:root {
  --primary-color: #6366F1;
  --primary-dark: #4F46E5;
  --primary-light: #A5B4FC;
  --secondary-color: #F59E0B;
  --accent-color: #10B981;
  --text-dark: #111827;
  --text-medium: #374151;
  --text-light: #6B7280;
  --text-muted: #9CA3AF;
  --background-primary: #FFFFFF;
  --background-secondary: #F9FAFB;
  --background-accent: #F3F4F6;
  --border-color: #E5E7EB;
  --border-light: #F3F4F6;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 80px;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--background-primary);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.header {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo-icon {
  display: block;
  filter: drop-shadow(0 2px 4px rgba(99, 102, 241, 0.2));
}

.brand-name {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-dark);
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero {
  background: linear-gradient(135deg, #F8FAFC 0%, #EEF2FF 50%, #FEF3C7 100%);
  padding: var(--spacing-4xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-centered,
.section-centered {
  text-align: center;
}

.hero .container .hero-centered {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  text-align: left;
}

.hero-main-image,
.intro-image,
.product-image-main {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.intro-image {
  height: 200px;
  margin-bottom: var(--spacing-lg);
}

.product-image-main {
  height: 280px;
  border-radius: var(--radius-lg);
}

.product-price {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: var(--spacing-lg);
}

.btn-product-secondary {
  background: linear-gradient(135deg, var(--secondary-color) 0%, #D97706 100%);
  color: white;
  width: 100%;
  text-align: center;
  font-weight: 600;
}

.btn-product-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.hero-content h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  color: var(--text-dark);
  margin-bottom: var(--spacing-xl);
  line-height: 1.1;
  letter-spacing: -0.025em;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-medium);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.6;
  font-weight: 400;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 32px;
  border-radius: var(--radius-lg);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: var(--background-primary);
  color: var(--text-dark);
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--background-secondary);
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.image-placeholder {
  width: 100%;
  height: 400px;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-color) 100%);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.image-placeholder::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
}

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

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-3xl) auto;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--text-medium);
  line-height: 1.6;
}

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

.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.intro-card {
  text-align: center;
  padding: var(--spacing-xl);
  background-color: var(--background-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  transition: all 0.3s ease;
}

.intro-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.intro-card .image-placeholder {
  height: 200px;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-lg);
}

.intro-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-sm);
}

.intro-card p {
  color: var(--text-medium);
  line-height: 1.6;
}

.features {
  background: linear-gradient(135deg, var(--background-secondary) 0%, var(--background-accent) 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: var(--spacing-2xl);
  max-width: 1000px;
  margin: 0 auto;
}

.feature-item {
  background-color: var(--background-primary);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  text-align: center;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.feature-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  margin-bottom: var(--spacing-lg);
}

.feature-item h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.feature-item p {
  color: var(--text-medium);
  line-height: 1.6;
  font-size: 1.0625rem;
}

.how-it-works {
  background-color: var(--background-primary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-2xl);
  max-width: 1100px;
  margin: 0 auto;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  font-size: 2rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg) auto;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.step-number::before {
  content: '';
  position: absolute;
  top: -4px;
  left: -4px;
  right: -4px;
  bottom: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-color) 100%);
  z-index: -1;
  opacity: 0.3;
}

.step h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.step p {
  color: var(--text-medium);
  line-height: 1.6;
  font-size: 1.0625rem;
}

.products {
  background: linear-gradient(135deg, var(--background-secondary) 0%, var(--background-accent) 100%);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: var(--spacing-2xl);
}

.product-card {
  background-color: var(--background-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.product-image .image-placeholder {
  height: 280px;
  border-radius: var(--radius-lg);
}

.product-content {
  padding: var(--spacing-2xl);
}

.product-content h3 {
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.product-content p {
  color: var(--text-medium);
  line-height: 1.6;
  margin-bottom: var(--spacing-xl);
  font-size: 1.0625rem;
}

.btn-product {
  background: linear-gradient(135deg, var(--accent-color) 0%, #059669 100%);
  color: white;
  width: 100%;
  text-align: center;
  font-weight: 600;
}

.btn-product:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.why-choose {
  background-color: var(--background-primary);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.why-item {
  text-align: center;
  padding: var(--spacing-xl);
  background-color: var(--background-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  transition: all 0.3s ease;
}

.why-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}

.why-icon {
  margin-bottom: var(--spacing-lg);
}

.why-item h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.why-item p {
  color: var(--text-medium);
  line-height: 1.6;
}

.testimonials {
  background: linear-gradient(135deg, var(--background-secondary) 0%, var(--background-accent) 100%);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-2xl);
}

.testimonial-card {
  background-color: var(--background-primary);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.testimonial-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.testimonial-content {
  margin-bottom: var(--spacing-lg);
}

.testimonial-content p {
  color: var(--text-dark);
  font-style: italic;
  line-height: 1.6;
  font-size: 1.0625rem;
  position: relative;
}

.testimonial-content p::before {
  content: '"';
  font-size: 3rem;
  color: var(--primary-light);
  position: absolute;
  top: -10px;
  left: -20px;
  font-family: serif;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-placeholder {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--secondary-color) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  color: white;
  flex-shrink: 0;
  font-weight: 600;
}

.author-info h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-dark);
}

.author-info p {
  font-size: 0.9375rem;
  color: var(--text-light);
}

.cta {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 80%, rgba(245, 158, 11, 0.2) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(16, 185, 129, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
}

.cta-content h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  color: white;
  letter-spacing: -0.025em;
}

.cta-content p {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-2xl);
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
}

.btn-cta {
  background-color: white;
  color: var(--primary-color);
  font-weight: 700;
  box-shadow: var(--shadow-lg);
}

.btn-cta:hover {
  background-color: var(--background-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

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

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-2xl);
}

.contact-item {
  text-align: center;
  padding: var(--spacing-2xl);
  background: linear-gradient(135deg, var(--background-secondary) 0%, var(--background-accent) 100%);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  transition: all 0.3s ease;
}

.contact-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.contact-icon {
  margin-bottom: var(--spacing-lg);
}

.contact-item h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: var(--spacing-md);
}

.contact-item p {
  color: var(--text-medium);
  line-height: 1.6;
}

.contact-item a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 600;
}

.contact-item a:hover {
  text-decoration: underline;
}

.footer {
  background: linear-gradient(135deg, var(--text-dark) 0%, #1F2937 100%);
  color: white;
  padding: var(--spacing-4xl) 0 var(--spacing-xl) 0;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-2xl);
}

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

.footer-brand .brand-name {
  color: white;
  background: linear-gradient(135deg, #A5B4FC 0%, #FDE68A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-description {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  font-size: 1.0625rem;
}

.footer-section h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: white;
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-md);
}

.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.footer-section p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 1024px) {
  .hero .container .hero-centered {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }

  .hero-image {
    order: -1;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }

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

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

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .intro-grid,
  .steps-grid,
  .why-grid,
  .testimonials-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .intro-card,
  .feature-item,
  .why-item,
  .testimonial-card,
  .contact-item {
    padding: var(--spacing-lg);
  }

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