/* ============================================
   楚晴科技 - Brutalism / 野兽派设计
   黑#111 + 白#FFF + 亮黄#FFE500
   ============================================ */

:root {
  --black: #111111;
  --white: #FFFFFF;
  --yellow: #FFE500;
  --gray-light: #f5f5f5;
  --gray-mid: #999999;
  --gray-dark: #333333;
  --border-thick: 3px solid #111111;
  --border-thin: 2px solid #111111;
  --shadow-brutal: 6px 6px 0 #111111;
  --shadow-brutal-sm: 4px 4px 0 #111111;
  --shadow-brutal-yellow: 6px 6px 0 #FFE500;
  --font-mono: 'Courier New', 'Consolas', 'SF Mono', monospace;
  --font-sans: 'Arial Black', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Helvetica Neue', 'PingFang SC', 'Noto Sans CJK SC', 'Microsoft YaHei', sans-serif;
  --container-width: 1200px;
  --transition-base: 0.2s ease;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: var(--black);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

img, svg {
  max-width: 100%;
  height: auto;
}

/* ============================================
   Navigation - Brutalism
   ============================================ */

.nav-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 12px 24px;
  transition: padding var(--transition-base);
}

.nav-wrapper.scrolled {
  padding: 8px 24px;
}

.navbar {
  max-width: var(--container-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  background: var(--white);
  border: var(--border-thick);
  box-shadow: var(--shadow-brutal-sm);
  transition: all var(--transition-base);
}

.nav-wrapper.scrolled .navbar {
  box-shadow: var(--shadow-brutal);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  font-size: 18px;
  color: var(--black);
  text-transform: uppercase;
}

.logo-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--black);
  color: var(--yellow);
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: -1px;
  border: 2px solid var(--black);
}

.logo-text {
  font-family: var(--font-sans);
  font-weight: 900;
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: block;
  padding: 8px 18px;
  color: var(--black);
  font-size: 14px;
  font-weight: 900;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all var(--transition-base);
  border: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--yellow);
  color: var(--black);
  border-color: var(--black);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  border: none;
  background: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--black);
  transition: all var(--transition-base);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ============================================
   Hero - Brutalism
   ============================================ */

.hero {
  padding: 160px 0 100px;
  background: var(--black);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 20px,
    rgba(255,229,0,0.03) 20px,
    rgba(255,229,0,0.03) 40px
  );
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 6px;
  background: var(--yellow);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 20px;
  letter-spacing: -1px;
  line-height: 1.1;
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.hero h1 span {
  color: var(--yellow);
  display: inline;
}

.hero p {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 40px;
  line-height: 1.7;
  max-width: 600px;
  font-family: var(--font-mono);
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================
   Buttons - Brutalism
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 900;
  font-family: var(--font-sans);
  cursor: pointer;
  border: var(--border-thick);
  transition: all var(--transition-base);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-primary {
  background: var(--yellow);
  color: var(--black);
  box-shadow: var(--shadow-brutal);
}

.btn-primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--black);
  color: var(--black);
}

.btn-secondary {
  background: var(--white);
  color: var(--black);
  box-shadow: var(--shadow-brutal-sm);
}

.btn-secondary:hover {
  background: var(--gray-light);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--black);
}

.btn-white {
  background: var(--white);
  color: var(--black);
  box-shadow: var(--shadow-brutal);
}

.btn-white:hover {
  background: var(--yellow);
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(255,255,255,0.3);
  color: var(--black);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--yellow);
}

.btn-outline:hover {
  background: var(--yellow);
  color: var(--black);
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 rgba(255,229,0,0.3);
}

.btn-dark {
  background: var(--black);
  color: var(--yellow);
  box-shadow: var(--shadow-brutal-yellow);
}

.btn-dark:hover {
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 var(--yellow);
  color: var(--yellow);
}

.btn-sm {
  padding: 10px 22px;
  font-size: 13px;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

/* ============================================
   Section Layout
   ============================================ */

.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: 42px;
  font-weight: 900;
  color: var(--black);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.section-header p {
  font-size: 16px;
  color: var(--gray-dark);
  max-width: 560px;
  margin: 0 auto;
  font-family: var(--font-mono);
}

/* ============================================
   Glass Card => Brutal Card
   ============================================ */

.glass-card {
  background: var(--white);
  border: var(--border-thick);
  box-shadow: var(--shadow-brutal);
  transition: all var(--transition-base);
}

/* ============================================
   Product Grid - Brutalism
   ============================================ */

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

a.product-card {
  text-decoration: none;
  color: inherit;
  display: block;
}

a.product-card:hover {
  color: inherit;
}

.product-card {
  background: var(--white);
  border: var(--border-thick);
  box-shadow: var(--shadow-brutal-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: 10px 10px 0 var(--black);
}

.card-image {
  height: 180px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: var(--border-thick);
}

.card-image-icon {
  opacity: 0.9;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-image-icon svg {
  width: 60px;
  height: 60px;
}

.card-sales {
  position: absolute;
  top: 10px;
  right: 10px;
  background: var(--yellow);
  color: var(--black);
  font-size: 11px;
  font-weight: 900;
  padding: 4px 10px;
  border: 2px solid var(--black);
  font-family: var(--font-mono);
}

.card-body {
  padding: 16px 20px 20px;
}

.product-card h3 {
  font-size: 17px;
  font-weight: 900;
  color: var(--black);
  margin-bottom: 6px;
  font-family: var(--font-sans);
}

.card-desc {
  font-size: 13px;
  color: var(--gray-dark);
  line-height: 1.5;
  min-height: 40px;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  font-family: var(--font-mono);
}

.card-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
}

.card-rating .stars {
  color: var(--yellow);
  font-size: 14px;
  letter-spacing: 1px;
  text-shadow: 0 0 0 var(--black);
}

.card-rating .rating-count {
  font-size: 12px;
  color: var(--gray-mid);
  font-family: var(--font-mono);
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-price {
  font-size: 24px;
  font-weight: 900;
  color: var(--black);
  font-family: var(--font-mono);
}

.card-price small {
  font-size: 13px;
  font-weight: 700;
}

.card-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  background: var(--black);
  color: var(--yellow);
  font-size: 12px;
  font-weight: 900;
  border: 2px solid var(--black);
  transition: all var(--transition-base);
  white-space: nowrap;
  text-transform: uppercase;
  font-family: var(--font-sans);
  letter-spacing: 0.5px;
}

.product-card:hover .card-btn {
  background: var(--yellow);
  color: var(--black);
}

/* ============================================
   Feature Cards - Brutalism
   ============================================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--white);
  border: var(--border-thick);
  box-shadow: var(--shadow-brutal-sm);
  padding: 36px 28px;
  transition: all var(--transition-base);
  position: relative;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: var(--yellow);
}

.feature-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: 8px 8px 0 var(--black);
}

.feature-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--black);
  margin-bottom: 20px;
  border: 2px solid var(--black);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--yellow);
  fill: none;
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 8px;
  color: var(--black);
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.feature-card p {
  font-size: 14px;
  color: var(--gray-dark);
  line-height: 1.6;
  font-family: var(--font-mono);
}

/* ============================================
   Product Detail Page
   ============================================ */

.product-detail {
  padding: 120px 0 80px;
}

.product-detail-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding: 40px;
}

.product-image-area {
  background: var(--black);
  border: var(--border-thick);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
  padding: 40px;
}

.product-image-area svg {
  width: 160px;
  height: 160px;
}

.product-info h1 {
  font-size: 36px;
  font-weight: 900;
  margin-bottom: 12px;
  color: var(--black);
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.product-info .product-detail-desc {
  font-size: 15px;
  color: var(--gray-dark);
  line-height: 1.8;
  margin-bottom: 24px;
  font-family: var(--font-mono);
}

.product-info .detail-price {
  font-size: 40px;
  font-weight: 900;
  color: var(--black);
  margin-bottom: 28px;
  font-family: var(--font-mono);
  display: inline-block;
  background: var(--yellow);
  padding: 4px 16px;
  border: var(--border-thick);
}

.product-info .detail-price small {
  font-size: 18px;
  font-weight: 700;
}

.product-features-list {
  list-style: none;
  margin-bottom: 32px;
}

.product-features-list li {
  padding: 8px 0;
  font-size: 15px;
  color: var(--gray-dark);
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
}

.product-features-list li svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Quantity Selector */

.quantity-selector {
  display: inline-flex;
  align-items: center;
  gap: 0;
  margin-bottom: 24px;
  border: var(--border-thick);
}

.quantity-selector button {
  width: 44px;
  height: 44px;
  border: none;
  background: var(--white);
  font-size: 20px;
  color: var(--black);
  cursor: pointer;
  font-family: var(--font-mono);
  font-weight: 900;
  transition: background var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: center;
}

.quantity-selector button:hover {
  background: var(--yellow);
}

.quantity-selector input {
  width: 56px;
  height: 44px;
  border: none;
  background: var(--white);
  text-align: center;
  font-size: 16px;
  font-weight: 900;
  font-family: var(--font-mono);
  color: var(--black);
  border-left: var(--border-thin);
  border-right: var(--border-thin);
}

.quantity-selector input:focus {
  outline: none;
  background: var(--yellow);
}

.quantity-label {
  font-size: 14px;
  color: var(--gray-dark);
  margin-bottom: 8px;
  font-weight: 900;
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.product-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ============================================
   Order Page
   ============================================ */

.order-page {
  padding: 120px 0 80px;
}

.order-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 32px;
  align-items: start;
}

.order-form-card {
  padding: 36px;
}

.order-summary-card {
  padding: 32px;
  position: sticky;
  top: 110px;
}

.form-section {
  margin-bottom: 32px;
}

.form-section:last-child {
  margin-bottom: 0;
}

.form-section h3 {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 20px;
  color: var(--black);
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  text-transform: uppercase;
  border-bottom: var(--border-thin);
  padding-bottom: 12px;
}

.form-section h3 svg {
  width: 20px;
  height: 20px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 900;
  color: var(--black);
  margin-bottom: 6px;
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  border: var(--border-thin);
  font-size: 15px;
  font-family: var(--font-mono);
  color: var(--black);
  background: var(--white);
  transition: all var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--yellow);
  box-shadow: 3px 3px 0 var(--yellow);
  background: var(--white);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--gray-mid);
}

.form-group textarea {
  resize: vertical;
  min-height: 80px;
}

/* Payment Method Selection */

.payment-methods {
  display: flex;
  gap: 12px;
}

.payment-method {
  flex: 1;
  position: relative;
}

.payment-method input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.payment-method label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 20px 16px;
  border: var(--border-thin);
  background: var(--white);
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: 14px !important;
  font-weight: 900 !important;
  color: var(--black) !important;
  margin-bottom: 0 !important;
  font-family: var(--font-sans) !important;
}

.payment-method label svg {
  width: 36px;
  height: 36px;
}

.payment-method input[type="radio"]:checked + label {
  border-color: var(--black);
  background: var(--yellow);
  box-shadow: var(--shadow-brutal-sm);
}

.payment-method.alipay input[type="radio"]:checked + label {
  border-color: var(--black);
  background: #e8f0ff;
}

.payment-method.wechat input[type="radio"]:checked + label {
  border-color: var(--black);
  background: #e8f8ee;
}

/* Order Summary */

.order-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: var(--border-thin);
}

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

.order-item-name {
  font-size: 15px;
  font-weight: 900;
  color: var(--black);
  font-family: var(--font-sans);
}

.order-item-detail {
  font-size: 13px;
  color: var(--gray-dark);
  margin-top: 2px;
  font-family: var(--font-mono);
}

.order-item-price {
  font-size: 16px;
  font-weight: 900;
  color: var(--black);
  white-space: nowrap;
  font-family: var(--font-mono);
}

.order-divider {
  height: 3px;
  background: var(--black);
  margin: 16px 0;
}

.order-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 4px;
}

.order-total-label {
  font-size: 16px;
  font-weight: 900;
  color: var(--black);
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.order-total-price {
  font-size: 32px;
  font-weight: 900;
  color: var(--black);
  font-family: var(--font-mono);
  background: var(--yellow);
  padding: 2px 12px;
  border: var(--border-thin);
}

/* ============================================
   Payment Page
   ============================================ */

.pay-page {
  padding: 120px 0 80px;
  min-height: 100vh;
}

.pay-card {
  max-width: 520px;
  margin: 0 auto;
  padding: 48px 40px;
  text-align: center;
}

.pay-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: var(--border-thick);
}

.pay-icon.alipay {
  background: #e8f0ff;
}

.pay-icon.wechat {
  background: #e8f8ee;
}

.pay-icon svg {
  width: 40px;
  height: 40px;
}

.pay-card h2 {
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 8px;
  color: var(--black);
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.pay-card .pay-amount {
  font-size: 44px;
  font-weight: 900;
  color: var(--black);
  margin: 20px 0;
  font-family: var(--font-mono);
  display: inline-block;
  background: var(--yellow);
  padding: 4px 20px;
  border: var(--border-thick);
}

.pay-card .pay-status {
  font-size: 15px;
  color: var(--gray-dark);
  margin-bottom: 12px;
  font-family: var(--font-mono);
}

.pay-info-table {
  width: 100%;
  margin: 24px 0;
  text-align: left;
}

.pay-info-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid #eee;
  font-size: 14px;
  font-family: var(--font-mono);
}

.pay-info-row .label {
  color: var(--gray-dark);
  font-weight: 700;
}

.pay-info-row .value {
  color: var(--black);
  font-weight: 900;
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 4px solid #eee;
  border-top-color: var(--black);
  border-radius: 0;
  animation: spin 0.6s linear infinite;
  margin: 16px auto;
}

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

.pay-success {
  color: #2d7d32;
}

.pay-fail {
  color: #c62828;
}

/* ============================================
   Reviews Section
   ============================================ */

.reviews-section {
  padding: 0 0 60px;
}

.reviews-header {
  margin-bottom: 32px;
}

.reviews-header h2 {
  font-size: 28px;
  font-weight: 900;
  color: var(--black);
  margin-bottom: 16px;
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.reviews-summary {
  display: flex;
  align-items: center;
}

.reviews-score {
  display: flex;
  align-items: center;
  gap: 12px;
}

.score-number {
  font-size: 48px;
  font-weight: 900;
  color: var(--black);
  line-height: 1;
  font-family: var(--font-mono);
}

.score-detail {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.score-stars {
  color: var(--yellow);
  font-size: 18px;
  letter-spacing: 2px;
}

.score-count {
  font-size: 13px;
  color: var(--gray-dark);
  font-family: var(--font-mono);
}

.reviews-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.review-card {
  padding: 24px;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.review-avatar {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--black);
  font-size: 16px;
  font-weight: 900;
  flex-shrink: 0;
  border: 2px solid var(--black);
  font-family: var(--font-sans);
}

.review-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.review-user {
  font-size: 15px;
  font-weight: 900;
  color: var(--black);
  font-family: var(--font-sans);
}

.review-time {
  font-size: 12px;
  color: var(--gray-mid);
  font-family: var(--font-mono);
}

.review-stars {
  color: var(--yellow);
  font-size: 14px;
  letter-spacing: 1px;
  flex-shrink: 0;
}

.review-text {
  font-size: 14px;
  color: var(--gray-dark);
  line-height: 1.7;
  font-family: var(--font-mono);
}

/* ============================================
   Related Products
   ============================================ */

.related-section {
  padding: 60px 0 80px;
}

.related-section h2 {
  font-size: 28px;
  font-weight: 900;
  margin-bottom: 32px;
  color: var(--black);
  font-family: var(--font-sans);
  text-transform: uppercase;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

/* ============================================
   Footer - Brutalism
   ============================================ */

.footer {
  background: var(--black);
  border-top: 6px solid var(--yellow);
  padding: 48px 0 32px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  margin-bottom: 32px;
}

.footer-brand {
  max-width: 360px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 18px;
  font-weight: 900;
  color: var(--white);
  font-family: var(--font-sans);
}

.footer-brand .footer-logo .logo-box {
  width: 36px;
  height: 36px;
  font-size: 14px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
  font-family: var(--font-mono);
}

.footer-links {
  display: flex;
  gap: 56px;
}

.footer-links-col h4 {
  font-size: 13px;
  font-weight: 900;
  color: var(--yellow);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-family: var(--font-sans);
}

.footer-links-col ul {
  list-style: none;
}

.footer-links-col li {
  margin-bottom: 8px;
}

.footer-links-col a {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition-base);
  font-family: var(--font-mono);
}

.footer-links-col a:hover {
  color: var(--yellow);
}

.footer-bottom {
  border-top: 2px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.3);
  font-family: var(--font-mono);
}

.footer-bottom a {
  color: rgba(255,255,255,0.3);
}

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

/* ============================================
   Page Transition
   ============================================ */

.page-enter {
  animation: fadeInUp 0.4s ease forwards;
}

.fade-in {
  animation: fadeInUp 0.4s ease both;
}

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

.stagger-0 { animation-delay: 0s; }
.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.1s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.2s; }
.stagger-5 { animation-delay: 0.25s; }
.stagger-6 { animation-delay: 0.3s; }
.stagger-7 { animation-delay: 0.35s; }

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1200px) {
    .container { max-width: 960px; }
    .product-grid { grid-template-columns: repeat(3, 1fr); }
    .hero h1 { font-size: 2.2rem; }
}

@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .product-detail-card {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .order-layout {
    grid-template-columns: 1fr;
  }
  .order-summary-card {
    position: static;
  }
}

@media (max-width: 768px) {
  .nav-wrapper {
    padding: 8px 16px;
  }
  .navbar {
    padding: 10px 20px;
  }
  .nav-links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    background: var(--white);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: -1;
  }
  .nav-links.active {
    opacity: 1;
    visibility: visible;
    z-index: 999;
  }
  .nav-links a {
    font-size: 20px;
    padding: 14px 32px;
  }
  .nav-toggle {
    display: flex;
    z-index: 1001;
  }
  .hero {
    padding: 130px 0 80px;
  }
  .hero h1 {
    font-size: 32px;
  }
  .hero p {
    font-size: 16px;
  }
  .section {
    padding: 56px 0;
  }
  .section-header h2 {
    font-size: 28px;
  }
  .product-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .card-image {
    height: 160px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .related-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .related-grid .card-image {
    height: 120px;
  }
  .related-grid .card-image-icon svg {
    width: 40px;
    height: 40px;
  }
  .product-detail-card {
    padding: 24px;
  }
  .product-info h1 {
    font-size: 24px;
  }
  .review-card {
    padding: 16px;
  }
  .score-number {
    font-size: 32px;
  }
  .order-form-card,
  .order-summary-card {
    padding: 24px;
  }
  .pay-card {
    padding: 32px 24px;
  }
  .footer-content {
    flex-direction: column;
    gap: 32px;
  }
  .footer-links {
    gap: 32px;
    flex-wrap: wrap;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .payment-methods {
    flex-direction: column;
  }
  .container {
    padding: 0 16px;
  }
  .hero-buttons {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .related-grid {
    grid-template-columns: 1fr;
  }
  .related-grid .card-image {
    height: 160px;
  }
  .product-image-area {
    min-height: 240px;
  }
  .review-header {
    flex-wrap: wrap;
  }
  .review-stars {
    margin-left: 52px;
  }
}