btn,
  .auth-modal-close,
  .toast-close,
  .faq-question,
  .thumbnail-selector button,
  .quantity-btn {
    min-width: 48px;
    min-height: 48px;
    width: 48px;
    height: 48px;
    padding: 0;
    display: grid;
    place-items: center;
  }

  .form-input,
  .form-select,
  textarea,
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="tel"],
  input[type="number"] {
    min-height: 48px;
    padding: 0.875rem 1rem;
    font-size: 1rem;
  }

  .nav-link {
    padding: 0.875rem 0;
  }

  .footer-social a {
    width: 48px;
    height: 48px;
  }

  .tab,
  .auth-tab {
    padding: 1rem 1.25rem;
    min-height: 48px;
  }

  .checkout-method,
  .payment-method {
    padding: 1.25rem;
    min-height: 64px;
  }

  .cart-item-action {
    min-width: 40px;
    min-height: 40px;
  }

  .quantity-btn {
    width: 44px;
    height: 44px;
  }

  .input-number {
    min-height: 44px;
  }
}

/* === 焦点可见性增强（键盘无障碍） === */
:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 2px;
}

a:focus-visible,
button:focus-visible,
.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid #2563eb;
  outline-offset: 2px;
}

.form-input:focus-visible {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

.btn:focus-visible {
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.4);
}

/* 移除默认轮廓但保持:focus-visible */
:focus {
  outline: none;
}

/* === Skeleton Loading 骨架屏 === */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
}

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

.skeleton-text {
  height: 1rem;
  border-radius: 4px;
  margin-bottom: 0.5rem;
}

.skeleton-text.short {
  width: 60%;
}

.skeleton-text.medium {
  width: 80%;
}

.skeleton-text.long {
  width: 100%;
}

.skeleton-image {
  aspect-ratio: 1;
  border-radius: 8px;
}

.skeleton-avatar {
  width: 48px;
  height: 48px;
  border-radius: 9999px;
}

.skeleton-button {
  height: 48px;
  border-radius: 8px;
  width: 120px;
}

.skeleton-card {
  border-radius: 12px;
  padding: 1.5rem;
  background: white;
}

.skeleton-loading-container {
  display: grid;
  gap: 1rem;
}

/* === 结账流程进度指示器 === */
.checkout-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
}

.checkout-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  max-width: 120px;
}

.checkout-step-icon {
  width: 48px;
  height: 48px;
  border-radius: 9999px;
  display: grid;
  place-items: center;
  background: var(--color-bg-tertiary);
  color: var(--color-text-tertiary);
  font-weight: 700;
  border: 2px solid var(--color-border);
  transition: all 0.3s ease;
}

.checkout-step.active .checkout-step-icon {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(42, 67, 101, 0.15);
}

.checkout-step.completed .checkout-step-icon {
  background: var(--color-success);
  color: white;
  border-color: var(--color-success);
}

.checkout-step-label {
  font-size: 0.8rem;
  text-align: center;
  color: var(--color-text-tertiary);
  font-weight: 500;
}

.checkout-step.active .checkout-step-label {
  color: var(--color-primary);
  font-weight: 600;
}

.checkout-step.completed .checkout-step-label {
  color: var(--color-success);
}

.checkout-step-divider {
  flex: 1;
  height: 2px;
  background: var(--color-border);
  max-width: 80px;
  transition: background 0.3s ease;
}

.checkout-step-divider.completed {
  background: var(--color-success);
}

@media (max-width: 640px) {
  .checkout-steps {
    gap: 0.5rem;
  }

  .checkout-step {
    max-width: 100px;
  }

  .checkout-step-icon {
    width: 40px;
    height: 40px;
    font-size: 0.875rem;
  }

  .checkout-step-label {
    font-size: 0.75rem;
  }

  .checkout-step-divider {
    max-width: 40px;
  }
}

/* === 信任信号模块 === */
.trust-signals {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  padding: 1.5rem;
  background: white;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.trust-signal {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.trust-signal-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-primary-soft);
  display: grid;
  place-items: center;
  color: var(--color-primary);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.trust-signal-content h4 {
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.trust-signal-content p {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .trust-signals {
    grid-template-columns: 1fr;
  }
}

/* === 快速预览按钮 === */
.product-quick-view-btn {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  opacity: 0;
  background: white;
  color: var(--color-primary);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-soft-lg);
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 10;
}

.product-card:hover .product-quick-view-btn {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

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