/* ============================================
   威智文化官网 - 科技风深蓝主题
   Primary: 蓝色渐变 #4DA6FF → #0055D4
   Accent:  橙黄渐变 #FFAA00 → #FF4500
   Background: 深蓝 hsl(222, 47%, 8%)
   ============================================ */

:root {
  --bg-deep: hsl(222, 47%, 8%);
  --bg-card: hsl(222, 47%, 12%);
  --bg-header: hsla(222, 47%, 6%, 0.95);
  --primary: #4DA6FF;
  --primary-dark: #0055D4;
  --primary-glow: rgba(77, 166, 255, 0.3);
  --accent: #FFAA00;
  --accent-dark: #FF4500;
  --accent-glow: rgba(255, 170, 0, 0.3);
  --text-primary: hsl(210, 40%, 95%);
  --text-secondary: hsl(217, 19%, 70%);
  --border-color: rgba(77, 166, 255, 0.15);
  --grid-color: rgba(77, 166, 255, 0.04);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ============================================
   Header / 导航栏
   ============================================ */

.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.logo img {
  height: 40px;
  width: auto;
  border-radius: 6px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
  background: rgba(77, 166, 255, 0.08);
}

.nav a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  box-shadow: 0 0 8px var(--primary-glow);
}

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

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: var(--transition);
}

/* ============================================
   Hero / Banner
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  opacity: 0.3;
  animation: pulseGlow 6s ease-in-out infinite;
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.2; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.4; transform: translate(-50%, -50%) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 40%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px var(--primary-glow);
}

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

.btn-outline:hover {
  background: rgba(77, 166, 255, 0.1);
  transform: translateY(-2px);
}

/* ============================================
   Section / 通用板块
   ============================================ */

.section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary);
  background: rgba(77, 166, 255, 0.1);
  border: 1px solid var(--border-color);
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Business Cards / 业务卡片
   ============================================ */

.business-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.business-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.business-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.business-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3), 0 0 30px var(--primary-glow);
}

.business-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
  background: rgba(77, 166, 255, 0.1);
  border: 1px solid var(--border-color);
}

.business-card:nth-child(2) .card-icon {
  background: rgba(255, 170, 0, 0.1);
}

.business-card:nth-child(3) .card-icon {
  background: rgba(77, 166, 255, 0.15);
}

.business-card:nth-child(4) .card-icon {
  background: rgba(255, 170, 0, 0.15);
}

.business-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.business-card ul {
  list-style: none;
  padding: 0;
}

.business-card li {
  padding: 6px 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
  position: relative;
  padding-left: 16px;
}

.business-card li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

/* ============================================
   About Section
   ============================================ */

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.05rem;
  line-height: 1.8;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 28px 24px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ============================================
   Product Grid / 产品网格
   ============================================ */

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3), 0 0 30px var(--primary-glow);
}

.product-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border-color);
}

.product-info {
  padding: 28px;
}

.product-info h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.product-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.product-features {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
}

.product-features li {
  padding: 6px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  position: relative;
  padding-left: 20px;
}

.product-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

.product-price {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.price {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
}

.original-price {
  font-size: 1rem;
  color: var(--text-secondary);
  text-decoration: line-through;
}

.buy-btn {
  width: 100%;
  justify-content: center;
}

/* ============================================
   Payment Modal / 支付弹窗
   ============================================ */

.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  max-width: 480px;
  width: 100%;
  position: relative;
  overflow: hidden;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
}

.modal-header {
  padding: 40px 32px 24px;
  text-align: center;
}

.alipay-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, #1677FF, #0958D9);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}

.alipay-icon svg {
  width: 32px;
  height: 32px;
  color: #fff;
}

.modal-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  padding: 0 32px 32px;
}

.order-info {
  background: var(--bg-deep);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
}

.order-info p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
}

.order-info p:last-child {
  margin-bottom: 0;
}

.order-info strong {
  color: var(--text-primary);
}

.price-highlight {
  color: var(--accent);
  font-weight: 700;
}

.qr-placeholder {
  background: var(--bg-deep);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 40px;
  text-align: center;
  margin-bottom: 20px;
}

.qr-placeholder svg {
  width: 80px;
  height: 80px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.qr-placeholder p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.qr-hint {
  font-size: 0.85rem !important;
  color: var(--text-secondary) !important;
  opacity: 0.7;
}

.payment-note {
  background: rgba(255, 170, 0, 0.1);
  border: 1px solid rgba(255, 170, 0, 0.2);
  border-radius: 12px;
  padding: 16px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   Contact Section / 联系板块
   ============================================ */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--primary);
  box-shadow: 0 0 20px var(--primary-glow);
}

.contact-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  background: rgba(77, 166, 255, 0.1);
  border: 1px solid var(--border-color);
}

.contact-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.contact-item p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 36px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-deep);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 15px var(--primary-glow);
}

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

/* ============================================
   Page Banner
   ============================================ */

.page-banner {
  padding: 160px 0 80px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.page-banner::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  opacity: 0.25;
  animation: pulseGlow 6s ease-in-out infinite;
}

.page-banner h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text-primary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.page-banner p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  position: relative;
}

/* ============================================
   Business Detail
   ============================================ */

.business-detail {
  padding: 20px 0;
}

.service-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-item {
  padding: 16px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 14px;
}

.service-item:hover {
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: 0 0 20px var(--primary-glow);
  transform: translateX(4px);
}

.service-dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 8px var(--primary-glow);
}

.cta-box {
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 50%, var(--primary-glow), transparent 50%),
              radial-gradient(circle at 70% 50%, var(--accent-glow), transparent 50%);
  opacity: 0.15;
  animation: pulseGlow 8s ease-in-out infinite;
}

.cta-box > * {
  position: relative;
}

/* ============================================
   Footer
   ============================================ */

.footer {
  background: var(--bg-header);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 32px;
  position: relative;
  z-index: 1;
}

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

.footer-brand {
  max-width: 300px;
}

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 48px;
}

.footer-col h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.footer-col a {
  display: block;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  gap: 8px;
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.icp-link {
  color: var(--text-secondary);
  transition: var(--transition);
}

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

/* ============================================
   Animations
   ============================================ */

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   Products / 热销产品样式
   ============================================ */

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.product-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.3), 0 0 30px var(--primary-glow);
}

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  z-index: 2;
}

.product-badge.hot {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
}

.product-image {
  height: 180px;
  background: linear-gradient(135deg, rgba(77, 166, 255, 0.08), rgba(255, 170, 0, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-image svg {
  width: 64px;
  height: 64px;
  color: var(--primary);
}

.product-content {
  padding: 24px;
}

.product-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.product-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.product-features {
  list-style: none;
  padding: 0;
  margin-bottom: 20px;
}

.product-features li {
  padding: 4px 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
  position: relative;
  padding-left: 18px;
}

.product-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

.product-price {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 20px;
}

.price {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
}

.original-price {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: line-through;
}

.btn-pay {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 24px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  background: linear-gradient(135deg, #1677FF, #0055D4);
  color: #fff;
  transition: var(--transition);
}

.btn-pay:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(22, 119, 255, 0.3);
}

/* ============================================
   Products / 热销产品页
   ============================================ */

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 36px 28px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.3), 0 0 40px var(--primary-glow);
}

.product-card:hover::before {
  opacity: 1;
}

.product-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  letter-spacing: 1px;
}

.product-icon {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  background: rgba(77, 166, 255, 0.1);
  border: 1px solid var(--border-color);
}

.product-icon svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
}

.product-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.product-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}

.product-features {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
}

.product-features li {
  padding: 6px 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  position: relative;
  padding-left: 20px;
}

.product-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: 700;
}

.product-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 20px;
}

.product-price .price {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.product-price .unit {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.product-btn {
  width: 100%;
  justify-content: center;
}

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

@media (max-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .products-grid {
    grid-template-columns: 1fr;
  }

  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-header);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    transform: translateY(-120%);
    transition: var(--transition);
  }

  .nav.open {
    transform: translateY(0);
  }

  .nav a {
    width: 100%;
    text-align: center;
    padding: 12px;
  }

  .about-content,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
  }

  .footer-links {
    gap: 32px;
  }

  .hero {
    min-height: auto;
    padding: 140px 24px 80px;
  }

  .section {
    padding: 60px 0;
  }
}

@media (max-width: 480px) {
  .business-grid {
    grid-template-columns: 1fr;
  }

  .about-stats {
    grid-template-columns: 1fr;
  }

  .footer-links {
    flex-direction: column;
    gap: 24px;
  }
}